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7022 7023 7024 7025 7026 7027 7028 7029 7030 7031 7032 7033 7034 7035 7036 7037 7038 7039 7040 7041 7042 7043 7044 7045 7046 7047 7048 7049 7050 7051 7052 7053 7054 | /* * Copyright (c) 2000-2025 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /*- * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Mike Karels at Berkeley Software Design, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 */ /* * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce * support for mandatory and extensible security protections. This notice * is included in support of clause 2.2 (b) of the Apple Public License, * Version 2.0. */ /* * DEPRECATED sysctl system call code * * Everything in this file is deprecated. Sysctls should be handled * by the code in kern_newsysctl.c. * The remaining "case" sections are supposed to be converted into * SYSCTL_*-style definitions, and as soon as all of them are gone, * this source file is supposed to die. * * DO NOT ADD ANY MORE "case" SECTIONS TO THIS FILE, instead define * your sysctl with SYSCTL_INT, SYSCTL_PROC etc. in your source file. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <sys/proc_internal.h> #include <sys/kauth.h> #include <sys/file_internal.h> #include <sys/vnode_internal.h> #include <sys/unistd.h> #include <sys/buf.h> #include <sys/ioctl.h> #include <sys/namei.h> #include <sys/tty.h> #include <sys/disklabel.h> #include <sys/vm.h> #include <sys/sysctl.h> #include <sys/user.h> #include <sys/aio_kern.h> #include <sys/reboot.h> #include <sys/memory_maintenance.h> #include <sys/priv.h> #include <sys/ubc.h> /* mach_to_bsd_errno */ #include <stdatomic.h> #include <uuid/uuid.h> #include <security/audit/audit.h> #include <kern/kalloc.h> #include <machine/smp.h> #include <machine/atomic.h> #include <machine/config.h> #include <mach/machine.h> #include <mach/mach_host.h> #include <mach/mach_types.h> #include <mach/processor_info.h> #include <mach/vm_param.h> #include <kern/debug.h> #include <kern/mach_param.h> #include <kern/task.h> #include <kern/thread.h> #include <kern/thread_group.h> #include <kern/processor.h> #include <kern/cpu_number.h> #include <kern/sched_prim.h> #include <kern/workload_config.h> #include <kern/iotrace.h> #include <vm/vm_kern_xnu.h> #include <vm/vm_map_xnu.h> #include <mach/host_info.h> #include <mach/exclaves.h> #include <kern/hvg_hypercall.h> #include <kdp/sk_core.h> #if DEVELOPMENT || DEBUG #include <kern/ext_paniclog.h> #endif #include <sys/mount_internal.h> #include <sys/kdebug.h> #include <sys/kern_debug.h> #include <sys/kern_sysctl.h> #include <sys/variant_internal.h> #include <IOKit/IOPlatformExpert.h> #include <pexpert/pexpert.h> #include <machine/machine_routines.h> #include <machine/exec.h> #include <nfs/nfs_conf.h> #include <vm/vm_protos.h> #include <vm/vm_page.h> #include <vm/vm_pageout_xnu.h> #include <vm/vm_compressor_algorithms_xnu.h> #include <vm/vm_compressor_xnu.h> #include <sys/imgsrc.h> #include <kern/timer_call.h> #include <sys/codesign.h> #include <IOKit/IOBSD.h> #if CONFIG_CSR #include <sys/csr.h> #endif #if defined(__i386__) || defined(__x86_64__) #include <i386/cpuid.h> #endif #if CONFIG_FREEZE #include <sys/kern_memorystatus.h> #endif #if HAS_UPSI_FAILURE_INJECTION #include <kern/upsi.h> #endif #if KPERF #include <kperf/kperf.h> #endif #if HYPERVISOR #include <kern/hv_support.h> #endif #include <corecrypto/ccsha2.h> /* * deliberately setting max requests to really high number * so that runaway settings do not cause MALLOC overflows */ #define AIO_MAX_REQUESTS (128 * CONFIG_AIO_MAX) extern int aio_max_requests; extern int aio_max_requests_per_process; extern int aio_worker_threads; extern int lowpri_IO_window_msecs; extern int lowpri_IO_delay_msecs; #if DEVELOPMENT || DEBUG extern int nx_enabled; #endif extern int speculative_reads_disabled; extern unsigned int speculative_prefetch_max; extern unsigned int speculative_prefetch_max_iosize; extern unsigned int preheat_max_bytes; extern unsigned int preheat_min_bytes; extern long numvnodes; extern long freevnodes; extern long num_recycledvnodes; extern uuid_string_t bootsessionuuid_string; extern unsigned int vm_max_delayed_work_limit; extern unsigned int vm_max_batch; extern unsigned int vm_page_free_min; extern unsigned int vm_page_free_target; extern unsigned int vm_page_free_reserved; extern unsigned int vm_page_max_speculative_age_q; static uint64_t userspacereboottime = 0; static unsigned int userspacerebootpurpose = 0; #if (DEVELOPMENT || DEBUG) extern uint32_t vm_page_creation_throttled_hard; extern uint32_t vm_page_creation_throttled_soft; #endif /* DEVELOPMENT || DEBUG */ #if DEVELOPMENT || DEBUG extern bool bootarg_hide_process_traced; #endif /* * Conditionally allow dtrace to see these functions for debugging purposes. */ #ifdef STATIC #undef STATIC #endif #if 0 #define STATIC #else #define STATIC static #endif extern boolean_t mach_timer_coalescing_enabled; extern uint64_t timer_deadline_tracking_bin_1, timer_deadline_tracking_bin_2; STATIC void fill_user32_eproc(proc_t, struct user32_eproc *__restrict); STATIC void fill_user32_externproc(proc_t, struct user32_extern_proc *__restrict); STATIC void fill_user64_eproc(proc_t, struct user64_eproc *__restrict); STATIC void fill_user64_proc(proc_t, struct user64_kinfo_proc *__restrict); STATIC void fill_user64_externproc(proc_t, struct user64_extern_proc *__restrict); STATIC void fill_user32_proc(proc_t, struct user32_kinfo_proc *__restrict); #if CONFIG_NETBOOT extern int netboot_root(void); #endif int sysctl_procargs(int *name, u_int namelen, user_addr_t where, size_t *sizep, proc_t cur_proc); STATIC int sysctl_procargsx(int *name, u_int namelen, user_addr_t where, size_t *sizep, proc_t cur_proc, int argc_yes); int sysctl_struct(user_addr_t oldp, size_t *oldlenp, user_addr_t newp, size_t newlen, void *sp, int len); STATIC int sysdoproc_filt_KERN_PROC_PID(proc_t p, void * arg); STATIC int sysdoproc_filt_KERN_PROC_PGRP(proc_t p, void * arg); STATIC int sysdoproc_filt_KERN_PROC_TTY(proc_t p, void * arg); STATIC int sysdoproc_filt_KERN_PROC_UID(proc_t p, void * arg); STATIC int sysdoproc_filt_KERN_PROC_RUID(proc_t p, void * arg); int sysdoproc_callback(proc_t p, void *arg); #if CONFIG_THREAD_GROUPS && (DEVELOPMENT || DEBUG) STATIC int sysctl_get_thread_group_id SYSCTL_HANDLER_ARGS; #endif /* forward declarations for non-static STATIC */ STATIC void fill_loadavg64(struct loadavg *la, struct user64_loadavg *la64); STATIC void fill_loadavg32(struct loadavg *la, struct user32_loadavg *la32); STATIC int sysctl_handle_kern_threadname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_sched_stats(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_sched_stats_enable(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #if COUNT_SYSCALLS STATIC int sysctl_docountsyscalls SYSCTL_HANDLER_ARGS; #endif /* COUNT_SYSCALLS */ #if defined(XNU_TARGET_OS_OSX) STATIC int sysctl_doprocargs SYSCTL_HANDLER_ARGS; #endif /* defined(XNU_TARGET_OS_OSX) */ STATIC int sysctl_doprocargs2 SYSCTL_HANDLER_ARGS; STATIC int sysctl_prochandle SYSCTL_HANDLER_ARGS; STATIC int sysctl_aiomax(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_aioprocmax(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_aiothreads(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_maxproc(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_osversion(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_sysctl_bootargs(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_maxvnodes(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_securelvl(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_domainname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_hostname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_procname(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_boottime(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_bootuuid(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_symfile(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #if CONFIG_NETBOOT STATIC int sysctl_netboot(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #endif #ifdef CONFIG_IMGSRC_ACCESS STATIC int sysctl_imgsrcdev(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #endif STATIC int sysctl_usrstack(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_usrstack64(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #if CONFIG_COREDUMP || CONFIG_UCOREDUMP STATIC int sysctl_coredump(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_suid_coredump(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #if CONFIG_UCOREDUMP STATIC int sysctl_ucoredump(struct sysctl_oid *, void *, int, struct sysctl_req *); #endif #endif STATIC int sysctl_delayterm(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_rage_vnode(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_kern_check_openevt(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #if DEVELOPMENT || DEBUG STATIC int sysctl_nx(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #endif STATIC int sysctl_loadavg(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_vm_toggle_address_reuse(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_swapusage(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int fetch_process_cputype( proc_t cur_proc, int *name, u_int namelen, cpu_type_t *cputype); STATIC int sysctl_sysctl_native(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_sysctl_cputype(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_safeboot(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_singleuser(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_minimalboot(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_slide(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #ifdef CONFIG_XNUPOST #include <tests/xnupost.h> STATIC int sysctl_debug_test_oslog_ctl(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_debug_test_stackshot_mutex_owner(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); STATIC int sysctl_debug_test_stackshot_rwlck_owner(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); #endif extern void IORegistrySetOSBuildVersion(char * build_version); extern int IOParseWorkloadConfig(workload_config_ctx_t *ctx, const char * buffer, size_t size); extern int IOUnparseWorkloadConfig(char *buffer, size_t *size); STATIC void fill_loadavg64(struct loadavg *la, struct user64_loadavg *la64) { la64->ldavg[0] = la->ldavg[0]; la64->ldavg[1] = la->ldavg[1]; la64->ldavg[2] = la->ldavg[2]; la64->fscale = (user64_long_t)la->fscale; } STATIC void fill_loadavg32(struct loadavg *la, struct user32_loadavg *la32) { la32->ldavg[0] = la->ldavg[0]; la32->ldavg[1] = la->ldavg[1]; la32->ldavg[2] = la->ldavg[2]; la32->fscale = (user32_long_t)la->fscale; } #if COUNT_SYSCALLS extern int do_count_syscalls; #endif #ifdef INSECURE int securelevel = -1; #else int securelevel; #endif STATIC int sysctl_handle_kern_threadname( __unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error; struct uthread *ut = current_uthread(); user_addr_t oldp = 0, newp = 0; size_t *oldlenp = NULL; size_t newlen = 0; oldp = req->oldptr; oldlenp = &(req->oldlen); newp = req->newptr; newlen = req->newlen; /* We want the current length, and maybe the string itself */ if (oldlenp) { /* if we have no thread name yet tell'em we want MAXTHREADNAMESIZE - 1 */ size_t currlen = MAXTHREADNAMESIZE - 1; if (ut->pth_name) { /* use length of current thread name */ currlen = strlen(ut->pth_name); } if (oldp) { if (*oldlenp < currlen) { return ENOMEM; } /* NOTE - we do not copy the NULL terminator */ if (ut->pth_name) { error = copyout(ut->pth_name, oldp, currlen); if (error) { return error; } } } /* return length of thread name minus NULL terminator (just like strlen) */ req->oldidx = currlen; } /* We want to set the name to something */ if (newp) { if (newlen > (MAXTHREADNAMESIZE - 1)) { return ENAMETOOLONG; } if (!ut->pth_name) { char *tmp_pth_name = (char *)kalloc_data(MAXTHREADNAMESIZE, Z_WAITOK | Z_ZERO); if (!tmp_pth_name) { return ENOMEM; } if (!OSCompareAndSwapPtr(NULL, tmp_pth_name, &ut->pth_name)) { kfree_data(tmp_pth_name, MAXTHREADNAMESIZE); return EBUSY; } } else { kernel_debug_string_simple(TRACE_STRING_THREADNAME_PREV, ut->pth_name); bzero(ut->pth_name, MAXTHREADNAMESIZE); } error = copyin(newp, ut->pth_name, newlen); if (error) { return error; } kernel_debug_string_simple(TRACE_STRING_THREADNAME, ut->pth_name); } return 0; } SYSCTL_PROC(_kern, KERN_THREADNAME, threadname, CTLFLAG_ANYBODY | CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_handle_kern_threadname, "A", ""); #define WORKLOAD_CONFIG_MAX_SIZE (128 * 1024 * 1024) /* Called locked - sysctl defined without CTLFLAG_LOCKED. */ static int sysctl_workload_config SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) char *plist_blob = NULL; kern_return_t ret = KERN_FAILURE; int error = -1; /* Only allow reading of workload config on non-RELEASE kernels. */ #if DEVELOPMENT || DEBUG const size_t buf_size = req->oldlen; if (!req->oldptr) { /* Just looking for the size to allocate. */ size_t size = 0; ret = IOUnparseWorkloadConfig(NULL, &size); if (ret != KERN_SUCCESS) { return ENOMEM; } error = SYSCTL_OUT(req, NULL, size); if (error) { return error; } } else { if (buf_size > (WORKLOAD_CONFIG_MAX_SIZE - 1) || buf_size == 0) { return EINVAL; } plist_blob = kalloc_data(buf_size, Z_WAITOK | Z_ZERO); if (!plist_blob) { return ENOMEM; } size_t size = buf_size; ret = IOUnparseWorkloadConfig(plist_blob, &size); if (ret != KERN_SUCCESS) { kfree_data(plist_blob, buf_size); return ENOMEM; } error = SYSCTL_OUT(req, plist_blob, MIN(buf_size, size)); /* If the buffer was too small to fit the entire config. */ if (buf_size < size) { error = ENOMEM; } kfree_data(plist_blob, buf_size); if (error) { return error; } } #endif /* DEVELOPMENT || DEBUG */ if (req->newptr) { size_t newlen = req->newlen; if (newlen > (WORKLOAD_CONFIG_MAX_SIZE - 1)) { return EINVAL; } workload_config_ctx_t *ctx = NULL; /* * Only allow workload_config_boot to be loaded once at boot by launchd. */ if (current_proc() == initproc && !workload_config_initialized(&workload_config_boot)) { ctx = &workload_config_boot; } else { #if DEVELOPMENT || DEBUG /* * Use the devel config context otherwise. If a devel config has been * initialized it will be used for lookups in place of the boot config. */ ctx = &workload_config_devel; if (workload_config_initialized(ctx)) { workload_config_free(ctx); } /* The devel context can be explicitly cleared by an empty string. */ if (newlen == 1) { return 0; } #else return EINVAL; #endif } plist_blob = kalloc_data(newlen + 1, Z_WAITOK | Z_ZERO); if (!plist_blob) { return ENOMEM; } error = copyin(req->newptr, plist_blob, newlen); if (error) { kfree_data(plist_blob, newlen + 1); return error; } plist_blob[newlen] = '\0'; ret = IOParseWorkloadConfig(ctx, plist_blob, newlen + 1); kfree_data(plist_blob, newlen + 1); return ret == KERN_SUCCESS ? 0 : EINVAL; } return 0; } SYSCTL_PROC(_kern, OID_AUTO, workload_config, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_MASKED, 0, 0, sysctl_workload_config, "A", "global workgroup configuration plist load/unload"); #define BSD_HOST 1 STATIC int sysctl_sched_stats(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { host_basic_info_data_t hinfo; kern_return_t kret; uint32_t size; uint32_t buf_size = 0; int changed; mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT; struct _processor_statistics_np *buf; int error; kret = host_info((host_t)BSD_HOST, HOST_BASIC_INFO, (host_info_t)&hinfo, &count); if (kret != KERN_SUCCESS) { return EINVAL; } size = sizeof(struct _processor_statistics_np) * (hinfo.logical_cpu_max + 2); /* One for RT Queue, One for Fair Share Queue */ if (req->oldlen < size) { return EINVAL; } buf_size = size; buf = (struct _processor_statistics_np *)kalloc_data(buf_size, Z_ZERO | Z_WAITOK); kret = get_sched_statistics(buf, &size); if (kret != KERN_SUCCESS) { error = EINVAL; goto out; } error = sysctl_io_opaque(req, buf, size, &changed); if (error) { goto out; } if (changed) { panic("Sched info changed?!"); } out: kfree_data(buf, buf_size); return error; } SYSCTL_PROC(_kern, OID_AUTO, sched_stats, CTLFLAG_LOCKED, 0, 0, sysctl_sched_stats, "-", ""); STATIC int sysctl_sched_stats_enable(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, __unused struct sysctl_req *req) { boolean_t active; int res; if (req->newlen != sizeof(active)) { return EINVAL; } res = copyin(req->newptr, &active, sizeof(active)); if (res != 0) { return res; } return set_sched_stats_active(active); } SYSCTL_PROC(_kern, OID_AUTO, sched_stats_enable, CTLFLAG_LOCKED | CTLFLAG_WR, 0, 0, sysctl_sched_stats_enable, "-", ""); extern uint32_t sched_debug_flags; SYSCTL_INT(_debug, OID_AUTO, sched, CTLFLAG_RW | CTLFLAG_LOCKED, &sched_debug_flags, 0, "scheduler debug"); #if (DEBUG || DEVELOPMENT) extern boolean_t doprnt_hide_pointers; SYSCTL_INT(_debug, OID_AUTO, hide_kernel_pointers, CTLFLAG_RW | CTLFLAG_LOCKED, &doprnt_hide_pointers, 0, "hide kernel pointers from log"); #endif extern int get_kernel_symfile(proc_t, char **); #if COUNT_SYSCALLS #define KERN_COUNT_SYSCALLS (KERN_OSTYPE + 1000) extern const unsigned int nsysent; extern int syscalls_log[]; extern const char *syscallnames[]; STATIC int sysctl_docountsyscalls SYSCTL_HANDLER_ARGS { __unused int cmd = oidp->oid_arg2; /* subcommand*/ __unused int *name = arg1; /* oid element argument vector */ __unused int namelen = arg2; /* number of oid element arguments */ int error, changed; int tmp; /* valid values passed in: * = 0 means don't keep called counts for each bsd syscall * > 0 means keep called counts for each bsd syscall * = 2 means dump current counts to the system log * = 3 means reset all counts * for example, to dump current counts: * sysctl -w kern.count_calls=2 */ error = sysctl_io_number(req, do_count_syscalls, sizeof(do_count_syscalls), &tmp, &changed); if (error != 0 || !changed) { return error; } if (tmp == 1) { do_count_syscalls = 1; } else if (tmp == 0 || tmp == 2 || tmp == 3) { for (int i = 0; i < nsysent; i++) { if (syscalls_log[i] != 0) { if (tmp == 2) { printf("%d calls - name %s \n", syscalls_log[i], syscallnames[i]); } else { syscalls_log[i] = 0; } } } do_count_syscalls = (tmp != 0); } return error; } SYSCTL_PROC(_kern, KERN_COUNT_SYSCALLS, count_syscalls, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ 0, /* Integer argument (arg2) */ sysctl_docountsyscalls, /* Handler function */ NULL, /* Data pointer */ ""); #endif /* COUNT_SYSCALLS */ /* * The following sysctl_* functions should not be used * any more, as they can only cope with callers in * user mode: Use new-style * sysctl_io_number() * sysctl_io_string() * sysctl_io_opaque() * instead. */ STATIC int sysdoproc_filt_KERN_PROC_PID(proc_t p, void * arg) { if (proc_getpid(p) != (pid_t)*(int*)arg) { return 0; } else { return 1; } } STATIC int sysdoproc_filt_KERN_PROC_PGRP(proc_t p, void * arg) { if (p->p_pgrpid != (pid_t)*(int*)arg) { return 0; } else { return 1; } } STATIC int sysdoproc_filt_KERN_PROC_TTY(proc_t p, void * arg) { struct pgrp *pg; dev_t dev = NODEV; if ((p->p_flag & P_CONTROLT) && (pg = proc_pgrp(p, NULL)) != PGRP_NULL) { dev = os_atomic_load(&pg->pg_session->s_ttydev, relaxed); pgrp_rele(pg); } return dev != NODEV && dev == (dev_t)*(int *)arg; } STATIC int sysdoproc_filt_KERN_PROC_UID(proc_t p, void * arg) { uid_t uid; smr_proc_task_enter(); uid = kauth_cred_getuid(proc_ucred_smr(p)); smr_proc_task_leave(); if (uid != (uid_t)*(int*)arg) { return 0; } else { return 1; } } STATIC int sysdoproc_filt_KERN_PROC_RUID(proc_t p, void * arg) { uid_t ruid; smr_proc_task_enter(); ruid = kauth_cred_getruid(proc_ucred_smr(p)); smr_proc_task_leave(); if (ruid != (uid_t)*(int*)arg) { return 0; } else { return 1; } } /* * try over estimating by 5 procs */ #define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc)) struct sysdoproc_args { size_t buflen; void *kprocp; boolean_t is_64_bit; user_addr_t dp; size_t needed; unsigned int sizeof_kproc; int *errorp; int uidcheck; int ruidcheck; int ttycheck; int uidval; }; int sysdoproc_callback(proc_t p, void *arg) { struct sysdoproc_args *args = arg; if (args->buflen >= args->sizeof_kproc) { if ((args->ruidcheck != 0) && (sysdoproc_filt_KERN_PROC_RUID(p, &args->uidval) == 0)) { return PROC_RETURNED; } if ((args->uidcheck != 0) && (sysdoproc_filt_KERN_PROC_UID(p, &args->uidval) == 0)) { return PROC_RETURNED; } if ((args->ttycheck != 0) && (sysdoproc_filt_KERN_PROC_TTY(p, &args->uidval) == 0)) { return PROC_RETURNED; } bzero(args->kprocp, args->sizeof_kproc); if (args->is_64_bit) { fill_user64_proc(p, args->kprocp); } else { fill_user32_proc(p, args->kprocp); } int error = copyout(args->kprocp, args->dp, args->sizeof_kproc); if (error) { *args->errorp = error; return PROC_RETURNED_DONE; } args->dp += args->sizeof_kproc; args->buflen -= args->sizeof_kproc; } args->needed += args->sizeof_kproc; return PROC_RETURNED; } SYSCTL_NODE(_kern, KERN_PROC, proc, CTLFLAG_RD | CTLFLAG_LOCKED, 0, ""); STATIC int sysctl_prochandle SYSCTL_HANDLER_ARGS { int cmd = oidp->oid_arg2; /* subcommand for multiple nodes */ int *name = arg1; /* oid element argument vector */ int namelen = arg2; /* number of oid element arguments */ user_addr_t where = req->oldptr;/* user buffer copy out address */ user_addr_t dp = where; size_t needed = 0; size_t buflen = where != USER_ADDR_NULL ? req->oldlen : 0; int error = 0; boolean_t is_64_bit = proc_is64bit(current_proc()); struct user32_kinfo_proc user32_kproc; struct user64_kinfo_proc user_kproc; int sizeof_kproc; void *kprocp; int (*filterfn)(proc_t, void *) = 0; struct sysdoproc_args args; int uidcheck = 0; int ruidcheck = 0; int ttycheck = 0; if (namelen != 1 && !(namelen == 0 && cmd == KERN_PROC_ALL)) { return EINVAL; } if (is_64_bit) { sizeof_kproc = sizeof(user_kproc); kprocp = &user_kproc; } else { sizeof_kproc = sizeof(user32_kproc); kprocp = &user32_kproc; } switch (cmd) { case KERN_PROC_PID: filterfn = sysdoproc_filt_KERN_PROC_PID; break; case KERN_PROC_PGRP: filterfn = sysdoproc_filt_KERN_PROC_PGRP; break; case KERN_PROC_TTY: ttycheck = 1; break; case KERN_PROC_UID: uidcheck = 1; break; case KERN_PROC_RUID: ruidcheck = 1; break; case KERN_PROC_ALL: break; default: /* must be kern.proc.<unknown> */ return ENOTSUP; } error = 0; args.buflen = buflen; args.kprocp = kprocp; args.is_64_bit = is_64_bit; args.dp = dp; args.needed = needed; args.errorp = &error; args.uidcheck = uidcheck; args.ruidcheck = ruidcheck; args.ttycheck = ttycheck; args.sizeof_kproc = sizeof_kproc; if (namelen) { args.uidval = name[0]; } proc_iterate((PROC_ALLPROCLIST | PROC_ZOMBPROCLIST), sysdoproc_callback, &args, filterfn, name); if (error) { return error; } dp = args.dp; needed = args.needed; if (where != USER_ADDR_NULL) { req->oldlen = dp - where; if (needed > req->oldlen) { return ENOMEM; } } else { needed += KERN_PROCSLOP; req->oldlen = needed; } /* adjust index so we return the right required/consumed amount */ req->oldidx += req->oldlen; return 0; } /* * We specify the subcommand code for multiple nodes as the 'req->arg2' value * in the sysctl declaration itself, which comes into the handler function * as 'oidp->oid_arg2'. * * For these particular sysctls, since they have well known OIDs, we could * have just obtained it from the '((int *)arg1)[0]' parameter, but that would * not demonstrate how to handle multiple sysctls that used OID_AUTO instead * of a well known value with a common handler function. This is desirable, * because we want well known values to "go away" at some future date. * * It should be noted that the value of '((int *)arg1)[1]' is used for many * an integer parameter to the subcommand for many of these sysctls; we'd * rather have used '((int *)arg1)[0]' for that, or even better, an element * in a structure passed in as the the 'newp' argument to sysctlbyname(3), * and then use leaf-node permissions enforcement, but that would have * necessitated modifying user space code to correspond to the interface * change, and we are striving for binary backward compatibility here; even * though these are SPI, and not intended for use by user space applications * which are not themselves system tools or libraries, some applications * have erroneously used them. */ SYSCTL_PROC(_kern_proc, KERN_PROC_ALL, all, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ KERN_PROC_ALL, /* Integer argument (arg2) */ sysctl_prochandle, /* Handler function */ NULL, /* Data is size variant on ILP32/LP64 */ ""); SYSCTL_PROC(_kern_proc, KERN_PROC_PID, pid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ KERN_PROC_PID, /* Integer argument (arg2) */ sysctl_prochandle, /* Handler function */ NULL, /* Data is size variant on ILP32/LP64 */ ""); SYSCTL_PROC(_kern_proc, KERN_PROC_TTY, tty, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ KERN_PROC_TTY, /* Integer argument (arg2) */ sysctl_prochandle, /* Handler function */ NULL, /* Data is size variant on ILP32/LP64 */ ""); SYSCTL_PROC(_kern_proc, KERN_PROC_PGRP, pgrp, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ KERN_PROC_PGRP, /* Integer argument (arg2) */ sysctl_prochandle, /* Handler function */ NULL, /* Data is size variant on ILP32/LP64 */ ""); SYSCTL_PROC(_kern_proc, KERN_PROC_UID, uid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ KERN_PROC_UID, /* Integer argument (arg2) */ sysctl_prochandle, /* Handler function */ NULL, /* Data is size variant on ILP32/LP64 */ ""); SYSCTL_PROC(_kern_proc, KERN_PROC_RUID, ruid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ KERN_PROC_RUID, /* Integer argument (arg2) */ sysctl_prochandle, /* Handler function */ NULL, /* Data is size variant on ILP32/LP64 */ ""); SYSCTL_PROC(_kern_proc, KERN_PROC_LCID, lcid, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ KERN_PROC_LCID, /* Integer argument (arg2) */ sysctl_prochandle, /* Handler function */ NULL, /* Data is size variant on ILP32/LP64 */ ""); /* * Fill in non-zero fields of an eproc structure for the specified process. */ STATIC void fill_user32_eproc(proc_t p, struct user32_eproc *__restrict ep) { struct pgrp *pg; struct session *sessp; kauth_cred_t my_cred; pg = proc_pgrp(p, &sessp); if (pg != PGRP_NULL) { ep->e_pgid = p->p_pgrpid; ep->e_jobc = pg->pg_jobc; if (sessp->s_ttyvp) { ep->e_flag = EPROC_CTTY; } } ep->e_ppid = p->p_ppid; smr_proc_task_enter(); my_cred = proc_ucred_smr(p); /* A fake historical pcred */ ep->e_pcred.p_ruid = kauth_cred_getruid(my_cred); ep->e_pcred.p_svuid = kauth_cred_getsvuid(my_cred); ep->e_pcred.p_rgid = kauth_cred_getrgid(my_cred); ep->e_pcred.p_svgid = kauth_cred_getsvgid(my_cred); /* A fake historical *kauth_cred_t */ unsigned long refcnt = os_atomic_load(&my_cred->cr_ref, relaxed); ep->e_ucred.cr_ref = (uint32_t)MIN(refcnt, UINT32_MAX); ep->e_ucred.cr_uid = kauth_cred_getuid(my_cred); ep->e_ucred.cr_ngroups = (short)posix_cred_get(my_cred)->cr_ngroups; bcopy(posix_cred_get(my_cred)->cr_groups, ep->e_ucred.cr_groups, NGROUPS * sizeof(gid_t)); my_cred = NOCRED; smr_proc_task_leave(); ep->e_tdev = NODEV; if (pg != PGRP_NULL) { if (p->p_flag & P_CONTROLT) { session_lock(sessp); ep->e_tdev = os_atomic_load(&sessp->s_ttydev, relaxed); ep->e_tpgid = sessp->s_ttypgrpid; session_unlock(sessp); } if (SESS_LEADER(p, sessp)) { ep->e_flag |= EPROC_SLEADER; } pgrp_rele(pg); } } /* * Fill in non-zero fields of an LP64 eproc structure for the specified process. */ STATIC void fill_user64_eproc(proc_t p, struct user64_eproc *__restrict ep) { struct pgrp *pg; struct session *sessp; kauth_cred_t my_cred; pg = proc_pgrp(p, &sessp); if (pg != PGRP_NULL) { ep->e_pgid = p->p_pgrpid; ep->e_jobc = pg->pg_jobc; if (sessp->s_ttyvp) { ep->e_flag = EPROC_CTTY; } } ep->e_ppid = p->p_ppid; smr_proc_task_enter(); my_cred = proc_ucred_smr(p); /* A fake historical pcred */ ep->e_pcred.p_ruid = kauth_cred_getruid(my_cred); ep->e_pcred.p_svuid = kauth_cred_getsvuid(my_cred); ep->e_pcred.p_rgid = kauth_cred_getrgid(my_cred); ep->e_pcred.p_svgid = kauth_cred_getsvgid(my_cred); /* A fake historical *kauth_cred_t */ unsigned long refcnt = os_atomic_load(&my_cred->cr_ref, relaxed); ep->e_ucred.cr_ref = (uint32_t)MIN(refcnt, UINT32_MAX); ep->e_ucred.cr_uid = kauth_cred_getuid(my_cred); ep->e_ucred.cr_ngroups = (short)posix_cred_get(my_cred)->cr_ngroups; bcopy(posix_cred_get(my_cred)->cr_groups, ep->e_ucred.cr_groups, NGROUPS * sizeof(gid_t)); my_cred = NOCRED; smr_proc_task_leave(); ep->e_tdev = NODEV; if (pg != PGRP_NULL) { if (p->p_flag & P_CONTROLT) { session_lock(sessp); ep->e_tdev = os_atomic_load(&sessp->s_ttydev, relaxed); ep->e_tpgid = sessp->s_ttypgrpid; session_unlock(sessp); } if (SESS_LEADER(p, sessp)) { ep->e_flag |= EPROC_SLEADER; } pgrp_rele(pg); } } /* * Fill in an eproc structure for the specified process. * bzeroed by our caller, so only set non-zero fields. */ STATIC void fill_user32_externproc(proc_t p, struct user32_extern_proc *__restrict exp) { exp->p_starttime.tv_sec = (user32_time_t)p->p_start.tv_sec; exp->p_starttime.tv_usec = p->p_start.tv_usec; exp->p_flag = p->p_flag; #if DEVELOPMENT || DEBUG if (p->p_lflag & P_LTRACED && !bootarg_hide_process_traced) { #else if (p->p_lflag & P_LTRACED) { #endif exp->p_flag |= P_TRACED; } if (p->p_lflag & P_LPPWAIT) { exp->p_flag |= P_PPWAIT; } if (p->p_lflag & P_LEXIT) { exp->p_flag |= P_WEXIT; } exp->p_stat = p->p_stat; exp->p_pid = proc_getpid(p); #if DEVELOPMENT || DEBUG if (bootarg_hide_process_traced) { exp->p_oppid = 0; } else #endif { exp->p_oppid = p->p_oppid; } /* Mach related */ exp->p_debugger = p->p_debugger; exp->sigwait = p->sigwait; /* scheduling */ #ifdef _PROC_HAS_SCHEDINFO_ exp->p_estcpu = p->p_estcpu; exp->p_pctcpu = p->p_pctcpu; exp->p_slptime = p->p_slptime; #endif exp->p_realtimer.it_interval.tv_sec = (user32_time_t)p->p_realtimer.it_interval.tv_sec; exp->p_realtimer.it_interval.tv_usec = (__int32_t)p->p_realtimer.it_interval.tv_usec; exp->p_realtimer.it_value.tv_sec = (user32_time_t)p->p_realtimer.it_value.tv_sec; exp->p_realtimer.it_value.tv_usec = (__int32_t)p->p_realtimer.it_value.tv_usec; exp->p_rtime.tv_sec = (user32_time_t)p->p_rtime.tv_sec; exp->p_rtime.tv_usec = (__int32_t)p->p_rtime.tv_usec; exp->p_sigignore = p->p_sigignore; exp->p_sigcatch = p->p_sigcatch; exp->p_priority = p->p_priority; exp->p_nice = p->p_nice; bcopy(&p->p_comm, &exp->p_comm, MAXCOMLEN); exp->p_xstat = (u_short)MIN(p->p_xstat, USHRT_MAX); exp->p_acflag = p->p_acflag; } /* * Fill in an LP64 version of extern_proc structure for the specified process. */ STATIC void fill_user64_externproc(proc_t p, struct user64_extern_proc *__restrict exp) { exp->p_starttime.tv_sec = p->p_start.tv_sec; exp->p_starttime.tv_usec = p->p_start.tv_usec; exp->p_flag = p->p_flag; #if DEVELOPMENT || DEBUG if (p->p_lflag & P_LTRACED && !bootarg_hide_process_traced) { #else if (p->p_lflag & P_LTRACED) { #endif exp->p_flag |= P_TRACED; } if (p->p_lflag & P_LPPWAIT) { exp->p_flag |= P_PPWAIT; } if (p->p_lflag & P_LEXIT) { exp->p_flag |= P_WEXIT; } exp->p_stat = p->p_stat; exp->p_pid = proc_getpid(p); #if DEVELOPMENT || DEBUG if (bootarg_hide_process_traced) { exp->p_oppid = 0; } else #endif { exp->p_oppid = p->p_oppid; } /* Mach related */ exp->p_debugger = p->p_debugger; exp->sigwait = p->sigwait; /* scheduling */ #ifdef _PROC_HAS_SCHEDINFO_ exp->p_estcpu = p->p_estcpu; exp->p_pctcpu = p->p_pctcpu; exp->p_slptime = p->p_slptime; #endif exp->p_realtimer.it_interval.tv_sec = p->p_realtimer.it_interval.tv_sec; exp->p_realtimer.it_interval.tv_usec = p->p_realtimer.it_interval.tv_usec; exp->p_realtimer.it_value.tv_sec = p->p_realtimer.it_value.tv_sec; exp->p_realtimer.it_value.tv_usec = p->p_realtimer.it_value.tv_usec; exp->p_rtime.tv_sec = p->p_rtime.tv_sec; exp->p_rtime.tv_usec = p->p_rtime.tv_usec; exp->p_sigignore = p->p_sigignore; exp->p_sigcatch = p->p_sigcatch; exp->p_priority = p->p_priority; exp->p_nice = p->p_nice; bcopy(&p->p_comm, &exp->p_comm, MAXCOMLEN); exp->p_xstat = (u_short)MIN(p->p_xstat, USHRT_MAX); exp->p_acflag = p->p_acflag; } STATIC void fill_user32_proc(proc_t p, struct user32_kinfo_proc *__restrict kp) { /* on a 64 bit kernel, 32 bit users get some truncated information */ fill_user32_externproc(p, &kp->kp_proc); fill_user32_eproc(p, &kp->kp_eproc); } STATIC void fill_user64_proc(proc_t p, struct user64_kinfo_proc *__restrict kp) { fill_user64_externproc(p, &kp->kp_proc); fill_user64_eproc(p, &kp->kp_eproc); } #if defined(XNU_TARGET_OS_OSX) /* * Return the top *sizep bytes of the user stack, or the entire area of the * user stack down through the saved exec_path, whichever is smaller. */ STATIC int sysctl_doprocargs SYSCTL_HANDLER_ARGS { __unused int cmd = oidp->oid_arg2; /* subcommand*/ int *name = arg1; /* oid element argument vector */ int namelen = arg2; /* number of oid element arguments */ user_addr_t oldp = req->oldptr; /* user buffer copy out address */ size_t *oldlenp = &req->oldlen; /* user buffer copy out size */ // user_addr_t newp = req->newptr; /* user buffer copy in address */ // size_t newlen = req->newlen; /* user buffer copy in size */ int error; error = sysctl_procargsx( name, namelen, oldp, oldlenp, current_proc(), 0); /* adjust index so we return the right required/consumed amount */ if (!error) { req->oldidx += req->oldlen; } return error; } SYSCTL_PROC(_kern, KERN_PROCARGS, procargs, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ 0, /* Integer argument (arg2) */ sysctl_doprocargs, /* Handler function */ NULL, /* Data pointer */ ""); #endif /* defined(XNU_TARGET_OS_OSX) */ STATIC int sysctl_doprocargs2 SYSCTL_HANDLER_ARGS { __unused int cmd = oidp->oid_arg2; /* subcommand*/ int *name = arg1; /* oid element argument vector */ int namelen = arg2; /* number of oid element arguments */ user_addr_t oldp = req->oldptr; /* user buffer copy out address */ size_t *oldlenp = &req->oldlen; /* user buffer copy out size */ // user_addr_t newp = req->newptr; /* user buffer copy in address */ // size_t newlen = req->newlen; /* user buffer copy in size */ int error; error = sysctl_procargsx( name, namelen, oldp, oldlenp, current_proc(), 1); /* adjust index so we return the right required/consumed amount */ if (!error) { req->oldidx += req->oldlen; } return error; } SYSCTL_PROC(_kern, KERN_PROCARGS2, procargs2, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, /* Pointer argument (arg1) */ 0, /* Integer argument (arg2) */ sysctl_doprocargs2, /* Handler function */ NULL, /* Data pointer */ ""); #define SYSCTL_PROCARGS_READ_ENVVARS_ENTITLEMENT "com.apple.private.read-environment-variables" STATIC int sysctl_procargsx(int *name, u_int namelen, user_addr_t where, size_t *sizep, proc_t cur_proc, int argc_yes) { assert(sizep != NULL); proc_t p = NULL; size_t buflen = where != USER_ADDR_NULL ? *sizep : 0; int error = 0; struct _vm_map *proc_map = NULL; struct task * task; vm_map_copy_t tmp = NULL; user_addr_t arg_addr; size_t arg_size; caddr_t data; size_t argslen = 0; size_t size = 0; vm_offset_t copy_start = 0, copy_end; vm_offset_t smallbuffer_start; kern_return_t ret; int pid; uid_t uid; int argc = -1; size_t argvsize; size_t remaining; size_t current_arg_index; size_t current_arg_len; const char * current_arg; bool omit_env_vars = true; user_addr_t user_stack; vm_map_offset_t effective_page_mask; if (namelen < 1) { error = EINVAL; goto finish; } if (argc_yes) { buflen -= sizeof(int); /* reserve first word to return argc */ } /* we only care about buflen when where (oldp from sysctl) is not NULL. */ /* when where (oldp from sysctl) is NULL and sizep (oldlenp from sysctl */ /* is not NULL then the caller wants us to return the length needed to */ /* hold the data we would return */ if (where != USER_ADDR_NULL && (buflen <= 0 || buflen > ARG_MAX)) { error = EINVAL; goto finish; } /* * Lookup process by pid */ pid = name[0]; p = proc_find(pid); if (p == NULL) { error = EINVAL; goto finish; } /* Allow reading environment variables if any of the following are true: * - kernel is DEVELOPMENT || DEBUG * - target process is same as current_proc() * - target process is not cs_restricted * - SIP is off * - caller has an entitlement */ #if DEVELOPMENT || DEBUG omit_env_vars = false; #endif if (p == current_proc() || !cs_restricted(p) || #if CONFIG_CSR csr_check(CSR_ALLOW_UNRESTRICTED_DTRACE) == 0 || #endif IOCurrentTaskHasEntitlement(SYSCTL_PROCARGS_READ_ENVVARS_ENTITLEMENT) ) { omit_env_vars = false; } /* * Copy the top N bytes of the stack. * On all machines we have so far, the stack grows * downwards. * * If the user expects no more than N bytes of * argument list, use that as a guess for the * size. */ if (!p->user_stack) { error = EINVAL; goto finish; } /* save off argc, argslen, user_stack before releasing the proc */ argc = p->p_argc; argslen = p->p_argslen; user_stack = p->user_stack; /* * When these sysctls were introduced, the first string in the strings * section was just the bare path of the executable. However, for security * reasons we now prefix this string with executable_path= so it can be * parsed getenv style. To avoid binary compatability issues with exising * callers of this sysctl, we strip it off here. * (rdar://problem/13746466) */ #define EXECUTABLE_KEY "executable_path=" argslen -= strlen(EXECUTABLE_KEY); if (where == USER_ADDR_NULL && !omit_env_vars) { /* caller only wants to know length of proc args data. * If we don't need to omit environment variables, we can skip * copying the target process stack */ goto calculate_size; } smr_proc_task_enter(); uid = kauth_cred_getuid(proc_ucred_smr(p)); smr_proc_task_leave(); if ((uid != kauth_cred_getuid(kauth_cred_get())) && suser(kauth_cred_get(), &cur_proc->p_acflag)) { error = EINVAL; goto finish; } /* * Before we can block (any VM code), make another * reference to the map to keep it alive. We do * that by getting a reference on the task itself. * * Additionally, if the task is not IPC active, we * must fail early. Other tasks can't yet look up * this task's task port to make Mach API calls, so * we shouldn't make such calls on their behalf. */ task = proc_task(p); if (task == NULL || !task_is_ipc_active(task)) { error = EINVAL; goto finish; } /* * Once we have a task reference we can convert that into a * map reference, which we will use in the calls below. The * task/process may change its map after we take this reference * (see execve), but the worst that will happen then is a return * of stale info (which is always a possibility). */ task_reference(task); proc_rele(p); p = NULL; proc_map = get_task_map_reference(task); task_deallocate(task); if (proc_map == NULL) { error = EINVAL; goto finish; } effective_page_mask = vm_map_page_mask(proc_map); arg_size = vm_map_round_page(argslen, effective_page_mask); arg_addr = user_stack - arg_size; ret = kmem_alloc(kernel_map, ©_start, arg_size, KMA_DATA | KMA_ZERO, VM_KERN_MEMORY_BSD); if (ret != KERN_SUCCESS) { error = ENOMEM; goto finish; } copy_end = copy_start + arg_size; if (vm_map_copyin(proc_map, (vm_map_address_t)arg_addr, (vm_map_size_t)arg_size, FALSE, &tmp) != KERN_SUCCESS) { error = EIO; goto finish; } /* * Now that we've done the copyin from the process' * map, we can release the reference to it. */ vm_map_deallocate(proc_map); proc_map = NULL; if (vm_map_copy_overwrite(kernel_map, (vm_map_address_t)copy_start, tmp, (vm_map_size_t) arg_size, #if HAS_MTE FALSE, #endif FALSE) != KERN_SUCCESS) { error = EIO; goto finish; } /* tmp was consumed */ tmp = NULL; if (omit_env_vars) { argvsize = 0; /* Iterate over everything in argv, plus one for the bare executable path */ for (current_arg_index = 0; current_arg_index < argc + 1 && argvsize < argslen; ++current_arg_index) { current_arg = (const char *)(copy_end - argslen) + argvsize; remaining = argslen - argvsize; current_arg_len = strnlen(current_arg, remaining); if (current_arg_len < remaining) { /* We have space for the null terminator */ current_arg_len += 1; if (current_arg_index == 0) { /* The bare executable path may have multiple null bytes after it for alignment */ while (current_arg_len < remaining && current_arg[current_arg_len] == 0) { current_arg_len += 1; } } } argvsize += current_arg_len; } assert(argvsize <= argslen); /* Adjust argslen and copy_end to make the copyout range extend to the end of argv */ copy_end = copy_end - argslen + argvsize; argslen = argvsize; } if (where == USER_ADDR_NULL) { /* Skip copyout */ goto calculate_size; } if (buflen >= argslen) { data = (caddr_t) (copy_end - argslen); size = argslen; } else { /* * Before rdar://25397314, this function contained incorrect logic when buflen is less * than argslen. The problem was that it copied in `buflen` bytes from the end of the target * process user stack into the beginning of a buffer of size round_page(buflen), and then * copied out `buflen` bytes from the end of this buffer. The effect of this was that * the caller of this sysctl would get zeros at the end of their buffer. * * To preserve this behavior, bzero everything from copy_end-round_page(buflen)+buflen to the * end of the buffer. This emulates copying in only `buflen` bytes. * * * In the old code: * * copy_start .... size: round_page(buflen) .... copy_end * [---copied in data (size: buflen)---|--- zeros ----------] * ^ * data = copy_end - buflen * * * In the new code: * copy_start .... size: round_page(p->argslen) .... full copy_end * ^ ....................... p->argslen ...............................^ * ^ ^ truncated copy_end ^ * ^ ^ ^ ^ * ^ ................ argslen ........................ ^ * ^ ^ ^ ^ * [-------copied in data (size: round_page(p->argslen))-------:----env vars---] * ^ ^ * ^ data = copy_end - buflen * smallbuffer_start = max(copy_end - round_page(buflen), copy_start) * * * Full copy_end: copy_end calculated from copy_start + round_page(p->argslen) * Truncated copy_end: copy_end after truncation to remove environment variables. * * If environment variables were omitted, then we use the truncated copy_end, otherwise * we use full copy_end. * * smallbuffer_start: represents where copy_start would be in the old code. * data: The beginning of the region we copyout */ smallbuffer_start = copy_end - vm_map_round_page(buflen, effective_page_mask); if (smallbuffer_start < copy_start) { smallbuffer_start = copy_start; } bzero((void *)(smallbuffer_start + buflen), copy_end - (smallbuffer_start + buflen)); data = (caddr_t) (copy_end - buflen); size = buflen; } if (argc_yes) { /* Put processes argc as the first word in the copyout buffer */ suword(where, argc); error = copyout(data, (where + sizeof(int)), size); size += sizeof(int); } else { error = copyout(data, where, size); /* * Make the old PROCARGS work to return the executable's path * But, only if there is enough space in the provided buffer * * on entry: data [possibily] points to the beginning of the path * * Note: we keep all pointers&sizes aligned to word boundries */ if ((!error) && (buflen > 0 && (u_int)buflen > size)) { int binPath_sz, alignedBinPath_sz = 0; int extraSpaceNeeded, addThis; user_addr_t placeHere; char * str = (char *) data; size_t max_len = size; /* Some apps are really bad about messing up their stacks * So, we have to be extra careful about getting the length * of the executing binary. If we encounter an error, we bail. */ /* Limit ourselves to PATH_MAX paths */ if (max_len > PATH_MAX) { max_len = PATH_MAX; } binPath_sz = 0; while ((binPath_sz < max_len - 1) && (*str++ != 0)) { binPath_sz++; } /* If we have a NUL terminator, copy it, too */ if (binPath_sz < max_len - 1) { binPath_sz += 1; } /* Pre-Flight the space requiremnts */ /* Account for the padding that fills out binPath to the next word */ alignedBinPath_sz += (binPath_sz & (sizeof(int) - 1)) ? (sizeof(int) - (binPath_sz & (sizeof(int) - 1))) : 0; placeHere = where + size; /* Account for the bytes needed to keep placeHere word aligned */ addThis = (placeHere & (sizeof(int) - 1)) ? (sizeof(int) - (placeHere & (sizeof(int) - 1))) : 0; /* Add up all the space that is needed */ extraSpaceNeeded = alignedBinPath_sz + addThis + binPath_sz + (4 * sizeof(int)); /* is there is room to tack on argv[0]? */ if ((buflen & ~(sizeof(int) - 1)) >= (size + extraSpaceNeeded)) { placeHere += addThis; suword(placeHere, 0); placeHere += sizeof(int); suword(placeHere, 0xBFFF0000); placeHere += sizeof(int); suword(placeHere, 0); placeHere += sizeof(int); error = copyout(data, placeHere, binPath_sz); if (!error) { placeHere += binPath_sz; suword(placeHere, 0); size += extraSpaceNeeded; } } } } calculate_size: /* Size has already been calculated for the where != NULL case */ if (where == USER_ADDR_NULL) { size = argslen; if (argc_yes) { size += sizeof(int); } else { /* * old PROCARGS will return the executable's path and plus some * extra space for work alignment and data tags */ size += PATH_MAX + (6 * sizeof(int)); } size += (size & (sizeof(int) - 1)) ? (sizeof(int) - (size & (sizeof(int) - 1))) : 0; } *sizep = size; finish: if (p != NULL) { proc_rele(p); } if (tmp != NULL) { vm_map_copy_discard(tmp); } if (proc_map != NULL) { vm_map_deallocate(proc_map); } if (copy_start != (vm_offset_t) 0) { kmem_free(kernel_map, copy_start, arg_size); } return error; } /* * Max number of concurrent aio requests */ STATIC int sysctl_aiomax (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, aio_max_requests, sizeof(int), &new_value, &changed); if (changed) { /* make sure the system-wide limit is greater than the per process limit */ if (new_value >= aio_max_requests_per_process && new_value <= AIO_MAX_REQUESTS) { aio_max_requests = new_value; } else { error = EINVAL; } } return error; } /* * Max number of concurrent aio requests per process */ STATIC int sysctl_aioprocmax (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, aio_max_requests_per_process, sizeof(int), &new_value, &changed); if (changed) { /* make sure per process limit is less than the system-wide limit */ if (new_value <= aio_max_requests && new_value >= AIO_LISTIO_MAX) { aio_max_requests_per_process = new_value; } else { error = EINVAL; } } return error; } /* * Max number of async IO worker threads */ STATIC int sysctl_aiothreads (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, aio_worker_threads, sizeof(int), &new_value, &changed); if (changed) { /* we only allow an increase in the number of worker threads */ if (new_value > aio_worker_threads) { _aio_create_worker_threads((new_value - aio_worker_threads)); aio_worker_threads = new_value; } else { error = EINVAL; } } return error; } /* * System-wide limit on the max number of processes */ STATIC int sysctl_maxproc (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, maxproc, sizeof(int), &new_value, &changed); if (changed) { AUDIT_ARG(value32, new_value); /* make sure the system-wide limit is less than the configured hard * limit set at kernel compilation */ if (new_value <= hard_maxproc && new_value > 0) { maxproc = new_value; } else { error = EINVAL; } } return error; } #if CONFIG_SCHED_SMT STATIC int sysctl_sched_enable_smt (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, sched_enable_smt, sizeof(int), &new_value, &changed); if (error) { return error; } kern_return_t kret = KERN_SUCCESS; if (changed) { AUDIT_ARG(value32, new_value); if (new_value == 0) { sched_enable_smt = 0; kret = enable_smt_processors(false); } else { sched_enable_smt = 1; kret = enable_smt_processors(true); } } switch (kret) { case KERN_SUCCESS: error = 0; break; case KERN_INVALID_ARGUMENT: error = EINVAL; break; case KERN_FAILURE: error = EBUSY; break; default: error = ENOENT; break; } return error; } #else /* CONFIG_SCHED_SMT */ STATIC int sysctl_sched_enable_smt (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, __unused struct sysctl_req *req) { return 0; } #endif /* CONFIG_SCHED_SMT */ SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, ostype, 0, ""); SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, osrelease, 0, ""); SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, BSD, ""); SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, version, 0, ""); SYSCTL_STRING(_kern, OID_AUTO, uuid, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &kernel_uuid_string[0], 0, ""); SYSCTL_STRING(_kern, OID_AUTO, osbuildconfig, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLFLAG_MASKED, &osbuild_config[0], 0, ""); #if DEBUG #ifndef DKPR #define DKPR 1 #endif #endif #if DKPR int debug_kprint_syscall = 0; char debug_kprint_syscall_process[MAXCOMLEN + 1]; /* Thread safe: bits and string value are not used to reclaim state */ SYSCTL_INT(_debug, OID_AUTO, kprint_syscall, CTLFLAG_RW | CTLFLAG_LOCKED, &debug_kprint_syscall, 0, "kprintf syscall tracing"); SYSCTL_STRING(_debug, OID_AUTO, kprint_syscall_process, CTLFLAG_RW | CTLFLAG_LOCKED, debug_kprint_syscall_process, sizeof(debug_kprint_syscall_process), "name of process for kprintf syscall tracing"); int debug_kprint_current_process(const char **namep) { struct proc *p = current_proc(); if (p == NULL) { return 0; } if (debug_kprint_syscall_process[0]) { /* user asked to scope tracing to a particular process name */ if (0 == strncmp(debug_kprint_syscall_process, p->p_comm, sizeof(debug_kprint_syscall_process))) { /* no value in telling the user that we traced what they asked */ if (namep) { *namep = NULL; } return 1; } else { return 0; } } /* trace all processes. Tell user what we traced */ if (namep) { *namep = p->p_comm; } return 1; } #endif /* PR-5293665: need to use a callback function for kern.osversion to set * osversion in IORegistry */ STATIC int sysctl_osversion(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { int rval = 0; rval = sysctl_handle_string(oidp, arg1, arg2, req); if (req->newptr) { IORegistrySetOSBuildVersion((char *)arg1); } return rval; } SYSCTL_PROC(_kern, KERN_OSVERSION, osversion, CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, osversion, 256 /* OSVERSIZE*/, sysctl_osversion, "A", ""); static bool _already_set_or_not_launchd(struct sysctl_req *req, char *val) { if (req->newptr != 0) { /* * Can only ever be set by launchd, and only once at boot. */ if (proc_getpid(req->p) != 1 || val[0] != '\0') { return true; } } return false; } #define kRootsInstalledReadWriteEntitlement "com.apple.private.roots-installed-read-write" #define kRootsInstalledReadOnlyEntitlement "com.apple.private.roots-installed-read-only" uint64_t roots_installed = 0; static int sysctl_roots_installed (__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { int error = 0; if (req->newptr != 0) { /* a ReadWrite entitlement is required for updating this syscl * meanwhile, only allow write once */ if (!IOCurrentTaskHasEntitlement(kRootsInstalledReadWriteEntitlement) || (roots_installed != 0)) { return EPERM; } } else { /* for reader of this sysctl, need either ReadWrite or ReadOnly entitlement */ if (!IOCurrentTaskHasEntitlement(kRootsInstalledReadWriteEntitlement) && !IOCurrentTaskHasEntitlement(kRootsInstalledReadOnlyEntitlement)) { return EPERM; } } error = sysctl_handle_quad(oidp, arg1, arg2, req); return error; } SYSCTL_PROC(_kern, OID_AUTO, roots_installed, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, &roots_installed, sizeof(roots_installed), sysctl_roots_installed, "Q", ""); #if XNU_TARGET_OS_OSX static int sysctl_system_version_compat (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int oldval = (task_has_system_version_compat_enabled(current_task())); int new_value = 0, changed = 0; int error = sysctl_io_number(req, oldval, sizeof(int), &new_value, &changed); if (changed) { task_set_system_version_compat_enabled(current_task(), (new_value)); } return error; } SYSCTL_PROC(_kern, OID_AUTO, system_version_compat, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, sysctl_system_version_compat, "A", ""); #endif /* XNU_TARGET_OS_OSX */ #if XNU_TARGET_OS_OSX || defined(XNU_EXPERIMENTAL_SYSTEM_VERSION_COMPAT) char osproductversioncompat[48] = { '\0' }; static int sysctl_osproductversioncompat(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { if (_already_set_or_not_launchd(req, osproductversioncompat)) { return EPERM; } return sysctl_handle_string(oidp, arg1, arg2, req); } SYSCTL_PROC(_kern, OID_AUTO, osproductversioncompat, CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, osproductversioncompat, sizeof(osproductversioncompat), sysctl_osproductversioncompat, "A", "The ProductVersion from SystemVersionCompat.plist"); #endif /* XNU_TARGET_OS_OSX || defined(XNU_EXPERIMENTAL_SYSTEM_VERSION_COMPAT) */ char osproductversion[48] = { '\0' }; static char iossupportversion_string[48] = { '\0' }; #if defined(XNU_EXPERIMENTAL_SYSTEM_VERSION_COMPAT) /* * Equivalent to dyld_program_sdk_at_least(dyld_fall_2025_os_versions). */ static bool proc_2025_fall_os_sdk_or_later(struct proc *p) { const uint32_t proc_sdk_ver = proc_sdk(p); switch (proc_platform(p)) { case PLATFORM_MACOS: return proc_sdk_ver >= 0x00100000; // DYLD_MACOSX_VERSION_16_0 case PLATFORM_XROS: case PLATFORM_XROSSIMULATOR: return proc_sdk_ver >= 0x00030000; // DYLD_VISIONOS_VERSION_3_0 case PLATFORM_IOS: case PLATFORM_IOSSIMULATOR: case PLATFORM_MACCATALYST: return proc_sdk_ver >= 0x00130000; // DYLD_IOS_VERSION_19_0 case PLATFORM_BRIDGEOS: return proc_sdk_ver >= 0x000a0000; // DYLD_BRIDGEOS_VERSION_10_0 case PLATFORM_TVOS: case PLATFORM_TVOSSIMULATOR: return proc_sdk_ver >= 0x00130000; // DYLD_TVOS_VERSION_19_0 case PLATFORM_WATCHOS: case PLATFORM_WATCHOSSIMULATOR: return proc_sdk_ver >= 0x000c0000; // DYLD_WATCHOS_VERSION_12_0 default: return true; } } #endif /* defined(XNU_EXPERIMENTAL_SYSTEM_VERSION_COMPAT) */ static int sysctl_osproductversion(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { if (_already_set_or_not_launchd(req, osproductversion)) { return EPERM; } #if XNU_TARGET_OS_OSX if (task_has_system_version_compat_enabled(current_task()) && (osproductversioncompat[0] != '\0')) { return sysctl_handle_string(oidp, osproductversioncompat, arg2, req); } #endif /* XNU_TARGET_OS_OSX */ #if defined(XNU_TARGET_OS_XR) if (proc_platform(req->p) == PLATFORM_IOS && (iossupportversion_string[0] != '\0')) { return sysctl_handle_string(oidp, iossupportversion_string, arg2, req); } #endif /* defined(XNU_TARGET_OS_XR) */ #if defined(XNU_EXPERIMENTAL_SYSTEM_VERSION_COMPAT) if (!proc_2025_fall_os_sdk_or_later(req->p) && (osproductversioncompat[0] != '\0')) { return sysctl_handle_string(oidp, osproductversioncompat, arg2, req); } #endif /* defined(XNU_EXPERIMENTAL_SYSTEM_VERSION_COMPAT) */ return sysctl_handle_string(oidp, arg1, arg2, req); } #if XNU_TARGET_OS_OSX static_assert(sizeof(osproductversioncompat) == sizeof(osproductversion), "osproductversion size matches osproductversioncompat size"); #endif SYSCTL_PROC(_kern, OID_AUTO, osproductversion, CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, osproductversion, sizeof(osproductversion), sysctl_osproductversion, "A", "The ProductVersion from SystemVersion.plist"); char osreleasetype[OSRELEASETYPE_SIZE] = { '\0' }; STATIC int sysctl_osreleasetype(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { if (_already_set_or_not_launchd(req, osreleasetype)) { return EPERM; } return sysctl_handle_string(oidp, arg1, arg2, req); } void reset_osreleasetype(void); void reset_osreleasetype(void) { memset(osreleasetype, 0, sizeof(osreleasetype)); } SYSCTL_PROC(_kern, OID_AUTO, osreleasetype, CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, osreleasetype, sizeof(osreleasetype), sysctl_osreleasetype, "A", "The ReleaseType from SystemVersion.plist"); STATIC int sysctl_iossupportversion(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { if (_already_set_or_not_launchd(req, iossupportversion_string)) { return EPERM; } #if defined(XNU_TARGET_OS_XR) if (proc_platform(req->p) == PLATFORM_IOS) { /* return empty string for iOS processes to match how this would behave on iOS */ return sysctl_handle_string(oidp, "", arg2, req); } else { /* native processes see the actual value */ return sysctl_handle_string(oidp, arg1, arg2, req); } #else return sysctl_handle_string(oidp, arg1, arg2, req); #endif } SYSCTL_PROC(_kern, OID_AUTO, iossupportversion, CTLFLAG_RW | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, iossupportversion_string, sizeof(iossupportversion_string), sysctl_iossupportversion, "A", "The iOSSupportVersion from SystemVersion.plist"); static uint64_t osvariant_status = 0; STATIC int sysctl_osvariant_status(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { if (req->newptr != 0) { /* * Can only ever be set by launchd, and only once. * Reset by usrctl() -> reset_osvariant_status() during * userspace reboot, since userspace could reboot into * a different variant. */ if (proc_getpid(req->p) != 1 || osvariant_status != 0) { return EPERM; } } int err = sysctl_handle_quad(oidp, arg1, arg2, req); reset_debug_syscall_rejection_mode(); return err; } SYSCTL_PROC(_kern, OID_AUTO, osvariant_status, CTLFLAG_RW | CTLTYPE_QUAD | CTLFLAG_LOCKED | CTLFLAG_MASKED, &osvariant_status, sizeof(osvariant_status), sysctl_osvariant_status, "Q", "Opaque flags used to cache OS variant information"); static bool _os_variant_check_disabled(enum os_variant_property property) { return (osvariant_status >> (32 + property)) & 0x1; } static bool _os_variant_has(enum os_variant_status_flags_positions p) { return ((osvariant_status >> (p * OS_VARIANT_STATUS_BIT_WIDTH)) & OS_VARIANT_STATUS_MASK) == OS_VARIANT_S_YES; } bool os_variant_has_internal_diagnostics(__unused const char *subsystem) { if (_os_variant_check_disabled(OS_VARIANT_PROPERTY_DIAGNOSTICS)) { return false; } #if XNU_TARGET_OS_OSX return _os_variant_has(OS_VARIANT_SFP_INTERNAL_CONTENT) || _os_variant_has(OS_VARIANT_SFP_INTERNAL_DIAGS_PROFILE); #else return _os_variant_has(OS_VARIANT_SFP_INTERNAL_RELEASE_TYPE); #endif /* XNU_TARGET_OS_OSX */ } void reset_osvariant_status(void); void reset_osvariant_status(void) { osvariant_status = 0; reset_debug_syscall_rejection_mode(); } extern void commpage_update_dyld_flags(uint64_t); TUNABLE_WRITEABLE(uint64_t, dyld_flags, "dyld_flags", 0); STATIC int sysctl_dyld_flags(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { /* * Can only ever be set by launchd, possibly several times * as dyld may change its mind after a userspace reboot. */ if (req->newptr != 0 && proc_getpid(req->p) != 1) { return EPERM; } int res = sysctl_handle_quad(oidp, arg1, arg2, req); if (req->newptr && res == 0) { commpage_update_dyld_flags(dyld_flags); } return res; } SYSCTL_PROC(_kern, OID_AUTO, dyld_flags, CTLFLAG_RW | CTLTYPE_QUAD | CTLFLAG_LOCKED | CTLFLAG_MASKED, &dyld_flags, sizeof(dyld_flags), sysctl_dyld_flags, "Q", "Opaque flags used to cache dyld system-wide configuration"); #if defined(XNU_TARGET_OS_BRIDGE) char macosproductversion[MACOS_VERS_LEN] = { '\0' }; SYSCTL_STRING(_kern, OID_AUTO, macosproductversion, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &macosproductversion[0], MACOS_VERS_LEN, "The currently running macOS ProductVersion (from SystemVersion.plist on macOS)"); char macosversion[MACOS_VERS_LEN] = { '\0' }; SYSCTL_STRING(_kern, OID_AUTO, macosversion, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &macosversion[0], MACOS_VERS_LEN, "The currently running macOS build version"); #endif STATIC int sysctl_sysctl_bootargs (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error; char buf[BOOT_LINE_LENGTH]; strlcpy(buf, PE_boot_args(), BOOT_LINE_LENGTH); error = sysctl_io_string(req, buf, BOOT_LINE_LENGTH, 0, NULL); return error; } SYSCTL_PROC(_kern, OID_AUTO, bootargs, CTLFLAG_LOCKED | CTLFLAG_RD | CTLFLAG_KERN | CTLTYPE_STRING, NULL, 0, sysctl_sysctl_bootargs, "A", "bootargs"); STATIC int sysctl_kernelcacheuuid(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { int rval = ENOENT; if (kernelcache_uuid_valid) { rval = sysctl_handle_string(oidp, arg1, arg2, req); } return rval; } SYSCTL_PROC(_kern, OID_AUTO, kernelcacheuuid, CTLFLAG_RD | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, kernelcache_uuid_string, sizeof(kernelcache_uuid_string), sysctl_kernelcacheuuid, "A", ""); STATIC int sysctl_systemfilesetuuid(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { int rval = ENOENT; if (pageablekc_uuid_valid) { rval = sysctl_handle_string(oidp, arg1, arg2, req); } return rval; } SYSCTL_PROC(_kern, OID_AUTO, systemfilesetuuid, CTLFLAG_RD | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, pageablekc_uuid_string, sizeof(pageablekc_uuid_string), sysctl_systemfilesetuuid, "A", ""); STATIC int sysctl_auxiliaryfilesetuuid(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { int rval = ENOENT; if (auxkc_uuid_valid) { rval = sysctl_handle_string(oidp, arg1, arg2, req); } return rval; } SYSCTL_PROC(_kern, OID_AUTO, auxiliaryfilesetuuid, CTLFLAG_RD | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, auxkc_uuid_string, sizeof(auxkc_uuid_string), sysctl_auxiliaryfilesetuuid, "A", ""); STATIC int sysctl_filesetuuid(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int rval = ENOENT; kc_format_t kcformat; kernel_mach_header_t *mh; void *uuid = NULL; unsigned long uuidlen = 0; uuid_string_t uuid_str; if (!PE_get_primary_kc_format(&kcformat) || kcformat != KCFormatFileset) { return rval; } mh = (kernel_mach_header_t *)PE_get_kc_header(KCKindPrimary); uuid = getuuidfromheader(mh, &uuidlen); if ((uuid != NULL) && (uuidlen == sizeof(uuid_t))) { uuid_unparse_upper(*(uuid_t *)uuid, uuid_str); rval = sysctl_io_string(req, (char *)uuid_str, sizeof(uuid_str), 0, NULL); } return rval; } SYSCTL_PROC(_kern, OID_AUTO, filesetuuid, CTLFLAG_RD | CTLFLAG_KERN | CTLTYPE_STRING | CTLFLAG_LOCKED, NULL, 0, sysctl_filesetuuid, "A", ""); SYSCTL_INT(_kern, KERN_MAXFILES, maxfiles, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &maxfiles, 0, ""); SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, ARG_MAX, ""); SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, _POSIX_VERSION, ""); SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, NGROUPS_MAX, ""); SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, 1, ""); #if 1 /* _POSIX_SAVED_IDS from <unistd.h> */ SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, 1, ""); #else SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, NULL, 0, ""); #endif SYSCTL_INT(_kern, OID_AUTO, num_files, CTLFLAG_RD | CTLFLAG_LOCKED, &nfiles, 0, ""); SYSCTL_COMPAT_INT(_kern, OID_AUTO, num_vnodes, CTLFLAG_RD | CTLFLAG_LOCKED, &numvnodes, 0, ""); SYSCTL_INT(_kern, OID_AUTO, num_tasks, CTLFLAG_RD | CTLFLAG_LOCKED, &task_max, 0, ""); SYSCTL_INT(_kern, OID_AUTO, num_threads, CTLFLAG_RD | CTLFLAG_LOCKED, &thread_max, 0, ""); SYSCTL_INT(_kern, OID_AUTO, num_taskthreads, CTLFLAG_RD | CTLFLAG_LOCKED, &task_threadmax, 0, ""); SYSCTL_LONG(_kern, OID_AUTO, num_recycledvnodes, CTLFLAG_RD | CTLFLAG_LOCKED, &num_recycledvnodes, ""); SYSCTL_COMPAT_INT(_kern, OID_AUTO, free_vnodes, CTLFLAG_RD | CTLFLAG_LOCKED, &freevnodes, 0, ""); STATIC int sysctl_maxvnodes(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int oldval = desiredvnodes; int error = sysctl_io_number(req, desiredvnodes, sizeof(int), &desiredvnodes, NULL); if (oldval != desiredvnodes) { resize_namecache(desiredvnodes); } return error; } SYSCTL_INT(_kern, OID_AUTO, namecache_disabled, CTLFLAG_RW | CTLFLAG_LOCKED, &nc_disabled, 0, ""); SYSCTL_PROC(_kern, KERN_MAXVNODES, maxvnodes, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_maxvnodes, "I", ""); SYSCTL_PROC(_kern, KERN_MAXPROC, maxproc, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_maxproc, "I", ""); SYSCTL_PROC(_kern, KERN_AIOMAX, aiomax, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_aiomax, "I", ""); SYSCTL_PROC(_kern, KERN_AIOPROCMAX, aioprocmax, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_aioprocmax, "I", ""); SYSCTL_PROC(_kern, KERN_AIOTHREADS, aiothreads, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_aiothreads, "I", ""); SYSCTL_PROC(_kern, OID_AUTO, sched_enable_smt, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_KERN, 0, 0, sysctl_sched_enable_smt, "I", ""); extern int sched_allow_NO_SMT_threads; SYSCTL_INT(_kern, OID_AUTO, sched_allow_NO_SMT_threads, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_allow_NO_SMT_threads, 0, ""); extern int sched_avoid_cpu0; SYSCTL_INT(_kern, OID_AUTO, sched_rt_avoid_cpu0, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_avoid_cpu0, 0, "If 1, choose cpu0 after all other primaries; if 2, choose cpu0 and cpu1 last, after all other cpus including secondaries"); #if (DEVELOPMENT || DEBUG) static int sysctl_kern_max_unsafe_rt_quanta(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { extern void sched_set_max_unsafe_rt_quanta(int); extern int max_unsafe_rt_quanta; int new_value, changed; int old_value = max_unsafe_rt_quanta; int error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if (changed) { sched_set_max_unsafe_rt_quanta(new_value); } return error; } SYSCTL_PROC(_kern, OID_AUTO, max_unsafe_rt_quanta, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_kern_max_unsafe_rt_quanta, "I", "Number of quanta to allow a realtime " "thread to run before being penalized"); static int sysctl_kern_max_unsafe_fixed_quanta(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { extern void sched_set_max_unsafe_fixed_quanta(int); extern int max_unsafe_fixed_quanta; int new_value, changed; int old_value = max_unsafe_fixed_quanta; int error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if (changed) { sched_set_max_unsafe_fixed_quanta(new_value); } return error; } SYSCTL_PROC(_kern, OID_AUTO, max_unsafe_fixed_quanta, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_kern_max_unsafe_fixed_quanta, "I", "Number of quanta to allow a fixed sched mode " "thread to run before being penalized"); static int sysctl_kern_quantum_us(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { const uint64_t quantum_us = sched_get_quantum_us(); return sysctl_io_number(req, quantum_us, sizeof(quantum_us), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, quantum_us, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_kern_quantum_us, "Q", "Length of scheduling quantum in microseconds"); extern int smt_sched_bonus_16ths; SYSCTL_INT(_kern, OID_AUTO, smt_sched_bonus_16ths, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &smt_sched_bonus_16ths, 0, ""); extern int smt_timeshare_enabled; SYSCTL_INT(_kern, OID_AUTO, sched_smt_timeshare_enable, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &smt_timeshare_enabled, 0, ""); extern int sched_smt_balance; SYSCTL_INT(_kern, OID_AUTO, sched_smt_balance, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_smt_balance, 0, ""); extern int sched_allow_rt_smt; SYSCTL_INT(_kern, OID_AUTO, sched_allow_rt_smt, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_allow_rt_smt, 0, ""); extern int sched_backup_cpu_timeout_count; SYSCTL_INT(_kern, OID_AUTO, sched_backup_cpu_timeout_count, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_backup_cpu_timeout_count, 0, "The maximum number of 10us delays before allowing a backup cpu to select a thread"); #if __arm64__ /* Scheduler perfcontrol callouts sysctls */ SYSCTL_DECL(_kern_perfcontrol_callout); SYSCTL_NODE(_kern, OID_AUTO, perfcontrol_callout, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "scheduler perfcontrol callouts"); extern int perfcontrol_callout_stats_enabled; SYSCTL_INT(_kern_perfcontrol_callout, OID_AUTO, stats_enabled, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &perfcontrol_callout_stats_enabled, 0, ""); extern uint64_t perfcontrol_callout_stat_avg(perfcontrol_callout_type_t type, perfcontrol_callout_stat_t stat); /* On-Core Callout */ STATIC int sysctl_perfcontrol_callout_stat (__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { perfcontrol_callout_stat_t stat = (perfcontrol_callout_stat_t)arg1; perfcontrol_callout_type_t type = (perfcontrol_callout_type_t)arg2; return sysctl_io_number(req, (int)perfcontrol_callout_stat_avg(type, stat), sizeof(int), NULL, NULL); } SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, oncore_instr, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_ON_CORE, sysctl_perfcontrol_callout_stat, "I", ""); SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, oncore_cycles, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_ON_CORE, sysctl_perfcontrol_callout_stat, "I", ""); SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, offcore_instr, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_OFF_CORE, sysctl_perfcontrol_callout_stat, "I", ""); SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, offcore_cycles, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_OFF_CORE, sysctl_perfcontrol_callout_stat, "I", ""); SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, context_instr, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_CONTEXT, sysctl_perfcontrol_callout_stat, "I", ""); SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, context_cycles, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_CONTEXT, sysctl_perfcontrol_callout_stat, "I", ""); SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, update_instr, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_INSTRS, PERFCONTROL_CALLOUT_STATE_UPDATE, sysctl_perfcontrol_callout_stat, "I", ""); SYSCTL_PROC(_kern_perfcontrol_callout, OID_AUTO, update_cycles, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, (void *)PERFCONTROL_STAT_CYCLES, PERFCONTROL_CALLOUT_STATE_UPDATE, sysctl_perfcontrol_callout_stat, "I", ""); #if __AMP__ #if !CONFIG_CLUTCH extern int sched_amp_idle_steal; SYSCTL_INT(_kern, OID_AUTO, sched_amp_idle_steal, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_amp_idle_steal, 0, ""); extern int sched_amp_spill_steal; SYSCTL_INT(_kern, OID_AUTO, sched_amp_spill_steal, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_amp_spill_steal, 0, ""); extern int sched_amp_spill_count; SYSCTL_INT(_kern, OID_AUTO, sched_amp_spill_count, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_amp_spill_count, 0, ""); #endif /* !CONFIG_CLUTCH */ extern int sched_amp_spill_deferred_ipi; SYSCTL_INT(_kern, OID_AUTO, sched_amp_spill_deferred_ipi, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_amp_spill_deferred_ipi, 0, ""); extern int sched_amp_pcores_preempt_immediate_ipi; SYSCTL_INT(_kern, OID_AUTO, sched_amp_pcores_preempt_immediate_ipi, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_amp_pcores_preempt_immediate_ipi, 0, ""); #endif /* __AMP__ */ #endif /* __arm64__ */ #if __arm64__ extern int legacy_footprint_entitlement_mode; SYSCTL_INT(_kern, OID_AUTO, legacy_footprint_entitlement_mode, CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, &legacy_footprint_entitlement_mode, 0, ""); #endif /* __arm64__ */ /* * Realtime threads are ordered by highest priority first then, * for threads of the same priority, by earliest deadline first. * But if sched_rt_runq_strict_priority is false (the default), * a lower priority thread with an earlier deadline will be preferred * over a higher priority thread with a later deadline, as long as * both threads' computations will fit before the later deadline. */ extern int sched_rt_runq_strict_priority; SYSCTL_INT(_kern, OID_AUTO, sched_rt_runq_strict_priority, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_rt_runq_strict_priority, 0, ""); static int sysctl_kern_sched_rt_n_backup_processors(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int old_value = sched_get_rt_n_backup_processors(); int error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if (changed) { sched_set_rt_n_backup_processors(new_value); } return error; } SYSCTL_PROC(_kern, OID_AUTO, sched_rt_n_backup_processors, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_kern_sched_rt_n_backup_processors, "I", ""); static int sysctl_kern_sched_rt_deadline_epsilon_us(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int old_value = sched_get_rt_deadline_epsilon(); int error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if (changed) { sched_set_rt_deadline_epsilon(new_value); } return error; } SYSCTL_PROC(_kern, OID_AUTO, sched_rt_deadline_epsilon_us, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_kern_sched_rt_deadline_epsilon_us, "I", ""); extern int sched_idle_delay_cpuid; SYSCTL_INT(_kern, OID_AUTO, sched_idle_delay_cpuid, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &sched_idle_delay_cpuid, 0, "This cpuid will be delayed by 500us on exiting idle, to simulate interrupt or preemption delays when testing the scheduler"); static int sysctl_kern_sched_powered_cores(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int old_value = sched_get_powered_cores(); int error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if (changed) { if (!PE_parse_boot_argn("enable_skstb", NULL, 0)) { return ENOTSUP; } sched_set_powered_cores(new_value); } return error; } SYSCTL_PROC(_kern, OID_AUTO, sched_powered_cores, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_kern_sched_powered_cores, "I", ""); #if __arm64__ static int sysctl_kern_update_sched_recommended_cores(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { uint64_t new_value; int changed; uint64_t old_value = sched_sysctl_get_recommended_cores(); int error = sysctl_io_number(req, old_value, sizeof(uint64_t), &new_value, &changed); if (changed) { if (!PE_parse_boot_argn("enable_skstb", NULL, 0)) { return ENOTSUP; } sched_perfcontrol_update_recommended_cores_reason(new_value, REASON_CLPC_USER, 0); } return error; } SYSCTL_PROC(_kern, OID_AUTO, sched_update_recommended_cores, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_kern_update_sched_recommended_cores, "I", ""); #endif /* __arm64__ */ #endif /* (DEVELOPMENT || DEBUG) */ extern uint64_t sysctl_sched_recommended_cores; SYSCTL_QUAD(_kern, OID_AUTO, sched_recommended_cores, CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, &sysctl_sched_recommended_cores, ""); static int sysctl_kern_suspend_cluster_powerdown(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int old_value = get_cluster_powerdown_user_suspended(); int error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if (!error && changed) { if (new_value > 0) { error = suspend_cluster_powerdown_from_user(); } else { error = resume_cluster_powerdown_from_user(); } if (error) { error = EALREADY; } } return error; } SYSCTL_PROC(_kern, OID_AUTO, suspend_cluster_powerdown, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_kern_suspend_cluster_powerdown, "I", ""); STATIC int sysctl_securelvl (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, securelevel, sizeof(int), &new_value, &changed); if (changed) { if (!(new_value < securelevel && proc_getpid(req->p) != 1)) { proc_list_lock(); securelevel = new_value; proc_list_unlock(); } else { error = EPERM; } } return error; } SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_securelvl, "I", ""); STATIC int sysctl_domainname (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error, changed; char tmpname[MAXHOSTNAMELEN] = {}; lck_mtx_lock(&domainname_lock); strlcpy(tmpname, domainname, sizeof(tmpname)); lck_mtx_unlock(&domainname_lock); error = sysctl_io_string(req, tmpname, sizeof(tmpname), 0, &changed); if (!error && changed) { lck_mtx_lock(&domainname_lock); strlcpy(domainname, tmpname, sizeof(domainname)); lck_mtx_unlock(&domainname_lock); } return error; } SYSCTL_PROC(_kern, KERN_DOMAINNAME, nisdomainname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_domainname, "A", ""); SYSCTL_COMPAT_INT(_kern, KERN_HOSTID, hostid, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &hostid, 0, ""); STATIC int sysctl_hostname (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error, changed; char tmpname[MAXHOSTNAMELEN] = {}; const char * name; #if XNU_TARGET_OS_OSX name = hostname; #else /* XNU_TARGET_OS_OSX */ #define ENTITLEMENT_USER_ASSIGNED_DEVICE_NAME \ "com.apple.developer.device-information.user-assigned-device-name" if (csproc_get_platform_binary(current_proc()) || IOCurrentTaskHasEntitlement(ENTITLEMENT_USER_ASSIGNED_DEVICE_NAME)) { name = hostname; } else { /* Deny writes if we don't pass entitlement check */ if (req->newptr) { return EPERM; } name = "localhost"; } #endif /* ! XNU_TARGET_OS_OSX */ lck_mtx_lock(&hostname_lock); strlcpy(tmpname, name, sizeof(tmpname)); lck_mtx_unlock(&hostname_lock); error = sysctl_io_string(req, tmpname, sizeof(tmpname), 1, &changed); if (!error && changed) { lck_mtx_lock(&hostname_lock); strlcpy(hostname, tmpname, sizeof(hostname)); lck_mtx_unlock(&hostname_lock); } return error; } SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_hostname, "A", ""); STATIC int sysctl_procname (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { /* Original code allowed writing, I'm copying this, although this all makes * no sense to me. Besides, this sysctl is never used. */ return sysctl_io_string(req, &req->p->p_name[0], (2 * MAXCOMLEN + 1), 1, NULL); } SYSCTL_PROC(_kern, KERN_PROCNAME, procname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, sysctl_procname, "A", ""); SYSCTL_INT(_kern, KERN_SPECULATIVE_READS, speculative_reads_disabled, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &speculative_reads_disabled, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, preheat_max_bytes, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &preheat_max_bytes, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, preheat_min_bytes, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &preheat_min_bytes, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, speculative_prefetch_max, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &speculative_prefetch_max, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, speculative_prefetch_max_iosize, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &speculative_prefetch_max_iosize, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, vm_page_free_target, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_page_free_target, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, vm_page_free_min, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_page_free_min, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, vm_page_free_reserved, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_page_free_reserved, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, vm_page_speculative_percentage, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_speculative_percentage, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, vm_page_speculative_q_age_ms, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_speculative_q_age_ms, 0, ""); #if (DEVELOPMENT || DEBUG) SYSCTL_UINT(_kern, OID_AUTO, vm_page_max_speculative_age_q, CTLFLAG_RD, &vm_page_max_speculative_age_q, 0, ""); #endif /* (DEVELOPMENT || DEBUG) */ SYSCTL_UINT(_kern, OID_AUTO, vm_max_delayed_work_limit, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_max_delayed_work_limit, 0, ""); SYSCTL_UINT(_kern, OID_AUTO, vm_max_batch, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_max_batch, 0, ""); SYSCTL_STRING(_kern, OID_AUTO, bootsessionuuid, CTLFLAG_RD | CTLFLAG_LOCKED, &bootsessionuuid_string, sizeof(bootsessionuuid_string), ""); STATIC int sysctl_boottime (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { struct timeval tv; boottime_timeval(&tv); struct proc *p = req->p; if (proc_is64bit(p)) { struct user64_timeval t = {}; t.tv_sec = tv.tv_sec; t.tv_usec = tv.tv_usec; return sysctl_io_opaque(req, &t, sizeof(t), NULL); } else { struct user32_timeval t = {}; t.tv_sec = (user32_time_t)tv.tv_sec; t.tv_usec = tv.tv_usec; return sysctl_io_opaque(req, &t, sizeof(t), NULL); } } SYSCTL_PROC(_kern, KERN_BOOTTIME, boottime, CTLTYPE_STRUCT | CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_boottime, "S,timeval", ""); extern bool IOGetBootUUID(char *); /* non-static: written by imageboot.c */ uuid_string_t fake_bootuuid; STATIC int sysctl_bootuuid (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error = ENOENT; /* check the first byte to see if the string has been * populated. this is a uuid_STRING_t, this check would * not work with a uuid_t. */ if (fake_bootuuid[0] != '\0') { error = sysctl_io_string(req, fake_bootuuid, 0, 0, NULL); goto out; } uuid_string_t uuid_string; if (IOGetBootUUID(uuid_string)) { uuid_t boot_uuid; error = uuid_parse(uuid_string, boot_uuid); if (!error) { error = sysctl_io_string(req, __DECONST(char *, uuid_string), 0, 0, NULL); } } out: return error; } SYSCTL_PROC(_kern, OID_AUTO, bootuuid, CTLTYPE_STRING | CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_bootuuid, "A", ""); extern bool IOGetApfsPrebootUUID(char *); extern bool IOGetAssociatedApfsVolgroupUUID(char *); STATIC int sysctl_apfsprebootuuid (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error = ENOENT; uuid_string_t uuid_string; if (IOGetApfsPrebootUUID(uuid_string)) { uuid_t apfs_preboot_uuid; error = uuid_parse(uuid_string, apfs_preboot_uuid); if (!error) { error = sysctl_io_string(req, __DECONST(char *, uuid_string), 0, 0, NULL); } } return error; } SYSCTL_PROC(_kern, OID_AUTO, apfsprebootuuid, CTLTYPE_STRING | CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_apfsprebootuuid, "A", ""); STATIC int sysctl_targetsystemvolgroupuuid (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error = ENOENT; uuid_string_t uuid_string; if (IOGetApfsPrebootUUID(uuid_string)) { uuid_t apfs_preboot_uuid; error = uuid_parse(uuid_string, apfs_preboot_uuid); if (!error) { error = sysctl_io_string(req, __DECONST(char *, uuid_string), 0, 0, NULL); } } else { /* * In special boot modes, such as kcgen-mode, the * apfs-preboot-uuid property will not be set. Instead, a * different property, associated-volume-group, will be set * which indicates the UUID of the VolumeGroup containing the * system volume into which you will boot. */ if (IOGetAssociatedApfsVolgroupUUID(uuid_string)) { uuid_t apfs_preboot_uuid; error = uuid_parse(uuid_string, apfs_preboot_uuid); if (!error) { error = sysctl_io_string(req, __DECONST(char *, uuid_string), 0, 0, NULL); } } } return error; } SYSCTL_PROC(_kern, OID_AUTO, targetsystemvolgroupuuid, CTLTYPE_STRING | CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, 0, sysctl_targetsystemvolgroupuuid, "A", ""); extern bool IOGetBootManifestHash(char *, size_t *); extern bool IOGetBootObjectsPath(char *); STATIC int sysctl_bootobjectspath (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error = ENOENT; #if defined(__x86_64__) /* auth-root-dmg is used for the Intel BaseSystem in some flows, * e.g. createinstallmedia and as part of upgrading from 10.15 or earlier * under these scenarios, set_fake_bootuuid will be called when pivoting to * the new root filesystem. need honor the fake bootuuid. */ if (fake_bootuuid[0] != '\0') { error = sysctl_io_string(req, fake_bootuuid, 0, 0, NULL); } else { /* for intel mac, boot objects reside in [preboot volume]/[bootuuid] * bootuuid and apfsprebootuuid are populated by efiboot and they are alias. */ uuid_string_t uuid_string; if (IOGetBootUUID(uuid_string)) { uuid_t boot_uuid; error = uuid_parse(uuid_string, boot_uuid); if (!error) { error = sysctl_io_string(req, (char *)uuid_string, 0, 0, NULL); } } } #else char boot_obj_path[MAXPATHLEN] = { "\0" }; static const char kAsciiHexChars[] = "0123456789ABCDEF"; unsigned int i, j; /* Hashed with SHA2-384 or SHA1, boot manifest hash is 48 bytes or 20 bytes * hence, need a 97 bytes char array for the string. */ size_t hash_data_size = CCSHA384_OUTPUT_SIZE; char hash_data[CCSHA384_OUTPUT_SIZE] = { "\0" }; char boot_manifest_hash[CCSHA384_OUTPUT_SIZE * 2 + 1] = { "\0" };; /* for Apple Silicon Macs, there is a boot-objects-path under IODeviceTree:/chosen * and boot objects reside in [preboot volume]/[boot-objects-path] * for embedded platforms, there would be a boot-manifest-hash under IODeviceTree:/chosen * and boot objects reside in [preboot volume]/[boot-manifest-hash] */ if (IOGetBootObjectsPath(boot_obj_path)) { error = sysctl_io_string(req, (char *)boot_obj_path, 0, 0, NULL); } else if (IOGetBootManifestHash(hash_data, &hash_data_size)) { j = 0; for (i = 0; i < hash_data_size; ++i) { char octet = hash_data[i]; boot_manifest_hash[j++] = kAsciiHexChars[((octet & 0xF0) >> 4)]; boot_manifest_hash[j++] = kAsciiHexChars[(octet & 0x0F)]; } /* make sure string has null termination */ boot_manifest_hash[j] = '\0'; error = sysctl_io_string(req, (char *)boot_manifest_hash, 0, 0, NULL); } #endif return error; } SYSCTL_PROC(_kern, OID_AUTO, bootobjectspath, CTLTYPE_STRING | CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_bootobjectspath, "A", ""); STATIC int sysctl_symfile (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { char *str; int error = get_kernel_symfile(req->p, &str); if (error) { return error; } return sysctl_io_string(req, str, 0, 0, NULL); } SYSCTL_PROC(_kern, KERN_SYMFILE, symfile, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_symfile, "A", ""); #if CONFIG_NETBOOT STATIC int sysctl_netboot (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_io_number(req, netboot_root(), sizeof(int), NULL, NULL); } SYSCTL_PROC(_kern, KERN_NETBOOT, netboot, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_netboot, "I", ""); #endif #ifdef CONFIG_IMGSRC_ACCESS /* * Legacy--act as if only one layer of nesting is possible. */ STATIC int sysctl_imgsrcdev (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { vfs_context_t ctx = vfs_context_current(); vnode_t devvp; int result; if (!vfs_context_issuser(ctx)) { return EPERM; } if (imgsrc_rootvnodes[0] == NULL) { return ENOENT; } result = vnode_getwithref(imgsrc_rootvnodes[0]); if (result != 0) { return result; } devvp = vnode_mount(imgsrc_rootvnodes[0])->mnt_devvp; result = vnode_getwithref(devvp); if (result != 0) { goto out; } result = sysctl_io_number(req, vnode_specrdev(devvp), sizeof(dev_t), NULL, NULL); vnode_put(devvp); out: vnode_put(imgsrc_rootvnodes[0]); return result; } SYSCTL_PROC(_kern, OID_AUTO, imgsrcdev, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_imgsrcdev, "I", ""); STATIC int sysctl_imgsrcinfo (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error; struct imgsrc_info info[MAX_IMAGEBOOT_NESTING] = {}; /* 2 for now, no problem */ uint32_t i; vnode_t rvp, devvp; if (imgsrc_rootvnodes[0] == NULLVP) { return ENXIO; } for (i = 0; i < MAX_IMAGEBOOT_NESTING; i++) { /* * Go get the root vnode. */ rvp = imgsrc_rootvnodes[i]; if (rvp == NULLVP) { break; } error = vnode_get(rvp); if (error != 0) { return error; } /* * For now, no getting at a non-local volume. */ devvp = vnode_mount(rvp)->mnt_devvp; if (devvp == NULL) { vnode_put(rvp); return EINVAL; } error = vnode_getwithref(devvp); if (error != 0) { vnode_put(rvp); return error; } /* * Fill in info. */ info[i].ii_dev = vnode_specrdev(devvp); info[i].ii_flags = 0; info[i].ii_height = i; bzero(info[i].ii_reserved, sizeof(info[i].ii_reserved)); vnode_put(devvp); vnode_put(rvp); } return sysctl_io_opaque(req, info, i * sizeof(info[0]), NULL); } SYSCTL_PROC(_kern, OID_AUTO, imgsrcinfo, CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_imgsrcinfo, "I", ""); #endif /* CONFIG_IMGSRC_ACCESS */ SYSCTL_DECL(_kern_timer); SYSCTL_NODE(_kern, OID_AUTO, timer, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "timer"); SYSCTL_INT(_kern_timer, OID_AUTO, coalescing_enabled, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &mach_timer_coalescing_enabled, 0, ""); SYSCTL_QUAD(_kern_timer, OID_AUTO, deadline_tracking_bin_1, CTLFLAG_RW | CTLFLAG_LOCKED, &timer_deadline_tracking_bin_1, ""); SYSCTL_QUAD(_kern_timer, OID_AUTO, deadline_tracking_bin_2, CTLFLAG_RW | CTLFLAG_LOCKED, &timer_deadline_tracking_bin_2, ""); SYSCTL_DECL(_kern_timer_longterm); SYSCTL_NODE(_kern_timer, OID_AUTO, longterm, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "longterm"); /* Must match definition in osfmk/kern/timer_call.c */ enum { THRESHOLD, QCOUNT, ENQUEUES, DEQUEUES, ESCALATES, SCANS, PREEMPTS, LATENCY, LATENCY_MIN, LATENCY_MAX, LONG_TERM_SCAN_LIMIT, LONG_TERM_SCAN_INTERVAL, LONG_TERM_SCAN_PAUSES, SCAN_LIMIT, SCAN_INTERVAL, SCAN_PAUSES, SCAN_POSTPONES, }; extern uint64_t timer_sysctl_get(int); extern kern_return_t timer_sysctl_set(int, uint64_t); STATIC int sysctl_timer (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int oid = (int)arg1; uint64_t value = timer_sysctl_get(oid); uint64_t new_value; int error; int changed; error = sysctl_io_number(req, value, sizeof(value), &new_value, &changed); if (changed) { kern_return_t kr = timer_sysctl_set(oid, new_value); error = mach_to_bsd_errno(kr); } return error; } SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, threshold, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, (void *) THRESHOLD, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scan_limit, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, (void *) LONG_TERM_SCAN_LIMIT, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scan_interval, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, (void *) LONG_TERM_SCAN_INTERVAL, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, qlen, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) QCOUNT, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scan_pauses, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) LONG_TERM_SCAN_PAUSES, 0, sysctl_timer, "Q", ""); #if DEBUG SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, enqueues, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) ENQUEUES, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, dequeues, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) DEQUEUES, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, escalates, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) ESCALATES, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, scans, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) SCANS, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, preempts, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) PREEMPTS, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, latency, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) LATENCY, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, latency_min, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) LATENCY_MIN, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer_longterm, OID_AUTO, latency_max, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) LATENCY_MAX, 0, sysctl_timer, "Q", ""); #endif /* DEBUG */ SYSCTL_PROC(_kern_timer, OID_AUTO, scan_limit, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, (void *) SCAN_LIMIT, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer, OID_AUTO, scan_interval, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, (void *) SCAN_INTERVAL, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer, OID_AUTO, scan_pauses, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) SCAN_PAUSES, 0, sysctl_timer, "Q", ""); SYSCTL_PROC(_kern_timer, OID_AUTO, scan_postpones, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, (void *) SCAN_POSTPONES, 0, sysctl_timer, "Q", ""); STATIC int sysctl_usrstack (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_io_number(req, (int)req->p->user_stack, sizeof(int), NULL, NULL); } SYSCTL_PROC(_kern, KERN_USRSTACK32, usrstack, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_usrstack, "I", ""); STATIC int sysctl_usrstack64 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_io_number(req, req->p->user_stack, sizeof(req->p->user_stack), NULL, NULL); } SYSCTL_PROC(_kern, KERN_USRSTACK64, usrstack64, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_usrstack64, "Q", ""); #if EXCLAVES_COREDUMP /* secure kernel coredump support. */ extern unsigned int sc_dump_mode; SYSCTL_UINT(_kern, OID_AUTO, secure_coredump, CTLFLAG_RD, &sc_dump_mode, 0, "secure_coredump"); #endif /* EXCLAVES_COREDUMP */ #if CONFIG_COREDUMP || CONFIG_UCOREDUMP SYSCTL_STRING(_kern, KERN_COREFILE, corefile, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, corefilename, sizeof(corefilename), ""); SYSCTL_STRING(_kern, OID_AUTO, drivercorefile, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, drivercorefilename, sizeof(drivercorefilename), ""); STATIC int sysctl_coredump (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { #ifdef SECURE_KERNEL (void)req; return ENOTSUP; #else int new_value, changed; int error = sysctl_io_number(req, do_coredump, sizeof(int), &new_value, &changed); if (changed) { if ((new_value == 0) || (new_value == 1)) { do_coredump = new_value; } else { error = EINVAL; } } return error; #endif } SYSCTL_PROC(_kern, KERN_COREDUMP, coredump, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_coredump, "I", ""); STATIC int sysctl_suid_coredump (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { #ifdef SECURE_KERNEL (void)req; return ENOTSUP; #else int new_value, changed; int error = sysctl_io_number(req, sugid_coredump, sizeof(int), &new_value, &changed); if (changed) { if ((new_value == 0) || (new_value == 1)) { sugid_coredump = new_value; } else { error = EINVAL; } } return error; #endif } SYSCTL_PROC(_kern, KERN_SUGID_COREDUMP, sugid_coredump, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_suid_coredump, "I", ""); #if CONFIG_UCOREDUMP STATIC int sysctl_ucoredump (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { #ifdef SECURE_KERNEL (void)req; return ENOTSUP; #else int new_value, changed; int error = sysctl_io_number(req, do_ucoredump, sizeof(int), &new_value, &changed); if (changed) { if (new_value == 0 || new_value == 1) { do_ucoredump = new_value; } else { error = EINVAL; } } return error; #endif } SYSCTL_PROC(_kern, OID_AUTO, ucoredump, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_ucoredump, "I", ""); #endif /* CONFIG_UCOREDUMP */ #endif /* CONFIG_COREDUMP || CONFIG_UCOREDUMP */ #if CONFIG_KDP_INTERACTIVE_DEBUGGING extern const char* kdp_corefile_path; STATIC int sysctl_kdp_corefile(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return SYSCTL_OUT(req, kdp_corefile_path, strlen(kdp_corefile_path) + 1); } /* this needs to be a proc rather than a string since kdp_corefile_path is not a compile-time constant */ SYSCTL_PROC(_kern, OID_AUTO, kdp_corefile, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_kdp_corefile, "A", ""); #endif /* CONFIG_KDP_INTERACTIVE_DEBUGGING */ STATIC int sysctl_delayterm (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { struct proc *p = req->p; int new_value, changed; int error = sysctl_io_number(req, (req->p->p_lflag & P_LDELAYTERM)? 1: 0, sizeof(int), &new_value, &changed); if (changed) { proc_lock(p); if (new_value) { req->p->p_lflag |= P_LDELAYTERM; } else { req->p->p_lflag &= ~P_LDELAYTERM; } proc_unlock(p); } return error; } SYSCTL_PROC(_kern, KERN_PROCDELAYTERM, delayterm, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_delayterm, "I", ""); STATIC int sysctl_rage_vnode (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { struct proc *p = req->p; struct uthread *ut; int new_value, old_value, changed; int error; ut = current_uthread(); if (ut->uu_flag & UT_RAGE_VNODES) { old_value = KERN_RAGE_THREAD; } else if (p->p_lflag & P_LRAGE_VNODES) { old_value = KERN_RAGE_PROC; } else { old_value = 0; } error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if ((error == 0) && (changed != 0)) { switch (new_value) { case KERN_RAGE_PROC: proc_lock(p); p->p_lflag |= P_LRAGE_VNODES; proc_unlock(p); break; case KERN_UNRAGE_PROC: proc_lock(p); p->p_lflag &= ~P_LRAGE_VNODES; proc_unlock(p); break; case KERN_RAGE_THREAD: ut->uu_flag |= UT_RAGE_VNODES; break; case KERN_UNRAGE_THREAD: ut = current_uthread(); ut->uu_flag &= ~UT_RAGE_VNODES; break; } } return error; } SYSCTL_PROC(_kern, KERN_RAGEVNODE, rage_vnode, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, sysctl_rage_vnode, "I", ""); /* XXX until filecoordinationd fixes a bit of inverted logic. */ STATIC int sysctl_vfsnspace (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int old_value = 0, new_value, changed; return sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); } SYSCTL_PROC(_kern, OID_AUTO, vfsnspace, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, sysctl_vfsnspace, "I", ""); /* XXX move this interface into libproc and remove this sysctl */ STATIC int sysctl_setthread_cpupercent (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, old_value; int error = 0; kern_return_t kret = KERN_SUCCESS; uint8_t percent = 0; int ms_refill = 0; if (!req->newptr) { return 0; } old_value = 0; if ((error = sysctl_io_number(req, old_value, sizeof(old_value), &new_value, NULL)) != 0) { return error; } percent = new_value & 0xff; /* low 8 bytes for perent */ ms_refill = (new_value >> 8) & 0xffffff; /* upper 24bytes represent ms refill value */ if (percent > 100) { return EINVAL; } /* * If the caller is specifying a percentage of 0, this will unset the CPU limit, if present. */ kret = percent == 0 ? thread_set_cpulimit(THREAD_CPULIMIT_DISABLE, 0, 0) : thread_set_cpulimit(THREAD_CPULIMIT_BLOCK, percent, ms_refill * (int)NSEC_PER_MSEC); if (kret != 0) { return EIO; } return 0; } SYSCTL_PROC(_kern, OID_AUTO, setthread_cpupercent, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_ANYBODY, 0, 0, sysctl_setthread_cpupercent, "I", "set thread cpu percentage limit"); STATIC int sysctl_kern_check_openevt (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { struct proc *p = req->p; int new_value, old_value, changed; int error; if (p->p_flag & P_CHECKOPENEVT) { old_value = KERN_OPENEVT_PROC; } else { old_value = 0; } error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if ((error == 0) && (changed != 0)) { switch (new_value) { case KERN_OPENEVT_PROC: OSBitOrAtomic(P_CHECKOPENEVT, &p->p_flag); break; case KERN_UNOPENEVT_PROC: OSBitAndAtomic(~((uint32_t)P_CHECKOPENEVT), &p->p_flag); break; default: error = EINVAL; } } return error; } SYSCTL_PROC(_kern, KERN_CHECKOPENEVT, check_openevt, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, sysctl_kern_check_openevt, "I", "set the per-process check-open-evt flag"); #if DEVELOPMENT || DEBUG STATIC int sysctl_nx (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { #ifdef SECURE_KERNEL (void)req; return ENOTSUP; #else int new_value, changed; int error; error = sysctl_io_number(req, nx_enabled, sizeof(nx_enabled), &new_value, &changed); if (error) { return error; } if (changed) { #if defined(__x86_64__) /* * Only allow setting if NX is supported on the chip */ if (!(cpuid_extfeatures() & CPUID_EXTFEATURE_XD)) { return ENOTSUP; } #endif nx_enabled = new_value; } return error; #endif /* SECURE_KERNEL */ } #endif #if DEVELOPMENT || DEBUG SYSCTL_PROC(_kern, KERN_NX_PROTECTION, nx, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_nx, "I", ""); #endif STATIC int sysctl_loadavg (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { if (proc_is64bit(req->p)) { struct user64_loadavg loadinfo64 = {}; fill_loadavg64(&averunnable, &loadinfo64); return sysctl_io_opaque(req, &loadinfo64, sizeof(loadinfo64), NULL); } else { struct user32_loadavg loadinfo32 = {}; fill_loadavg32(&averunnable, &loadinfo32); return sysctl_io_opaque(req, &loadinfo32, sizeof(loadinfo32), NULL); } } SYSCTL_PROC(_vm, VM_LOADAVG, loadavg, CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_loadavg, "S,loadavg", ""); /* * Note: Thread safe; vm_map_ilk_lock protects in vm_toggle_entry_reuse() */ STATIC int sysctl_vm_toggle_address_reuse(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int old_value = 0, new_value = 0, error = 0; if (vm_toggle_entry_reuse( VM_TOGGLE_GETVALUE, &old_value )) { return error; } error = sysctl_io_number(req, old_value, sizeof(int), &new_value, NULL); if (!error) { return vm_toggle_entry_reuse(new_value, NULL); } return error; } SYSCTL_PROC(_debug, OID_AUTO, toggle_address_reuse, CTLFLAG_ANYBODY | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_vm_toggle_address_reuse, "I", ""); #ifdef CONFIG_XNUPOST extern uint32_t xnupost_get_estimated_testdata_size(void); extern int xnupost_reset_all_tests(void); STATIC int sysctl_handle_xnupost_get_tests SYSCTL_HANDLER_ARGS { /* fixup unused arguments warnings */ __unused int _oa2 = arg2; __unused void * _oa1 = arg1; __unused struct sysctl_oid * _oidp = oidp; int error = 0; user_addr_t oldp = 0; user_addr_t newp = 0; uint32_t usedbytes = 0; oldp = req->oldptr; newp = req->newptr; if (newp) { return ENOTSUP; } if ((void *)oldp == NULL) { /* return estimated size for second call where info can be placed */ req->oldidx = xnupost_get_estimated_testdata_size(); } else { error = xnupost_export_testdata((void *)oldp, req->oldlen, &usedbytes); req->oldidx = usedbytes; } return error; } SYSCTL_PROC(_debug, OID_AUTO, xnupost_get_tests, CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_handle_xnupost_get_tests, "-", "read xnupost test data in kernel"); #if CONFIG_EXT_PANICLOG /* * Extensible panic log test hooks */ static int sysctl_debug_ext_paniclog_test_hook SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int rval = 0; uint32_t test_option = 0; rval = sysctl_handle_int(oidp, &test_option, 0, req); if (rval == 0 && req->newptr) { rval = ext_paniclog_test_hook(test_option); } return rval; } SYSCTL_PROC(_debug, OID_AUTO, ext_paniclog_test_hook, CTLTYPE_INT | CTLFLAG_RW, 0, 0, sysctl_debug_ext_paniclog_test_hook, "A", "ext paniclog test hook"); #endif STATIC int sysctl_debug_xnupost_ctl SYSCTL_HANDLER_ARGS { /* fixup unused arguments warnings */ __unused int _oa2 = arg2; __unused void * _oa1 = arg1; __unused struct sysctl_oid * _oidp = oidp; #define ARRCOUNT 4 /* * INPUT: ACTION, PARAM1, PARAM2, PARAM3 * OUTPUT: RESULTCODE, ADDITIONAL DATA */ int32_t outval[ARRCOUNT] = {0}; int32_t input[ARRCOUNT] = {0}; int32_t out_size = sizeof(outval); int32_t in_size = sizeof(input); int error = 0; /* if this is NULL call to find out size, send out size info */ if (!req->newptr) { goto out; } /* pull in provided value from userspace */ error = SYSCTL_IN(req, &input[0], in_size); if (error) { return error; } if (input[0] == XTCTL_RESET_TESTDATA) { outval[0] = xnupost_reset_all_tests(); goto out; } out: error = SYSCTL_OUT(req, &outval[0], out_size); return error; } SYSCTL_PROC(_debug, OID_AUTO, xnupost_testctl, CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_debug_xnupost_ctl, "I", "xnupost control for kernel testing"); extern void test_oslog_handleOSLogCtl(int32_t * in, int32_t * out, int32_t arraycount); STATIC int sysctl_debug_test_oslog_ctl(__unused struct sysctl_oid * oidp, __unused void * arg1, __unused int arg2, struct sysctl_req * req) { #define ARRCOUNT 4 int32_t outval[ARRCOUNT] = {0}; int32_t input[ARRCOUNT] = {0}; int32_t size_outval = sizeof(outval); int32_t size_inval = sizeof(input); int32_t error; /* if this is NULL call to find out size, send out size info */ if (!req->newptr) { error = SYSCTL_OUT(req, &outval[0], size_outval); return error; } /* pull in provided value from userspace */ error = SYSCTL_IN(req, &input[0], size_inval); if (error) { return error; } test_oslog_handleOSLogCtl(input, outval, ARRCOUNT); error = SYSCTL_OUT(req, &outval[0], size_outval); return error; } SYSCTL_PROC(_debug, OID_AUTO, test_OSLogCtl, CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_OPAQUE | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_debug_test_oslog_ctl, "I", "testing oslog in kernel"); #include <mach/task.h> #include <mach/semaphore.h> static LCK_GRP_DECLARE(sysctl_debug_test_stackshot_owner_grp, "test-stackshot-owner-grp"); static LCK_MTX_DECLARE(sysctl_debug_test_stackshot_owner_init_mtx, &sysctl_debug_test_stackshot_owner_grp); /* This is a sysctl for testing collection of owner info on a lock in kernel space. A multi-threaded * test from userland sets this sysctl in such a way that a thread blocks in kernel mode, and a * stackshot is taken to see if the owner of the lock can be identified. * * We can't return to userland with a kernel lock held, so be sure to unlock before we leave. * the semaphores allow us to artificially create cases where the lock is being held and the * thread is hanging / taking a long time to do something. */ volatile char sysctl_debug_test_stackshot_mtx_inited = 0; semaphore_t sysctl_debug_test_stackshot_mutex_sem; lck_mtx_t sysctl_debug_test_stackshot_owner_lck; #define SYSCTL_DEBUG_MTX_ACQUIRE_WAIT 1 #define SYSCTL_DEBUG_MTX_ACQUIRE_NOWAIT 2 #define SYSCTL_DEBUG_MTX_SIGNAL 3 #define SYSCTL_DEBUG_MTX_TEARDOWN 4 STATIC int sysctl_debug_test_stackshot_mutex_owner(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { long long option = -1; /* if the user tries to read the sysctl, we tell them what the address of the lock is (to test against stackshot's output) */ long long mtx_unslid_addr = (long long)VM_KERNEL_UNSLIDE_OR_PERM(&sysctl_debug_test_stackshot_owner_lck); int error = sysctl_io_number(req, mtx_unslid_addr, sizeof(long long), (void*)&option, NULL); lck_mtx_lock(&sysctl_debug_test_stackshot_owner_init_mtx); if (!sysctl_debug_test_stackshot_mtx_inited) { lck_mtx_init(&sysctl_debug_test_stackshot_owner_lck, &sysctl_debug_test_stackshot_owner_grp, LCK_ATTR_NULL); semaphore_create(kernel_task, &sysctl_debug_test_stackshot_mutex_sem, SYNC_POLICY_FIFO, 0); sysctl_debug_test_stackshot_mtx_inited = 1; } lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_init_mtx); if (!error) { switch (option) { case SYSCTL_DEBUG_MTX_ACQUIRE_NOWAIT: lck_mtx_lock(&sysctl_debug_test_stackshot_owner_lck); lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_lck); break; case SYSCTL_DEBUG_MTX_ACQUIRE_WAIT: lck_mtx_lock(&sysctl_debug_test_stackshot_owner_lck); semaphore_wait(sysctl_debug_test_stackshot_mutex_sem); lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_lck); break; case SYSCTL_DEBUG_MTX_SIGNAL: semaphore_signal(sysctl_debug_test_stackshot_mutex_sem); break; case SYSCTL_DEBUG_MTX_TEARDOWN: lck_mtx_lock(&sysctl_debug_test_stackshot_owner_init_mtx); lck_mtx_destroy(&sysctl_debug_test_stackshot_owner_lck, &sysctl_debug_test_stackshot_owner_grp); semaphore_destroy(kernel_task, sysctl_debug_test_stackshot_mutex_sem); sysctl_debug_test_stackshot_mtx_inited = 0; lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_init_mtx); break; case -1: /* user just wanted to read the value, so do nothing */ break; default: error = EINVAL; break; } } return error; } /* we can't return to userland with a kernel rwlock held, so be sure to unlock before we leave. * the semaphores allow us to artificially create cases where the lock is being held and the * thread is hanging / taking a long time to do something. */ SYSCTL_PROC(_debug, OID_AUTO, test_MutexOwnerCtl, CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_debug_test_stackshot_mutex_owner, "-", "Testing mutex owner in kernel"); volatile char sysctl_debug_test_stackshot_rwlck_inited = 0; lck_rw_t sysctl_debug_test_stackshot_owner_rwlck; semaphore_t sysctl_debug_test_stackshot_rwlck_sem; #define SYSCTL_DEBUG_KRWLCK_RACQUIRE_NOWAIT 1 #define SYSCTL_DEBUG_KRWLCK_RACQUIRE_WAIT 2 #define SYSCTL_DEBUG_KRWLCK_WACQUIRE_NOWAIT 3 #define SYSCTL_DEBUG_KRWLCK_WACQUIRE_WAIT 4 #define SYSCTL_DEBUG_KRWLCK_SIGNAL 5 #define SYSCTL_DEBUG_KRWLCK_TEARDOWN 6 STATIC int sysctl_debug_test_stackshot_rwlck_owner(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { long long option = -1; /* if the user tries to read the sysctl, we tell them what the address of the lock is * (to test against stackshot's output) */ long long rwlck_unslid_addr = (long long)VM_KERNEL_UNSLIDE_OR_PERM(&sysctl_debug_test_stackshot_owner_rwlck); int error = sysctl_io_number(req, rwlck_unslid_addr, sizeof(long long), (void*)&option, NULL); lck_mtx_lock(&sysctl_debug_test_stackshot_owner_init_mtx); if (!sysctl_debug_test_stackshot_rwlck_inited) { lck_rw_init(&sysctl_debug_test_stackshot_owner_rwlck, &sysctl_debug_test_stackshot_owner_grp, LCK_ATTR_NULL); semaphore_create(kernel_task, &sysctl_debug_test_stackshot_rwlck_sem, SYNC_POLICY_FIFO, 0); sysctl_debug_test_stackshot_rwlck_inited = 1; } lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_init_mtx); if (!error) { switch (option) { case SYSCTL_DEBUG_KRWLCK_RACQUIRE_NOWAIT: lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED); lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED); break; case SYSCTL_DEBUG_KRWLCK_RACQUIRE_WAIT: lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED); semaphore_wait(sysctl_debug_test_stackshot_rwlck_sem); lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_SHARED); break; case SYSCTL_DEBUG_KRWLCK_WACQUIRE_NOWAIT: lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE); lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE); break; case SYSCTL_DEBUG_KRWLCK_WACQUIRE_WAIT: lck_rw_lock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE); semaphore_wait(sysctl_debug_test_stackshot_rwlck_sem); lck_rw_unlock(&sysctl_debug_test_stackshot_owner_rwlck, LCK_RW_TYPE_EXCLUSIVE); break; case SYSCTL_DEBUG_KRWLCK_SIGNAL: semaphore_signal(sysctl_debug_test_stackshot_rwlck_sem); break; case SYSCTL_DEBUG_KRWLCK_TEARDOWN: lck_mtx_lock(&sysctl_debug_test_stackshot_owner_init_mtx); lck_rw_destroy(&sysctl_debug_test_stackshot_owner_rwlck, &sysctl_debug_test_stackshot_owner_grp); semaphore_destroy(kernel_task, sysctl_debug_test_stackshot_rwlck_sem); sysctl_debug_test_stackshot_rwlck_inited = 0; lck_mtx_unlock(&sysctl_debug_test_stackshot_owner_init_mtx); break; case -1: /* user just wanted to read the value, so do nothing */ break; default: error = EINVAL; break; } } return error; } SYSCTL_PROC(_debug, OID_AUTO, test_RWLockOwnerCtl, CTLFLAG_MASKED | CTLFLAG_ANYBODY | CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_debug_test_stackshot_rwlck_owner, "-", "Testing rwlock owner in kernel"); #endif /* !CONFIG_XNUPOST */ STATIC int sysctl_swapusage (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error; uint64_t swap_total; uint64_t swap_avail; vm_size_t swap_pagesize; boolean_t swap_encrypted; struct xsw_usage xsu = {}; error = macx_swapinfo(&swap_total, &swap_avail, &swap_pagesize, &swap_encrypted); if (error) { return error; } xsu.xsu_total = swap_total; xsu.xsu_avail = swap_avail; xsu.xsu_used = swap_total - swap_avail; xsu.xsu_pagesize = (u_int32_t)MIN(swap_pagesize, UINT32_MAX); xsu.xsu_encrypted = swap_encrypted; return sysctl_io_opaque(req, &xsu, sizeof(xsu), NULL); } SYSCTL_PROC(_vm, VM_SWAPUSAGE, swapusage, CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_swapusage, "S,xsw_usage", ""); extern int vm_swap_enabled; SYSCTL_INT(_vm, OID_AUTO, swap_enabled, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_swap_enabled, 0, ""); #if DEVELOPMENT || DEBUG extern int vm_num_swap_files_config; extern int vm_num_swap_files; extern lck_mtx_t vm_swap_data_lock; #define VM_MAX_SWAP_FILE_NUM 100 static int sysctl_vm_config_num_swap_files SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error = 0, val = vm_num_swap_files_config; error = sysctl_handle_int(oidp, &val, 0, req); if (error || !req->newptr) { goto out; } if (!VM_CONFIG_SWAP_IS_ACTIVE && !VM_CONFIG_FREEZER_SWAP_IS_ACTIVE) { printf("Swap is disabled\n"); error = EINVAL; goto out; } lck_mtx_lock(&vm_swap_data_lock); if (val < vm_num_swap_files) { printf("Cannot configure fewer swap files than already exist.\n"); error = EINVAL; lck_mtx_unlock(&vm_swap_data_lock); goto out; } if (val > VM_MAX_SWAP_FILE_NUM) { printf("Capping number of swap files to upper bound.\n"); val = VM_MAX_SWAP_FILE_NUM; } vm_num_swap_files_config = val; lck_mtx_unlock(&vm_swap_data_lock); out: return 0; } SYSCTL_PROC(_debug, OID_AUTO, num_swap_files_configured, CTLFLAG_ANYBODY | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_vm_config_num_swap_files, "I", ""); #endif /* DEVELOPMENT || DEBUG */ /* this kernel does NOT implement shared_region_make_private_np() */ SYSCTL_INT(_kern, KERN_SHREG_PRIVATIZABLE, shreg_private, CTLFLAG_RD | CTLFLAG_LOCKED, (int *)NULL, 0, ""); STATIC int fetch_process_cputype( proc_t cur_proc, int *name, u_int namelen, cpu_type_t *cputype) { proc_t p = PROC_NULL; int refheld = 0; cpu_type_t ret = 0; int error = 0; if (namelen == 0) { p = cur_proc; } else if (namelen == 1) { p = proc_find(name[0]); if (p == NULL) { return EINVAL; } refheld = 1; } else { error = EINVAL; goto out; } ret = cpu_type() & ~CPU_ARCH_MASK; if (IS_64BIT_PROCESS(p)) { ret |= CPU_ARCH_ABI64; } *cputype = ret; if (refheld != 0) { proc_rele(p); } out: return error; } #if CONFIG_ROSETTA STATIC int sysctl_sysctl_translated( __unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, __unused struct sysctl_req *req) { int res = 0; if (proc_is_translated(req->p)) { res = 1; } return SYSCTL_OUT(req, &res, sizeof(res)); } SYSCTL_PROC(_sysctl, OID_AUTO, proc_translated, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sysctl_translated, "I", "proc_translated"); #endif /* CONFIG_ROSETTA */ STATIC int sysctl_sysctl_native(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { int error; cpu_type_t proc_cputype = 0; if ((error = fetch_process_cputype(req->p, (int *)arg1, arg2, &proc_cputype)) != 0) { return error; } int res = 1; if ((proc_cputype & ~CPU_ARCH_MASK) != (cpu_type() & ~CPU_ARCH_MASK)) { res = 0; } return SYSCTL_OUT(req, &res, sizeof(res)); } SYSCTL_PROC(_sysctl, OID_AUTO, proc_native, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sysctl_native, "I", "proc_native"); STATIC int sysctl_sysctl_cputype(__unused struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req) { int error; cpu_type_t proc_cputype = 0; if ((error = fetch_process_cputype(req->p, (int *)arg1, arg2, &proc_cputype)) != 0) { return error; } return SYSCTL_OUT(req, &proc_cputype, sizeof(proc_cputype)); } SYSCTL_PROC(_sysctl, OID_AUTO, proc_cputype, CTLTYPE_NODE | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sysctl_cputype, "I", "proc_cputype"); STATIC int sysctl_safeboot (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_io_number(req, boothowto & RB_SAFEBOOT ? 1 : 0, sizeof(int), NULL, NULL); } SYSCTL_PROC(_kern, KERN_SAFEBOOT, safeboot, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_safeboot, "I", ""); STATIC int sysctl_singleuser (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_io_number(req, boothowto & RB_SINGLE ? 1 : 0, sizeof(int), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, singleuser, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_singleuser, "I", ""); STATIC int sysctl_minimalboot (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_io_number(req, minimalboot, sizeof(int), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, minimalboot, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_minimalboot, "I", ""); /* * Controls for debugging affinity sets - see osfmk/kern/affinity.c */ extern boolean_t affinity_sets_enabled; extern int affinity_sets_mapping; SYSCTL_INT(_kern, OID_AUTO, affinity_sets_enabled, CTLFLAG_RW | CTLFLAG_LOCKED, (int *) &affinity_sets_enabled, 0, "hinting enabled"); SYSCTL_INT(_kern, OID_AUTO, affinity_sets_mapping, CTLFLAG_RW | CTLFLAG_LOCKED, &affinity_sets_mapping, 0, "mapping policy"); /* * Boolean indicating if KASLR is active. */ STATIC int sysctl_slide (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { uint32_t slide; slide = vm_kernel_slide ? 1 : 0; return sysctl_io_number( req, slide, sizeof(int), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, slide, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_slide, "I", ""); #if DEBUG || DEVELOPMENT #if defined(__arm64__) extern vm_offset_t segTEXTEXECB; static int sysctl_kernel_text_exec_base_slide SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2, oidp) unsigned long slide = 0; kc_format_t kc_format; PE_get_primary_kc_format(&kc_format); if (kc_format == KCFormatFileset) { void *kch = PE_get_kc_header(KCKindPrimary); slide = (unsigned long)segTEXTEXECB - (unsigned long)kch + vm_kernel_slide; } return SYSCTL_OUT(req, &slide, sizeof(slide)); } SYSCTL_QUAD(_kern, OID_AUTO, kernel_slide, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_kernel_slide, ""); SYSCTL_QUAD(_kern, OID_AUTO, kernel_text_exec_base, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &segTEXTEXECB, ""); SYSCTL_PROC(_kern, OID_AUTO, kernel_text_exec_base_slide, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_kernel_text_exec_base_slide, "Q", ""); #endif /* defined(__arm64__) */ /* User address of the PFZ */ extern user32_addr_t commpage_text32_location; extern user64_addr_t commpage_text64_location; STATIC int sysctl_pfz_start SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) #ifdef __LP64__ return sysctl_io_number(req, commpage_text64_location, sizeof(user64_addr_t), NULL, NULL); #else return sysctl_io_number(req, commpage_text32_location, sizeof(user32_addr_t), NULL, NULL); #endif } SYSCTL_PROC(_kern, OID_AUTO, pfz, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, sysctl_pfz_start, "I", ""); #endif /* * Limit on total memory users can wire. * * vm_global_user_wire_limit - system wide limit on wired memory from all processes combined. * * vm_per_task_user_wire_limit - per address space limit on wired memory. This puts a cap on the process's rlimit value. * * These values are initialized to reasonable defaults at boot time based on the available physical memory in * kmem_init(). * * All values are in bytes. */ vm_map_size_t vm_global_user_wire_limit; vm_map_size_t vm_per_task_user_wire_limit; extern uint64_t max_mem_actual, max_mem; uint64_t vm_add_wire_count_over_global_limit; uint64_t vm_add_wire_count_over_user_limit; /* * We used to have a global in the kernel called vm_global_no_user_wire_limit which was the inverse * of vm_global_user_wire_limit. But maintaining both of those is silly, and vm_global_user_wire_limit is the * real limit. * This function is for backwards compatibility with userspace * since we exposed the old global via a sysctl. */ STATIC int sysctl_global_no_user_wire_amount(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { vm_map_size_t old_value; vm_map_size_t new_value; int changed; int error; uint64_t config_memsize = max_mem; #if defined(XNU_TARGET_OS_OSX) config_memsize = max_mem_actual; #endif /* defined(XNU_TARGET_OS_OSX) */ old_value = (vm_map_size_t)(config_memsize - vm_global_user_wire_limit); error = sysctl_io_number(req, old_value, sizeof(vm_map_size_t), &new_value, &changed); if (changed) { if ((uint64_t)new_value > config_memsize) { error = EINVAL; } else { vm_global_user_wire_limit = (vm_map_size_t)(config_memsize - new_value); } } return error; } /* * There needs to be a more automatic/elegant way to do this */ SYSCTL_QUAD(_vm, OID_AUTO, global_user_wire_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_global_user_wire_limit, ""); SYSCTL_QUAD(_vm, OID_AUTO, user_wire_limit, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_per_task_user_wire_limit, ""); SYSCTL_PROC(_vm, OID_AUTO, global_no_user_wire_amount, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, &sysctl_global_no_user_wire_amount, "Q", ""); /* * Relaxed atomic RW of a 64bit value via sysctl. */ STATIC int sysctl_r_64bit_atomic(uint64_t *ptr, struct sysctl_req *req) { uint64_t old_value; uint64_t new_value; int error; old_value = os_atomic_load_wide(ptr, relaxed); error = sysctl_io_number(req, old_value, sizeof(vm_map_size_t), &new_value, NULL); return error; } STATIC int sysctl_add_wire_count_over_global_limit(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_r_64bit_atomic(&vm_add_wire_count_over_global_limit, req); } STATIC int sysctl_add_wire_count_over_user_limit(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return sysctl_r_64bit_atomic(&vm_add_wire_count_over_user_limit, req); } SYSCTL_PROC(_vm, OID_AUTO, add_wire_count_over_global_limit, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, &sysctl_add_wire_count_over_global_limit, "Q", ""); SYSCTL_PROC(_vm, OID_AUTO, add_wire_count_over_user_limit, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, &sysctl_add_wire_count_over_user_limit, "Q", ""); #if DEVELOPMENT || DEBUG /* These sysctls are used to test the wired limit. */ SYSCTL_INT(_vm, OID_AUTO, page_wire_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_wire_count, 0, "The number of physical pages which are pinned and cannot be evicted"); #if XNU_VM_HAS_LOPAGE SYSCTL_INT(_vm, OID_AUTO, lopage_free_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_lopage_free_count, 0, ""); #endif SYSCTL_INT(_vm, OID_AUTO, page_stolen_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_stolen_count, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, page_swapped_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_swapped_count, 0, "The number of virtual pages whose contents are currently compressed and swapped to disk"); /* * Setting the per task variable exclude_physfootprint_ledger to 1 will allow the calling task to exclude memory entries that are * tagged by VM_LEDGER_TAG_DEFAULT and flagged by VM_LEDGER_FLAG_EXCLUDE_FOOTPRINT_DEBUG from its phys_footprint ledger. */ STATIC int sysctl_rw_task_no_footprint_for_debug(struct sysctl_oid *oidp __unused, void *arg1 __unused, int arg2 __unused, struct sysctl_req *req) { int error; int value; proc_t p = current_proc(); if (req->newptr) { // Write request error = SYSCTL_IN(req, &value, sizeof(value)); if (!error) { if (value == 1) { task_set_no_footprint_for_debug(proc_task(p), TRUE); } else if (value == 0) { task_set_no_footprint_for_debug(proc_task(p), FALSE); } else { error = EINVAL; } } } else { // Read request value = task_get_no_footprint_for_debug(proc_task(p)); error = SYSCTL_OUT(req, &value, sizeof(value)); } return error; } SYSCTL_PROC(_vm, OID_AUTO, task_no_footprint_for_debug, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY, 0, 0, &sysctl_rw_task_no_footprint_for_debug, "I", "Allow debug memory to be excluded from this task's memory footprint (debug only)"); #endif /* DEVELOPMENT || DEBUG */ extern int vm_map_copy_overwrite_aligned_src_not_internal; extern int vm_map_copy_overwrite_aligned_src_not_symmetric; extern int vm_map_copy_overwrite_aligned_src_large; SYSCTL_INT(_vm, OID_AUTO, vm_copy_src_not_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_copy_overwrite_aligned_src_not_internal, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_copy_src_not_symmetric, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_copy_overwrite_aligned_src_not_symmetric, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_copy_src_large, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_map_copy_overwrite_aligned_src_large, 0, ""); SYSCTL_SCALABLE_COUNTER(_vm, vm_page_internal_count, vm_page_internal_count, ""); SYSCTL_SCALABLE_COUNTER(_vm, vm_page_external_count, vm_page_external_count, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_filecache_min, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_filecache_min, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_xpmapped_min, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_xpmapped_min, 0, ""); #if DEVELOPMENT || DEBUG SYSCTL_INT(_vm, OID_AUTO, vm_page_filecache_min_divisor, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_filecache_min_divisor, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_xpmapped_min_divisor, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_state.vm_page_xpmapped_min_divisor, 0, ""); extern boolean_t vps_yield_for_pgqlockwaiters; SYSCTL_INT(_vm, OID_AUTO, vm_pageoutscan_yields_for_pageQlockwaiters, CTLFLAG_RW | CTLFLAG_LOCKED, &vps_yield_for_pgqlockwaiters, 0, ""); #endif extern int vm_compressor_mode; extern int vm_compressor_is_active; extern int vm_compressor_available; extern uint32_t c_seg_bufsize; extern uint32_t c_seg_allocsize; extern int c_seg_fixed_array_len; extern uint32_t c_segments_limit; extern uint32_t c_segment_pages_compressed_limit; extern uint64_t compressor_pool_size; extern uint32_t compressor_pool_multiplier; extern _Atomic uint64_t compressor_bytes_used; extern _Atomic uint64_t c_segment_input_bytes; extern _Atomic uint64_t c_segment_compressed_bytes; extern uint32_t c_segment_pages_compressed; extern uint32_t compressor_eval_period_in_msecs; extern uint32_t compressor_sample_min_in_msecs; extern uint32_t compressor_sample_max_in_msecs; extern uint32_t compressor_thrashing_threshold_per_10msecs; extern uint32_t compressor_thrashing_min_per_10msecs; extern uint32_t vm_compressor_time_thread; extern uint32_t c_segment_svp_in_hash; extern uint32_t c_segment_svp_hash_succeeded; extern uint32_t c_segment_svp_hash_failed; #if DEVELOPMENT || DEBUG extern uint32_t vm_compressor_minorcompact_threshold_divisor; extern uint32_t vm_compressor_majorcompact_threshold_divisor; extern uint32_t vm_compressor_unthrottle_threshold_divisor; extern uint32_t vm_compressor_catchup_threshold_divisor; extern uint32_t vm_compressor_minorcompact_threshold_divisor_overridden; extern uint32_t vm_compressor_majorcompact_threshold_divisor_overridden; extern uint32_t vm_compressor_unthrottle_threshold_divisor_overridden; extern uint32_t vm_compressor_catchup_threshold_divisor_overridden; extern vmct_stats_t vmct_stats; STATIC int sysctl_minorcompact_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, vm_compressor_minorcompact_threshold_divisor, sizeof(int), &new_value, &changed); if (changed) { vm_compressor_minorcompact_threshold_divisor = new_value; vm_compressor_minorcompact_threshold_divisor_overridden = 1; } return error; } SYSCTL_PROC(_vm, OID_AUTO, compressor_minorcompact_threshold_divisor, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW, 0, 0, sysctl_minorcompact_threshold_divisor, "I", ""); STATIC int sysctl_majorcompact_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, vm_compressor_majorcompact_threshold_divisor, sizeof(int), &new_value, &changed); if (changed) { vm_compressor_majorcompact_threshold_divisor = new_value; vm_compressor_majorcompact_threshold_divisor_overridden = 1; } return error; } SYSCTL_PROC(_vm, OID_AUTO, compressor_majorcompact_threshold_divisor, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW, 0, 0, sysctl_majorcompact_threshold_divisor, "I", ""); STATIC int sysctl_unthrottle_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, vm_compressor_unthrottle_threshold_divisor, sizeof(int), &new_value, &changed); if (changed) { vm_compressor_unthrottle_threshold_divisor = new_value; vm_compressor_unthrottle_threshold_divisor_overridden = 1; } return error; } SYSCTL_PROC(_vm, OID_AUTO, compressor_unthrottle_threshold_divisor, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW, 0, 0, sysctl_unthrottle_threshold_divisor, "I", ""); STATIC int sysctl_catchup_threshold_divisor(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, vm_compressor_catchup_threshold_divisor, sizeof(int), &new_value, &changed); if (changed) { vm_compressor_catchup_threshold_divisor = new_value; vm_compressor_catchup_threshold_divisor_overridden = 1; } return error; } SYSCTL_PROC(_vm, OID_AUTO, compressor_catchup_threshold_divisor, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW, 0, 0, sysctl_catchup_threshold_divisor, "I", ""); #endif SYSCTL_QUAD(_vm, OID_AUTO, compressor_input_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, ((uint64_t *)&c_segment_input_bytes), ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_compressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, ((uint64_t *)&c_segment_compressed_bytes), ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_bytes_used, CTLFLAG_RD | CTLFLAG_LOCKED, ((uint64_t *)&compressor_bytes_used), ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapout_target_age, CTLFLAG_RD | CTLFLAG_LOCKED, &swapout_target_age, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_available, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_compressor_available, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_segment_buffer_size, CTLFLAG_RD | CTLFLAG_LOCKED, &c_seg_bufsize, 0, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_pool_size, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_pool_size, ""); SYSCTL_UINT(_vm, OID_AUTO, compressor_pool_multiplier, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_pool_multiplier, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_segment_slots_fixed_array_len, CTLFLAG_RD | CTLFLAG_LOCKED, &c_seg_fixed_array_len, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, compressor_segment_pages_compressed_limit, CTLFLAG_RD | CTLFLAG_LOCKED, &c_segment_pages_compressed_limit, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, compressor_segment_alloc_size, CTLFLAG_RD | CTLFLAG_LOCKED, &c_seg_allocsize, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, compressor_segment_pages_compressed, CTLFLAG_RD | CTLFLAG_LOCKED, &c_segment_pages_compressed, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, compressor_segment_svp_in_hash, CTLFLAG_RD | CTLFLAG_LOCKED, &c_segment_svp_in_hash, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, compressor_segment_svp_hash_succeeded, CTLFLAG_RD | CTLFLAG_LOCKED, &c_segment_svp_hash_succeeded, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, compressor_segment_svp_hash_failed, CTLFLAG_RD | CTLFLAG_LOCKED, &c_segment_svp_hash_failed, 0, ""); #if CONFIG_TRACK_UNMODIFIED_ANON_PAGES extern uint64_t compressor_ro_uncompressed; extern uint64_t compressor_ro_uncompressed_total_returned; extern uint64_t compressor_ro_uncompressed_skip_returned; extern uint64_t compressor_ro_uncompressed_get; extern uint64_t compressor_ro_uncompressed_put; extern uint64_t compressor_ro_uncompressed_swap_usage; SYSCTL_QUAD(_vm, OID_AUTO, compressor_ro_uncompressed_total_returned, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_ro_uncompressed_total_returned, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_ro_uncompressed_writes_saved, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_ro_uncompressed_skip_returned, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_ro_uncompressed_candidates, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_ro_uncompressed, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_ro_uncompressed_rereads, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_ro_uncompressed_get, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_ro_uncompressed_swap_pages_on_disk, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_ro_uncompressed_swap_usage, ""); #endif /* CONFIG_TRACK_UNMODIFIED_ANON_PAGES */ extern int min_csegs_per_major_compaction; SYSCTL_INT(_vm, OID_AUTO, compressor_min_csegs_per_major_compaction, CTLFLAG_RW | CTLFLAG_LOCKED, &min_csegs_per_major_compaction, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_eval_period_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_eval_period_in_msecs, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_sample_min_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_sample_min_in_msecs, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_sample_max_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_sample_max_in_msecs, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_thrashing_threshold_per_10msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_thrashing_threshold_per_10msecs, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_thrashing_min_per_10msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &compressor_thrashing_min_per_10msecs, 0, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapouts_under_30s, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.unripe_under_30s, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapouts_under_60s, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.unripe_under_60s, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapouts_under_300s, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.unripe_under_300s, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapper_reclaim_swapins, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.reclaim_swapins, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapper_defrag_swapins, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.defrag_swapins, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapper_swapout_threshold_exceeded, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.compressor_swap_threshold_exceeded, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapper_swapout_fileq_throttled, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.external_q_throttled, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapper_swapout_free_count_low, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.free_count_below_reserve, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapper_swapout_thrashing_detected, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.thrashing_detected, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_swapper_swapout_fragmentation_detected, CTLFLAG_RD | CTLFLAG_LOCKED, &vmcs_stats.fragmentation_detected, ""); SYSCTL_STRING(_vm, OID_AUTO, swapfileprefix, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, swapfilename, sizeof(swapfilename) - SWAPFILENAME_INDEX_LEN, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_timing_enabled, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_time_thread, 0, ""); #if DEVELOPMENT || DEBUG SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_runtime0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_runtimes[0], ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_runtime1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_runtimes[1], ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_threads_total_execution_time, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_cthreads_total, ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_pages0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_pages[0], ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_pages1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_pages[1], ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_iterations0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_iterations[0], ""); SYSCTL_QUAD(_vm, OID_AUTO, compressor_thread_iterations1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_iterations[1], ""); SYSCTL_INT(_vm, OID_AUTO, compressor_thread_minpages0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_minpages[0], 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_thread_minpages1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_minpages[1], 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_thread_maxpages0, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_maxpages[0], 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_thread_maxpages1, CTLFLAG_RD | CTLFLAG_LOCKED, &vmct_stats.vmct_maxpages[1], 0, ""); int vm_compressor_injected_error_count; SYSCTL_INT(_vm, OID_AUTO, compressor_injected_error_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_compressor_injected_error_count, 0, ""); static int sysctl_compressor_inject_error(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int result; vm_address_t va = 0; int changed; result = sysctl_io_number(req, va, sizeof(va), &va, &changed); if (result == 0 && changed) { result = vm_map_inject_error(current_map(), va); if (result == 0) { /* * Count the number of errors injected successfully to detect * situations where corruption was caused by improper use of this * sysctl. */ os_atomic_inc(&vm_compressor_injected_error_count, relaxed); } } return result; } SYSCTL_PROC(_vm, OID_AUTO, compressor_inject_error, CTLTYPE_QUAD | CTLFLAG_LOCKED | CTLFLAG_RW, 0, 0, sysctl_compressor_inject_error, "Q", "flips a bit in a compressed page for the current task"); /* * Opt a process in/out of self donation mode. */ static int sysctl_vm_pid_toggle_selfdonate_pages SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, pid = 0; proc_t p; error = sysctl_handle_int(oidp, &pid, 0, req); if (error || !req->newptr) { return error; } p = proc_find(pid); if (p != NULL) { (void) vm_toggle_task_selfdonate_pages(proc_task(p)); proc_rele(p); return error; } else { printf("sysctl_vm_pid_selfdonate_pages: Invalid process\n"); } return EINVAL; } SYSCTL_PROC(_vm, OID_AUTO, pid_toggle_selfdonate_pages, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, &sysctl_vm_pid_toggle_selfdonate_pages, "I", ""); #endif /* DEVELOPMENT || DEBUG */ extern uint32_t vm_page_donate_mode; extern uint32_t vm_page_donate_target_high, vm_page_donate_target_low; SYSCTL_INT(_vm, OID_AUTO, vm_page_donate_mode, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_donate_mode, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_donate_target_high, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_donate_target_high, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_donate_target_low, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_donate_target_low, 0, ""); SYSCTL_QUAD(_vm, OID_AUTO, lz4_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_compressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, lz4_compression_failures, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_compression_failures, ""); SYSCTL_QUAD(_vm, OID_AUTO, lz4_compressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_compressed_bytes, ""); SYSCTL_QUAD(_vm, OID_AUTO, lz4_wk_compression_delta, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_wk_compression_delta, ""); SYSCTL_QUAD(_vm, OID_AUTO, lz4_wk_compression_negative_delta, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_wk_compression_negative_delta, ""); SYSCTL_QUAD(_vm, OID_AUTO, lz4_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_decompressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, lz4_decompressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.lz4_decompressed_bytes, ""); SYSCTL_QUAD(_vm, OID_AUTO, uc_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.uc_decompressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_catime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_cabstime, ""); SYSCTL_QUAD(_vm, OID_AUTO, wkh_catime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_cabstime, ""); SYSCTL_QUAD(_vm, OID_AUTO, wkh_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_compressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wks_catime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_cabstime, ""); SYSCTL_QUAD(_vm, OID_AUTO, wks_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_compressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_compressions_exclusive, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressions_exclusive, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_sv_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_sv_compressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_mzv_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_mzv_compressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_compression_failures, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compression_failures, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_compressed_bytes_exclusive, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressed_bytes_exclusive, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_compressed_bytes_total, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_compressed_bytes_total, ""); SYSCTL_QUAD(_vm, OID_AUTO, wks_compressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_compressed_bytes, ""); SYSCTL_QUAD(_vm, OID_AUTO, wks_compression_failures, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_compression_failures, ""); SYSCTL_QUAD(_vm, OID_AUTO, wks_sv_compressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_sv_compressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_decompressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_datime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_dabstime, ""); SYSCTL_QUAD(_vm, OID_AUTO, wkh_datime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_dabstime, ""); SYSCTL_QUAD(_vm, OID_AUTO, wkh_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wkh_decompressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wks_datime, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_dabstime, ""); SYSCTL_QUAD(_vm, OID_AUTO, wks_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wks_decompressions, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_decompressed_bytes, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_decompressed_bytes, ""); SYSCTL_QUAD(_vm, OID_AUTO, wk_sv_decompressions, CTLFLAG_RD | CTLFLAG_LOCKED, &compressor_stats.wk_sv_decompressions, ""); SYSCTL_INT(_vm, OID_AUTO, lz4_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_threshold, 0, ""); SYSCTL_INT(_vm, OID_AUTO, wkdm_reeval_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.wkdm_reeval_threshold, 0, ""); SYSCTL_INT(_vm, OID_AUTO, lz4_max_failure_skips, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_max_failure_skips, 0, ""); SYSCTL_INT(_vm, OID_AUTO, lz4_max_failure_run_length, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_max_failure_run_length, 0, ""); SYSCTL_INT(_vm, OID_AUTO, lz4_max_preselects, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_max_preselects, 0, ""); SYSCTL_INT(_vm, OID_AUTO, lz4_run_preselection_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_run_preselection_threshold, 0, ""); SYSCTL_INT(_vm, OID_AUTO, lz4_run_continue_bytes, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_run_continue_bytes, 0, ""); SYSCTL_INT(_vm, OID_AUTO, lz4_profitable_bytes, CTLFLAG_RW | CTLFLAG_LOCKED, &vmctune.lz4_profitable_bytes, 0, ""); #if DEVELOPMENT || DEBUG extern int vm_compressor_current_codec; extern int vm_compressor_test_seg_wp; extern boolean_t vm_compressor_force_sw_wkdm; SYSCTL_INT(_vm, OID_AUTO, compressor_codec, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_current_codec, 0, ""); SYSCTL_INT(_vm, OID_AUTO, compressor_test_wp, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_test_seg_wp, 0, ""); SYSCTL_INT(_vm, OID_AUTO, wksw_force, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_compressor_force_sw_wkdm, 0, ""); extern int precompy, wkswhw; SYSCTL_INT(_vm, OID_AUTO, precompy, CTLFLAG_RW | CTLFLAG_LOCKED, &precompy, 0, ""); SYSCTL_INT(_vm, OID_AUTO, wkswhw, CTLFLAG_RW | CTLFLAG_LOCKED, &wkswhw, 0, ""); extern unsigned int vm_ktrace_enabled; SYSCTL_INT(_vm, OID_AUTO, vm_ktrace, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_ktrace_enabled, 0, ""); #endif /* DEVELOPMENT || DEBUG */ #if CONFIG_PHANTOM_CACHE extern uint32_t phantom_cache_thrashing_threshold; extern uint32_t phantom_cache_eval_period_in_msecs; extern uint32_t phantom_cache_thrashing_threshold_ssd; SYSCTL_INT(_vm, OID_AUTO, phantom_cache_eval_period_in_msecs, CTLFLAG_RW | CTLFLAG_LOCKED, &phantom_cache_eval_period_in_msecs, 0, ""); SYSCTL_INT(_vm, OID_AUTO, phantom_cache_thrashing_threshold, CTLFLAG_RW | CTLFLAG_LOCKED, &phantom_cache_thrashing_threshold, 0, ""); SYSCTL_INT(_vm, OID_AUTO, phantom_cache_thrashing_threshold_ssd, CTLFLAG_RW | CTLFLAG_LOCKED, &phantom_cache_thrashing_threshold_ssd, 0, ""); #endif #if defined(__LP64__) extern uint32_t vm_page_background_count; extern uint32_t vm_page_background_target; extern uint32_t vm_page_background_internal_count; extern uint32_t vm_page_background_external_count; extern uint32_t vm_page_background_mode; extern uint32_t vm_page_background_exclude_external; extern uint64_t vm_page_background_promoted_count; extern uint64_t vm_pageout_rejected_bq_internal; extern uint64_t vm_pageout_rejected_bq_external; SYSCTL_INT(_vm, OID_AUTO, vm_page_background_mode, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_background_mode, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_background_exclude_external, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_background_exclude_external, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_background_target, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_page_background_target, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_background_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_count, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_background_internal_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_internal_count, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_page_background_external_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_external_count, 0, ""); SYSCTL_QUAD(_vm, OID_AUTO, vm_page_background_promoted_count, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_background_promoted_count, ""); SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_considered_bq_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_considered_bq_internal, ""); SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_considered_bq_external, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_vminfo.vm_pageout_considered_bq_external, ""); SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_rejected_bq_internal, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_rejected_bq_internal, ""); SYSCTL_QUAD(_vm, OID_AUTO, vm_pageout_rejected_bq_external, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_rejected_bq_external, ""); #endif /* __LP64__ */ extern boolean_t vm_darkwake_mode; STATIC int sysctl_toggle_darkwake_mode(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value, changed; int error = sysctl_io_number(req, vm_darkwake_mode, sizeof(int), &new_value, &changed); if (!error && changed) { if (new_value != 0 && new_value != 1) { printf("Error: Invalid value passed to darkwake sysctl. Acceptable: 0 or 1.\n"); error = EINVAL; } else { vm_update_darkwake_mode((boolean_t) new_value); } } return error; } SYSCTL_PROC(_vm, OID_AUTO, darkwake_mode, CTLTYPE_INT | CTLFLAG_LOCKED | CTLFLAG_RW, 0, 0, sysctl_toggle_darkwake_mode, "I", ""); #if (DEVELOPMENT || DEBUG) SYSCTL_UINT(_vm, OID_AUTO, vm_page_creation_throttled_hard, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_page_creation_throttled_hard, 0, ""); SYSCTL_UINT(_vm, OID_AUTO, vm_page_creation_throttled_soft, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &vm_page_creation_throttled_soft, 0, ""); extern uint32_t vm_pageout_memorystatus_fb_factor_nr; extern uint32_t vm_pageout_memorystatus_fb_factor_dr; SYSCTL_INT(_vm, OID_AUTO, vm_pageout_memorystatus_fb_factor_nr, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_memorystatus_fb_factor_nr, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_pageout_memorystatus_fb_factor_dr, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_memorystatus_fb_factor_dr, 0, ""); extern uint32_t vm_grab_anon_nops; SYSCTL_INT(_vm, OID_AUTO, vm_grab_anon_overrides, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_debug.vm_grab_anon_overrides, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_grab_anon_nops, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_pageout_debug.vm_grab_anon_nops, 0, ""); SYSCTL_INT(_vm, OID_AUTO, vm_pageout_yield_for_free_pages, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_pageout_debug.vm_pageout_yield_for_free_pages, 0, ""); extern int vm_page_delayed_work_ctx_needed; SYSCTL_INT(_vm, OID_AUTO, vm_page_needed_delayed_work_ctx, CTLFLAG_RD | CTLFLAG_LOCKED, &vm_page_delayed_work_ctx_needed, 0, ""); /* log message counters for persistence mode */ SCALABLE_COUNTER_DECLARE(oslog_p_total_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_metadata_saved_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_metadata_dropped_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_signpost_saved_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_signpost_dropped_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_error_count); SCALABLE_COUNTER_DECLARE(oslog_p_error_count); SCALABLE_COUNTER_DECLARE(oslog_p_saved_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_dropped_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_boot_dropped_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_coprocessor_total_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_coprocessor_dropped_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_unresolved_kc_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_fmt_invalid_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_fmt_max_args_msgcount); SCALABLE_COUNTER_DECLARE(oslog_p_truncated_msgcount); SCALABLE_COUNTER_DECLARE(oslog_subsystem_count); SCALABLE_COUNTER_DECLARE(oslog_subsystem_found); SCALABLE_COUNTER_DECLARE(oslog_subsystem_dropped); SCALABLE_COUNTER_DECLARE(log_queue_cnt_received); SCALABLE_COUNTER_DECLARE(log_queue_cnt_rejected_fh); SCALABLE_COUNTER_DECLARE(log_queue_cnt_sent); SCALABLE_COUNTER_DECLARE(log_queue_cnt_dropped_nomem); SCALABLE_COUNTER_DECLARE(log_queue_cnt_queued); SCALABLE_COUNTER_DECLARE(log_queue_cnt_dropped_off); SCALABLE_COUNTER_DECLARE(log_queue_cnt_mem_active); SCALABLE_COUNTER_DECLARE(log_queue_cnt_mem_allocated); SCALABLE_COUNTER_DECLARE(log_queue_cnt_mem_released); SCALABLE_COUNTER_DECLARE(log_queue_cnt_mem_failed); /* log message counters for streaming mode */ SCALABLE_COUNTER_DECLARE(oslog_s_total_msgcount); SCALABLE_COUNTER_DECLARE(oslog_s_metadata_msgcount); SCALABLE_COUNTER_DECLARE(oslog_s_error_count); SCALABLE_COUNTER_DECLARE(oslog_s_streamed_msgcount); SCALABLE_COUNTER_DECLARE(oslog_s_dropped_msgcount); /* log message counters for msgbuf logging */ SCALABLE_COUNTER_DECLARE(oslog_msgbuf_msgcount); SCALABLE_COUNTER_DECLARE(oslog_msgbuf_dropped_msgcount); extern uint32_t oslog_msgbuf_dropped_charcount; #if CONFIG_EXCLAVES /* log message counters for exclaves logging */ SCALABLE_COUNTER_DECLARE(oslog_e_log_count); SCALABLE_COUNTER_DECLARE(oslog_e_log_dropped_count); SCALABLE_COUNTER_DECLARE(oslog_e_metadata_count); SCALABLE_COUNTER_DECLARE(oslog_e_metadata_dropped_count); SCALABLE_COUNTER_DECLARE(oslog_e_signpost_count); SCALABLE_COUNTER_DECLARE(oslog_e_signpost_dropped_count); SCALABLE_COUNTER_DECLARE(oslog_e_replay_failure_count); SCALABLE_COUNTER_DECLARE(oslog_e_query_count); SCALABLE_COUNTER_DECLARE(oslog_e_query_error_count); SCALABLE_COUNTER_DECLARE(oslog_e_trace_mode_set_count); SCALABLE_COUNTER_DECLARE(oslog_e_trace_mode_error_count); #endif // CONFIG_EXCLAVES SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_total_msgcount, oslog_p_total_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_metadata_saved_msgcount, oslog_p_metadata_saved_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_metadata_dropped_msgcount, oslog_p_metadata_dropped_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_signpost_saved_msgcount, oslog_p_signpost_saved_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_signpost_dropped_msgcount, oslog_p_signpost_dropped_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_error_count, oslog_p_error_count, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_saved_msgcount, oslog_p_saved_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_dropped_msgcount, oslog_p_dropped_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_boot_dropped_msgcount, oslog_p_boot_dropped_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_coprocessor_total_msgcount, oslog_p_coprocessor_total_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_coprocessor_dropped_msgcount, oslog_p_coprocessor_dropped_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_unresolved_kc_msgcount, oslog_p_unresolved_kc_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_fmt_invalid_msgcount, oslog_p_fmt_invalid_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_fmt_max_args_msgcount, oslog_p_fmt_max_args_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_p_truncated_msgcount, oslog_p_truncated_msgcount, ""); SYSCTL_SCALABLE_COUNTER(_debug, oslog_s_total_msgcount, oslog_s_total_msgcount, "Number of logs sent to streaming"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_s_metadata_msgcount, oslog_s_metadata_msgcount, "Number of metadata sent to streaming"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_s_error_count, oslog_s_error_count, "Number of invalid stream logs"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_s_streamed_msgcount, oslog_s_streamed_msgcount, "Number of streamed logs"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_s_dropped_msgcount, oslog_s_dropped_msgcount, "Number of logs dropped from stream"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_msgbuf_msgcount, oslog_msgbuf_msgcount, "Number of dmesg log messages"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_msgbuf_dropped_msgcount, oslog_msgbuf_dropped_msgcount, "Number of dropped dmesg log messages"); SYSCTL_UINT(_debug, OID_AUTO, oslog_msgbuf_dropped_charcount, CTLFLAG_ANYBODY | CTLFLAG_RD | CTLFLAG_LOCKED, &oslog_msgbuf_dropped_charcount, 0, "Number of dropped dmesg log chars"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_received, log_queue_cnt_received, "Number of received logs"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_rejected_fh, log_queue_cnt_rejected_fh, "Number of logs initially rejected by FH"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_sent, log_queue_cnt_sent, "Number of logs successfully saved in FH"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_dropped_nomem, log_queue_cnt_dropped_nomem, "Number of logs dropped due to lack of queue memory"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_queued, log_queue_cnt_queued, "Current number of logs stored in log queues"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_dropped_off, log_queue_cnt_dropped_off, "Number of logs dropped due to disabled log queues"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_mem_allocated, log_queue_cnt_mem_allocated, "Number of memory allocations"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_mem_released, log_queue_cnt_mem_released, "Number of memory releases"); SYSCTL_SCALABLE_COUNTER(_debug, log_queue_cnt_mem_failed, log_queue_cnt_mem_failed, "Number of failed memory allocations"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_subsystem_count, oslog_subsystem_count, "Number of registered log subsystems"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_subsystem_found, oslog_subsystem_found, "Number of sucessful log subsystem lookups"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_subsystem_dropped, oslog_subsystem_dropped, "Number of dropped log subsystem registrations"); #if CONFIG_EXCLAVES SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_metadata_count, oslog_e_metadata_count, "Number of metadata messages retrieved from the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_metadata_dropped_count, oslog_e_metadata_dropped_count, "Number of dropped metadata messages retrieved from the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_log_count, oslog_e_log_count, "Number of logs retrieved from the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_log_dropped_count, oslog_e_log_dropped_count, "Number of dropeed logs retrieved from the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_signpost_count, oslog_e_signpost_count, "Number of signposts retrieved from the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_signpost_dropped_count, oslog_e_signpost_dropped_count, "Number of dropped signposts retrieved from the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_replay_failure_count, oslog_e_replay_failure_count, "Number of dropped messages that couldn't be replayed and failed generically"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_query_count, oslog_e_query_count, "Number of sucessful queries to the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_query_error_count, oslog_e_query_error_count, "Number of failed queries to the exclaves log server"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_trace_mode_set_count, oslog_e_trace_mode_set_count, "Number of exclaves trace mode updates"); SYSCTL_SCALABLE_COUNTER(_debug, oslog_e_trace_mode_error_count, oslog_e_trace_mode_error_count, "Number of failed exclaves trace mode updates"); #endif // CONFIG_EXCLAVES #endif /* DEVELOPMENT || DEBUG */ /* * Enable tracing of voucher contents */ extern uint32_t ipc_voucher_trace_contents; SYSCTL_INT(_kern, OID_AUTO, ipc_voucher_trace_contents, CTLFLAG_RW | CTLFLAG_LOCKED, &ipc_voucher_trace_contents, 0, "Enable tracing voucher contents"); /* * Kernel stack size and depth */ SYSCTL_INT(_kern, OID_AUTO, stack_size, CTLFLAG_RD | CTLFLAG_LOCKED, (int *) &kernel_stack_size, 0, "Kernel stack size"); SYSCTL_INT(_kern, OID_AUTO, stack_depth_max, CTLFLAG_RD | CTLFLAG_LOCKED, (int *) &kernel_stack_depth_max, 0, "Max kernel stack depth at interrupt or context switch"); extern unsigned int kern_feature_overrides; SYSCTL_INT(_kern, OID_AUTO, kern_feature_overrides, CTLFLAG_RD | CTLFLAG_LOCKED, &kern_feature_overrides, 0, "Kernel feature override mask"); /* * enable back trace for port allocations */ extern int ipc_portbt; SYSCTL_INT(_kern, OID_AUTO, ipc_portbt, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &ipc_portbt, 0, ""); /* * Scheduler sysctls */ SYSCTL_STRING(_kern, OID_AUTO, sched, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, sched_string, sizeof(sched_string), "Timeshare scheduler implementation"); static int sysctl_cpu_quiescent_counter_interval SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) uint32_t local_min_interval_us = smr_cpu_checkin_get_min_interval_us(); int error = sysctl_handle_int(oidp, &local_min_interval_us, 0, req); if (error || !req->newptr) { return error; } smr_cpu_checkin_set_min_interval_us(local_min_interval_us); return 0; } SYSCTL_PROC(_kern, OID_AUTO, cpu_checkin_interval, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_cpu_quiescent_counter_interval, "I", "Quiescent CPU checkin interval (microseconds)"); /* * Allow the precise user/kernel time sysctl to be set, but don't allow it to * affect anything. Some tools expect to be able to set this, even though * runtime configuration is no longer supported. */ static int sysctl_precise_user_kernel_time SYSCTL_HANDLER_ARGS { #if PRECISE_USER_KERNEL_TIME int dummy_set = 1; #else /* PRECISE_USER_KERNEL_TIME */ int dummy_set = 0; #endif /* !PRECISE_USER_KERNEL_TIME */ return sysctl_handle_int(oidp, &dummy_set, 0, req); } SYSCTL_PROC(_kern, OID_AUTO, precise_user_kernel_time, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_precise_user_kernel_time, "I", "Precise accounting of kernel vs. user time (deprecated)"); #if CONFIG_PERVASIVE_ENERGY && HAS_CPU_DPE_COUNTER __security_const_late static int pervasive_energy = 1; #else /* CONFIG_PERVASIVE_ENERGY && HAS_CPU_DPE_COUNTER */ __security_const_late static int pervasive_energy = 0; #endif /* !CONFIG_PERVASIVE_ENERGY || !HAS_CPU_DPE_COUNTER */ SYSCTL_INT(_kern, OID_AUTO, pervasive_energy, CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, &pervasive_energy, 0, ""); /* Parameters related to timer coalescing tuning, to be replaced * with a dedicated systemcall in the future. */ /* Enable processing pending timers in the context of any other interrupt * Coalescing tuning parameters for various thread/task attributes */ STATIC int sysctl_timer_user_us_kernel_abstime SYSCTL_HANDLER_ARGS { #pragma unused(oidp) int size = arg2; /* subcommand*/ int error; int changed = 0; uint64_t old_value_ns; uint64_t new_value_ns; uint64_t value_abstime; if (size == sizeof(uint32_t)) { value_abstime = *((uint32_t *)arg1); } else if (size == sizeof(uint64_t)) { value_abstime = *((uint64_t *)arg1); } else { return ENOTSUP; } absolutetime_to_nanoseconds(value_abstime, &old_value_ns); error = sysctl_io_number(req, old_value_ns, sizeof(old_value_ns), &new_value_ns, &changed); if ((error) || (!changed)) { return error; } nanoseconds_to_absolutetime(new_value_ns, &value_abstime); if (size == sizeof(uint32_t)) { *((uint32_t *)arg1) = (uint32_t)value_abstime; } else { *((uint64_t *)arg1) = value_abstime; } return error; } SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_bg_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_bg_shift, 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_resort_threshold_ns, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_resort_threshold_abstime, sizeof(tcoal_prio_params.timer_resort_threshold_abstime), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_bg_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_bg_abstime_max, sizeof(tcoal_prio_params.timer_coalesce_bg_abstime_max), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_kt_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_kt_shift, 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_kt_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_kt_abstime_max, sizeof(tcoal_prio_params.timer_coalesce_kt_abstime_max), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_fp_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_fp_shift, 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_fp_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_fp_abstime_max, sizeof(tcoal_prio_params.timer_coalesce_fp_abstime_max), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_ts_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_ts_shift, 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_ts_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.timer_coalesce_ts_abstime_max, sizeof(tcoal_prio_params.timer_coalesce_ts_abstime_max), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier0_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_scale[0], 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier0_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_abstime_max[0], sizeof(tcoal_prio_params.latency_qos_abstime_max[0]), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier1_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_scale[1], 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier1_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_abstime_max[1], sizeof(tcoal_prio_params.latency_qos_abstime_max[1]), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier2_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_scale[2], 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier2_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_abstime_max[2], sizeof(tcoal_prio_params.latency_qos_abstime_max[2]), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier3_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_scale[3], 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier3_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_abstime_max[3], sizeof(tcoal_prio_params.latency_qos_abstime_max[3]), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier4_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_scale[4], 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier4_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_abstime_max[4], sizeof(tcoal_prio_params.latency_qos_abstime_max[4]), sysctl_timer_user_us_kernel_abstime, "Q", ""); SYSCTL_INT(_kern, OID_AUTO, timer_coalesce_tier5_scale, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_scale[5], 0, ""); SYSCTL_PROC(_kern, OID_AUTO, timer_coalesce_tier5_ns_max, CTLTYPE_QUAD | CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &tcoal_prio_params.latency_qos_abstime_max[5], sizeof(tcoal_prio_params.latency_qos_abstime_max[5]), sysctl_timer_user_us_kernel_abstime, "Q", ""); /* Communicate the "user idle level" heuristic to the timer layer, and * potentially other layers in the future. */ static int timer_user_idle_level(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int new_value = 0, old_value = 0, changed = 0, error; old_value = timer_get_user_idle_level(); error = sysctl_io_number(req, old_value, sizeof(int), &new_value, &changed); if (error == 0 && changed) { if (timer_set_user_idle_level(new_value) != KERN_SUCCESS) { error = ERANGE; } } return error; } SYSCTL_PROC(_machdep, OID_AUTO, user_idle_level, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, timer_user_idle_level, "I", "User idle level heuristic, 0-128"); #if DEVELOPMENT || DEBUG /* * Basic console mode for games; used for development purposes only. * Final implementation for this feature (with possible removal of * sysctl) tracked via rdar://101215873. */ static int console_mode = 0; SYSCTL_INT(_kern, OID_AUTO, console_mode, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_MASKED, &console_mode, 0, "Game Console Mode"); #endif /* DEVELOPMENT || DEBUG */ #if HYPERVISOR SYSCTL_INT(_kern, OID_AUTO, hv_support, CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, &hv_support_available, 0, ""); SYSCTL_INT(_kern, OID_AUTO, hv_disable, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &hv_disable, 0, ""); #endif /* HYPERVISOR */ #if DEVELOPMENT || DEBUG extern uint64_t driverkit_checkin_timed_out; SYSCTL_QUAD(_kern, OID_AUTO, driverkit_checkin_timed_out, CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_LOCKED, &driverkit_checkin_timed_out, "timestamp of dext checkin timeout"); #endif #if CONFIG_DARKBOOT STATIC int sysctl_darkboot SYSCTL_HANDLER_ARGS { int err = 0, value = 0; #pragma unused(oidp, arg1, arg2, err, value, req) /* * Handle the sysctl request. * * If this is a read, the function will set the value to the current darkboot value. Otherwise, * we'll get the request identifier into "value" and then we can honor it. */ if ((err = sysctl_io_number(req, darkboot, sizeof(int), &value, NULL)) != 0) { goto exit; } /* writing requested, let's process the request */ if (req->newptr) { /* writing is protected by an entitlement */ if (priv_check_cred(kauth_cred_get(), PRIV_DARKBOOT, 0) != 0) { err = EPERM; goto exit; } switch (value) { case MEMORY_MAINTENANCE_DARK_BOOT_UNSET: /* * If the darkboot sysctl is unset, the NVRAM variable * must be unset too. If that's not the case, it means * someone is doing something crazy and not supported. */ if (darkboot != 0) { int ret = PERemoveNVRAMProperty(MEMORY_MAINTENANCE_DARK_BOOT_NVRAM_NAME); if (ret) { darkboot = 0; } else { err = EINVAL; } } break; case MEMORY_MAINTENANCE_DARK_BOOT_SET: darkboot = 1; break; case MEMORY_MAINTENANCE_DARK_BOOT_SET_PERSISTENT: { /* * Set the NVRAM and update 'darkboot' in case * of success. Otherwise, do not update * 'darkboot' and report the failure. */ if (PEWriteNVRAMBooleanProperty(MEMORY_MAINTENANCE_DARK_BOOT_NVRAM_NAME, TRUE)) { darkboot = 1; } else { err = EINVAL; } break; } default: err = EINVAL; } } exit: return err; } SYSCTL_PROC(_kern, OID_AUTO, darkboot, CTLFLAG_KERN | CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY, 0, 0, sysctl_darkboot, "I", ""); #endif /* CONFIG_DARKBOOT */ #if DEVELOPMENT || DEBUG #include <sys/sysent.h> /* This should result in a fatal exception, verifying that "sysent" is * write-protected. */ static int kern_sysent_write(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { uint64_t new_value = 0, old_value = 0; int changed = 0, error; error = sysctl_io_number(req, old_value, sizeof(uint64_t), &new_value, &changed); if ((error == 0) && changed) { volatile uint32_t *wraddr = __DECONST(uint32_t *, &sysent[0]); *wraddr = 0; printf("sysent[0] write succeeded\n"); } return error; } SYSCTL_PROC(_kern, OID_AUTO, sysent_const_check, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, kern_sysent_write, "I", "Attempt sysent[0] write"); #endif #if DEVELOPMENT || DEBUG SYSCTL_COMPAT_INT(_kern, OID_AUTO, development, CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_KERN, NULL, 1, ""); #else SYSCTL_COMPAT_INT(_kern, OID_AUTO, development, CTLFLAG_RD | CTLFLAG_MASKED, NULL, 0, ""); #endif SYSCTL_INT(_kern, OID_AUTO, serverperfmode, CTLFLAG_RD, &serverperfmode, 0, ""); #if DEVELOPMENT || DEBUG decl_lck_spin_data(, spinlock_panic_test_lock); __attribute__((noreturn)) static void spinlock_panic_test_acquire_spinlock(void * arg __unused, wait_result_t wres __unused) { lck_spin_lock(&spinlock_panic_test_lock); while (1) { ; } } static int sysctl_spinlock_panic_test SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) if (req->newlen == 0) { return EINVAL; } thread_t panic_spinlock_thread; /* Initialize panic spinlock */ lck_grp_t * panic_spinlock_grp; lck_grp_attr_t * panic_spinlock_grp_attr; lck_attr_t * panic_spinlock_attr; panic_spinlock_grp_attr = lck_grp_attr_alloc_init(); panic_spinlock_grp = lck_grp_alloc_init("panic_spinlock", panic_spinlock_grp_attr); panic_spinlock_attr = lck_attr_alloc_init(); lck_spin_init(&spinlock_panic_test_lock, panic_spinlock_grp, panic_spinlock_attr); /* Create thread to acquire spinlock */ if (kernel_thread_start(spinlock_panic_test_acquire_spinlock, NULL, &panic_spinlock_thread) != KERN_SUCCESS) { return EBUSY; } /* Try to acquire spinlock -- should panic eventually */ lck_spin_lock(&spinlock_panic_test_lock); while (1) { ; } } __attribute__((noreturn)) static void simultaneous_panic_worker (void * arg, wait_result_t wres __unused) { atomic_int *start_panic = (atomic_int *)arg; while (!atomic_load(start_panic)) { ; } panic("SIMULTANEOUS PANIC TEST: INITIATING PANIC FROM CPU %d", cpu_number()); __builtin_unreachable(); } static int sysctl_simultaneous_panic_test SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) if (req->newlen == 0) { return EINVAL; } int i = 0, threads_to_create = 2 * processor_count; atomic_int start_panic = 0; unsigned int threads_created = 0; thread_t new_panic_thread; for (i = threads_to_create; i > 0; i--) { if (kernel_thread_start(simultaneous_panic_worker, (void *) &start_panic, &new_panic_thread) == KERN_SUCCESS) { threads_created++; } } /* FAIL if we couldn't create at least processor_count threads */ if (threads_created < processor_count) { panic("SIMULTANEOUS PANIC TEST: FAILED TO CREATE ENOUGH THREADS, ONLY CREATED %d (of %d)", threads_created, threads_to_create); } atomic_exchange(&start_panic, 1); while (1) { ; } } #if __arm64__ && (DEVELOPMENT || DEBUG) #if CONFIG_SPTM extern void __attribute__((noreturn)) sptm_vs_xnu_panic_test(void); extern void __attribute__((noreturn)) xnu_vs_sptm_panic_test(void); extern void __attribute__((noreturn)) sptm_vs_sptm_panic_test(void); #endif /* CONFIG_SPTM */ extern void __attribute__((noreturn)) xnu_vs_xnu_panic_test(void); extern void __attribute__((noreturn)) stack_overflow_panic_test(void); static int sysctl_panic_test SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error) { return error; } switch (val) { #if CONFIG_SPTM case 1: sptm_vs_xnu_panic_test(); case 2: xnu_vs_sptm_panic_test(); case 3: sptm_vs_sptm_panic_test(); #endif /* CONFIG_SPTM */ case 4: xnu_vs_xnu_panic_test(); case 5: (void) ml_set_interrupts_enabled(false); stack_overflow_panic_test(); case 6: Debugger("panic_test"); break; default: return ERANGE; } return 0; } SYSCTL_PROC(_debug, OID_AUTO, panic_test, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, sysctl_panic_test, "I", "panic test"); #endif /* __arm64__ && (DEVELOPMENT || DEBUG) */ extern unsigned int panic_test_failure_mode; SYSCTL_INT(_debug, OID_AUTO, xnu_panic_failure_mode, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_KERN, &panic_test_failure_mode, 0, "panic/debugger test failure mode"); extern unsigned int panic_test_action_count; SYSCTL_INT(_debug, OID_AUTO, xnu_panic_action_count, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_KERN, &panic_test_action_count, 0, "panic/debugger test action count"); extern unsigned int panic_test_case; SYSCTL_INT(_debug, OID_AUTO, xnu_panic_test_case, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_KERN, &panic_test_case, 0, "panic/debugger testcase"); SYSCTL_PROC(_debug, OID_AUTO, xnu_spinlock_panic_test, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_MASKED, 0, 0, sysctl_spinlock_panic_test, "A", "spinlock panic test"); SYSCTL_PROC(_debug, OID_AUTO, xnu_simultaneous_panic_test, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_KERN | CTLFLAG_MASKED, 0, 0, sysctl_simultaneous_panic_test, "A", "simultaneous panic test"); #if HAS_UPSI_FAILURE_INJECTION extern uint64_t xnu_upsi_injection_stage; SYSCTL_QUAD(_debug, OID_AUTO, xnu_upsi_injection_stage, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_KERN, &xnu_upsi_injection_stage, "UPSI failure injection stage"); extern uint64_t xnu_upsi_injection_action; SYSCTL_QUAD(_debug, OID_AUTO, xnu_upsi_injection_action, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_KERN, &xnu_upsi_injection_action, "UPSI failure injection action"); #endif /* HAS_UPSI_FAILURE_INJECTION */ extern int exc_resource_threads_enabled; SYSCTL_INT(_kern, OID_AUTO, exc_resource_threads_enabled, CTLFLAG_RW | CTLFLAG_LOCKED, &exc_resource_threads_enabled, 0, "exc_resource thread limit enabled"); extern unsigned int verbose_panic_flow_logging; SYSCTL_INT(_debug, OID_AUTO, verbose_panic_flow_logging, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_KERN, &verbose_panic_flow_logging, 0, "verbose logging during panic"); #endif /* DEVELOPMENT || DEBUG */ #if BUILT_LTO static int _built_lto = 1; #else // BUILT_LTO static int _built_lto = 0; #endif // !BUILT_LTO SYSCTL_INT(_kern, OID_AUTO, link_time_optimized, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, &_built_lto, 0, "Whether the kernel was built with Link Time Optimization enabled"); #if CONFIG_THREAD_GROUPS #if DEVELOPMENT || DEBUG static int sysctl_get_thread_group_id SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2, oidp) uint64_t thread_group_id = thread_group_get_id(thread_group_get(current_thread())); return SYSCTL_OUT(req, &thread_group_id, sizeof(thread_group_id)); } SYSCTL_PROC(_kern, OID_AUTO, thread_group_id, CTLFLAG_RD | CTLFLAG_LOCKED | CTLTYPE_QUAD, 0, 0, &sysctl_get_thread_group_id, "I", "thread group id of the thread"); extern kern_return_t sysctl_clutch_thread_group_cpu_time_for_thread(thread_t thread, int sched_bucket, uint64_t *cpu_stats); static int sysctl_get_clutch_bucket_group_cpu_stats SYSCTL_HANDLER_ARGS { int error; kern_return_t kr; int sched_bucket = -1; error = SYSCTL_IN(req, &sched_bucket, sizeof(sched_bucket)); if (error) { return error; } uint64_t cpu_stats[2]; kr = sysctl_clutch_thread_group_cpu_time_for_thread(current_thread(), sched_bucket, cpu_stats); error = mach_to_bsd_errno(kr); if (error) { return error; } return SYSCTL_OUT(req, cpu_stats, sizeof(cpu_stats)); } SYSCTL_PROC(_kern, OID_AUTO, clutch_bucket_group_cpu_stats, CTLFLAG_RW | CTLFLAG_LOCKED | CTLTYPE_OPAQUE, 0, 0, &sysctl_get_clutch_bucket_group_cpu_stats, "I", "CPU used and blocked time for the current thread group at a specified scheduling bucket"); STATIC int sysctl_thread_group_count(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int value = thread_group_count(); return sysctl_io_number(req, value, sizeof(value), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, thread_group_count, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, 0, 0, &sysctl_thread_group_count, "I", "count of thread groups"); #endif /* DEVELOPMENT || DEBUG */ const uint32_t thread_groups_supported = 1; #else /* CONFIG_THREAD_GROUPS */ const uint32_t thread_groups_supported = 0; #endif /* CONFIG_THREAD_GROUPS */ STATIC int sysctl_thread_groups_supported(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int value = thread_groups_supported; return sysctl_io_number(req, value, sizeof(value), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, thread_groups_supported, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, 0, 0, &sysctl_thread_groups_supported, "I", "thread groups supported"); static int sysctl_grade_cputype SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2, oidp) int error = 0; int type_tuple[2] = {}; int return_value = 0; error = SYSCTL_IN(req, &type_tuple, sizeof(type_tuple)); if (error) { return error; } return_value = grade_binary(type_tuple[0], type_tuple[1] & ~CPU_SUBTYPE_MASK, type_tuple[1] & CPU_SUBTYPE_MASK, FALSE); error = SYSCTL_OUT(req, &return_value, sizeof(return_value)); if (error) { return error; } return error; } SYSCTL_PROC(_kern, OID_AUTO, grade_cputype, CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_MASKED | CTLFLAG_LOCKED | CTLTYPE_OPAQUE, 0, 0, &sysctl_grade_cputype, "S", "grade value of cpu_type_t+cpu_sub_type_t"); #if DEVELOPMENT || DEBUG STATIC int sysctl_binary_grade_override( __unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { int error; user_addr_t oldp = 0, newp = 0; size_t *oldlenp = NULL; size_t newlen = 0; oldp = req->oldptr; oldlenp = &(req->oldlen); newp = req->newptr; newlen = req->newlen; /* We want the current length, and maybe the string itself */ if (oldlenp) { char existing_overrides[256] = { 0 }; size_t currlen = bingrade_get_override_string(existing_overrides, sizeof(existing_overrides)); if (oldp && currlen > 0) { if (*oldlenp < currlen) { return ENOMEM; } /* NOTE - we do not copy the NULL terminator */ error = copyout(existing_overrides, oldp, currlen); if (error) { return error; } } /* return length of overrides minus the NULL terminator (just like strlen) */ req->oldidx = currlen; } /* We want to set the override string to something */ if (newp) { char *tmp_override = (char *)kalloc_data(newlen + 1, Z_WAITOK | Z_ZERO); if (!tmp_override) { return ENOMEM; } error = copyin(newp, tmp_override, newlen); if (error) { kfree_data(tmp_override, newlen + 1); return error; } tmp_override[newlen] = 0; /* Terminate string */ /* Set the binary grading overrides */ if (binary_grade_overrides_update(tmp_override) == 0) { /* Nothing got set. */ kfree_data(tmp_override, newlen + 1); return EINVAL; } kfree_data(tmp_override, newlen + 1); } return 0; } SYSCTL_PROC(_kern, OID_AUTO, grade_override, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, &sysctl_binary_grade_override, "A", ""); #endif /* DEVELOPMENT || DEBUG */ extern boolean_t allow_direct_handoff; SYSCTL_INT(_kern, OID_AUTO, direct_handoff, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &allow_direct_handoff, 0, "Enable direct handoff for realtime threads"); #if DEVELOPMENT || DEBUG SYSCTL_QUAD(_kern, OID_AUTO, phys_carveout_pa, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, &phys_carveout_pa, "base physical address of the phys_carveout_mb boot-arg region"); SYSCTL_QUAD(_kern, OID_AUTO, phys_carveout_va, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, &phys_carveout, "base virtual address of the phys_carveout_mb boot-arg region"); SYSCTL_QUAD(_kern, OID_AUTO, phys_carveout_size, CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, &phys_carveout_size, "size in bytes of the phys_carveout_mb boot-arg region"); static int cseg_wedge_setup SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } do_cseg_wedge_setup(); return 0; } SYSCTL_PROC(_kern, OID_AUTO, cseg_wedge_setup, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, cseg_wedge_setup, "I", "setup for wedging c_seg thread"); static int cseg_wedge_thread SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } do_cseg_wedge_thread(); return 0; } SYSCTL_PROC(_kern, OID_AUTO, cseg_wedge_thread, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, cseg_wedge_thread, "I", "wedge c_seg thread"); static int cseg_unwedge_thread SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } do_cseg_unwedge_thread(); return 0; } SYSCTL_PROC(_kern, OID_AUTO, cseg_unwedge_thread, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, cseg_unwedge_thread, "I", "unstuck c_seg thread"); static atomic_int wedge_thread_should_wake = 0; static int unwedge_thread SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } atomic_store(&wedge_thread_should_wake, 1); return 0; } SYSCTL_PROC(_kern, OID_AUTO, unwedge_thread, CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, unwedge_thread, "I", "unwedge the thread wedged by kern.wedge_thread"); static int wedge_thread SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } uint64_t interval = 1; nanoseconds_to_absolutetime(1000 * 1000 * 50, &interval); atomic_store(&wedge_thread_should_wake, 0); while (!atomic_load(&wedge_thread_should_wake)) { tsleep1(NULL, 0, "wedge_thread", mach_absolute_time() + interval, NULL); } return 0; } SYSCTL_PROC(_kern, OID_AUTO, wedge_thread, CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, wedge_thread, "I", "wedge this thread so it cannot be cleaned up"); static int sysctl_total_corpses_count SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) extern unsigned long total_corpses_count(void); unsigned long corpse_count_long = total_corpses_count(); unsigned int corpse_count = (unsigned int)MIN(corpse_count_long, UINT_MAX); return sysctl_io_opaque(req, &corpse_count, sizeof(corpse_count), NULL); } SYSCTL_PROC(_kern, OID_AUTO, total_corpses_count, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_LOCKED, 0, 0, sysctl_total_corpses_count, "I", "total corpses on the system"); static int sysctl_turnstile_test_prim_lock SYSCTL_HANDLER_ARGS; static int sysctl_turnstile_test_prim_unlock SYSCTL_HANDLER_ARGS; int tstile_test_prim_lock(boolean_t use_hashtable); int tstile_test_prim_unlock(boolean_t use_hashtable); static int sysctl_turnstile_test_prim_lock SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } switch (val) { case SYSCTL_TURNSTILE_TEST_USER_DEFAULT: case SYSCTL_TURNSTILE_TEST_USER_HASHTABLE: case SYSCTL_TURNSTILE_TEST_KERNEL_DEFAULT: case SYSCTL_TURNSTILE_TEST_KERNEL_HASHTABLE: return tstile_test_prim_lock(val); default: return error; } } static int sysctl_turnstile_test_prim_unlock SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } switch (val) { case SYSCTL_TURNSTILE_TEST_USER_DEFAULT: case SYSCTL_TURNSTILE_TEST_USER_HASHTABLE: case SYSCTL_TURNSTILE_TEST_KERNEL_DEFAULT: case SYSCTL_TURNSTILE_TEST_KERNEL_HASHTABLE: return tstile_test_prim_unlock(val); default: return error; } } SYSCTL_PROC(_kern, OID_AUTO, turnstiles_test_lock, CTLFLAG_WR | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_turnstile_test_prim_lock, "I", "turnstiles test lock"); SYSCTL_PROC(_kern, OID_AUTO, turnstiles_test_unlock, CTLFLAG_WR | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_turnstile_test_prim_unlock, "I", "turnstiles test unlock"); int turnstile_get_boost_stats_sysctl(void *req); int turnstile_get_unboost_stats_sysctl(void *req); static int sysctl_turnstile_boost_stats SYSCTL_HANDLER_ARGS; static int sysctl_turnstile_unboost_stats SYSCTL_HANDLER_ARGS; extern uint64_t thread_block_on_turnstile_count; extern uint64_t thread_block_on_regular_waitq_count; static int sysctl_turnstile_boost_stats SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2, oidp) return turnstile_get_boost_stats_sysctl(req); } static int sysctl_turnstile_unboost_stats SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2, oidp) return turnstile_get_unboost_stats_sysctl(req); } SYSCTL_PROC(_kern, OID_AUTO, turnstile_boost_stats, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLTYPE_STRUCT, 0, 0, sysctl_turnstile_boost_stats, "S", "turnstiles boost stats"); SYSCTL_PROC(_kern, OID_AUTO, turnstile_unboost_stats, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLTYPE_STRUCT, 0, 0, sysctl_turnstile_unboost_stats, "S", "turnstiles unboost stats"); SYSCTL_QUAD(_kern, OID_AUTO, thread_block_count_on_turnstile, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED, &thread_block_on_turnstile_count, "thread blocked on turnstile count"); SYSCTL_QUAD(_kern, OID_AUTO, thread_block_count_on_reg_waitq, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED, &thread_block_on_regular_waitq_count, "thread blocked on regular waitq count"); #if CONFIG_PV_TICKET extern int ticket_lock_spins; SYSCTL_INT(_kern, OID_AUTO, ticket_lock_spins, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, &ticket_lock_spins, 0, "loops before hypercall"); #if (DEBUG || DEVELOPMENT) /* PV ticket lock stats */ SYSCTL_SCALABLE_COUNTER(_kern, ticket_lock_kicks, ticket_kick_count, "ticket lock kicks"); SYSCTL_SCALABLE_COUNTER(_kern, ticket_lock_waits, ticket_wait_count, "ticket lock waits"); SYSCTL_SCALABLE_COUNTER(_kern, ticket_lock_already, ticket_already_count, "ticket lock already unlocked"); SYSCTL_SCALABLE_COUNTER(_kern, ticket_lock_just_unlock, ticket_just_unlock, "ticket unlock without kick"); SYSCTL_SCALABLE_COUNTER(_kern, ticket_lock_wflag_cleared, ticket_wflag_cleared, "ticket lock wait flag cleared"); SYSCTL_SCALABLE_COUNTER(_kern, ticket_lock_wflag_still, ticket_wflag_still, "ticket lock wait flag not cleared"); SYSCTL_SCALABLE_COUNTER(_kern, ticket_lock_spin_count, ticket_spin_count, "ticket lock spin count"); /* sysctl kern.hcall_probe=n -- does hypercall #n exist? */ static int sysctl_hcall_probe SYSCTL_HANDLER_ARGS { char instr[20]; if (!req->newptr) { return 0; } if (req->newlen >= sizeof(instr)) { return EOVERFLOW; } int error = SYSCTL_IN(req, instr, req->newlen); if (error) { return error; } instr[req->newlen] = '\0'; int hcall = 0; error = sscanf(instr, "%d", &hcall); if (error != 1 || hcall < 0) { return EINVAL; } uprintf("%savailable\n", hvg_is_hcall_available((hvg_hcall_code_t)hcall) ? "" : "not "); return 0; } SYSCTL_PROC(_kern, OID_AUTO, hcall_probe, CTLTYPE_STRING | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, sysctl_hcall_probe, "A", "probe hypercall by id"); #endif /* (DEBUG || DEVELOPMENT) */ #endif /* CONFIG_PV_TICKET */ #if defined(__x86_64__) extern uint64_t MutexSpin; SYSCTL_QUAD(_kern, OID_AUTO, mutex_spin_abs, CTLFLAG_RW, &MutexSpin, "Spin time in abs for acquiring a kernel mutex"); #else extern machine_timeout_t MutexSpin; SYSCTL_QUAD(_kern, OID_AUTO, mutex_spin_abs, CTLFLAG_RW, &MutexSpin, "Spin time in abs for acquiring a kernel mutex"); #endif extern uint64_t low_MutexSpin; extern int64_t high_MutexSpin; extern unsigned int real_ncpus; SYSCTL_QUAD(_kern, OID_AUTO, low_mutex_spin_abs, CTLFLAG_RW, &low_MutexSpin, "Low spin threshold in abs for acquiring a kernel mutex"); static int sysctl_high_mutex_spin_ns SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) int error; int64_t val = 0; int64_t res; /* Check if the user is writing to high_MutexSpin, or just reading it */ if (req->newptr) { error = SYSCTL_IN(req, &val, sizeof(val)); if (error || (val < 0 && val != -1)) { return error; } high_MutexSpin = val; } if (high_MutexSpin >= 0) { res = high_MutexSpin; } else { res = low_MutexSpin * real_ncpus; } return SYSCTL_OUT(req, &res, sizeof(res)); } SYSCTL_PROC(_kern, OID_AUTO, high_mutex_spin_abs, CTLFLAG_RW | CTLTYPE_QUAD, 0, 0, sysctl_high_mutex_spin_ns, "I", "High spin threshold in abs for acquiring a kernel mutex"); #if defined (__x86_64__) semaphore_t sysctl_test_panic_with_thread_sem; #pragma clang diagnostic push #pragma clang diagnostic ignored "-Winfinite-recursion" /* rdar://38801963 */ __attribute__((noreturn)) static void panic_thread_test_child_spin(void * arg, wait_result_t wres) { static int panic_thread_recurse_count = 5; if (panic_thread_recurse_count > 0) { panic_thread_recurse_count--; panic_thread_test_child_spin(arg, wres); } semaphore_signal(sysctl_test_panic_with_thread_sem); while (1) { ; } } #pragma clang diagnostic pop static void panic_thread_test_child_park(void * arg __unused, wait_result_t wres __unused) { int event; assert_wait(&event, THREAD_UNINT); semaphore_signal(sysctl_test_panic_with_thread_sem); thread_block(panic_thread_test_child_park); } static int sysctl_test_panic_with_thread SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int rval = 0; char str[16] = { '\0' }; thread_t child_thread = THREAD_NULL; rval = sysctl_handle_string(oidp, str, sizeof(str), req); if (rval != 0 || !req->newptr) { return EINVAL; } semaphore_create(kernel_task, &sysctl_test_panic_with_thread_sem, SYNC_POLICY_FIFO, 0); /* Create thread to spin or park in continuation */ if (strncmp("spin", str, strlen("spin")) == 0) { if (kernel_thread_start(panic_thread_test_child_spin, NULL, &child_thread) != KERN_SUCCESS) { semaphore_destroy(kernel_task, sysctl_test_panic_with_thread_sem); return EBUSY; } } else if (strncmp("continuation", str, strlen("continuation")) == 0) { if (kernel_thread_start(panic_thread_test_child_park, NULL, &child_thread) != KERN_SUCCESS) { semaphore_destroy(kernel_task, sysctl_test_panic_with_thread_sem); return EBUSY; } } else { semaphore_destroy(kernel_task, sysctl_test_panic_with_thread_sem); return EINVAL; } semaphore_wait(sysctl_test_panic_with_thread_sem); panic_with_thread_context(0, NULL, 0, child_thread, "testing panic_with_thread_context for thread %p", child_thread); /* Not reached */ return EINVAL; } SYSCTL_PROC(_kern, OID_AUTO, test_panic_with_thread, CTLFLAG_MASKED | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLFLAG_WR | CTLTYPE_STRING, 0, 0, sysctl_test_panic_with_thread, "A", "test panic flow for backtracing a different thread"); #endif /* defined (__x86_64__) */ static int sysctl_generate_file_permissions_guard_exception SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } generate_file_permissions_guard_exception(0, val); return 0; } SYSCTL_PROC(_kern, OID_AUTO, file_perm_guard_exception, CTLFLAG_WR | CTLFLAG_ANYBODY | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_generate_file_permissions_guard_exception, "I", "Test File Permission Guard exception"); #endif /* DEVELOPMENT || DEBUG */ extern const int copysize_limit_panic; static int sysctl_get_owned_vmobjects SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) /* validate */ if (req->newlen != sizeof(mach_port_name_t) || req->newptr == USER_ADDR_NULL || req->oldidx != 0 || req->newidx != 0 || req->p == NULL || (req->oldlen == 0 && req->oldptr != USER_ADDR_NULL)) { return EINVAL; } int error; mach_port_name_t task_port_name; task_t task; size_t buffer_size = (req->oldptr != USER_ADDR_NULL) ? req->oldlen : 0; vmobject_list_output_t buffer = NULL; size_t output_size; size_t entries; bool free_buffer = false; /* we have a "newptr" (for write) we get a task port name from the caller. */ error = SYSCTL_IN(req, &task_port_name, sizeof(mach_port_name_t)); if (error != 0) { goto sysctl_get_vmobject_list_exit; } task = port_name_to_task_read(task_port_name); if (task == TASK_NULL) { error = ESRCH; goto sysctl_get_vmobject_list_exit; } bool corpse = task_is_a_corpse(task); /* get the current size */ size_t max_size; task_get_owned_vmobjects(task, 0, NULL, &max_size, &entries); if (buffer_size && (buffer_size < sizeof(*buffer) + sizeof(vm_object_query_data_t))) { error = ENOMEM; goto sysctl_get_vmobject_list_deallocate_and_exit; } if (corpse == false) { /* copy the vmobjects and vmobject data out of the task */ if (buffer_size == 0) { output_size = max_size; } else { buffer_size = (buffer_size > max_size) ? max_size : buffer_size; buffer = (struct _vmobject_list_output_ *)kalloc_data(buffer_size, Z_WAITOK); if (!buffer) { error = ENOMEM; goto sysctl_get_vmobject_list_deallocate_and_exit; } free_buffer = true; task_get_owned_vmobjects(task, buffer_size, buffer, &output_size, &entries); } } else { vmobject_list_output_t list; task_get_corpse_vmobject_list(task, &list, &max_size); assert(buffer == NULL); /* copy corpse_vmobject_list to output buffer to avoid double copy */ if (buffer_size) { size_t temp_size; temp_size = buffer_size > max_size ? max_size : buffer_size; output_size = temp_size - sizeof(*buffer); /* whole multiple of vm_object_query_data_t */ output_size = (output_size / sizeof(vm_object_query_data_t)) * sizeof(vm_object_query_data_t) + sizeof(*buffer); buffer = list; } else { output_size = max_size; } } /* req->oldptr should be USER_ADDR_NULL if buffer == NULL and return the current size */ /* otherwise copy buffer to oldptr and return the bytes copied */ size_t num_copied, chunk_size; for (num_copied = 0, chunk_size = 0; num_copied < output_size; num_copied += chunk_size) { chunk_size = MIN(output_size - num_copied, copysize_limit_panic); error = SYSCTL_OUT(req, (char *)buffer + num_copied, chunk_size); if (error) { break; } } sysctl_get_vmobject_list_deallocate_and_exit: task_deallocate(task); sysctl_get_vmobject_list_exit: if (free_buffer) { kfree_data(buffer, buffer_size); } return error; } SYSCTL_PROC(_vm, OID_AUTO, get_owned_vmobjects, CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_WR | CTLFLAG_MASKED | CTLFLAG_KERN | CTLFLAG_LOCKED | CTLFLAG_ANYBODY, 0, 0, sysctl_get_owned_vmobjects, "A", "get owned vmobjects in task"); extern uint64_t num_static_scalable_counters; SYSCTL_QUAD(_kern, OID_AUTO, num_static_scalable_counters, CTLFLAG_RD | CTLFLAG_LOCKED, &num_static_scalable_counters, ""); #if SCHED_HYGIENE_DEBUG TUNABLE_DT(bool, sched_hygiene_nonspec_tb, "machine-timeouts", "nonspec-tb", "sched-hygiene-nonspec-tb", false, TUNABLE_DT_NONE); static SECURITY_READ_ONLY_LATE(int) sched_hygiene_debug_available = 1; #else static SECURITY_READ_ONLY_LATE(int) sched_hygiene_debug_available = 0; #endif /* SCHED_HYGIENE_DEBUG */ SYSCTL_INT(_debug, OID_AUTO, sched_hygiene_debug_available, CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, &sched_hygiene_debug_available, 0, ""); uuid_string_t trial_treatment_id; uuid_string_t trial_experiment_id; int trial_deployment_id = -1; SYSCTL_STRING(_kern, OID_AUTO, trial_treatment_id, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY | CTLFLAG_LEGACY_EXPERIMENT, trial_treatment_id, sizeof(trial_treatment_id), ""); SYSCTL_STRING(_kern, OID_AUTO, trial_experiment_id, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY | CTLFLAG_LEGACY_EXPERIMENT, trial_experiment_id, sizeof(trial_experiment_id), ""); SYSCTL_INT(_kern, OID_AUTO, trial_deployment_id, CTLFLAG_RW | CTLFLAG_LOCKED | CTLFLAG_ANYBODY | CTLFLAG_LEGACY_EXPERIMENT, &trial_deployment_id, 0, ""); #if (DEVELOPMENT || DEBUG) /* For unit testing setting factors & limits. */ unsigned int testing_experiment_factor; EXPERIMENT_FACTOR_LEGACY_UINT(_kern, testing_experiment_factor, &testing_experiment_factor, 5, 10, ""); static int32_t experiment_factor_test; EXPERIMENT_FACTOR_INT(test, &experiment_factor_test, 0, 32, "test factor"); #if MACH_ASSERT && __arm64__ /* rdar://149041040 */ extern unsigned int panic_on_jit_guard; EXPERIMENT_FACTOR_UINT(jitguard, &panic_on_jit_guard, 0, 7, "Panic on JIT guard failure"); #endif /* MACH_ASSERT && __arm64__ */ extern int exception_log_max_pid; SYSCTL_INT(_debug, OID_AUTO, exception_log_max_pid, CTLFLAG_RW | CTLFLAG_LOCKED, &exception_log_max_pid, 0, "Log exceptions for all processes up to this pid"); #endif /* (DEVELOPMENT || DEBUG) */ #if DEVELOPMENT || DEBUG static int unlink_kernelcore_sysctl SYSCTL_HANDLER_ARGS { if (!req->newptr) { return EINVAL; } void IOBSDLowSpaceUnlinkKernelCore(void); IOBSDLowSpaceUnlinkKernelCore(); return 0; } SYSCTL_PROC(_kern, OID_AUTO, unlink_kernelcore, CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, unlink_kernelcore_sysctl, "-", "unlink the kernelcore file"); typedef struct { uint64_t thread_id; pid_t pid; } thread_block_hint_args; extern uint32_t thread_get_block_hint(thread_t thread); static int sysctl_thread_block_hint SYSCTL_HANDLER_ARGS { int error; thread_block_hint_args args; uint32_t block_hint = 0; proc_t proc = PROC_NULL; task_t task = TASK_NULL; thread_t thread = THREAD_NULL; error = SYSCTL_IN(req, &args, sizeof(args)); if (error) { return error; } if (!args.pid || !args.thread_id) { return EINVAL; } /* Find the proc for the given PID */ proc = proc_find(args.pid); if (proc == PROC_NULL) { printf("couldn't find proc for pid %d\n", args.pid); return EINVAL; } /* Get the task from the proc */ task = proc_task(proc); if (task == TASK_NULL) { printf("couldn't find task for pid %d\n", args.pid); error = EINVAL; goto done; } /* Find the thread with the given thread ID */ thread = task_findtid(task, args.thread_id); if (thread == THREAD_NULL) { printf("couldn't find thread %llu in task for pid %d\n", args.thread_id, args.pid); error = EINVAL; goto done; } /* Get the block hint information using accessor functions */ block_hint = thread_get_block_hint(thread); printf("The block_hint is %d\n", block_hint); thread_deallocate(thread); /* Return the result */ error = SYSCTL_OUT(req, &block_hint, sizeof(block_hint)); done: proc_rele(proc); return error; } SYSCTL_PROC(_kern, OID_AUTO, thread_block_hint, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_ANYBODY | CTLFLAG_LOCKED | CTLFLAG_MASKED, 0, 0, &sysctl_thread_block_hint, "I", "Get thread block hint information"); /* Used for signaling in stackshot tests */ extern _Atomic uint64_t vm_stackshot_test_blocker_tid; SYSCTL_QUAD(_kern, OID_AUTO, stackshot_test_blocker_tid, CTLFLAG_RW | CTLFLAG_LOCKED, &vm_stackshot_test_blocker_tid, ""); #endif /* DEVELOPMENT || DEBUG */ #if CONFIG_IOTRACE #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wcast-qual" SYSCTL_INT(_debug, OID_AUTO, MMIOtrace, CTLFLAG_KERN | CTLFLAG_RW | CTLFLAG_LOCKED, (int *)&mmiotrace_enabled, 0, ""); #pragma clang diagnostic pop #endif /* CONFIG_IOTRACE */ static int sysctl_page_protection_type SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) int value = ml_page_protection_type(); return SYSCTL_OUT(req, &value, sizeof(value)); } SYSCTL_PROC(_kern, OID_AUTO, page_protection_type, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_page_protection_type, "I", "Type of page protection that the system supports"); #if HAS_SPTM_SYSCTL extern bool disarm_protected_io; extern bool disarm_protected_io_ever; static int sysctl_sptm_disarm_protected_io SYSCTL_HANDLER_ARGS { int error = 0; uint64_t old_disarm_protected_io = (uint64_t) disarm_protected_io; error = SYSCTL_OUT(req, &old_disarm_protected_io, sizeof(old_disarm_protected_io)); if (error) { return error; } uint64_t new_disarm_protected_io = old_disarm_protected_io; if (req->newptr) { error = SYSCTL_IN(req, &new_disarm_protected_io, sizeof(new_disarm_protected_io)); if (error || (new_disarm_protected_io == old_disarm_protected_io)) { return error; } const sptm_sysctl_setter_return_t sptm_error = sptm_sysctl( SPTM_SYSCTL_DISARM_PROTECTED_IO, SPTM_SYSCTL_SET, !!new_disarm_protected_io); if (SPTM_SYSCTL_SET_SUCCESS == sptm_error) { os_atomic_thread_fence(release); disarm_protected_io = !!new_disarm_protected_io; /* Latch that we've ever disarmed SPTM for debugging / coredump */ disarm_protected_io_ever = disarm_protected_io_ever || disarm_protected_io; } else { return EINVAL; } } return error; } SYSCTL_PROC(_kern, OID_AUTO, sptm_disarm_protected_io, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_disarm_protected_io, "Q", ""); /** * Usage of kern.sptm_sysctl_poke * * This sysctl provides a convenient way to trigger the "getter" handler of a * specified SPTM sysctl. With this sysctl, you can trigger arbitrary SPTM * code without modifying xnu source code. All you need to do is define a * new SPTM sysctl and implement its "getter". After that, you can write * the SPTM sysctl number to this sysctl to trigger it. */ static int sysctl_sptm_sysctl_poke SYSCTL_HANDLER_ARGS { int error = 0; /* Always read-as-zero. */ const uint64_t out = 0; error = SYSCTL_OUT(req, &out, sizeof(out)); if (error) { return error; } uint64_t selector; if (req->newptr) { error = SYSCTL_IN(req, &selector, sizeof(selector)); sptm_sysctl(selector, SPTM_SYSCTL_GET, 0); } return error; } SYSCTL_PROC(_kern, OID_AUTO, sptm_sysctl_poke, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_sysctl_poke, "Q", ""); #endif /* HAS_SPTM_SYSCTL */ #if CONFIG_SPTM && (DEVELOPMENT || DEBUG) /** * Sysctls to get SPTM allowed I/O ranges, pmap I/O ranges and I/O ranges by index. * Used by SEAR/LASER tools. */ static int sysctl_sptm_allowed_io_ranges SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) sptm_io_range_t io_range = { 0 }; unsigned int index = 0; int error = SYSCTL_IN(req, &index, sizeof(index)); if (error) { return error; } libsptm_error_t ret = sptm_get_info(INFO_SPTM_ALLOWED_IO_RANGES, index, &io_range); if (__improbable(ret != LIBSPTM_SUCCESS)) { return EINVAL; } return SYSCTL_OUT(req, &io_range, sizeof(io_range)); } SYSCTL_PROC(_kern, OID_AUTO, sptm_allowed_io_ranges, CTLTYPE_STRUCT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_allowed_io_ranges, "S,sptm_io_range_t", "SPTM allowed I/O ranges by index"); static int sysctl_sptm_allowed_io_ranges_count SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) unsigned int count = 0; libsptm_error_t ret = sptm_get_info(INFO_SPTM_ALLOWED_IO_RANGES_COUNT, 0, &count); if (__improbable(ret != LIBSPTM_SUCCESS)) { return EINVAL; } return SYSCTL_OUT(req, &count, sizeof(count)); } SYSCTL_PROC(_kern, OID_AUTO, sptm_allowed_io_ranges_count, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_allowed_io_ranges_count, "I", "SPTM allowed I/O ranges count"); static int sysctl_sptm_pmap_io_ranges SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) sptm_io_range_t io_range = { 0 }; unsigned int index = 0; int error = SYSCTL_IN(req, &index, sizeof(index)); if (error) { return error; } libsptm_error_t ret = sptm_get_info(INFO_SPTM_PMAP_IO_RANGES, index, &io_range); if (__improbable(ret != LIBSPTM_SUCCESS)) { return EINVAL; } return SYSCTL_OUT(req, &io_range, sizeof(io_range)); } SYSCTL_PROC(_kern, OID_AUTO, sptm_pmap_io_ranges, CTLTYPE_STRUCT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_pmap_io_ranges, "S,sptm_io_range_t", "SPTM pmap I/O ranges by index"); static int sysctl_sptm_pmap_io_ranges_count SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) unsigned int count = 0; libsptm_error_t ret = sptm_get_info(INFO_SPTM_PMAP_IO_RANGES_COUNT, 0, &count); if (__improbable(ret != LIBSPTM_SUCCESS)) { return EINVAL; } return SYSCTL_OUT(req, &count, sizeof(count)); } SYSCTL_PROC(_kern, OID_AUTO, sptm_pmap_io_ranges_count, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_pmap_io_ranges_count, "I", "SPTM pmap I/O ranges count"); /* Establish the `kern.sptm` sysctl namespace. */ SYSCTL_NODE(_kern, OID_AUTO, sptm, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "SPTM (Secure Page Table Monitor)"); /* Establish the `kern.sptm.event_counters` sysctl namespace. */ SYSCTL_NODE(_kern_sptm, OID_AUTO, event_counters, CTLFLAG_RW | CTLFLAG_LOCKED, 0, "SPTM event counters"); /** * The single sysctl handler function shared by all of the SPTM event counter sysctls. * * @param arg2 The `sptm_info_t` enum value corresponding to the SPTM event counter. * This value is bound at sysctl registration time. */ static int sysctl_handle_sptm_event_counter SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1) /* Overall count across all CPUs. */ uint64_t total_count = 0; /* Loop over all CPUs and accumulate counts. */ const int ncpus = ml_early_cpu_max_number() + 1; for (int cpu = 0; cpu < ncpus; cpu++) { /* Get count for this CPU. */ uint64_t count = 0; libsptm_error_t ret = sptm_get_info((sptm_info_t)arg2, cpu, &count); if (__improbable(ret != LIBSPTM_SUCCESS)) { return EINVAL; } /* Accumulate the count. */ total_count += count; } return SYSCTL_OUT(req, &total_count, sizeof(total_count)); } #define GENERATE_SPTM_EVNT_CNTR_SYSCTL_REGISTRATION(event_counter, description) \ SYSCTL_PROC(_kern_sptm_event_counters, OID_AUTO, event_counter, \ CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, \ NULL, SPTM_EVENT_COUNTER_TO_ENUM(event_counter), \ sysctl_handle_sptm_event_counter, "Q", description); /* Generate sysctl accessors for every SPTM event counter. */ FOREACH_SPTM_EVENT_COUNTER(GENERATE_SPTM_EVNT_CNTR_SYSCTL_REGISTRATION) static int sysctl_sptm_io_ranges SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) sptm_io_range_t io_range = { 0 }; unsigned int index = 0; int error = SYSCTL_IN(req, &index, sizeof(index)); if (error) { return error; } libsptm_error_t ret = sptm_get_info(INFO_SPTM_IO_RANGES, index, &io_range); if (__improbable(ret != LIBSPTM_SUCCESS)) { return EINVAL; } return SYSCTL_OUT(req, &io_range, sizeof(io_range)); } SYSCTL_PROC(_kern, OID_AUTO, sptm_io_ranges, CTLTYPE_STRUCT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_io_ranges, "S,sptm_io_range_t", "SPTM I/O ranges by index"); static int sysctl_sptm_io_ranges_count SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) unsigned int count = 0; libsptm_error_t ret = sptm_get_info(INFO_SPTM_IO_RANGES_COUNT, 0, &count); if (__improbable(ret != LIBSPTM_SUCCESS)) { return EINVAL; } return SYSCTL_OUT(req, &count, sizeof(count)); } SYSCTL_PROC(_kern, OID_AUTO, sptm_io_ranges_count, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_sptm_io_ranges_count, "I", "SPTM I/O ranges count"); #endif /* CONFIG_SPTM && (DEVELOPMENT || DEBUG) */ #if __ARM64_PMAP_SUBPAGE_L1__ && CONFIG_SPTM extern bool surt_ready; static int sysctl_surt_ready SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) unsigned int surt_ready_uint = (unsigned int)surt_ready; return SYSCTL_OUT(req, &surt_ready_uint, sizeof(surt_ready_uint)); } SYSCTL_PROC(_kern, OID_AUTO, surt_ready, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_surt_ready, "I", "SURT system readiness"); #endif /* __ARM64_PMAP_SUBPAGE_L1__ && CONFIG_SPTM */ #if __arm64__ && (DEBUG || DEVELOPMENT) extern unsigned int pmap_wcrt_on_non_dram_count_get(void); static int sysctl_pmap_wcrt_on_non_dram_count SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) unsigned int count = pmap_wcrt_on_non_dram_count_get(); return SYSCTL_OUT(req, &count, sizeof(count)); } SYSCTL_PROC(_kern, OID_AUTO, pmap_wcrt_on_non_dram_count, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_pmap_wcrt_on_non_dram_count, "I", "pmap WC/RT mapping request on non-DRAM count"); #endif /* __arm64__ && (DEBUG || DEVELOPMENT) */ TUNABLE_DT(int, gpu_pmem_selector, "defaults", "kern.gpu_pmem_selector", "gpu-pmem-selector", 0, TUNABLE_DT_NONE); #if CONFIG_EXCLAVES static int sysctl_task_conclave SYSCTL_HANDLER_ARGS { extern const char *exclaves_resource_name(void *); #pragma unused(arg2) void *conclave = task_get_conclave(current_task()); if (conclave != NULL) { const char *name = exclaves_resource_name(conclave); assert3u(strlen(name), >, 0); /* * This is a RO operation already and the string is never * written to. */ #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wcast-qual" return sysctl_handle_string(oidp, (char *)name, 0, req); #pragma clang diagnostic pop } return sysctl_handle_string(oidp, arg1, MAXCONCLAVENAME, req); } SYSCTL_PROC(_kern, OID_AUTO, task_conclave, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, "", 0, sysctl_task_conclave, "A", "Conclave string for the task"); void task_set_conclave_untaintable(task_t task); static int sysctl_task_conclave_untaintable SYSCTL_HANDLER_ARGS { #pragma unused(arg1, arg2) int error, val = 0; error = sysctl_handle_int(oidp, &val, 0, req); if (error || val == 0) { return error; } task_set_conclave_untaintable(current_task()); return 0; } SYSCTL_PROC(_kern, OID_AUTO, task_conclave_untaintable, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, "", 0, sysctl_task_conclave_untaintable, "A", "Task could not be tainted by talking to conclaves"); extern exclaves_requirement_t exclaves_relaxed_requirements; SYSCTL_QUAD(_kern, OID_AUTO, exclaves_relaxed_requirements, CTLFLAG_KERN | CTLFLAG_RD | CTLFLAG_LOCKED, &exclaves_relaxed_requirements, "Exclaves requirements which have been relaxed"); #endif /* CONFIG_EXCLAVES */ #if (DEVELOPMENT || DEBUG) SYSCTL_INT(_kern, OID_AUTO, gpu_pmem_selector, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN, &gpu_pmem_selector, 0, "GPU wire down limit selector"); #else /* !(DEVELOPMENT || DEBUG) */ SYSCTL_INT(_kern, OID_AUTO, gpu_pmem_selector, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED | CTLFLAG_KERN | CTLFLAG_MASKED, &gpu_pmem_selector, 0, "GPU wire down limit selector"); #endif /* (DEVELOPMENT || DEBUG) */ static int sysctl_exclaves_status SYSCTL_HANDLER_ARGS { int value = exclaves_get_status(); return sysctl_io_number(req, value, sizeof(value), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, exclaves_status, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_exclaves_status, "I", "Running status of Exclaves"); static int sysctl_exclaves_boot_stage SYSCTL_HANDLER_ARGS { int value = exclaves_get_boot_stage(); return sysctl_io_number(req, value, sizeof(value), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, exclaves_boot_stage, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_exclaves_boot_stage, "I", "Boot stage of Exclaves"); #if CONFIG_EXCLAVES && (DEVELOPMENT || DEBUG) extern unsigned int exclaves_debug; SYSCTL_UINT(_kern, OID_AUTO, exclaves_debug, CTLFLAG_RW | CTLFLAG_LOCKED, &exclaves_debug, 0, "Exclaves debug flags"); static int sysctl_exclaves_inspection_status SYSCTL_HANDLER_ARGS { #pragma unused(oidp, arg1, arg2) int value = (int)exclaves_inspection_is_initialized(); return sysctl_io_number(req, value, sizeof(value), NULL, NULL); } SYSCTL_PROC(_kern, OID_AUTO, exclaves_inspection_status, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_exclaves_inspection_status, "I", "Exclaves debug inspection status"); #endif /* CONFIG_EXCLAVES && (DEVELOPMENT || DEBUG) */ #if (DEBUG || DEVELOPMENT) extern uint32_t disable_vm_sanitize_telemetry; SYSCTL_UINT(_debug, OID_AUTO, disable_vm_sanitize_telemetry, CTLFLAG_RW | CTLFLAG_LOCKED /*| CTLFLAG_MASKED*/, &disable_vm_sanitize_telemetry, 0, "disable VM API sanitization telemetry"); #endif #define kReadUserspaceRebootInfoEntitlement "com.apple.private.kernel.userspacereboot-info-read-only" static int _sysctl_userspacereboot_info(struct sysctl_req *req, void *ptr, size_t ptr_size) { if (req->newptr != 0) { /* initproc is the only process that can write to these sysctls */ if (proc_getpid(req->p) != 1) { return EPERM; } return SYSCTL_IN(req, ptr, ptr_size); } else { /* A read entitlement is required to read these sysctls */ if (!IOCurrentTaskHasEntitlement(kReadUserspaceRebootInfoEntitlement)) { return EPERM; } return SYSCTL_OUT(req, ptr, ptr_size); } } static int sysctl_userspacereboottime(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return _sysctl_userspacereboot_info(req, &userspacereboottime, sizeof(userspacereboottime)); } static int sysctl_userspacerebootpurpose(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { return _sysctl_userspacereboot_info(req, &userspacerebootpurpose, sizeof(userspacerebootpurpose)); } SYSCTL_PROC(_kern, OID_AUTO, userspacereboottime, CTLTYPE_QUAD | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_userspacereboottime, "Q", ""); SYSCTL_PROC(_kern, OID_AUTO, userspacerebootpurpose, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_LOCKED, 0, 0, sysctl_userspacerebootpurpose, "I", ""); #if XNU_TARGET_OS_IOS static LCK_GRP_DECLARE(erm_config_lock_grp, "ERM sysctl"); static LCK_RW_DECLARE(erm_config_lock, &erm_config_lock_grp); #define ERM_CONFIG_SYSCTL_WRITE_ENTITLEMENT "com.apple.private.security-research-device.extended-research-mode" #define ERM_CONFIG_SYSCTL_MAX_SIZE PAGE_SIZE // This sysctl handler is only registered when Extended Research Mode (ERM) is active. static int sysctl_user_extended_research_mode_config_handler(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { // Pointer for the dynamically allocated buffer static void *extended_research_mode_config_data = NULL; // Current size of the valid data stored in the buffer static size_t extended_research_mode_config_current_size = 0; // Handle Read request (user wants to read the current config, before it is overwritten) if (req->oldptr != USER_ADDR_NULL) { int error = 0; lck_rw_lock_shared(&erm_config_lock); if (req->oldlen < extended_research_mode_config_current_size) { error = ENOMEM; } else { if (extended_research_mode_config_current_size > 0) { error = copyout(extended_research_mode_config_data, req->oldptr, extended_research_mode_config_current_size); } } // In all cases, report the total size of the currently stored config back to the user, req->oldlen = extended_research_mode_config_current_size; req->oldidx = req->oldlen; lck_rw_unlock_shared(&erm_config_lock); if (error != 0) { return error; } } else { // User just want to know the current buffer size. // All accesses to extended_research_mode_config* variables are expected // to be done under erm_config_lock. lck_rw_lock_shared(&erm_config_lock); req->oldidx = extended_research_mode_config_current_size; lck_rw_unlock_shared(&erm_config_lock); } // Handle Write request (new data provided by user) if (req->newptr != USER_ADDR_NULL) { if (!IOTaskHasEntitlement(proc_task(req->p), ERM_CONFIG_SYSCTL_WRITE_ENTITLEMENT)) { return EPERM; } size_t requested_len = req->newlen; if (requested_len > ERM_CONFIG_SYSCTL_MAX_SIZE) { // We ensure the config provided by user-space is not too big return EINVAL; } // Allocate a new buffer for the incoming data void *new_buffer = (void *)kalloc_data(requested_len, Z_WAITOK | Z_ZERO); if (new_buffer == NULL) { return ENOMEM; // Allocation failed } // Copy data from user space into the newly allocated buffer int error = copyin(req->newptr, new_buffer, requested_len); if (error == 0) { // Success: Replace the old buffer with the new one lck_rw_lock_exclusive(&erm_config_lock); // Backup old buffer info for freeing it in a second step void *old_buffer_to_free = extended_research_mode_config_data; size_t old_buffer_size = extended_research_mode_config_current_size; // Point to the new buffer and update size extended_research_mode_config_data = new_buffer; extended_research_mode_config_current_size = requested_len; lck_rw_unlock_exclusive(&erm_config_lock); new_buffer = NULL; // transferred to the static pointer // Previous buffer is not referenced anymore, good to be deleted. kfree_data(old_buffer_to_free, old_buffer_size); } else { // Copyin failed, free the buffer we just allocated and keep the old data and size intact kfree_data(new_buffer, requested_len); return error; } } return 0; } // We don't register this sysctl handler automatically , but rather only register it only if the extended // research mode is active. SYSCTL_PROC(_user, // Parent node structure (_kern) OID_AUTO, // Automatically assign OID extended_research_mode_config, // Name of the node CTLFLAG_NOAUTO | // We will register this sysctl on our own CTLTYPE_OPAQUE | // Type: Opaque binary data CTLFLAG_WR | // Allow both read and write CTLFLAG_ANYBODY | // No user filtering CTLFLAG_LOCKED, // The handler manages its own locking. NULL, // arg1 (not used) 0, // arg2 (not used) &sysctl_user_extended_research_mode_config_handler, "-", // don't print the content (as it is a blob) "Configuration blob for Extended Research Mode"); // This function is defined in kern_codesigning.c but don't worth include the whole .h just for it. bool extended_research_mode_state(void); // Only register the research_mode_config sysctl if Extended Research Mode is active __startup_func static void extended_research_mode_config_sysctl_startup(void) { if (__improbable(extended_research_mode_state())) { // Register the sysctl handler sysctl_register_oid_early(&sysctl__user_extended_research_mode_config); } } STARTUP(SYSCTL, STARTUP_RANK_MIDDLE, extended_research_mode_config_sysctl_startup); #endif /* XNU_TARGET_OS_IOS */ #if DEBUG || DEVELOPMENT SCALABLE_COUNTER_DEFINE(mach_eventlink_handoff_success_count); SYSCTL_SCALABLE_COUNTER(_kern, mach_eventlink_handoff_success_count, mach_eventlink_handoff_success_count, "Number of successful handoffs"); #endif /* DEBUG || DEVELOPMENT*/ |