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--- xnu/xnu-12377.101.15/bsd/sys/proc_internal.h
+++ xnu/xnu-792/bsd/sys/proc_internal.h
@@ -1,29 +1,23 @@
/*
- * Copyright (c) 2000-2018 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
+ * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License"). You may not use this file except in compliance with the
+ * License. Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ *
+ * This 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@
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
/*-
@@ -65,196 +59,48 @@
*
* @(#)proc_internal.h 8.15 (Berkeley) 5/19/95
*/
-/*
- * 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.
- */
#ifndef _SYS_PROC_INTERNAL_H_
-#define _SYS_PROC_INTERNAL_H_
-
-#include <kern/smr.h>
-#include <kern/kalloc.h>
-#include <libkern/OSAtomic.h>
-#include <sys/cdefs.h>
-#include <sys/filedesc.h>
+#define _SYS_PROC_INTERNAL_H_
+
#include <sys/proc.h>
-#include <sys/proc_ro.h>
-#include <sys/signalvar.h>
-#include <mach/resource_monitors.h> // command/proc_name_t
-
__BEGIN_DECLS
#include <kern/locks.h>
-#if PSYNCH
-#include <kern/thread_call.h>
-#endif /* PSYNCH */
__END_DECLS
-#if DEBUG
-#define __PROC_INTERNAL_DEBUG 1
-#endif
-
-/*
- * The short form for various locks that protect fields in the data structures.
- * PL = Process Lock
- * PGL = Process Group Lock
- * PUCL = Process User Credentials Lock
- * PSL = Process Spin Lock
- * LL = List Lock
- * SL = Session Lock
- * TTYL = TTY Lock
- *
- * C = constant/static
- */
-struct label;
-
-/*
- * Flags kept in the low bits of `struct session::s_refcount`
- */
-__options_decl(session_ref_bits_t, uint32_t, {
- S_DEFAULT = 0x00,
- S_NOCTTY = 0x01, /* Do not associate controlling tty */
- S_CTTYREF = 0x02, /* vnode ref taken by cttyopen */
-});
-#define SESSION_REF_BITS 4 /* 2 is enough, 4 is easier in hex */
-#define SESSION_REF_MASK ((1u << PGRP_REF_BITS) - 1)
-
-#define SESSION_NULL ((struct session *)NULL)
-
-/*!
- * @struct session
- *
- * @brief
- * Structure to keep track of process sessions
- *
- * @discussion
- * Sessions hang (with +1's) from:
- * - process groups (@c pgrp::pg_session)
- * - ttys (@c tty::t_session)
- *
- * Lock ordering: TTYL > LL > SL
- */
-struct session {
- lck_mtx_t s_mlock; /* session lock */
- LIST_ENTRY(session) s_hash; /* (LL) hash linkage */
- struct proc *s_leader; /* (C) session leader */
- struct vnode *s_ttyvp; /* (SL) Vnode of controlling terminal */
- struct tty *s_ttyp; /* (SL) Controlling terminal */
- uint32_t s_ttyvid; /* (SL) Vnode id of the controlling terminal */
- pid_t s_ttypgrpid; /* (SL) tty's pgrp id */
- dev_t _Atomic s_ttydev; /* (SL) tty's device */
- pid_t s_sid; /* (C) Session ID */
- os_ref_atomic_t s_refcount;
- char s_login[MAXLOGNAME]; /* (SL) Setlogin() name */
+/*
+ * One structure allocated per session.
+ */
+struct session {
+ int s_count; /* Ref cnt; pgrps in session. */
+ struct proc *s_leader; /* Session leader. */
+ struct vnode *s_ttyvp; /* Vnode of controlling terminal. */
+ struct tty *s_ttyp; /* Controlling terminal. */
+ pid_t s_sid; /* Session ID */
+ char s_login[MAXLOGNAME]; /* Setlogin() name. */
};
-
-/*
- * Flags for pg_refcnt
- */
-__options_decl(pggrp_ref_bits_t, uint32_t, {
- PGRP_REF_NONE = 0x00,
- PGRP_REF_EMPTY = 0x01, /* the process group has no members */
-});
-#define PGRP_REF_BITS 1
-#define PGRP_REF_MASK ((1u << PGRP_REF_BITS) - 1)
-
-#define PGRP_NULL ((struct pgrp *)NULL)
-
-/*!
- * @struct pgrp
- *
- * @abstract
- * Describes a process group membership.
- *
- * @discussion
- * <b>locking rules</b>
- *
- * Process groups have a static ID (@c pg_id) and session (@c pg_session),
- * and groups hold a reference on their session.
- *
- * Process group membership is protected by the @c pgrp_lock().
- *
- * Lock ordering: TTYL > LL > PGL
- *
- * <b>lifetime</b>
- * Process groups are refcounted, with a packed bit that tracks whether
- * the group is orphaned (has no members), which prevents it
- * from being looked up.
- *
- * Process groups are retired through @c smr_proc_task_call().
- *
- * Process groups are hashed in a global hash table that can be consulted
- * while holding the @c proc_list_lock() with @c pghash_find_locked()
- * or using hazard pointers with @c pgrp_find().
- */
-struct pgrp {
- union {
- lck_mtx_t pg_mlock; /* process group lock (PGL) */
- struct smr_node pg_smr_node;
- };
- struct smrq_slink pg_hash; /* hash chain (PLL) */
- LIST_HEAD(, proc) pg_members; /* group members (PGL) */
- struct session *pg_session; /* session (static) */
- pid_t pg_id; /* group ID (static) */
- int pg_jobc; /* # procs qualifying pgrp for job control (PGL) */
- os_ref_atomic_t pg_refcount;
- os_ref_atomic_t pg_hashref;
+/*
+ * One structure allocated per process group.
+ */
+struct pgrp {
+ LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */
+ LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members. */
+ struct session *pg_session; /* Pointer to session. */
+ pid_t pg_id; /* Pgrp id. */
+ int pg_jobc; /* # procs qualifying pgrp for job control */
};
-
-__options_decl(proc_ref_bits_t, uint32_t, {
- P_REF_NONE = 0x00u,
- P_REF_NEW = 0x01u, /* the proc is being initialized */
- P_REF_DEAD = 0x02u, /* the proc is becoming a zombie */
- P_REF_WILL_EXEC = 0x04u, /* see proc_refdrain_will_exec() */
- P_REF_IN_EXEC = 0x08u, /* see proc_refdrain_will_exec() */
- P_REF_DRAINING = 0x10u, /* someone is in proc_refdrain() */
- P_REF_SHADOW = 0x20u, /* the proc is shadow proc in exec */
- P_REF_PROC_HOLD = 0x40u, /* the proc has ref on the proc task combined struct */
- P_REF_TASK_HOLD = 0x80u, /* the task has ref on the proc task combined struct */
-});
-#define P_REF_BITS 8
-#define P_REF_MASK ((1u << P_REF_BITS) - 1)
-
-/*
- * Kernel signal definitions and data structures,
- * not exported to user programs.
- */
-struct sigacts;
-
-/*
- * Process signal actions and state, needed only within the process
- * (not necessarily resident).
- */
-struct sigacts {
- user_addr_t ps_sigact[NSIG]; /* disposition of signals */
- user_addr_t ps_trampact[NSIG]; /* disposition of signals */
- sigset_t ps_catchmask[NSIG]; /* signals to be blocked */
- sigset_t ps_sigonstack; /* signals to take on sigstack */
- sigset_t ps_sigintr; /* signals that interrupt syscalls */
- sigset_t ps_sigreset; /* signals that reset when caught */
- sigset_t ps_signodefer; /* signals not masked while handled */
- sigset_t ps_siginfo; /* signals that want SA_SIGINFO args */
- sigset_t ps_oldmask; /* saved mask from before sigpause */
- _Atomic uint32_t ps_sigreturn_validation; /* sigreturn argument validation state */
- int ps_flags; /* signal flags, below */
- int ps_sig; /* for core dump/debugger XXX */
- int ps_code; /* for core dump/debugger XXX */
- int ps_addr; /* for core dump/debugger XXX */
-};
-
-#define PROC_NULL ((struct proc *)NULL)
-
-/*!
- * @struct proc
- *
- * @brief
+struct proc;
+
+#define PROC_NULL (struct proc *)0;
+
+#define p_session p_pgrp->pg_session
+#define p_pgid p_pgrp->pg_id
+
+/*
* Description of a process.
*
- * @discussion
* This structure contains the information needed to manage a thread of
* control, known in UN*X as a process; it has references to substructures
* containing descriptions of things that the process uses, but may share
@@ -262,891 +108,262 @@
* are always addressible except for those marked "(PROC ONLY)" below,
* which might be addressible only on a processor on which the process
* is running.
- *
- * The lifetime of a @c proc struct begins from forkproc() and ends at
- * proc_free(). Do not modify the @c proc struct or rely on its fields
- * being properly initialized before forkproc(). For corpses, forkproc()
- * is not called and the @c proc struct is never initialized.
- */
-struct proc {
- union {
- LIST_ENTRY(proc) p_list; /* List of all processes. */
- struct smr_node p_smr_node;
- };
- struct proc * XNU_PTRAUTH_SIGNED_PTR("proc.p_pptr") p_pptr; /* Pointer to parent process.(LL) */
- proc_ro_t p_proc_ro;
- pid_t p_ppid; /* process's parent pid number */
- pid_t p_pgrpid; /* process group id of the process (LL)*/
- uid_t p_uid;
- gid_t p_gid;
- uid_t p_ruid;
- gid_t p_rgid;
- uid_t p_svuid;
- gid_t p_svgid;
- pid_t p_sessionid;
- uint64_t p_puniqueid; /* parent's unique ID - set on fork/spawn, doesn't change if reparented. */
-
- lck_mtx_t p_mlock; /* mutex lock for proc */
- pid_t p_pid; /* Process identifier for proc_find. (static)*/
- char p_stat; /* S* process status. (PL)*/
- char p_shutdownstate;
- char p_kdebug; /* P_KDEBUG eq (CC)*/
- char p_btrace; /* P_BTRACE eq (CC)*/
-
- LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp (PGL) */
- LIST_ENTRY(proc) p_sibling; /* List of sibling processes (LL)*/
- LIST_HEAD(, proc) p_children; /* Pointer to list of children (LL)*/
- TAILQ_HEAD(, uthread) p_uthlist; /* List of uthreads (PL) */
-
- struct smrq_slink p_hash; /* Hash chain (LL)*/
-
-#if CONFIG_PERSONAS
- struct persona *p_persona;
- LIST_ENTRY(proc) p_persona_list;
-#endif
-
- lck_mtx_t p_ucred_mlock; /* mutex lock to protect p_ucred */
-#if CONFIG_AUDIT
- lck_mtx_t p_audit_mlock; /* mutex lock to protect audit sessions */
-#endif /* CONFIG_AUDIT */
+ */
+struct proc {
+ LIST_ENTRY(proc) p_list; /* List of all processes. */
/* substructures: */
- struct filedesc p_fd; /* open files structure */
- struct pstats *p_stats; /* Accounting/statistics (PL) */
- SMR_POINTER(struct plimit *) p_limit;/* Process limits (PL) */
- SMR_POINTER(struct pgrp *XNU_PTRAUTH_SIGNED_PTR("proc.p_pgrp")) p_pgrp; /* Pointer to process group. (LL) */
-
- struct sigacts p_sigacts;
- lck_spin_t p_slock; /* spin lock for itimer/profil protection */
-
- int p_siglist; /* signals captured back from threads */
- unsigned int p_flag; /* P_* flags. (atomic bit ops) */
- unsigned int p_lflag; /* local flags (PL) */
- unsigned int p_listflag; /* list flags (LL) */
- unsigned int p_ladvflag; /* local adv flags (atomic) */
- os_ref_atomic_t p_refcount; /* number of outstanding users */
- os_ref_atomic_t p_waitref; /* number of users pending transition */
- int p_childrencnt; /* children holding ref on parent (LL) */
- int p_parentref; /* children lookup ref on parent (LL) */
- pid_t p_oppid; /* Save parent pid during ptrace. XXX */
- u_int p_xstat; /* Exit status for wait; also stop signal. */
- int p_aio_total_count; /* all allocated AIO requests for this proc */
-
-#ifdef _PROC_HAS_SCHEDINFO_
- /* may need cleanup, not used */
- u_int p_estcpu; /* Time averaged value of p_cpticks.(used by aio and proc_comapre) */
- fixpt_t p_pctcpu; /* %cpu for this process during p_swtime (used by aio)*/
- u_int p_slptime; /* used by proc_compare */
-#endif /* _PROC_HAS_SCHEDINFO_ */
-
- struct itimerval p_realtimer; /* Alarm timer. (PSL) */
- struct timeval p_rtime; /* Real time.(PSL) */
- struct itimerval p_vtimer_user; /* Virtual timers.(PSL) */
- struct itimerval p_vtimer_prof; /* (PSL) */
-
- struct timeval p_rlim_cpu; /* Remaining rlim cpu value.(PSL) */
- int p_debugger; /* NU 1: can exec set-bit programs if suser */
- boolean_t sigwait; /* indication to suspend (PL) */
- void *sigwait_thread; /* 'thread' holding sigwait(PL) */
- void *exit_thread; /* Which thread is exiting(PL) */
- /* Following fields are info from SIGCHLD (PL) */
- pid_t si_pid; /* (PL) */
- u_int si_status; /* (PL) */
- u_int si_code; /* (PL) */
- uid_t si_uid; /* (PL) */
-
- void * vm_shm; /* (SYSV SHM Lock) for sysV shared memory */
- int p_ractive;
- /* cached proc-specific data required for corpse inspection */
- pid_t p_responsible_pid; /* pid responsible for this process */
-
-#if CONFIG_DTRACE
- int p_dtrace_probes; /* (PL) are there probes for this proc? */
- u_int p_dtrace_count; /* (sprlock) number of DTrace tracepoints */
- uint8_t p_dtrace_stop; /* indicates a DTrace-desired stop */
- user_addr_t p_dtrace_argv; /* (write once, read only after that) */
- user_addr_t p_dtrace_envp; /* (write once, read only after that) */
- lck_mtx_t p_dtrace_sprlock; /* sun proc lock emulation */
- struct dtrace_ptss_page* p_dtrace_ptss_pages; /* (sprlock) list of user ptss pages */
- struct dtrace_ptss_page_entry* p_dtrace_ptss_free_list; /* (atomic) list of individual ptss entries */
- struct dtrace_helpers* p_dtrace_helpers; /* (dtrace_lock) DTrace per-proc private */
- struct dof_ioctl_data* p_dtrace_lazy_dofs; /* (sprlock) unloaded dof_helper_t's */
-#endif /* CONFIG_DTRACE */
-
- __xnu_struct_group(proc_forkcopy_data, p_forkcopy, {
- u_int p_argslen; /* Length of process arguments. */
- int p_argc; /* saved argc for sysctl_procargs() */
- user_addr_t user_stack; /* where user stack was allocated */
- struct vnode * XNU_PTRAUTH_SIGNED_PTR("proc.p_textvp") p_textvp; /* Vnode of executable. */
- off_t p_textoff; /* offset in executable vnode */
-
- sigset_t p_sigmask; /* DEPRECATED */
- sigset_t p_sigignore; /* Signals being ignored. (PL) */
- sigset_t p_sigcatch; /* Signals being caught by user.(PL) */
- sigset_t p_workq_allow_sigmask; /* Signals allowed for workq threads. Updates protected by proc_lock. */
-
- u_char p_priority; /* (NU) Process priority. */
- u_char p_resv0; /* (NU) User-priority based on p_cpu and p_nice. */
- char p_nice; /* Process "nice" value.(PL) */
- u_char p_resv1; /* (NU) User-priority based on p_cpu and p_nice. */
-
- // types currently in sys/param.h
- command_t p_comm;
- proc_name_t p_name; /* can be changed by the process */
- uint8_t p_xhighbits; /* Stores the top byte of exit status to avoid truncation*/
- pid_t p_contproc; /* last PID to send us a SIGCONT (PL) */
-
- uint32_t p_pcaction; /* action for process control on starvation */
- uint8_t p_uuid[16]; /* from LC_UUID load command */
-
- uint8_t p_responsible_uuid[16]; /* UUID of pid responsible for this process */
-
- /*
- * CPU type and subtype of binary slice executed in
- * this process. Protected by proc lock.
- */
- cpu_type_t p_cputype;
- cpu_subtype_t p_cpusubtype;
- });
-
- TAILQ_HEAD(, aio_workq_entry ) p_aio_activeq; /* active async IO requests */
- TAILQ_HEAD(, aio_workq_entry ) p_aio_doneq; /* completed async IO requests */
-
- struct klist p_klist; /* knote list (PL ?)*/
-
- struct rusage_superset *p_ru; /* Exit information. (PL) */
- thread_t p_signalholder;
- thread_t p_transholder;
- int p_sigwaitcnt;
- /* DEPRECATE following field */
- u_short p_acflag; /* Accounting flags. */
- volatile u_short p_vfs_iopolicy; /* VFS iopolicy flags. (atomic bit ops) */
-
- user_addr_t p_threadstart; /* pthread start fn */
- user_addr_t p_wqthread; /* pthread workqueue fn */
- int p_pthsize; /* pthread size */
- uint32_t p_pth_tsd_offset; /* offset from pthread_t to TSD for new threads */
- user_addr_t p_stack_addr_hint; /* stack allocation hint for wq threads */
- struct workqueue *_Atomic p_wqptr; /* workq ptr */
- struct workq_aio_s *_Atomic p_aio_wqptr; /* aio_workq ptr */
-
-
- struct timeval p_start; /* starting time */
- void * p_rcall;
- void * p_pthhash; /* pthread waitqueue hash */
- volatile uint64_t was_throttled __attribute__((aligned(8))); /* Counter for number of throttled I/Os */
- volatile uint64_t did_throttle __attribute__((aligned(8))); /* Counter for number of I/Os this proc throttled */
-
-#if DIAGNOSTIC
+ struct ucred *p_ucred; /* Process owner's identity. */
+ struct filedesc *p_fd; /* Ptr to open files structure. */
+ struct pstats *p_stats; /* Accounting/statistics (PROC ONLY). */
+ struct plimit *p_limit; /* Process limits. */
+ struct sigacts *p_sigacts; /* Signal actions, state (PROC ONLY). */
+
+#define p_rlimit p_limit->pl_rlimit
+
+ int p_flag; /* P_* flags. */
+ char p_stat; /* S* process status. */
+ char p_shutdownstate;
+ char p_pad1[2];
+
+ pid_t p_pid; /* Process identifier. */
+ LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */
+ struct proc *p_pptr; /* Pointer to parent process. */
+ LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */
+ LIST_HEAD(, proc) p_children; /* Pointer to list of children. */
+
+/* The following fields are all zeroed upon creation in fork. */
+#define p_startzero p_oppid
+
+ pid_t p_oppid; /* Save parent pid during ptrace. XXX */
+ int p_dupfd; /* Sideways return value from fdopen. XXX */
+
+ /* scheduling */
+ u_int p_estcpu; /* Time averaged value of p_cpticks. */
+ int p_cpticks; /* Ticks of cpu time. */
+ fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */
+ void *p_wchan; /* Sleep address. */
+ char *p_wmesg; /* Reason for sleep. */
+ u_int p_swtime; /* DEPRECATED (Time swapped in or out.) */
+#define p_argslen p_swtime /* Length of process arguments. */
+ u_int p_slptime; /* Time since last blocked. */
+
+ struct itimerval p_realtimer; /* Alarm timer. */
+ struct timeval p_rtime; /* Real time. */
+ u_quad_t p_uticks; /* Statclock hits in user mode. */
+ u_quad_t p_sticks; /* Statclock hits in system mode. */
+ u_quad_t p_iticks; /* Statclock hits processing intr. */
+
+ int p_traceflag; /* Kernel trace points. */
+ struct vnode *p_tracep; /* Trace to vnode. */
+
+ sigset_t p_siglist; /* DEPRECATED. */
+
+ struct vnode *p_textvp; /* Vnode of executable. */
+
+/* End area that is zeroed on creation. */
+#define p_endzero p_hash.le_next
+
+ /*
+ * Not copied, not zero'ed.
+ * Belongs after p_pid, but here to avoid shifting proc elements.
+ */
+ LIST_ENTRY(proc) p_hash; /* Hash chain. */
+ TAILQ_HEAD( ,eventqelt) p_evlist;
+
+/* The following fields are all copied upon creation in fork. */
+#define p_startcopy p_sigmask
+
+ sigset_t p_sigmask; /* DEPRECATED */
+ sigset_t p_sigignore; /* Signals being ignored. */
+ sigset_t p_sigcatch; /* Signals being caught by user. */
+
+ u_char p_priority; /* Process priority. */
+ u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */
+ char p_nice; /* Process "nice" value. */
+ char p_comm[MAXCOMLEN+1];
+
+ struct pgrp *p_pgrp; /* Pointer to process group. */
+
+/* End area that is copied on creation. */
+#define p_endcopy p_xstat
+
+ u_short p_xstat; /* Exit status for wait; also stop signal. */
+ u_short p_acflag; /* Accounting flags. */
+ struct rusage *p_ru; /* Exit information. XXX */
+
+ int p_debugger; /* 1: can exec set-bit programs if suser */
+
+ void *task; /* corresponding task */
+ void *sigwait_thread; /* 'thread' holding sigwait */
+ char signal_lock[72];
+ boolean_t sigwait; /* indication to suspend */
+ void *exit_thread; /* Which thread is exiting? */
+ user_addr_t user_stack; /* where user stack was allocated */
+ void * exitarg; /* exit arg for proc terminate */
+ void * vm_shm; /* for sysV shared memory */
+ int p_argc; /* saved argc for sysctl_procargs() */
+ int p_vforkcnt; /* number of outstanding vforks */
+ void * p_vforkact; /* activation running this vfork proc */
+ TAILQ_HEAD( , uthread) p_uthlist; /* List of uthreads */
+ /* Following fields are info from SIGCHLD */
+ pid_t si_pid;
+ u_short si_status;
+ u_short si_code;
+ uid_t si_uid;
+ TAILQ_HEAD( , aio_workq_entry ) aio_activeq; /* active async IO requests */
+ int aio_active_count; /* entries on aio_activeq */
+ TAILQ_HEAD( , aio_workq_entry ) aio_doneq; /* completed async IO requests */
+ int aio_done_count; /* entries on aio_doneq */
+
+ struct klist p_klist; /* knote list */
+ lck_mtx_t p_mlock; /* proc lock to protect evques */
+ lck_mtx_t p_fdmlock; /* proc lock to protect evques */
unsigned int p_fdlock_pc[4];
unsigned int p_fdunlock_pc[4];
+ int p_fpdrainwait;
+ int p_lflag; /* local flags */
+#if DIAGNOSTIC
#if SIGNAL_DEBUG
unsigned int lockpc[8];
unsigned int unlockpc[8];
#endif /* SIGNAL_DEBUG */
#endif /* DIAGNOSTIC */
- uint64_t p_dispatchqueue_offset;
- uint64_t p_dispatchqueue_serialno_offset;
- uint64_t p_dispatchqueue_label_offset;
- uint64_t p_return_to_kernel_offset;
- uint64_t p_mach_thread_self_offset;
- /* The offset is set to 0 if userspace is not requesting for this feature */
- uint64_t p_pthread_wq_quantum_offset;
-#if VM_PRESSURE_EVENTS
- struct timeval vm_pressure_last_notify_tstamp;
-#endif
- uint8_t p_crash_behavior; /* bit fields to control behavior on crash. See spawn.h POSIX_SPAWN_PANIC* */
- bool p_posix_spawn_failed; /* indicates that a posix_spawn failed */
- bool p_disallow_map_with_linking; /* used to prevent dyld's map_with_linking() usage after startup */
-
-#if CONFIG_MEMORYSTATUS
-#if CONFIG_FREEZE
- uint8_t p_memstat_freeze_skip_reason; /* memorystaus_freeze_skipped_reason_t. Protected by the freezer mutex. */
-#endif /* CONFIG_FREEZE */
- /* Fields protected by proc list lock */
- uint32_t p_memstat_state; /* state. Also used as a wakeup channel when the memstat's LOCKED bit changes */
- int32_t p_memstat_effectivepriority; /* priority after transaction state accounted for */
- int32_t p_memstat_requestedpriority; /* active priority */
- int32_t p_memstat_assertionpriority; /* assertion driven priority */
- uint32_t p_memstat_dirty; /* dirty state */
- TAILQ_ENTRY(proc) p_memstat_list; /* priority bucket link */
- uint64_t p_memstat_userdata; /* user state */
- uint64_t p_memstat_idledeadline; /* time at which process became clean */
- uint64_t p_memstat_prio_start; /* abstime process transitioned into the current band */
- uint64_t p_memstat_idle_delta; /* abstime delta spent in idle band */
- int32_t p_memstat_memlimit; /* cached memory limit, toggles between active and inactive limits */
- int32_t p_memstat_memlimit_active; /* memory limit enforced when process is in active jetsam state */
- int32_t p_memstat_memlimit_inactive; /* memory limit enforced when process is in inactive jetsam state */
- int32_t p_memstat_relaunch_flags; /* flags indicating relaunch behavior for the process */
-#if CONFIG_FREEZE
- uint32_t p_memstat_freeze_sharedanon_pages; /* shared pages left behind after freeze */
- uint32_t p_memstat_frozen_count;
- uint32_t p_memstat_thaw_count;
- uint32_t p_memstat_last_thaw_interval; /* In which freezer interval was this last thawed? */
-#endif /* CONFIG_FREEZE */
-#endif /* CONFIG_MEMORYSTATUS */
-
-// Index for `p_user_faults` for the global fault count limit
-#define PROC_P_USER_FAULTS_GLOBAL_IDX 0
-// Index for `p_user_faults` for OS_REASON_SECURITY_SOFT_TRAPS namespace fault limit
-#define PROC_P_USER_FAULTS_SOFT_TRAPS_IDX 1
- _Atomic uint16_t p_user_faults[2]; /* count the number of user faults generated */
-
- uint32_t p_memlimit_increase; /* byte increase for memory limit for dyld SPI rdar://problem/49950264, structure packing 32-bit and 64-bit */
-
- uint64_t p_crash_behavior_deadline; /* mach_continuous_time deadline. After this timestamp p_crash_behavior is invalid */
-
- uint32_t p_crash_count; /* Consecutive crash count threshold */
- uint32_t p_throttle_timeout; /* Exponential backoff throttle */
-
- struct os_reason *p_exit_reason;
-
-#if CONFIG_PROC_UDATA_STORAGE
- uint64_t p_user_data; /* general-purpose storage for userland-provided data */
-#endif /* CONFIG_PROC_UDATA_STORAGE */
-
- char * p_subsystem_root_path;
};
-#define PGRPID_DEAD 0xdeaddead
-
-/* p_listflag */
-#define P_LIST_WAITING 0x00000010
-#define P_LIST_CHILDDRSTART 0x00000080
-#define P_LIST_CHILDDRAINED 0x00000100
-#define P_LIST_CHILDDRWAIT 0x00000200
-#define P_LIST_CHILDLKWAIT 0x00000400
-#define P_LIST_DEADPARENT 0x00000800
-#define P_LIST_PARENTREFWAIT 0x00001000
-#define P_LIST_EXITCOUNT 0x00100000 /* counted for process exit */
-
-/* local flags */
-#define P_LDELAYTERM 0x00000001 /* */
-#define P_LHASTASK 0x00000002 /* process points to a task */
-#define P_LTERM 0x00000004 /* */
-#define P_LEXIT 0x00000008 /* */
-#define P_LPEXIT 0x00000010
-#define P_LTRANSCOMMIT 0x00000020 /* process is committed to trans */
-#define P_LINTRANSIT 0x00000040 /* process in exec or in creation */
-#define P_LTRANSWAIT 0x00000080 /* waiting for trans to complete */
-#define P_LTRACED 0x00000400 /* */
-#define P_LSIGEXC 0x00000800 /* */
-#define P_LNOATTACH 0x00001000 /* */
-#define P_LPPWAIT 0x00002000 /* */
-#define P_LPTHREADJITALLOWLIST 0x00004000 /* process has pthread JIT write function allowlist */
-#define P_LPTHREADJITFREEZELATE 0x00008000 /* process JIT function allowlist is frozen late */
-#define P_LTRACE_WAIT 0x00010000 /* wait for flag to be cleared before starting ptrace */
-#define P_LLIMCHANGE 0x00020000 /* process is changing its plimit (rlim_cur, rlim_max) */
-#define P_LLIMWAIT 0x00040000
-#define P_LWAITED 0x00080000
-#define P_LINSIGNAL 0x00100000
-#define P_LCUSTOM_STACK 0x00200000 /* process is using custom stack size */
-#define P_LRAGE_VNODES 0x00400000
-#define P_LREGISTER 0x00800000 /* thread start fns registered */
-#define P_LVMRSRCOWNER 0x01000000 /* can handle the resource ownership of */
-#define P_LTERM_DECRYPTFAIL 0x04000000 /* process terminating due to key failure to decrypt */
-#define P_LTERM_JETSAM 0x08000000 /* process is being jetsam'd */
-#define P_LWASSOFT 0x10000000 /* process had soft mode disabled due to ptrace */
-
-#define P_JETSAM_VMPAGESHORTAGE 0x00000000 /* jetsam: lowest jetsam priority proc, killed due to vm page shortage */
-#define P_JETSAM_VMTHRASHING 0x10000000 /* jetsam: lowest jetsam priority proc, killed due to vm thrashing */
-#define P_JETSAM_HIWAT 0x20000000 /* jetsam: high water mark */
-#define P_JETSAM_PID 0x30000000 /* jetsam: pid */
-#define P_JETSAM_IDLEEXIT 0x40000000 /* jetsam: idle exit */
-#define P_JETSAM_VNODE 0x50000000 /* jetsam: vnode kill */
-#define P_JETSAM_FCTHRASHING 0x60000000 /* jetsam: lowest jetsam priority proc, killed due to filecache thrashing */
-#define P_JETSAM_MASK 0x70000000 /* jetsam type mask */
-#define P_LNSPACE_RESOLVER 0x80000000 /* process is the namespace resolver */
-
-/* Process control state for resource starvation */
-#define P_PCTHROTTLE 1
-#define P_PCSUSP 2
-#define P_PCKILL 3
-#define P_PCMAX 3
-
-/* Process control action state on resrouce starvation */
-#define PROC_ACTION_MASK 0xffff0000;
-#define PROC_CONTROL_STATE(p) (p->p_pcaction & P_PCMAX)
-#define PROC_ACTION_STATE(p) ((p->p_pcaction >> 16) & P_PCMAX)
-#define PROC_SETACTION_STATE(p) (p->p_pcaction = (PROC_CONTROL_STATE(p) | (PROC_CONTROL_STATE(p) << 16)))
-#define PROC_RESETACTION_STATE(p) (p->p_pcaction = PROC_CONTROL_STATE(p))
-
-/* Process exit reason macros */
-#define PROC_HAS_EXITREASON(p) (p->p_exit_reason != OS_REASON_NULL)
-#define PROC_EXITREASON_FLAGS(p) p->p_exit_reason->osr_flags
-
-/* additional process flags */
-#define P_LADVLOCK 0x01
-#define P_LXBKIDLEINPROG 0x02
-#define P_RSR 0x04
-
-/* p_vfs_iopolicy flags */
-#define P_VFS_IOPOLICY_FORCE_HFS_CASE_SENSITIVITY 0x0001
-#define P_VFS_IOPOLICY_ATIME_UPDATES 0x0002
-#define P_VFS_IOPOLICY_MATERIALIZE_DATALESS_FILES 0x0004
-#define P_VFS_IOPOLICY_STATFS_NO_DATA_VOLUME 0x0008
-#define P_VFS_IOPOLICY_TRIGGER_RESOLVE_DISABLE 0x0010
-#define P_VFS_IOPOLICY_IGNORE_CONTENT_PROTECTION 0x0020
-#define P_VFS_IOPOLICY_IGNORE_NODE_PERMISSIONS 0x0040
-#define P_VFS_IOPOLICY_SKIP_MTIME_UPDATE 0x0080
-#define P_VFS_IOPOLICY_ALLOW_LOW_SPACE_WRITES 0x0100
-#define P_VFS_IOPOLICY_DISALLOW_RW_FOR_O_EVTONLY 0x0200
-#define P_VFS_IOPOLICY_ALTLINK 0x0400
-#define P_VFS_IOPOLICY_NOCACHE_WRITE_FS_BLKSIZE 0x0800
-#define P_VFS_IOPOLICY_SUPPORT_LONG_PATHS 0x1000
-#define P_VFS_IOPOLICY_ENTITLED_RESERVE_ACCESS 0x2000
-#define P_VFS_IOPOLICY_MATERIALIZE_DATALESS_FILES_ORIG 0x4000 /* preserves original at-launch policy */
-
-#define P_VFS_IOPOLICY_INHERITED_MASK \
- (P_VFS_IOPOLICY_FORCE_HFS_CASE_SENSITIVITY | \
- P_VFS_IOPOLICY_ATIME_UPDATES | \
- P_VFS_IOPOLICY_MATERIALIZE_DATALESS_FILES | \
- P_VFS_IOPOLICY_STATFS_NO_DATA_VOLUME | \
- P_VFS_IOPOLICY_TRIGGER_RESOLVE_DISABLE | \
- P_VFS_IOPOLICY_IGNORE_CONTENT_PROTECTION | \
- P_VFS_IOPOLICY_IGNORE_NODE_PERMISSIONS | \
- P_VFS_IOPOLICY_SKIP_MTIME_UPDATE | \
- P_VFS_IOPOLICY_DISALLOW_RW_FOR_O_EVTONLY | \
- P_VFS_IOPOLICY_ALTLINK | \
- P_VFS_IOPOLICY_NOCACHE_WRITE_FS_BLKSIZE | \
- P_VFS_IOPOLICY_SUPPORT_LONG_PATHS | \
- P_VFS_IOPOLICY_MATERIALIZE_DATALESS_FILES_ORIG)
-
-#define P_VFS_IOPOLICY_VALID_MASK \
- (P_VFS_IOPOLICY_INHERITED_MASK | \
- P_VFS_IOPOLICY_ALLOW_LOW_SPACE_WRITES | \
- P_VFS_IOPOLICY_ENTITLED_RESERVE_ACCESS)
-
-/* process creation arguments */
-#define PROC_CREATE_FORK 0 /* independent child (running) */
-#define PROC_CREATE_SPAWN 1 /* independent child (suspended) */
-
-/* LP64 version of extern_proc. all pointers
+
+#define P_LDELAYTERM 0x1 /* */
+#define P_LNOZOMB 0x2 /* */
+#define P_LLOW_PRI_IO 0x4
+#define P_LPEXIT 0x8
+#define P_LBACKGROUND_IO 0x10
+
+// LP64todo - should this move?
+/* LP64 version of extern_proc. all pointers
* grow when we're dealing with a 64-bit process.
* WARNING - keep in sync with extern_proc
* but use native alignment of 64-bit process.
*/
#ifdef KERNEL
-#include <sys/time.h> /* user_timeval, user_itimerval */
-
-/*
- * This packing is required to ensure symmetry between userspace and kernelspace
- * when the kernel is 64-bit and the user application is 32-bit. All currently
- * supported ARM slices (arm64/armv7k/arm64_32) contain the same struct
- * alignment ABI so this packing isn't needed for ARM.
- */
-#if defined(__x86_64__)
-#pragma pack(4)
+#include <sys/time.h> /* user_timeval, user_itimerval */
+
+#if __DARWIN_ALIGN_NATURAL
+#pragma options align=natural
#endif
-struct user32_extern_proc {
+
+struct user_extern_proc {
union {
struct {
- uint32_t __p_forw; /* Doubly-linked run/sleep queue. */
- uint32_t __p_back;
- } p_st1;
- struct user32_timeval __p_starttime; /* process start time */
- } p_un;
- uint32_t p_vmspace; /* Address space. */
- uint32_t p_sigacts; /* Signal actions, state (PROC ONLY). */
- int p_flag; /* P_* flags. */
- char p_stat; /* S* process status. */
- pid_t p_pid; /* Process identifier. */
- pid_t p_oppid; /* Save parent pid during ptrace. XXX */
- int p_dupfd; /* Sideways return value from fdopen. XXX */
- /* Mach related */
- uint32_t user_stack; /* where user stack was allocated */
- uint32_t exit_thread; /* XXX Which thread is exiting? */
- int p_debugger; /* allow to debug */
- boolean_t sigwait; /* indication to suspend */
- /* scheduling */
- u_int p_estcpu; /* Time averaged value of p_cpticks. */
- int p_cpticks; /* Ticks of cpu time. */
- fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */
- uint32_t p_wchan; /* Sleep address. */
- uint32_t p_wmesg; /* Reason for sleep. */
- u_int p_swtime; /* Time swapped in or out. */
- u_int p_slptime; /* Time since last blocked. */
- struct user32_itimerval p_realtimer; /* Alarm timer. */
- struct user32_timeval p_rtime; /* Real time. */
- u_quad_t p_uticks; /* Statclock hits in user mode. */
- u_quad_t p_sticks; /* Statclock hits in system mode. */
- u_quad_t p_iticks; /* Statclock hits processing intr. */
- int p_traceflag; /* Kernel trace points. */
- uint32_t p_tracep; /* Trace to vnode. */
- int p_siglist; /* DEPRECATED */
- uint32_t p_textvp; /* Vnode of executable. */
- int p_holdcnt; /* If non-zero, don't swap. */
- sigset_t p_sigmask; /* DEPRECATED. */
- sigset_t p_sigignore; /* Signals being ignored. */
- sigset_t p_sigcatch; /* Signals being caught by user. */
- u_char p_priority; /* Process priority. */
- u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */
- char p_nice; /* Process "nice" value. */
- char p_comm[MAXCOMLEN + 1];
- uint32_t p_pgrp; /* Pointer to process group. */
- uint32_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
- u_short p_xstat; /* Exit status for wait; also stop signal. */
- u_short p_acflag; /* Accounting flags. */
- uint32_t p_ru; /* Exit information. XXX */
-};
-#pragma pack()
-struct user64_extern_proc {
- union {
- struct {
- user_addr_t __p_forw; /* Doubly-linked run/sleep queue. */
+ user_addr_t __p_forw; /* Doubly-linked run/sleep queue. */
user_addr_t __p_back;
} p_st1;
- struct user64_timeval __p_starttime; /* process start time */
+ struct user_timeval __p_starttime; /* process start time */
} p_un;
- user_addr_t p_vmspace; /* Address space. */
- user_addr_t p_sigacts; /* Signal actions, state (PROC ONLY). */
- int p_flag; /* P_* flags. */
- char p_stat; /* S* process status. */
- pid_t p_pid; /* Process identifier. */
- pid_t p_oppid; /* Save parent pid during ptrace. XXX */
- int p_dupfd; /* Sideways return value from fdopen. XXX */
+ user_addr_t p_vmspace; /* Address space. */
+ user_addr_t p_sigacts; /* Signal actions, state (PROC ONLY). */
+ int p_flag; /* P_* flags. */
+ char p_stat; /* S* process status. */
+ pid_t p_pid; /* Process identifier. */
+ pid_t p_oppid; /* Save parent pid during ptrace. XXX */
+ int p_dupfd; /* Sideways return value from fdopen. XXX */
/* Mach related */
- user_addr_t user_stack __attribute((aligned(8))); /* where user stack was allocated */
+ user_addr_t user_stack; /* where user stack was allocated */
user_addr_t exit_thread; /* XXX Which thread is exiting? */
- int p_debugger; /* allow to debug */
- boolean_t sigwait; /* indication to suspend */
+ int p_debugger; /* allow to debug */
+ boolean_t sigwait; /* indication to suspend */
/* scheduling */
- u_int p_estcpu; /* Time averaged value of p_cpticks. */
- int p_cpticks; /* Ticks of cpu time. */
- fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */
- user_addr_t p_wchan __attribute((aligned(8))); /* Sleep address. */
- user_addr_t p_wmesg; /* Reason for sleep. */
- u_int p_swtime; /* Time swapped in or out. */
- u_int p_slptime; /* Time since last blocked. */
- struct user64_itimerval p_realtimer; /* Alarm timer. */
- struct user64_timeval p_rtime; /* Real time. */
- u_quad_t p_uticks; /* Statclock hits in user mode. */
- u_quad_t p_sticks; /* Statclock hits in system mode. */
- u_quad_t p_iticks; /* Statclock hits processing intr. */
- int p_traceflag; /* Kernel trace points. */
- user_addr_t p_tracep __attribute((aligned(8))); /* Trace to vnode. */
- int p_siglist; /* DEPRECATED */
- user_addr_t p_textvp __attribute((aligned(8))); /* Vnode of executable. */
- int p_holdcnt; /* If non-zero, don't swap. */
- sigset_t p_sigmask; /* DEPRECATED. */
- sigset_t p_sigignore; /* Signals being ignored. */
- sigset_t p_sigcatch; /* Signals being caught by user. */
- u_char p_priority; /* Process priority. */
- u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */
- char p_nice; /* Process "nice" value. */
- char p_comm[MAXCOMLEN + 1];
- user_addr_t p_pgrp __attribute((aligned(8))); /* Pointer to process group. */
- user_addr_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
- u_short p_xstat; /* Exit status for wait; also stop signal. */
- u_short p_acflag; /* Accounting flags. */
- user_addr_t p_ru __attribute((aligned(8))); /* Exit information. XXX */
+ u_int p_estcpu; /* Time averaged value of p_cpticks. */
+ int p_cpticks; /* Ticks of cpu time. */
+ fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */
+ user_addr_t p_wchan; /* Sleep address. */
+ user_addr_t p_wmesg; /* Reason for sleep. */
+ u_int p_swtime; /* Time swapped in or out. */
+ u_int p_slptime; /* Time since last blocked. */
+ struct user_itimerval p_realtimer; /* Alarm timer. */
+ struct user_timeval p_rtime; /* Real time. */
+ u_quad_t p_uticks; /* Statclock hits in user mode. */
+ u_quad_t p_sticks; /* Statclock hits in system mode. */
+ u_quad_t p_iticks; /* Statclock hits processing intr. */
+ int p_traceflag; /* Kernel trace points. */
+ user_addr_t p_tracep; /* Trace to vnode. */
+ int p_siglist; /* DEPRECATED */
+ user_addr_t p_textvp; /* Vnode of executable. */
+ int p_holdcnt; /* If non-zero, don't swap. */
+ sigset_t p_sigmask; /* DEPRECATED. */
+ sigset_t p_sigignore; /* Signals being ignored. */
+ sigset_t p_sigcatch; /* Signals being caught by user. */
+ u_char p_priority; /* Process priority. */
+ u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */
+ char p_nice; /* Process "nice" value. */
+ char p_comm[MAXCOMLEN+1];
+ user_addr_t p_pgrp; /* Pointer to process group. */
+ user_addr_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */
+ u_short p_xstat; /* Exit status for wait; also stop signal. */
+ u_short p_acflag; /* Accounting flags. */
+ user_addr_t p_ru; /* Exit information. XXX */
};
-#endif /* KERNEL */
-
-__exported_push_hidden
-
-extern struct vfs_context vfs_context0;
+
+#if __DARWIN_ALIGN_NATURAL
+#pragma options align=reset
+#endif
+#endif /* KERNEL */
/*
* We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t,
* as it is used to represent "no process group".
*/
-extern int nprocs, maxproc; /* Current and max number of procs. */
-extern int maxprocperuid; /* Current number of procs per uid */
-extern int hard_maxproc; /* hard limit */
-extern unsigned int proc_shutdown_exitcount;
-
-#define PID_MAX 99999
-#define NO_PID 100000
-extern lck_mtx_t proc_list_mlock;
-
-#ifdef XNU_KERNEL_PRIVATE
-/*
- * Identify a process uniquely.
- * proc_ident's fields match 1-1 with those in struct proc.
- */
-#define PROC_IDENT_PID_BIT_COUNT 28
-struct proc_ident {
- uint64_t p_uniqueid;
- pid_t
- may_exit : 1,
- may_exec : 1,
- reserved : 2,
- p_pid : PROC_IDENT_PID_BIT_COUNT;
- int p_idversion;
-};
-_Static_assert(sizeof(pid_t) == 4, "proc_ident assumes a 32-bit pid_t");
-_Static_assert(PID_MAX < (1 << PROC_IDENT_PID_BIT_COUNT), "proc_ident assumes PID_MAX requires less than 28bits");
-_Static_assert(NO_PID < (1 << PROC_IDENT_PID_BIT_COUNT), "proc_ident assumes NO_PID requires less than 28bits");
-#endif
-
-#define BSD_SIMUL_EXECS 33 /* 32 , allow for rounding */
-#define BSD_PAGEABLE_SIZE_PER_EXEC (NCARGS + PAGE_SIZE + PAGE_SIZE) /* page for apple vars, page for executable header */
-extern int execargs_cache_size;
-extern int execargs_free_count;
-extern vm_offset_t * execargs_cache;
-
-#define SESS_LEADER(p, sessp) ((sessp)->s_leader == (p))
-
-#define SESSHASH(sessid) (&sesshashtbl[(sessid) & sesshash])
-extern LIST_HEAD(sesshashhead, session) * sesshashtbl;
-extern u_long sesshash;
-
-extern lck_attr_t proc_lck_attr;
-extern lck_grp_t proc_fdmlock_grp;
-extern lck_grp_t proc_lck_grp;
-extern lck_grp_t proc_kqhashlock_grp;
-extern lck_grp_t proc_knhashlock_grp;
-extern lck_grp_t proc_slock_grp;
-extern lck_grp_t proc_mlock_grp;
-extern lck_grp_t proc_ucred_mlock_grp;
-extern lck_grp_t proc_dirslock_grp;
+extern int nprocs, maxproc; /* Current and max number of procs. */
+__private_extern__ int hard_maxproc; /* hard limit */
+
+#define PID_MAX 30000
+#define NO_PID 30001
+
+#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
+#define SESSHOLD(s) ((s)->s_count++)
+#define SESSRELE(s) sessrele(s)
+
+#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash])
+extern LIST_HEAD(pidhashhead, proc) *pidhashtbl;
+extern u_long pidhash;
+
+#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash])
+extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl;
+extern u_long pgrphash;
+extern lck_grp_t * proc_lck_grp;
+extern lck_grp_attr_t * proc_lck_grp_attr;
+extern lck_attr_t * proc_lck_attr;
LIST_HEAD(proclist, proc);
-extern struct proclist allproc; /* List of all processes. */
-extern struct proclist zombproc; /* List of zombie processes. */
-
-#if CONFIG_COREDUMP || CONFIG_UCOREDUMP
-extern const char * defaultcorefiledir;
-extern const char * defaultdrivercorefiledir;
-extern char corefilename[MAXPATHLEN + 1];
-extern char drivercorefilename[MAXPATHLEN + 1];
-extern int do_coredump;
-extern int sugid_coredump;
-#if CONFIG_UCOREDUMP
-extern int do_ucoredump;
-#endif /* CONFIG_UCOREDUMP */
-#endif /* CONFIG_COREDUMP || CONFIG_UCOREDUMP */
-
-__options_decl(cloneproc_flags_t, uint32_t, {
- CLONEPROC_SPAWN = 0,
- CLONEPROC_FORK = 0x0001,
- CLONEPROC_INITPROC = 0x0002,
- CLONEPROC_EXEC = 0x0004,
-});
-
-extern thread_t cloneproc(task_t, coalition_t *, proc_t, cloneproc_flags_t);
-extern struct proc * XNU_PTRAUTH_SIGNED_PTR("initproc") initproc;
+extern struct proclist allproc; /* List of all processes. */
+extern struct proclist zombproc; /* List of zombie processes. */
+extern struct proc *initproc;
+extern void pgdelete(struct pgrp *pgrp);
+extern void sessrele(struct session *sess);
+extern void procinit(void);
extern void proc_lock(struct proc *);
extern void proc_unlock(struct proc *);
-extern void proc_spinlock(struct proc *);
-extern void proc_spinunlock(struct proc *);
-extern void proc_list_lock(void);
-extern void proc_list_unlock(void);
-extern void proc_list_lock_held(void);
-extern void proc_klist_lock(void);
-extern void proc_klist_unlock(void);
extern void proc_fdlock(struct proc *);
-extern void proc_fdlock_spin(struct proc *);
extern void proc_fdunlock(struct proc *);
-extern void proc_fdlock_assert(proc_t p, int assertflags);
-extern void proc_dirs_lock_shared(struct proc *);
-extern void proc_dirs_unlock_shared(struct proc *);
-extern void proc_dirs_lock_exclusive(struct proc *);
-extern void proc_dirs_unlock_exclusive(struct proc *);
-extern void proc_ucred_lock(struct proc *);
-extern void proc_ucred_unlock(struct proc *);
-extern void proc_update_creds_onproc(struct proc *, kauth_cred_t cred);
-extern kauth_cred_t proc_ucred_locked(proc_t p);
-extern kauth_cred_t proc_ucred_smr(proc_t p);
-extern kauth_cred_t proc_ucred_unsafe(proc_t p) __exported;
-#if CONFIG_COREDUMP || CONFIG_UCOREDUMP
-__private_extern__ int proc_core_name(const char *format, const char *name,
- uid_t uid, pid_t pid, char *cr_name, size_t cr_name_len);
-#endif
-/* proc_best_name_for_pid finds a process with a given pid and copies its best name of
- * the executable (32-byte name if it exists, otherwise the 16-byte name) to
- * the passed in buffer. The size of the buffer is to be passed in as well.
- */
-extern void proc_best_name_for_pid(int pid, char * buf, int size);
+__private_extern__ char *proc_core_name(const char *name, uid_t uid, pid_t pid);
extern int isinferior(struct proc *, struct proc *);
-__private_extern__ bool pzfind(pid_t); /* Check zombie by pid. */
-__private_extern__ bool pzfind_unique(pid_t, uint64_t); /* Check zombie by uniqueid. */
-__private_extern__ struct proc *proc_find_zombref(pid_t); /* Find zombie by id. */
-__private_extern__ struct proc *proc_find_zombref_locked(pid_t); /* Find zombie by id. */
-__private_extern__ void proc_drop_zombref(struct proc * p); /* Drop zombie ref. */
-
-/*
- * This function is used to inc/dec proc count per user.
- * User of the function must obey the contract:
- * - cannot have spurious calls to this function (e.g. sending -1 decrement to proc without procs on it)
- * - for every positive diff - there will be sent negative diff when the proc will die (to avoid uid leaks)
- * - this function uses `proc_list_*lock` functions for synchronizations
- */
-extern size_t chgproccnt(uid_t uid, int diff);
-
-/* This function is to provide a way to resolve conflict on caller side, instead of
- * relying on @f chgproccnt doing that.
- *
- * `proc_list_lock` is expected to be locked when calling this function.
- *
- * This function (same as @f chgproccnt) cannot be called spuriously, callers
- * are expected to have precise control when this can be called spuriously (e.g. due
- * to race conditions and missing synchronizations ) and resolve conflicts before calling
- * this function.
- *
- * Main constraints for this function are:
- * 1) if newuip is provided => `diff > 0`
- * 2) diff is never == 0
- * 3) this function return a value to be kfree'd
- * 4) caller guarantees that element by uid exists or newuip is passed
- * IMPORTANT INVARIANT:
- * - this function may return only one value to be freed:
- * - in one case it may be the `newuip` that we didn't need due to some other
- * thread added element concurrently
- * - the only other case is when we remove element from list due to ui_proccnt == 0
- * this case is possible only with diff < 0, hence `newuip` couldn't be provided
- *
- * @p uid is the uid number to change proc count off
- * @p diff is the delta value to apply
- * @p newuip - opportunistically allocated element
- * @p[out] out - value of proc count for given uid is returned via this argument
- *
- * Returns value to dellocate (if any)
- */
-extern struct uidinfo *chgproccnt_locked(uid_t uid, int diff, struct uidinfo *newuip, size_t *out);
-extern void pinsertchild(struct proc *parent, struct proc *child, bool in_exec);
-extern void p_reparentallchildren(proc_t old_proc, proc_t new_proc);
-extern int setsid_internal(struct proc *p);
-#ifndef __cplusplus
-extern void setlogin_internal(proc_t p, const char login[static MAXLOGNAME]);
-#endif // __cplusplus
-extern int setgroups_internal(proc_t p, u_int gidsetsize, gid_t *gidset, uid_t gmuid);
-extern int enterpgrp(struct proc *p, pid_t pgid, int mksess);
-extern void fixjobc(struct proc *p, struct pgrp *pgrp, int entering);
-extern int inferior(struct proc *p);
-extern void resetpriority(struct proc *);
-extern void setrunnable(struct proc *);
-extern void setrunqueue(struct proc *);
-extern int sleep(void *chan, int pri) __exported;
-extern int tsleep0(void *chan, int pri, const char *wmesg, int timo, int (*continuation)(int));
-extern int tsleep1(void *chan, int pri, const char *wmesg, u_int64_t abstime, int (*continuation)(int));
-extern int exit1(struct proc *, int, int *);
-extern int exit1_internal(struct proc *, int, int *, boolean_t, boolean_t, int);
-extern int exit_with_reason(struct proc *, int, int *, boolean_t, boolean_t, int, struct os_reason *);
-extern int fork1(proc_t, thread_t *, int, coalition_t *);
-extern void proc_reparentlocked(struct proc *child, struct proc * newparent, int cansignal, int locked);
-
-extern bool proc_list_exited(proc_t p);
-extern proc_t proc_find_locked(int pid);
-extern proc_t proc_find_noref_smr(int pid);
-extern bool proc_is_shadow(proc_t p);
-extern proc_t proc_findthread(thread_t thread);
-extern void proc_refdrain(proc_t);
-extern proc_t proc_refdrain_will_exec(proc_t p);
-extern void proc_refwake_did_exec(proc_t p);
-extern void proc_childdrainlocked(proc_t);
-extern void proc_childdrainstart(proc_t);
-extern void proc_childdrainend(proc_t);
-extern void proc_checkdeadrefs(proc_t);
-struct proc *phash_find_locked(pid_t);
-extern void phash_insert_locked(struct proc *);
-extern void phash_remove_locked(struct proc *);
-extern void phash_replace_locked(struct proc *old_proc, struct proc *new_proc);
-extern bool pghash_exists_locked(pid_t);
-extern void pghash_insert_locked(struct pgrp *);
-extern struct pgrp *pgrp_find(pid_t);
-extern void pgrp_rele(struct pgrp * pgrp);
-extern struct session * session_find_internal(pid_t sessid);
-extern struct pgrp *proc_pgrp(proc_t, struct session **);
-extern struct pgrp *pgrp_leave_locked(struct proc *p);
-extern struct pgrp *pgrp_enter_locked(struct proc *parent, struct proc *p);
-extern struct pgrp *tty_pgrp_locked(struct tty * tp);
-struct pgrp *pgrp_alloc(pid_t pgid, pggrp_ref_bits_t bits);
-extern void pgrp_lock(struct pgrp * pgrp);
-extern void pgrp_unlock(struct pgrp * pgrp);
-extern struct session *session_find_locked(pid_t sessid);
-extern void session_replace_leader(struct proc *old_proc, struct proc *new_proc);
-extern struct session *session_alloc(struct proc *leader);
-extern void session_lock(struct session * sess);
-extern void session_unlock(struct session * sess);
-extern struct session *session_ref(struct session *sess);
-extern void session_rele(struct session *sess);
-extern struct tty *session_set_tty_locked(struct session *sessp, struct tty *);
-extern struct tty *session_clear_tty_locked(struct session *sess);
-extern struct tty *session_tty(struct session *sess);
-extern proc_t proc_parentholdref(proc_t);
-extern int proc_parentdropref(proc_t, int);
-int itimerfix(struct timeval *tv);
-int itimerdecr(struct proc * p, struct itimerval *itp, int usec);
-void proc_free_realitimer(proc_t proc);
-void proc_inherit_itimers(struct proc *old_proc, struct proc *new_proc);
-int timespec_is_valid(const struct timespec *);
-void proc_signalstart(struct proc *, int locked);
-void proc_signalend(struct proc *, int locked);
-int proc_transstart(struct proc *, int locked, int non_blocking);
-void proc_transcommit(struct proc *, int locked);
-void proc_transend(struct proc *, int locked);
-int proc_transwait(struct proc *, int locked);
-struct proc *proc_ref(struct proc *p, int locked);
-void proc_wait_release(struct proc *p);
-void proc_knote(struct proc * p, long hint);
-void proc_transfer_knotes(struct proc *old_proc, struct proc *new_proc);
-void proc_knote_drain(struct proc *p);
-void proc_setregister(proc_t p);
-void proc_resetregister(proc_t p);
-void proc_disable_sec_soft_mode_locked(proc_t p);
-bool proc_get_pthread_jit_allowlist(proc_t p, bool *late_out);
-void proc_set_pthread_jit_allowlist(proc_t p, bool late);
-/* returns the first thread_t in the process, or NULL XXX for NFS, DO NOT USE */
-thread_t proc_thread(proc_t);
-extern int proc_pendingsignals(proc_t, sigset_t);
-int proc_getpcontrol(int pid, int * pcontrolp);
-int proc_resetpcontrol(int pid);
-#if PSYNCH
-void pth_proc_hashinit(proc_t);
-void pth_proc_hashdelete(proc_t);
-void pth_global_hashinit(void);
-extern thread_call_t psynch_thcall;
-void psynch_wq_cleanup(__unused void * param, __unused void * param1);
-extern lck_mtx_t * pthread_list_mlock;
-#endif /* PSYNCH */
-struct uthread *current_uthread(void) __pure2;
-
-extern void proc_set_task(proc_t, task_t);
-extern task_t proc_get_task_raw(proc_t proc);
-extern proc_t task_get_proc_raw(task_t task);
-extern void proc_ref_hold_proc_task_struct(proc_t proc);
-extern void proc_release_proc_task_struct(proc_t proc);
-extern void task_ref_hold_proc_task_struct(task_t task);
-extern void task_release_proc_task_struct(task_t task, proc_ro_t proc_ro);
-extern void proc_setpidversion(proc_t, int);
-extern uint64_t proc_getcsflags(proc_t);
-extern void proc_csflags_update(proc_t, uint64_t);
-extern void proc_csflags_set(proc_t, uint64_t);
-extern void proc_csflags_clear(proc_t, uint64_t);
-extern uint8_t *proc_syscall_filter_mask(proc_t);
-extern void proc_syscall_filter_mask_set(proc_t, uint8_t *);
-extern pid_t proc_getpid(proc_t);
-extern void proc_setplatformdata(proc_t, uint32_t, uint32_t, uint32_t);
-extern void proc_set_sigact(proc_t, int, user_addr_t);
-extern void proc_set_trampact(proc_t, int, user_addr_t);
-extern void proc_set_sigact_trampact(proc_t, int, user_addr_t, user_addr_t);
-extern void proc_reset_sigact(proc_t, sigset_t);
-extern void proc_setexecutableuuid(proc_t, const uuid_t);
-extern const unsigned char *__counted_by(sizeof(uuid_t)) proc_executableuuid_addr(proc_t);
-extern void proc_getresponsibleuuid(proc_t target_proc, unsigned char *__counted_by(size)responsible_uuid, unsigned long size);
-extern void proc_setresponsibleuuid(proc_t target_proc, unsigned char *__counted_by(size)responsible_uuid, unsigned long size);
-
-extern bool proc_was_ptraced_during_soft_mode(proc_t p);
-extern void proc_set_ptraced_during_soft_mode(proc_t p);
-
-#pragma mark - process iteration
-
-/*
- * ALLPROC_FOREACH cannot be used to access the task, as the field may be
- * swapped out during exec. With `proc_iterate`, find threads by iterating the
- * `p_uthlist` field of the proc, under the `proc_lock`.
- */
-
-#define ALLPROC_FOREACH(var) \
- LIST_FOREACH((var), &allproc, p_list)
-
-#define ZOMBPROC_FOREACH(var) \
- LIST_FOREACH((var), &zombproc, p_list)
-
-#define PGMEMBERS_FOREACH(group, var) \
- LIST_FOREACH((var), &((struct pgrp *)(group))->pg_members, p_pglist)
-
-#define PCHILDREN_FOREACH(parent, var) \
- LIST_FOREACH((var), &(((struct proc *)(parent))->p_children), p_sibling)
-
-typedef int (*proc_iterate_fn_t)(proc_t, void *);
-
-/*
- * These are the only valid return values of `callout` functions provided to
- * process iterators.
- *
- * CLAIMED returns expect the caller to call proc_rele on the proc. DONE
- * returns stop iterating processes early.
- */
-#define PROC_RETURNED (0)
-#define PROC_RETURNED_DONE (1)
-#define PROC_CLAIMED (2)
-#define PROC_CLAIMED_DONE (3)
-
-/*
- * pgrp_iterate walks the provided process group, calling `filterfn` with
- * `filterarg` for each process. For processes where `filterfn` returned
- * non-zero, `callout` is called with `arg`.
- *
- * `PGMEMBERS_FOREACH` might also be used under the pgrp_lock to achieve a
- * similar effect.
- */
-
-extern void pgrp_iterate(struct pgrp *pgrp, proc_iterate_fn_t callout,
- void *arg, bool (^filterfn)(proc_t));
-
-/*
- * proc_iterate walks the `allproc` and/or `zombproc` lists, calling `filterfn`
- * with `filterarg` for each process. For processes where `filterfn` returned
- * non-zero, `callout` is called with `arg`. If the `PROC_NOWAITTRANS` flag is
- * unset, this function waits for transitions.
- *
- * `ALLPROC_FOREACH` or `ZOMBPROC_FOREACH` might also be used under the
- * `proc_list_lock` to achieve a similar effect.
- */
-#define PROC_ALLPROCLIST (1U << 0) /* walk the allproc list (processes not yet exited) */
-#define PROC_ZOMBPROCLIST (1U << 1) /* walk the zombie list */
-#define PROC_NOWAITTRANS (1U << 2) /* do not wait for transitions (checkdirs only) */
-
-extern void proc_iterate(unsigned int flags, proc_iterate_fn_t callout,
- void *arg, proc_iterate_fn_t filterfn, void *filterarg);
-
-/*
- * proc_childrenwalk walks the children of process `p`, calling `callout` for
- * each one.
- *
- * `PCHILDREN_FOREACH` might also be used under the `proc_list_lock` to achieve
- * a similar effect.
- */
-extern void proc_childrenwalk(proc_t p, proc_iterate_fn_t callout, void *arg);
-
-/*
- * proc_rebootscan should only be used by kern_shutdown.c
- */
-extern void proc_rebootscan(proc_iterate_fn_t callout, void *arg,
- proc_iterate_fn_t filterfn, void *filterarg);
-
-/*
- * Construct a proc_ident from a proc_t
- */
-extern struct proc_ident proc_ident_with_policy(proc_t p, proc_ident_validation_policy_t policy);
-
-/*
- * Validate that a particular policy bit is set
- */
-extern bool proc_ident_has_policy(const proc_ident_t ident, enum proc_ident_validation_policy policy);
-
-pid_t dtrace_proc_selfpid(void);
-pid_t dtrace_proc_selfppid(void);
-uid_t dtrace_proc_selfruid(void);
-
-os_refgrp_decl_extern(p_refgrp);
-KALLOC_TYPE_DECLARE(proc_stats_zone);
-ZONE_DECLARE_ID(ZONE_ID_PROC_TASK, struct proc);
-extern zone_t proc_task_zone;
-
-#if CONFIG_PROC_RESOURCE_LIMITS
-int proc_set_filedesc_limits(proc_t p, int soft_limit, int hard_limit);
-int proc_set_kqworkloop_limits(proc_t p, int soft_limit, int hard_limit);
-#endif /* CONFIG_PROC_RESOURCE_LIMITS */
-
-/*
- * True if the process ignores file permissions in case it owns the
- * file/directory
- */
-bool proc_ignores_node_permissions(proc_t proc);
-
-/*
- * @func no_paging_space_action
- *
- * @brief React to compressor/swap exhaustion
- *
- * @returns true if the low-swap note should be sent
- */
-extern bool no_paging_space_action(uint32_t cause);
-
-__exported_pop
-#endif /* !_SYS_PROC_INTERNAL_H_ */
+extern struct proc *pfind(pid_t); /* Find process by id. */
+__private_extern__ struct proc *pzfind(pid_t); /* Find zombie by id. */
+extern struct pgrp *pgfind(pid_t); /* Find process group by id. */
+
+extern int chgproccnt(uid_t uid, int diff);
+extern int enterpgrp(struct proc *p, pid_t pgid, int mksess);
+extern void fixjobc(struct proc *p, struct pgrp *pgrp, int entering);
+extern int inferior(struct proc *p);
+extern int leavepgrp(struct proc *p);
+extern void resetpriority(struct proc *);
+extern void setrunnable(struct proc *);
+extern void setrunqueue(struct proc *);
+extern int sleep(void *chan, int pri);
+extern int tsleep0(void *chan, int pri, const char *wmesg, int timo, int (*continuation)(int));
+extern int tsleep1(void *chan, int pri, const char *wmesg, u_int64_t abstime, int (*continuation)(int));
+extern int msleep0(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, int timo, int (*continuation)(int));
+extern void vfork_return(thread_t th_act, struct proc *p, struct proc *p2, register_t *retval);
+
+
+#endif /* !_SYS_PROC_INTERNAL_H_ */