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--- Libc/Libc-1725.40.4/sys/fork.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * Copyright (c) 2010 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_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. 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_LICENSE_HEADER_END@
- */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <TargetConditionals.h>
-#include <stdbool.h>
-
-#include "_libc_init.h" // for libc_atfork_helper
-
-extern pid_t __fork(void);
-extern pid_t __vfork(void);
-
-static void (*_libSystem_atfork_prepare)(void) = 0;
-static void (*_libSystem_atfork_parent)(void) = 0;
-static void (*_libSystem_atfork_child)(void) = 0;
-static void (*_libSystem_atfork_prepare_v2)(unsigned int flags, ...) = 0;
-static void (*_libSystem_atfork_parent_v2)(unsigned int flags, ...) = 0;
-static void (*_libSystem_atfork_child_v2)(unsigned int flags, ...) = 0;
-
-__private_extern__
-void _libc_fork_init(const struct _libc_functions *funcs)
-{
- if (funcs->version >= 2) {
- _libSystem_atfork_prepare_v2 = funcs->atfork_prepare_v2;
- _libSystem_atfork_parent_v2 = funcs->atfork_parent_v2;
- _libSystem_atfork_child_v2 = funcs->atfork_child_v2;
- } else {
- _libSystem_atfork_prepare = funcs->atfork_prepare;
- _libSystem_atfork_parent = funcs->atfork_parent;
- _libSystem_atfork_child = funcs->atfork_child;
- }
-}
-
-static inline __attribute__((always_inline))
-pid_t
-_do_fork(bool libsystem_atfork_handlers_only)
-{
- int ret;
-
- int flags = libsystem_atfork_handlers_only ? LIBSYSTEM_ATFORK_HANDLERS_ONLY_FLAG : 0;
-
- if (_libSystem_atfork_prepare_v2) {
- _libSystem_atfork_prepare_v2(flags);
- } else {
- _libSystem_atfork_prepare();
- }
- // Reader beware: this __fork() call is yet another wrapper around the actual syscall
- // and lives inside libsyscall. The fork syscall needs some cuddling by asm before it's
- // allowed to see the big wide C world.
- ret = __fork();
- if (-1 == ret)
- {
- // __fork already set errno for us
- if (_libSystem_atfork_parent_v2) {
- _libSystem_atfork_parent_v2(flags);
- } else {
- _libSystem_atfork_parent();
- }
- return ret;
- }
-
- if (0 == ret)
- {
- // We're the child in this part.
- if (_libSystem_atfork_child_v2) {
- _libSystem_atfork_child_v2(flags);
- } else {
- _libSystem_atfork_child();
- }
- return 0;
- }
-
- if (_libSystem_atfork_parent_v2) {
- _libSystem_atfork_parent_v2(flags);
- } else {
- _libSystem_atfork_parent();
- }
- return ret;
-}
-
-pid_t
-fork(void)
-{
- return _do_fork(false);
-}
-
-pid_t
-vfork(void)
-{
- // vfork() is now just fork().
- // Skip the API pthread_atfork handlers, but do call our own
- // Libsystem_atfork handlers. People are abusing vfork in ways where
- // it matters, e.g. tcsh does all kinds of stuff after the vfork. Sigh.
- return _do_fork(true);
-}
-