#include <pthread.h>
#include <pthread/private.h>
#include <dlfcn.h>
+#include <fcntl.h>
#include <errno.h>
#include <_libkernel_init.h> // Must be after voucher_private.h
extern void _libxpc_initializer(void); // from libxpc.dylib
extern void _libsecinit_initializer(void); // from libsecinit.dylib
extern void _libtrace_init(void); // from libsystem_trace.dylib
+extern void _container_init(const char *apple[]); // from libsystem_containermanager.dylib
+extern void __libdarwin_init(void); // from libsystem_darwin.dylib
// signal malloc stack logging that initialisation has finished
extern void _pthread_clear_qos_tsd(mach_port_t) __attribute__((weak_import));
// system library atfork handlers
-extern void _pthread_fork_prepare(void);
-extern void _pthread_fork_parent(void);
-extern void _pthread_fork_child(void);
-extern void _pthread_fork_child_postinit(void);
+extern void _pthread_atfork_prepare(void);
+extern void _pthread_atfork_parent(void);
+extern void _pthread_atfork_child(void);
+extern void _pthread_atfork_prepare_handlers();
+extern void _pthread_atfork_parent_handlers(void);
+extern void _pthread_atfork_child_handlers(void);
extern void _pthread_exit_if_canceled(int);
extern void dispatch_atfork_prepare(void);
extern char *_dirhelper(int, char *, size_t);
#endif
-#if TARGET_OS_EMBEDDED && !TARGET_OS_WATCH && !__LP64__
-extern void _vminterpose_init(void);
-#endif
-
// advance decls for below;
void libSystem_atfork_prepare(void);
void libSystem_atfork_parent(void);
void libSystem_atfork_child(void);
+#if CURRENT_VARIANT_asan
+const char *__asan_default_options(void);
+#endif
+
// libsyscall_initializer() initializes all of libSystem.dylib
// <rdar://problem/4892197>
__attribute__((constructor))
__libkernel_init(&libkernel_funcs, envp, apple, vars);
__libplatform_init(NULL, envp, apple, vars);
+
__pthread_init(&libpthread_funcs, envp, apple, vars);
+
_libc_initializer(&libc_funcs, envp, apple, vars);
// TODO: Move __malloc_init before __libc_init after breaking malloc's upward link to Libc
__malloc_init(apple);
-#if !TARGET_OS_SIMULATOR
+#if TARGET_OS_OSX
/* <rdar://problem/9664631> */
__keymgr_initializer();
#endif
- _dyld_initializer();
+ // No ASan interceptors are invoked before this point. ASan is normally initialized via the malloc interceptor:
+ // _dyld_initializer() -> tlv_load_notification -> wrap_malloc -> ASanInitInternal
+ _dyld_initializer();
libdispatch_init();
_libxpc_initializer();
+#if CURRENT_VARIANT_asan
+ setenv("DT_BYPASS_LEAKS_CHECK", "1", 1);
+#endif
+
+ // must be initialized after dispatch
+ _libtrace_init();
+
#if !(TARGET_OS_EMBEDDED || TARGET_OS_SIMULATOR)
_libsecinit_initializer();
#endif
- __stack_logging_early_finished();
-
-#if TARGET_OS_EMBEDDED && !TARGET_OS_WATCH && !__LP64__
- _vminterpose_init();
+#if defined(HAVE_SYSTEM_CONTAINERMANAGER)
+ _container_init(apple);
#endif
- _libtrace_init(); // must be initialized after dispatch
+ __libdarwin_init();
+
+ __stack_logging_early_finished();
#if !TARGET_OS_IPHONE
/* <rdar://problem/22139800> - Preserve the old behavior of apple[] for
/*
* libSystem_atfork_{prepare,parent,child}() are called by libc during fork(2).
- * They call the corresponding atfork handlers for other libsystem components.
*/
void
libSystem_atfork_prepare(void)
{
+ // first call client prepare handlers registered with pthread_atfork()
+ _pthread_atfork_prepare_handlers();
+
+ // second call hardwired fork prepare handlers for Libsystem components
+ // in the _reverse_ order of library initalization above
_libSC_info_fork_prepare();
xpc_atfork_prepare();
dispatch_atfork_prepare();
- _pthread_fork_prepare();
_malloc_fork_prepare();
+ _pthread_atfork_prepare();
}
void
libSystem_atfork_parent(void)
{
+ // first call hardwired fork parent handlers for Libsystem components
+ // in the order of library initalization above
+ _pthread_atfork_parent();
_malloc_fork_parent();
- _pthread_fork_parent();
dispatch_atfork_parent();
xpc_atfork_parent();
_libSC_info_fork_parent();
+
+ // second call client parent handlers registered with pthread_atfork()
+ _pthread_atfork_parent_handlers();
}
void
libSystem_atfork_child(void)
{
+ // first call hardwired fork child handlers for Libsystem components
+ // in the order of library initalization above
_dyld_fork_child();
- _pthread_fork_child();
+ _pthread_atfork_child();
+ _mach_fork_child();
_malloc_fork_child();
+ _libc_fork_child(); // _arc4_fork_child calls malloc
dispatch_atfork_child();
-
- _mach_fork_child();
- _libc_fork_child();
-
#if defined(HAVE_SYSTEM_CORESERVICES)
_libcoreservices_fork_child();
#endif
-
_asl_fork_child();
_notify_fork_child();
xpc_atfork_child();
+ _libtrace_fork_child();
_libSC_info_fork_child();
- _pthread_fork_child_postinit();
- _libtrace_fork_child(); // no prep work required for the fork
+ // second call client parent handlers registered with pthread_atfork()
+ _pthread_atfork_child_handlers();
}
+#if CURRENT_VARIANT_asan
+char dynamic_asan_opts[1024] = {0};
+const char *__asan_default_options(void) {
+ int fd = open("/System/Library/Preferences/com.apple.asan.options", O_RDONLY);
+ if (fd != -1) {
+ ssize_t remaining_size = sizeof(dynamic_asan_opts) - 1;
+ char *p = dynamic_asan_opts;
+ ssize_t read_bytes = 0;
+ do {
+ read_bytes = read(fd, p, remaining_size);
+ remaining_size -= read_bytes;
+ } while (read_bytes > 0);
+ close(fd);
+
+ if (dynamic_asan_opts[0]) {
+ return dynamic_asan_opts;
+ }
+ }
+
+ return "color=never:handle_segv=0:handle_sigbus=0:handle_sigill=0:handle_sigfpe=0";
+}
+#endif
+
/*
* Old crt1.o glue used to call through mach_init_routine which was used to initialize libSystem.
* LibSystem now auto-initializes but mach_init_routine is left for binary compatibility.
projects / apple / libsystem.git / blobdiff