* Copyright (c) 2007, 2008, 2011-2013 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
* 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,
* 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@
*/
#include <stddef.h>
#include <stdlib.h>
+#include <unistd.h>
+#include <corecrypto/cc_priv.h>
#include <libc_private.h>
#include <pthread.h>
#include <pthread/private.h>
+#if !TARGET_OS_DRIVERKIT
#include <dlfcn.h>
+#endif
#include <fcntl.h>
#include <errno.h>
+#include <sys/kdebug.h>
#include <_libkernel_init.h> // Must be after voucher_private.h
+#include <malloc_implementation.h>
#include <mach-o/dyld_priv.h>
extern void __libdarwin_init(void); // from libsystem_darwin.dylib
-// signal malloc stack logging that initialisation has finished
-extern void __stack_logging_early_finished(void); // form libsystem_c.dylib
-
// clear qos tsd (from pthread)
extern void _pthread_clear_qos_tsd(mach_port_t) __attribute__((weak_import));
extern void _mach_fork_child(void);
extern void _notify_fork_child(void);
+extern void _dyld_atfork_prepare(void);
+extern void _dyld_atfork_parent(void);
extern void _dyld_fork_child(void);
extern void xpc_atfork_prepare(void);
extern void xpc_atfork_parent(void);
const char *__asan_default_options(void);
#endif
+static inline void
+_libSystem_ktrace4(uint32_t code, uint64_t a, uint64_t b, uint64_t c, uint64_t d)
+{
+ if (__builtin_expect(*(volatile uint32_t *)_COMM_PAGE_KDEBUG_ENABLE == 0, 1)) return;
+ kdebug_trace(code, a, b, c, d);
+}
+#define _libSystem_ktrace3(code, a, b, c) _libSystem_ktrace4(code, a, b, c, 0)
+#define _libSystem_ktrace2(code, a, b) _libSystem_ktrace4(code, a, b, 0, 0)
+#define _libSystem_ktrace1(code, a) _libSystem_ktrace4(code, a, 0, 0, 0)
+#define _libSystem_ktrace0(code) _libSystem_ktrace4(code, 0, 0, 0, 0)
+
+/*
+ * these define stable Ariadne tracepoints. If initializers are removed, or
+ * added, then old tracepoints MUST NOT be recycled.
+ */
+enum {
+ ARIADNE_LIFECYCLE_libsystem_init = ARIADNEDBG_CODE(220, 4),
+};
+
+/*
+ * These represent the initializer "name"
+ *
+ * They happen to match the order of the initializers at some point in time,
+ * but there's no guarantee made that traecepoints will appear in numerical
+ * order. As initializers come and go, new codes shall be allocated,
+ * and no slots reused.
+ */
+enum init_func {
+ INIT_SYSTEM = 0,
+ INIT_KERNEL = 1,
+ INIT_PLATFORM = 2,
+ INIT_PTHREAD = 3,
+ INIT_LIBC = 4,
+ INIT_MALLOC = 5,
+ INIT_KEYMGR = 6,
+ INIT_DYLD = 7,
+ INIT_LIBDISPATCH = 8,
+ INIT_LIBXPC = 9,
+ INIT_LIBTRACE = 10,
+ INIT_SECINIT = 11,
+ INIT_CONTAINERMGR = 12,
+ INIT_DARWIN = 13,
+};
+
+#define _libSystem_ktrace_init_func(what) \
+ _libSystem_ktrace1(ARIADNE_LIFECYCLE_libsystem_init | DBG_FUNC_NONE, INIT_##what)
+
// libsyscall_initializer() initializes all of libSystem.dylib
// <rdar://problem/4892197>
__attribute__((constructor))
static const struct _libkernel_functions libkernel_funcs = {
.version = 3,
// V1 functions
+#if !TARGET_OS_DRIVERKIT
.dlsym = dlsym,
+#endif
.malloc = malloc,
.free = free,
.realloc = realloc,
.malloc = malloc,
.free = free,
};
-
+
static const struct _libc_functions libc_funcs = {
.version = 1,
.atfork_prepare = libSystem_atfork_prepare,
.dirhelper = _dirhelper,
#endif
};
+
+ static const struct _malloc_functions malloc_funcs = {
+ .version = 1,
+#if !TARGET_OS_DRIVERKIT
+ .dlopen = dlopen,
+ .dlsym = dlsym,
+#endif
+ };
+
+ _libSystem_ktrace0(ARIADNE_LIFECYCLE_libsystem_init | DBG_FUNC_START);
__libkernel_init(&libkernel_funcs, envp, apple, vars);
+ _libSystem_ktrace_init_func(KERNEL);
__libplatform_init(NULL, envp, apple, vars);
+ _libSystem_ktrace_init_func(PLATFORM);
__pthread_init(&libpthread_funcs, envp, apple, vars);
+ _libSystem_ktrace_init_func(PTHREAD);
_libc_initializer(&libc_funcs, envp, apple, vars);
+ _libSystem_ktrace_init_func(LIBC);
// TODO: Move __malloc_init before __libc_init after breaking malloc's upward link to Libc
__malloc_init(apple);
+ _libSystem_ktrace_init_func(MALLOC);
#if TARGET_OS_OSX
/* <rdar://problem/9664631> */
__keymgr_initializer();
+ _libSystem_ktrace_init_func(KEYMGR);
#endif
// 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();
+ _libSystem_ktrace_init_func(DYLD);
libdispatch_init();
+ _libSystem_ktrace_init_func(LIBDISPATCH);
+
+#if !TARGET_OS_DRIVERKIT
_libxpc_initializer();
+ _libSystem_ktrace_init_func(LIBXPC);
#if CURRENT_VARIANT_asan
setenv("DT_BYPASS_LEAKS_CHECK", "1", 1);
#endif
+#endif // !TARGET_OS_DRIVERKIT
// must be initialized after dispatch
_libtrace_init();
+ _libSystem_ktrace_init_func(LIBTRACE);
-#if !(TARGET_OS_EMBEDDED || TARGET_OS_SIMULATOR)
+#if !TARGET_OS_DRIVERKIT
+#if defined(HAVE_SYSTEM_SECINIT)
_libsecinit_initializer();
+ _libSystem_ktrace_init_func(SECINIT);
#endif
#if defined(HAVE_SYSTEM_CONTAINERMANAGER)
_container_init(apple);
+ _libSystem_ktrace_init_func(CONTAINERMGR);
#endif
__libdarwin_init();
+ _libSystem_ktrace_init_func(DARWIN);
+#endif // !TARGET_OS_DRIVERKIT
- __stack_logging_early_finished();
+ __stack_logging_early_finished(&malloc_funcs);
#if !TARGET_OS_IPHONE
- /* <rdar://problem/22139800> - Preserve the old behavior of apple[] for
- * programs that haven't linked against newer SDK.
+ /* <rdar://problem/22139800> - Preserve the old behavior of apple[] for
+ * programs that haven't linked against newer SDK.
*/
#define APPLE0_PREFIX "executable_path="
if (dyld_get_program_sdk_version() < DYLD_MACOSX_VERSION_10_11){
}
#endif
+ _libSystem_ktrace0(ARIADNE_LIFECYCLE_libsystem_init | DBG_FUNC_END);
+
/* <rdar://problem/11588042>
* C99 standard has the following in section 7.5(3):
* "The value of errno is zero at program startup, but is never set
// second call hardwired fork prepare handlers for Libsystem components
// in the _reverse_ order of library initalization above
+#if !TARGET_OS_DRIVERKIT
_libSC_info_fork_prepare();
xpc_atfork_prepare();
+#endif // !TARGET_OS_DRIVERKIT
dispatch_atfork_prepare();
+ _dyld_atfork_prepare();
+ cc_atfork_prepare();
_malloc_fork_prepare();
_pthread_atfork_prepare();
}
// in the order of library initalization above
_pthread_atfork_parent();
_malloc_fork_parent();
+ cc_atfork_parent();
+ _dyld_atfork_parent();
dispatch_atfork_parent();
+#if !TARGET_OS_DRIVERKIT
xpc_atfork_parent();
_libSC_info_fork_parent();
+#endif // !TARGET_OS_DRIVERKIT
// second call client parent handlers registered with pthread_atfork()
_pthread_atfork_parent_handlers();
{
// first call hardwired fork child handlers for Libsystem components
// in the order of library initalization above
- _dyld_fork_child();
- _pthread_atfork_child();
_mach_fork_child();
+ _pthread_atfork_child();
_malloc_fork_child();
+ cc_atfork_child();
_libc_fork_child(); // _arc4_fork_child calls malloc
+ _dyld_fork_child();
dispatch_atfork_child();
+#if !TARGET_OS_DRIVERKIT
#if defined(HAVE_SYSTEM_CORESERVICES)
_libcoreservices_fork_child();
#endif
_asl_fork_child();
_notify_fork_child();
xpc_atfork_child();
+#endif // !TARGET_OS_DRIVERKIT
_libtrace_fork_child();
+#if !TARGET_OS_DRIVERKIT
_libSC_info_fork_child();
+#endif // !TARGET_OS_DRIVERKIT
// second call client parent handlers registered with pthread_atfork()
_pthread_atfork_child_handlers();
}
#if CURRENT_VARIANT_asan
+#define DEFAULT_ASAN_OPTIONS "color=never" \
+ ":handle_segv=0:handle_sigbus=0:handle_sigill=0:handle_sigfpe=0" \
+ ":external_symbolizer_path=" \
+ ":log_path=stderr:log_exe_name=0" \
+ ":halt_on_error=0" \
+ ":print_module_map=2" \
+ ":start_deactivated=1" \
+ ":detect_odr_violation=0"
char dynamic_asan_opts[1024] = {0};
const char *__asan_default_options(void) {
+ char executable_path[4096] = {0};
+ uint32_t size = sizeof(executable_path);
+ const char *process_name = "";
+ if (_NSGetExecutablePath(executable_path, &size) == 0) {
+ process_name = strrchr(executable_path, '/') + 1;
+ }
+
int fd = open("/System/Library/Preferences/com.apple.asan.options", O_RDONLY);
if (fd != -1) {
ssize_t remaining_size = sizeof(dynamic_asan_opts) - 1;
}
}
- return "color=never:handle_segv=0:handle_sigbus=0:handle_sigill=0:handle_sigfpe=0";
+ return DEFAULT_ASAN_OPTIONS;
}
#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