| //===-- msan_interceptors.cc ----------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is a part of MemorySanitizer. |
| // |
| // Interceptors for standard library functions. |
| // |
| // FIXME: move as many interceptors as possible into |
| // sanitizer_common/sanitizer_common_interceptors.h |
| //===----------------------------------------------------------------------===// |
| |
| #include "interception/interception.h" |
| #include "msan.h" |
| #include "msan_chained_origin_depot.h" |
| #include "msan_origin.h" |
| #include "msan_report.h" |
| #include "msan_thread.h" |
| #include "msan_poisoning.h" |
| #include "sanitizer_common/sanitizer_platform_limits_posix.h" |
| #include "sanitizer_common/sanitizer_platform_limits_netbsd.h" |
| #include "sanitizer_common/sanitizer_allocator.h" |
| #include "sanitizer_common/sanitizer_allocator_interface.h" |
| #include "sanitizer_common/sanitizer_allocator_internal.h" |
| #include "sanitizer_common/sanitizer_atomic.h" |
| #include "sanitizer_common/sanitizer_common.h" |
| #include "sanitizer_common/sanitizer_errno.h" |
| #include "sanitizer_common/sanitizer_stackdepot.h" |
| #include "sanitizer_common/sanitizer_libc.h" |
| #include "sanitizer_common/sanitizer_linux.h" |
| #include "sanitizer_common/sanitizer_tls_get_addr.h" |
| |
| #if SANITIZER_NETBSD |
| #define fstat __fstat50 |
| #define gettimeofday __gettimeofday50 |
| #define getrusage __getrusage50 |
| #endif |
| |
| #include <stdarg.h> |
| // ACHTUNG! No other system header includes in this file. |
| // Ideally, we should get rid of stdarg.h as well. |
| |
| using namespace __msan; |
| |
| using __sanitizer::memory_order; |
| using __sanitizer::atomic_load; |
| using __sanitizer::atomic_store; |
| using __sanitizer::atomic_uintptr_t; |
| |
| DECLARE_REAL(SIZE_T, strlen, const char *s) |
| DECLARE_REAL(SIZE_T, strnlen, const char *s, SIZE_T maxlen) |
| DECLARE_REAL(void *, memcpy, void *dest, const void *src, uptr n) |
| DECLARE_REAL(void *, memset, void *dest, int c, uptr n) |
| |
| // True if this is a nested interceptor. |
| static THREADLOCAL int in_interceptor_scope; |
| |
| void __msan_scoped_disable_interceptor_checks() { ++in_interceptor_scope; } |
| void __msan_scoped_enable_interceptor_checks() { --in_interceptor_scope; } |
| |
| struct InterceptorScope { |
| InterceptorScope() { ++in_interceptor_scope; } |
| ~InterceptorScope() { --in_interceptor_scope; } |
| }; |
| |
| bool IsInInterceptorScope() { |
| return in_interceptor_scope; |
| } |
| |
| static uptr allocated_for_dlsym; |
| static const uptr kDlsymAllocPoolSize = 1024; |
| static uptr alloc_memory_for_dlsym[kDlsymAllocPoolSize]; |
| |
| static bool IsInDlsymAllocPool(const void *ptr) { |
| uptr off = (uptr)ptr - (uptr)alloc_memory_for_dlsym; |
| return off < sizeof(alloc_memory_for_dlsym); |
| } |
| |
| static void *AllocateFromLocalPool(uptr size_in_bytes) { |
| uptr size_in_words = RoundUpTo(size_in_bytes, kWordSize) / kWordSize; |
| void *mem = (void *)&alloc_memory_for_dlsym[allocated_for_dlsym]; |
| allocated_for_dlsym += size_in_words; |
| CHECK_LT(allocated_for_dlsym, kDlsymAllocPoolSize); |
| return mem; |
| } |
| |
| #define ENSURE_MSAN_INITED() do { \ |
| CHECK(!msan_init_is_running); \ |
| if (!msan_inited) { \ |
| __msan_init(); \ |
| } \ |
| } while (0) |
| |
| // Check that [x, x+n) range is unpoisoned. |
| #define CHECK_UNPOISONED_0(x, n) \ |
| do { \ |
| sptr __offset = __msan_test_shadow(x, n); \ |
| if (__msan::IsInSymbolizer()) break; \ |
| if (__offset >= 0 && __msan::flags()->report_umrs) { \ |
| GET_CALLER_PC_BP_SP; \ |
| (void)sp; \ |
| ReportUMRInsideAddressRange(__func__, x, n, __offset); \ |
| __msan::PrintWarningWithOrigin( \ |
| pc, bp, __msan_get_origin((const char *)x + __offset)); \ |
| if (__msan::flags()->halt_on_error) { \ |
| Printf("Exiting\n"); \ |
| Die(); \ |
| } \ |
| } \ |
| } while (0) |
| |
| // Check that [x, x+n) range is unpoisoned unless we are in a nested |
| // interceptor. |
| #define CHECK_UNPOISONED(x, n) \ |
| do { \ |
| if (!IsInInterceptorScope()) CHECK_UNPOISONED_0(x, n); \ |
| } while (0) |
| |
| #define CHECK_UNPOISONED_STRING_OF_LEN(x, len, n) \ |
| CHECK_UNPOISONED((x), \ |
| common_flags()->strict_string_checks ? (len) + 1 : (n) ) |
| |
| #define CHECK_UNPOISONED_STRING(x, n) \ |
| CHECK_UNPOISONED_STRING_OF_LEN((x), internal_strlen(x), (n)) |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(SIZE_T, fread_unlocked, void *ptr, SIZE_T size, SIZE_T nmemb, |
| void *file) { |
| ENSURE_MSAN_INITED(); |
| SIZE_T res = REAL(fread_unlocked)(ptr, size, nmemb, file); |
| if (res > 0) |
| __msan_unpoison(ptr, res *size); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_FREAD_UNLOCKED INTERCEPT_FUNCTION(fread_unlocked) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_FREAD_UNLOCKED |
| #endif |
| |
| #if !SANITIZER_NETBSD |
| INTERCEPTOR(void *, mempcpy, void *dest, const void *src, SIZE_T n) { |
| return (char *)__msan_memcpy(dest, src, n) + n; |
| } |
| #define MSAN_MAYBE_INTERCEPT_MEMPCPY INTERCEPT_FUNCTION(mempcpy) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_MEMPCPY |
| #endif |
| |
| INTERCEPTOR(void *, memccpy, void *dest, const void *src, int c, SIZE_T n) { |
| ENSURE_MSAN_INITED(); |
| void *res = REAL(memccpy)(dest, src, c, n); |
| CHECK(!res || (res >= dest && res <= (char *)dest + n)); |
| SIZE_T sz = res ? (char *)res - (char *)dest : n; |
| CHECK_UNPOISONED(src, sz); |
| __msan_unpoison(dest, sz); |
| return res; |
| } |
| |
| INTERCEPTOR(void *, bcopy, const void *src, void *dest, SIZE_T n) { |
| return __msan_memmove(dest, src, n); |
| } |
| |
| INTERCEPTOR(int, posix_memalign, void **memptr, SIZE_T alignment, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| CHECK_NE(memptr, 0); |
| int res = msan_posix_memalign(memptr, alignment, size, &stack); |
| if (!res) |
| __msan_unpoison(memptr, sizeof(*memptr)); |
| return res; |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(void *, memalign, SIZE_T alignment, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| return msan_memalign(alignment, size, &stack); |
| } |
| #define MSAN_MAYBE_INTERCEPT_MEMALIGN INTERCEPT_FUNCTION(memalign) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_MEMALIGN |
| #endif |
| |
| INTERCEPTOR(void *, aligned_alloc, SIZE_T alignment, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| return msan_aligned_alloc(alignment, size, &stack); |
| } |
| |
| #if !SANITIZER_NETBSD |
| INTERCEPTOR(void *, __libc_memalign, SIZE_T alignment, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| void *ptr = msan_memalign(alignment, size, &stack); |
| if (ptr) |
| DTLS_on_libc_memalign(ptr, size); |
| return ptr; |
| } |
| #define MSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN INTERCEPT_FUNCTION(__libc_memalign) |
| #else |
| #define MSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN |
| #endif |
| |
| INTERCEPTOR(void *, valloc, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| return msan_valloc(size, &stack); |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(void *, pvalloc, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| return msan_pvalloc(size, &stack); |
| } |
| #define MSAN_MAYBE_INTERCEPT_PVALLOC INTERCEPT_FUNCTION(pvalloc) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_PVALLOC |
| #endif |
| |
| INTERCEPTOR(void, free, void *ptr) { |
| GET_MALLOC_STACK_TRACE; |
| if (!ptr || UNLIKELY(IsInDlsymAllocPool(ptr))) return; |
| MsanDeallocate(&stack, ptr); |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(void, cfree, void *ptr) { |
| GET_MALLOC_STACK_TRACE; |
| if (!ptr || UNLIKELY(IsInDlsymAllocPool(ptr))) return; |
| MsanDeallocate(&stack, ptr); |
| } |
| #define MSAN_MAYBE_INTERCEPT_CFREE INTERCEPT_FUNCTION(cfree) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_CFREE |
| #endif |
| |
| #if !SANITIZER_NETBSD |
| INTERCEPTOR(uptr, malloc_usable_size, void *ptr) { |
| return __sanitizer_get_allocated_size(ptr); |
| } |
| #define MSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE \ |
| INTERCEPT_FUNCTION(malloc_usable_size) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE |
| #endif |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| // This function actually returns a struct by value, but we can't unpoison a |
| // temporary! The following is equivalent on all supported platforms but |
| // aarch64 (which uses a different register for sret value). We have a test |
| // to confirm that. |
| INTERCEPTOR(void, mallinfo, __sanitizer_mallinfo *sret) { |
| #ifdef __aarch64__ |
| uptr r8; |
| asm volatile("mov %0,x8" : "=r" (r8)); |
| sret = reinterpret_cast<__sanitizer_mallinfo*>(r8); |
| #endif |
| REAL(memset)(sret, 0, sizeof(*sret)); |
| __msan_unpoison(sret, sizeof(*sret)); |
| } |
| #define MSAN_MAYBE_INTERCEPT_MALLINFO INTERCEPT_FUNCTION(mallinfo) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_MALLINFO |
| #endif |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(int, mallopt, int cmd, int value) { |
| return -1; |
| } |
| #define MSAN_MAYBE_INTERCEPT_MALLOPT INTERCEPT_FUNCTION(mallopt) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_MALLOPT |
| #endif |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(void, malloc_stats, void) { |
| // FIXME: implement, but don't call REAL(malloc_stats)! |
| } |
| #define MSAN_MAYBE_INTERCEPT_MALLOC_STATS INTERCEPT_FUNCTION(malloc_stats) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_MALLOC_STATS |
| #endif |
| |
| INTERCEPTOR(char *, strcpy, char *dest, const char *src) { // NOLINT |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| SIZE_T n = REAL(strlen)(src); |
| CHECK_UNPOISONED_STRING(src + n, 0); |
| char *res = REAL(strcpy)(dest, src); // NOLINT |
| CopyShadowAndOrigin(dest, src, n + 1, &stack); |
| return res; |
| } |
| |
| INTERCEPTOR(char *, strncpy, char *dest, const char *src, SIZE_T n) { // NOLINT |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| SIZE_T copy_size = REAL(strnlen)(src, n); |
| if (copy_size < n) |
| copy_size++; // trailing \0 |
| char *res = REAL(strncpy)(dest, src, n); // NOLINT |
| CopyShadowAndOrigin(dest, src, copy_size, &stack); |
| __msan_unpoison(dest + copy_size, n - copy_size); |
| return res; |
| } |
| |
| #if !SANITIZER_NETBSD |
| INTERCEPTOR(char *, stpcpy, char *dest, const char *src) { // NOLINT |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| SIZE_T n = REAL(strlen)(src); |
| CHECK_UNPOISONED_STRING(src + n, 0); |
| char *res = REAL(stpcpy)(dest, src); // NOLINT |
| CopyShadowAndOrigin(dest, src, n + 1, &stack); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_STPCPY INTERCEPT_FUNCTION(stpcpy) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_STPCPY |
| #endif |
| |
| INTERCEPTOR(char *, strdup, char *src) { |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| // On FreeBSD strdup() leverages strlen(). |
| InterceptorScope interceptor_scope; |
| SIZE_T n = REAL(strlen)(src); |
| CHECK_UNPOISONED_STRING(src + n, 0); |
| char *res = REAL(strdup)(src); |
| CopyShadowAndOrigin(res, src, n + 1, &stack); |
| return res; |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(char *, __strdup, char *src) { |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| SIZE_T n = REAL(strlen)(src); |
| CHECK_UNPOISONED_STRING(src + n, 0); |
| char *res = REAL(__strdup)(src); |
| CopyShadowAndOrigin(res, src, n + 1, &stack); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT___STRDUP INTERCEPT_FUNCTION(__strdup) |
| #else |
| #define MSAN_MAYBE_INTERCEPT___STRDUP |
| #endif |
| |
| #if !SANITIZER_NETBSD |
| INTERCEPTOR(char *, gcvt, double number, SIZE_T ndigit, char *buf) { |
| ENSURE_MSAN_INITED(); |
| char *res = REAL(gcvt)(number, ndigit, buf); |
| SIZE_T n = REAL(strlen)(buf); |
| __msan_unpoison(buf, n + 1); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_GCVT INTERCEPT_FUNCTION(gcvt) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_GCVT |
| #endif |
| |
| INTERCEPTOR(char *, strcat, char *dest, const char *src) { // NOLINT |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| SIZE_T src_size = REAL(strlen)(src); |
| SIZE_T dest_size = REAL(strlen)(dest); |
| CHECK_UNPOISONED_STRING(src + src_size, 0); |
| CHECK_UNPOISONED_STRING(dest + dest_size, 0); |
| char *res = REAL(strcat)(dest, src); // NOLINT |
| CopyShadowAndOrigin(dest + dest_size, src, src_size + 1, &stack); |
| return res; |
| } |
| |
| INTERCEPTOR(char *, strncat, char *dest, const char *src, SIZE_T n) { // NOLINT |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| SIZE_T dest_size = REAL(strlen)(dest); |
| SIZE_T copy_size = REAL(strnlen)(src, n); |
| CHECK_UNPOISONED_STRING(dest + dest_size, 0); |
| char *res = REAL(strncat)(dest, src, n); // NOLINT |
| CopyShadowAndOrigin(dest + dest_size, src, copy_size, &stack); |
| __msan_unpoison(dest + dest_size + copy_size, 1); // \0 |
| return res; |
| } |
| |
| // Hack: always pass nptr and endptr as part of __VA_ARGS_ to avoid having to |
| // deal with empty __VA_ARGS__ in the case of INTERCEPTOR_STRTO. |
| #define INTERCEPTOR_STRTO_BODY(ret_type, func, ...) \ |
| ENSURE_MSAN_INITED(); \ |
| ret_type res = REAL(func)(__VA_ARGS__); \ |
| __msan_unpoison(endptr, sizeof(*endptr)); \ |
| return res; |
| |
| #define INTERCEPTOR_STRTO(ret_type, func, char_type) \ |
| INTERCEPTOR(ret_type, func, const char_type *nptr, char_type **endptr) { \ |
| INTERCEPTOR_STRTO_BODY(ret_type, func, nptr, endptr); \ |
| } |
| |
| #define INTERCEPTOR_STRTO_BASE(ret_type, func, char_type) \ |
| INTERCEPTOR(ret_type, func, const char_type *nptr, char_type **endptr, \ |
| int base) { \ |
| INTERCEPTOR_STRTO_BODY(ret_type, func, nptr, endptr, base); \ |
| } |
| |
| #define INTERCEPTOR_STRTO_LOC(ret_type, func, char_type) \ |
| INTERCEPTOR(ret_type, func, const char_type *nptr, char_type **endptr, \ |
| void *loc) { \ |
| INTERCEPTOR_STRTO_BODY(ret_type, func, nptr, endptr, loc); \ |
| } |
| |
| #define INTERCEPTOR_STRTO_BASE_LOC(ret_type, func, char_type) \ |
| INTERCEPTOR(ret_type, func, const char_type *nptr, char_type **endptr, \ |
| int base, void *loc) { \ |
| INTERCEPTOR_STRTO_BODY(ret_type, func, nptr, endptr, base, loc); \ |
| } |
| |
| #if SANITIZER_NETBSD |
| #define INTERCEPTORS_STRTO(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO_LOC(ret_type, func##_l, char_type) |
| |
| #define INTERCEPTORS_STRTO_BASE(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO_BASE(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO_BASE_LOC(ret_type, func##_l, char_type) |
| |
| #else |
| #define INTERCEPTORS_STRTO(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO_LOC(ret_type, func##_l, char_type) \ |
| INTERCEPTOR_STRTO_LOC(ret_type, __##func##_l, char_type) \ |
| INTERCEPTOR_STRTO_LOC(ret_type, __##func##_internal, char_type) |
| |
| #define INTERCEPTORS_STRTO_BASE(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO_BASE(ret_type, func, char_type) \ |
| INTERCEPTOR_STRTO_BASE_LOC(ret_type, func##_l, char_type) \ |
| INTERCEPTOR_STRTO_BASE_LOC(ret_type, __##func##_l, char_type) \ |
| INTERCEPTOR_STRTO_BASE_LOC(ret_type, __##func##_internal, char_type) |
| #endif |
| |
| INTERCEPTORS_STRTO(double, strtod, char) // NOLINT |
| INTERCEPTORS_STRTO(float, strtof, char) // NOLINT |
| INTERCEPTORS_STRTO(long double, strtold, char) // NOLINT |
| INTERCEPTORS_STRTO_BASE(long, strtol, char) // NOLINT |
| INTERCEPTORS_STRTO_BASE(long long, strtoll, char) // NOLINT |
| INTERCEPTORS_STRTO_BASE(unsigned long, strtoul, char) // NOLINT |
| INTERCEPTORS_STRTO_BASE(unsigned long long, strtoull, char) // NOLINT |
| INTERCEPTORS_STRTO_BASE(u64, strtouq, char) // NOLINT |
| |
| INTERCEPTORS_STRTO(double, wcstod, wchar_t) // NOLINT |
| INTERCEPTORS_STRTO(float, wcstof, wchar_t) // NOLINT |
| INTERCEPTORS_STRTO(long double, wcstold, wchar_t) // NOLINT |
| INTERCEPTORS_STRTO_BASE(long, wcstol, wchar_t) // NOLINT |
| INTERCEPTORS_STRTO_BASE(long long, wcstoll, wchar_t) // NOLINT |
| INTERCEPTORS_STRTO_BASE(unsigned long, wcstoul, wchar_t) // NOLINT |
| INTERCEPTORS_STRTO_BASE(unsigned long long, wcstoull, wchar_t) // NOLINT |
| |
| #if SANITIZER_NETBSD |
| #define INTERCEPT_STRTO(func) \ |
| INTERCEPT_FUNCTION(func); \ |
| INTERCEPT_FUNCTION(func##_l); |
| #else |
| #define INTERCEPT_STRTO(func) \ |
| INTERCEPT_FUNCTION(func); \ |
| INTERCEPT_FUNCTION(func##_l); \ |
| INTERCEPT_FUNCTION(__##func##_l); \ |
| INTERCEPT_FUNCTION(__##func##_internal); |
| #endif |
| |
| |
| // FIXME: support *wprintf in common format interceptors. |
| INTERCEPTOR(int, vswprintf, void *str, uptr size, void *format, va_list ap) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(vswprintf)(str, size, format, ap); |
| if (res >= 0) { |
| __msan_unpoison(str, 4 * (res + 1)); |
| } |
| return res; |
| } |
| |
| INTERCEPTOR(int, swprintf, void *str, uptr size, void *format, ...) { |
| ENSURE_MSAN_INITED(); |
| va_list ap; |
| va_start(ap, format); |
| int res = vswprintf(str, size, format, ap); |
| va_end(ap); |
| return res; |
| } |
| |
| #define INTERCEPTOR_STRFTIME_BODY(char_type, ret_type, func, s, ...) \ |
| ENSURE_MSAN_INITED(); \ |
| InterceptorScope interceptor_scope; \ |
| ret_type res = REAL(func)(s, __VA_ARGS__); \ |
| if (s) __msan_unpoison(s, sizeof(char_type) * (res + 1)); \ |
| return res; |
| |
| INTERCEPTOR(SIZE_T, strftime, char *s, SIZE_T max, const char *format, |
| __sanitizer_tm *tm) { |
| INTERCEPTOR_STRFTIME_BODY(char, SIZE_T, strftime, s, max, format, tm); |
| } |
| |
| INTERCEPTOR(SIZE_T, strftime_l, char *s, SIZE_T max, const char *format, |
| __sanitizer_tm *tm, void *loc) { |
| INTERCEPTOR_STRFTIME_BODY(char, SIZE_T, strftime_l, s, max, format, tm, loc); |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(SIZE_T, __strftime_l, char *s, SIZE_T max, const char *format, |
| __sanitizer_tm *tm, void *loc) { |
| INTERCEPTOR_STRFTIME_BODY(char, SIZE_T, __strftime_l, s, max, format, tm, |
| loc); |
| } |
| #define MSAN_MAYBE_INTERCEPT___STRFTIME_L INTERCEPT_FUNCTION(__strftime_l) |
| #else |
| #define MSAN_MAYBE_INTERCEPT___STRFTIME_L |
| #endif |
| |
| INTERCEPTOR(SIZE_T, wcsftime, wchar_t *s, SIZE_T max, const wchar_t *format, |
| __sanitizer_tm *tm) { |
| INTERCEPTOR_STRFTIME_BODY(wchar_t, SIZE_T, wcsftime, s, max, format, tm); |
| } |
| |
| INTERCEPTOR(SIZE_T, wcsftime_l, wchar_t *s, SIZE_T max, const wchar_t *format, |
| __sanitizer_tm *tm, void *loc) { |
| INTERCEPTOR_STRFTIME_BODY(wchar_t, SIZE_T, wcsftime_l, s, max, format, tm, |
| loc); |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(SIZE_T, __wcsftime_l, wchar_t *s, SIZE_T max, const wchar_t *format, |
| __sanitizer_tm *tm, void *loc) { |
| INTERCEPTOR_STRFTIME_BODY(wchar_t, SIZE_T, __wcsftime_l, s, max, format, tm, |
| loc); |
| } |
| #define MSAN_MAYBE_INTERCEPT___WCSFTIME_L INTERCEPT_FUNCTION(__wcsftime_l) |
| #else |
| #define MSAN_MAYBE_INTERCEPT___WCSFTIME_L |
| #endif |
| |
| INTERCEPTOR(int, mbtowc, wchar_t *dest, const char *src, SIZE_T n) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(mbtowc)(dest, src, n); |
| if (res != -1 && dest) __msan_unpoison(dest, sizeof(wchar_t)); |
| return res; |
| } |
| |
| INTERCEPTOR(SIZE_T, mbrtowc, wchar_t *dest, const char *src, SIZE_T n, |
| void *ps) { |
| ENSURE_MSAN_INITED(); |
| SIZE_T res = REAL(mbrtowc)(dest, src, n, ps); |
| if (res != (SIZE_T)-1 && dest) __msan_unpoison(dest, sizeof(wchar_t)); |
| return res; |
| } |
| |
| // wchar_t *wmemcpy(wchar_t *dest, const wchar_t *src, SIZE_T n); |
| INTERCEPTOR(wchar_t *, wmemcpy, wchar_t *dest, const wchar_t *src, SIZE_T n) { |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| wchar_t *res = REAL(wmemcpy)(dest, src, n); |
| CopyShadowAndOrigin(dest, src, n * sizeof(wchar_t), &stack); |
| return res; |
| } |
| |
| #if !SANITIZER_NETBSD |
| INTERCEPTOR(wchar_t *, wmempcpy, wchar_t *dest, const wchar_t *src, SIZE_T n) { |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| wchar_t *res = REAL(wmempcpy)(dest, src, n); |
| CopyShadowAndOrigin(dest, src, n * sizeof(wchar_t), &stack); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_WMEMPCPY INTERCEPT_FUNCTION(wmempcpy) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_WMEMPCPY |
| #endif |
| |
| INTERCEPTOR(wchar_t *, wmemset, wchar_t *s, wchar_t c, SIZE_T n) { |
| CHECK(MEM_IS_APP(s)); |
| ENSURE_MSAN_INITED(); |
| wchar_t *res = REAL(wmemset)(s, c, n); |
| __msan_unpoison(s, n * sizeof(wchar_t)); |
| return res; |
| } |
| |
| INTERCEPTOR(wchar_t *, wmemmove, wchar_t *dest, const wchar_t *src, SIZE_T n) { |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| wchar_t *res = REAL(wmemmove)(dest, src, n); |
| MoveShadowAndOrigin(dest, src, n * sizeof(wchar_t), &stack); |
| return res; |
| } |
| |
| INTERCEPTOR(int, wcscmp, const wchar_t *s1, const wchar_t *s2) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(wcscmp)(s1, s2); |
| return res; |
| } |
| |
| INTERCEPTOR(int, gettimeofday, void *tv, void *tz) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(gettimeofday)(tv, tz); |
| if (tv) |
| __msan_unpoison(tv, 16); |
| if (tz) |
| __msan_unpoison(tz, 8); |
| return res; |
| } |
| |
| #if !SANITIZER_NETBSD |
| INTERCEPTOR(char *, fcvt, double x, int a, int *b, int *c) { |
| ENSURE_MSAN_INITED(); |
| char *res = REAL(fcvt)(x, a, b, c); |
| __msan_unpoison(b, sizeof(*b)); |
| __msan_unpoison(c, sizeof(*c)); |
| if (res) __msan_unpoison(res, REAL(strlen)(res) + 1); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_FCVT INTERCEPT_FUNCTION(fcvt) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_FCVT |
| #endif |
| |
| INTERCEPTOR(char *, getenv, char *name) { |
| if (msan_init_is_running) |
| return REAL(getenv)(name); |
| ENSURE_MSAN_INITED(); |
| char *res = REAL(getenv)(name); |
| if (res) __msan_unpoison(res, REAL(strlen)(res) + 1); |
| return res; |
| } |
| |
| extern char **environ; |
| |
| static void UnpoisonEnviron() { |
| char **envp = environ; |
| for (; *envp; ++envp) { |
| __msan_unpoison(envp, sizeof(*envp)); |
| __msan_unpoison(*envp, REAL(strlen)(*envp) + 1); |
| } |
| // Trailing NULL pointer. |
| __msan_unpoison(envp, sizeof(*envp)); |
| } |
| |
| INTERCEPTOR(int, setenv, const char *name, const char *value, int overwrite) { |
| ENSURE_MSAN_INITED(); |
| CHECK_UNPOISONED_STRING(name, 0); |
| int res = REAL(setenv)(name, value, overwrite); |
| if (!res) UnpoisonEnviron(); |
| return res; |
| } |
| |
| INTERCEPTOR(int, putenv, char *string) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(putenv)(string); |
| if (!res) UnpoisonEnviron(); |
| return res; |
| } |
| |
| #if SANITIZER_FREEBSD || SANITIZER_NETBSD |
| INTERCEPTOR(int, fstat, int fd, void *buf) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(fstat)(fd, buf); |
| if (!res) |
| __msan_unpoison(buf, __sanitizer::struct_stat_sz); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_FSTAT INTERCEPT_FUNCTION(fstat) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_FSTAT |
| #endif |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(int, __fxstat, int magic, int fd, void *buf) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(__fxstat)(magic, fd, buf); |
| if (!res) |
| __msan_unpoison(buf, __sanitizer::struct_stat_sz); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT___FXSTAT INTERCEPT_FUNCTION(__fxstat) |
| #else |
| #define MSAN_MAYBE_INTERCEPT___FXSTAT |
| #endif |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(int, __fxstat64, int magic, int fd, void *buf) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(__fxstat64)(magic, fd, buf); |
| if (!res) |
| __msan_unpoison(buf, __sanitizer::struct_stat64_sz); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT___FXSTAT64 INTERCEPT_FUNCTION(__fxstat64) |
| #else |
| #define MSAN_MAYBE_INTERCEPT___FXSTAT64 |
| #endif |
| |
| #if SANITIZER_FREEBSD || SANITIZER_NETBSD |
| INTERCEPTOR(int, fstatat, int fd, char *pathname, void *buf, int flags) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(fstatat)(fd, pathname, buf, flags); |
| if (!res) __msan_unpoison(buf, __sanitizer::struct_stat_sz); |
| return res; |
| } |
| # define MSAN_INTERCEPT_FSTATAT INTERCEPT_FUNCTION(fstatat) |
| #else |
| INTERCEPTOR(int, __fxstatat, int magic, int fd, char *pathname, void *buf, |
| int flags) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(__fxstatat)(magic, fd, pathname, buf, flags); |
| if (!res) __msan_unpoison(buf, __sanitizer::struct_stat_sz); |
| return res; |
| } |
| # define MSAN_INTERCEPT_FSTATAT INTERCEPT_FUNCTION(__fxstatat) |
| #endif |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(int, __fxstatat64, int magic, int fd, char *pathname, void *buf, |
| int flags) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(__fxstatat64)(magic, fd, pathname, buf, flags); |
| if (!res) __msan_unpoison(buf, __sanitizer::struct_stat64_sz); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT___FXSTATAT64 INTERCEPT_FUNCTION(__fxstatat64) |
| #else |
| #define MSAN_MAYBE_INTERCEPT___FXSTATAT64 |
| #endif |
| |
| INTERCEPTOR(int, pipe, int pipefd[2]) { |
| if (msan_init_is_running) |
| return REAL(pipe)(pipefd); |
| ENSURE_MSAN_INITED(); |
| int res = REAL(pipe)(pipefd); |
| if (!res) |
| __msan_unpoison(pipefd, sizeof(int[2])); |
| return res; |
| } |
| |
| INTERCEPTOR(int, pipe2, int pipefd[2], int flags) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(pipe2)(pipefd, flags); |
| if (!res) |
| __msan_unpoison(pipefd, sizeof(int[2])); |
| return res; |
| } |
| |
| INTERCEPTOR(int, socketpair, int domain, int type, int protocol, int sv[2]) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(socketpair)(domain, type, protocol, sv); |
| if (!res) |
| __msan_unpoison(sv, sizeof(int[2])); |
| return res; |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(char *, fgets_unlocked, char *s, int size, void *stream) { |
| ENSURE_MSAN_INITED(); |
| char *res = REAL(fgets_unlocked)(s, size, stream); |
| if (res) |
| __msan_unpoison(s, REAL(strlen)(s) + 1); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_FGETS_UNLOCKED INTERCEPT_FUNCTION(fgets_unlocked) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_FGETS_UNLOCKED |
| #endif |
| |
| INTERCEPTOR(int, getrlimit, int resource, void *rlim) { |
| if (msan_init_is_running) |
| return REAL(getrlimit)(resource, rlim); |
| ENSURE_MSAN_INITED(); |
| int res = REAL(getrlimit)(resource, rlim); |
| if (!res) |
| __msan_unpoison(rlim, __sanitizer::struct_rlimit_sz); |
| return res; |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(int, getrlimit64, int resource, void *rlim) { |
| if (msan_init_is_running) return REAL(getrlimit64)(resource, rlim); |
| ENSURE_MSAN_INITED(); |
| int res = REAL(getrlimit64)(resource, rlim); |
| if (!res) __msan_unpoison(rlim, __sanitizer::struct_rlimit64_sz); |
| return res; |
| } |
| |
| INTERCEPTOR(int, prlimit, int pid, int resource, void *new_rlimit, |
| void *old_rlimit) { |
| if (msan_init_is_running) |
| return REAL(prlimit)(pid, resource, new_rlimit, old_rlimit); |
| ENSURE_MSAN_INITED(); |
| CHECK_UNPOISONED(new_rlimit, __sanitizer::struct_rlimit_sz); |
| int res = REAL(prlimit)(pid, resource, new_rlimit, old_rlimit); |
| if (!res) __msan_unpoison(old_rlimit, __sanitizer::struct_rlimit_sz); |
| return res; |
| } |
| |
| INTERCEPTOR(int, prlimit64, int pid, int resource, void *new_rlimit, |
| void *old_rlimit) { |
| if (msan_init_is_running) |
| return REAL(prlimit64)(pid, resource, new_rlimit, old_rlimit); |
| ENSURE_MSAN_INITED(); |
| CHECK_UNPOISONED(new_rlimit, __sanitizer::struct_rlimit64_sz); |
| int res = REAL(prlimit64)(pid, resource, new_rlimit, old_rlimit); |
| if (!res) __msan_unpoison(old_rlimit, __sanitizer::struct_rlimit64_sz); |
| return res; |
| } |
| |
| #define MSAN_MAYBE_INTERCEPT_GETRLIMIT64 INTERCEPT_FUNCTION(getrlimit64) |
| #define MSAN_MAYBE_INTERCEPT_PRLIMIT INTERCEPT_FUNCTION(prlimit) |
| #define MSAN_MAYBE_INTERCEPT_PRLIMIT64 INTERCEPT_FUNCTION(prlimit64) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_GETRLIMIT64 |
| #define MSAN_MAYBE_INTERCEPT_PRLIMIT |
| #define MSAN_MAYBE_INTERCEPT_PRLIMIT64 |
| #endif |
| |
| #if SANITIZER_FREEBSD |
| // FreeBSD's <sys/utsname.h> define uname() as |
| // static __inline int uname(struct utsname *name) { |
| // return __xuname(SYS_NMLN, (void*)name); |
| // } |
| INTERCEPTOR(int, __xuname, int size, void *utsname) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(__xuname)(size, utsname); |
| if (!res) |
| __msan_unpoison(utsname, __sanitizer::struct_utsname_sz); |
| return res; |
| } |
| #define MSAN_INTERCEPT_UNAME INTERCEPT_FUNCTION(__xuname) |
| #else |
| INTERCEPTOR(int, uname, struct utsname *utsname) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(uname)(utsname); |
| if (!res) |
| __msan_unpoison(utsname, __sanitizer::struct_utsname_sz); |
| return res; |
| } |
| #define MSAN_INTERCEPT_UNAME INTERCEPT_FUNCTION(uname) |
| #endif |
| |
| INTERCEPTOR(int, gethostname, char *name, SIZE_T len) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(gethostname)(name, len); |
| if (!res) { |
| SIZE_T real_len = REAL(strnlen)(name, len); |
| if (real_len < len) |
| ++real_len; |
| __msan_unpoison(name, real_len); |
| } |
| return res; |
| } |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(int, epoll_wait, int epfd, void *events, int maxevents, |
| int timeout) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(epoll_wait)(epfd, events, maxevents, timeout); |
| if (res > 0) { |
| __msan_unpoison(events, __sanitizer::struct_epoll_event_sz * res); |
| } |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_EPOLL_WAIT INTERCEPT_FUNCTION(epoll_wait) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_EPOLL_WAIT |
| #endif |
| |
| #if !SANITIZER_FREEBSD && !SANITIZER_NETBSD |
| INTERCEPTOR(int, epoll_pwait, int epfd, void *events, int maxevents, |
| int timeout, void *sigmask) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(epoll_pwait)(epfd, events, maxevents, timeout, sigmask); |
| if (res > 0) { |
| __msan_unpoison(events, __sanitizer::struct_epoll_event_sz * res); |
| } |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_EPOLL_PWAIT INTERCEPT_FUNCTION(epoll_pwait) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_EPOLL_PWAIT |
| #endif |
| |
| INTERCEPTOR(void *, calloc, SIZE_T nmemb, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| if (UNLIKELY(!msan_inited)) |
| // Hack: dlsym calls calloc before REAL(calloc) is retrieved from dlsym. |
| return AllocateFromLocalPool(nmemb * size); |
| return msan_calloc(nmemb, size, &stack); |
| } |
| |
| INTERCEPTOR(void *, realloc, void *ptr, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| if (UNLIKELY(IsInDlsymAllocPool(ptr))) { |
| uptr offset = (uptr)ptr - (uptr)alloc_memory_for_dlsym; |
| uptr copy_size = Min(size, kDlsymAllocPoolSize - offset); |
| void *new_ptr; |
| if (UNLIKELY(!msan_inited)) { |
| new_ptr = AllocateFromLocalPool(copy_size); |
| } else { |
| copy_size = size; |
| new_ptr = msan_malloc(copy_size, &stack); |
| } |
| internal_memcpy(new_ptr, ptr, copy_size); |
| return new_ptr; |
| } |
| return msan_realloc(ptr, size, &stack); |
| } |
| |
| INTERCEPTOR(void *, malloc, SIZE_T size) { |
| GET_MALLOC_STACK_TRACE; |
| if (UNLIKELY(!msan_inited)) |
| // Hack: dlsym calls malloc before REAL(malloc) is retrieved from dlsym. |
| return AllocateFromLocalPool(size); |
| return msan_malloc(size, &stack); |
| } |
| |
| void __msan_allocated_memory(const void *data, uptr size) { |
| GET_MALLOC_STACK_TRACE; |
| if (flags()->poison_in_malloc) { |
| stack.tag = STACK_TRACE_TAG_POISON; |
| PoisonMemory(data, size, &stack); |
| } |
| } |
| |
| void __msan_copy_shadow(void *dest, const void *src, uptr n) { |
| GET_STORE_STACK_TRACE; |
| MoveShadowAndOrigin(dest, src, n, &stack); |
| } |
| |
| void __sanitizer_dtor_callback(const void *data, uptr size) { |
| GET_MALLOC_STACK_TRACE; |
| if (flags()->poison_in_dtor) { |
| stack.tag = STACK_TRACE_TAG_POISON; |
| PoisonMemory(data, size, &stack); |
| } |
| } |
| |
| template <class Mmap> |
| static void *mmap_interceptor(Mmap real_mmap, void *addr, SIZE_T length, |
| int prot, int flags, int fd, OFF64_T offset) { |
| if (addr && !MEM_IS_APP(addr)) { |
| if (flags & map_fixed) { |
| errno = errno_EINVAL; |
| return (void *)-1; |
| } else { |
| addr = nullptr; |
| } |
| } |
| void *res = real_mmap(addr, length, prot, flags, fd, offset); |
| if (res != (void *)-1) __msan_unpoison(res, RoundUpTo(length, GetPageSize())); |
| return res; |
| } |
| |
| INTERCEPTOR(int, getrusage, int who, void *usage) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(getrusage)(who, usage); |
| if (res == 0) { |
| __msan_unpoison(usage, __sanitizer::struct_rusage_sz); |
| } |
| return res; |
| } |
| |
| class SignalHandlerScope { |
| public: |
| SignalHandlerScope() { |
| if (MsanThread *t = GetCurrentThread()) |
| t->EnterSignalHandler(); |
| } |
| ~SignalHandlerScope() { |
| if (MsanThread *t = GetCurrentThread()) |
| t->LeaveSignalHandler(); |
| } |
| }; |
| |
| // sigactions_mu guarantees atomicity of sigaction() and signal() calls. |
| // Access to sigactions[] is gone with relaxed atomics to avoid data race with |
| // the signal handler. |
| const int kMaxSignals = 1024; |
| static atomic_uintptr_t sigactions[kMaxSignals]; |
| static StaticSpinMutex sigactions_mu; |
| |
| static void SignalHandler(int signo) { |
| SignalHandlerScope signal_handler_scope; |
| ScopedThreadLocalStateBackup stlsb; |
| UnpoisonParam(1); |
| |
| typedef void (*signal_cb)(int x); |
| signal_cb cb = |
| (signal_cb)atomic_load(&sigactions[signo], memory_order_relaxed); |
| cb(signo); |
| } |
| |
| static void SignalAction(int signo, void *si, void *uc) { |
| SignalHandlerScope signal_handler_scope; |
| ScopedThreadLocalStateBackup stlsb; |
| UnpoisonParam(3); |
| __msan_unpoison(si, sizeof(__sanitizer_sigaction)); |
| __msan_unpoison(uc, __sanitizer::ucontext_t_sz); |
| |
| typedef void (*sigaction_cb)(int, void *, void *); |
| sigaction_cb cb = |
| (sigaction_cb)atomic_load(&sigactions[signo], memory_order_relaxed); |
| cb(signo, si, uc); |
| } |
| |
| static void read_sigaction(const __sanitizer_sigaction *act) { |
| CHECK_UNPOISONED(&act->sa_flags, sizeof(act->sa_flags)); |
| if (act->sa_flags & __sanitizer::sa_siginfo) |
| CHECK_UNPOISONED(&act->sigaction, sizeof(act->sigaction)); |
| else |
| CHECK_UNPOISONED(&act->handler, sizeof(act->handler)); |
| CHECK_UNPOISONED(&act->sa_mask, sizeof(act->sa_mask)); |
| } |
| |
| extern "C" int pthread_attr_init(void *attr); |
| extern "C" int pthread_attr_destroy(void *attr); |
| |
| static void *MsanThreadStartFunc(void *arg) { |
| MsanThread *t = (MsanThread *)arg; |
| SetCurrentThread(t); |
| return t->ThreadStart(); |
| } |
| |
| INTERCEPTOR(int, pthread_create, void *th, void *attr, void *(*callback)(void*), |
| void * param) { |
| ENSURE_MSAN_INITED(); // for GetTlsSize() |
| __sanitizer_pthread_attr_t myattr; |
| if (!attr) { |
| pthread_attr_init(&myattr); |
| attr = &myattr; |
| } |
| |
| AdjustStackSize(attr); |
| |
| MsanThread *t = MsanThread::Create(callback, param); |
| |
| int res = REAL(pthread_create)(th, attr, MsanThreadStartFunc, t); |
| |
| if (attr == &myattr) |
| pthread_attr_destroy(&myattr); |
| if (!res) { |
| __msan_unpoison(th, __sanitizer::pthread_t_sz); |
| } |
| return res; |
| } |
| |
| INTERCEPTOR(int, pthread_key_create, __sanitizer_pthread_key_t *key, |
| void (*dtor)(void *value)) { |
| if (msan_init_is_running) return REAL(pthread_key_create)(key, dtor); |
| ENSURE_MSAN_INITED(); |
| int res = REAL(pthread_key_create)(key, dtor); |
| if (!res && key) |
| __msan_unpoison(key, sizeof(*key)); |
| return res; |
| } |
| |
| #if SANITIZER_NETBSD |
| INTERCEPTOR(void, __libc_thr_keycreate, void *m, void (*dtor)(void *value)) \ |
| ALIAS(WRAPPER_NAME(pthread_key_create)); |
| #endif |
| |
| INTERCEPTOR(int, pthread_join, void *th, void **retval) { |
| ENSURE_MSAN_INITED(); |
| int res = REAL(pthread_join)(th, retval); |
| if (!res && retval) |
| __msan_unpoison(retval, sizeof(*retval)); |
| return res; |
| } |
| |
| extern char *tzname[2]; |
| |
| INTERCEPTOR(void, tzset, int fake) { |
| ENSURE_MSAN_INITED(); |
| REAL(tzset)(fake); |
| if (tzname[0]) |
| __msan_unpoison(tzname[0], REAL(strlen)(tzname[0]) + 1); |
| if (tzname[1]) |
| __msan_unpoison(tzname[1], REAL(strlen)(tzname[1]) + 1); |
| return; |
| } |
| |
| struct MSanAtExitRecord { |
| void (*func)(void *arg); |
| void *arg; |
| }; |
| |
| void MSanAtExitWrapper(void *arg) { |
| UnpoisonParam(1); |
| MSanAtExitRecord *r = (MSanAtExitRecord *)arg; |
| r->func(r->arg); |
| InternalFree(r); |
| } |
| |
| // Unpoison argument shadow for C++ module destructors. |
| INTERCEPTOR(int, __cxa_atexit, void (*func)(void *), void *arg, |
| void *dso_handle) { |
| if (msan_init_is_running) return REAL(__cxa_atexit)(func, arg, dso_handle); |
| ENSURE_MSAN_INITED(); |
| MSanAtExitRecord *r = |
| (MSanAtExitRecord *)InternalAlloc(sizeof(MSanAtExitRecord)); |
| r->func = func; |
| r->arg = arg; |
| return REAL(__cxa_atexit)(MSanAtExitWrapper, r, dso_handle); |
| } |
| |
| static void BeforeFork() { |
| StackDepotLockAll(); |
| ChainedOriginDepotLockAll(); |
| } |
| |
| static void AfterFork() { |
| ChainedOriginDepotUnlockAll(); |
| StackDepotUnlockAll(); |
| } |
| |
| INTERCEPTOR(int, fork, void) { |
| ENSURE_MSAN_INITED(); |
| BeforeFork(); |
| int pid = REAL(fork)(); |
| AfterFork(); |
| return pid; |
| } |
| |
| // NetBSD ships with openpty(3) in -lutil, that needs to be prebuilt explicitly |
| // with MSan. |
| #if SANITIZER_LINUX |
| INTERCEPTOR(int, openpty, int *amaster, int *aslave, char *name, |
| const void *termp, const void *winp) { |
| ENSURE_MSAN_INITED(); |
| InterceptorScope interceptor_scope; |
| int res = REAL(openpty)(amaster, aslave, name, termp, winp); |
| if (!res) { |
| __msan_unpoison(amaster, sizeof(*amaster)); |
| __msan_unpoison(aslave, sizeof(*aslave)); |
| } |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_OPENPTY INTERCEPT_FUNCTION(openpty) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_OPENPTY |
| #endif |
| |
| // NetBSD ships with forkpty(3) in -lutil, that needs to be prebuilt explicitly |
| // with MSan. |
| #if SANITIZER_LINUX |
| INTERCEPTOR(int, forkpty, int *amaster, char *name, const void *termp, |
| const void *winp) { |
| ENSURE_MSAN_INITED(); |
| InterceptorScope interceptor_scope; |
| int res = REAL(forkpty)(amaster, name, termp, winp); |
| if (res != -1) |
| __msan_unpoison(amaster, sizeof(*amaster)); |
| return res; |
| } |
| #define MSAN_MAYBE_INTERCEPT_FORKPTY INTERCEPT_FUNCTION(forkpty) |
| #else |
| #define MSAN_MAYBE_INTERCEPT_FORKPTY |
| #endif |
| |
| struct MSanInterceptorContext { |
| bool in_interceptor_scope; |
| }; |
| |
| namespace __msan { |
| |
| int OnExit() { |
| // FIXME: ask frontend whether we need to return failure. |
| return 0; |
| } |
| |
| } // namespace __msan |
| |
| // A version of CHECK_UNPOISONED using a saved scope value. Used in common |
| // interceptors. |
| #define CHECK_UNPOISONED_CTX(ctx, x, n) \ |
| do { \ |
| if (!((MSanInterceptorContext *)ctx)->in_interceptor_scope) \ |
| CHECK_UNPOISONED_0(x, n); \ |
| } while (0) |
| |
| #define MSAN_INTERCEPT_FUNC(name) \ |
| do { \ |
| if ((!INTERCEPT_FUNCTION(name) || !REAL(name))) \ |
| VReport(1, "MemorySanitizer: failed to intercept '" #name "'\n"); \ |
| } while (0) |
| |
| #define MSAN_INTERCEPT_FUNC_VER(name, ver) \ |
| do { \ |
| if ((!INTERCEPT_FUNCTION_VER(name, ver) || !REAL(name))) \ |
| VReport( \ |
| 1, "MemorySanitizer: failed to intercept '" #name "@@" #ver "'\n"); \ |
| } while (0) |
| |
| #define COMMON_INTERCEPT_FUNCTION(name) MSAN_INTERCEPT_FUNC(name) |
| #define COMMON_INTERCEPT_FUNCTION_VER(name, ver) \ |
| MSAN_INTERCEPT_FUNC_VER(name, ver) |
| #define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) \ |
| UnpoisonParam(count) |
| #define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, size) \ |
| __msan_unpoison(ptr, size) |
| #define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, size) \ |
| CHECK_UNPOISONED_CTX(ctx, ptr, size) |
| #define COMMON_INTERCEPTOR_INITIALIZE_RANGE(ptr, size) \ |
| __msan_unpoison(ptr, size) |
| #define COMMON_INTERCEPTOR_ENTER(ctx, func, ...) \ |
| if (msan_init_is_running) return REAL(func)(__VA_ARGS__); \ |
| ENSURE_MSAN_INITED(); \ |
| MSanInterceptorContext msan_ctx = {IsInInterceptorScope()}; \ |
| ctx = (void *)&msan_ctx; \ |
| (void)ctx; \ |
| InterceptorScope interceptor_scope; \ |
| __msan_unpoison(__errno_location(), sizeof(int)); /* NOLINT */ |
| #define COMMON_INTERCEPTOR_DIR_ACQUIRE(ctx, path) \ |
| do { \ |
| } while (false) |
| #define COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd) \ |
| do { \ |
| } while (false) |
| #define COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd) \ |
| do { \ |
| } while (false) |
| #define COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, newfd) \ |
| do { \ |
| } while (false) |
| #define COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, name) \ |
| do { \ |
| } while (false) // FIXME |
| #define COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name) \ |
| do { \ |
| } while (false) // FIXME |
| #define COMMON_INTERCEPTOR_BLOCK_REAL(name) REAL(name) |
| #define COMMON_INTERCEPTOR_ON_EXIT(ctx) OnExit() |
| #define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle) \ |
| do { \ |
| link_map *map = GET_LINK_MAP_BY_DLOPEN_HANDLE((handle)); \ |
| if (filename && map) \ |
| ForEachMappedRegion(map, __msan_unpoison); \ |
| } while (false) |
| |
| #define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end) \ |
| if (MsanThread *t = GetCurrentThread()) { \ |
| *begin = t->tls_begin(); \ |
| *end = t->tls_end(); \ |
| } else { \ |
| *begin = *end = 0; \ |
| } |
| |
| #define COMMON_INTERCEPTOR_MEMSET_IMPL(ctx, block, c, size) \ |
| { \ |
| (void)ctx; \ |
| return __msan_memset(block, c, size); \ |
| } |
| #define COMMON_INTERCEPTOR_MEMMOVE_IMPL(ctx, to, from, size) \ |
| { \ |
| (void)ctx; \ |
| return __msan_memmove(to, from, size); \ |
| } |
| #define COMMON_INTERCEPTOR_MEMCPY_IMPL(ctx, to, from, size) \ |
| { \ |
| (void)ctx; \ |
| return __msan_memcpy(to, from, size); \ |
| } |
| |
| #define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) \ |
| do { \ |
| GET_STORE_STACK_TRACE; \ |
| CopyShadowAndOrigin(to, from, size, &stack); \ |
| __msan_unpoison(to + size, 1); \ |
| } while (false) |
| |
| #define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, length, prot, flags, fd, \ |
| offset) \ |
| do { \ |
| return mmap_interceptor(REAL(mmap), addr, sz, prot, flags, fd, off); \ |
| } while (false) |
| |
| #include "sanitizer_common/sanitizer_platform_interceptors.h" |
| #include "sanitizer_common/sanitizer_common_interceptors.inc" |
| |
| static uptr signal_impl(int signo, uptr cb); |
| static int sigaction_impl(int signo, const __sanitizer_sigaction *act, |
| __sanitizer_sigaction *oldact); |
| |
| #define SIGNAL_INTERCEPTOR_SIGACTION_IMPL(signo, act, oldact) \ |
| { return sigaction_impl(signo, act, oldact); } |
| |
| #define SIGNAL_INTERCEPTOR_SIGNAL_IMPL(func, signo, handler) \ |
| { \ |
| handler = signal_impl(signo, handler); \ |
| InterceptorScope interceptor_scope; \ |
| return REAL(func)(signo, handler); \ |
| } |
| |
| #include "sanitizer_common/sanitizer_signal_interceptors.inc" |
| |
| static int sigaction_impl(int signo, const __sanitizer_sigaction *act, |
| __sanitizer_sigaction *oldact) { |
| ENSURE_MSAN_INITED(); |
| if (act) read_sigaction(act); |
| int res; |
| if (flags()->wrap_signals) { |
| SpinMutexLock lock(&sigactions_mu); |
| CHECK_LT(signo, kMaxSignals); |
| uptr old_cb = atomic_load(&sigactions[signo], memory_order_relaxed); |
| __sanitizer_sigaction new_act; |
| __sanitizer_sigaction *pnew_act = act ? &new_act : nullptr; |
| if (act) { |
| REAL(memcpy)(pnew_act, act, sizeof(__sanitizer_sigaction)); |
| uptr cb = (uptr)pnew_act->sigaction; |
| uptr new_cb = (pnew_act->sa_flags & __sanitizer::sa_siginfo) |
| ? (uptr)SignalAction |
| : (uptr)SignalHandler; |
| if (cb != __sanitizer::sig_ign && cb != __sanitizer::sig_dfl) { |
| atomic_store(&sigactions[signo], cb, memory_order_relaxed); |
| pnew_act->sigaction = (decltype(pnew_act->sigaction))new_cb; |
| } |
| } |
| res = REAL(SIGACTION_SYMNAME)(signo, pnew_act, oldact); |
| if (res == 0 && oldact) { |
| uptr cb = (uptr)oldact->sigaction; |
| if (cb == (uptr)SignalAction || cb == (uptr)SignalHandler) { |
| oldact->sigaction = (decltype(oldact->sigaction))old_cb; |
| } |
| } |
| } else { |
| res = REAL(SIGACTION_SYMNAME)(signo, act, oldact); |
| } |
| |
| if (res == 0 && oldact) { |
| __msan_unpoison(oldact, sizeof(__sanitizer_sigaction)); |
| } |
| return res; |
| } |
| |
| static uptr signal_impl(int signo, uptr cb) { |
| ENSURE_MSAN_INITED(); |
| if (flags()->wrap_signals) { |
| CHECK_LT(signo, kMaxSignals); |
| SpinMutexLock lock(&sigactions_mu); |
| if (cb != __sanitizer::sig_ign && cb != __sanitizer::sig_dfl) { |
| atomic_store(&sigactions[signo], cb, memory_order_relaxed); |
| cb = (uptr)&SignalHandler; |
| } |
| } |
| return cb; |
| } |
| |
| #define COMMON_SYSCALL_PRE_READ_RANGE(p, s) CHECK_UNPOISONED(p, s) |
| #define COMMON_SYSCALL_PRE_WRITE_RANGE(p, s) \ |
| do { \ |
| } while (false) |
| #define COMMON_SYSCALL_POST_READ_RANGE(p, s) \ |
| do { \ |
| } while (false) |
| #define COMMON_SYSCALL_POST_WRITE_RANGE(p, s) __msan_unpoison(p, s) |
| #include "sanitizer_common/sanitizer_common_syscalls.inc" |
| #include "sanitizer_common/sanitizer_syscalls_netbsd.inc" |
| |
| struct dlinfo { |
| char *dli_fname; |
| void *dli_fbase; |
| char *dli_sname; |
| void *dli_saddr; |
| }; |
| |
| INTERCEPTOR(int, dladdr, void *addr, dlinfo *info) { |
| void *ctx; |
| COMMON_INTERCEPTOR_ENTER(ctx, dladdr, addr, info); |
| int res = REAL(dladdr)(addr, info); |
| if (res != 0) { |
| __msan_unpoison(info, sizeof(*info)); |
| if (info->dli_fname) |
| __msan_unpoison(info->dli_fname, REAL(strlen)(info->dli_fname) + 1); |
| if (info->dli_sname) |
| __msan_unpoison(info->dli_sname, REAL(strlen)(info->dli_sname) + 1); |
| } |
| return res; |
| } |
| |
| INTERCEPTOR(char *, dlerror, int fake) { |
| void *ctx; |
| COMMON_INTERCEPTOR_ENTER(ctx, dlerror, fake); |
| char *res = REAL(dlerror)(fake); |
| if (res) __msan_unpoison(res, REAL(strlen)(res) + 1); |
| return res; |
| } |
| |
| typedef int (*dl_iterate_phdr_cb)(__sanitizer_dl_phdr_info *info, SIZE_T size, |
| void *data); |
| struct dl_iterate_phdr_data { |
| dl_iterate_phdr_cb callback; |
| void *data; |
| }; |
| |
| static int msan_dl_iterate_phdr_cb(__sanitizer_dl_phdr_info *info, SIZE_T size, |
| void *data) { |
| if (info) { |
| __msan_unpoison(info, size); |
| if (info->dlpi_phdr && info->dlpi_phnum) |
| __msan_unpoison(info->dlpi_phdr, struct_ElfW_Phdr_sz * info->dlpi_phnum); |
| if (info->dlpi_name) |
| __msan_unpoison(info->dlpi_name, REAL(strlen)(info->dlpi_name) + 1); |
| } |
| dl_iterate_phdr_data *cbdata = (dl_iterate_phdr_data *)data; |
| UnpoisonParam(3); |
| return cbdata->callback(info, size, cbdata->data); |
| } |
| |
| INTERCEPTOR(void *, shmat, int shmid, const void *shmaddr, int shmflg) { |
| ENSURE_MSAN_INITED(); |
| void *p = REAL(shmat)(shmid, shmaddr, shmflg); |
| if (p != (void *)-1) { |
| __sanitizer_shmid_ds ds; |
| int res = REAL(shmctl)(shmid, shmctl_ipc_stat, &ds); |
| if (!res) { |
| __msan_unpoison(p, ds.shm_segsz); |
| } |
| } |
| return p; |
| } |
| |
| INTERCEPTOR(int, dl_iterate_phdr, dl_iterate_phdr_cb callback, void *data) { |
| void *ctx; |
| COMMON_INTERCEPTOR_ENTER(ctx, dl_iterate_phdr, callback, data); |
| dl_iterate_phdr_data cbdata; |
| cbdata.callback = callback; |
| cbdata.data = data; |
| int res = REAL(dl_iterate_phdr)(msan_dl_iterate_phdr_cb, (void *)&cbdata); |
| return res; |
| } |
| |
| // wchar_t *wcschr(const wchar_t *wcs, wchar_t wc); |
| INTERCEPTOR(wchar_t *, wcschr, void *s, wchar_t wc, void *ps) { |
| ENSURE_MSAN_INITED(); |
| wchar_t *res = REAL(wcschr)(s, wc, ps); |
| return res; |
| } |
| |
| // wchar_t *wcscpy(wchar_t *dest, const wchar_t *src); |
| INTERCEPTOR(wchar_t *, wcscpy, wchar_t *dest, const wchar_t *src) { |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| wchar_t *res = REAL(wcscpy)(dest, src); |
| CopyShadowAndOrigin(dest, src, sizeof(wchar_t) * (REAL(wcslen)(src) + 1), |
| &stack); |
| return res; |
| } |
| |
| INTERCEPTOR(wchar_t *, wcsncpy, wchar_t *dest, const wchar_t *src, |
| SIZE_T n) { // NOLINT |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| SIZE_T copy_size = REAL(wcsnlen)(src, n); |
| if (copy_size < n) copy_size++; // trailing \0 |
| wchar_t *res = REAL(wcsncpy)(dest, src, n); // NOLINT |
| CopyShadowAndOrigin(dest, src, copy_size * sizeof(wchar_t), &stack); |
| __msan_unpoison(dest + copy_size, (n - copy_size) * sizeof(wchar_t)); |
| return res; |
| } |
| |
| // These interface functions reside here so that they can use |
| // REAL(memset), etc. |
| void __msan_unpoison(const void *a, uptr size) { |
| if (!MEM_IS_APP(a)) return; |
| SetShadow(a, size, 0); |
| } |
| |
| void __msan_poison(const void *a, uptr size) { |
| if (!MEM_IS_APP(a)) return; |
| SetShadow(a, size, __msan::flags()->poison_heap_with_zeroes ? 0 : -1); |
| } |
| |
| void __msan_poison_stack(void *a, uptr size) { |
| if (!MEM_IS_APP(a)) return; |
| SetShadow(a, size, __msan::flags()->poison_stack_with_zeroes ? 0 : -1); |
| } |
| |
| void __msan_clear_and_unpoison(void *a, uptr size) { |
| REAL(memset)(a, 0, size); |
| SetShadow(a, size, 0); |
| } |
| |
| void *__msan_memcpy(void *dest, const void *src, SIZE_T n) { |
| if (!msan_inited) return internal_memcpy(dest, src, n); |
| if (msan_init_is_running || __msan::IsInSymbolizer()) |
| return REAL(memcpy)(dest, src, n); |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| void *res = REAL(memcpy)(dest, src, n); |
| CopyShadowAndOrigin(dest, src, n, &stack); |
| return res; |
| } |
| |
| void *__msan_memset(void *s, int c, SIZE_T n) { |
| if (!msan_inited) return internal_memset(s, c, n); |
| if (msan_init_is_running) return REAL(memset)(s, c, n); |
| ENSURE_MSAN_INITED(); |
| void *res = REAL(memset)(s, c, n); |
| __msan_unpoison(s, n); |
| return res; |
| } |
| |
| void *__msan_memmove(void *dest, const void *src, SIZE_T n) { |
| if (!msan_inited) return internal_memmove(dest, src, n); |
| if (msan_init_is_running) return REAL(memmove)(dest, src, n); |
| ENSURE_MSAN_INITED(); |
| GET_STORE_STACK_TRACE; |
| void *res = REAL(memmove)(dest, src, n); |
| MoveShadowAndOrigin(dest, src, n, &stack); |
| return res; |
| } |
| |
| void __msan_unpoison_string(const char* s) { |
| if (!MEM_IS_APP(s)) return; |
| __msan_unpoison(s, REAL(strlen)(s) + 1); |
| } |
| |
| namespace __msan { |
| |
| void InitializeInterceptors() { |
| static int inited = 0; |
| CHECK_EQ(inited, 0); |
| InitializeCommonInterceptors(); |
| InitializeSignalInterceptors(); |
| |
| INTERCEPT_FUNCTION(posix_memalign); |
| MSAN_MAYBE_INTERCEPT_MEMALIGN; |
| MSAN_MAYBE_INTERCEPT___LIBC_MEMALIGN; |
| INTERCEPT_FUNCTION(valloc); |
| MSAN_MAYBE_INTERCEPT_PVALLOC; |
| INTERCEPT_FUNCTION(malloc); |
| INTERCEPT_FUNCTION(calloc); |
| INTERCEPT_FUNCTION(realloc); |
| INTERCEPT_FUNCTION(free); |
| MSAN_MAYBE_INTERCEPT_CFREE; |
| MSAN_MAYBE_INTERCEPT_MALLOC_USABLE_SIZE; |
| MSAN_MAYBE_INTERCEPT_MALLINFO; |
| MSAN_MAYBE_INTERCEPT_MALLOPT; |
| MSAN_MAYBE_INTERCEPT_MALLOC_STATS; |
| INTERCEPT_FUNCTION(fread); |
| MSAN_MAYBE_INTERCEPT_FREAD_UNLOCKED; |
| INTERCEPT_FUNCTION(memccpy); |
| MSAN_MAYBE_INTERCEPT_MEMPCPY; |
| INTERCEPT_FUNCTION(bcopy); |
| INTERCEPT_FUNCTION(wmemset); |
| INTERCEPT_FUNCTION(wmemcpy); |
| MSAN_MAYBE_INTERCEPT_WMEMPCPY; |
| INTERCEPT_FUNCTION(wmemmove); |
| INTERCEPT_FUNCTION(strcpy); // NOLINT |
| MSAN_MAYBE_INTERCEPT_STPCPY; // NOLINT |
| INTERCEPT_FUNCTION(strdup); |
| MSAN_MAYBE_INTERCEPT___STRDUP; |
| INTERCEPT_FUNCTION(strncpy); // NOLINT |
| MSAN_MAYBE_INTERCEPT_GCVT; |
| INTERCEPT_FUNCTION(strcat); // NOLINT |
| INTERCEPT_FUNCTION(strncat); // NOLINT |
| INTERCEPT_STRTO(strtod); |
| INTERCEPT_STRTO(strtof); |
| INTERCEPT_STRTO(strtold); |
| INTERCEPT_STRTO(strtol); |
| INTERCEPT_STRTO(strtoul); |
| INTERCEPT_STRTO(strtoll); |
| INTERCEPT_STRTO(strtoull); |
| INTERCEPT_STRTO(strtouq); |
| INTERCEPT_STRTO(wcstod); |
| INTERCEPT_STRTO(wcstof); |
| INTERCEPT_STRTO(wcstold); |
| INTERCEPT_STRTO(wcstol); |
| INTERCEPT_STRTO(wcstoul); |
| INTERCEPT_STRTO(wcstoll); |
| INTERCEPT_STRTO(wcstoull); |
| #ifdef SANITIZER_NLDBL_VERSION |
| INTERCEPT_FUNCTION_VER(vswprintf, SANITIZER_NLDBL_VERSION); |
| INTERCEPT_FUNCTION_VER(swprintf, SANITIZER_NLDBL_VERSION); |
| #else |
| INTERCEPT_FUNCTION(vswprintf); |
| INTERCEPT_FUNCTION(swprintf); |
| #endif |
| INTERCEPT_FUNCTION(strftime); |
| INTERCEPT_FUNCTION(strftime_l); |
| MSAN_MAYBE_INTERCEPT___STRFTIME_L; |
| INTERCEPT_FUNCTION(wcsftime); |
| INTERCEPT_FUNCTION(wcsftime_l); |
| MSAN_MAYBE_INTERCEPT___WCSFTIME_L; |
| INTERCEPT_FUNCTION(mbtowc); |
| INTERCEPT_FUNCTION(mbrtowc); |
| INTERCEPT_FUNCTION(wcslen); |
| INTERCEPT_FUNCTION(wcsnlen); |
| INTERCEPT_FUNCTION(wcschr); |
| INTERCEPT_FUNCTION(wcscpy); |
| INTERCEPT_FUNCTION(wcsncpy); |
| INTERCEPT_FUNCTION(wcscmp); |
| INTERCEPT_FUNCTION(getenv); |
| INTERCEPT_FUNCTION(setenv); |
| INTERCEPT_FUNCTION(putenv); |
| INTERCEPT_FUNCTION(gettimeofday); |
| MSAN_MAYBE_INTERCEPT_FCVT; |
| MSAN_MAYBE_INTERCEPT_FSTAT; |
| MSAN_MAYBE_INTERCEPT___FXSTAT; |
| MSAN_INTERCEPT_FSTATAT; |
| MSAN_MAYBE_INTERCEPT___FXSTAT64; |
| MSAN_MAYBE_INTERCEPT___FXSTATAT64; |
| INTERCEPT_FUNCTION(pipe); |
| INTERCEPT_FUNCTION(pipe2); |
| INTERCEPT_FUNCTION(socketpair); |
| MSAN_MAYBE_INTERCEPT_FGETS_UNLOCKED; |
| INTERCEPT_FUNCTION(getrlimit); |
| MSAN_MAYBE_INTERCEPT_GETRLIMIT64; |
| MSAN_MAYBE_INTERCEPT_PRLIMIT; |
| MSAN_MAYBE_INTERCEPT_PRLIMIT64; |
| MSAN_INTERCEPT_UNAME; |
| INTERCEPT_FUNCTION(gethostname); |
| MSAN_MAYBE_INTERCEPT_EPOLL_WAIT; |
| MSAN_MAYBE_INTERCEPT_EPOLL_PWAIT; |
| INTERCEPT_FUNCTION(dladdr); |
| INTERCEPT_FUNCTION(dlerror); |
| INTERCEPT_FUNCTION(dl_iterate_phdr); |
| INTERCEPT_FUNCTION(getrusage); |
| #if defined(__mips__) |
| INTERCEPT_FUNCTION_VER(pthread_create, "GLIBC_2.2"); |
| #else |
| INTERCEPT_FUNCTION(pthread_create); |
| #endif |
| INTERCEPT_FUNCTION(pthread_key_create); |
| |
| #if SANITIZER_NETBSD |
| INTERCEPT_FUNCTION(__libc_thr_keycreate); |
| #endif |
| |
| INTERCEPT_FUNCTION(pthread_join); |
| INTERCEPT_FUNCTION(tzset); |
| INTERCEPT_FUNCTION(__cxa_atexit); |
| INTERCEPT_FUNCTION(shmat); |
| INTERCEPT_FUNCTION(fork); |
| MSAN_MAYBE_INTERCEPT_OPENPTY; |
| MSAN_MAYBE_INTERCEPT_FORKPTY; |
| |
| inited = 1; |
| } |
| } // namespace __msan |