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[sanitizer] replace size_t with SIZE_T in interceptors (same for ssize_t, off_t and off64_t). This is done to avoid confusion and to make the code work with compilers that define size_t w/o any includes (MSVC) 

llvm-svn: 170103
This commit is contained in:
Kostya Serebryany 2012-12-13 06:31:40 +00:00
parent e36abf6d5d
commit 07bb3925b0
4 changed files with 99 additions and 104 deletions
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21
compiler-rt/lib/asan/asan_intercepted_functions.h
View File

@ -153,23 +153,16 @@ DECLARE_FUNCTION_AND_WRAPPER(long long, atoll, const char *nptr); // NOLINT
DECLARE_FUNCTION_AND_WRAPPER(long long, strtoll, const char *nptr, char **endptr, int base); // NOLINT
# endif
// unistd.h
// FIXME: remove these typedefs once we get rid of mach_override.
typedef uptr size_t;
typedef sptr ssize_t;
typedef u64 off_t;
typedef u64 off64_t;
DECLARE_FUNCTION_AND_WRAPPER(ssize_t, read, int fd, void *buf, size_t count);
DECLARE_FUNCTION_AND_WRAPPER(ssize_t, pread, int fd, void *buf,
size_t count, off_t offset);
DECLARE_FUNCTION_AND_WRAPPER(ssize_t, pread64, int fd, void *buf,
size_t count, off64_t offset);
DECLARE_FUNCTION_AND_WRAPPER(SSIZE_T, read, int fd, void *buf, SIZE_T count);
DECLARE_FUNCTION_AND_WRAPPER(SSIZE_T, pread, int fd, void *buf,
SIZE_T count, OFF_T offset);
DECLARE_FUNCTION_AND_WRAPPER(SSIZE_T, pread64, int fd, void *buf,
SIZE_T count, OFF64_T offset);
# if ASAN_INTERCEPT_MLOCKX
// mlock/munlock
DECLARE_FUNCTION_AND_WRAPPER(int, mlock, const void *addr, size_t len);
DECLARE_FUNCTION_AND_WRAPPER(int, munlock, const void *addr, size_t len);
DECLARE_FUNCTION_AND_WRAPPER(int, mlock, const void *addr, SIZE_T len);
DECLARE_FUNCTION_AND_WRAPPER(int, munlock, const void *addr, SIZE_T len);
DECLARE_FUNCTION_AND_WRAPPER(int, mlockall, int flags);
DECLARE_FUNCTION_AND_WRAPPER(int, munlockall, void);
# endif

9
compiler-rt/lib/interception/interception.h
View File

@ -19,6 +19,15 @@
# error "Interception doesn't work on this operating system."
#endif
#include "sanitizer/common_interface_defs.h"
// These typedefs should be used only in the interceptor definitions to replace
// the standard system types (e.g. SSIZE_T instead of ssize_t)
typedef __sanitizer::uptr SIZE_T;
typedef __sanitizer::sptr SSIZE_T;
typedef __sanitizer::u64 OFF_T;
typedef __sanitizer::u64 OFF64_T;
// How to use this library:
// 1) Include this header to define your own interceptors
// (see details below).

154
compiler-rt/lib/msan/msan_interceptors.cc
View File

@ -25,10 +25,6 @@
// ACHTUNG! No other system header includes in this file.
// Ideally, we should get rid of stdarg.h as well.
typedef uptr size_t;
typedef sptr ssize_t;
typedef u64 off_t;
typedef u64 off64_t;
using namespace __msan;
#define ENSURE_MSAN_INITED() do { \
@ -51,53 +47,53 @@ using namespace __msan;
} \
} while (0)
static void *fast_memset(void *ptr, int c, size_t n);
static void *fast_memcpy(void *dst, const void *src, size_t n);
static void *fast_memset(void *ptr, int c, SIZE_T n);
static void *fast_memcpy(void *dst, const void *src, SIZE_T n);
INTERCEPTOR(size_t, fread, void *ptr, size_t size, size_t nmemb, void *file) {
INTERCEPTOR(SIZE_T, fread, void *ptr, SIZE_T size, SIZE_T nmemb, void *file) {
ENSURE_MSAN_INITED();
size_t res = REAL(fread)(ptr, size, nmemb, file);
SIZE_T res = REAL(fread)(ptr, size, nmemb, file);
if (res > 0)
__msan_unpoison(ptr, res *size);
return res;
}
INTERCEPTOR(size_t, fread_unlocked, void *ptr, size_t size, size_t nmemb,
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);
SIZE_T res = REAL(fread_unlocked)(ptr, size, nmemb, file);
if (res > 0)
__msan_unpoison(ptr, res *size);
return res;
}
INTERCEPTOR(ssize_t, read, int fd, void *ptr, size_t count) {
INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
ENSURE_MSAN_INITED();
ssize_t res = REAL(read)(fd, ptr, count);
SSIZE_T res = REAL(read)(fd, ptr, count);
if (res > 0)
__msan_unpoison(ptr, res);
return res;
}
INTERCEPTOR(ssize_t, pread, int fd, void *ptr, size_t count, off_t offset) {
INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) {
ENSURE_MSAN_INITED();
ssize_t res = REAL(pread)(fd, ptr, count, offset);
SSIZE_T res = REAL(pread)(fd, ptr, count, offset);
if (res > 0)
__msan_unpoison(ptr, res);
return res;
}
INTERCEPTOR(ssize_t, pread64, int fd, void *ptr, size_t count, off64_t offset) {
INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) {
ENSURE_MSAN_INITED();
ssize_t res = REAL(pread64)(fd, ptr, count, offset);
SSIZE_T res = REAL(pread64)(fd, ptr, count, offset);
if (res > 0)
__msan_unpoison(ptr, res);
return res;
}
INTERCEPTOR(ssize_t, readlink, const char *path, char *buf, size_t bufsiz) {
INTERCEPTOR(SSIZE_T, readlink, const char *path, char *buf, SIZE_T bufsiz) {
ENSURE_MSAN_INITED();
ssize_t res = REAL(readlink)(path, buf, bufsiz);
SSIZE_T res = REAL(readlink)(path, buf, bufsiz);
if (res > 0)
__msan_unpoison(buf, res);
return res;
@ -110,19 +106,19 @@ INTERCEPTOR(void *, readdir, void *a) {
return res;
}
INTERCEPTOR(void *, memcpy, void *dest, const void *src, size_t n) {
INTERCEPTOR(void *, memcpy, void *dest, const void *src, SIZE_T n) {
return __msan_memcpy(dest, src, n);
}
INTERCEPTOR(void *, memmove, void *dest, const void *src, size_t n) {
INTERCEPTOR(void *, memmove, void *dest, const void *src, SIZE_T n) {
return __msan_memmove(dest, src, n);
}
INTERCEPTOR(void *, memset, void *s, int c, size_t n) {
INTERCEPTOR(void *, memset, void *s, int c, SIZE_T n) {
return __msan_memset(s, c, n);
}
INTERCEPTOR(int, posix_memalign, void **memptr, size_t alignment, size_t size) {
INTERCEPTOR(int, posix_memalign, void **memptr, SIZE_T alignment, SIZE_T size) {
GET_MALLOC_STACK_TRACE;
CHECK_EQ(alignment & (alignment - 1), 0);
*memptr = MsanReallocate(&stack, 0, size, alignment, false);
@ -136,17 +132,17 @@ INTERCEPTOR(void, free, void *ptr) {
MsanDeallocate(ptr);
}
INTERCEPTOR(size_t, strlen, const char *s) {
INTERCEPTOR(SIZE_T, strlen, const char *s) {
ENSURE_MSAN_INITED();
size_t res = REAL(strlen)(s);
SIZE_T res = REAL(strlen)(s);
CHECK_UNPOISONED(s, res + 1);
return res;
}
INTERCEPTOR(size_t, strnlen, const char *s, size_t n) {
INTERCEPTOR(SIZE_T, strnlen, const char *s, SIZE_T n) {
ENSURE_MSAN_INITED();
size_t res = REAL(strnlen)(s, n);
size_t scan_size = (res == n) ? res : res + 1;
SIZE_T res = REAL(strnlen)(s, n);
SIZE_T scan_size = (res == n) ? res : res + 1;
CHECK_UNPOISONED(s, scan_size);
return res;
}
@ -156,15 +152,15 @@ INTERCEPTOR(size_t, strnlen, const char *s, size_t n) {
INTERCEPTOR(char *, strcpy, char *dest, const char *src) { // NOLINT
ENSURE_MSAN_INITED();
size_t n = REAL(strlen)(src);
SIZE_T n = REAL(strlen)(src);
char *res = REAL(strcpy)(dest, src); // NOLINT
__msan_copy_poison(dest, src, n + 1);
return res;
}
INTERCEPTOR(char *, strncpy, char *dest, const char *src, size_t n) { // NOLINT
INTERCEPTOR(char *, strncpy, char *dest, const char *src, SIZE_T n) { // NOLINT
ENSURE_MSAN_INITED();
size_t copy_size = REAL(strnlen)(src, n);
SIZE_T copy_size = REAL(strnlen)(src, n);
if (copy_size < n)
copy_size++; // trailing \0
char *res = REAL(strncpy)(dest, src, n); // NOLINT
@ -174,18 +170,18 @@ INTERCEPTOR(char *, strncpy, char *dest, const char *src, size_t n) { // NOLINT
INTERCEPTOR(char *, strdup, char *src) {
ENSURE_MSAN_INITED();
size_t n = REAL(strlen)(src);
SIZE_T n = REAL(strlen)(src);
char *res = REAL(strdup)(src);
__msan_copy_poison(res, src, n + 1);
return res;
}
INTERCEPTOR(char *, gcvt, double number, size_t ndigit, char *buf) {
INTERCEPTOR(char *, gcvt, double number, SIZE_T ndigit, char *buf) {
ENSURE_MSAN_INITED();
char *res = REAL(gcvt)(number, ndigit, buf);
// DynamoRio tool will take care of unpoisoning gcvt result for us.
if (!__msan_has_dynamic_component()) {
size_t n = REAL(strlen)(buf);
SIZE_T n = REAL(strlen)(buf);
__msan_unpoison(buf, n + 1);
}
return res;
@ -193,17 +189,17 @@ INTERCEPTOR(char *, gcvt, double number, size_t ndigit, char *buf) {
INTERCEPTOR(char *, strcat, char *dest, const char *src) { // NOLINT
ENSURE_MSAN_INITED();
size_t src_size = REAL(strlen)(src);
size_t dest_size = REAL(strlen)(dest);
SIZE_T src_size = REAL(strlen)(src);
SIZE_T dest_size = REAL(strlen)(dest);
char *res = REAL(strcat)(dest, src); // NOLINT
__msan_copy_poison(dest + dest_size, src, src_size + 1);
return res;
}
INTERCEPTOR(char *, strncat, char *dest, const char *src, size_t n) { // NOLINT
INTERCEPTOR(char *, strncat, char *dest, const char *src, SIZE_T n) { // NOLINT
ENSURE_MSAN_INITED();
size_t dest_size = REAL(strlen)(dest);
size_t copy_size = REAL(strlen)(src);
SIZE_T dest_size = REAL(strlen)(dest);
SIZE_T copy_size = REAL(strlen)(src);
if (copy_size < n)
copy_size++; // trailing \0
char *res = REAL(strncat)(dest, src, n); // NOLINT
@ -306,33 +302,33 @@ INTERCEPTOR(int, swprintf, void *str, uptr size, void *format, ...) {
return res;
}
// size_t strftime(char *s, size_t max, const char *format,const struct tm *tm);
INTERCEPTOR(size_t, strftime, char *s, size_t max, const char *format,
// SIZE_T strftime(char *s, SIZE_T max, const char *format,const struct tm *tm);
INTERCEPTOR(SIZE_T, strftime, char *s, SIZE_T max, const char *format,
void *tm) {
ENSURE_MSAN_INITED();
size_t res = REAL(strftime)(s, max, format, tm);
SIZE_T res = REAL(strftime)(s, max, format, tm);
if (res) __msan_unpoison(s, res + 1);
return res;
}
INTERCEPTOR(size_t, wcstombs, void *dest, void *src, size_t size) {
INTERCEPTOR(SIZE_T, wcstombs, void *dest, void *src, SIZE_T size) {
ENSURE_MSAN_INITED();
size_t res = REAL(wcstombs)(dest, src, size);
if (res != (size_t)-1) __msan_unpoison(dest, res + 1);
SIZE_T res = REAL(wcstombs)(dest, src, size);
if (res != (SIZE_T)-1) __msan_unpoison(dest, res + 1);
return res;
}
// size_t mbstowcs(wchar_t *dest, const char *src, size_t n);
INTERCEPTOR(size_t, mbstowcs, wchar_t *dest, const char *src, size_t n) {
// SIZE_T mbstowcs(wchar_t *dest, const char *src, SIZE_T n);
INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T n) {
ENSURE_MSAN_INITED();
size_t res = REAL(mbstowcs)(dest, src, n);
if (res != (size_t)-1) __msan_unpoison(dest, (res + 1) * sizeof(wchar_t));
SIZE_T res = REAL(mbstowcs)(dest, src, n);
if (res != (SIZE_T)-1) __msan_unpoison(dest, (res + 1) * sizeof(wchar_t));
return res;
}
INTERCEPTOR(size_t, wcslen, const wchar_t *s) {
INTERCEPTOR(SIZE_T, wcslen, const wchar_t *s) {
ENSURE_MSAN_INITED();
size_t res = REAL(wcslen)(s);
SIZE_T res = REAL(wcslen)(s);
CHECK_UNPOISONED(s, sizeof(wchar_t) * (res + 1));
return res;
}
@ -352,15 +348,15 @@ INTERCEPTOR(wchar_t *, wcscpy, wchar_t *dest, const wchar_t *src) {
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) {
// 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();
wchar_t *res = REAL(wmemcpy)(dest, src, n);
__msan_copy_poison(dest, src, n * sizeof(wchar_t));
return res;
}
INTERCEPTOR(wchar_t *, wmemset, wchar_t *s, wchar_t c, size_t n) {
INTERCEPTOR(wchar_t *, wmemset, wchar_t *s, wchar_t c, SIZE_T n) {
CHECK(MEM_IS_APP(s));
ENSURE_MSAN_INITED();
wchar_t *res = (wchar_t *)fast_memset(s, c, n * sizeof(wchar_t));
@ -368,7 +364,7 @@ INTERCEPTOR(wchar_t *, wmemset, wchar_t *s, wchar_t c, size_t n) {
return res;
}
INTERCEPTOR(wchar_t *, wmemmove, wchar_t *dest, const wchar_t *src, size_t n) {
INTERCEPTOR(wchar_t *, wmemmove, wchar_t *dest, const wchar_t *src, SIZE_T n) {
ENSURE_MSAN_INITED();
wchar_t *res = REAL(wmemmove)(dest, src, n);
__msan_move_poison(dest, src, n * sizeof(wchar_t));
@ -530,7 +526,7 @@ INTERCEPTOR(char *, fgets_unlocked, char *s, int size, void *stream) {
return res;
}
INTERCEPTOR(char *, getcwd, char *buf, size_t size) {
INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) {
ENSURE_MSAN_INITED();
char *res = REAL(getcwd)(buf, size);
if (res)
@ -627,42 +623,42 @@ INTERCEPTOR(int, epoll_pwait, int epfd, void *events, int maxevents,
return res;
}
INTERCEPTOR(ssize_t, recv, int fd, void *buf, size_t len, int flags) {
INTERCEPTOR(SSIZE_T, recv, int fd, void *buf, SIZE_T len, int flags) {
ENSURE_MSAN_INITED();
ssize_t res = REAL(recv)(fd, buf, len, flags);
SSIZE_T res = REAL(recv)(fd, buf, len, flags);
if (res > 0)
__msan_unpoison(buf, res);
return res;
}
INTERCEPTOR(ssize_t, recvfrom, int fd, void *buf, size_t len, int flags,
INTERCEPTOR(SSIZE_T, recvfrom, int fd, void *buf, SIZE_T len, int flags,
void *srcaddr, void *addrlen) {
ENSURE_MSAN_INITED();
ssize_t res = REAL(recvfrom)(fd, buf, len, flags, srcaddr, addrlen);
SSIZE_T res = REAL(recvfrom)(fd, buf, len, flags, srcaddr, addrlen);
if (res > 0)
__msan_unpoison(buf, res);
return res;
}
INTERCEPTOR(ssize_t, recvmsg, int fd, struct msghdr *msg, int flags) {
INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct msghdr *msg, int flags) {
ENSURE_MSAN_INITED();
ssize_t res = REAL(recvmsg)(fd, msg, flags);
SSIZE_T res = REAL(recvmsg)(fd, msg, flags);
if (res > 0) {
for (size_t i = 0; i < __msan_get_msghdr_iovlen(msg); ++i)
for (SIZE_T i = 0; i < __msan_get_msghdr_iovlen(msg); ++i)
__msan_unpoison(__msan_get_msghdr_iov_iov_base(msg, i),
__msan_get_msghdr_iov_iov_len(msg, i));
}
return res;
}
INTERCEPTOR(void *, calloc, size_t nmemb, size_t size) {
INTERCEPTOR(void *, calloc, SIZE_T nmemb, SIZE_T size) {
GET_MALLOC_STACK_TRACE;
if (!msan_inited) {
// Hack: dlsym calls calloc before REAL(calloc) is retrieved from dlsym.
const size_t kCallocPoolSize = 1024;
const SIZE_T kCallocPoolSize = 1024;
static uptr calloc_memory_for_dlsym[kCallocPoolSize];
static size_t allocated;
size_t size_in_words = ((nmemb * size) + kWordSize - 1) / kWordSize;
static SIZE_T allocated;
SIZE_T size_in_words = ((nmemb * size) + kWordSize - 1) / kWordSize;
void *mem = (void*)&calloc_memory_for_dlsym[allocated];
allocated += size_in_words;
CHECK(allocated < kCallocPoolSize);
@ -671,18 +667,18 @@ INTERCEPTOR(void *, calloc, size_t nmemb, size_t size) {
return MsanReallocate(&stack, 0, nmemb * size, sizeof(u64), true);
}
INTERCEPTOR(void *, realloc, void *ptr, size_t size) {
INTERCEPTOR(void *, realloc, void *ptr, SIZE_T size) {
GET_MALLOC_STACK_TRACE;
return MsanReallocate(&stack, ptr, size, sizeof(u64), false);
}
INTERCEPTOR(void *, malloc, size_t size) {
INTERCEPTOR(void *, malloc, SIZE_T size) {
GET_MALLOC_STACK_TRACE;
return MsanReallocate(&stack, 0, size, sizeof(u64), false);
}
INTERCEPTOR(void *, mmap, void *addr, size_t length, int prot, int flags,
int fd, off_t offset) {
INTERCEPTOR(void *, mmap, void *addr, SIZE_T length, int prot, int flags,
int fd, OFF_T offset) {
ENSURE_MSAN_INITED();
void *res = REAL(mmap)(addr, length, prot, flags, fd, offset);
if (res != (void*)-1)
@ -690,8 +686,8 @@ INTERCEPTOR(void *, mmap, void *addr, size_t length, int prot, int flags,
return res;
}
INTERCEPTOR(void *, mmap64, void *addr, size_t length, int prot, int flags,
int fd, off64_t offset) {
INTERCEPTOR(void *, mmap64, void *addr, SIZE_T length, int prot, int flags,
int fd, OFF64_T offset) {
ENSURE_MSAN_INITED();
void *res = REAL(mmap64)(addr, length, prot, flags, fd, offset);
if (res != (void*)-1)
@ -700,7 +696,7 @@ INTERCEPTOR(void *, mmap64, void *addr, size_t length, int prot, int flags,
}
// static
void *fast_memset(void *ptr, int c, size_t n) {
void *fast_memset(void *ptr, int c, SIZE_T n) {
// hack until we have a really fast internal_memset
if (sizeof(uptr) == 8 &&
(n % 8) == 0 &&
@ -709,7 +705,7 @@ void *fast_memset(void *ptr, int c, size_t n) {
// Printf("memset %p %zd %x\n", ptr, n, c);
uptr to_store = c ? -1L : 0L;
uptr *p = (uptr*)ptr;
for (size_t i = 0; i < n / 8; i++)
for (SIZE_T i = 0; i < n / 8; i++)
p[i] = to_store;
return ptr;
}
@ -717,7 +713,7 @@ void *fast_memset(void *ptr, int c, size_t n) {
}
// static
void *fast_memcpy(void *dst, const void *src, size_t n) {
void *fast_memcpy(void *dst, const void *src, SIZE_T n) {
// Same hack as in fast_memset above.
if (sizeof(uptr) == 8 &&
(n % 8) == 0 &&
@ -725,7 +721,7 @@ void *fast_memcpy(void *dst, const void *src, size_t n) {
((uptr)src % 8) == 0) {
uptr *d = (uptr*)dst;
uptr *s = (uptr*)src;
for (size_t i = 0; i < n / 8; i++)
for (SIZE_T i = 0; i < n / 8; i++)
d[i] = s[i];
return dst;
}
@ -783,21 +779,21 @@ void __msan_move_poison(void *dst, const void *src, uptr size) {
__msan_copy_origin(dst, src, size);
}
void *__msan_memcpy(void *dest, const void *src, size_t n) {
void *__msan_memcpy(void *dest, const void *src, SIZE_T n) {
ENSURE_MSAN_INITED();
void *res = fast_memcpy(dest, src, n);
__msan_copy_poison(dest, src, n);
return res;
}
void *__msan_memset(void *s, int c, size_t n) {
void *__msan_memset(void *s, int c, SIZE_T n) {
ENSURE_MSAN_INITED();
void *res = fast_memset(s, c, n);
__msan_unpoison(s, n);
return res;
}
void *__msan_memmove(void *dest, const void *src, size_t n) {
void *__msan_memmove(void *dest, const void *src, SIZE_T n) {
ENSURE_MSAN_INITED();
void *res = REAL(memmove)(dest, src, n);
__msan_move_poison(dest, src, n);

19
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.h
View File

@ -20,37 +20,34 @@
#ifndef SANITIZER_COMMON_INTERCEPTORS_H
#define SANITIZER_COMMON_INTERCEPTORS_H
#include "interception/interception.h"
#if defined(__linux__) && !defined(ANDROID)
# define SANITIZER_INTERCEPT_PREAD64 1
#else
# define SANITIZER_INTERCEPT_PREAD64 0
#endif
typedef uptr size_t;
typedef sptr ssize_t;
typedef u64 off_t;
typedef u64 off64_t;
INTERCEPTOR(ssize_t, read, int fd, void *ptr, size_t count) {
INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) {
COMMON_INTERCEPTOR_ENTER(read, fd, ptr, count);
ssize_t res = REAL(read)(fd, ptr, count);
SSIZE_T res = REAL(read)(fd, ptr, count);
if (res > 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ptr, res);
return res;
}
INTERCEPTOR(ssize_t, pread, int fd, void *ptr, size_t count, off_t offset) {
INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) {
COMMON_INTERCEPTOR_ENTER(pread, fd, ptr, count, offset);
ssize_t res = REAL(pread)(fd, ptr, count, offset);
SSIZE_T res = REAL(pread)(fd, ptr, count, offset);
if (res > 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ptr, res);
return res;
}
#if SANITIZER_INTERCEPT_PREAD64
INTERCEPTOR(ssize_t, pread64, int fd, void *ptr, size_t count, off64_t offset) {
INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) {
COMMON_INTERCEPTOR_ENTER(pread64, fd, ptr, count, offset);
ssize_t res = REAL(pread64)(fd, ptr, count, offset);
SSIZE_T res = REAL(pread64)(fd, ptr, count, offset);
if (res > 0)
COMMON_INTERCEPTOR_WRITE_RANGE(ptr, res);
return res;