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[msan][tsan] Refine __fxstat{,at}{,64} condition

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In glibc before 2.33, include/sys/stat.h defines fstat/fstat64 to
`__fxstat/__fxstat64` and provides `__fxstat/__fxstat64` in libc_nonshared.a.
The symbols are glibc specific and not needed on other systems.

Reviewed By: vitalybuka, #sanitizers

Differential Revision: https://reviews.llvm.org/D118423
This commit is contained in:
Fangrui Song 2022-01-28 09:15:39 -08:00
parent 5d089d9a83
commit c80d349859
2 changed files with 7 additions and 7 deletions
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8
compiler-rt/lib/msan/msan_interceptors.cpp
View File

@ -666,7 +666,7 @@ INTERCEPTOR(int, fstat, int fd, void *buf) {
#define MSAN_MAYBE_INTERCEPT_FSTAT
#endif
#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD
#if SANITIZER_GLIBC
INTERCEPTOR(int, __fxstat, int magic, int fd, void *buf) {
ENSURE_MSAN_INITED();
int res = REAL(__fxstat)(magic, fd, buf);
@ -679,7 +679,7 @@ INTERCEPTOR(int, __fxstat, int magic, int fd, void *buf) {
#define MSAN_MAYBE_INTERCEPT___FXSTAT
#endif
#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD
#if SANITIZER_GLIBC
INTERCEPTOR(int, __fxstat64, int magic, int fd, void *buf) {
ENSURE_MSAN_INITED();
int res = REAL(__fxstat64)(magic, fd, buf);
@ -704,7 +704,7 @@ INTERCEPTOR(int, fstatat, int fd, char *pathname, void *buf, int flags) {
# define MSAN_MAYBE_INTERCEPT_FSTATAT
#endif
#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD
#if SANITIZER_GLIBC
INTERCEPTOR(int, __fxstatat, int magic, int fd, char *pathname, void *buf,
int flags) {
ENSURE_MSAN_INITED();
@ -717,7 +717,7 @@ INTERCEPTOR(int, __fxstatat, int magic, int fd, char *pathname, void *buf,
# define MSAN_MAYBE_INTERCEPT___FXSTATAT
#endif
#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD
#if SANITIZER_GLIBC
INTERCEPTOR(int, __fxstatat64, int magic, int fd, char *pathname, void *buf,
int flags) {
ENSURE_MSAN_INITED();

6
compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp
View File

@ -1536,7 +1536,7 @@ TSAN_INTERCEPTOR(int, pthread_once, void *o, void (*f)()) {
return 0;
}
#if SANITIZER_LINUX && !SANITIZER_ANDROID
#if SANITIZER_GLIBC
TSAN_INTERCEPTOR(int, __fxstat, int version, int fd, void *buf) {
SCOPED_TSAN_INTERCEPTOR(__fxstat, version, fd, buf);
if (fd > 0)
@ -1562,7 +1562,7 @@ TSAN_INTERCEPTOR(int, fstat, int fd, void *buf) {
#endif
}
#if SANITIZER_LINUX && !SANITIZER_ANDROID
#if SANITIZER_GLIBC
TSAN_INTERCEPTOR(int, __fxstat64, int version, int fd, void *buf) {
SCOPED_TSAN_INTERCEPTOR(__fxstat64, version, fd, buf);
if (fd > 0)
@ -1574,7 +1574,7 @@ TSAN_INTERCEPTOR(int, __fxstat64, int version, int fd, void *buf) {
#define TSAN_MAYBE_INTERCEPT___FXSTAT64
#endif
#if SANITIZER_LINUX && !SANITIZER_ANDROID
#if SANITIZER_GLIBC
TSAN_INTERCEPTOR(int, fstat64, int fd, void *buf) {
SCOPED_TSAN_INTERCEPTOR(__fxstat64, 0, fd, buf);
if (fd > 0)