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[Sanitizer] Intercepts flopen/flopenat on FreeBSD. 

Reviewers: vitalybuka

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D106218
This commit is contained in:
David Carlier 2021-07-19 19:46:35 +01:00
parent 9333d34b8a
commit 2d56e1394b
2 changed files with 36 additions and 0 deletions
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35
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
View File

@ -6104,6 +6104,40 @@ INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode,
#define INIT_FOPEN
#endif
#if SANITIZER_INTERCEPT_FLOPEN
INTERCEPTOR(int, flopen, const char *path, int flags, ...) {
void *ctx;
va_list ap;
va_start(ap, flags);
u16 mode = static_cast<u16>(va_arg(ap, u32));
va_end(ap);
COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode);
if (path) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
}
return REAL(flopen)(path, flags, mode);
}
INTERCEPTOR(int, flopenat, int dirfd, const char *path, int flags, ...) {
void *ctx;
va_list ap;
va_start(ap, flags);
u16 mode = static_cast<u16>(va_arg(ap, u32));
va_end(ap);
COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode);
if (path) {
COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
}
return REAL(flopenat)(dirfd, path, flags, mode);
}
#define INIT_FLOPEN \
COMMON_INTERCEPT_FUNCTION(flopen); \
COMMON_INTERCEPT_FUNCTION(flopenat);
#else
#define INIT_FLOPEN
#endif
#if SANITIZER_INTERCEPT_FOPEN64
INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) {
void *ctx;
@ -10269,6 +10303,7 @@ static void InitializeCommonInterceptors() {
INIT_LIBIO_INTERNALS;
INIT_FOPEN;
INIT_FOPEN64;
INIT_FLOPEN;
INIT_OPEN_MEMSTREAM;
INIT_OBSTACK;
INIT_FFLUSH;

1
compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
View File

@ -577,6 +577,7 @@
(SI_POSIX && !(SANITIZER_MAC && SANITIZER_I386))
#define SANITIZER_INTERCEPT_UNAME (SI_POSIX && !SI_FREEBSD)
#define SANITIZER_INTERCEPT___XUNAME SI_FREEBSD
#define SANITIZER_INTERCEPT_FLOPEN SI_FREEBSD
// This macro gives a way for downstream users to override the above
// interceptor macros irrespective of the platform they are on. They have