[compiler-rt] 2d56e13 - [Sanitizer] Intercepts flopen/flopenat on FreeBSD.
David Carlier via llvm-commits
llvm-commits at lists.llvm.org
Mon Jul 19 11:48:18 PDT 2021
Author: David Carlier
Date: 2021-07-19T19:46:35+01:00
New Revision: 2d56e1394b8fa5419b22ab4716dfbc76475f9e0f
URL: https://github.com/llvm/llvm-project/commit/2d56e1394b8fa5419b22ab4716dfbc76475f9e0f
DIFF: https://github.com/llvm/llvm-project/commit/2d56e1394b8fa5419b22ab4716dfbc76475f9e0f.diff
LOG: [Sanitizer] Intercepts flopen/flopenat on FreeBSD.
Reviewers: vitalybuka
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D106218
Added:
Modified:
compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
Removed:
################################################################################
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
index d099978e2117..6205d853a4c9 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -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;
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
index 067b60847372..5b710c23fd00 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -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
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