diff options
| author | Kamil Rytarowski <n54@gmx.com> | 2018-01-03 22:28:39 +0000 |
|---|---|---|
| committer | Kamil Rytarowski <n54@gmx.com> | 2018-01-03 22:28:39 +0000 |
| commit | 127df3a5936479c254feb916ed97980c0a4f8931 (patch) | |
| tree | a9ac463654912319db48c15361e0447d65ed37fb /lib/msan | |
| parent | 3e3b3f00625ddb8dd56f1ee362855574071e9258 (diff) | |
Add MSan interceptor for fstat(2)
Summary:
Add new MSan interceptor that corrects NetBSD's
specific handling of fstat(2).
NetBSD renames the call to __fstat50.
Add new test: test/msan/fstat.cc
Sponsored by <The NetBSD Foundation>
Reviewers: joerg, eugenis, vitalybuka
Reviewed By: vitalybuka
Subscribers: llvm-commits, #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D41637
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@321765 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/msan')
| -rw-r--r-- | lib/msan/msan_interceptors.cc | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/msan/msan_interceptors.cc b/lib/msan/msan_interceptors.cc index a7fe09b25..02b41efda 100644 --- a/lib/msan/msan_interceptors.cc +++ b/lib/msan/msan_interceptors.cc @@ -35,6 +35,7 @@ #include "sanitizer_common/sanitizer_tls_get_addr.h" #if SANITIZER_NETBSD +#define fstat __fstat50 #define gettimeofday __gettimeofday50 #define getrusage __getrusage50 #endif @@ -688,6 +689,19 @@ INTERCEPTOR(int, putenv, char *string) { return res; } +#if 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(); @@ -1633,6 +1647,7 @@ void InitializeInterceptors() { 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; |