[compiler-rt][rtsan] chroot interception.

[devnexen]

No description provided.

[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: David CARLIER (devnexen)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/125932.diff

2 Files Affected:

• (modified) compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp (+6)
• (modified) compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp (+6)

diff --git a/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp b/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp index 83e6cdd4a00941..6d961d0d84e645 100644 --- a/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp +++ b/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp @@ -254,6 +254,11 @@ INTERCEPTOR(int, fchdir, int fd) { return REAL(fchdir)(fd); } +INTERCEPTOR(int, chroot, const char *path) { + __rtsan_notify_intercepted_call("chroot"); + return REAL(chroot)(path); +} + // Streams INTERCEPTOR(FILE *, fopen, const char *path, const char *mode) { @@ -1402,6 +1407,7 @@ void __rtsan::InitializeInterceptors() { INTERCEPT_FUNCTION(close); INTERCEPT_FUNCTION(chdir); INTERCEPT_FUNCTION(fchdir); + INTERCEPT_FUNCTION(chroot); INTERCEPT_FUNCTION(fopen); RTSAN_MAYBE_INTERCEPT_FOPEN64; RTSAN_MAYBE_INTERCEPT_FREOPEN64; diff --git a/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp b/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp index 075f5974b7562a..dba5e18e436a41 100644 --- a/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp +++ b/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp @@ -457,6 +457,12 @@ TEST(TestRtsanInterceptors, FchdirDiesWhenRealtime) { ExpectNonRealtimeSurvival(Func); } +TEST(TestRtsanInterceptors, ChrootDiesWhenRealtime) { + auto Func = []() { chroot("."); }; + ExpectRealtimeDeath(Func, "chroot"); + ExpectNonRealtimeSurvival(Func); +} + TEST_F(RtsanFileTest, FopenDiesWhenRealtime) { auto Func = [this]() { FILE *f = fopen(GetTemporaryFilePath(), "w");