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[compiler-rt] openat2 syscall interception. (#153846)

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This commit is contained in:
David CARLIER
2025-09-06 02:30:02 +01:00
committed by GitHub
parent c985a1a32c
commit d949ac6796
1 changed files with 18 additions and 0 deletions
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18
compiler-rt/lib/sanitizer_common/sanitizer_common_syscalls.inc
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@@ -143,6 +143,12 @@ struct sanitizer_kernel_sockaddr {
char sa_data[14];
};
struct sanitizer_kernel_open_how {
u64 flags;
u64 mode;
u64 resolve;
};
// Real sigset size is always passed as a syscall argument.
// Declare it "void" to catch sizeof(kernel_sigset_t).
typedef void kernel_sigset_t;
@@ -2843,6 +2849,18 @@ PRE_SYSCALL(openat)(long dfd, const void *filename, long flags, long mode) {
POST_SYSCALL(openat)
(long res, long dfd, const void *filename, long flags, long mode) {}
PRE_SYSCALL(openat2)(long dfd, const void* filename,
const sanitizer_kernel_open_how* how, uptr howlen) {
if (filename)
PRE_READ(filename, __sanitizer::internal_strlen((const char*)filename) + 1);
if (how)
PRE_READ(how, howlen);
}
POST_SYSCALL(openat2)(long res, long dfd, const void* filename,
const sanitizer_kernel_open_how* how, uptr howlen) {}
PRE_SYSCALL(newfstatat)
(long dfd, const void *filename, void *statbuf, long flag) {
if (filename)