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- Introduce ualarm() function
- Make rename() report EISEMPTY on Windows
- Always raise EINVAL upon open(O_RDONLY|O_TRUNC)
- Add macro so ./configure will detect SOCK_CLOEXEC
- Fix O_TRUNC without O_CREAT not working on Windows
- Let fcntl(F_SETFL) change O_APPEND status on Windows
- Make sure pwrite() / pread() report ESPIPE on sockets
- Raise ESPIPE on Windows when pwrite() is used on pipe
- Properly compute O_APPEND CreateFile() flags on Windows
- Don't require O_DIRECTORY to open directories on Windows
- Fix more instances of Windows reporting EISDIR and ENOTDIR
- Normalize EFTYPE and EMLINK to ELOOP on NetBSD and FreeBSD
- Make unlink() / rmdir() work on read-only files on Windows
- Validate UTF-8 on Windows paths to fix bug with overlong NUL
- Always print signal name to stderr when crashing due to SIG_DFL
- Fix Windows bug where denormalized paths >260 chars didn't work
- Block signals on BSDs when thread exits before trashing its own stack
This commit is contained in:
Justine Tunney 2023-08-21 02:28:24 -07:00
parent ec957491ea
commit ebf784d4f5
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GPG key ID: BE714B4575D6E328
76 changed files with 1019 additions and 568 deletions
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10
libc/calls/fstatat.c
View file

@ -52,27 +52,31 @@ static inline const char *__strace_fstatat_flags(char buf[12], int flags) {
* file is a relative path, then `path` becomes relative to `dirfd`
* @param st is where the result is stored
* @param flags can have `AT_SYMLINK_NOFOLLOW`
* @param st is where result is stored
* @raise EACCES if denied access to component in path prefix
* @raise EIO if i/o error occurred while reading from filesystem
* @raise ELOOP if a symbolic link loop exists in `path`
* @raise ENAMETOOLONG if a component in `path` exceeds `NAME_MAX`
* @raise ENOENT on empty string or if component in path doesn't exist
* @raise ENOTDIR if a parent component existed that wasn't a directory
* @raise EILSEQ if `path` contains illegal UTF-8 sequences (Windows/MacOS)
* @raise ENOTDIR if `path` is relative and `dirfd` isn't an open directory
* @raise ENOEXEC if `path` is a zip path and this executable isn't a zip file
* @raise EOVERFLOW shouldn't be possible on 64-bit systems
* @raise ELOOP may ahappen if `SYMLOOP_MAX` symlinks were dereferenced
* @raise ENAMETOOLONG may happen if `path` exceeded `PATH_MAX`
* @raise EFAULT if `path` or `st` point to invalid memory
* @raise EINVAL if `flags` has unsupported bits
* @return 0 on success, or -1 w/ errno
* @see S_ISDIR(st.st_mode), S_ISREG()
* @asyncsignalsafe
* @vforksafe
*/
int fstatat(int dirfd, const char *path, struct stat *st, int flags) {
/* execve() depends on this */
// execve() depends on this
int rc;
struct ZiposUri zipname;
if (IsAsan() && !__asan_is_valid(st, sizeof(*st))) {
if (IsAsan() && (!__asan_is_valid_str(path) || //
!__asan_is_valid(st, sizeof(*st)))) {
rc = efault();
} else if (flags & ~AT_SYMLINK_NOFOLLOW) {
return einval();