int rpl_fstat (int fd, struct stat *buf) { #if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY /* Handle the case when rpl_open() used a dummy file descriptor to work around an open() that can't normally visit directories. */ const char *name = _gl_directory_name (fd); if (name != NULL) return stat (name, buf); #endif #ifdef WINDOWS_NATIVE /* Fill the fields ourselves, because the original fstat function returns values for st_atime, st_mtime, st_ctime that depend on the current time zone. See <https://lists.gnu.org/r/bug-gnulib/2017-04/msg00134.html> */ HANDLE h = (HANDLE) _get_osfhandle (fd); if (h == INVALID_HANDLE_VALUE) { errno = EBADF; return -1; } return _gl_fstat_by_handle (h, NULL, buf); #else return stat_time_normalize (orig_fstat (fd, buf), buf); #endif }
int rpl_fstat (int fd, struct stat *buf) { #if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY /* Handle the case when rpl_open() used a dummy file descriptor to work around an open() that can't normally visit directories. */ const char *name = _gl_directory_name (fd); if (name != NULL) return stat (name, buf); #endif return fstat_nothrow (fd, buf); }
/* Like fdopendir, except the result controls a clone of FD. It is the caller's responsibility both to close FD and (if the result is not null) to closedir the result. */ static DIR * fd_clone_opendir (int fd, struct saved_cwd const *cwd) { if (REPLACE_FCHDIR || ! cwd) { DIR *dir = NULL; int saved_errno = EOPNOTSUPP; char buf[OPENAT_BUFFER_SIZE]; char *proc_file = openat_proc_name (buf, fd, "."); if (proc_file) { dir = opendir (proc_file); saved_errno = errno; if (proc_file != buf) free (proc_file); } # if REPLACE_FCHDIR if (! dir && EXPECTED_ERRNO (saved_errno)) { char const *name = _gl_directory_name (fd); return (name ? opendir (name) : NULL); } # endif errno = saved_errno; return dir; } else { if (fchdir (fd) != 0) return NULL; else { DIR *dir = opendir ("."); int saved_errno = errno; if (restore_cwd (cwd) != 0) openat_restore_fail (errno); errno = saved_errno; return dir; } } }
int fchdir (int fd) { const char *name = _gl_directory_name (fd); return name ? chdir (name) : -1; }