-/**
- * @brief Get the mode bits from the given file descriptor.
- *
- * @param fd
- * The file descriptor (which may reference a directory) whose
- * mode we want.
- *
- * @return A mode_t (st_mode) structure containing the mode bits.
- * See sys/stat.h for details.
- */
-mode_t get_mode(int fd) {
- if (fd <= 0) {
- errno = ENOENT;
- return ACL_ERROR;
- }
-
- struct stat s;
- int result = fstat(fd, &s);
-
- if (result == 0) {
- return s.st_mode;
- }
- else {
- /* errno will be set already by lstat() */
- return result;
- }
-}
-
-
-
-/**
- * @brief Determine if the given file descriptor might refer to an
- * (unsafe) hard link.
- *
- * @param fd
- * The file descriptor whose link count we want to investigate.
- *
- * @return true if we are certain that @c fd does not describe a hard
- * link, and false otherwise. In case of error, false is returned,
- * because we are not sure that @c fd is not a hard link.
- */
-bool is_hardlink_safe(int fd) {
- if (fd <= 0) {
- return false;
- }
- struct stat s;
- if (fstat(fd, &s) == 0) {
- return (s.st_nlink == 1 || S_ISDIR(s.st_mode));
- }
- else {
- return false;
- }
-}
-
-
-/**
- * @brief Determine whether or not the given file descriptor is for
- * a regular file.
- *
- * @param fd
- * The file descriptor to test for regular-fileness.
- *
- * @return true if @c fd describes a regular file, and false otherwise.
- */
-bool is_regular_file(int fd) {
- if (fd <= 0) {
- return false;
- }
-
- struct stat s;
- if (fstat(fd, &s) == 0) {
- return S_ISREG(s.st_mode);
- }
- else {
- return false;
- }
-}
-
-