- if ( (opt & OPT_x && stat(arg, &st) == 0) || (lstat(arg, &st) == 0) ) {
- if (opt & OPT_x) {
- if (S_ISBLK(st.st_mode))
- {
- bb_printf("%u:%u\n", major(st.st_rdev),
- minor(st.st_rdev));
- return EXIT_SUCCESS;
- } else {
- if (opt & OPT_q)
- putchar('\n');
- else
- bb_error_msg("%s: not a block device", arg);
- }
- return EXIT_FAILURE;
- } else
- if (S_ISDIR(st.st_mode)) {
- dev_t st_dev = st.st_dev;
- ino_t st_ino = st.st_ino;
- char *p;
- bb_xasprintf(&p, "%s/..", arg);
- if (stat(p, &st) == 0) {
- short ret = (st_dev != st.st_dev) ||
- (st_dev == st.st_dev && st_ino == st.st_ino);
- if (opt & OPT_d)
- bb_printf("%u:%u\n", major(st_dev), minor(st_dev));
- else if (!(opt & OPT_q))
- bb_printf("%s is %sa mountpoint\n", arg, ret?"":"not ");
- return !ret;
+ if (opt & OPT_x) {
+ if (S_ISBLK(st.st_mode)) {
+ printf("%u:%u\n", major(st.st_rdev),
+ minor(st.st_rdev));
+ return EXIT_SUCCESS;
+ }
+ errno = 0; /* make perror_msg work as error_msg */
+ msg = "%s: not a block device";
+ goto err;
+ }
+
+ errno = ENOTDIR;
+ if (S_ISDIR(st.st_mode)) {
+ dev_t st_dev = st.st_dev;
+ ino_t st_ino = st.st_ino;
+ char *p = xasprintf("%s/..", arg);
+
+ if (stat(p, &st) == 0) {
+ //int is_mnt = (st_dev != st.st_dev) || (st_dev == st.st_dev && st_ino == st.st_ino);
+ int is_not_mnt = (st_dev == st.st_dev) && (st_ino != st.st_ino);
+
+ if (opt & OPT_d)
+ printf("%u:%u\n", major(st_dev), minor(st_dev));
+ if (opt & OPT_n) {
+ const char *d = find_block_device(arg);
+ /* name is undefined, but device is mounted -> anonymous superblock! */
+ /* happens with btrfs */
+ if (!d) {
+ d = "UNKNOWN";
+ /* TODO: iterate /proc/mounts, or /proc/self/mountinfo
+ * to find out the device name */