diff options
Diffstat (limited to 'mount/lomount.c')
| -rw-r--r-- | mount/lomount.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/mount/lomount.c b/mount/lomount.c index c3ac68a70..793705249 100644 --- a/mount/lomount.c +++ b/mount/lomount.c @@ -102,6 +102,29 @@ is_loop_used(int fd) return ioctl (fd, LOOP_GET_STATUS, &li) == 0; } +int +is_loop_autoclear(const char *device) +{ + struct loop_info lo; + struct loop_info64 lo64; + int fd, rc = 0; + + if ((fd = open(device, O_RDONLY)) < 0) + return 0; + + if (ioctl(fd, LOOP_GET_STATUS64, &lo64) == 0) { + if (lo64.lo_flags & LO_FLAGS_AUTOCLEAR) + rc = 1; + + } else if (ioctl(fd, LOOP_GET_STATUS, &lo) == 0) { + if (lo.lo_flags & LO_FLAGS_AUTOCLEAR) + rc = 1; + } + + close(fd); + return rc; +} + static char * looplist_mk_devname(struct looplist *ll, int num) { |