diff options
Diffstat (limited to 'libblkid/src/probe.c')
| -rw-r--r-- | libblkid/src/probe.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/libblkid/src/probe.c b/libblkid/src/probe.c index 1ace06a68..ae1fc06d6 100644 --- a/libblkid/src/probe.c +++ b/libblkid/src/probe.c @@ -846,10 +846,15 @@ failed: * @off: begin of probing area * @size: size of probing area (zero means whole device/file) * - * Assigns the device to probe control struct, resets internal buffers and - * resets the current probing. + * Assigns the device to probe control struct, resets internal buffers, resets + * the current probing, and close previously associated device (if open by + * libblkid). * - * Returns: -1 in case of failure, or 0 on success. + * If @fd is < 0 than only resets the prober and returns 1. Note that + * blkid_reset_probe() keeps the device associated with the prober, but + * blkid_probe_set_device() does complete reset. + * + * Returns: -1 in case of failure, 0 on success and 1 on reset. */ int blkid_probe_set_device(blkid_probe pr, int fd, blkid_loff_t off, blkid_loff_t size) @@ -864,6 +869,11 @@ int blkid_probe_set_device(blkid_probe pr, int fd, if ((pr->flags & BLKID_FL_PRIVATE_FD) && pr->fd >= 0) close(pr->fd); + if (pr->disk_probe) { + blkid_free_probe(pr->disk_probe); + pr->disk_probe = NULL; + } + pr->flags &= ~BLKID_FL_PRIVATE_FD; pr->flags &= ~BLKID_FL_TINY_DEV; pr->flags &= ~BLKID_FL_CDROM_DEV; @@ -879,6 +889,9 @@ int blkid_probe_set_device(blkid_probe pr, int fd, pr->wipe_size = 0; pr->wipe_chain = NULL; + if (fd < 0) + return 1; + #if defined(POSIX_FADV_RANDOM) && defined(HAVE_POSIX_FADVISE) /* Disable read-ahead */ posix_fadvise(fd, 0, 0, POSIX_FADV_RANDOM); |