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btrfs-progs: replace blkid_probe_get_wholedisk_devno

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blkid_probe_get_wholedisk_devno() isn't available in some older
versions of libblkid.  It was used to work around an old
bug in blkid_devno_to_wholedisk(), but that has been fixed since
5cd0823 libblkid: fix blkid_devno_to_wholedisk(), present in
util-linux 2.17 and beyond.

If we happen to be missing that fix, the worst that happens is
that we'd fail to detect that a device is an ssd; the upside is
that this code compiles on older systems.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
This commit is contained in:
Eric Sandeen 2013-04-11 10:39:30 -05:00 committed by David Sterba
parent 6712828275
commit c9ef717ba3
1 changed files with 5 additions and 14 deletions
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19
mkfs.c
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@ -1215,9 +1215,8 @@ static int check_leaf_or_node_size(u32 size, u32 sectorsize)
static int is_ssd(const char *file)
{
char *devname;
blkid_probe probe;
char *dev;
char dev[32];
char path[PATH_MAX];
dev_t disk;
int fd;
@ -1227,24 +1226,16 @@ static int is_ssd(const char *file)
if (!probe)
return 0;
/*
* We want to use blkid_devno_to_wholedisk() but it's broken for some
* reason on F17 at least so we'll do this trickery
*/
disk = blkid_probe_get_wholedisk_devno(probe);
/* Device number of this disk (possibly a partition) */
disk = blkid_probe_get_devno(probe);
if (!disk)
return 0;
devname = blkid_devno_to_devname(disk);
if (!devname)
return 0;
dev = strrchr(devname, '/');
dev++;
/* Get whole disk name (not full path) for this devno */
blkid_devno_to_wholedisk(disk, dev, sizeof(dev), NULL);
snprintf(path, PATH_MAX, "/sys/block/%s/queue/rotational", dev);
free(devname);
blkid_free_probe(probe);
fd = open(path, O_RDONLY);