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btrfs-progs: corrupt-block: Factor out key parsing function

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Currently passing a key with -K handling is open coded. I intend on
changing the interface a bit to make the program more usable. To aid
in this factor out common code which parses a triplet of the
"u64,u8,u64" format, corresponding to a btrfs key. No functional
changes.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
[ print optarg too ]
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2018-05-14 14:13:28 +03:00 committed by David Sterba
parent 04be0e4b19
commit 572637b6f9
1 changed files with 10 additions and 0 deletions
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10
btrfs-corrupt-block.c
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@ -1081,6 +1081,16 @@ out:
}
static void parse_key(u64 *objectid, u8 *type, u64 *offset)
{
int ret = sscanf(optarg, "%llu,%hhu,%llu", objectid, type, offset);
if (ret != 3) {
fprintf(stderr, "error parsing key '%s': %d\n", optarg, errno);
print_usage(1);
}
}
static struct btrfs_root *open_root(struct btrfs_fs_info *fs_info,
u64 root_objectid)
{