diff options
author | David Sterba <dsterba@suse.com> | 2016-12-12 17:45:25 +0100 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2016-12-14 15:06:36 +0100 |
commit | 87e4233ef0abc1527a2d425bcb5131b7b5f6d295 (patch) | |
tree | 77094bda93b9883cf752c893f144086b6407dd81 /send-utils.h | |
parent | ee518036d2cdf58d562b9448e3c062d5653c0d34 (diff) |
btrfs-progs: fixup API after change in subvol_uuid_search
The return value fix to subvol_uuid_search changes the API semantics, we
must keep it compatible, so we introduce a v2 interface that returns the
negative error value in case of error. Library version bump will follow.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'send-utils.h')
-rw-r--r-- | send-utils.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/send-utils.h b/send-utils.h index 677a1db2..e8f86912 100644 --- a/send-utils.h +++ b/send-utils.h @@ -80,10 +80,25 @@ struct subvol_uuid_search { int subvol_uuid_search_init(int mnt_fd, struct subvol_uuid_search *s); void subvol_uuid_search_finit(struct subvol_uuid_search *s); +/* + * Search for a subvolume by given type (received uuid, root id, path), returns + * pointer to newly allocated struct subvol_info or NULL in case it's not found + * or there was another error. This ambiguity of error value is fixed by + * subvol_uuid_search2 that returns a negative errno in case of an error, of a + * valid pointer otherwise. + * + * This function will be deprecated in the future, please consider using v2 in + * new code unless you need to keep backward compatibility with older + * btrfs-progs. + */ struct subvol_info *subvol_uuid_search(struct subvol_uuid_search *s, u64 root_id, const u8 *uuid, u64 transid, const char *path, enum subvol_search_type type); +struct subvol_info *subvol_uuid_search2(struct subvol_uuid_search *s, + u64 root_id, const u8 *uuid, u64 transid, + const char *path, + enum subvol_search_type type); void subvol_uuid_search_add(struct subvol_uuid_search *s, struct subvol_info *si); |