[7/8] Btrfs-progs: add method to filter snapshots by parent uuid

Commit Message

Anand Jain Dec. 28, 2012, 3:13 a.m. UTC

From: Anand Jain <[e-mail]>

Signed-off-by: Anand Jain <[e-mail]>
---
 btrfs-list.c |    6 ++++++
 btrfs-list.h |    1 +
 2 files changed, 7 insertions(+), 0 deletions(-)

Patch

diff --git a/btrfs-list.c b/btrfs-list.c
index 308b54c..efce966 100644
--- a/btrfs-list.c
+++ b/btrfs-list.c
@@ -1144,6 +1144,11 @@  static int filter_topid_equal(struct root_info *ri, u64 data)
 	return ri->top_id == data;
 }
 
+static int filter_by_parent(struct root_info *ri, u64 data)
+{
+	return !uuid_compare(ri->puuid, (u8 *)data);
+}
+
 static btrfs_list_filter_func all_filter_funcs[] = {
 	[BTRFS_LIST_FILTER_ROOTID]		= filter_by_rootid,
 	[BTRFS_LIST_FILTER_SNAPSHOT_ONLY]	= filter_snapshot,
@@ -1155,6 +1160,7 @@  static btrfs_list_filter_func all_filter_funcs[] = {
 	[BTRFS_LIST_FILTER_CGEN_LESS]		= filter_cgen_less,
 	[BTRFS_LIST_FILTER_CGEN_EQUAL]          = filter_cgen_equal,
 	[BTRFS_LIST_FILTER_TOPID_EQUAL]		= filter_topid_equal,
+	[BTRFS_LIST_FILTER_BY_PARENT]		= filter_by_parent,
 };
 
 struct btrfs_list_filter_set *btrfs_list_alloc_filter_set(void)
diff --git a/btrfs-list.h b/btrfs-list.h
index f5dbd47..d71d2b0 100644
--- a/btrfs-list.h
+++ b/btrfs-list.h
@@ -117,6 +117,7 @@  enum btrfs_list_filter_enum {
 	BTRFS_LIST_FILTER_CGEN_LESS,
 	BTRFS_LIST_FILTER_CGEN_MORE,
 	BTRFS_LIST_FILTER_TOPID_EQUAL,
+	BTRFS_LIST_FILTER_BY_PARENT,
 	BTRFS_LIST_FILTER_MAX,
 };