From: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Date: Fri, 24 Jun 2016 08:24:47 +0000 (+0900)
Subject: btrfs-progs: fi show: print error message if no valid Btrfs is specified
X-Git-Tag: upstream/4.16.1~1481
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=034643237a9260f12e532bf0459f66234e1f8408;p=platform%2Fupstream%2Fbtrfs-progs.git

btrfs-progs: fi show: print error message if no valid Btrfs is specified

* Before this patch

 ===============================
 # ./btrfs fi show foo      # "foo" doesn't mean any valid Btrfs
 #                          # no error message
 # echo $?
 1
 ===============================

* After this patch

 ===============================
 # ./btrfs fi show foo
 ERROR: foo is not a valid Btrfs
 #
 # echo $?
 1
 ===============================

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 88867a3d..9392a30b 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -898,9 +898,10 @@ devs_only:
 	list_for_each_entry(fs_devices, &all_uuids, list)
 		print_one_uuid(fs_devices, unit_mode);
 
-	if (search && !found)
+	if (search && !found) {
+		error("not a valid btrfs filesystem: %s", search);
 		ret = 1;
-
+	}
 	while (!list_empty(&all_uuids)) {
 		fs_devices = list_entry(all_uuids.next,
 					struct btrfs_fs_devices, list);