File 0171-btrfs-progs-qgroup-show-refine-error-messages.patch of Package btrfsprogs.11414

From: David Sterba <dsterba@suse.com>
Date: Fri, 20 Jan 2017 17:52:12 +0100
Subject: btrfs-progs: qgroup show: refine error messages
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
Git-commit: 7610cbf729003952f76fddf67439fc0499139ff6
Patch-mainline: v4.9.1
References: bsc#1045577

When qgroup show is called on a filesystem that does not have quotas
enabled, the error message is very unclear:

  ERROR: can't perform the search - No such file or directory
  ERROR: can't list qgroups: No such file or director

Remove the error from low level helper and let the command handler
decide what to print.

Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>
---
 cmds-qgroup.c |    8 ++++++--
 qgroup.c      |    7 ++-----
 2 files changed, 8 insertions(+), 7 deletions(-)

--- a/cmds-qgroup.c
+++ b/cmds-qgroup.c
@@ -379,9 +379,13 @@ static int cmd_qgroup_show(int argc, cha
 	}
 	ret = btrfs_show_qgroups(fd, filter_set, comparer_set);
 	e = errno;
+	if (ret < 0) {
+		if (e == ENOENT)
+			error("can't list qgroups: quotas not enabled");
+		else
+			error("can't list qgroups: %s", strerror(e));
+	}
 	close_file_or_dir(fd, dirstream);
-	if (ret < 0)
-		error("can't list qgroups: %s", strerror(e));
 
 	return !!ret;
 }
--- a/qgroup.c
+++ b/qgroup.c
@@ -1074,12 +1074,9 @@ static int __qgroups_search(int fd, stru
 
 	while (1) {
 		ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
-		if (ret < 0) {
-			fprintf(stderr,
-				"ERROR: can't perform the search - %s\n",
-				strerror(errno));
+		if (ret < 0)
 			return ret;
-		}
+
 		/* the ioctl returns the number of item it found in nr_items */
 		if (sk->nr_items == 0)
 			break;