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[2/2] Btrfs-progs: output the error reason when qgroup_show fails

Message ID 1361963058-1966-1-git-send-email-wangshilong1991@gmail.com (mailing list archive)
State Under Review, archived
Headers show

Commit Message

Wang Shilong Feb. 27, 2013, 11:04 a.m. UTC 
From: Wang Shilong <wangsl-fnst@cn.fujitsu.com>

The original code forgot to output the reason why the commands failed,
fix it.

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
---
 cmds-qgroup.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
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Patch

diff --git a/cmds-qgroup.c b/cmds-qgroup.c
index 79888c8..275f00f 100644
--- a/cmds-qgroup.c
+++ b/cmds-qgroup.c
@@ -298,6 +298,7 @@  static int cmd_qgroup_show(int argc, char **argv)
 {
 	int ret = 0;
 	int fd;
+	int e;
 	char *path = argv[1];
 
 	if (check_argc_exact(argc, 2))
@@ -310,9 +311,11 @@  static int cmd_qgroup_show(int argc, char **argv)
 	}
 
 	ret = list_qgroups(fd);
+	e = errno;
 	close(fd);
 	if (ret < 0) {
-		fprintf(stderr, "ERROR: can't list qgroups\n");
+		fprintf(stderr, "ERROR: can't list qgroups: %s\n",
+				strerror(e));
 		return 30;
 	}