linux-ext4 - [PATCH] tune2fs: fall back to old get/set fs label on error

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Date:   Sat, 20 May 2023 20:43:29 +1000
From:   Li Dongyang <dongyangli@....com>
To:     linux-ext4@...r.kernel.org
Cc:     adilger@...ger.ca, lczerner@...hat.com
Subject: [PATCH] tune2fs: fall back to old get/set fs label on error

If we fail to get/open the mount point for get/set
fs label ioctl, just fall back to old method and
silence the error messages.

Fixes: f85b4526f ("tune2fs: implement support for set/get label iocts")
Signed-off-by: Li Dongyang <dongyangli@....com>
---
 misc/tune2fs.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 458f7cf6a..460d81c9e 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -3096,24 +3096,19 @@ static int handle_fslabel(int setlabel)
 
 	ret = ext2fs_check_mount_point(device_name, &mnt_flags,
 					  mntpt, sizeof(mntpt));
-	if (ret) {
-		com_err(device_name, ret, _("while checking mount status"));
-		return 1;
-	}
+	if (ret)
+		return -1;
+
 	if (!(mnt_flags & EXT2_MF_MOUNTED) ||
 	    (setlabel && (mnt_flags & EXT2_MF_READONLY)))
 		return -1;
 
-	if (!mntpt[0]) {
-		fprintf(stderr,_("Unknown mount point for %s\n"), device_name);
-		return 1;
-	}
+	if (!mntpt[0])
+		return -1;
 
 	fd = open(mntpt, O_RDONLY);
-	if (fd < 0) {
-		com_err(mntpt, errno, _("while opening mount point"));
-		return 1;
-	}
+	if (fd < 0)
+		return -1;
 
 	/* Get fs label */
 	if (!setlabel) {
-- 
2.39.2