[Ocfs2-devel] [PATCH] ocfs2-tools: add error message to mount.ocfs2 when mount point is invalid.

[Coly Li <coyli@suse.de>]

Adds error messages to mount.ocfs2 when mount point is invalid in three conditions:
1) mount point does not exist.
2) mount point is a symbolic link.
3) mount point is not a directory.
Adding these error messages can help ocfs2console provides more helpful feedback information to end 
use. Similar information can be found when mounting ext[234] file systems.

Patch is generated against upstream ocfs2-tools.

Signed-off-by: Coly Li <coyli@suse.de>
Cc: Joel Becker <Joel.Becker@oracle.com>
Cc: Tao Ma <tao.ma@oracle.com>
Cc: Tiger Yang <tiger.yang@oracle.com>
---
diff --git a/mount.ocfs2/mount.ocfs2.c b/mount.ocfs2/mount.ocfs2.c
index a97b4cb..eb8e336 100644
--- a/mount.ocfs2/mount.ocfs2.c
+++ b/mount.ocfs2/mount.ocfs2.c
@@ -382,9 +382,21 @@ int main(int argc, char **argv)
  			o2cb_complete_group_join(&cluster, &desc, errno);
  		}
  		block_signals (SIG_UNBLOCK);
-		com_err(progname, ret, "while mounting %s on %s. "
-			"Check 'dmesg' for more information on this error.",
-			mo.dev, mo.dir);
+
+		/* complain mount failure */
+		if (lstat(mo.dir, &statbuf))
+			com_err(progname, 0, "mount point %s does not "
+				"exist", mo.dir);
+		else if (stat(mo.dir, &statbuf))
+			com_err(progname, 0, "mount point %s is a "
+				"symbolic link to nowhere", mo.dir);
+		else if (stat(mo.dir, &statbuf) || !S_ISDIR(statbuf.st_mode))
+			com_err(progname, 0, "mount point %s is not "
+				"a directory", mo.dir);
+		else
+			com_err(progname, ret, "while mounting %s on %s. "
+				"Check 'dmesg' for more information on this "
+				"error.", mo.dev, mo.dir);
  		goto bail;
  	}
  	if (hb_started) {

-- 
Coly Li
SuSE PRC Labs