linux-ext4 - [PATCH 07/10] libext2fs: fix memory leaks on error paths in ext2fs_create_icount

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Date:	Tue,  7 Jan 2014 09:53:11 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Ext4 Developers List <linux-ext4@...r.kernel.org>
Cc:	Theodore Ts'o <tytso@....edu>
Subject: [PATCH 07/10] libext2fs: fix memory leaks on error paths in ext2fs_create_icount_tdb

Addresses-Coverity-Id: #1138575

Signed-off-by: "Theodore Ts'o" <tytso@....edu>
---
 lib/ext2fs/icount.c | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/lib/ext2fs/icount.c b/lib/ext2fs/icount.c
index c5ebf74..80085e1 100644
--- a/lib/ext2fs/icount.c
+++ b/lib/ext2fs/icount.c
@@ -192,10 +192,12 @@ errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
 		goto errout;
 	uuid_unparse(fs->super->s_uuid, uuid);
 	sprintf(fn, "%s/%s-icount-XXXXXX", tdb_dir, uuid);
+	icount->tdb_fn = fn;
 	fd = mkstemp(fn);
-	if (fd < 0)
-		return fd;
-
+	if (fd < 0) {
+		retval = errno;
+		goto errout;
+	}
 	/*
 	 * This is an overestimate of the size that we will need; the
 	 * ideal value is the number of used inodes with a count
@@ -206,18 +208,15 @@ errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
 	 */
 	num_inodes = fs->super->s_inodes_count - fs->super->s_free_inodes_count;
 
-	icount->tdb_fn = fn;
 	icount->tdb = tdb_open(fn, num_inodes, TDB_NOLOCK | TDB_NOSYNC,
 			       O_RDWR | O_CREAT | O_TRUNC, 0600);
-	if (icount->tdb) {
-		close(fd);
-		*ret = icount;
-		return 0;
-	}
-
-	retval = errno;
 	close(fd);
-
+	if (icount->tdb == NULL) {
+		retval = errno;
+		goto errout;
+	}
+	*ret = icount;
+	return 0;
 errout:
 	ext2fs_free_icount(icount);
 	return(retval);
-- 
1.8.5.rc3.362.gdf10213

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