linux-ext4 - [PATCH 09/15] mke2fs: check return value of e2p

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Date:	Mon, 29 Nov 2010 17:55:11 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Theodore Tso <tytso@....edu>
Cc:	linux-ext4@...r.kernel.org
Subject: [PATCH 09/15] mke2fs: check return value of e2p_os2string()

e2p_os2string() calls malloc() so that it can return NULL.
Check it.

Signed-off-by: Namhyung Kim <namhyung@...il.com>
---
 misc/mke2fs.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 9fb5d5f..90cc206 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -554,6 +554,10 @@ static void show_stats(ext2_filsys fs)
 	printf(_("Filesystem label=%s\n"), buf);
 	fputs(_("OS type: "), stdout);
         os = e2p_os2string(fs->super->s_creator_os);
+	if (!os) {
+		fprintf(stderr, _("Couldn't allocate memory to show OS name!\n"));
+		exit(1);
+	}
 	fputs(os, stdout);
 	free(os);
 	printf("\n");
-- 
1.7.0.4

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