linux-kernel - [PATCH] ROMFS: romfs_iget() - unsigned ino >= 0 is always true

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Message-ID: <49316D15.4070703@gmail.com>
Date:	Sat, 29 Nov 2008 11:25:57 -0500
From:	roel kluin <roel.kluin@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] ROMFS: romfs_iget() - unsigned ino >= 0 is always true

romfs_strnlen() returns int
unsigned X >= 0 is always true

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
for romfs_strnlen(), see
vi fs/romfs/inode.c +200

diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index 60d2f82..28b180b 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -490,7 +490,7 @@ static mode_t romfs_modemap[] =
 static struct inode *
 romfs_iget(struct super_block *sb, unsigned long ino)
 {
-	int nextfh;
+	int nextfh, ret;
 	struct romfs_inode ri;
 	struct inode *i;
 
@@ -527,9 +527,9 @@ romfs_iget(struct super_block *sb, unsigned long ino)
 	i->i_uid = i->i_gid = 0;
 
         /* Precalculate the data offset */
-        ino = romfs_strnlen(i, ino+ROMFH_SIZE, ROMFS_MAXFN);
-        if (ino >= 0)
-                ino = ((ROMFH_SIZE+ino+1+ROMFH_PAD)&ROMFH_MASK);
+        ret = romfs_strnlen(i, ino+ROMFH_SIZE, ROMFS_MAXFN);
+        if (ret >= 0)
+                ino = ((ROMFH_SIZE+ret+1+ROMFH_PAD)&ROMFH_MASK);
         else
                 ino = 0;
 

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