linux-ext4 - [PATCH] ext4: Use kstrtoul() instead of parse

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Tue,  9 Apr 2013 15:12:28 +0200
From:	Lukas Czerner <lczerner@...hat.com>
To:	linux-ext4@...r.kernel.org
Cc:	Lukas Czerner <lczerner@...hat.com>
Subject: [PATCH] ext4: Use kstrtoul() instead of parse_strtoul()

In parse_strtoul() we're still using deprecated simple_strtoul(). Remove
parse_strtoul() altogether and replace it with kstrtoul()

Signed-off-by: Lukas Czerner <lczerner@...hat.com>
---
 fs/ext4/super.c |   27 +++++++++------------------
 1 files changed, 9 insertions(+), 18 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 525beb6..af76375 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2382,19 +2382,6 @@ struct ext4_attr {
 	int offset;
 };
 
-static int parse_strtoul(const char *buf,
-		unsigned long max, unsigned long *value)
-{
-	char *endp;
-
-	*value = simple_strtoul(skip_spaces(buf), &endp, 0);
-	endp = skip_spaces(endp);
-	if (*endp || *value > max)
-		return -EINVAL;
-
-	return 0;
-}
-
 static ssize_t delayed_allocation_blocks_show(struct ext4_attr *a,
 					      struct ext4_sb_info *sbi,
 					      char *buf)
@@ -2434,11 +2421,13 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
 					  const char *buf, size_t count)
 {
 	unsigned long t;
+	int ret;
 
-	if (parse_strtoul(buf, 0x40000000, &t))
-		return -EINVAL;
+	ret = kstrtoul(skip_spaces(buf), 0, &t);
+	if (ret)
+		return ret;
 
-	if (t && !is_power_of_2(t))
+	if (t && (!is_power_of_2(t) || t > 0x40000000))
 		return -EINVAL;
 
 	sbi->s_inode_readahead_blks = t;
@@ -2459,9 +2448,11 @@ static ssize_t sbi_ui_store(struct ext4_attr *a,
 {
 	unsigned int *ui = (unsigned int *) (((char *) sbi) + a->offset);
 	unsigned long t;
+	int ret;
 
-	if (parse_strtoul(buf, 0xffffffff, &t))
-		return -EINVAL;
+	ret = kstrtoul(skip_spaces(buf), 0, &t);
+	if (ret)
+		return ret;
 	*ui = t;
 	return count;
 }
-- 
1.7.7.6

--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html