netdev - [PATCH] isdn/hysdn: Convert to kstrtoul_from

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]

Message-Id: <1334446979-1177-1-git-send-email-peterhuewe@gmx.de>
Date:	Sun, 15 Apr 2012 01:42:59 +0200
From:	Peter Huewe <peterhuewe@....de>
To:	Karsten Keil <isdn@...ux-pingi.de>
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org, Peter Huewe <peterhuewe@....de>
Subject: [PATCH] isdn/hysdn:  Convert to kstrtoul_from_user

This patch replaces the code for getting an number from a
userspace buffer by a simple call to kstroul_from_user.
This makes it easier to read and less error prone.

Signed-off-by: Peter Huewe <peterhuewe@....de>
---
 drivers/isdn/hysdn/hysdn_proclog.c |   10 +---------
 1 files changed, 1 insertions(+), 9 deletions(-)

diff --git a/drivers/isdn/hysdn/hysdn_proclog.c b/drivers/isdn/hysdn/hysdn_proclog.c
index ba91333..88e4f0e 100644
--- a/drivers/isdn/hysdn/hysdn_proclog.c
+++ b/drivers/isdn/hysdn/hysdn_proclog.c
@@ -156,17 +156,9 @@ static ssize_t
 hysdn_log_write(struct file *file, const char __user *buf, size_t count, loff_t *off)
 {
 	int rc;
-	unsigned char valbuf[128];
 	hysdn_card *card = file->private_data;
 
-	if (count > (sizeof(valbuf) - 1))
-		count = sizeof(valbuf) - 1;	/* limit length */
-	if (copy_from_user(valbuf, buf, count))
-		return (-EFAULT);	/* copy failed */
-
-	valbuf[count] = 0;	/* terminating 0 */
-
-	rc = kstrtoul(valbuf, 0, &card->debug_flags);
+	rc = kstrtoul_from_user(buf, count, 0, &card->debug_flags);
 	if (rc < 0)
 		return rc;
 	hysdn_addlog(card, "debug set to 0x%lx", card->debug_flags);
-- 
1.7.3.4

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