linux-kernel - [PATCH v1 08/10] ipmi_si: Use strstrip() to remove surrounding spaces

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

Date:   Tue, 30 Mar 2021 21:16:47 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Corey Minyard <cminyard@...sta.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        openipmi-developer@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org
Cc:     Corey Minyard <minyard@....org>
Subject: [PATCH v1 08/10] ipmi_si: Use strstrip() to remove surrounding spaces

Instead of home grown analogue, use strstrip() from the kernel library.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/char/ipmi/ipmi_si_hotmod.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/char/ipmi/ipmi_si_hotmod.c b/drivers/char/ipmi/ipmi_si_hotmod.c
index 4fbb4e18bae2..087f5eb1ebc0 100644
--- a/drivers/char/ipmi/ipmi_si_hotmod.c
+++ b/drivers/char/ipmi/ipmi_si_hotmod.c
@@ -185,24 +185,16 @@ static atomic_t hotmod_nr;
 
 static int hotmod_handler(const char *val, const struct kernel_param *kp)
 {
-	char *str = kstrdup(val, GFP_KERNEL), *curr, *next;
 	int  rv;
 	struct ipmi_plat_data h;
-	unsigned int len;
-	int ival;
+	char *str, *curr, *next;
 
+	str = kstrdup(val, GFP_KERNEL);
 	if (!str)
 		return -ENOMEM;
 
 	/* Kill any trailing spaces, as we can get a "\n" from echo. */
-	len = strlen(str);
-	ival = len - 1;
-	while ((ival >= 0) && isspace(str[ival])) {
-		str[ival] = '\0';
-		ival--;
-	}
-
-	for (curr = str; curr; curr = next) {
+	for (curr = strstrip(str); curr; curr = next) {
 		enum hotmod_op op;
 
 		next = strchr(curr, ':');
@@ -235,7 +227,7 @@ static int hotmod_handler(const char *val, const struct kernel_param *kp)
 				put_device(dev);
 		}
 	}
-	rv = len;
+	rv = strlen(val);
 out:
 	kfree(str);
 	return rv;
-- 
2.30.2