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From: Len Brown <lenb@kernel.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-acpi@vger.kernel.org, linux-pm@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, Len Brown <len.brown@intel.com>,
	Pavel Vasilyev <pavel@pavlinux.ru>
Subject: [PATCH] ACPI: replace strlen("string") with sizeof("string") -1
Date: Thu, 26 Jul 2012 21:39:38 -0400	[thread overview]
Message-ID: <5011F15A.3060007@kernel.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1206301023540.29029-100000@netrider.rowland.org>

...both give the number of chars in the string
without the '\0', as strncmp() wants,
but sizeof() is compile-time.

Reported-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Pavel Vasilyev <pavel@pavlinux.ru>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/acpi/sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 240a244..7c3f98b 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -173,7 +173,7 @@ static int param_set_trace_state(const char *val,
struct kernel_param *kp)
 {
 	int result = 0;

-	if (!strncmp(val, "enable", strlen("enable"))) {
+	if (!strncmp(val, "enable", sizeof("enable") - 1)) {
 		result = acpi_debug_trace(trace_method_name, trace_debug_level,
 					  trace_debug_layer, 0);
 		if (result)
@@ -181,7 +181,7 @@ static int param_set_trace_state(const char *val,
struct kernel_param *kp)
 		goto exit;
 	}

-	if (!strncmp(val, "disable", strlen("disable"))) {
+	if (!strncmp(val, "disable", sizeof("disable") - 1)) {
 		int name = 0;
 		result = acpi_debug_trace((char *)&name, trace_debug_level,
 					  trace_debug_layer, 0);
-- 
1.7.12.rc0

WARNING: multiple messages have this Message-ID (diff)
From: Len Brown <lenb@kernel.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-acpi@vger.kernel.org, linux-pm@lists.linux-foundation.org,
	Pavel Vasilyev <pavel@pavlinux.ru>,
	linux-kernel@vger.kernel.org, Len Brown <len.brown@intel.com>
Subject: [PATCH] ACPI: replace strlen("string") with sizeof("string") -1
Date: Thu, 26 Jul 2012 21:39:38 -0400	[thread overview]
Message-ID: <5011F15A.3060007@kernel.org> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1206301023540.29029-100000@netrider.rowland.org>

...both give the number of chars in the string
without the '\0', as strncmp() wants,
but sizeof() is compile-time.

Reported-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Pavel Vasilyev <pavel@pavlinux.ru>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/acpi/sysfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 240a244..7c3f98b 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -173,7 +173,7 @@ static int param_set_trace_state(const char *val,
struct kernel_param *kp)
 {
 	int result = 0;

-	if (!strncmp(val, "enable", strlen("enable"))) {
+	if (!strncmp(val, "enable", sizeof("enable") - 1)) {
 		result = acpi_debug_trace(trace_method_name, trace_debug_level,
 					  trace_debug_layer, 0);
 		if (result)
@@ -181,7 +181,7 @@ static int param_set_trace_state(const char *val,
struct kernel_param *kp)
 		goto exit;
 	}

-	if (!strncmp(val, "disable", strlen("disable"))) {
+	if (!strncmp(val, "disable", sizeof("disable") - 1)) {
 		int name = 0;
 		result = acpi_debug_trace((char *)&name, trace_debug_level,
 					  trace_debug_layer, 0);
-- 
1.7.12.rc0


  reply	other threads:[~2012-07-27  1:39 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-30  5:07 ACPI & Power Management Patches for Linux 3.5-rc4 Len Brown
2012-06-30  5:07 ` [PATCH 1/8] ACPI sysfs.c strlen fix Len Brown
2012-06-30  5:07   ` [PATCH 2/8] ACPI, x86: fix Dell M6600 ACPI reboot regression via DMI Len Brown
2012-06-30  5:07     ` Len Brown
2012-07-06 11:09     ` Ingo Molnar
2012-06-30  5:07   ` [PATCH 3/8] ACPI: Make acpi_skip_timer_override cover all source_irq==0 cases Len Brown
2012-06-30  5:07     ` Len Brown
2012-06-30  5:07   ` [PATCH 4/8] ACPI: Remove one board specific WARN when ignoring timer overriding Len Brown
2012-06-30  5:07     ` Len Brown
2012-06-30  5:07   ` [PATCH 5/8] ACPI: Add a quirk for "AMILO PRO V2030" to ignore the " Len Brown
2012-06-30  5:07     ` Len Brown
2012-06-30  5:07   ` [PATCH 6/8] ACPI, APEI, Avoid too much error reporting in runtime Len Brown
2012-06-30  5:07     ` Len Brown
2012-06-30  5:07   ` [PATCH 7/8] ACPI video: Still use ACPI backlight control if _DOS doesn't exist Len Brown
2012-06-30  5:07   ` [PATCH 8/8] acpi_pad: fix power_saving thread deadlock Len Brown
2012-06-30  5:07     ` Len Brown
2012-06-30 14:25   ` [PATCH 1/8] ACPI sysfs.c strlen fix Alan Stern
2012-06-30 14:25     ` [linux-pm] " Alan Stern
2012-07-27  1:39     ` Len Brown [this message]
2012-07-27  1:39       ` [PATCH] ACPI: replace strlen("string") with sizeof("string") -1 Len Brown
2012-07-30 14:26       ` Ian Campbell
2012-07-30 14:41         ` richard -rw- weinberger
2012-08-06 10:21       ` [linux-pm] " Pavel Machek
2012-08-06 14:36         ` Alan Stern
2012-08-06 14:36           ` [linux-pm] " Alan Stern
2012-08-06 16:00           ` Pavel Vasilyev
2012-08-06 16:28             ` Alan Stern
2012-08-06 16:28               ` [linux-pm] " Alan Stern
2012-08-06 18:47               ` Pavel Vasilyev
2012-08-06 19:59                 ` Alan Stern
2012-08-06 19:59                   ` [linux-pm] " Alan Stern
2012-08-06 22:57                   ` Daniel Taylor
2012-08-06 22:57                     ` Daniel Taylor
2012-08-07 13:19                     ` Bernd Petrovitsch
2012-08-07 13:19                       ` [linux-pm] " Bernd Petrovitsch
2012-08-08  0:59                       ` Daniel Taylor
2012-08-08  0:59                         ` Daniel Taylor
2012-08-07  1:07                   ` Pavel Vasilyev
2012-08-07  1:07                     ` Pavel Vasilyev
2012-08-07 17:24                     ` Alan Stern
2012-08-07 17:24                       ` [linux-pm] " Alan Stern
2012-08-07 23:23                       ` Pavel Vasilyev
2012-08-08  1:27                         ` Alan Stern
2012-08-08  1:27                           ` Alan Stern
2012-08-06 10:26       ` Andreas Schwab

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