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Message-Id: <1449697404-21076-4-git-send-email-keescook@chromium.org>
Date: Wed, 9 Dec 2015 13:43:19 -0800
From: Kees Cook <keescook@...omium.org>
To: linux-kernel@...r.kernel.org
Cc: Kees Cook <keescook@...omium.org>, Ingo Molnar <mingo@...hat.com>,
Andy Lutomirski <luto@...capital.net>,
"H. Peter Anvin" <hpa@...or.com>,
Michael Ellerman <mpe@...erman.id.au>,
Mathias Krause <minipli@...glemail.com>,
Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
Arnd Bergmann <arnd@...db.de>, PaX Team <pageexec@...email.hu>,
Emese Revfy <re.emese@...il.com>, kernel-hardening@...ts.openwall.com,
linux-arch <linux-arch@...r.kernel.org>
Subject: [PATCH v3 3/8] param: convert some "on"/"off" users to strtobool
This changes several users of manual "on"/"off" parsing to use strtobool.
Signed-off-by: Kees Cook <keescook@...omium.org>
---
arch/powerpc/kernel/rtasd.c | 10 +++-------
arch/powerpc/platforms/pseries/hotplug-cpu.c | 11 +++--------
arch/s390/kernel/time.c | 8 ++------
arch/s390/kernel/topology.c | 8 +++-----
arch/x86/kernel/aperture_64.c | 13 +++----------
kernel/time/hrtimer.c | 11 +++--------
kernel/time/tick-sched.c | 11 +++--------
7 files changed, 20 insertions(+), 52 deletions(-)
diff --git a/arch/powerpc/kernel/rtasd.c b/arch/powerpc/kernel/rtasd.c
index 5a2c049c1c61..984e67e91ba3 100644
--- a/arch/powerpc/kernel/rtasd.c
+++ b/arch/powerpc/kernel/rtasd.c
@@ -21,6 +21,7 @@
#include <linux/cpu.h>
#include <linux/workqueue.h>
#include <linux/slab.h>
+#include <linux/string.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -49,7 +50,7 @@ static unsigned int rtas_error_log_buffer_max;
static unsigned int event_scan;
static unsigned int rtas_event_scan_rate;
-static int full_rtas_msgs = 0;
+static bool full_rtas_msgs;
/* Stop logging to nvram after first fatal error */
static int logging_enabled; /* Until we initialize everything,
@@ -592,11 +593,6 @@ __setup("surveillance=", surveillance_setup);
static int __init rtasmsgs_setup(char *str)
{
- if (strcmp(str, "on") == 0)
- full_rtas_msgs = 1;
- else if (strcmp(str, "off") == 0)
- full_rtas_msgs = 0;
-
- return 1;
+ return strtobool(str, &full_rtas_msgs);
}
__setup("rtasmsgs=", rtasmsgs_setup);
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 62475440fd45..ffed89818d39 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -24,6 +24,7 @@
#include <linux/sched.h> /* for idle_task_exit */
#include <linux/cpu.h>
#include <linux/of.h>
+#include <linux/string.h>
#include <asm/prom.h>
#include <asm/rtas.h>
#include <asm/firmware.h>
@@ -43,20 +44,14 @@ static DEFINE_PER_CPU(enum cpu_state_vals, current_state) = CPU_STATE_OFFLINE;
static enum cpu_state_vals default_offline_state = CPU_STATE_OFFLINE;
-static int cede_offline_enabled __read_mostly = 1;
+static bool cede_offline_enabled __read_mostly = true;
/*
* Enable/disable cede_offline when available.
*/
static int __init setup_cede_offline(char *str)
{
- if (!strcmp(str, "off"))
- cede_offline_enabled = 0;
- else if (!strcmp(str, "on"))
- cede_offline_enabled = 1;
- else
- return 0;
- return 1;
+ return strtobool(str, &cede_offline_enabled);
}
__setup("cede_offline=", setup_cede_offline);
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 99f84ac31307..afc7fc9684ba 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -1433,7 +1433,7 @@ device_initcall(etr_init_sysfs);
/*
* Server Time Protocol (STP) code.
*/
-static int stp_online;
+static bool stp_online;
static struct stp_sstpi stp_info;
static void *stp_page;
@@ -1444,11 +1444,7 @@ static struct timer_list stp_timer;
static int __init early_parse_stp(char *p)
{
- if (strncmp(p, "off", 3) == 0)
- stp_online = 0;
- else if (strncmp(p, "on", 2) == 0)
- stp_online = 1;
- return 0;
+ return strtobool(p, &stp_online);
}
early_param("stp", early_parse_stp);
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 40b8102fdadb..10e388216307 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -15,6 +15,7 @@
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/string.h>
#include <linux/cpu.h>
#include <linux/smp.h>
#include <linux/mm.h>
@@ -37,7 +38,7 @@ static void set_topology_timer(void);
static void topology_work_fn(struct work_struct *work);
static struct sysinfo_15_1_x *tl_info;
-static int topology_enabled = 1;
+static bool topology_enabled = true;
static DECLARE_WORK(topology_work, topology_work_fn);
/*
@@ -444,10 +445,7 @@ static const struct cpumask *cpu_book_mask(int cpu)
static int __init early_parse_topology(char *p)
{
- if (strncmp(p, "off", 3))
- return 0;
- topology_enabled = 0;
- return 0;
+ return strtobool(p, &topology_enabled);
}
early_param("topology", early_parse_topology);
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 6e85f713641d..6608b00a516a 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -20,6 +20,7 @@
#include <linux/pci_ids.h>
#include <linux/pci.h>
#include <linux/bitops.h>
+#include <linux/string.h>
#include <linux/suspend.h>
#include <asm/e820.h>
#include <asm/io.h>
@@ -227,19 +228,11 @@ static u32 __init search_agp_bridge(u32 *order, int *valid_agp)
return 0;
}
-static int gart_fix_e820 __initdata = 1;
+static bool gart_fix_e820 __initdata = true;
static int __init parse_gart_mem(char *p)
{
- if (!p)
- return -EINVAL;
-
- if (!strncmp(p, "off", 3))
- gart_fix_e820 = 0;
- else if (!strncmp(p, "on", 2))
- gart_fix_e820 = 1;
-
- return 0;
+ return strtobool(p, &gart_fix_e820);
}
early_param("gart_fix_e820", parse_gart_mem);
diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c
index 435b8850dd80..40d82fe4d2a5 100644
--- a/kernel/time/hrtimer.c
+++ b/kernel/time/hrtimer.c
@@ -39,6 +39,7 @@
#include <linux/syscalls.h>
#include <linux/kallsyms.h>
#include <linux/interrupt.h>
+#include <linux/string.h>
#include <linux/tick.h>
#include <linux/seq_file.h>
#include <linux/err.h>
@@ -515,7 +516,7 @@ static inline ktime_t hrtimer_update_base(struct hrtimer_cpu_base *base)
/*
* High resolution timer enabled ?
*/
-static int hrtimer_hres_enabled __read_mostly = 1;
+static bool hrtimer_hres_enabled __read_mostly = true;
unsigned int hrtimer_resolution __read_mostly = LOW_RES_NSEC;
EXPORT_SYMBOL_GPL(hrtimer_resolution);
@@ -524,13 +525,7 @@ EXPORT_SYMBOL_GPL(hrtimer_resolution);
*/
static int __init setup_hrtimer_hres(char *str)
{
- if (!strcmp(str, "off"))
- hrtimer_hres_enabled = 0;
- else if (!strcmp(str, "on"))
- hrtimer_hres_enabled = 1;
- else
- return 0;
- return 1;
+ return strtobool(str, &hrtimer_hres_enabled);
}
__setup("highres=", setup_hrtimer_hres);
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 7c7ec4515983..dad2b3bec58b 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -19,6 +19,7 @@
#include <linux/percpu.h>
#include <linux/profile.h>
#include <linux/sched.h>
+#include <linux/string.h>
#include <linux/module.h>
#include <linux/irq_work.h>
#include <linux/posix-timers.h>
@@ -387,20 +388,14 @@ void __init tick_nohz_init(void)
/*
* NO HZ enabled ?
*/
-static int tick_nohz_enabled __read_mostly = 1;
+static bool tick_nohz_enabled __read_mostly = true;
unsigned long tick_nohz_active __read_mostly;
/*
* Enable / Disable tickless mode
*/
static int __init setup_tick_nohz(char *str)
{
- if (!strcmp(str, "off"))
- tick_nohz_enabled = 0;
- else if (!strcmp(str, "on"))
- tick_nohz_enabled = 1;
- else
- return 0;
- return 1;
+ return strtobool(str, &tick_nohz_enabled);
}
__setup("nohz=", setup_tick_nohz);
--
1.9.1
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