[PATCH] kernel:audit Fixed some coding style errors and warnings.
From: Ionut Alexa
Date: Tue Aug 12 2014 - 06:57:24 EST
Fixed coding style errors and warning. Changed 'printk_ratelimit' to
pr_<level>_ratelimited. Changed 'simple_strtol' to 'kstrtol'.
Signed-off-by: Ionut Alexa <ionut.m.alexa@xxxxxxxxx>
---
kernel/audit.c | 63 ++++++++++++++++++++++++++++++++++----------------------
1 file changed, 38 insertions(+), 25 deletions(-)
diff --git a/kernel/audit.c b/kernel/audit.c
index ba2ff5a..69ec6bd 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -55,6 +55,7 @@
#include <linux/syscalls.h>
#include <linux/audit.h>
+#include <linux/ratelimit.h>
#include <net/sock.h>
#include <net/netlink.h>
@@ -80,10 +81,10 @@ static int audit_initialized;
#define AUDIT_ON 1
#define AUDIT_LOCKED 2
u32 audit_enabled;
-u32 audit_ever_enabled;
-
EXPORT_SYMBOL_GPL(audit_enabled);
+u32 audit_ever_enabled;
+
/* Default state when kernel boots without any parameters. */
static u32 audit_default;
@@ -108,7 +109,7 @@ static u32 audit_rate_limit;
static u32 audit_backlog_limit = 64;
#define AUDIT_BACKLOG_WAIT_TIME (60 * HZ)
static u32 audit_backlog_wait_time = AUDIT_BACKLOG_WAIT_TIME;
-static u32 audit_backlog_wait_overflow = 0;
+static u32 audit_backlog_wait_overflow;
/* The identity of the user shutting down the audit system. */
kuid_t audit_sig_uid = INVALID_UID;
@@ -190,6 +191,7 @@ static void audit_set_portid(struct audit_buffer *ab, __u32 portid)
{
if (ab) {
struct nlmsghdr *nlh = nlmsg_hdr(ab->skb);
+
nlh->nlmsg_pid = portid;
}
}
@@ -200,8 +202,7 @@ void audit_panic(const char *message)
case AUDIT_FAIL_SILENT:
break;
case AUDIT_FAIL_PRINTK:
- if (printk_ratelimit())
- pr_err("%s\n", message);
+ pr_err_ratelimited("%s\n", message);
break;
case AUDIT_FAIL_PANIC:
/* test audit_pid since printk is always losey, why bother? */
@@ -213,15 +214,16 @@ void audit_panic(const char *message)
static inline int audit_rate_check(void)
{
- static unsigned long last_check = 0;
- static int messages = 0;
+ static unsigned long last_check;
+ static int messages;
static DEFINE_SPINLOCK(lock);
unsigned long flags;
unsigned long now;
unsigned long elapsed;
int retval = 0;
- if (!audit_rate_limit) return 1;
+ if (!audit_rate_limit)
+ return 1;
spin_lock_irqsave(&lock, flags);
if (++messages < audit_rate_limit) {
@@ -250,7 +252,7 @@ static inline int audit_rate_check(void)
*/
void audit_log_lost(const char *message)
{
- static unsigned long last_msg = 0;
+ static unsigned long last_msg;
static DEFINE_SPINLOCK(lock);
unsigned long flags;
unsigned long now;
@@ -271,8 +273,7 @@ void audit_log_lost(const char *message)
}
if (print) {
- if (printk_ratelimit())
- pr_warn("audit_lost=%u audit_rate_limit=%u audit_backlog_limit=%u\n",
+ pr_warn_ratelimited("audit_lost=%u audit_rate_limit=%u audit_backlog_limit=%u\n",
atomic_read(&audit_lost),
audit_rate_limit,
audit_backlog_limit);
@@ -344,6 +345,7 @@ static int audit_set_backlog_wait_time(u32 timeout)
static int audit_set_enabled(u32 state)
{
int rc;
+
if (state < AUDIT_OFF || state > AUDIT_LOCKED)
return -EINVAL;
@@ -393,8 +395,9 @@ static void audit_printk_skb(struct sk_buff *skb)
char *data = nlmsg_data(nlh);
if (nlh->nlmsg_type != AUDIT_EOE) {
- if (printk_ratelimit())
- pr_notice("type=%d %s\n", nlh->nlmsg_type, data);
+ if (__printk_ratelimit(__func__))
+ pr_notice_ratelimited("type=%d %s\n", nlh->nlmsg_type,
+ data);
else
audit_log_lost("printk limit exceeded");
}
@@ -672,7 +675,7 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
case AUDIT_MAKE_EQUIV:
/* Only support auditd and auditctl in initial pid namespace
* for now. */
- if ((task_active_pid_ns(current) != &init_pid_ns))
+ if (task_active_pid_ns(current) != &init_pid_ns)
return -EPERM;
if (!netlink_capable(skb, CAP_AUDIT_CONTROL))
@@ -834,6 +837,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
switch (msg_type) {
case AUDIT_GET: {
struct audit_status s;
+
memset(&s, 0, sizeof(s));
s.enabled = audit_enabled;
s.failure = audit_failure;
@@ -849,6 +853,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
}
case AUDIT_SET: {
struct audit_status s;
+
memset(&s, 0, sizeof(s));
/* guard against past and future API changes */
memcpy(&s, data, min_t(size_t, sizeof(s), nlmsg_len(nlh)));
@@ -1141,6 +1146,7 @@ static void __net_exit audit_net_exit(struct net *net)
{
struct audit_net *aunet = net_generic(net, audit_net_id);
struct sock *sock = aunet->nlsk;
+
if (sock == audit_sock) {
audit_pid = 0;
audit_sock = NULL;
@@ -1183,12 +1189,15 @@ static int __init audit_init(void)
return 0;
}
-__initcall(audit_init);
+device_initcall(audit_init);
/* Process kernel command-line parameter at boot time. audit=0 or audit=1. */
static int __init audit_enable(char *str)
{
- audit_default = !!simple_strtol(str, NULL, 0);
+ int rc = kstrtol(str, 0, (long *)&audit_default);
+
+ if (rc)
+ return rc;
if (!audit_default)
audit_initialized = AUDIT_DISABLED;
@@ -1239,7 +1248,7 @@ static void audit_buffer_free(struct audit_buffer *ab)
spin_unlock_irqrestore(&audit_freelist_lock, flags);
}
-static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
+static struct audit_buffer *audit_buffer_alloc(struct audit_context *ctx,
gfp_t gfp_mask, int type)
{
unsigned long flags;
@@ -1302,7 +1311,7 @@ err:
unsigned int audit_serial(void)
{
static DEFINE_SPINLOCK(serial_lock);
- static unsigned int serial = 0;
+ static unsigned int serial;
unsigned long flags;
unsigned int ret;
@@ -1331,6 +1340,7 @@ static inline void audit_get_stamp(struct audit_context *ctx,
static long wait_for_auditd(long sleep_time)
{
DECLARE_WAITQUEUE(wait, current);
+
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue_exclusive(&audit_backlog_wait, &wait);
@@ -1394,8 +1404,8 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
continue;
}
}
- if (audit_rate_check() && printk_ratelimit())
- pr_warn("audit_backlog=%d > audit_backlog_limit=%d\n",
+ if (audit_rate_check())
+ pr_warn_ratelimited("audit_backlog=%d > audit_backlog_limit=%d\n",
skb_queue_len(&audit_skb_queue),
audit_backlog_limit);
audit_log_lost("backlog limit exceeded");
@@ -1418,6 +1428,7 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
t.tv_sec, t.tv_nsec/1000000, serial);
return ab;
}
+EXPORT_SYMBOL(audit_log_start);
/**
* audit_expand - expand skb in the audit buffer
@@ -1505,6 +1516,7 @@ void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
audit_log_vformat(ab, fmt, args);
va_end(args);
}
+EXPORT_SYMBOL(audit_log_format);
/**
* audit_log_hex - convert a buffer to hex and append it to the audit skb
@@ -1586,6 +1598,7 @@ void audit_log_n_string(struct audit_buffer *ab, const char *string,
int audit_string_contains_control(const char *string, size_t len)
{
const unsigned char *p;
+
for (p = string; p < (const unsigned char *)string + len; p++) {
if (*p == '"' || *p < 0x21 || *p > 0x7e)
return 1;
@@ -1749,6 +1762,7 @@ void audit_log_name(struct audit_context *context, struct audit_names *n,
struct path *path, int record_num, int *call_panic)
{
struct audit_buffer *ab;
+
ab = audit_log_start(context, GFP_KERNEL, AUDIT_PATH);
if (!ab)
return;
@@ -1794,6 +1808,7 @@ void audit_log_name(struct audit_context *context, struct audit_names *n,
if (n->osid != 0) {
char *ctx = NULL;
u32 len;
+
if (security_secid_to_secctx(
n->osid, &ctx, &len)) {
audit_log_format(ab, " osid=%u", n->osid);
@@ -1807,7 +1822,7 @@ void audit_log_name(struct audit_context *context, struct audit_names *n,
/* log the audit_names record type */
audit_log_format(ab, " nametype=");
- switch(n->type) {
+ switch (n->type) {
case AUDIT_TYPE_NORMAL:
audit_log_format(ab, "NORMAL");
break;
@@ -1982,6 +1997,7 @@ void audit_log_end(struct audit_buffer *ab)
}
audit_buffer_free(ab);
}
+EXPORT_SYMBOL(audit_log_end);
/**
* audit_log - Log an audit record
@@ -2009,6 +2025,7 @@ void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
audit_log_end(ab);
}
}
+EXPORT_SYMBOL(audit_log);
#ifdef CONFIG_SECURITY
/**
@@ -2036,7 +2053,3 @@ void audit_log_secctx(struct audit_buffer *ab, u32 secid)
EXPORT_SYMBOL(audit_log_secctx);
#endif
-EXPORT_SYMBOL(audit_log_start);
-EXPORT_SYMBOL(audit_log_end);
-EXPORT_SYMBOL(audit_log_format);
-EXPORT_SYMBOL(audit_log);
--
1.7.10.4
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