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-rw-r--r--drivers/char/random.c80
1 files changed, 35 insertions, 45 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index f43c89f7c449..32118598a71b 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -272,7 +272,7 @@ static int random_write_wakeup_thresh = 128;
static int trickle_thresh __read_mostly = INPUT_POOL_WORDS * 28;
-static DEFINE_PER_CPU(int, trickle_count) = 0;
+static DEFINE_PER_CPU(int, trickle_count);
/*
* A pool of size .poolwords is stirred with a primitive polynomial
@@ -372,15 +372,16 @@ static DECLARE_WAIT_QUEUE_HEAD(random_read_wait);
static DECLARE_WAIT_QUEUE_HEAD(random_write_wait);
#if 0
-static int debug = 0;
+static int debug;
module_param(debug, bool, 0644);
-#define DEBUG_ENT(fmt, arg...) do { if (debug) \
- printk(KERN_DEBUG "random %04d %04d %04d: " \
- fmt,\
- input_pool.entropy_count,\
- blocking_pool.entropy_count,\
- nonblocking_pool.entropy_count,\
- ## arg); } while (0)
+#define DEBUG_ENT(fmt, arg...) do { \
+ if (debug) \
+ printk(KERN_DEBUG "random %04d %04d %04d: " \
+ fmt,\
+ input_pool.entropy_count,\
+ blocking_pool.entropy_count,\
+ nonblocking_pool.entropy_count,\
+ ## arg); } while (0)
#else
#define DEBUG_ENT(fmt, arg...) do {} while (0)
#endif
@@ -551,7 +552,7 @@ static void credit_entropy_store(struct entropy_store *r, int nbits)
/* There is one of these per entropy source */
struct timer_rand_state {
cycles_t last_time;
- long last_delta,last_delta2;
+ long last_delta, last_delta2;
unsigned dont_count_entropy:1;
};
@@ -624,7 +625,7 @@ static void add_timer_randomness(struct timer_rand_state *state, unsigned num)
min_t(int, fls(delta>>1), 11));
}
- if(input_pool.entropy_count >= random_read_wakeup_thresh)
+ if (input_pool.entropy_count >= random_read_wakeup_thresh)
wake_up_interruptible(&random_read_wait);
out:
@@ -677,7 +678,7 @@ void add_disk_randomness(struct gendisk *disk)
*
*********************************************************************/
-static ssize_t extract_entropy(struct entropy_store *r, void * buf,
+static ssize_t extract_entropy(struct entropy_store *r, void *buf,
size_t nbytes, int min, int rsvd);
/*
@@ -704,8 +705,8 @@ static void xfer_secondary_pool(struct entropy_store *r, size_t nbytes)
"(%d of %d requested)\n",
r->name, bytes * 8, nbytes * 8, r->entropy_count);
- bytes=extract_entropy(r->pull, tmp, bytes,
- random_read_wakeup_thresh / 8, rsvd);
+ bytes = extract_entropy(r->pull, tmp, bytes,
+ random_read_wakeup_thresh / 8, rsvd);
add_entropy_words(r, tmp, (bytes + 3) / 4);
credit_entropy_store(r, bytes*8);
}
@@ -744,7 +745,7 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min,
if (r->limit && nbytes + reserved >= r->entropy_count / 8)
nbytes = r->entropy_count/8 - reserved;
- if(r->entropy_count / 8 >= nbytes + reserved)
+ if (r->entropy_count / 8 >= nbytes + reserved)
r->entropy_count -= nbytes*8;
else
r->entropy_count = reserved;
@@ -802,7 +803,7 @@ static void extract_buf(struct entropy_store *r, __u8 *out)
memset(buf, 0, sizeof(buf));
}
-static ssize_t extract_entropy(struct entropy_store *r, void * buf,
+static ssize_t extract_entropy(struct entropy_store *r, void *buf,
size_t nbytes, int min, int reserved)
{
ssize_t ret = 0, i;
@@ -872,7 +873,6 @@ void get_random_bytes(void *buf, int nbytes)
{
extract_entropy(&nonblocking_pool, buf, nbytes, 0, 0);
}
-
EXPORT_SYMBOL(get_random_bytes);
/*
@@ -940,7 +940,7 @@ void rand_initialize_disk(struct gendisk *disk)
#endif
static ssize_t
-random_read(struct file * file, char __user * buf, size_t nbytes, loff_t *ppos)
+random_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
{
ssize_t n, retval = 0, count = 0;
@@ -1002,8 +1002,7 @@ random_read(struct file * file, char __user * buf, size_t nbytes, loff_t *ppos)
}
static ssize_t
-urandom_read(struct file * file, char __user * buf,
- size_t nbytes, loff_t *ppos)
+urandom_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
{
return extract_entropy_user(&nonblocking_pool, buf, nbytes);
}
@@ -1045,9 +1044,8 @@ write_pool(struct entropy_store *r, const char __user *buffer, size_t count)
return 0;
}
-static ssize_t
-random_write(struct file * file, const char __user * buffer,
- size_t count, loff_t *ppos)
+static ssize_t random_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *ppos)
{
size_t ret;
struct inode *inode = file->f_path.dentry->d_inode;
@@ -1064,9 +1062,8 @@ random_write(struct file * file, const char __user * buffer,
return (ssize_t)count;
}
-static int
-random_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg)
+static int random_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
{
int size, ent_count;
int __user *p = (int __user *)arg;
@@ -1157,7 +1154,6 @@ void generate_random_uuid(unsigned char uuid_out[16])
/* Set the UUID variant to DCE */
uuid_out[8] = (uuid_out[8] & 0x3F) | 0x80;
}
-
EXPORT_SYMBOL(generate_random_uuid);
/********************************************************************
@@ -1339,7 +1335,7 @@ ctl_table random_table[] = {
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-static __u32 twothirdsMD4Transform (__u32 const buf[4], __u32 const in[12])
+static __u32 twothirdsMD4Transform(__u32 const buf[4], __u32 const in[12])
{
__u32 a = buf[0], b = buf[1], c = buf[2], d = buf[3];
@@ -1487,8 +1483,8 @@ __u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr,
*/
memcpy(hash, saddr, 16);
- hash[4]=((__force u16)sport << 16) + (__force u16)dport;
- memcpy(&hash[5],keyptr->secret,sizeof(__u32) * 7);
+ hash[4] = ((__force u16)sport << 16) + (__force u16)dport;
+ memcpy(&hash[5], keyptr->secret, sizeof(__u32) * 7);
seq = twothirdsMD4Transform((const __u32 *)daddr, hash) & HASH_MASK;
seq += keyptr->count;
@@ -1538,10 +1534,10 @@ __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr,
* Note that the words are placed into the starting vector, which is
* then mixed with a partial MD4 over random data.
*/
- hash[0]=(__force u32)saddr;
- hash[1]=(__force u32)daddr;
- hash[2]=((__force u16)sport << 16) + (__force u16)dport;
- hash[3]=keyptr->secret[11];
+ hash[0] = (__force u32)saddr;
+ hash[1] = (__force u32)daddr;
+ hash[2] = ((__force u16)sport << 16) + (__force u16)dport;
+ hash[3] = keyptr->secret[11];
seq = half_md4_transform(hash, keyptr->secret) & HASH_MASK;
seq += keyptr->count;
@@ -1556,10 +1552,7 @@ __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr,
* Choosing a clock of 64 ns period is OK. (period of 274 s)
*/
seq += ktime_to_ns(ktime_get_real()) >> 6;
-#if 0
- printk("init_seq(%lx, %lx, %d, %d) = %d\n",
- saddr, daddr, sport, dport, seq);
-#endif
+
return seq;
}
@@ -1582,14 +1575,15 @@ u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport)
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, __be16 dport)
+u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
+ __be16 dport)
{
struct keydata *keyptr = get_keyptr();
u32 hash[12];
memcpy(hash, saddr, 16);
hash[4] = (__force u32)dport;
- memcpy(&hash[5],keyptr->secret,sizeof(__u32) * 7);
+ memcpy(&hash[5], keyptr->secret, sizeof(__u32) * 7);
return twothirdsMD4Transform((const __u32 *)daddr, hash);
}
@@ -1617,13 +1611,9 @@ u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr,
seq += ktime_to_ns(ktime_get_real());
seq &= (1ull << 48) - 1;
-#if 0
- printk("dccp init_seq(%lx, %lx, %d, %d) = %d\n",
- saddr, daddr, sport, dport, seq);
-#endif
+
return seq;
}
-
EXPORT_SYMBOL(secure_dccp_sequence_number);
#endif
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-19 12:12:30 +0000