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--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -139,6 +139,9 @@
* that might otherwise be identical and have very little entropy
* available to them (particularly common in the embedded world).
*
+ * void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
+ * int random_input_wait(void);
+ *
* add_input_randomness() uses the input layer interrupt timing, as well as
* the event type information from the hardware.
*
@@ -152,6 +155,13 @@
* seek times do not make for good sources of entropy, as their seek
* times are usually fairly consistent.
*
+ * random_input_words() just provides a raw block of entropy to the input
+ * pool, such as from a hardware entropy generator.
+ *
+ * random_input_wait() suspends the caller until such time as the
+ * entropy pool falls below the write threshold, and returns a count of how
+ * much entropy (in bits) is needed to sustain the pool.
+ *
* All of these routines try to estimate how many bits of randomness a
* particular randomness source. They do this by keeping track of the
* first and second order deltas of the event timings.
@@ -958,6 +968,63 @@ void add_disk_randomness(struct gendisk
EXPORT_SYMBOL_GPL(add_disk_randomness);
#endif
+/*
+ * random_input_words - add bulk entropy to pool
+ *
+ * @buf: buffer to add
+ * @wordcount: number of __u32 words to add
+ * @ent_count: total amount of entropy (in bits) to credit
+ *
+ * this provides bulk input of entropy to the input pool
+ *
+ */
+void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
+{
+ mix_pool_bytes(&input_pool, buf, wordcount*4);
+
+ credit_entropy_bits(&input_pool, ent_count);
+
+ pr_notice("crediting %d bits => %d\n",
+ ent_count, input_pool.entropy_count);
+ /*
+ * Wake up waiting processes if we have enough
+ * entropy.
+ */
+ if (input_pool.entropy_count >= random_read_wakeup_bits)
+ wake_up_interruptible(&random_read_wait);
+}
+EXPORT_SYMBOL(random_input_words);
+
+/*
+ * random_input_wait - wait until random needs entropy
+ *
+ * this function sleeps until the /dev/random subsystem actually
+ * needs more entropy, and then return the amount of entropy
+ * that it would be nice to have added to the system.
+ */
+int random_input_wait(void)
+{
+ int count;
+
+ wait_event_interruptible(random_write_wait,
+ input_pool.entropy_count < random_write_wakeup_bits);
+
+ count = random_write_wakeup_bits - input_pool.entropy_count;
+
+ /* likely we got woken up due to a signal */
+ if (count <= 0) count = random_read_wakeup_bits;
+
+ pr_notice("requesting %d bits from input_wait()er %d<%d\n",
+ count,
+ input_pool.entropy_count, random_write_wakeup_bits);
+
+ return count;
+}
+EXPORT_SYMBOL(random_input_wait);
+
+
+#define EXTRACT_SIZE 10
+
/*********************************************************************
*
* Entropy extraction routines
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -140,6 +140,7 @@ pid_t f_getown(struct file *filp)
read_unlock(&filp->f_owner.lock);
return pid;
}
+EXPORT_SYMBOL(sys_dup);
static int f_setown_ex(struct file *filp, unsigned long arg)
{
--- a/include/linux/miscdevice.h
+++ b/include/linux/miscdevice.h
@@ -19,6 +19,7 @@
#define APOLLO_MOUSE_MINOR 7 /* unused */
#define PC110PAD_MINOR 9 /* unused */
/*#define ADB_MOUSE_MINOR 10 FIXME OBSOLETE */
+#define CRYPTODEV_MINOR 70 /* /dev/crypto */
#define WATCHDOG_MINOR 130 /* Watchdog timer */
#define TEMP_MINOR 131 /* Temperature Sensor */
#define RTC_MINOR 135
--- a/include/uapi/linux/random.h
+++ b/include/uapi/linux/random.h
@@ -34,6 +34,30 @@
/* Clear the entropy pool and associated counters. (Superuser only.) */
#define RNDCLEARPOOL _IO( 'R', 0x06 )
+#ifdef CONFIG_FIPS_RNG
+
+/* Size of seed value - equal to AES blocksize */
+#define AES_BLOCK_SIZE_BYTES 16
+#define SEED_SIZE_BYTES AES_BLOCK_SIZE_BYTES
+/* Size of AES key */
+#define KEY_SIZE_BYTES 16
+
+/* ioctl() structure used by FIPS 140-2 Tests */
+struct rand_fips_test {
+ unsigned char key[KEY_SIZE_BYTES]; /* Input */
+ unsigned char datetime[SEED_SIZE_BYTES]; /* Input */
+ unsigned char seed[SEED_SIZE_BYTES]; /* Input */
+ unsigned char result[SEED_SIZE_BYTES]; /* Output */
+};
+
+/* FIPS 140-2 RNG Variable Seed Test. (Superuser only.) */
+#define RNDFIPSVST _IOWR('R', 0x10, struct rand_fips_test)
+
+/* FIPS 140-2 RNG Monte Carlo Test. (Superuser only.) */
+#define RNDFIPSMCT _IOWR('R', 0x11, struct rand_fips_test)
+
+#endif /* #ifdef CONFIG_FIPS_RNG */
+
struct rand_pool_info {
int entropy_count;
int buf_size;
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -22,6 +22,10 @@ extern void add_input_randomness(unsigne
unsigned int value);
extern void add_interrupt_randomness(int irq, int irq_flags);
+extern void random_input_words(__u32 *buf, size_t wordcount, int ent_count);
+extern int random_input_wait(void);
+#define HAS_RANDOM_INPUT_WAIT 1
+
extern void get_random_bytes(void *buf, int nbytes);
extern int add_random_ready_callback(struct random_ready_callback *rdy);
extern void del_random_ready_callback(struct random_ready_callback *rdy);
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -431,6 +431,7 @@ void transfer_pid(struct task_struct *ol
new->pids[type].pid = old->pids[type].pid;
hlist_replace_rcu(&old->pids[type].node, &new->pids[type].node);
}
+EXPORT_SYMBOL(find_task_by_vpid);
struct task_struct *pid_task(struct pid *pid, enum pid_type type)
{
|
