diff options
Diffstat (limited to 'target/linux/generic/patches-3.18/941-ocf_20120127.patch')
| -rw-r--r-- | target/linux/generic/patches-3.18/941-ocf_20120127.patch | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.18/941-ocf_20120127.patch b/target/linux/generic/patches-3.18/941-ocf_20120127.patch new file mode 100644 index 0000000000..e67cb04221 --- /dev/null +++ b/target/linux/generic/patches-3.18/941-ocf_20120127.patch @@ -0,0 +1,166 @@ +--- 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. +@@ -938,6 +948,63 @@ 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, NULL); ++ ++ 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_thresh) ++ 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_thresh); ++ ++ count = random_write_wakeup_thresh - input_pool.entropy_count; ++ ++ /* likely we got woken up due to a signal */ ++ if (count <= 0) count = random_read_wakeup_thresh; ++ ++ pr_notice("requesting %d bits from input_wait()er %d<%d\n", ++ count, ++ input_pool.entropy_count, random_write_wakeup_thresh); ++ ++ 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 +@@ -13,6 +13,10 @@ 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 void get_random_bytes_arch(void *buf, int nbytes); + void generate_random_uuid(unsigned char uuid_out[16]); +--- a/kernel/pid.c ++++ b/kernel/pid.c +@@ -425,6 +425,7 @@ 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) + { |