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authororivej <orivej@yandex-team.ru>2022-02-10 16:44:49 +0300
committerDaniil Cherednik <dcherednik@yandex-team.ru>2022-02-10 16:44:49 +0300
commit718c552901d703c502ccbefdfc3c9028d608b947 (patch)
tree46534a98bbefcd7b1f3faa5b52c138ab27db75b7 /contrib/libs/openssl/crypto/rand/rand_unix.c
parente9656aae26e0358d5378e5b63dcac5c8dbe0e4d0 (diff)
downloadydb-718c552901d703c502ccbefdfc3c9028d608b947.tar.gz
Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/openssl/crypto/rand/rand_unix.c')
-rw-r--r--contrib/libs/openssl/crypto/rand/rand_unix.c264
1 files changed, 132 insertions, 132 deletions
diff --git a/contrib/libs/openssl/crypto/rand/rand_unix.c b/contrib/libs/openssl/crypto/rand/rand_unix.c
index 5766e5abe7..9ea7a2857f 100644
--- a/contrib/libs/openssl/crypto/rand/rand_unix.c
+++ b/contrib/libs/openssl/crypto/rand/rand_unix.c
@@ -14,17 +14,17 @@
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/rand.h>
-#include <openssl/crypto.h>
+#include <openssl/crypto.h>
#include "rand_local.h"
#include "crypto/rand.h"
#include <stdio.h>
#include "internal/dso.h"
-#ifdef __linux
-# include <sys/syscall.h>
-# ifdef DEVRANDOM_WAIT
-# include <sys/shm.h>
-# include <sys/utsname.h>
-# endif
+#ifdef __linux
+# include <sys/syscall.h>
+# ifdef DEVRANDOM_WAIT
+# include <sys/shm.h>
+# include <sys/utsname.h>
+# endif
#endif
#if (defined(__FreeBSD__) || defined(__NetBSD__)) && !defined(OPENSSL_SYS_UEFI)
# include <sys/types.h>
@@ -286,12 +286,12 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
# endif
# if defined(OPENSSL_RAND_SEED_GETRANDOM)
-
-# if defined(__linux) && !defined(__NR_getrandom)
+
+# if defined(__linux) && !defined(__NR_getrandom)
# if defined(__arm__)
-# define __NR_getrandom (__NR_SYSCALL_BASE+384)
-# elif defined(__i386__)
-# define __NR_getrandom 355
+# define __NR_getrandom (__NR_SYSCALL_BASE+384)
+# elif defined(__i386__)
+# define __NR_getrandom 355
# elif defined(__x86_64__)
# if defined(__ILP32__)
# define __NR_getrandom (__X32_SYSCALL_BIT + 318)
@@ -340,9 +340,9 @@ static ssize_t sysctl_random(char *buf, size_t buflen)
# define __NR_getrandom 278
# else /* generic */
# define __NR_getrandom 278
-# endif
-# endif
-
+# endif
+# endif
+
/*
* syscall_random(): Try to get random data using a system call
* returns the number of bytes returned in buf, or < 0 on error.
@@ -404,8 +404,8 @@ static ssize_t syscall_random(void *buf, size_t buflen)
# endif
/* Linux supports this since version 3.17 */
-# if defined(__linux) && defined(__NR_getrandom)
- return syscall(__NR_getrandom, buf, buflen, 0);
+# if defined(__linux) && defined(__NR_getrandom)
+ return syscall(__NR_getrandom, buf, buflen, 0);
# elif (defined(__FreeBSD__) || defined(__NetBSD__)) && defined(KERN_ARND)
return sysctl_random(buf, buflen);
# else
@@ -428,91 +428,91 @@ static int keep_random_devices_open = 1;
# if defined(__linux) && defined(DEVRANDOM_WAIT) \
&& defined(OPENSSL_RAND_SEED_GETRANDOM)
-static void *shm_addr;
-
-static void cleanup_shm(void)
-{
- shmdt(shm_addr);
-}
-
+static void *shm_addr;
+
+static void cleanup_shm(void)
+{
+ shmdt(shm_addr);
+}
+
/*
- * Ensure that the system randomness source has been adequately seeded.
- * This is done by having the first start of libcrypto, wait until the device
- * /dev/random becomes able to supply a byte of entropy. Subsequent starts
- * of the library and later reseedings do not need to do this.
- */
-static int wait_random_seeded(void)
-{
- static int seeded = OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID < 0;
- static const int kernel_version[] = { DEVRANDOM_SAFE_KERNEL };
- int kernel[2];
- int shm_id, fd, r;
- char c, *p;
- struct utsname un;
- fd_set fds;
-
- if (!seeded) {
- /* See if anything has created the global seeded indication */
- if ((shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1, 0)) == -1) {
- /*
- * Check the kernel's version and fail if it is too recent.
- *
- * Linux kernels from 4.8 onwards do not guarantee that
- * /dev/urandom is properly seeded when /dev/random becomes
- * readable. However, such kernels support the getentropy(2)
- * system call and this should always succeed which renders
- * this alternative but essentially identical source moot.
- */
- if (uname(&un) == 0) {
- kernel[0] = atoi(un.release);
- p = strchr(un.release, '.');
- kernel[1] = p == NULL ? 0 : atoi(p + 1);
- if (kernel[0] > kernel_version[0]
- || (kernel[0] == kernel_version[0]
- && kernel[1] >= kernel_version[1])) {
- return 0;
- }
- }
- /* Open /dev/random and wait for it to be readable */
- if ((fd = open(DEVRANDOM_WAIT, O_RDONLY)) != -1) {
- if (DEVRANDM_WAIT_USE_SELECT && fd < FD_SETSIZE) {
- FD_ZERO(&fds);
- FD_SET(fd, &fds);
- while ((r = select(fd + 1, &fds, NULL, NULL, NULL)) < 0
- && errno == EINTR);
- } else {
- while ((r = read(fd, &c, 1)) < 0 && errno == EINTR);
- }
- close(fd);
- if (r == 1) {
- seeded = 1;
- /* Create the shared memory indicator */
- shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1,
- IPC_CREAT | S_IRUSR | S_IRGRP | S_IROTH);
- }
- }
- }
- if (shm_id != -1) {
- seeded = 1;
- /*
- * Map the shared memory to prevent its premature destruction.
- * If this call fails, it isn't a big problem.
- */
- shm_addr = shmat(shm_id, NULL, SHM_RDONLY);
- if (shm_addr != (void *)-1)
- OPENSSL_atexit(&cleanup_shm);
- }
- }
- return seeded;
-}
+ * Ensure that the system randomness source has been adequately seeded.
+ * This is done by having the first start of libcrypto, wait until the device
+ * /dev/random becomes able to supply a byte of entropy. Subsequent starts
+ * of the library and later reseedings do not need to do this.
+ */
+static int wait_random_seeded(void)
+{
+ static int seeded = OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID < 0;
+ static const int kernel_version[] = { DEVRANDOM_SAFE_KERNEL };
+ int kernel[2];
+ int shm_id, fd, r;
+ char c, *p;
+ struct utsname un;
+ fd_set fds;
+
+ if (!seeded) {
+ /* See if anything has created the global seeded indication */
+ if ((shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1, 0)) == -1) {
+ /*
+ * Check the kernel's version and fail if it is too recent.
+ *
+ * Linux kernels from 4.8 onwards do not guarantee that
+ * /dev/urandom is properly seeded when /dev/random becomes
+ * readable. However, such kernels support the getentropy(2)
+ * system call and this should always succeed which renders
+ * this alternative but essentially identical source moot.
+ */
+ if (uname(&un) == 0) {
+ kernel[0] = atoi(un.release);
+ p = strchr(un.release, '.');
+ kernel[1] = p == NULL ? 0 : atoi(p + 1);
+ if (kernel[0] > kernel_version[0]
+ || (kernel[0] == kernel_version[0]
+ && kernel[1] >= kernel_version[1])) {
+ return 0;
+ }
+ }
+ /* Open /dev/random and wait for it to be readable */
+ if ((fd = open(DEVRANDOM_WAIT, O_RDONLY)) != -1) {
+ if (DEVRANDM_WAIT_USE_SELECT && fd < FD_SETSIZE) {
+ FD_ZERO(&fds);
+ FD_SET(fd, &fds);
+ while ((r = select(fd + 1, &fds, NULL, NULL, NULL)) < 0
+ && errno == EINTR);
+ } else {
+ while ((r = read(fd, &c, 1)) < 0 && errno == EINTR);
+ }
+ close(fd);
+ if (r == 1) {
+ seeded = 1;
+ /* Create the shared memory indicator */
+ shm_id = shmget(OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID, 1,
+ IPC_CREAT | S_IRUSR | S_IRGRP | S_IROTH);
+ }
+ }
+ }
+ if (shm_id != -1) {
+ seeded = 1;
+ /*
+ * Map the shared memory to prevent its premature destruction.
+ * If this call fails, it isn't a big problem.
+ */
+ shm_addr = shmat(shm_id, NULL, SHM_RDONLY);
+ if (shm_addr != (void *)-1)
+ OPENSSL_atexit(&cleanup_shm);
+ }
+ }
+ return seeded;
+}
# else /* defined __linux && DEVRANDOM_WAIT && OPENSSL_RAND_SEED_GETRANDOM */
-static int wait_random_seeded(void)
-{
- return 1;
-}
-# endif
-
-/*
+static int wait_random_seeded(void)
+{
+ return 1;
+}
+# endif
+
+/*
* Verify that the file descriptor associated with the random source is
* still valid. The rationale for doing this is the fact that it is not
* uncommon for daemons to close all open file handles when daemonizing.
@@ -638,12 +638,12 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
# if defined(OPENSSL_RAND_SEED_NONE)
return rand_pool_entropy_available(pool);
# else
- size_t entropy_available;
+ size_t entropy_available;
# if defined(OPENSSL_RAND_SEED_GETRANDOM)
{
- size_t bytes_needed;
- unsigned char *buffer;
+ size_t bytes_needed;
+ unsigned char *buffer;
ssize_t bytes;
/* Maximum allowed number of consecutive unsuccessful attempts */
int attempts = 3;
@@ -673,16 +673,16 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
# endif
# if defined(OPENSSL_RAND_SEED_DEVRANDOM)
- if (wait_random_seeded()) {
- size_t bytes_needed;
- unsigned char *buffer;
+ if (wait_random_seeded()) {
+ size_t bytes_needed;
+ unsigned char *buffer;
size_t i;
- bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
- for (i = 0; bytes_needed > 0 && i < OSSL_NELEM(random_device_paths);
- i++) {
+ bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
+ for (i = 0; bytes_needed > 0 && i < OSSL_NELEM(random_device_paths);
+ i++) {
ssize_t bytes = 0;
- /* Maximum number of consecutive unsuccessful attempts */
+ /* Maximum number of consecutive unsuccessful attempts */
int attempts = 3;
const int fd = get_random_device(i);
@@ -696,7 +696,7 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
if (bytes > 0) {
rand_pool_add_end(pool, bytes, 8 * bytes);
bytes_needed -= bytes;
- attempts = 3; /* reset counter on successful attempt */
+ attempts = 3; /* reset counter on successful attempt */
} else if (bytes < 0 && errno != EINTR) {
break;
}
@@ -704,7 +704,7 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
if (bytes < 0 || !keep_random_devices_open)
close_random_device(i);
- bytes_needed = rand_pool_bytes_needed(pool, 1);
+ bytes_needed = rand_pool_bytes_needed(pool, 1);
}
entropy_available = rand_pool_entropy_available(pool);
if (entropy_available > 0)
@@ -725,29 +725,29 @@ size_t rand_pool_acquire_entropy(RAND_POOL *pool)
# endif
# if defined(OPENSSL_RAND_SEED_EGD)
- {
+ {
static const char *paths[] = { DEVRANDOM_EGD, NULL };
- size_t bytes_needed;
- unsigned char *buffer;
+ size_t bytes_needed;
+ unsigned char *buffer;
int i;
- bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
- for (i = 0; bytes_needed > 0 && paths[i] != NULL; i++) {
- size_t bytes = 0;
- int num;
-
+ bytes_needed = rand_pool_bytes_needed(pool, 1 /*entropy_factor*/);
+ for (i = 0; bytes_needed > 0 && paths[i] != NULL; i++) {
+ size_t bytes = 0;
+ int num;
+
buffer = rand_pool_add_begin(pool, bytes_needed);
- num = RAND_query_egd_bytes(paths[i],
- buffer, (int)bytes_needed);
- if (num == (int)bytes_needed)
- bytes = bytes_needed;
+ num = RAND_query_egd_bytes(paths[i],
+ buffer, (int)bytes_needed);
+ if (num == (int)bytes_needed)
+ bytes = bytes_needed;
- rand_pool_add_end(pool, bytes, 8 * bytes);
- bytes_needed = rand_pool_bytes_needed(pool, 1);
+ rand_pool_add_end(pool, bytes, 8 * bytes);
+ bytes_needed = rand_pool_bytes_needed(pool, 1);
}
- entropy_available = rand_pool_entropy_available(pool);
- if (entropy_available > 0)
- return entropy_available;
+ entropy_available = rand_pool_entropy_available(pool);
+ if (entropy_available > 0)
+ return entropy_available;
}
# endif
@@ -781,18 +781,18 @@ int rand_pool_add_nonce_data(RAND_POOL *pool)
int rand_pool_add_additional_data(RAND_POOL *pool)
{
struct {
- int fork_id;
+ int fork_id;
CRYPTO_THREAD_ID tid;
uint64_t time;
} data = { 0 };
/*
* Add some noise from the thread id and a high resolution timer.
- * The fork_id adds some extra fork-safety.
+ * The fork_id adds some extra fork-safety.
* The thread id adds a little randomness if the drbg is accessed
* concurrently (which is the case for the <master> drbg).
*/
- data.fork_id = openssl_get_fork_id();
+ data.fork_id = openssl_get_fork_id();
data.tid = CRYPTO_THREAD_get_current_id();
data.time = get_timer_bits();