diff options
Diffstat (limited to 'lib/uuid/gen_uuid.c')
| -rw-r--r-- | lib/uuid/gen_uuid.c | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/lib/uuid/gen_uuid.c b/lib/uuid/gen_uuid.c index 42d7563d..22b45134 100644 --- a/lib/uuid/gen_uuid.c +++ b/lib/uuid/gen_uuid.c @@ -176,8 +176,7 @@ static void get_random_bytes(void *buf, int nbytes) { int i, n = nbytes, fd = get_random_fd(); int lose_counter = 0; - unsigned char *cp = (unsigned char *) buf; - unsigned short tmp_seed[3]; + unsigned char *cp = buf; if (fd >= 0) { while (n > 0) { @@ -200,12 +199,16 @@ static void get_random_bytes(void *buf, int nbytes) for (cp = buf, i = 0; i < nbytes; i++) *cp++ ^= (rand() >> 7) & 0xFF; #ifdef DO_JRAND_MIX - memcpy(tmp_seed, jrand_seed, sizeof(tmp_seed)); - jrand_seed[2] = jrand_seed[2] ^ syscall(__NR_gettid); - for (cp = buf, i = 0; i < nbytes; i++) - *cp++ ^= (jrand48(tmp_seed) >> 7) & 0xFF; - memcpy(jrand_seed, tmp_seed, - sizeof(jrand_seed)-sizeof(unsigned short)); + { + unsigned short tmp_seed[3]; + + memcpy(tmp_seed, jrand_seed, sizeof(tmp_seed)); + jrand_seed[2] = jrand_seed[2] ^ syscall(__NR_gettid); + for (cp = buf, i = 0; i < nbytes; i++) + *cp++ ^= (jrand48(tmp_seed) >> 7) & 0xFF; + memcpy(jrand_seed, tmp_seed, + sizeof(jrand_seed) - sizeof(unsigned short)); + } #endif return; @@ -323,10 +326,12 @@ static int get_clock(uint32_t *clock_high, uint32_t *clock_low, state_fd = open("/var/lib/libuuid/clock.txt", O_RDWR|O_CREAT, 0660); (void) umask(save_umask); - state_f = fdopen(state_fd, "r+"); - if (!state_f) { - close(state_fd); - state_fd = -1; + if (state_fd >= 0) { + state_f = fdopen(state_fd, "r+"); + if (!state_f) { + close(state_fd); + state_fd = -1; + } } } fl.l_type = F_WRLCK; @@ -340,7 +345,6 @@ static int get_clock(uint32_t *clock_high, uint32_t *clock_low, if ((errno == EAGAIN) || (errno == EINTR)) continue; fclose(state_f); - close(state_fd); state_fd = -1; break; } @@ -398,9 +402,10 @@ try_again: if (state_fd > 0) { rewind(state_f); - len = fprintf(state_f, + len = fprintf(state_f, "clock: %04x tv: %016lu %08lu adj: %08d\n", - clock_seq, last.tv_sec, last.tv_usec, adjustment); + clock_seq, last.tv_sec, (long)last.tv_usec, + adjustment); fflush(state_f); if (ftruncate(state_fd, len) < 0) { fprintf(state_f, " \n"); @@ -408,7 +413,10 @@ try_again: } rewind(state_f); fl.l_type = F_UNLCK; - fcntl(state_fd, F_SETLK, &fl); + if (fcntl(state_fd, F_SETLK, &fl) < 0) { + fclose(state_f); + state_fd = -1; + } } *clock_high = clock_reg >> 32; |