diff options
Diffstat (limited to 'lib/libc/stdlib/random.c')
-rw-r--r-- | lib/libc/stdlib/random.c | 34 |
1 files changed, 13 insertions, 21 deletions
diff --git a/lib/libc/stdlib/random.c b/lib/libc/stdlib/random.c index f7be4a7..a3c054e 100644 --- a/lib/libc/stdlib/random.c +++ b/lib/libc/stdlib/random.c @@ -216,10 +216,8 @@ static int rand_deg = DEG_3; static int rand_sep = SEP_3; static uint32_t *end_ptr = &randtbl[DEG_3 + 1]; -static inline uint32_t good_rand(int32_t); - -static inline uint32_t good_rand (x) - int32_t x; +static inline uint32_t +good_rand(int32_t x) { #ifdef USE_WEAK_SEEDING /* @@ -264,8 +262,7 @@ static inline uint32_t good_rand (x) * for default usage relies on values produced by this routine. */ void -srandom(x) - unsigned long x; +srandom(unsigned long x) { int i, lim; @@ -295,7 +292,7 @@ srandom(x) * a fixed seed. */ void -srandomdev() +srandomdev(void) { int fd, done; size_t len; @@ -306,7 +303,7 @@ srandomdev() len = rand_deg * sizeof state[0]; done = 0; - fd = _open("/dev/random", O_RDONLY, 0); + fd = _open("/dev/random", O_RDONLY | O_CLOEXEC, 0); if (fd >= 0) { if (_read(fd, (void *) state, len) == (ssize_t) len) done = 1; @@ -315,10 +312,9 @@ srandomdev() if (!done) { struct timeval tv; - unsigned long junk; gettimeofday(&tv, NULL); - srandom((getpid() << 16) ^ tv.tv_sec ^ tv.tv_usec ^ junk); + srandom((getpid() << 16) ^ tv.tv_sec ^ tv.tv_usec); return; } @@ -352,10 +348,7 @@ srandomdev() * complain about mis-alignment, but you should disregard these messages. */ char * -initstate(seed, arg_state, n) - unsigned long seed; /* seed for R.N.G. */ - char *arg_state; /* pointer to state array */ - long n; /* # bytes of state info */ +initstate(unsigned long seed, char *arg_state, long n) { char *ostate = (char *)(&state[-1]); uint32_t *int_arg_state = (uint32_t *)arg_state; @@ -367,7 +360,7 @@ initstate(seed, arg_state, n) if (n < BREAK_0) { (void)fprintf(stderr, "random: not enough state (%ld bytes); ignored.\n", n); - return(0); + return (0); } if (n < BREAK_1) { rand_type = TYPE_0; @@ -397,7 +390,7 @@ initstate(seed, arg_state, n) int_arg_state[0] = rand_type; else int_arg_state[0] = MAX_TYPES * (rptr - state) + rand_type; - return(ostate); + return (ostate); } /* @@ -420,8 +413,7 @@ initstate(seed, arg_state, n) * complain about mis-alignment, but you should disregard these messages. */ char * -setstate(arg_state) - char *arg_state; /* pointer to state array */ +setstate(char *arg_state) { uint32_t *new_state = (uint32_t *)arg_state; uint32_t type = new_state[0] % MAX_TYPES; @@ -452,7 +444,7 @@ setstate(arg_state) fptr = &state[(rear + rand_sep) % rand_deg]; } end_ptr = &state[rand_deg]; /* set end_ptr too */ - return(ostate); + return (ostate); } /* @@ -473,7 +465,7 @@ setstate(arg_state) * Returns a 31-bit random number. */ long -random() +random(void) { uint32_t i; uint32_t *f, *r; @@ -498,5 +490,5 @@ random() fptr = f; rptr = r; } - return((long)i); + return ((long)i); } |