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| author | ache <ache@FreeBSD.org> | 1997-03-30 23:33:29 +0000 |
|---|---|---|
| committer | ache <ache@FreeBSD.org> | 1997-03-30 23:33:29 +0000 |
| commit | d2ba14107c688d7aa26e4722e08c1c6dc91068bb (patch) | |
| tree | 38b9f064ee2d7f39364a67440b88624a3036d942 /games | |
| parent | f673899804337487c03c460fe7cbebca19789781 (diff) | |
| download | FreeBSD-src-d2ba14107c688d7aa26e4722e08c1c6dc91068bb.zip FreeBSD-src-d2ba14107c688d7aa26e4722e08c1c6dc91068bb.tar.gz | |
Use srandomdev() now
Add range checking for invalid denominator values
Diffstat (limited to 'games')
| -rw-r--r-- | games/random/random.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/games/random/random.c b/games/random/random.c index acb882b..4d17b53 100644 --- a/games/random/random.c +++ b/games/random/random.c @@ -62,7 +62,6 @@ main(argc, argv) char *argv[]; { extern int optind; - time_t now; double denom; int ch, random_exit, selected, unbuffer_output; char *ep; @@ -94,16 +93,18 @@ main(argc, argv) denom = strtod(*argv, &ep); if (errno == ERANGE) err(1, "%s", *argv); - if (denom == 0 || *ep != '\0') + if (denom <= 0 || *ep != '\0') errx(1, "denominator is not valid."); + if (random_exit && denom > 255) + errx(1, "denominator must be <= 255 for random exit."); break; default: usage(); /* NOTREACHED */ } - (void)time(&now); - srandom((unsigned long)(now ^ getpid())); + if (srandomdev() < 0) + srandom(time(NULL) ^ getpid()); /* Compute a random exit status between 0 and denom - 1. */ if (random_exit) |
