Author: cem
Date: Fri Dec 13 04:12:13 2019
New Revision: 355692
URL: https://svnweb.freebsd.org/changeset/base/355692
Log:
fsirand(8): Just use arc4random(3)
Remove single use of dubious srandomdev(3) + random(3) and replace with
arc4random(3), as is used already in this program.
Follow-up question: Do we really need this program anymore? In base?
Modified:
head/sbin/fsirand/fsirand.c
Modified: head/sbin/fsirand/fsirand.c
==============================================================================
--- head/sbin/fsirand/fsirand.c Fri Dec 13 04:03:05 2019 (r355691)
+++ head/sbin/fsirand/fsirand.c Fri Dec 13 04:12:13 2019 (r355692)
@@ -83,8 +83,6 @@ main(int argc, char *argv[])
if (argc - optind < 1)
usage();
- srandomdev();
-
/* Increase our data size to the max */
if (getrlimit(RLIMIT_DATA, &rl) == 0) {
rl.rlim_cur = rl.rlim_max;
@@ -167,7 +165,7 @@ fsirand(char *device)
if (!printonly) {
/* Randomize fs_id and write out new sblock and backups */
sblock->fs_id[0] = (u_int32_t)time(NULL);
- sblock->fs_id[1] = random();
+ sblock->fs_id[1] = arc4random();
if (sbput(devfd, sblock, sblock->fs_ncg) != 0) {
warn("could not write updated superblock");
return (1);
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