diff options
| -rw-r--r-- | usr.sbin/jls/jls.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/usr.sbin/jls/jls.c b/usr.sbin/jls/jls.c index 0ad36d1..e8446bb 100644 --- a/usr.sbin/jls/jls.c +++ b/usr.sbin/jls/jls.c @@ -47,20 +47,26 @@ main(void) if (sysctlbyname("security.jail.list", NULL, &len, NULL, 0) == -1) err(1, "sysctlbyname(): security.jail.list"); -retry: - if (len <= 0) - exit(0); - sxp = xp = calloc(len, 1); - if (sxp == NULL) - err(1, "malloc()"); - if (sysctlbyname("security.jail.list", xp, &len, NULL, 0) == -1) { - if (errno == ENOMEM) { - free(sxp); - goto retry; + for (i = 0; i < 4; i++) { + if (len <= 0) + exit(0); + sxp = xp = calloc(len, 1); + if (sxp == NULL) + err(1, "malloc()"); + + if (sysctlbyname("security.jail.list", xp, &len, NULL, 0) == -1) { + if (errno == ENOMEM) { + free(sxp); + sxp = NULL; + continue; + } + err(1, "sysctlbyname(): security.jail.list"); } - err(1, "sysctlbyname(): security.jail.list"); + break; } + if (sxp == NULL) + err(1, "sysctlbyname(): security.jail.list"); if (len < sizeof(*xp) || len % sizeof(*xp) || xp->pr_version != XPRISON_VERSION) errx(1, "Kernel and userland out of sync"); |
