diff options
| -rw-r--r-- | usr.sbin/jail/jail.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/usr.sbin/jail/jail.c b/usr.sbin/jail/jail.c index 4580bac..e21fcc8 100644 --- a/usr.sbin/jail/jail.c +++ b/usr.sbin/jail/jail.c @@ -55,14 +55,15 @@ main(int argc, char **argv) struct passwd *pwd = NULL; struct in_addr in; gid_t groups[NGROUPS]; - int ch, i, iflag, Jflag, lflag, ngroups, uflag, Uflag; - char path[PATH_MAX], *username, *JidFile; + int ch, i, iflag, Jflag, lflag, ngroups, securelevel, uflag, Uflag; + char path[PATH_MAX], *ep, *username, *JidFile; static char *cleanenv; const char *shell, *p = NULL; - int securelevel = -1; + long ltmp; FILE *fp; iflag = Jflag = lflag = uflag = Uflag = 0; + securelevel = -1; username = JidFile = cleanenv = NULL; fp = NULL; @@ -76,7 +77,10 @@ main(int argc, char **argv) Jflag = 1; break; case 's': - securelevel = (int) strtol(optarg, NULL, 0); + ltmp = strtol(optarg, &ep, 0); + if (*ep || ep == optarg || ltmp > INT_MAX || !ltmp) + errx(1, "invalid securelevel: `%s'", optarg); + securelevel = ltmp; break; case 'u': username = optarg; |
