diff options
| -rw-r--r-- | pwait.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pwait.c b/pwait.c index 15b4904..2ed699c 100644 --- a/pwait.c +++ b/pwait.c @@ -187,6 +187,9 @@ usage: pids[m++] = pid; } + if (m == 0) + exit(1); + sk_nl = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_CONNECTOR); if (sk_nl == -1) { perror("socket sk_nl error"); |