diff options
Diffstat (limited to 'ping.c')
| -rw-r--r-- | ping.c | 9 |
1 files changed, 6 insertions, 3 deletions
@@ -1,5 +1,5 @@ /* - * $Id: ping.c,v 1.8 2000/01/29 05:52:40 erik Exp $ + * $Id: ping.c,v 1.9 2000/01/29 06:29:32 erik Exp $ * Mini ping implementation for busybox * * Copyright (C) 1999 by Randolph Chung <tausq@debian.org> @@ -312,14 +312,17 @@ static void unpack(char *buf, int sz, struct sockaddr_in *from) static void ping(char *host) { - struct protoent *proto=NULL; + struct protoent *proto; struct hostent *h; char buf[MAXHOSTNAMELEN]; char packet[DEFDATALEN + MAXIPLEN + MAXICMPLEN]; int sockopt; proto = getprotobyname("icmp"); - if ((pingsock = socket(AF_INET, SOCK_RAW, (proto)? proto->p_proto : 1 )) < 0) { /* 1 == ICMP */ + /* if getprotobyname failed, just silently force + * proto->p_proto to have the correct value for "icmp" */ + if ((pingsock = socket(AF_INET, SOCK_RAW, + (proto ? proto->p_proto : 1))) < 0) { /* 1 == ICMP */ if (errno == EPERM) { fprintf(stderr, "ping: permission denied. (are you root?)\n"); } else { |