diff options
Diffstat (limited to 'ping.c')
| -rw-r--r-- | ping.c | 86 |
1 files changed, 84 insertions, 2 deletions
@@ -1,6 +1,6 @@ /* vi: set sw=4 ts=4: */ /* - * $Id: ping.c,v 1.16 2000/06/07 20:38:15 proski Exp $ + * $Id: ping.c,v 1.17 2000/06/19 18:51:53 andersen Exp $ * Mini ping implementation for busybox * * Copyright (C) 1999 by Randolph Chung <tausq@debian.org> @@ -48,6 +48,88 @@ #include <stdlib.h> #include <errno.h> + +/* It turns out that libc5 doesn't have proper icmp support + * built into it header files, so we have to supplement it */ +#if __GNU_LIBRARY__ < 5 +typedef unsigned int socklen_t; + +#define ICMP_MINLEN 8 /* abs minimum */ + +struct icmp_ra_addr +{ + u_int32_t ira_addr; + u_int32_t ira_preference; +}; + + +struct icmp +{ + u_int8_t icmp_type; /* type of message, see below */ + u_int8_t icmp_code; /* type sub code */ + u_int16_t icmp_cksum; /* ones complement checksum of struct */ + union + { + u_char ih_pptr; /* ICMP_PARAMPROB */ + struct in_addr ih_gwaddr; /* gateway address */ + struct ih_idseq /* echo datagram */ + { + u_int16_t icd_id; + u_int16_t icd_seq; + } ih_idseq; + u_int32_t ih_void; + + /* ICMP_UNREACH_NEEDFRAG -- Path MTU Discovery (RFC1191) */ + struct ih_pmtu + { + u_int16_t ipm_void; + u_int16_t ipm_nextmtu; + } ih_pmtu; + + struct ih_rtradv + { + u_int8_t irt_num_addrs; + u_int8_t irt_wpa; + u_int16_t irt_lifetime; + } ih_rtradv; + } icmp_hun; +#define icmp_pptr icmp_hun.ih_pptr +#define icmp_gwaddr icmp_hun.ih_gwaddr +#define icmp_id icmp_hun.ih_idseq.icd_id +#define icmp_seq icmp_hun.ih_idseq.icd_seq +#define icmp_void icmp_hun.ih_void +#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void +#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu +#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs +#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa +#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime + union + { + struct + { + u_int32_t its_otime; + u_int32_t its_rtime; + u_int32_t its_ttime; + } id_ts; + struct + { + struct ip idi_ip; + /* options and then 64 bits of data */ + } id_ip; + struct icmp_ra_addr id_radv; + u_int32_t id_mask; + u_int8_t id_data[1]; + } icmp_dun; +#define icmp_otime icmp_dun.id_ts.its_otime +#define icmp_rtime icmp_dun.id_ts.its_rtime +#define icmp_ttime icmp_dun.id_ts.its_ttime +#define icmp_ip icmp_dun.id_ip.idi_ip +#define icmp_radv icmp_dun.id_radv +#define icmp_mask icmp_dun.id_mask +#define icmp_data icmp_dun.id_data +}; +#endif + #define DEFDATALEN 56 #define MAXIPLEN 60 #define MAXICMPLEN 76 @@ -477,7 +559,7 @@ extern int ping_main(int argc, char **argv) myid = getpid() & 0xFFFF; ping(*argv); - exit(TRUE); + return(TRUE); } #endif /* ! BB_SIMPLE_PING */ |