diff options
| -rw-r--r-- | networking/ping.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/networking/ping.c b/networking/ping.c index 8b70d9a..bd98a21 100644 --- a/networking/ping.c +++ b/networking/ping.c @@ -238,9 +238,10 @@ enum { struct globals { int pingsock; + int if_index; + char *opt_I; len_and_sockaddr *source_lsa; unsigned datalen; - int if_index; unsigned long ntransmitted, nreceived, nrepeats, pingcount; uint16_t myid; unsigned tmin, tmax; /* in us */ @@ -258,9 +259,10 @@ struct globals { }; #define G (*(struct globals*)&bb_common_bufsiz1) #define pingsock (G.pingsock ) +#define if_index (G.if_index ) #define source_lsa (G.source_lsa ) +#define opt_I (G.opt_I ) #define datalen (G.datalen ) -#define if_index (G.if_index ) #define ntransmitted (G.ntransmitted) #define nreceived (G.nreceived ) #define nrepeats (G.nrepeats ) @@ -537,6 +539,8 @@ static void ping4(len_and_sockaddr *lsa) bb_error_msg_and_die("can't set multicast source interface"); xbind(pingsock, &source_lsa->sa, source_lsa->len); } + if (opt_I) + setsockopt(pingsock, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(opt_I) + 1); /* enable broadcast pings */ setsockopt_broadcast(pingsock); @@ -584,6 +588,8 @@ static void ping6(len_and_sockaddr *lsa) /* untested whether "-I addr" really works for IPv6: */ if (source_lsa) xbind(pingsock, &source_lsa->sa, source_lsa->len); + if (opt_I) + setsockopt(pingsock, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(opt_I) + 1); #ifdef ICMP6_FILTER { @@ -680,23 +686,26 @@ int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int ping_main(int argc, char **argv) { len_and_sockaddr *lsa; - char *opt_c, *opt_s, *opt_I; + char *opt_c, *opt_s; USE_PING6(sa_family_t af = AF_UNSPEC;) INIT_G(); - datalen = DEFDATALEN; /* initialized here rather than in global scope to work around gcc bug */ + datalen = DEFDATALEN; /* exactly one argument needed, -v and -q don't mix */ opt_complementary = "=1:q--v:v--q"; getopt32(argv, OPT_STRING, &opt_c, &opt_s, &opt_I); - if (option_mask32 & OPT_c) pingcount = xatoul(opt_c); // -c - if (option_mask32 & OPT_s) datalen = xatou16(opt_s); // -s + if (option_mask32 & OPT_c) + pingcount = xatoul(opt_c); // -c + if (option_mask32 & OPT_s) + datalen = xatou16(opt_s); // -s if (option_mask32 & OPT_I) { // -I if_index = if_nametoindex(opt_I); if (!if_index) { /* TODO: I'm not sure it takes IPv6 unless in [XX:XX..] format */ source_lsa = xdotted2sockaddr(opt_I, 0); + opt_I = NULL; /* don't try to bind to device later */ } } myid = (uint16_t) getpid(); |