ping: add -w, -W support (James Simmons <jsimmons AT infradead.org>)
function old new delta print_stats_and_exit - 282 +282 sendping_tail 151 231 +80 packed_usage 23976 24054 +78 ping_main 401 412 +11 arm_ioctl 13 20 +7 pingstats 259 - -259 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 4/0 up/down: 458/-259) Total: 199 bytes
This commit is contained in:
Denis Vlasenko
parent
278a1c2264
commit
90c31b3d4b
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@ -2935,6 +2935,10 @@
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"\n -c CNT Send only CNT pings" \
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"\n -s SIZE Send SIZE data bytes in packets (default=56)" \
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"\n -I iface/IP Use interface or IP address as source" \
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"\n -W timeout Seconds to wait for the first response (default:10)" \
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"\n (after all -c CNT packets are sent)" \
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"\n -w deadline Seconds until ping exits (default:infinite)" \
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"\n (can exit earlier with -c CNT)" \
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"\n -q Quiet, only displays output at start" \
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"\n and when finished" \
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@ -224,15 +224,17 @@ int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
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/* full(er) version */
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#define OPT_STRING ("qvc:s:I:4" USE_PING6("6"))
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#define OPT_STRING ("qvc:s:w:W:I:4" USE_PING6("6"))
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enum {
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OPT_QUIET = 1 << 0,
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OPT_VERBOSE = 1 << 1,
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OPT_c = 1 << 2,
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OPT_s = 1 << 3,
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OPT_I = 1 << 4,
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OPT_IPV4 = 1 << 5,
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OPT_IPV6 = (1 << 6) * ENABLE_PING6,
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OPT_w = 1 << 4,
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OPT_W = 1 << 5,
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OPT_I = 1 << 6,
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OPT_IPV4 = 1 << 7,
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OPT_IPV6 = (1 << 8) * ENABLE_PING6,
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};
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@ -246,6 +248,9 @@ struct globals {
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uint16_t myid;
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unsigned tmin, tmax; /* in us */
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unsigned long long tsum; /* in us, sum of all times */
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unsigned deadline;
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unsigned timeout;
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unsigned total_secs;
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const char *hostname;
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const char *dotted;
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union {
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@ -271,6 +276,9 @@ struct globals {
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#define tmin (G.tmin )
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#define tmax (G.tmax )
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#define tsum (G.tsum )
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#define deadline (G.deadline )
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#define timeout (G.timeout )
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#define total_secs (G.total_secs )
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#define hostname (G.hostname )
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#define dotted (G.dotted )
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#define pingaddr (G.pingaddr )
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@ -280,6 +288,8 @@ void BUG_ping_globals_too_big(void);
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if (sizeof(G) > COMMON_BUFSIZE) \
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BUG_ping_globals_too_big(); \
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pingsock = -1; \
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datalen = DEFDATALEN; \
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timeout = MAXWAIT; \
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tmin = UINT_MAX; \
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} while (0)
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@ -292,7 +302,8 @@ void BUG_ping_globals_too_big(void);
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/**************************************************************************/
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static void pingstats(int junk ATTRIBUTE_UNUSED)
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static void print_stats_and_exit(int junk) ATTRIBUTE_NORETURN;
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static void print_stats_and_exit(int junk ATTRIBUTE_UNUSED)
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{
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signal(SIGINT, SIG_IGN);
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@ -311,7 +322,8 @@ static void pingstats(int junk ATTRIBUTE_UNUSED)
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tavg / 1000, tavg % 1000,
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tmax / 1000, tmax % 1000);
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}
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exit(nreceived == 0); /* (nreceived == 0) is true (1) -- 'failure' */
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/* if condition is true, exit with 1 -- 'failure' */
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exit(nreceived == 0 || (deadline && nreceived < pingcount));
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}
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static void sendping_tail(void (*sp)(int), const void *pkt, int size_pkt)
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@ -327,13 +339,30 @@ static void sendping_tail(void (*sp)(int), const void *pkt, int size_pkt)
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if (sz != size_pkt)
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bb_error_msg_and_die(bb_msg_write_error);
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signal(SIGALRM, sp);
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if (pingcount == 0 || ntransmitted < pingcount) { /* schedule next in 1s */
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if (pingcount == 0 || deadline || ntransmitted < pingcount) {
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/* Didn't send all pings yet - schedule next in 1s */
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signal(SIGALRM, sp);
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if (deadline) {
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total_secs += PINGINTERVAL;
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if (total_secs >= deadline)
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signal(SIGALRM, print_stats_and_exit);
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}
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alarm(PINGINTERVAL);
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} else { /* done, wait for the last ping to come back */
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/* todo, don't necessarily need to wait so long... */
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signal(SIGALRM, pingstats);
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alarm(MAXWAIT);
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} else { /* -c NN, and all NN are sent (and no deadline) */
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/* Wait for the last ping to come back.
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* -W timeout: wait for a response in seconds.
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* Affects only timeout in absense of any responses,
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* otherwise ping waits for two RTTs. */
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unsigned expire = timeout;
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if (nreceived) {
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/* approx. 2*tmax, in seconds (2 RTT) */
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expire = tmax / (512*1024);
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if (expire == 0)
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expire = 1;
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}
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signal(SIGALRM, print_stats_and_exit);
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alarm(expire);
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}
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}
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@ -549,7 +578,7 @@ static void ping4(len_and_sockaddr *lsa)
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sockopt = 48 * 1024; /* explain why 48k? */
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setsockopt(pingsock, SOL_SOCKET, SO_RCVBUF, &sockopt, sizeof(sockopt));
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signal(SIGINT, pingstats);
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signal(SIGINT, print_stats_and_exit);
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/* start the ping's going ... */
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sendping4(0);
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@ -568,7 +597,7 @@ static void ping4(len_and_sockaddr *lsa)
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continue;
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}
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unpack4(packet, c, &from);
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if (pingcount > 0 && nreceived >= pingcount)
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if (pingcount && nreceived >= pingcount)
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break;
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}
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}
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@ -624,7 +653,7 @@ static void ping6(len_and_sockaddr *lsa)
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if (if_index)
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pingaddr.sin6.sin6_scope_id = if_index;
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signal(SIGINT, pingstats);
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signal(SIGINT, print_stats_and_exit);
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/* start the ping's going ... */
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sendping6(0);
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@ -659,7 +688,7 @@ static void ping6(len_and_sockaddr *lsa)
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}
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}
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unpack6(packet, c, /*&from,*/ hoplimit);
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if (pingcount > 0 && nreceived >= pingcount)
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if (pingcount && nreceived >= pingcount)
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break;
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}
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}
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@ -691,11 +720,9 @@ int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
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INIT_G();
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datalen = DEFDATALEN;
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/* exactly one argument needed, -v and -q don't mix */
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opt_complementary = "=1:q--v:v--q";
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getopt32(argv, OPT_STRING, &opt_c, &opt_s, &opt_I);
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/* exactly one argument needed; -v and -q don't mix; -w NUM, -W NUM */
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opt_complementary = "=1:q--v:v--q:w+:W+";
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getopt32(argv, OPT_STRING, &opt_c, &opt_s, &deadline, &timeout, &opt_I);
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if (option_mask32 & OPT_c)
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pingcount = xatoul(opt_c); // -c
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if (option_mask32 & OPT_s)
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@ -726,8 +753,8 @@ int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
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dotted = xmalloc_sockaddr2dotted_noport(&lsa->u.sa);
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ping(lsa);
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pingstats(0);
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return EXIT_SUCCESS;
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print_stats_and_exit(0);
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/*return EXIT_SUCCESS;*/
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}
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#endif /* FEATURE_FANCY_PING */
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