auto import from //depot/cupcake/@135843

3 files changed, 0 insertions, 2278 deletions

diff --git a/Android.mk b/Android.mk
deleted file mode 100644
index c1c351d..0000000
--- a/Android.mk
+++ /dev/null
@@ -1,11 +0,0 @@
-ifneq ($(TARGET_SIMULATOR),true)
-
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES:= ping.c
-LOCAL_MODULE := ping
-LOCAL_STATIC_LIBRARIES := libcutils libc
-include $(BUILD_EXECUTABLE)
-
-endif  # TARGET_SIMULATOR != true
diff --git a/ping.c b/ping.c
deleted file mode 100644
index 2afca98..0000000
--- a/ping.c
+++ /dev/null
@@ -1,2068 +0,0 @@
-/*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Mike Muuss.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-char copyright[] =
-"@(#) Copyright (c) 1989 The Regents of the University of California.\n\
- All rights reserved.\n";
-#endif /* not lint */
-
-/*
- *			P I N G . C
- *
- * Using the InterNet Control Message Protocol (ICMP) "ECHO" facility,
- * measure round-trip-delays and packet loss across network paths.
- *
- * Author -
- *	Mike Muuss
- *	U. S. Army Ballistic Research Laboratory
- *	December, 1983
- *
- * Status -
- *	Public Domain.  Distribution Unlimited.
- * Bugs -
- *	More statistics could always be gathered.
- *	This program has to run SUID to ROOT to access the ICMP socket.
- */
-
-#include "ping_common.h"
-
-#include <netinet/ip.h>
-#include <linux/icmp.h>
-#include <sched.h>
-
-#define bzero(b,sz) memset(b, 0, sz)
-
-/* PING COMMON */
-
-int options;
-
-int sndbuf;
-int ttl;
-int rtt;
-int rtt_addend;
-__u16 acked;
-
-int mx_dup_ck = MAX_DUP_CHK;
-char rcvd_tbl[MAX_DUP_CHK / 8];
-
-
-/* counters */
-long npackets;			/* max packets to transmit */
-long nreceived;			/* # of packets we got back */
-long nrepeats;			/* number of duplicates */
-long ntransmitted;		/* sequence # for outbound packets = #sent */
-long nchecksum;			/* replies with bad checksum */
-long nerrors;			/* icmp errors */
-int interval = 1000;		/* interval between packets (msec) */
-int preload;
-int deadline = 0;		/* time to die */
-int lingertime = MAXWAIT*1000;
-struct timeval start_time, cur_time;
-volatile int exiting;
-volatile int status_snapshot;
-int confirm = 0;
-
-/* Stupid workarounds for bugs/missing functionality in older linuces.
- * confirm_flag fixes refusing service of kernels without MSG_CONFIRM.
- * i.e. for linux-2.2 */
-int confirm_flag = MSG_CONFIRM;
-/* And this is workaround for bug in IP_RECVERR on raw sockets which is present
- * in linux-2.2.[0-19], linux-2.4.[0-7] */
-int working_recverr;
-
-/* timing */
-int timing;			/* flag to do timing */
-long tmin = LONG_MAX;		/* minimum round trip time */
-long tmax;			/* maximum round trip time */
-/* Message for rpm maintainers: have _shame_. If you want
- * to fix something send the patch to me for sanity checking.
- * "sparcfix" patch is a complete non-sense, apparenly the person
- * prepared it was stoned.
- */
-long long tsum;			/* sum of all times, for doing average */
-long long tsum2;
-int  pipesize = -1;
-
-int datalen = DEFDATALEN;
-
-char *hostname;
-int uid;
-int ident;			/* process id to identify our packets */
-
-static int screen_width = INT_MAX;
-
-/* Fills all the outpack, excluding ICMP header, but _including_
- * timestamp area with supplied pattern.
- */
-static void fill(char *patp)
-{
-	int ii, jj, kk;
-	int pat[16];
-	char *cp;
-	char *bp = outpack+8;
-
-	for (cp = patp; *cp; cp++) {
-		if (!isxdigit(*cp)) {
-			fprintf(stderr,
-				"ping: patterns must be specified as hex digits.\n");
-			exit(2);
-		}
-	}
-	ii = sscanf(patp,
-	    "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x",
-	    &pat[0], &pat[1], &pat[2], &pat[3], &pat[4], &pat[5], &pat[6],
-	    &pat[7], &pat[8], &pat[9], &pat[10], &pat[11], &pat[12],
-	    &pat[13], &pat[14], &pat[15]);
-
-	if (ii > 0) {
-		for (kk = 0; kk <= maxpacket - (8 + ii); kk += ii)
-			for (jj = 0; jj < ii; ++jj)
-				bp[jj + kk] = pat[jj];
-	}
-	if (!(options & F_QUIET)) {
-		printf("PATTERN: 0x");
-		for (jj = 0; jj < ii; ++jj)
-			printf("%02x", bp[jj] & 0xFF);
-		printf("\n");
-	}
-}
-
-void common_options(int ch)
-{
-	switch(ch) {
-	case 'a':
-		options |= F_AUDIBLE;
-		break;
-	case 'A':
-		options |= F_ADAPTIVE;
-		break;
-	case 'c':
-		npackets = atoi(optarg);
-		if (npackets <= 0) {
-			fprintf(stderr, "ping: bad number of packets to transmit.\n");
-			exit(2);
-		}
-		break;
-	case 'd':
-		options |= F_SO_DEBUG;
-		break;
-	case 'f':
-		options |= F_FLOOD;
-		//setbuf(stdout, (char *)NULL);
-		break;
-	case 'i':		/* wait between sending packets */
-	{
-		if (strchr(optarg, '.')) {
-			float t;
-			if (sscanf(optarg, "%f", &t) != 1) {
-				fprintf(stderr, "ping: bad timing interval.\n");
-				exit(2);
-			}
-			interval = (int)(t*1000);
-		} else if (sscanf(optarg, "%d", &interval) == 1) {
-			interval *= 1000;
-		} else {
-			fprintf(stderr, "ping: bad timing interval.\n");
-			exit(2);
-		}
-
-		if (interval < 0) {
-			fprintf(stderr, "ping: bad timing interval.\n");
-			exit(2);
-		}
-		options |= F_INTERVAL;
-		break;
-	}
-	case 'w':
-		deadline = atoi(optarg);
-		if (deadline < 0) {
-			fprintf(stderr, "ping: bad wait time.\n");
-			exit(2);
-		}
-		break;
-	case 'l':
-		preload = atoi(optarg);
-		if (preload <= 0) {
-			fprintf(stderr, "ping: bad preload value, should be 1..%d\n", mx_dup_ck);
-			exit(2);
-		}
-		if (preload > mx_dup_ck)
-			preload = mx_dup_ck;
-		if (uid && preload > 3) {
-			fprintf(stderr, "ping: cannot set preload to value > 3\n");
-			exit(2);
-		}
-		break;
-	case 'S':
-		sndbuf = atoi(optarg);
-		if (sndbuf <= 0) {
-			fprintf(stderr, "ping: bad sndbuf value.\n");
-			exit(2);
-		}
-		break;
-	case 'n':
-		options |= F_NUMERIC;
-		break;
-	case 'p':		/* fill buffer with user pattern */
-		options |= F_PINGFILLED;
-		fill(optarg);
-		break;
-	case 'q':
-		options |= F_QUIET;
-		break;
-	case 'r':
-		options |= F_SO_DONTROUTE;
-		break;
-	case 's':		/* size of packet to send */
-		datalen = atoi(optarg);
-		if (datalen < 0) {
-			fprintf(stderr, "ping: illegal negative packet size %d.\n", datalen);
-			exit(2);
-		}
-		break;
-	case 'v':
-		options |= F_VERBOSE;
-		break;
-	case 'L':
-		options |= F_NOLOOP;
-		break;
-	case 't':
-		options |= F_TTL;
-		ttl = atoi(optarg);
-		if (ttl < 0 || ttl > 255) {
-			fprintf(stderr, "ping: ttl %u out of range\n", ttl);
-			exit(2);
-		}
-		break;
-	case 'U':
-		options |= F_LATENCY;
-		break;
-	case 'B':
-		options |= F_STRICTSOURCE;
-		break;
-	case 'W':
-		lingertime = atoi(optarg);
-		if (lingertime < 0 || lingertime > INT_MAX/1000000) {
-			fprintf(stderr, "ping: bad linger time.\n");
-			exit(2);
-		}
-		lingertime *= 1000;
-		break;
-	case 'V':
-		printf("ping utility, iputils-ss\n");
-		exit(0);
-	default:
-		abort();
-	}
-}
-
-
-static void sigexit(int signo)
-{
-	exiting = 1;
-}
-
-static void sigstatus(int signo)
-{
-	status_snapshot = 1;
-}
-
-
-int __schedule_exit(int next)
-{
-	static unsigned long waittime;
-	struct itimerval it;
-
-	if (waittime)
-		return next;
-
-	if (nreceived) {
-		waittime = 2 * tmax;
-		if (waittime < 1000*interval)
-			waittime = 1000*interval;
-	} else
-		waittime = lingertime*1000;
-
-	if (next < 0 || next < waittime/1000)
-		next = waittime/1000;
-
-	it.it_interval.tv_sec = 0;
-	it.it_interval.tv_usec = 0;
-	it.it_value.tv_sec = waittime/1000000;
-	it.it_value.tv_usec = waittime%1000000;
-	setitimer(ITIMER_REAL, &it, NULL);
-	return next;
-}
-
-static inline void update_interval(void)
-{
-	int est = rtt ? rtt/8 : interval*1000; 
-
-	interval = (est+rtt_addend+500)/1000;
-	if (uid && interval < MINUSERINTERVAL)
-		interval = MINUSERINTERVAL;
-}
-
-/*
- * pinger --
- * 	Compose and transmit an ICMP ECHO REQUEST packet.  The IP packet
- * will be added on by the kernel.  The ID field is our UNIX process ID,
- * and the sequence number is an ascending integer.  The first 8 bytes
- * of the data portion are used to hold a UNIX "timeval" struct in VAX
- * byte-order, to compute the round-trip time.
- */
-int pinger(void)
-{
-	static int oom_count;
-	static int tokens;
-	int i;
-
-	/* Have we already sent enough? If we have, return an arbitrary positive value. */ 
-	if (exiting || (npackets && ntransmitted >= npackets && !deadline))
-		return 1000;
-
-	/* Check that packets < rate*time + preload */
-	if (cur_time.tv_sec == 0) {
-		gettimeofday(&cur_time, NULL);
-		tokens = interval*(preload-1);
-	} else {
-		long ntokens;
-		struct timeval tv;
-
-		gettimeofday(&tv, NULL);
-		ntokens = (tv.tv_sec - cur_time.tv_sec)*1000 +
-			(tv.tv_usec-cur_time.tv_usec)/1000;
-		if (!interval) {
-			/* Case of unlimited flood is special;
-			 * if we see no reply, they are limited to 100pps */
-			if (ntokens < MININTERVAL && in_flight() >= preload)
-				return MININTERVAL-ntokens;
-		}
-		ntokens += tokens;
-		if (ntokens > interval*preload)
-			ntokens = interval*preload;
-		if (ntokens < interval)
-			return interval - ntokens;
-
-		cur_time = tv;
-		tokens = ntokens - interval;
-	}
-
-resend:
-	i = send_probe();
-
-	if (i == 0) {
-		oom_count = 0;
-		advance_ntransmitted();
-		if (!(options & F_QUIET) && (options & F_FLOOD)) {
-			/* Very silly, but without this output with
-			 * high preload or pipe size is very confusing. */
-			if ((preload < screen_width && pipesize < screen_width) ||
-			    in_flight() < screen_width)
-				write(STDOUT_FILENO, ".", 1);
-		}
-		return interval - tokens;
-	}
-
-	/* And handle various errors... */
-	if (i > 0) {
-		/* Apparently, it is some fatal bug. */
-		abort();
-	} else if (errno == ENOBUFS || errno == ENOMEM) {
-		int nores_interval;
-
-		/* Device queue overflow or OOM. Packet is not sent. */
-		tokens = 0;
-		/* Slowdown. This works only in adaptive mode (option -A) */
-		rtt_addend += (rtt < 8*50000 ? rtt/8 : 50000);
-		if (options&F_ADAPTIVE)
-			update_interval();
-		nores_interval = SCHINT(interval/2);
-		if (nores_interval > 500)
-			nores_interval = 500;
-		oom_count++;
-		if (oom_count*nores_interval < lingertime)
-			return nores_interval;
-		i = 0;
-		/* Fall to hard error. It is to avoid complete deadlock
-		 * on stuck output device even when dealine was not requested.
-		 * Expected timings are screwed up in any case, but we will
-		 * exit some day. :-) */
-	} else if (errno == EAGAIN) {
-		/* Socket buffer is full. */
-		tokens += interval;
-		return MININTERVAL;
-	} else {
-		if ((i=receive_error_msg()) > 0) {
-			/* An ICMP error arrived. */
-			tokens += interval;
-			return MININTERVAL;
-		}
-		/* Compatibility with old linuces. */
-		if (i == 0 && confirm_flag && errno == EINVAL) {
-			confirm_flag = 0;
-			errno = 0;
-		}
-		if (!errno)
-			goto resend;
-	}
-
-	/* Hard local error. Pretend we sent packet. */
-	advance_ntransmitted();
-
-	if (i == 0 && !(options & F_QUIET)) {
-		if (options & F_FLOOD)
-			write(STDOUT_FILENO, "E", 1);
-		else
-			perror("ping: sendmsg");
-	}
-	tokens = 0;
-	return SCHINT(interval);
-}
-
-/* Set socket buffers, "alloc" is an estimate of memory taken by single packet. */
-
-void sock_setbufs(int icmp_sock, int alloc)
-{
-	int rcvbuf, hold;
-	int tmplen = sizeof(hold);
-
-	if (!sndbuf)
-		sndbuf = alloc;
-	setsockopt(icmp_sock, SOL_SOCKET, SO_SNDBUF, (char *)&sndbuf, sizeof(sndbuf));
-
-	rcvbuf = hold = alloc * preload;
-	if (hold < 65536)
-		hold = 65536;
-	setsockopt(icmp_sock, SOL_SOCKET, SO_RCVBUF, (char *)&hold, sizeof(hold));
-	if (getsockopt(icmp_sock, SOL_SOCKET, SO_RCVBUF, (char *)&hold, &tmplen) == 0) {
-		if (hold < rcvbuf)
-			fprintf(stderr, "WARNING: probably, rcvbuf is not enough to hold preload.\n");
-	}
-}
-
-/* Protocol independent setup and parameter checks. */
-
-void setup(int icmp_sock)
-{
-	int hold;
-	struct timeval tv;
-
-	if ((options & F_FLOOD) && !(options & F_INTERVAL))
-		interval = 0;
-
-	if (uid && interval < MINUSERINTERVAL) {
-		fprintf(stderr, "ping: cannot flood; minimal interval, allowed for user, is %dms\n", MINUSERINTERVAL);
-		exit(2);
-	}
-
-	if (interval >= INT_MAX/preload) {
-		fprintf(stderr, "ping: illegal preload and/or interval\n");
-		exit(2);
-	}
-
-	hold = 1;
-	if (options & F_SO_DEBUG)
-		setsockopt(icmp_sock, SOL_SOCKET, SO_DEBUG, (char *)&hold, sizeof(hold));
-	if (options & F_SO_DONTROUTE)
-		setsockopt(icmp_sock, SOL_SOCKET, SO_DONTROUTE, (char *)&hold, sizeof(hold));
-
-#ifdef SO_TIMESTAMP
-	if (!(options&F_LATENCY)) {
-		int on = 1;
-		if (setsockopt(icmp_sock, SOL_SOCKET, SO_TIMESTAMP, &on, sizeof(on)))
-			fprintf(stderr, "Warning: no SO_TIMESTAMP support, falling back to SIOCGSTAMP\n");
-	}
-#endif
-
-	/* Set some SNDTIMEO to prevent blocking forever
-	 * on sends, when device is too slow or stalls. Just put limit
-	 * of one second, or "interval", if it is less.
-	 */
-	tv.tv_sec = 1;
-	tv.tv_usec = 0;
-	if (interval < 1000) {
-		tv.tv_sec = 0;
-		tv.tv_usec = 1000 * SCHINT(interval);
-	}
-	setsockopt(icmp_sock, SOL_SOCKET, SO_SNDTIMEO, (char*)&tv, sizeof(tv));
-
-	/* Set RCVTIMEO to "interval". Note, it is just an optimization
-	 * allowing to avoid redundant poll(). */
-	tv.tv_sec = SCHINT(interval)/1000;
-	tv.tv_usec = 1000*(SCHINT(interval)%1000);
-	if (setsockopt(icmp_sock, SOL_SOCKET, SO_RCVTIMEO, (char*)&tv, sizeof(tv)))
-		options |= F_FLOOD_POLL;
-
-	if (!(options & F_PINGFILLED)) {
-		int i;
-		char *p = outpack+8;
-
-		/* Do not forget about case of small datalen,
-		 * fill timestamp area too!
-		 */
-		for (i = 0; i < datalen; ++i)
-			*p++ = i;
-	}
-
-	ident = getpid() & 0xFFFF;
-
-	set_signal(SIGINT, sigexit);
-	set_signal(SIGALRM, sigexit);
-	set_signal(SIGQUIT, sigstatus);
-
-	gettimeofday(&start_time, NULL);
-
-	if (deadline) {
-		struct itimerval it;
-
-		it.it_interval.tv_sec = 0;
-		it.it_interval.tv_usec = 0;
-		it.it_value.tv_sec = deadline;
-		it.it_value.tv_usec = 0;
-		setitimer(ITIMER_REAL, &it, NULL);
-	}
-
-#if 0
-	if (isatty(STDOUT_FILENO)) {
-		struct winsize w;
-
-		if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) != -1) {
-			if (w.ws_col > 0)
-				screen_width = w.ws_col;
-		}
-	}
-#endif
-}
-
-void main_loop(int icmp_sock, __u8 *packet, int packlen)
-{
-	char addrbuf[128];
-	char ans_data[4096];
-	struct iovec iov;
-	struct msghdr msg;
-	struct cmsghdr *c;
-	int cc;
-	int next;
-	int polling;
-
-	iov.iov_base = (char *)packet;
-
-	for (;;) {
-		/* Check exit conditions. */
-		if (exiting)
-			break;
-		if (npackets && nreceived + nerrors >= npackets)
-			break;
-		if (deadline && nerrors)
-			break;
-		/* Check for and do special actions. */
-		if (status_snapshot)
-			status();
-
-		/* Send probes scheduled to this time. */
-		do {
-			next = pinger();
-			next = schedule_exit(next);
-		} while (next <= 0);
-
-		/* "next" is time to send next probe, if positive.
-		 * If next<=0 send now or as soon as possible. */
-
-		/* Technical part. Looks wicked. Could be dropped,
-		 * if everyone used the newest kernel. :-) 
-		 * Its purpose is:
-		 * 1. Provide intervals less than resolution of scheduler.
-		 *    Solution: spinning.
-		 * 2. Avoid use of poll(), when recvmsg() can provide
-		 *    timed waiting (SO_RCVTIMEO). */
-		polling = 0;
-		if ((options & (F_ADAPTIVE|F_FLOOD_POLL)) || next<SCHINT(interval)) {
-			int recv_expected = in_flight();
-
-			/* If we are here, recvmsg() is unable to wait for
-			 * required timeout. */ 
-			if (1000*next <= 1000000/(int)HZ) {
-				/* Very short timeout... So, if we wait for
-				 * something, we sleep for MININTERVAL.
-				 * Otherwise, spin! */
-				if (recv_expected) {
-					next = MININTERVAL;
-				} else {
-					next = 0;
-					/* When spinning, no reasons to poll.
-					 * Use nonblocking recvmsg() instead. */
-					polling = MSG_DONTWAIT;
-					/* But yield yet. */
-					sched_yield();
-				}
-			}
-
-			if (!polling &&
-			    ((options & (F_ADAPTIVE|F_FLOOD_POLL)) || interval)) {
-				struct pollfd pset;
-				pset.fd = icmp_sock;
-				pset.events = POLLIN|POLLERR;
-				pset.revents = 0;
-				if (poll(&pset, 1, next) < 1 ||
-				    !(pset.revents&(POLLIN|POLLERR)))
-					continue;
-				polling = MSG_DONTWAIT;
-			}
-		}
-
-		for (;;) {
-			struct timeval *recv_timep = NULL;
-			struct timeval recv_time;
-			int not_ours = 0; /* Raw socket can receive messages
-					   * destined to other running pings. */
-
-			iov.iov_len = packlen;
-			msg.msg_name = addrbuf;
-			msg.msg_namelen = sizeof(addrbuf);
-			msg.msg_iov = &iov;
-			msg.msg_iovlen = 1;
-			msg.msg_control = ans_data;
-			msg.msg_controllen = sizeof(ans_data);
-
-			cc = recvmsg(icmp_sock, &msg, polling);
-			polling = MSG_DONTWAIT;
-
-			if (cc < 0) {
-				if (errno == EAGAIN || errno == EINTR)
-					break;
-				if (!receive_error_msg()) {
-					if (errno) {
-						perror("ping: recvmsg");
-						break;
-					}
-					not_ours = 1;
-				}
-			} else {
-
-#ifdef SO_TIMESTAMP
-				for (c = CMSG_FIRSTHDR(&msg); c; c = CMSG_NXTHDR(&msg, c)) {
-					if (c->cmsg_level != SOL_SOCKET ||
-					    c->cmsg_type != SO_TIMESTAMP)
-						continue;
-					if (c->cmsg_len < CMSG_LEN(sizeof(struct timeval)))
-						continue;
-					recv_timep = (struct timeval*)CMSG_DATA(c);
-				}
-#endif
-
-				if ((options&F_LATENCY) || recv_timep == NULL) {
-					if ((options&F_LATENCY) ||
-					    ioctl(icmp_sock, SIOCGSTAMP, &recv_time))
-						gettimeofday(&recv_time, NULL);
-					recv_timep = &recv_time;
-				}
-
-				not_ours = parse_reply(&msg, cc, addrbuf, recv_timep);
-			}
-
-			/* See? ... someone runs another ping on this host. */ 
-			if (not_ours)
-				install_filter();
-
-			/* If nothing is in flight, "break" returns us to pinger. */
-			if (in_flight() == 0)
-				break;
-
-			/* Otherwise, try to recvmsg() again. recvmsg()
-			 * is nonblocking after the first iteration, so that
-			 * if nothing is queued, it will receive EAGAIN
-			 * and return to pinger. */
-		}
-	}
-	finish();
-}
-
-int gather_statistics(__u8 *ptr, int cc, __u16 seq, int hops,
-		      int csfailed, struct timeval *tv, char *from)
-{
-	int dupflag = 0;
-	long triptime = 0;
-
-	++nreceived;
-	if (!csfailed)
-		acknowledge(seq);
-
-	if (timing && cc >= 8+sizeof(struct timeval)) {
-		struct timeval tmp_tv;
-		memcpy(&tmp_tv, ptr, sizeof(tmp_tv));
-
-restamp:
-		tvsub(tv, &tmp_tv);
-		triptime = tv->tv_sec * 1000000 + tv->tv_usec;
-		if (triptime < 0) {
-			fprintf(stderr, "Warning: time of day goes back (%ldus), taking countermeasures.\n", triptime);
-			triptime = 0;
-			if (!(options & F_LATENCY)) {
-				gettimeofday(tv, NULL);
-				options |= F_LATENCY;
-				goto restamp;
-			}
-		}
-		if (!csfailed) {
-			tsum += triptime;
-			tsum2 += (long long)triptime * (long long)triptime;
-			if (triptime < tmin)
-				tmin = triptime;
-			if (triptime > tmax)
-				tmax = triptime;
-			if (!rtt)
-				rtt = triptime*8;
-			else
-				rtt += triptime-rtt/8;
-			if (options&F_ADAPTIVE)
-				update_interval();
-		}
-	}
-
-	if (csfailed) {
-		++nchecksum;
-		--nreceived;
-	} else if (TST(seq % mx_dup_ck)) {
-		++nrepeats;
-		--nreceived;
-		dupflag = 1;
-	} else {
-		SET(seq % mx_dup_ck);
-		dupflag = 0;
-	}
-	confirm = confirm_flag;
-
-	if (options & F_QUIET)
-		return 1;
-
-	if (options & F_FLOOD) {
-		if (!csfailed)
-			write(STDOUT_FILENO, "\b \b", 3);
-		else
-			write(STDOUT_FILENO, "\bC", 1);
-	} else {
-		int i;
-		__u8 *cp, *dp;
-		printf("%d bytes from %s: icmp_seq=%u", cc, from, seq);
-
-		if (hops >= 0)
-			printf(" ttl=%d", hops);
-
-		if (cc < datalen+8) {
-			printf(" (truncated)\n");
-			return 1;
-		}
-		if (timing) {
-			if (triptime >= 100000)
-				printf(" time=%ld ms", triptime/1000);
-			else if (triptime >= 10000)
-				printf(" time=%ld.%01ld ms", triptime/1000,
-				       (triptime%1000)/100);
-			else if (triptime >= 1000)
-				printf(" time=%ld.%02ld ms", triptime/1000,
-				       (triptime%1000)/10);
-			else
-				printf(" time=%ld.%03ld ms", triptime/1000,
-				       triptime%1000);
-		}
-		if (dupflag)
-			printf(" (DUP!)");
-		if (csfailed)
-			printf(" (BAD CHECKSUM!)");
-
-		/* check the data */
-		cp = ((u_char*)ptr) + sizeof(struct timeval);
-		dp = &outpack[8 + sizeof(struct timeval)];
-		for (i = sizeof(struct timeval); i < datalen; ++i, ++cp, ++dp) {
-			if (*cp != *dp) {
-				printf("\nwrong data byte #%d should be 0x%x but was 0x%x",
-				       i, *dp, *cp);
-				cp = (u_char*)ptr + sizeof(struct timeval);
-				for (i = sizeof(struct timeval); i < datalen; ++i, ++cp) {
-					if ((i % 32) == sizeof(struct timeval))
-						printf("\n#%d\t", i);
-					printf("%x ", *cp);
-				}
-				break;
-			}
-		}
-	}
-	return 0;
-}
-
-static long llsqrt(long long a)
-{
-	long long prev = ~((long long)1 << 63);
-	long long x = a;
-
-	if (x > 0) {
-		while (x < prev) {
-			prev = x;
-			x = (x+(a/x))/2;
-		}
-	}
-
-	return (long)x;
-}
-
-/*
- * finish --
- *	Print out statistics, and give up.
- */
-void finish(void)
-{
-	struct timeval tv = cur_time;
-
-	tvsub(&tv, &start_time);
-
-	putchar('\n');
-	fflush(stdout);
-	printf("--- %s ping statistics ---\n", hostname);
-	printf("%ld packets transmitted, ", ntransmitted);
-	printf("%ld received", nreceived);
-	if (nrepeats)
-		printf(", +%ld duplicates", nrepeats);
-	if (nchecksum)
-		printf(", +%ld corrupted", nchecksum);
-	if (nerrors)
-		printf(", +%ld errors", nerrors);
-	if (ntransmitted) {
-		printf(", %d%% packet loss",
-		       (int) ((((long long)(ntransmitted - nreceived)) * 100) /
-			      ntransmitted));
-		printf(", time %ldms", 1000*tv.tv_sec+tv.tv_usec/1000);
-	}
-	putchar('\n');
-
-	if (nreceived && timing) {
-		long tmdev;
-
-		tsum /= nreceived + nrepeats;
-		tsum2 /= nreceived + nrepeats;
-		tmdev = llsqrt(tsum2 - tsum * tsum);
-
-		printf("rtt min/avg/max/mdev = %ld.%03ld/%lu.%03ld/%ld.%03ld/%ld.%03ld ms",
-		       tmin/1000, tmin%1000,
-		       (unsigned long)(tsum/1000), (long)(tsum%1000),
-		       tmax/1000, tmax%1000,
-		       tmdev/1000, tmdev%1000
-		       );
-	}
-	if (pipesize > 1)
-		printf(", pipe %d", pipesize);
-	if (ntransmitted > 1 && (!interval || (options&(F_FLOOD|F_ADAPTIVE)))) {
-		int ipg = (1000000*(long long)tv.tv_sec+tv.tv_usec)/(ntransmitted-1);
-		printf(", ipg/ewma %d.%03d/%d.%03d ms",
-		       ipg/1000, ipg%1000, rtt/8000, (rtt/8)%1000);
-	}
-	putchar('\n');
-	exit(!nreceived || (deadline && nreceived < npackets));
-}
-
-
-void status(void)
-{
-	int loss = 0;
-	long tavg = 0;
-
-	status_snapshot = 0;
-
-	if (ntransmitted)
-		loss = (((long long)(ntransmitted - nreceived)) * 100) / ntransmitted;
-
-	fprintf(stderr, "\r%ld/%ld packets, %d%% loss", ntransmitted, nreceived, loss);
-
-	if (nreceived && timing) {
-		tavg = tsum / (nreceived + nrepeats);
-
-		fprintf(stderr, ", min/avg/ewma/max = %ld.%03ld/%lu.%03ld/%d.%03d/%ld.%03ld ms",
-		       tmin/1000, tmin%1000,
-		       tavg/1000, tavg%1000,
-		       rtt/8000, (rtt/8)%1000,
-		       tmax/1000, tmax%1000
-		       );
-	}
-	fprintf(stderr, "\n");
-}
-
-/* PING COMMON */
-
-#define	MAXIPLEN	60
-#define	MAXICMPLEN	76
-#define	NROUTES		9		/* number of record route slots */
-#define TOS_MAX		255		/* 8-bit TOS field */
-
-
-static int ts_type;
-static int nroute = 0;
-static __u32 route[10];
-
-
-
-struct sockaddr_in whereto;	/* who to ping */
-int optlen = 0;
-int settos = 0;			/* Set TOS, Precendence or other QOS options */
-int icmp_sock;			/* socket file descriptor */
-u_char outpack[0x10000];
-int maxpacket = sizeof(outpack);
-
-static int broadcast_pings = 0;
-
-static char *pr_addr(__u32);
-static void pr_options(unsigned char * cp, int hlen);
-static void pr_iph(struct iphdr *ip);
-static void usage(void) __attribute__((noreturn));
-static u_short in_cksum(const u_short *addr, int len, u_short salt);
-static void pr_icmph(__u8 type, __u8 code, __u32 info, struct icmphdr *icp);
-static int parsetos(char *str);
-
-static struct {
-	struct cmsghdr cm;
-	struct in_pktinfo ipi;
-} cmsg = { {sizeof(struct cmsghdr) + sizeof(struct in_pktinfo), SOL_IP, IP_PKTINFO},
-	   {0, }};
-int cmsg_len;
-
-struct sockaddr_in source;
-char *device;
-int pmtudisc = -1;
-
-int receive_error_msg()
-{
-	int res;
-	char cbuf[512];
-	struct iovec  iov;
-	struct msghdr msg;
-	struct cmsghdr *cmsg;
-	struct sock_extended_err *e;
-	struct icmphdr icmph;
-	struct sockaddr_in target;
-	int net_errors = 0;
-	int local_errors = 0;
-	int saved_errno = errno;
-
-	iov.iov_base = &icmph;
-	iov.iov_len = sizeof(icmph);
-	msg.msg_name = (void*)&target;
-	msg.msg_namelen = sizeof(target);
-	msg.msg_iov = &iov;
-	msg.msg_iovlen = 1;
-	msg.msg_flags = 0;
-	msg.msg_control = cbuf;
-	msg.msg_controllen = sizeof(cbuf);
-
-	res = recvmsg(icmp_sock, &msg, MSG_ERRQUEUE|MSG_DONTWAIT);
-	if (res < 0)
-		goto out;
-
-	e = NULL;
-	for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
-		if (cmsg->cmsg_level == SOL_IP) {
-			if (cmsg->cmsg_type == IP_RECVERR)
-				e = (struct sock_extended_err *)CMSG_DATA(cmsg);
-		}
-	}
-	if (e == NULL)
-		abort();
-
-	if (e->ee_origin == SO_EE_ORIGIN_LOCAL) {
-		local_errors++;
-		if (options & F_QUIET)
-			goto out;
-		if (options & F_FLOOD)
-			write(STDOUT_FILENO, "E", 1);
-		else if (e->ee_errno != EMSGSIZE)
-			fprintf(stderr, "ping: local error: %s\n", strerror(e->ee_errno));
-		else
-			fprintf(stderr, "ping: local error: Message too long, mtu=%u\n", e->ee_info);
-		nerrors++;
-	} else if (e->ee_origin == SO_EE_ORIGIN_ICMP) {
-		struct sockaddr_in *sin = (struct sockaddr_in*)(e+1);
-
-		if (res < sizeof(icmph) ||
-		    target.sin_addr.s_addr != whereto.sin_addr.s_addr ||
-		    icmph.type != ICMP_ECHO ||
-		    icmph.un.echo.id != ident) {
-			/* Not our error, not an error at all. Clear. */
-			saved_errno = 0;
-			goto out;
-		}
-
-		acknowledge(ntohs(icmph.un.echo.sequence));
-
-		if (!working_recverr) {
-			struct icmp_filter filt;
-			working_recverr = 1;
-			/* OK, it works. Add stronger filter. */
-			filt.data = ~((1<<ICMP_SOURCE_QUENCH)|
-				      (1<<ICMP_REDIRECT)|
-				      (1<<ICMP_ECHOREPLY));
-			if (setsockopt(icmp_sock, SOL_RAW, ICMP_FILTER, (char*)&filt, sizeof(filt)) == -1)
-				perror("\rWARNING: setsockopt(ICMP_FILTER)");
-		}
-
-		net_errors++;
-		nerrors++;
-		if (options & F_QUIET)
-			goto out;
-		if (options & F_FLOOD) {
-			write(STDOUT_FILENO, "\bE", 2);
-		} else {
-			printf("From %s icmp_seq=%u ", pr_addr(sin->sin_addr.s_addr), ntohs(icmph.un.echo.sequence));
-			pr_icmph(e->ee_type, e->ee_code, e->ee_info, NULL);
-			fflush(stdout);
-		}
-	}
-
-out:
-	errno = saved_errno;
-	return net_errors ? : -local_errors;
-}
-
-/*
- * pinger --
- * 	Compose and transmit an ICMP ECHO REQUEST packet.  The IP packet
- * will be added on by the kernel.  The ID field is our UNIX process ID,
- * and the sequence number is an ascending integer.  The first 8 bytes
- * of the data portion are used to hold a UNIX "timeval" struct in VAX
- * byte-order, to compute the round-trip time.
- */
-int send_probe()
-{
-	struct icmphdr *icp;
-	int cc;
-	int i;
-
-	icp = (struct icmphdr *)outpack;
-	icp->type = ICMP_ECHO;
-	icp->code = 0;
-	icp->checksum = 0;
-	icp->un.echo.sequence = htons(ntransmitted+1);
-	icp->un.echo.id = ident;			/* ID */
-
-	CLR((ntransmitted+1) % mx_dup_ck);
-
-	if (timing) {
-		if (options&F_LATENCY) {
-			static volatile int fake_fucked_egcs = sizeof(struct timeval);
-			struct timeval tmp_tv;
-			gettimeofday(&tmp_tv, NULL);
-			/* egcs is crap or glibc is crap, but memcpy 
-			   does not copy anything, if len is constant! */
-			memcpy(icp+1, &tmp_tv, fake_fucked_egcs);
-		} else {
-			memset(icp+1, 0, sizeof(struct timeval));
-		}
-	}
-
-	cc = datalen + 8;			/* skips ICMP portion */
-
-	/* compute ICMP checksum here */
-	icp->checksum = in_cksum((u_short *)icp, cc, 0);
-
-	if (timing && !(options&F_LATENCY)) {
-		static volatile int fake_fucked_egcs = sizeof(struct timeval);
-	        struct timeval tmp_tv;
-		gettimeofday(&tmp_tv, NULL);
-		/* egcs is crap or glibc is crap, but memcpy 
-		   does not copy anything, if len is constant! */
-		memcpy(icp+1, &tmp_tv, fake_fucked_egcs);
-		icp->checksum = in_cksum((u_short *)(icp+1), fake_fucked_egcs, ~icp->checksum);
-	}
-
-        do {
-		static struct iovec iov = {outpack, 0};
-		static struct msghdr m = { &whereto, sizeof(whereto),
-						   &iov, 1, &cmsg, 0, 0 };
-		m.msg_controllen = cmsg_len;
-		iov.iov_len = cc;
-
-		i = sendmsg(icmp_sock, &m, confirm);
-		confirm = 0;
-	} while (0);
-
-	return (cc == i ? 0 : i);
-}
-
-/*
- * parse_reply --
- *	Print out the packet, if it came from us.  This logic is necessary
- * because ALL readers of the ICMP socket get a copy of ALL ICMP packets
- * which arrive ('tis only fair).  This permits multiple copies of this
- * program to be run without having intermingled output (or statistics!).
- */
-int
-parse_reply(struct msghdr *msg, int cc, void *addr, struct timeval *tv)
-{
-	struct sockaddr_in *from = addr;
-	__u8 *buf = msg->msg_iov->iov_base;
-	struct icmphdr *icp;
-	struct iphdr *ip;
-	int hlen;
-	int csfailed;
-
-	/* Check the IP header */
-	ip = (struct iphdr *)buf;
-	hlen = ip->ihl*4;
-	if (cc < hlen + 8 || ip->ihl < 5) {
-		if (options & F_VERBOSE)
-			fprintf(stderr, "ping: packet too short (%d bytes) from %s\n", cc,
-				pr_addr(from->sin_addr.s_addr));
-		return 1;
-	}
-
-	/* Now the ICMP part */
-	cc -= hlen;
-	icp = (struct icmphdr *)(buf + hlen);
-	csfailed = in_cksum((u_short *)icp, cc, 0);
-
-	if (icp->type == ICMP_ECHOREPLY) {
-		if (icp->un.echo.id != ident)
-			return 1;			/* 'Twas not our ECHO */
-		if (gather_statistics((__u8*)(icp+1), cc,
-				      ntohs(icp->un.echo.sequence),
-				      ip->ttl, 0, tv, pr_addr(from->sin_addr.s_addr)))
-			return 0;
-	} else {
-		/* We fall here when a redirect or source quench arrived.
-		 * Also this branch processes icmp errors, when IP_RECVERR
-		 * is broken. */
-		   
-	        switch (icp->type) {
-		case ICMP_ECHO:
-			/* MUST NOT */
-			return 1;
-		case ICMP_SOURCE_QUENCH:
-		case ICMP_REDIRECT:
-		case ICMP_DEST_UNREACH:
-		case ICMP_TIME_EXCEEDED:
-		case ICMP_PARAMETERPROB:
-			{
-				struct iphdr * iph = (struct  iphdr *)(&icp[1]);
-				struct icmphdr *icp1 = (struct icmphdr*)((unsigned char *)iph + iph->ihl*4);
-				int error_pkt;
-				if (cc < 8+sizeof(struct iphdr)+8 ||
-				    cc < 8+iph->ihl*4+8)
-					return 1;
-				if (icp1->type != ICMP_ECHO ||
-				    iph->daddr != whereto.sin_addr.s_addr ||
-				    icp1->un.echo.id != ident)
-					return 1;
-				error_pkt = (icp->type != ICMP_REDIRECT &&
-					     icp->type != ICMP_SOURCE_QUENCH);
-				if (error_pkt) {
-					acknowledge(ntohs(icp1->un.echo.sequence));
-					if (working_recverr) {
-						return 0;
-					} else {
-						static int once;
-						/* Sigh, IP_RECVERR for raw socket
-						 * was broken until 2.4.9. So, we ignore
-						 * the first error and warn on the second.
-						 */
-						if (once++ == 1)
-							fprintf(stderr, "\rWARNING: kernel is not very fresh, upgrade is recommended.\n");
-						if (once == 1)
-							return 0;
-					}
-				}
-				nerrors+=error_pkt;
-				if (options&F_QUIET)
-					return !error_pkt;
-				if (options & F_FLOOD) {
-					if (error_pkt)
-						write(STDOUT_FILENO, "\bE", 2);
-					return !error_pkt;
-				}
-				printf("From %s: icmp_seq=%u ",
-				       pr_addr(from->sin_addr.s_addr),
-				       ntohs(icp1->un.echo.sequence));
-				if (csfailed)
-					printf("(BAD CHECKSUM)");
-				pr_icmph(icp->type, icp->code, ntohl(icp->un.gateway), icp);
-				return !error_pkt;
-			}
-	        default:
-			/* MUST NOT */
-			break;
-		}
-		if ((options & F_FLOOD) && !(options & (F_VERBOSE|F_QUIET))) {
-			if (!csfailed)
-				write(STDOUT_FILENO, "!E", 2);
-			else
-				write(STDOUT_FILENO, "!EC", 3);
-			return 0;
-		}
-		if (!(options & F_VERBOSE) || uid)
-			return 0;
-		printf("From %s: ", pr_addr(from->sin_addr.s_addr));
-		if (csfailed) {
-			printf("(BAD CHECKSUM)\n");
-			return 0;
-		}
-		pr_icmph(icp->type, icp->code, ntohl(icp->un.gateway), icp);
-		return 0;
-	}
-
-	if (!(options & F_FLOOD)) {
-		pr_options(buf + sizeof(struct iphdr), hlen);
-
-		if (options & F_AUDIBLE)
-			putchar('\a');
-		putchar('\n');
-		fflush(stdout);
-	}
-	return 0;
-}
-
-u_short
-in_cksum(const u_short *addr, register int len, u_short csum)
-{
-	register int nleft = len;
-	const u_short *w = addr;
-	register u_short answer;
-	register int sum = csum;
-
-	/*
-	 *  Our algorithm is simple, using a 32 bit accumulator (sum),
-	 *  we add sequential 16 bit words to it, and at the end, fold
-	 *  back all the carry bits from the top 16 bits into the lower
-	 *  16 bits.
-	 */
-	while (nleft > 1)  {
-		sum += *w++;
-		nleft -= 2;
-	}
-
-	/* mop up an odd byte, if necessary */
-	if (nleft == 1)
-		sum += htons(*(u_char *)w << 8);
-
-	/*
-	 * add back carry outs from top 16 bits to low 16 bits
-	 */
-	sum = (sum >> 16) + (sum & 0xffff);	/* add hi 16 to low 16 */
-	sum += (sum >> 16);			/* add carry */
-	answer = ~sum;				/* truncate to 16 bits */
-	return (answer);
-}
-
-/*
- * pr_icmph --
- *	Print a descriptive string about an ICMP header.
- */
-void pr_icmph(__u8 type, __u8 code, __u32 info, struct icmphdr *icp)
-{
-	switch(type) {
-	case ICMP_ECHOREPLY:
-		printf("Echo Reply\n");
-		/* XXX ID + Seq + Data */
-		break;
-	case ICMP_DEST_UNREACH:
-		switch(code) {
-		case ICMP_NET_UNREACH:
-			printf("Destination Net Unreachable\n");
-			break;
-		case ICMP_HOST_UNREACH:
-			printf("Destination Host Unreachable\n");
-			break;
-		case ICMP_PROT_UNREACH:
-			printf("Destination Protocol Unreachable\n");
-			break;
-		case ICMP_PORT_UNREACH:
-			printf("Destination Port Unreachable\n");
-			break;
-		case ICMP_FRAG_NEEDED:
-			printf("Frag needed and DF set (mtu = %u)\n", info);
-			break;
-		case ICMP_SR_FAILED:
-			printf("Source Route Failed\n");
-			break;
-		case ICMP_PKT_FILTERED:
-			printf("Packet filtered\n");
-			break;
-		default:
-			printf("Dest Unreachable, Bad Code: %d\n", code);
-			break;
-		}
-		if (icp && (options & F_VERBOSE))
-			pr_iph((struct iphdr*)(icp + 1));
-		break;
-	case ICMP_SOURCE_QUENCH:
-		printf("Source Quench\n");
-		if (icp && (options & F_VERBOSE))
-			pr_iph((struct iphdr*)(icp + 1));
-		break;
-	case ICMP_REDIRECT:
-		switch(code) {
-		case ICMP_REDIR_NET:
-			printf("Redirect Network");
-			break;
-		case ICMP_REDIR_HOST:
-			printf("Redirect Host");
-			break;
-		case ICMP_REDIR_NETTOS:
-			printf("Redirect Type of Service and Network");
-			break;
-		case ICMP_REDIR_HOSTTOS:
-			printf("Redirect Type of Service and Host");
-			break;
-		default:
-			printf("Redirect, Bad Code: %d", code);
-			break;
-		}
-		if (icp)
-			printf("(New nexthop: %s)\n", pr_addr(icp->un.gateway));
-		if (icp && (options & F_VERBOSE))
-			pr_iph((struct iphdr*)(icp + 1));
-		break;
-	case ICMP_ECHO:
-		printf("Echo Request\n");
-		/* XXX ID + Seq + Data */
-		break;
-	case ICMP_TIME_EXCEEDED:
-		switch(code) {
-		case ICMP_EXC_TTL:
-			printf("Time to live exceeded\n");
-			break;
-		case ICMP_EXC_FRAGTIME:
-			printf("Frag reassembly time exceeded\n");
-			break;
-		default:
-			printf("Time exceeded, Bad Code: %d\n", code);
-			break;
-		}
-		if (icp && (options & F_VERBOSE))
-			pr_iph((struct iphdr*)(icp + 1));
-		break;
-	case ICMP_PARAMETERPROB:
-		printf("Parameter problem: pointer = %u\n", icp ? (ntohl(icp->un.gateway)>>24) : info);
-		if (icp && (options & F_VERBOSE))
-			pr_iph((struct iphdr*)(icp + 1));
-		break;
-	case ICMP_TIMESTAMP:
-		printf("Timestamp\n");
-		/* XXX ID + Seq + 3 timestamps */
-		break;
-	case ICMP_TIMESTAMPREPLY:
-		printf("Timestamp Reply\n");
-		/* XXX ID + Seq + 3 timestamps */
-		break;
-	case ICMP_INFO_REQUEST:
-		printf("Information Request\n");
-		/* XXX ID + Seq */
-		break;
-	case ICMP_INFO_REPLY:
-		printf("Information Reply\n");
-		/* XXX ID + Seq */
-		break;
-#ifdef ICMP_MASKREQ
-	case ICMP_MASKREQ:
-		printf("Address Mask Request\n");
-		break;
-#endif
-#ifdef ICMP_MASKREPLY
-	case ICMP_MASKREPLY:
-		printf("Address Mask Reply\n");
-		break;
-#endif
-	default:
-		printf("Bad ICMP type: %d\n", type);
-	}
-}
-
-void pr_options(unsigned char * cp, int hlen)
-{
-	int i, j;
-	int optlen, totlen;
-	unsigned char * optptr;
-	static int old_rrlen;
-	static char old_rr[MAX_IPOPTLEN];
-
-	totlen = hlen-sizeof(struct iphdr);
-	optptr = cp;
-
-	while (totlen > 0) {
-		if (*optptr == IPOPT_EOL)
-			break;
-		if (*optptr == IPOPT_NOP) {
-			totlen--;
-			optptr++;
-			printf("\nNOP");
-			continue;
-		}
-		cp = optptr;
-		optlen = optptr[1];
-		if (optlen < 2 || optlen > totlen)
-			break;
-
-		switch (*cp) {
-		case IPOPT_SSRR:
-		case IPOPT_LSRR:
-			printf("\n%cSRR: ", *cp==IPOPT_SSRR ? 'S' : 'L');
-			j = *++cp;
-			i = *++cp;
-			i -= 4;
-			cp++;
-			if (j > IPOPT_MINOFF) {
-				for (;;) {
-					__u32 address;
-					memcpy(&address, cp, 4);
-					cp += 4;
-					if (address == 0)
-						printf("\t0.0.0.0");
-					else
-						printf("\t%s", pr_addr(address));
-					j -= 4;
-					putchar('\n');
-					if (j <= IPOPT_MINOFF)
-						break;
-				}
-			}
-			break;
-		case IPOPT_RR:
-			j = *++cp;		/* get length */
-			i = *++cp;		/* and pointer */
-			if (i > j)
-				i = j;
-			i -= IPOPT_MINOFF;
-			if (i <= 0)
-				continue;
-			if (i == old_rrlen
-			    && !memcmp((char *)cp, old_rr, i)
-			    && !(options & F_FLOOD)) {
-				printf("\t(same route)");
-				i = ((i + 3) / 4) * 4;
-				cp += i;
-				break;
-			}
-			old_rrlen = i;
-			memcpy((char *)cp, old_rr, i);
-			printf("\nRR: ");
-			cp++;
-			for (;;) {
-				__u32 address;
-				memcpy(&address, cp, 4);
-				cp += 4;
-				if (address == 0)
-					printf("\t0.0.0.0");
-				else
-					printf("\t%s", pr_addr(address));
-				i -= 4;
-				putchar('\n');
-				if (i <= 0)
-					break;
-			}
-			break;
-		case IPOPT_TS:
-		{
-			int stdtime = 0, nonstdtime = 0;
-			__u8 flags;
-			j = *++cp;		/* get length */
-			i = *++cp;		/* and pointer */
-			if (i > j)
-				i = j;
-			i -= 5;
-			if (i <= 0)
-				continue;
-			flags = *++cp;
-			printf("\nTS: ");
-			cp++;
-			for (;;) {
-				long l;
-
-				if ((flags&0xF) != IPOPT_TS_TSONLY) {
-					__u32 address;
-					memcpy(&address, cp, 4);
-					cp += 4;
-					if (address == 0)
-						printf("\t0.0.0.0");
-					else
-						printf("\t%s", pr_addr(address));
-					i -= 4;
-					if (i <= 0)
-						break;
-				}
-				l = *cp++;
-				l = (l<<8) + *cp++;
-				l = (l<<8) + *cp++;
-				l = (l<<8) + *cp++;
-
-				if  (l & 0x80000000) {
-					if (nonstdtime==0)
-						printf("\t%ld absolute not-standard", l&0x7fffffff);
-					else
-						printf("\t%ld not-standard", (l&0x7fffffff) - nonstdtime);
-					nonstdtime = l&0x7fffffff;
-				} else {
-					if (stdtime==0)
-						printf("\t%ld absolute", l);
-					else
-						printf("\t%ld", l - stdtime);
-					stdtime = l;
-				}
-				i -= 4;
-				putchar('\n');
-				if (i <= 0)
-					break;
-			}
-			if (flags>>4)
-				printf("Unrecorded hops: %d\n", flags>>4);
-			break;
-		}
-		default:
-			printf("\nunknown option %x", *cp);
-			break;
-		}
-		totlen -= optlen;
-		optptr += optlen;
-	}
-}
-
-
-/*
- * pr_iph --
- *	Print an IP header with options.
- */
-void pr_iph(struct iphdr *ip)
-{
-	int hlen;
-	u_char *cp;
-
-	hlen = ip->ihl << 2;
-	cp = (u_char *)ip + 20;		/* point to options */
-
-	printf("Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst Data\n");
-	printf(" %1x  %1x  %02x %04x %04x",
-	       ip->version, ip->ihl, ip->tos, ip->tot_len, ip->id);
-	printf("   %1x %04x", ((ip->frag_off) & 0xe000) >> 13,
-	       (ip->frag_off) & 0x1fff);
-	printf("  %02x  %02x %04x", ip->ttl, ip->protocol, ip->check);
-	printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->saddr));
-	printf(" %s ", inet_ntoa(*(struct in_addr *)&ip->daddr));
-	printf("\n");
-	pr_options(cp, hlen);
-}
-
-/*
- * pr_addr --
- *	Return an ascii host address as a dotted quad and optionally with
- * a hostname.
- */
-char *
-pr_addr(__u32 addr)
-{
-	struct hostent *hp;
-	static char buf[4096];
-
-	if ((options & F_NUMERIC) ||
-	    !(hp = gethostbyaddr((char *)&addr, 4, AF_INET)))
-		sprintf(buf, "%s", inet_ntoa(*(struct in_addr *)&addr));
-	else
-		snprintf(buf, sizeof(buf), "%s (%s)", hp->h_name,
-			 inet_ntoa(*(struct in_addr *)&addr));
-	return(buf);
-}
-
-
-/* Set Type of Service (TOS) and other Quality of Service relating bits */
-int parsetos(char *str)
-{
-        const char *cp;
-        int tos;
-        char *ep;
-
-        /* handle both hex and decimal values */
-        if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) {
-		cp = str + 2;
-		tos = (int)strtol(cp, &ep, 16);
-        } else
-                tos = (int)strtol(str, &ep, 10);
-
-        /* doesn't look like decimal or hex, eh? */
-        if (*ep != '\0') {
-        	fprintf(stderr, "ping: \"%s\" bad value for TOS\n", str);
-        	exit(2);
-        }
-
-        if (tos > TOS_MAX) {
-        	fprintf(stderr, "ping: the decimal value of TOS bits must be 0-254 (or zero)\n");
-        	exit(2);
-        }
-	return(tos);
-}
-
-#include <linux/filter.h>
-
-void install_filter(void)
-{
-	static int once;
-	static struct sock_filter insns[] = {
-		BPF_STMT(BPF_LDX|BPF_B|BPF_MSH, 0), /* Skip IP header. F..g BSD... Look into ping6. */
-		BPF_STMT(BPF_LD|BPF_H|BPF_IND, 4), /* Load icmp echo ident */
-		BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, 0xAAAA, 0, 1), /* Ours? */
-		BPF_STMT(BPF_RET|BPF_K, ~0U), /* Yes, it passes. */
-		BPF_STMT(BPF_LD|BPF_B|BPF_IND, 0), /* Load icmp type */
-		BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, ICMP_ECHOREPLY, 1, 0), /* Echo? */
-		BPF_STMT(BPF_RET|BPF_K, 0xFFFFFFF), /* No. It passes. */
-		BPF_STMT(BPF_RET|BPF_K, 0) /* Echo with wrong ident. Reject. */
-	};
-	static struct sock_fprog filter = {
-		sizeof insns / sizeof(insns[0]),
-		insns
-	};
-
-	if (once)
-		return;
-	once = 1;
-
-	/* Patch bpflet for current identifier. */
-	insns[2] = (struct sock_filter)BPF_JUMP(BPF_JMP|BPF_JEQ|BPF_K, __constant_htons(ident), 0, 1);
-
-	if (setsockopt(icmp_sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)))
-		perror("WARNING: failed to install socket filter\n");
-}
-
-
-void usage(void)
-{
-	fprintf(stderr,
-"Usage: ping [-LRUbdfnqrvVaA] [-c count] [-i interval] [-w deadline]\n"
-"            [-p pattern] [-s packetsize] [-t ttl] [-I interface or address]\n"
-"            [-M mtu discovery hint] [-S sndbuf]\n"
-"            [ -T timestamp option ] [ -Q tos ] [hop1 ...] destination\n");
-	exit(2);
-}
-
-int main(int argc, char *argv[])
-{
-	struct hostent *hp;
-	int ch, hold, packlen;
-	int socket_errno;
-	u_char *packet;
-	char *target, hnamebuf[MAXHOSTNAMELEN];
-	char rspace[3 + 4 * NROUTES + 1];	/* record route space */
-
-	icmp_sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
-	socket_errno = errno;
-
-	/* if we were setuid root, undo that */
-	if (setuid(getuid())) return -1;
-
-	source.sin_family = AF_INET;
-
-	preload = 1;
-	while ((ch = getopt(argc, argv, COMMON_OPTSTR "bRT:")) != EOF) {
-		switch(ch) {
-		case 'b':
-		        broadcast_pings = 1;
-			break;
-		case 'Q':
-			settos = parsetos(optarg);
-			if (settos &&
-			    (setsockopt(icmp_sock, IPPROTO_IP, IP_TOS,
-					(char *)&settos, sizeof(int)) < 0)) {
-				perror("ping: error setting QOS sockopts");
-				exit(2);
-			}
-			break;
-		case 'R':
-			if (options & F_TIMESTAMP) {
-				fprintf(stderr, "Only one of -T or -R may be used\n");
-				exit(2);
-			}
-			options |= F_RROUTE;
-			break;
-		case 'T':
-			if (options & F_RROUTE) {
-				fprintf(stderr, "Only one of -T or -R may be used\n");
-				exit(2);
-			}
-			options |= F_TIMESTAMP;
-			if (strcmp(optarg, "tsonly") == 0)
-				ts_type = IPOPT_TS_TSONLY;
-			else if (strcmp(optarg, "tsandaddr") == 0)
-				ts_type = IPOPT_TS_TSANDADDR;
-			else if (strcmp(optarg, "tsprespec") == 0)
-				ts_type = IPOPT_TS_PRESPEC;
-			else {
-				fprintf(stderr, "Invalid timestamp type\n");
-				exit(2);
-			}
-			break;
-		case 'I':
-		{
-			char dummy;
-			int i1, i2, i3, i4;
-
-			if (sscanf(optarg, "%u.%u.%u.%u%c",
-				   &i1, &i2, &i3, &i4, &dummy) == 4) {
-				__u8 *ptr;
-				ptr = (__u8*)&source.sin_addr;
-				ptr[0] = i1;
-				ptr[1] = i2;
-				ptr[2] = i3;
-				ptr[3] = i4;
-				options |= F_STRICTSOURCE;
-			} else {
-				device = optarg;
-			}
-			break;
-		}
-		case 'M':
-			if (strcmp(optarg, "do") == 0)
-				pmtudisc = IP_PMTUDISC_DO;
-			else if (strcmp(optarg, "dont") == 0)
-				pmtudisc = IP_PMTUDISC_DONT;
-			else if (strcmp(optarg, "want") == 0)
-				pmtudisc = IP_PMTUDISC_WANT;
-			else {
-				fprintf(stderr, "ping: wrong value for -M: do, dont, want are valid ones.\n");
-				exit(2);
-			}
-			break;
-		case 'V':
-			printf("ping utility, iputils-ss\n");
-			exit(0);
-		COMMON_OPTIONS
-			common_options(ch);
-			break;
-		default:
-			usage();
-		}
-	}
-	argc -= optind;
-	argv += optind;
-
-	if (argc == 0) 
-		usage();
-	if (argc > 1) {
-		if (options & F_RROUTE)
-			usage();
-		else if (options & F_TIMESTAMP) {
-			if (ts_type != IPOPT_TS_PRESPEC)
-				usage();
-			if (argc > 5)
-				usage();
-		} else {
-			if (argc > 10)
-				usage();
-			options |= F_SOURCEROUTE;
-		}
-	}
-	while (argc > 0) {
-		target = *argv;
-
-		bzero((char *)&whereto, sizeof(whereto));
-		whereto.sin_family = AF_INET;
-		if (inet_aton(target, &whereto.sin_addr) == 1) {
-			hostname = target;
-			if (argc == 1)
-				options |= F_NUMERIC;
-		} else {
-			hp = gethostbyname(target);
-			hp = gethostbyname(target);
-			hp = gethostbyname(target);
-			if (!hp) {
-				fprintf(stderr, "ping: unknown host %s\n", target);
-				exit(2);
-			}
-			memcpy(&whereto.sin_addr, hp->h_addr, 4);
-			strncpy(hnamebuf, hp->h_name, sizeof(hnamebuf) - 1);
-			hnamebuf[sizeof(hnamebuf) - 1] = 0;
-			hostname = hnamebuf;
-		}
-		if (argc > 1)
-			route[nroute++] = whereto.sin_addr.s_addr;
-		argc--;
-		argv++;
-	}
-
-	if (source.sin_addr.s_addr == 0) {
-		int alen;
-		struct sockaddr_in dst = whereto;
-		int probe_fd = socket(AF_INET, SOCK_DGRAM, 0);
-
-		if (probe_fd < 0) {
-			perror("socket");
-			exit(2);
-		}
-		if (device) {
-			struct ifreq ifr;
-			memset(&ifr, 0, sizeof(ifr));
-			strncpy(ifr.ifr_name, device, IFNAMSIZ-1);
-			if (setsockopt(probe_fd, SOL_SOCKET, SO_BINDTODEVICE, device, strlen(device)+1) == -1) {
-				if (IN_MULTICAST(ntohl(dst.sin_addr.s_addr))) {
-					struct ip_mreqn imr;
-					if (ioctl(probe_fd, SIOCGIFINDEX, &ifr) < 0) {
-						fprintf(stderr, "ping: unknown iface %s\n", device);
-						exit(2);
-					}
-					memset(&imr, 0, sizeof(imr));
-					imr.imr_ifindex = ifr.ifr_ifindex;
-					if (setsockopt(probe_fd, SOL_IP, IP_MULTICAST_IF, &imr, sizeof(imr)) == -1) {
-						perror("ping: IP_MULTICAST_IF");
-						exit(2);
-					}
-				}
-			}
-		}
-
-		if (settos &&
-		    setsockopt(probe_fd, IPPROTO_IP, IP_TOS, (char *)&settos, sizeof(int)) < 0)
-			perror("Warning: error setting QOS sockopts");
-
-		dst.sin_port = htons(1025);
-		if (nroute)
-			dst.sin_addr.s_addr = route[0];
-		if (connect(probe_fd, (struct sockaddr*)&dst, sizeof(dst)) == -1) {
-			if (errno == EACCES) {
-				if (broadcast_pings == 0) {
-					fprintf(stderr, "Do you want to ping broadcast? Then -b\n");
-					exit(2);
-				}
-				fprintf(stderr, "WARNING: pinging broadcast address\n");
-				if (setsockopt(probe_fd, SOL_SOCKET, SO_BROADCAST,
-					       &broadcast_pings, sizeof(broadcast_pings)) < 0) {
-					perror ("can't set broadcasting");
-					exit(2);
-				}
-				if (connect(probe_fd, (struct sockaddr*)&dst, sizeof(dst)) == -1) {
-					perror("connect");
-					exit(2);
-				}
-			} else {
-				perror("connect");
-				exit(2);
-			}
-		}
-		alen = sizeof(source);
-		if (getsockname(probe_fd, (struct sockaddr*)&source, &alen) == -1) {
-			perror("getsockname");
-			exit(2);
-		}
-		source.sin_port = 0;
-		close(probe_fd);
-	} while (0);
-
-	if (whereto.sin_addr.s_addr == 0)
-		whereto.sin_addr.s_addr = source.sin_addr.s_addr;
-
-	if (icmp_sock < 0) {
-		errno = socket_errno;
-		perror("ping: icmp open socket");
-		exit(2);
-	}
-
-	if (device) {
-		struct ifreq ifr;
-
-		memset(&ifr, 0, sizeof(ifr));
-		strncpy(ifr.ifr_name, device, IFNAMSIZ-1);
-		if (ioctl(icmp_sock, SIOCGIFINDEX, &ifr) < 0) {
-			fprintf(stderr, "ping: unknown iface %s\n", device);
-			exit(2);
-		}
-		cmsg.ipi.ipi_ifindex = ifr.ifr_ifindex;
-		cmsg_len = sizeof(cmsg);
-	}
-
-	if (broadcast_pings || IN_MULTICAST(ntohl(whereto.sin_addr.s_addr))) {
-		if (uid) {
-			if (interval < 1000) {
-				fprintf(stderr, "ping: broadcast ping with too short interval.\n");
-				exit(2);
-			}
-			if (pmtudisc >= 0 && pmtudisc != IP_PMTUDISC_DO) {
-				fprintf(stderr, "ping: broadcast ping does not fragment.\n");
-				exit(2);
-			}
-		}
-		if (pmtudisc < 0)
-			pmtudisc = IP_PMTUDISC_DO;
-	}
-
-	if (pmtudisc >= 0) {
-		if (setsockopt(icmp_sock, SOL_IP, IP_MTU_DISCOVER, &pmtudisc, sizeof(pmtudisc)) == -1) {
-			perror("ping: IP_MTU_DISCOVER");
-			exit(2);
-		}
-	}
-
-	if ((options&F_STRICTSOURCE) &&
-	    bind(icmp_sock, (struct sockaddr*)&source, sizeof(source)) == -1) {
-		perror("bind");
-		exit(2);
-	}
-
-	if (1) {
-		struct icmp_filter filt;
-		filt.data = ~((1<<ICMP_SOURCE_QUENCH)|
-			      (1<<ICMP_DEST_UNREACH)|
-			      (1<<ICMP_TIME_EXCEEDED)|
-			      (1<<ICMP_PARAMETERPROB)|
-			      (1<<ICMP_REDIRECT)|
-			      (1<<ICMP_ECHOREPLY));
-		if (setsockopt(icmp_sock, SOL_RAW, ICMP_FILTER, (char*)&filt, sizeof(filt)) == -1)
-			perror("WARNING: setsockopt(ICMP_FILTER)");
-	}
-
-	hold = 1;
-	if (setsockopt(icmp_sock, SOL_IP, IP_RECVERR, (char *)&hold, sizeof(hold)))
-		fprintf(stderr, "WARNING: your kernel is veeery old. No problems.\n");
-
-	/* record route option */
-	if (options & F_RROUTE) {
-	        bzero(rspace, sizeof(rspace));
-		rspace[0] = IPOPT_NOP;
-		rspace[1+IPOPT_OPTVAL] = IPOPT_RR;
-		rspace[1+IPOPT_OLEN] = sizeof(rspace)-1;
-		rspace[1+IPOPT_OFFSET] = IPOPT_MINOFF;
-		optlen = 40;
-		if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, sizeof(rspace)) < 0) {
-			perror("ping: record route");
-			exit(2);
-		}
-	}
-	if (options & F_TIMESTAMP) {
-	        bzero(rspace, sizeof(rspace));
-		rspace[0] = IPOPT_TIMESTAMP;
-		rspace[1] = (ts_type==IPOPT_TS_TSONLY ? 40 : 36);
-		rspace[2] = 5;
-		rspace[3] = ts_type;
-		if (ts_type == IPOPT_TS_PRESPEC) {
-			int i;
-			rspace[1] = 4+nroute*8;
-			for (i=0; i<nroute; i++)
-				*(__u32*)&rspace[4+i*8] = route[i];
-		}
-		if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, rspace[1]) < 0) {
-			rspace[3] = 2;
-			if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, rspace[1]) < 0) {
-				perror("ping: ts option");
-				exit(2);
-			}
-		}
-		optlen = 40;
-	}
-	if (options & F_SOURCEROUTE) {
-	        int i;
-	        bzero(rspace, sizeof(rspace));
-		rspace[0] = IPOPT_NOOP;
-		rspace[1+IPOPT_OPTVAL] = (options & F_SO_DONTROUTE) ? IPOPT_SSRR
-			: IPOPT_LSRR;
-		rspace[1+IPOPT_OLEN] = 3 + nroute*4;
-		rspace[1+IPOPT_OFFSET] = IPOPT_MINOFF;
-		for (i=0; i<nroute; i++)
-			*(__u32*)&rspace[4+i*4] = route[i];
-		
-		if (setsockopt(icmp_sock, IPPROTO_IP, IP_OPTIONS, rspace, 4 + nroute*4) < 0) {
-			perror("ping: record route");
-			exit(2);
-		}
-		optlen = 40;
-	}
-
-	/* Estimate memory eaten by single packet. It is rough estimate.
-	 * Actually, for small datalen's it depends on kernel side a lot. */
-	hold = datalen + 8;
-	hold += ((hold+511)/512)*(optlen + 20 + 16 + 64 + 160);
-	sock_setbufs(icmp_sock, hold);
-
-	if (broadcast_pings) {
-		if (setsockopt(icmp_sock, SOL_SOCKET, SO_BROADCAST,
-			       &broadcast_pings, sizeof(broadcast_pings)) < 0) {
-			perror ("ping: can't set broadcasting");
-			exit(2);
-		}
-        }
-
-	if (options & F_NOLOOP) {
-		int loop = 0;
-		if (setsockopt(icmp_sock, IPPROTO_IP, IP_MULTICAST_LOOP,
-							&loop, 1) == -1) {
-			perror ("ping: can't disable multicast loopback");
-			exit(2);
-		}
-	}
-	if (options & F_TTL) {
-		int ittl = ttl;
-		if (setsockopt(icmp_sock, IPPROTO_IP, IP_MULTICAST_TTL,
-							&ttl, 1) == -1) {
-			perror ("ping: can't set multicast time-to-live");
-			exit(2);
-		}
-		if (setsockopt(icmp_sock, IPPROTO_IP, IP_TTL,
-							&ittl, sizeof(ittl)) == -1) {
-			perror ("ping: can't set unicast time-to-live");
-			exit(2);
-		}
-	}
-
-	if (datalen > 0xFFFF - 8 - optlen - 20) {
-		if (uid || datalen > sizeof(outpack)-8) {
-			fprintf(stderr, "Error: packet size %d is too large. Maximum is %d\n", datalen, 0xFFFF-8-20-optlen);
-			exit(2);
-		}
-		/* Allow small oversize to root yet. It will cause EMSGSIZE. */
-		fprintf(stderr, "WARNING: packet size %d is too large. Maximum is %d\n", datalen, 0xFFFF-8-20-optlen);
-	}
-
-	if (datalen >= sizeof(struct timeval))	/* can we time transfer */
-		timing = 1;
-	packlen = datalen + MAXIPLEN + MAXICMPLEN;
-	if (!(packet = (u_char *)malloc((u_int)packlen))) {
-		fprintf(stderr, "ping: out of memory.\n");
-		exit(2);
-	}
-
-	printf("PING %s (%s) ", hostname, inet_ntoa(whereto.sin_addr));
-	if (device || (options&F_STRICTSOURCE))
-		printf("from %s %s: ", inet_ntoa(source.sin_addr), device ?: "");
-	printf("%d(%d) bytes of data.\n", datalen, datalen+8+optlen+20);
-
-	setup(icmp_sock);
-
-	main_loop(icmp_sock, packet, packlen);
-	return 0;
-}
-
-void *dlopen(const char *filename, int flag) { return 0; }
-char *dlerror(void) { return 0; }
-void *dlsym(void *handle, const char *symbol) { return 0; }
-int dlclose(void *handle) { return 0; }
diff --git a/ping_common.h b/ping_common.h
deleted file mode 100644
index a7c494d..0000000
--- a/ping_common.h
+++ /dev/null
@@ -1,199 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <time.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <linux/sockios.h>
-#include <sys/file.h>
-#include <sys/time.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <sys/uio.h>
-#include <sys/poll.h>
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-#include <netdb.h>
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <linux/errqueue.h>
-
-#define	DEFDATALEN	(64 - 8)	/* default data length */
-
-#define	MAXWAIT		10		/* max seconds to wait for response */
-#define MININTERVAL	10		/* Minimal interpacket gap */
-#define MINUSERINTERVAL	200		/* Minimal allowed interval for non-root */
-
-#define SCHINT(a)	(((a) <= MININTERVAL) ? MININTERVAL : (a))
-
-#define	A(bit)		rcvd_tbl[(bit)>>3]	/* identify byte in array */
-#define	B(bit)		(1 << ((bit) & 0x07))	/* identify bit in byte */
-#define	SET(bit)	(A(bit) |= B(bit))
-#define	CLR(bit)	(A(bit) &= (~B(bit)))
-#define	TST(bit)	(A(bit) & B(bit))
-
-/* various options */
-extern int options;
-#define	F_FLOOD		0x001
-#define	F_INTERVAL	0x002
-#define	F_NUMERIC	0x004
-#define	F_PINGFILLED	0x008
-#define	F_QUIET		0x010
-#define	F_RROUTE	0x020
-#define	F_SO_DEBUG	0x040
-#define	F_SO_DONTROUTE	0x080
-#define	F_VERBOSE	0x100
-#define	F_TIMESTAMP	0x200
-#define	F_FLOWINFO	0x200
-#define	F_SOURCEROUTE	0x400
-#define	F_TCLASS	0x400
-#define	F_FLOOD_POLL	0x800
-#define	F_LATENCY	0x1000
-#define	F_AUDIBLE	0x2000
-#define	F_ADAPTIVE	0x4000
-#define	F_STRICTSOURCE	0x8000
-#define F_NOLOOP	0x10000
-#define F_TTL		0x20000
-
-/*
- * MAX_DUP_CHK is the number of bits in received table, i.e. the maximum
- * number of received sequence numbers we can keep track of.
- */
-#define	MAX_DUP_CHK	0x10000
-extern int mx_dup_ck;
-extern char rcvd_tbl[MAX_DUP_CHK / 8];
-
-
-extern u_char outpack[];
-extern int maxpacket;
-
-extern int datalen;
-extern char *hostname;
-extern int uid;
-extern int ident;			/* process id to identify our packets */
-
-extern int sndbuf;
-extern int ttl;
-
-extern long npackets;			/* max packets to transmit */
-extern long nreceived;			/* # of packets we got back */
-extern long nrepeats;			/* number of duplicates */
-extern long ntransmitted;		/* sequence # for outbound packets = #sent */
-extern long nchecksum;			/* replies with bad checksum */
-extern long nerrors;			/* icmp errors */
-extern int interval;			/* interval between packets (msec) */
-extern int preload;
-extern int deadline;			/* time to die */
-extern int lingertime;
-extern struct timeval start_time, cur_time;
-extern volatile int exiting;
-extern volatile int status_snapshot;
-extern int confirm;
-extern int confirm_flag;
-extern int working_recverr;
-
-#ifndef MSG_CONFIRM
-#define MSG_CONFIRM 0
-#endif
-
-
-/* timing */
-extern int timing;			/* flag to do timing */
-extern long tmin;			/* minimum round trip time */
-extern long tmax;			/* maximum round trip time */
-extern long long tsum;			/* sum of all times, for doing average */
-extern long long tsum2;
-extern int rtt;
-extern __u16 acked;
-extern int pipesize;
-
-#define COMMON_OPTIONS \
-case 'a': case 'U': case 'c': case 'd': \
-case 'f': case 'i': case 'w': case 'l': \
-case 'S': case 'n': case 'p': case 'q': \
-case 'r': case 's': case 'v': case 'L': \
-case 't': case 'A': case 'W': case 'B':
-
-#define COMMON_OPTSTR "h?VQ:I:M:aUc:dfi:w:l:S:np:qrs:vLt:AW:B"
-
-
-/*
- * tvsub --
- *	Subtract 2 timeval structs:  out = out - in.  Out is assumed to
- * be >= in.
- */
-static inline void tvsub(struct timeval *out, struct timeval *in)
-{
-	if ((out->tv_usec -= in->tv_usec) < 0) {
-		--out->tv_sec;
-		out->tv_usec += 1000000;
-	}
-	out->tv_sec -= in->tv_sec;
-}
-
-static inline void set_signal(int signo, void (*handler)(int))
-{
-	struct sigaction sa;
-
-	memset(&sa, 0, sizeof(sa));
-
-	sa.sa_handler = (void (*)(int))handler;
-#ifdef SA_INTERRUPT
-	sa.sa_flags = SA_INTERRUPT;
-#endif
-	sigaction(signo, &sa, NULL);
-}
-
-extern int __schedule_exit(int next);
-
-static inline int schedule_exit(int next)
-{
-	if (npackets && ntransmitted >= npackets && !deadline)
-		next = __schedule_exit(next);
-	return next;
-}
-
-static inline int in_flight(void)
-{
-	__u16 diff = (__u16)ntransmitted - acked;
-	return (diff<=0x7FFF) ? diff : ntransmitted-nreceived-nerrors;
-}
-
-static inline void acknowledge(__u16 seq)
-{ 
-	__u16 diff = (__u16)ntransmitted - seq;
-	if (diff <= 0x7FFF) {
-		if ((int)diff+1 > pipesize)
-			pipesize = (int)diff+1;
-		if ((__s16)(seq - acked) > 0 ||
-		    (__u16)ntransmitted - acked > 0x7FFF)
-			acked = seq;
-	}
-}
-
-static inline void advance_ntransmitted(void)
-{
-	ntransmitted++;
-	/* Invalidate acked, if 16 bit seq overflows. */
-	if ((__u16)ntransmitted - acked > 0x7FFF)
-		acked = (__u16)ntransmitted + 1;
-}
-
-
-extern int send_probe(void);
-extern int receive_error_msg(void);
-extern int parse_reply(struct msghdr *msg, int len, void *addr, struct timeval *);
-extern void install_filter(void);
-
-extern int pinger(void);
-extern void sock_setbufs(int icmp_sock, int alloc);
-extern void setup(int icmp_sock);
-extern void main_loop(int icmp_sock, __u8 *buf, int buflen) __attribute__((noreturn));
-extern void finish(void) __attribute__((noreturn));
-extern void status(void);
-extern void common_options(int ch);
-extern int gather_statistics(__u8 *ptr, int cc, __u16 seq, int hops,
-			     int csfailed, struct timeval *tv, char *from);