The ping(8) utility has an -o switch that tells it to exit after
receiving the first reply. This is useful, but ping6(8) doesn't have
it.
Simple patch attached.
Comments/reviews/whatnots?
I'll commit to HEAD in a few days if I don't hear any objections.
--
Dima Dorfman
Index: ping6.8
===================================================================
RCS file: /home/ncvs/src/sbin/ping6/ping6.8,v
retrieving revision 1.23
diff -u -r1.23 ping6.8
--- ping6.8 10 Feb 2005 09:19:32 -0000 1.23
+++ ping6.8 15 Nov 2007 11:44:31 -0000
@@ -29,7 +29,7 @@
.\"
.\" $FreeBSD: src/sbin/ping6/ping6.8,v 1.23 2005/02/10 09:19:32 ru Exp $
.\"
-.Dd May 17, 1998
+.Dd November 15, 2007
.Dt PING6 8
.Os
.Sh NAME
@@ -40,7 +40,7 @@
.Sh SYNOPSIS
.Nm
.\" without ipsec, or new ipsec
-.Op Fl dfHmnNqtvwW
+.Op Fl dfHmnNoqtvwW
.\" old ipsec
.\" .Op Fl AdEfmnNqRtvwW
.Bk -words
@@ -225,6 +225,8 @@
outgoing interface needs to be specified by
.Fl I
option.
+.It Fl o
+Exit successfully after receiving one reply packet.
.It Fl p Ar pattern
You may specify up to 16
.Dq pad
Index: ping6.c
===================================================================
RCS file: /home/ncvs/src/sbin/ping6/ping6.c,v
retrieving revision 1.31
diff -u -r1.31 ping6.c
--- ping6.c 1 Jul 2007 12:08:06 -0000 1.31
+++ ping6.c 15 Nov 2007 11:45:12 -0000
@@ -188,6 +188,7 @@
#define F_NIGROUP 0x40000
#define F_SUPTYPES 0x80000
#define F_NOMINMTU 0x100000
+#define F_ONCE 0x200000
#define F_NOUSERDATA (F_NODEADDR | F_FQDN | F_FQDNOLD | F_SUPTYPES)
u_int options;
@@ -344,7 +345,7 @@
#endif /*IPSEC_POLICY_IPSEC*/
#endif
while ((ch = getopt(argc, argv,
- "a:b:c:dfHg:h:I:i:l:mnNp:qS:s:tvwW" ADDOPTS)) != -1) {
+ "a:b:c:dfHg:h:I:i:l:mnNop:qS:s:tvwW" ADDOPTS)) != -1) {
#undef ADDOPTS
switch (ch) {
case 'a':
@@ -485,6 +486,9 @@
case 'N':
options |= F_NIGROUP;
break;
+ case 'o':
+ options |= F_ONCE;
+ break;
case 'p': /* fill buffer with user pattern */
options |= F_PINGFILLED;
fill((char *)datap, optarg);
@@ -1164,7 +1168,8 @@
*/
pr_pack(packet, cc, &m);
}
- if (npackets && nreceived >= npackets)
+ if (( (options & F_ONCE) != 0 && nreceived > 0) ||
+ (npackets > 0 && nreceived >= npackets))
break;
}
summary();
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