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1) Minor nits in the usage message from bde. I took out the hard tabs and

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used spaces to align the second line under the program name.
2) Cache uid after call to setuid(getuid()) so we don't waste a system call
   for each packet with a call to getuid for the -v case.
3) Update manual to reflect new restriction on -l from last delta.

Suggested by:	bde, Bill Fenner
This commit is contained in:
Warner Losh 1997-03-02 20:01:13 +00:00
parent 984e3edbe2
commit ee2bf73496
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=23295
2 changed files with 7 additions and 4 deletions
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3
sbin/ping/ping.8
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@ -30,7 +30,7 @@
.\" SUCH DAMAGE.
.\"
.\" @(#)ping.8 8.2 (Berkeley) 12/11/93
.\" $Id: ping.8,v 1.8 1997/03/01 20:19:18 wollman Exp $
.\" $Id: ping.8,v 1.9 1997/03/02 06:32:42 imp Exp $
.\"
.Dd March 1, 1997
.Dt PING 8
@ -120,6 +120,7 @@ is specified,
.Nm ping
sends that many packets as fast as possible before falling into its normal
mode of behavior.
Only the super-user may use this option.
.It Fl L
Suppress loopback of multicast packets.
This flag only applies if the ping destination is a multicast address.

8
sbin/ping/ping.c
View File

@ -45,7 +45,7 @@ static const char copyright[] =
static char sccsid[] = "@(#)ping.c 8.1 (Berkeley) 6/5/93";
*/
static const char rcsid[] =
"$Id: ping.c,v 1.17 1997/03/01 20:19:18 wollman Exp $";
"$Id: ping.c,v 1.18 1997/03/02 06:32:40 imp Exp $";
#endif /* not lint */
/*
@ -138,6 +138,7 @@ char BSPACE = '\b'; /* characters written for flood */
char DOT = '.';
char *hostname;
int ident; /* process id to identify our packets */
int uid; /* cached uid for micro-optimization */
/* counters */
long npackets; /* max packets to transmit */
@ -201,6 +202,7 @@ main(argc, argv)
sockerrno = errno;
setuid(getuid());
uid = getuid();
preload = 0;
@ -671,7 +673,7 @@ pr_pack(buf, cc, from)
#endif
struct icmp *oicmp = (struct icmp *)(oip + 1);
if (((options & F_VERBOSE) && getuid() == 0) ||
if (((options & F_VERBOSE) && uid == 0) ||
(!(options & F_QUIET2) &&
(oip->ip_dst.s_addr ==
((struct sockaddr_in *)&whereto)->sin_addr.s_addr) &&
@ -1171,7 +1173,7 @@ usage(argv0)
argv0 = strrchr(argv0,'/') + 1;
fprintf(stderr,
"usage: %s [-QRadfnqrv] [-c count] [-i wait] [-l preload] "
"[-p pattern]\n\t\t[-s packetsize] "
"[-p pattern]\n [-s packetsize] "
"[host | [-L] [-I iface] [-T ttl] mcast-group]\n",
argv0);
exit(EX_USAGE);