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Don't overflow our fd_set. This is not a full sync with KAME because there

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are a whole lot of other changes which may not be suitable for us.

Obtained from:	KAME
This commit is contained in:
Kris Kennaway 2000-10-08 08:02:35 +00:00
parent c9f7579521
commit 5088aa38a3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=66811
1 changed files with 11 additions and 9 deletions
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20
sbin/ping6/ping6.c
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@ -112,10 +112,7 @@ static const char rcsid[] =
#include <net/if.h>
#include <net/route.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/ip6.h>
#include <netinet/icmp6.h>
#include <arpa/inet.h>
@ -268,7 +265,8 @@ main(argc, argv)
struct sockaddr_in6 from;
struct timeval timeout;
struct addrinfo hints;
fd_set fdset;
fd_set *fdmaskp;
int fdmasks;
register int cc, i;
int ch, fromlen, hold, packlen, preload, optval, ret_ga;
u_char *datap, *packet;
@ -870,9 +868,10 @@ main(argc, argv)
(void)setitimer(ITIMER_REAL, &itimer, NULL);
}
FD_ZERO(&fdset);
timeout.tv_sec = 0;
timeout.tv_usec = 10000;
fdmasks = howmany(s+1, NFDBITS);
if ((fdmaskp = malloc(fdmasks)) == NULL)
err(1, "malloc");
for (;;) {
struct msghdr m;
struct cmsghdr *cm;
@ -881,8 +880,11 @@ main(argc, argv)
if (options & F_FLOOD) {
pinger();
FD_SET(s, &fdset);
if (select(s + 1, &fdset, NULL, NULL, &timeout) < 1)
timeout.tv_sec = 0;
timeout.tv_usec = 10000;
memset(fdmaskp, 0, fdmasks);
FD_SET(s, fdmaskp);
if (select(s + 1, fdmaskp, NULL, NULL, &timeout) < 1)
continue;
}
fromlen = sizeof(from);