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from select(2):

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Any of readfds, writefds, and exceptfds may be given as nil
	pointers if no descriptors are of interest.

neither wfds nor efds were of interest so now they are nil.

also, do a little better then making an educated guess for nfds.
This commit is contained in:
Bill Fumerola 2002-01-20 12:13:28 +00:00
parent a353e14e75
commit 955052cf21
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=89583
1 changed files with 9 additions and 3 deletions
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12
sbin/nos-tun/nos-tun.c
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@ -251,8 +251,9 @@ int main (int argc, char **argv)
char buf[0x2000]; /* Packets buffer */
struct ip *ip = (struct ip *)buf;
fd_set rfds, wfds, efds; /* File descriptors for select() */
fd_set rfds; /* File descriptors for select() */
int nfds; /* Return from select() */
int lastfd; /* highest fd we care about */
while ((c = getopt(argc, argv, "d:s:t:p:")) != -1) {
@ -335,12 +336,17 @@ int main (int argc, char **argv)
(void)signal(SIGINT,Finish);
(void)signal(SIGTERM,Finish);
if (tun > net)
lastfd = tun;
else
lastfd = net;
for (;;) {
/* Set file descriptors for select() */
FD_ZERO(&rfds); FD_ZERO(&wfds); FD_ZERO(&efds);
FD_ZERO(&rfds);
FD_SET(tun,&rfds); FD_SET(net,&rfds);
nfds = select(net+10,&rfds,&wfds,&efds,NULL);
nfds = select(lastfd+1,&rfds,NULL,NULL,NULL);
if(nfds < 0) {
syslog(LOG_ERR,"interrupted select");
close(net);