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server.c: When 'securenets' (actually TCP_WRAPPERS) is enabled, don't

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syslog connections unless they were rejected. This helps save wear and
tear on the syslog facility in large networks with many clienst systems.

yp_svc.c: Be a little smarter about using sigaction() -- set the SA_RESTART
flag.

svc_run: Be doubly paranoid about killing off child processes. Do a flag
chack and a pid check before letting child 'threads' self-destruct.
This commit is contained in:
Bill Paul 1995-07-14 01:56:51 +00:00
parent 5d81e553a2
commit 2c9d7bb779
3 changed files with 10 additions and 2 deletions
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2
gnu/usr.sbin/ypserv/server.c
View File

@ -152,7 +152,7 @@ static int is_valid_host(struct sockaddr_in *sin)
inet_ntoa(sin->sin_addr),
"");
if (sin->sin_addr.s_addr != oldaddr || status != oldstatus ) {
if (!status && (sin->sin_addr.s_addr != oldaddr || status != oldstatus)) {
syslog(status?allow_severity:deny_severity,
"%sconnect from %s\n",status?"":"refused ",
h?h:inet_ntoa(sin->sin_addr));

6
gnu/usr.sbin/ypserv/svc_run.c
View File

@ -55,6 +55,10 @@ my_svc_run()
#endif /* def FD_SETSIZE */
extern int errno;
extern int forked;
int pid;
/* Establish the identity of the parent ypserv process. */
pid = getpid();
for (;;) {
#ifdef FD_SETSIZE
@ -74,7 +78,7 @@ my_svc_run()
continue;
default:
svc_getreqset(&readfds);
if (forked)
if (forked && pid != getpid())
exit(0);
}
}

4
gnu/usr.sbin/ypserv/yp_svc.c
View File

@ -322,8 +322,12 @@ int main(int argc, char **argv)
* Ignore SIGPIPEs. They can hurt us if someone does a ypcat
* and then hits CTRL-C before it terminates.
*/
sigaction(SIGPIPE, NULL, &sa);
sa.sa_handler = SIG_IGN;
sa.sa_flags |= SA_RESTART;
sigaction(SIGPIPE, &sa, NULL);
sigaction(SIGCHLD, NULL, &sa);
sa.sa_flags |= SA_RESTART;
sa.sa_handler = reapchild;
sigaction(SIGCHLD, &sa, NULL);