cleanup packet length handling

[l2tpns.git] / util.c

diff --git a/util.c b/util.c
index dd0fbc3..34caadc 100644 (file)
--- a/util.c
+++ b/util.c
@@ -1,15 +1,21 @@
 /* Misc util functions */
 
-char const *cvs_id_util = "$Id: util.c,v 1.3 2004/09/02 04:18:07 fred_nerk Exp $";
-
-#include "l2tpns.h"
+char const *cvs_id_util = "$Id: util.c,v 1.4 2004/11/02 04:35:04 bodea Exp $";
 
+#include <unistd.h>
+#include <errno.h>
+#include <sched.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <string.h>
 #include <sys/mman.h>
 
+#include "l2tpns.h"
+#ifdef BGP
+#include "bgp.h"
+#endif
+
 char *inet_toa(unsigned long addr)
 {
        struct in_addr in;
@@ -27,3 +33,52 @@ void *shared_malloc(unsigned int size)
 
        return p;
 }
+
+extern int udpfd, tunfd, snoopfd, ifrfd, cluster_sockfd;
+extern int *radfds;
+
+pid_t fork_and_close()
+{
+       pid_t pid = fork();
+       int i;
+
+       if (pid)
+               return pid;
+
+       if (config->scheduler_fifo)
+       {
+               struct sched_param params = {0};
+               params.sched_priority = 0;
+               if (sched_setscheduler(0, SCHED_OTHER, &params))
+               {
+                       log(0, 0, 0, 0, "Error setting scheduler to OTHER after fork: %s\n", strerror(errno));
+                       log(0, 0, 0, 0, "This is probably really really bad.\n");
+               }
+       }
+
+       signal(SIGPIPE, SIG_DFL);
+       signal(SIGCHLD, SIG_DFL);
+       signal(SIGHUP, SIG_DFL);
+       signal(SIGUSR1, SIG_DFL);
+       signal(SIGQUIT, SIG_DFL);
+       signal(SIGKILL, SIG_DFL);
+       signal(SIGALRM, SIG_DFL);
+       signal(SIGTERM, SIG_DFL);
+
+       // Close sockets
+       if (udpfd) close(udpfd); udpfd = 0;
+       if (tunfd) close(tunfd); tunfd = 0;
+       if (snoopfd) close(snoopfd); snoopfd = 0;
+       for (i = 0; i < config->num_radfds; i++)
+               if (radfds[i]) close(radfds[i]);
+       if (ifrfd) close(ifrfd); ifrfd = 0;
+       if (cluster_sockfd) close(cluster_sockfd); cluster_sockfd = 0;
+       if (clifd) close(clifd); clifd = 0;
+#ifdef BGP
+       for (i = 0; i < BGP_NUM_PEERS; i++)
+               if (bgp_peers[i].sock != -1)
+                       close(bgp_peers[i].sock);
+#endif /* BGP */
+
+       return pid;
+}