X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/eb3a6cd62dc3b83c68ad174d4c439f5bbaa902e1..02fdf677415da6f1f3dd2fc7cb1fcd02f8d9ee08:/util.c

diff --git a/util.c b/util.c
index 22af256..20bcab8 100644
--- a/util.c
+++ b/util.c
@@ -1,18 +1,94 @@
 /* Misc util functions */
 
-char const *cvs_id_util = "$Id: util.c,v 1.2 2004/06/28 02:43:13 fred_nerk Exp $";
-
-#include "l2tpns.h"
+char const *cvs_id_util = "$Id: util.c,v 1.10 2005/01/25 04:19:07 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>
 
-char *inet_toa(unsigned long addr)
+#include "l2tpns.h"
+#ifdef BGP
+#include "bgp.h"
+#endif
+
+// format ipv4 addr as a dotted-quad; n chooses one of 4 static buffers
+// to use
+char *fmtaddr(in_addr_t addr, int n)
 {
+	static char addrs[4][16];
 	struct in_addr in;
-	memcpy(&in, &addr, sizeof(unsigned long));
-	return inet_ntoa(in);
+
+	if (n < 0 || n >= 4) return "";
+	in.s_addr = addr;
+	return strcpy(addrs[n], inet_ntoa(in));
+}
+
+void *shared_malloc(unsigned int size)
+{
+	void * p;
+	p = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0);
+
+	if (p == MAP_FAILED)
+		p = NULL;
+
+	return p;
 }
 
+extern int forked;
+extern int udpfd, controlfd, tunfd, snoopfd, ifrfd, ifr6fd, cluster_sockfd;
+extern int *radfds;
+
+pid_t fork_and_close()
+{
+	pid_t pid = fork();
+	int i;
+
+	if (pid)
+		return pid;
+
+	forked++;
+	if (config->scheduler_fifo)
+	{
+		struct sched_param params = {0};
+		params.sched_priority = 0;
+		if (sched_setscheduler(0, SCHED_OTHER, &params))
+		{
+			LOG(0, 0, 0, "Error setting scheduler to OTHER after fork: %s\n", strerror(errno));
+			LOG(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 (tunfd != -1)          close(tunfd);
+	if (udpfd != -1)          close(udpfd);
+	if (controlfd != -1)      close(controlfd);
+	if (snoopfd != -1)        close(snoopfd);
+	if (ifrfd != -1)          close(ifrfd);
+	if (ifr6fd != -1)         close(ifr6fd);
+	if (cluster_sockfd != -1) close(cluster_sockfd);
+	if (clifd != -1)          close(clifd);
+
+	for (i = 0; radfds && i < config->num_radfds; i++)
+		close(radfds[i]);
+#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;
+}