assorted static vars removal

function                                             old     new   delta
tcpudpsvd_main                                      1829    1839     +10
update_status                                        567     569      +2
sigterm                                                1       -      -1
.........
dhcprelay_signal_handler                               8       -      -8
nfs_strerror                                          60      49     -11
singlemount                                         4579    4564     -15
static.p                                              16       -     -16
svstatus                                              20       -     -20
dhcprelay_xid_list                                    32       -     -32
runsv_main                                          1785    1746     -39
static.buf                                            74      28     -46
svd                                                   56       -     -56
dhcprelay_main                                      1141    1080     -61
------------------------------------------------------------------------------
(add/remove: 0/20 grow/shrink: 2/10 up/down: 12/-386)        Total: -374 bytes

1 files changed, 20 insertions, 43 deletions

diff --git a/networking/udhcp/dhcprelay.c b/networking/udhcp/dhcprelay.c
index 3e1758d..08dc23f 100644
--- a/networking/udhcp/dhcprelay.c
+++ b/networking/udhcp/dhcprelay.c
@@ -19,16 +19,16 @@
 #define MAX_LIFETIME 2*60 /* lifetime of an xid entry in sec. */
 #define MAX_INTERFACES 9
 
-
 /* This list holds information about clients. The xid_* functions manipulate this list. */
-static struct xid_item {
+struct xid_item {
+	time_t timestamp;
+	int client;
 	uint32_t xid;
 	struct sockaddr_in ip;
-	int client;
-	time_t timestamp;
 	struct xid_item *next;
-} dhcprelay_xid_list = {0, {0}, 0, 0, NULL};
+};
 
+#define dhcprelay_xid_list (*(struct xid_item*)&bb_common_bufsiz1)
 
 static struct xid_item *xid_add(uint32_t xid, struct sockaddr_in *ip, int client)
 {
@@ -114,17 +114,6 @@ static int get_dhcp_packet_type(struct dhcpMessage *p)
 }
 
 /**
- * signal_handler - handles signals ;-)
- * sig - sent signal
- */
-static smallint dhcprelay_stopflag;
-
-static void dhcprelay_signal_handler(int sig)
-{
-	dhcprelay_stopflag = 1;
-}
-
-/**
  * get_client_devices - parses the devices list
  * dev_list - comma separated list of devices
  * returns array
@@ -160,27 +149,23 @@ static char **get_client_devices(char *dev_list, int *client_number)
 }
 
 
-/* Creates listen sockets (in fds) and returns the number allocated. */
+/* Creates listen sockets (in fds) and returns numerically max fd. */
 static int init_sockets(char **client, int num_clients,
-			char *server, int *fds, int *max_socket)
+			char *server, int *fds)
 {
-	int i;
+	int i, n;
 
 	/* talk to real server on bootps */
 	fds[0] = listen_socket(/*INADDR_ANY,*/ 67, server);
-	*max_socket = fds[0];
-
-	/* array starts at 1 since server is 0 */
-	num_clients++;
+	n = fds[0];
 
 	for (i = 1; i < num_clients; i++) {
 		/* listen for clients on bootps */
 		fds[i] = listen_socket(/*NADDR_ANY,*/ 67, client[i-1]);
-		if (fds[i] > *max_socket)
-			*max_socket = fds[i];
+		if (fds[i] > n)
+			n = fds[i];
 	}
-
-	return i;
+	return n;
 }
 
 
@@ -253,6 +238,8 @@ static void pass_back(struct dhcpMessage *p, int packet_len, int *fds)
 }
 
 static void dhcprelay_loop(int *fds, int num_sockets, int max_socket, char **clients,
+		struct sockaddr_in *server_addr, uint32_t gw_ip) ATTRIBUTE_NORETURN;
+static void dhcprelay_loop(int *fds, int num_sockets, int max_socket, char **clients,
 		struct sockaddr_in *server_addr, uint32_t gw_ip)
 {
 	struct dhcpMessage dhcp_msg;
@@ -263,7 +250,7 @@ static void dhcprelay_loop(int *fds, int num_sockets, int max_socket, char **cli
 	struct timeval tv;
 	int i;
 
-	while (!dhcprelay_stopflag) {
+	while (1) {
 		FD_ZERO(&rfds);
 		for (i = 0; i < num_sockets; i++)
 			FD_SET(fds[i], &rfds);
@@ -298,7 +285,7 @@ static void dhcprelay_loop(int *fds, int num_sockets, int max_socket, char **cli
 int dhcprelay_main(int argc, char **argv);
 int dhcprelay_main(int argc, char **argv)
 {
-	int i, num_sockets, max_socket, fds[MAX_INTERFACES];
+	int num_sockets, max_socket, fds[MAX_INTERFACES];
 	uint32_t gw_ip;
 	char **clients;
 	struct sockaddr_in server_addr;
@@ -316,23 +303,13 @@ int dhcprelay_main(int argc, char **argv)
 	clients = get_client_devices(argv[1], &num_sockets);
 	if (!clients) return 0;
 
-	signal(SIGTERM, dhcprelay_signal_handler);
-	signal(SIGQUIT, dhcprelay_signal_handler);
-	signal(SIGINT, dhcprelay_signal_handler);
-
-	num_sockets = init_sockets(clients, num_sockets, argv[2], fds, &max_socket);
+	num_sockets++; /* for server socket at fds[0] */
+	max_socket = init_sockets(clients, num_sockets, argv[2], fds);
 
 	if (read_interface(argv[2], NULL, &gw_ip, NULL))
 		return 1;
 
+	/* doesn't return */
 	dhcprelay_loop(fds, num_sockets, max_socket, clients, &server_addr, gw_ip);
-
-	if (ENABLE_FEATURE_CLEAN_UP) {
-		for (i = 0; i < num_sockets; i++) {
-			close(fds[i]);
-			free(clients[i]);
-		}
-	}
-
-	return 0;
+	/* return 0; - not reached */
 }