diff options
Diffstat (limited to 'networking/udhcp/dhcpc.c')
| -rw-r--r-- | networking/udhcp/dhcpc.c | 51 |
1 files changed, 23 insertions, 28 deletions
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c index 55664ab..a180cc5 100644 --- a/networking/udhcp/dhcpc.c +++ b/networking/udhcp/dhcpc.c @@ -38,9 +38,11 @@ #include "dhcpc.h" #include "options.h" #include "clientpacket.h" +#include "clientsocket.h" #include "script.h" #include "socket.h" #include "common.h" +#include "signalpipe.h" static int state; static unsigned long requested_ip; /* = 0 */ @@ -54,12 +56,6 @@ static int fd = -1; #define LISTEN_RAW 2 static int listen_mode; -#ifdef CONFIG_INSTALL_NO_USR -#define DEFAULT_SCRIPT "/share/udhcpc/default.script" -#else -#define DEFAULT_SCRIPT "/usr/share/udhcpc/default.script" -#endif - struct client_config_t client_config = { /* Default options. */ abort_if_no_lease: 0, @@ -78,7 +74,7 @@ struct client_config_t client_config = { #ifndef IN_BUSYBOX static void __attribute__ ((noreturn)) show_usage(void) { - printf( + printf( "Usage: udhcpc [OPTIONS]\n\n" " -c, --clientid=CLIENTID Client identifier\n" " -H, --hostname=HOSTNAME Client hostname\n" @@ -95,8 +91,8 @@ static void __attribute__ ((noreturn)) show_usage(void) " -s, --script=file Run file at dhcp events (default:\n" " " DEFAULT_SCRIPT ")\n" " -v, --version Display version\n" - ); - exit(0); + ); + exit(0); } #else #define show_usage bb_show_usage @@ -177,7 +173,11 @@ static void client_background(void) } +#ifdef COMBINED_BINARY int udhcpc_main(int argc, char *argv[]) +#else +int main(int argc, char *argv[]) +#endif { unsigned char *temp, *message; unsigned long t1 = 0, t2 = 0, xid = 0; @@ -258,18 +258,20 @@ int udhcpc_main(int argc, char *argv[]) client_config.script = optarg; break; case 'v': - bb_error_msg("version %s\n", VERSION); - return(0); + printf("udhcpcd, version %s\n\n", VERSION); + return 0; break; default: show_usage(); } } - start_log("client"); + /* Start the log, sanitize fd's, and write a pid file */ + start_log_and_pid("udhcpc", client_config.pidfile); + if (read_interface(client_config.interface, &client_config.ifindex, NULL, client_config.arp) < 0) - return(1); + return 1; if (!client_config.clientid) { client_config.clientid = xmalloc(6 + 3); @@ -279,8 +281,8 @@ int udhcpc_main(int argc, char *argv[]) memcpy(client_config.clientid + 3, client_config.arp, 6); } - /* setup signal handlers */ - udhcp_set_signal_pipe(SIGUSR2); + /* setup the signal pipe */ + udhcp_sp_setup(); state = INIT_SELECTING; run_script(NULL, "deconfig"); @@ -290,7 +292,6 @@ int udhcpc_main(int argc, char *argv[]) tv.tv_sec = timeout - time(0); tv.tv_usec = 0; - FD_ZERO(&rfds); if (listen_mode != LISTEN_NONE && fd < 0) { if (listen_mode == LISTEN_KERNEL) @@ -299,15 +300,13 @@ int udhcpc_main(int argc, char *argv[]) fd = raw_socket(client_config.ifindex); if (fd < 0) { LOG(LOG_ERR, "FATAL: couldn't listen on socket, %m"); - return(0); + return 0; } } - if (fd >= 0) FD_SET(fd, &rfds); - FD_SET(udhcp_signal_pipe[0], &rfds); + max_fd = udhcp_sp_fd_set(&rfds, fd); if (tv.tv_sec > 0) { DEBUG(LOG_INFO, "Waiting on select..."); - max_fd = udhcp_signal_pipe[0] > fd ? udhcp_signal_pipe[0] : fd; retval = select(max_fd + 1, &rfds, NULL, NULL, &tv); } else retval = 0; /* If we already timed out, fall through */ @@ -332,7 +331,7 @@ int udhcpc_main(int argc, char *argv[]) client_background(); } else if (client_config.abort_if_no_lease) { LOG(LOG_INFO, "No lease, failing."); - return(1); + return 1; } /* wait to try again */ packet_num = 0; @@ -474,7 +473,7 @@ int udhcpc_main(int argc, char *argv[]) state = BOUND; change_mode(LISTEN_NONE); if (client_config.quit_after_lease) - return(0); + return 0; if (!client_config.foreground) client_background(); @@ -494,11 +493,7 @@ int udhcpc_main(int argc, char *argv[]) break; /* case BOUND, RELEASED: - ignore all packets */ } - } else if (retval > 0 && FD_ISSET(udhcp_signal_pipe[0], &rfds)) { - if (read(udhcp_signal_pipe[0], &sig, sizeof(sig)) < 0) { - DEBUG(LOG_ERR, "Could not read signal: %m"); - continue; /* probably just EINTR */ - } + } else if (retval > 0 && (sig = udhcp_sp_read(&rfds))) { switch (sig) { case SIGUSR1: perform_renew(); @@ -508,7 +503,7 @@ int udhcpc_main(int argc, char *argv[]) break; case SIGTERM: LOG(LOG_INFO, "Received SIGTERM"); - return(0); + return 0; } } else if (retval == -1 && errno == EINTR) { /* a signal was caught */ |