+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <syslog.h>
#include "netifd.h"
#include "ubus.h"
#include "config.h"
+#include "system.h"
+#include "interface.h"
+#include "wireless.h"
+#include "proto.h"
-const char *main_path = ".";
+unsigned int debug_mask = 0;
+const char *main_path = DEFAULT_MAIN_PATH;
+const char *config_path = DEFAULT_CONFIG_PATH;
+const char *resolv_conf = DEFAULT_RESOLV_CONF;
static char **global_argv;
+static struct list_head process_list = LIST_HEAD_INIT(process_list);
+
+#define DEFAULT_LOG_LEVEL L_NOTICE
+
+static int log_level = DEFAULT_LOG_LEVEL;
+static const int log_class[] = {
+ [L_CRIT] = LOG_CRIT,
+ [L_WARNING] = LOG_WARNING,
+ [L_NOTICE] = LOG_NOTICE,
+ [L_INFO] = LOG_INFO,
+ [L_DEBUG] = LOG_DEBUG
+};
+
+#ifdef DUMMY_MODE
+#define use_syslog false
+#else
+static bool use_syslog = true;
+#endif
+
+
+static void
+netifd_delete_process(struct netifd_process *proc)
+{
+ list_del(&proc->list);
+ ustream_free(&proc->log.stream);
+ close(proc->log.fd.fd);
+}
+
+void
+netifd_log_message(int priority, const char *format, ...)
+{
+ va_list vl;
+
+ if (priority > log_level)
+ return;
+
+ va_start(vl, format);
+ if (use_syslog)
+ vsyslog(log_class[priority], format, vl);
+ else
+ vfprintf(stderr, format, vl);
+ va_end(vl);
+}
+
+static void
+netifd_process_log_read_cb(struct ustream *s, int bytes)
+{
+ struct netifd_process *proc;
+ const char *log_prefix;
+ char *data;
+ int len = 0;
+
+ proc = container_of(s, struct netifd_process, log.stream);
+ log_prefix = proc->log_prefix;
+ if (!log_prefix)
+ log_prefix = "process";
+
+ do {
+ char *newline;
+
+ data = ustream_get_read_buf(s, &len);
+ if (!len)
+ break;
+
+ newline = strchr(data, '\n');
+
+ if (proc->log_overflow) {
+ if (newline) {
+ len = newline + 1 - data;
+ proc->log_overflow = false;
+ }
+ } else if (newline) {
+ *newline = 0;
+ len = newline + 1 - data;
+ netifd_log_message(L_NOTICE, "%s (%d): %s\n",
+ log_prefix, proc->uloop.pid, data);
+ } else if (len == s->r.buffer_len) {
+ netifd_log_message(L_NOTICE, "%s (%d): %s [...]\n",
+ log_prefix, proc->uloop.pid, data);
+ proc->log_overflow = true;
+ } else
+ break;
+
+ ustream_consume(s, len);
+ } while (1);
+}
+
+static void
+netifd_process_cb(struct uloop_process *proc, int ret)
+{
+ struct netifd_process *np;
+ np = container_of(proc, struct netifd_process, uloop);
+
+ while (ustream_poll(&np->log.stream));
+ netifd_delete_process(np);
+ return np->cb(np, ret);
+}
+
+int
+netifd_start_process(const char **argv, char **env, struct netifd_process *proc)
+{
+ int pfds[2];
+ int pid;
+
+ netifd_kill_process(proc);
+
+ if (pipe(pfds) < 0)
+ return -1;
+
+ if ((pid = fork()) < 0)
+ goto error;
+
+ if (!pid) {
+ int i;
+
+ if (env) {
+ while (*env) {
+ putenv(*env);
+ env++;
+ }
+ }
+ if (proc->dir_fd >= 0)
+ if (fchdir(proc->dir_fd)) {}
+
+ close(pfds[0]);
+
+ for (i = 0; i <= 2; i++) {
+ if (pfds[1] == i)
+ continue;
+
+ dup2(pfds[1], i);
+ }
+
+ if (pfds[1] > 2)
+ close(pfds[1]);
+
+ execvp(argv[0], (char **) argv);
+ exit(127);
+ }
+
+ close(pfds[1]);
+ proc->uloop.cb = netifd_process_cb;
+ proc->uloop.pid = pid;
+ uloop_process_add(&proc->uloop);
+ list_add_tail(&proc->list, &process_list);
+
+ system_fd_set_cloexec(pfds[0]);
+ proc->log.stream.string_data = true;
+ proc->log.stream.notify_read = netifd_process_log_read_cb;
+ ustream_fd_init(&proc->log, pfds[0]);
+
+ return 0;
+
+error:
+ close(pfds[0]);
+ close(pfds[1]);
+ return -1;
+}
+
+void
+netifd_kill_process(struct netifd_process *proc)
+{
+ if (!proc->uloop.pending)
+ return;
+
+ kill(proc->uloop.pid, SIGKILL);
+ uloop_process_delete(&proc->uloop);
+ netifd_delete_process(proc);
+}
+
static void netifd_do_restart(struct uloop_timeout *timeout)
{
execvp(global_argv[0], global_argv);
}
-static struct uloop_timeout restart_timer = {
- .cb = netifd_do_restart,
-};
+int netifd_reload(void)
+{
+ return config_init_all();
+}
void netifd_restart(void)
{
- uloop_timeout_set(&restart_timer, 1000);
+ static struct uloop_timeout main_timer = {
+ .cb = netifd_do_restart
+ };
+
+ interface_set_down(NULL);
+ uloop_timeout_set(&main_timer, 1000);
}
static int usage(const char *progname)
{
fprintf(stderr, "Usage: %s [options]\n"
"Options:\n"
+ " -d <mask>: Mask for debug messages\n"
" -s <path>: Path to the ubus socket\n"
" -p <path>: Path to netifd addons (default: %s)\n"
- "\n", progname, main_path);
+ " -c <path>: Path to UCI configuration\n"
+ " -h <path>: Path to the hotplug script\n"
+ " -r <path>: Path to resolv.conf\n"
+ " -l <level>: Log output level (default: %d)\n"
+ " -S: Use stderr instead of syslog for log messages\n"
+ " (default: "DEFAULT_HOTPLUG_PATH")\n"
+ "\n", progname, main_path, DEFAULT_LOG_LEVEL);
return 1;
}
+static void
+netifd_handle_signal(int signo)
+{
+ uloop_end();
+}
+
+static void
+netifd_setup_signals(void)
+{
+ struct sigaction s;
+
+ memset(&s, 0, sizeof(s));
+ s.sa_handler = netifd_handle_signal;
+ s.sa_flags = 0;
+ sigaction(SIGINT, &s, NULL);
+ sigaction(SIGTERM, &s, NULL);
+ sigaction(SIGUSR1, &s, NULL);
+ sigaction(SIGUSR2, &s, NULL);
+
+ s.sa_handler = SIG_IGN;
+ sigaction(SIGPIPE, &s, NULL);
+}
+
+static void
+netifd_kill_processes(void)
+{
+ struct netifd_process *proc, *tmp;
+
+ list_for_each_entry_safe(proc, tmp, &process_list, list)
+ netifd_kill_process(proc);
+}
+
int main(int argc, char **argv)
{
const char *socket = NULL;
global_argv = argv;
- while ((ch = getopt(argc, argv, "s:")) != -1) {
+ while ((ch = getopt(argc, argv, "d:s:p:c:h:r:l:S")) != -1) {
switch(ch) {
+ case 'd':
+ debug_mask = strtoul(optarg, NULL, 0);
+ break;
case 's':
socket = optarg;
break;
case 'p':
main_path = optarg;
break;
+ case 'c':
+ config_path = optarg;
+ break;
+ case 'h':
+ hotplug_cmd_path = optarg;
+ break;
+ case 'r':
+ resolv_conf = optarg;
+ break;
+ case 'l':
+ log_level = atoi(optarg);
+ if (log_level >= ARRAY_SIZE(log_class))
+ log_level = ARRAY_SIZE(log_class) - 1;
+ break;
+#ifndef DUMMY_MODE
+ case 'S':
+ use_syslog = false;
+ break;
+#endif
default:
return usage(argv[0]);
}
}
- if (netifd_ubus_init(NULL) < 0) {
+ if (use_syslog)
+ openlog("netifd", 0, LOG_DAEMON);
+
+ netifd_setup_signals();
+ if (netifd_ubus_init(socket) < 0) {
fprintf(stderr, "Failed to connect to ubus\n");
return 1;
}
- config_init_interfaces(NULL);
+ proto_shell_init();
+ wireless_init();
+
+ if (system_init()) {
+ fprintf(stderr, "Failed to initialize system control\n");
+ return 1;
+ }
+
+ config_init_all();
uloop_run();
+ netifd_kill_processes();
netifd_ubus_done();
+ if (use_syslog)
+ closelog();
+
return 0;
}
projects / project / netifd.git / blobdiff