X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=main.c;h=bbae97b72238e1333b3c3ced59bcb9ac30b75bd4;hp=5770782f1646498c29be6efd3d45c67be3491f63;hb=89ccd8055bb6c330bd9f883e37bbf36078d5d948;hpb=41842d3f91733786cb4d2bcdc6ca0c3a1a1c594b;ds=sidebyside diff --git a/main.c b/main.c index 5770782..bbae97b 100644 --- a/main.c +++ b/main.c @@ -1,41 +1,227 @@ +/* + * netifd - network interface daemon + * Copyright (C) 2012 Felix Fietkau + * + * 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 #include #include #include -#include +#include +#include +#include #include "netifd.h" #include "ubus.h" #include "config.h" #include "system.h" #include "interface.h" +#include "wireless.h" +#include "proto.h" 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 void netifd_do_restart(struct uloop_timeout *timeout) +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) { - execvp(global_argv[0], global_argv); + list_del(&proc->list); + ustream_free(&proc->log.stream); + close(proc->log.fd.fd); } -static void netifd_do_reload(struct uloop_timeout *timeout) +void +netifd_log_message(int priority, const char *format, ...) { - config_init_interfaces(NULL); + 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 struct uloop_timeout main_timer; +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); + } + + if (pid < 0) + goto error; + + 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); +} void netifd_reload(void) { - main_timer.cb = netifd_do_reload; - uloop_timeout_set(&main_timer, 100); + config_init_all(); } void netifd_restart(void) { - main_timer.cb = netifd_do_restart; + static struct uloop_timeout main_timer = { + .cb = netifd_do_restart + }; + interface_set_down(NULL); uloop_timeout_set(&main_timer, 1000); } @@ -47,14 +233,49 @@ static int usage(const char *progname) " -d : Mask for debug messages\n" " -s : Path to the ubus socket\n" " -p : Path to netifd addons (default: %s)\n" + " -c : Path to UCI configuration\n" " -h : Path to the hotplug script\n" " -r : Path to resolv.conf\n" + " -l : 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); + "\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; @@ -62,7 +283,7 @@ int main(int argc, char **argv) global_argv = argv; - while ((ch = getopt(argc, argv, "d:s:p:h:r:")) != -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); @@ -73,32 +294,56 @@ int main(int argc, char **argv) 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 (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; } + proto_shell_init(); + wireless_init(); + if (system_init()) { fprintf(stderr, "Failed to initialize system control\n"); return 1; } - config_init_interfaces(NULL); + config_init_all(); uloop_run(); + netifd_kill_processes(); netifd_ubus_done(); + if (use_syslog) + closelog(); + return 0; }