diff options
Diffstat (limited to 'initd')
| -rw-r--r-- | initd/early.c | 106 | ||||
| -rw-r--r-- | initd/init.c | 121 | ||||
| -rw-r--r-- | initd/init.h | 32 | ||||
| -rw-r--r-- | initd/mkdev.c | 125 | ||||
| -rw-r--r-- | initd/preinit.c | 122 | ||||
| -rw-r--r-- | initd/zram.c | 128 |
6 files changed, 0 insertions, 634 deletions
diff --git a/initd/early.c b/initd/early.c deleted file mode 100644 index e87774f..0000000 --- a/initd/early.c +++ /dev/null @@ -1,106 +0,0 @@ -/* - * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org> - * Copyright (C) 2013 John Crispin <blogic@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 2.1 - * 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 <sys/mount.h> -#include <sys/types.h> -#include <sys/stat.h> - -#include <stdio.h> -#include <fcntl.h> -#include <unistd.h> -#include <stdlib.h> - -#include "init.h" -#include "../libc-compat.h" - -static void -early_dev(void) -{ - mkdev("*", 0600); - mknod("/dev/null", 0666, makedev(1, 3)); -} - -static void -early_console(const char *dev) -{ - struct stat s; - int dd; - - if (stat(dev, &s)) { - ERROR("Failed to stat %s\n", dev); - return; - } - - dd = open(dev, O_RDWR); - if (dd < 0) - dd = open("/dev/null", O_RDWR); - - dup2(dd, STDIN_FILENO); - dup2(dd, STDOUT_FILENO); - dup2(dd, STDERR_FILENO); - - if (dd != STDIN_FILENO && - dd != STDOUT_FILENO && - dd != STDERR_FILENO) - close(dd); - - fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK); -} - -static void -early_mounts(void) -{ - unsigned int oldumask = umask(0); - - mount("proc", "/proc", "proc", MS_NOATIME | MS_NODEV | MS_NOEXEC | MS_NOSUID, 0); - mount("sysfs", "/sys", "sysfs", MS_NOATIME | MS_NODEV | MS_NOEXEC | MS_NOSUID, 0); - mount("cgroup", "/sys/fs/cgroup", "cgroup", MS_NODEV | MS_NOEXEC | MS_NOSUID, 0); - mount("tmpfs", "/dev", "tmpfs", MS_NOATIME | MS_NOSUID, "mode=0755,size=512K"); - ignore(symlink("/tmp/shm", "/dev/shm")); - mkdir("/dev/pts", 0755); - mount("devpts", "/dev/pts", "devpts", MS_NOATIME | MS_NOEXEC | MS_NOSUID, "mode=600"); - early_dev(); - - early_console("/dev/console"); - if (mount_zram_on_tmp()) { - mount("tmpfs", "/tmp", "tmpfs", MS_NOSUID | MS_NODEV | MS_NOATIME, 0); - mkdir("/tmp/shm", 01777); - } else { - mkdir("/tmp/shm", 01777); - mount("tmpfs", "/tmp/shm", "tmpfs", MS_NOSUID | MS_NODEV | MS_NOATIME, - "mode=01777"); - } - mkdir("/tmp/run", 0777); - mkdir("/tmp/lock", 0777); - mkdir("/tmp/state", 0777); - umask(oldumask); -} - -static void -early_env(void) -{ - setenv("PATH", "/bin:/sbin:/usr/bin:/usr/sbin", 1); -} - -void -early(void) -{ - if (getpid() != 1) - return; - - early_mounts(); - early_env(); - - LOG("Console is alive\n"); -} diff --git a/initd/init.c b/initd/init.c deleted file mode 100644 index 9818c4f..0000000 --- a/initd/init.c +++ /dev/null @@ -1,121 +0,0 @@ -/* - * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org> - * Copyright (C) 2013 John Crispin <blogic@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 2.1 - * 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 <sys/wait.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/reboot.h> - -#include <libubox/uloop.h> -#include <libubus.h> - -#include <limits.h> -#include <stdlib.h> -#include <fcntl.h> -#include <getopt.h> -#include <libgen.h> -#include <regex.h> -#include <unistd.h> -#include <stdio.h> - -#include "../utils/utils.h" -#include "init.h" -#include "../watchdog.h" - -unsigned int debug = 0; - -static void -signal_shutdown(int signal, siginfo_t *siginfo, void *data) -{ - fprintf(stderr, "reboot\n"); - fflush(stderr); - sync(); - sleep(2); - reboot(RB_AUTOBOOT); - while (1) - ; -} - -static struct sigaction sa_shutdown = { - .sa_sigaction = signal_shutdown, - .sa_flags = SA_SIGINFO -}; - -static void -cmdline(void) -{ - char line[20]; - char* res; - long r; - - res = get_cmdline_val("init_debug", line, sizeof(line)); - if (res != NULL) { - r = strtol(line, NULL, 10); - if ((r != LONG_MIN) && (r != LONG_MAX)) - debug = (int) r; - } -} - -int -main(int argc, char **argv) -{ - pid_t pid; - - ulog_open(ULOG_KMSG, LOG_DAEMON, "init"); - - sigaction(SIGTERM, &sa_shutdown, NULL); - sigaction(SIGUSR1, &sa_shutdown, NULL); - sigaction(SIGUSR2, &sa_shutdown, NULL); - - early(); - cmdline(); - watchdog_init(1); - - pid = fork(); - if (!pid) { - char *kmod[] = { "/sbin/kmodloader", "/etc/modules-boot.d/", NULL }; - - if (debug < 3) { - int fd = open("/dev/null", O_RDWR); - - if (fd > -1) { - dup2(fd, STDIN_FILENO); - dup2(fd, STDOUT_FILENO); - dup2(fd, STDERR_FILENO); - if (fd > STDERR_FILENO) - close(fd); - } - } - execvp(kmod[0], kmod); - ERROR("Failed to start kmodloader\n"); - exit(-1); - } - if (pid <= 0) { - ERROR("Failed to start kmodloader instance\n"); - } else { - int i; - - for (i = 0; i < 120; i++) { - if (waitpid(pid, NULL, WNOHANG) > 0) - break; - sleep(1); - watchdog_ping(); - } - } - uloop_init(); - preinit(); - uloop_run(); - - return 0; -} diff --git a/initd/init.h b/initd/init.h deleted file mode 100644 index 274645b..0000000 --- a/initd/init.h +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (C) 2013 John Crispin <blogic@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 2.1 - * 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. - */ - -#ifndef _INIT_H__ -#define _INIT_H__ - -#include <errno.h> - -#include "../log.h" - -void preinit(void); -void early(void); -int mkdev(const char *progname, int progmode); - -#ifdef ZRAM_TMPFS -int mount_zram_on_tmp(void); -#else -static inline int mount_zram_on_tmp(void) { - return -ENOSYS; -} -#endif -#endif diff --git a/initd/mkdev.c b/initd/mkdev.c deleted file mode 100644 index e6d3d0c..0000000 --- a/initd/mkdev.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org> - * Copyright (C) 2013 John Crispin <blogic@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 2.1 - * 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. - */ - -#define _DEFAULT_SOURCE - -#include <sys/stat.h> -#include <sys/types.h> - -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <stdbool.h> -#include <dirent.h> -#include <limits.h> -#include <fnmatch.h> - -#include "init.h" - -static char **patterns; -static int n_patterns; -static char buf[PATH_MAX]; -static char buf2[PATH_MAX]; -static unsigned int mode = 0600; - -static bool find_pattern(const char *name) -{ - int i; - - for (i = 0; i < n_patterns; i++) - if (!fnmatch(patterns[i], name, 0)) - return true; - - return false; -} - -static void make_dev(const char *path, bool block, int major, int minor) -{ - unsigned int oldumask = umask(0); - unsigned int _mode = mode | (block ? S_IFBLK : S_IFCHR); - - DEBUG(4, "Creating %s device %s(%d,%d)\n", - block ? "block" : "character", - path, major, minor); - - mknod(path, _mode, makedev(major, minor)); - umask(oldumask); -} - -static void find_devs(bool block) -{ - char *path = block ? "/sys/dev/block" : "/sys/dev/char"; - struct dirent *dp; - DIR *dir; - - dir = opendir(path); - if (!dir) - return; - - path = buf2 + sprintf(buf2, "%s/", path); - while ((dp = readdir(dir)) != NULL) { - char *c; - int major = 0, minor = 0; - int len; - - if (dp->d_type != DT_LNK) - continue; - - if (sscanf(dp->d_name, "%d:%d", &major, &minor) != 2) - continue; - - strcpy(path, dp->d_name); - len = readlink(buf2, buf, sizeof(buf)); - if (len <= 0) - continue; - - buf[len] = 0; - if (!find_pattern(buf)) - continue; - - c = strrchr(buf, '/'); - if (!c) - continue; - - c++; - make_dev(c, block, major, minor); - } - closedir(dir); -} - -static char *add_pattern(const char *name) -{ - char *str = malloc(strlen(name) + 2); - - str[0] = '*'; - strcpy(str + 1, name); - return str; -} - -int mkdev(const char *name, int _mode) -{ - char *pattern; - - if (chdir("/dev")) - return 1; - - pattern = add_pattern(name); - patterns = &pattern; - mode = _mode; - n_patterns = 1; - find_devs(true); - find_devs(false); - return chdir("/"); -} diff --git a/initd/preinit.c b/initd/preinit.c deleted file mode 100644 index f38d8ef..0000000 --- a/initd/preinit.c +++ /dev/null @@ -1,122 +0,0 @@ -/* - * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org> - * Copyright (C) 2013 John Crispin <blogic@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License version 2.1 - * 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 <sys/stat.h> -#include <sys/types.h> -#include <sys/mount.h> - -#include <libubox/uloop.h> -#include <libubox/utils.h> -#include <libubus.h> - -#include <stdio.h> - -#include <unistd.h> - -#include "init.h" -#include "../watchdog.h" - -static struct uloop_process preinit_proc; -static struct uloop_process plugd_proc; - -static void -check_dbglvl(void) -{ - FILE *fp = fopen("/tmp/debug_level", "r"); - int lvl = 0; - - if (!fp) - return; - if (fscanf(fp, "%d", &lvl) == EOF) - ERROR("failed to read debug level\n"); - fclose(fp); - unlink("/tmp/debug_level"); - - if (lvl > 0 && lvl < 5) - debug = lvl; -} - -static void -spawn_procd(struct uloop_process *proc, int ret) -{ - char *wdt_fd = watchdog_fd(); - char *argv[] = { "/sbin/procd", NULL}; - struct stat s; - char dbg[2]; - - if (plugd_proc.pid > 0) - kill(plugd_proc.pid, SIGKILL); - - if (!stat("/tmp/sysupgrade", &s)) - while (true) - sleep(1); - - unsetenv("INITRAMFS"); - unsetenv("PREINIT"); - DEBUG(2, "Exec to real procd now\n"); - if (wdt_fd) - setenv("WDTFD", wdt_fd, 1); - check_dbglvl(); - if (debug > 0) { - snprintf(dbg, 2, "%d", debug); - setenv("DBGLVL", dbg, 1); - } - - execvp(argv[0], argv); -} - -static void -plugd_proc_cb(struct uloop_process *proc, int ret) -{ - proc->pid = 0; -} - -void -preinit(void) -{ - char *init[] = { "/bin/sh", "/etc/preinit", NULL }; - char *plug[] = { "/sbin/procd", "-h", "/etc/hotplug-preinit.json", NULL }; - - LOG("- preinit -\n"); - - plugd_proc.cb = plugd_proc_cb; - plugd_proc.pid = fork(); - if (!plugd_proc.pid) { - execvp(plug[0], plug); - ERROR("Failed to start plugd\n"); - exit(-1); - } - if (plugd_proc.pid <= 0) { - ERROR("Failed to start new plugd instance\n"); - return; - } - uloop_process_add(&plugd_proc); - - setenv("PREINIT", "1", 1); - - preinit_proc.cb = spawn_procd; - preinit_proc.pid = fork(); - if (!preinit_proc.pid) { - execvp(init[0], init); - ERROR("Failed to start preinit\n"); - exit(-1); - } - if (preinit_proc.pid <= 0) { - ERROR("Failed to start new preinit instance\n"); - return; - } - uloop_process_add(&preinit_proc); - - DEBUG(4, "Launched preinit instance, pid=%d\n", (int) preinit_proc.pid); -} diff --git a/initd/zram.c b/initd/zram.c deleted file mode 100644 index 49480af..0000000 --- a/initd/zram.c +++ /dev/null @@ -1,128 +0,0 @@ -#include <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <fcntl.h> - -#include <sys/utsname.h> -#include <sys/mount.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <sys/stat.h> - -#include "../log.h" - -#include "init.h" - -#define KB(x) (x * 1024) - -#define ZRAM_MOD_PATH "/lib/modules/%s/zram.ko" -#define EXT4_MOD_PATH "/lib/modules/%s/ext4.ko" - -static long -proc_meminfo(void) -{ - FILE *fp; - char line[256]; - char *key; - long val = KB(16); - - fp = fopen("/proc/meminfo", "r"); - if (fp == NULL) { - ERROR("Can't open /proc/meminfo: %s\n", strerror(errno)); - return errno; - } - - while (fgets(line, sizeof(line), fp)) { - key = strtok(line, ":"); - if (strcasecmp(key, "MemTotal")) - continue; - val = atol(strtok(NULL, " kB\n")); - break; - } - fclose(fp); - - if (val > KB(32)) - val = KB(32); - - return val; -} - -static int -early_insmod(char *module) -{ - pid_t pid = fork(); - - if (!pid) { - char *modprobe[] = { "/usr/sbin/modprobe", NULL, NULL }; - char *path; - struct utsname ver; - - uname(&ver); - path = alloca(sizeof(module) + strlen(ver.release) + 1); - sprintf(path, module, ver.release); - modprobe[1] = path; - execvp(modprobe[0], modprobe); - ERROR("Can't exec /usr/sbin/modprobe\n"); - exit(-1); - } - - if (pid <= 0) { - ERROR("Can't exec /usr/sbin/modprobe\n"); - return -1; - } else { - waitpid(pid, NULL, 0); - } - - return 0; -} - - -int -mount_zram_on_tmp(void) -{ - char *mkfs[] = { "/usr/sbin/mkfs.ext4", "-b", "4096", "-F", "-L", "TEMP", "-m", "0", "/dev/zram0", NULL }; - FILE *fp; - long zramsize; - pid_t pid; - int ret; - - if (early_insmod(ZRAM_MOD_PATH) || early_insmod(EXT4_MOD_PATH)) { - ERROR("failed to insmod zram support\n"); - return -1; - } - - mkdev("*", 0600); - - zramsize = proc_meminfo() / 2; - fp = fopen("/sys/block/zram0/disksize", "r+"); - if (fp == NULL) { - ERROR("Can't open /sys/block/zram0/disksize: %s\n", strerror(errno)); - return errno; - } - fprintf(fp, "%ld", KB(zramsize)); - fclose(fp); - - pid = fork(); - if (!pid) { - execvp(mkfs[0], mkfs); - ERROR("Can't exec /sbin/mkfs.ext4\n"); - exit(-1); - } else if (pid <= 0) { - ERROR("Can't exec /sbin/mkfs.ext4\n"); - return -1; - } else { - waitpid(pid, NULL, 0); - } - - ret = mount("/dev/zram0", "/tmp", "ext4", MS_NOSUID | MS_NODEV | MS_NOATIME, "errors=continue,noquota"); - if (ret < 0) { - ERROR("Can't mount /dev/zram0 on /tmp: %s\n", strerror(errno)); - return errno; - } - - LOG("Using up to %ld kB of RAM as ZRAM storage on /mnt\n", zramsize); - - return 0; -} |