diff options
Diffstat (limited to 'init/init.c')
| -rw-r--r-- | init/init.c | 989 |
1 files changed, 0 insertions, 989 deletions
diff --git a/init/init.c b/init/init.c deleted file mode 100644 index b8b4f4037..000000000 --- a/init/init.c +++ /dev/null @@ -1,989 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include <ctype.h> -#include <signal.h> -#include <sys/wait.h> -#include <sys/mount.h> -#include <sys/stat.h> -#include <sys/poll.h> -#include <time.h> -#include <errno.h> -#include <stdarg.h> -#include <mtd/mtd-user.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/un.h> -#include <sys/reboot.h> - -#include <cutils/sockets.h> -#include <termios.h> -#include <linux/kd.h> -#include <linux/keychord.h> - -#include <sys/system_properties.h> - -#include "devices.h" -#include "init.h" -#include "property_service.h" -#include "bootchart.h" - -static int property_triggers_enabled = 0; - -#if BOOTCHART -static int bootchart_count; -#endif - -static char console[32]; -static char serialno[32]; -static char bootmode[32]; -static char baseband[32]; -static char carrier[32]; -static char bootloader[32]; -static char hardware[32]; -static unsigned revision = 0; -static char qemu[32]; -static struct input_keychord *keychords = 0; -static int keychords_count = 0; -static int keychords_length = 0; - -static void drain_action_queue(void); - -static void notify_service_state(const char *name, const char *state) -{ - char pname[PROP_NAME_MAX]; - int len = strlen(name); - if ((len + 10) > PROP_NAME_MAX) - return; - snprintf(pname, sizeof(pname), "init.svc.%s", name); - property_set(pname, state); -} - -static int have_console; -static char *console_name = "/dev/console"; -static time_t process_needs_restart; - -static const char *ENV[32]; - -/* add_environment - add "key=value" to the current environment */ -int add_environment(const char *key, const char *val) -{ - int n; - - for (n = 0; n < 31; n++) { - if (!ENV[n]) { - size_t len = strlen(key) + strlen(val) + 2; - char *entry = malloc(len); - snprintf(entry, len, "%s=%s", key, val); - ENV[n] = entry; - return 0; - } - } - - return 1; -} - -static void zap_stdio(void) -{ - int fd; - fd = open("/dev/null", O_RDWR); - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - close(fd); -} - -static void open_console() -{ - int fd; - if ((fd = open(console_name, O_RDWR)) < 0) { - fd = open("/dev/null", O_RDWR); - } - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - close(fd); -} - -/* - * gettime() - returns the time in seconds of the system's monotonic clock or - * zero on error. - */ -static time_t gettime(void) -{ - struct timespec ts; - int ret; - - ret = clock_gettime(CLOCK_MONOTONIC, &ts); - if (ret < 0) { - ERROR("clock_gettime(CLOCK_MONOTONIC) failed: %s\n", strerror(errno)); - return 0; - } - - return ts.tv_sec; -} - -static void publish_socket(const char *name, int fd) -{ - char key[64] = ANDROID_SOCKET_ENV_PREFIX; - char val[64]; - - strlcpy(key + sizeof(ANDROID_SOCKET_ENV_PREFIX) - 1, - name, - sizeof(key) - sizeof(ANDROID_SOCKET_ENV_PREFIX)); - snprintf(val, sizeof(val), "%d", fd); - add_environment(key, val); - - /* make sure we don't close-on-exec */ - fcntl(fd, F_SETFD, 0); -} - -void service_start(struct service *svc) -{ - struct stat s; - pid_t pid; - int needs_console; - int n; - - /* starting a service removes it from the disabled - * state and immediately takes it out of the restarting - * state if it was in there - */ - svc->flags &= (~(SVC_DISABLED|SVC_RESTARTING)); - svc->time_started = 0; - - /* running processes require no additional work -- if - * they're in the process of exiting, we've ensured - * that they will immediately restart on exit, unless - * they are ONESHOT - */ - if (svc->flags & SVC_RUNNING) { - return; - } - - needs_console = (svc->flags & SVC_CONSOLE) ? 1 : 0; - if (needs_console && (!have_console)) { - ERROR("service '%s' requires console\n", svc->name); - svc->flags |= SVC_DISABLED; - return; - } - - if (stat(svc->args[0], &s) != 0) { - ERROR("cannot find '%s', disabling '%s'\n", svc->args[0], svc->name); - svc->flags |= SVC_DISABLED; - return; - } - - NOTICE("starting '%s'\n", svc->name); - - pid = fork(); - - if (pid == 0) { - struct socketinfo *si; - struct svcenvinfo *ei; - char tmp[32]; - int fd, sz; - - get_property_workspace(&fd, &sz); - sprintf(tmp, "%d,%d", dup(fd), sz); - add_environment("ANDROID_PROPERTY_WORKSPACE", tmp); - - for (ei = svc->envvars; ei; ei = ei->next) - add_environment(ei->name, ei->value); - - for (si = svc->sockets; si; si = si->next) { - int s = create_socket(si->name, - !strcmp(si->type, "dgram") ? - SOCK_DGRAM : SOCK_STREAM, - si->perm, si->uid, si->gid); - if (s >= 0) { - publish_socket(si->name, s); - } - } - - if (needs_console) { - setsid(); - open_console(); - } else { - zap_stdio(); - } - -#if 0 - for (n = 0; svc->args[n]; n++) { - INFO("args[%d] = '%s'\n", n, svc->args[n]); - } - for (n = 0; ENV[n]; n++) { - INFO("env[%d] = '%s'\n", n, ENV[n]); - } -#endif - - setpgid(0, getpid()); - - /* as requested, set our gid, supplemental gids, and uid */ - if (svc->gid) { - setgid(svc->gid); - } - if (svc->nr_supp_gids) { - setgroups(svc->nr_supp_gids, svc->supp_gids); - } - if (svc->uid) { - setuid(svc->uid); - } - - execve(svc->args[0], (char**) svc->args, (char**) ENV); - _exit(127); - } - - if (pid < 0) { - ERROR("failed to start '%s'\n", svc->name); - svc->pid = 0; - return; - } - - svc->time_started = gettime(); - svc->pid = pid; - svc->flags |= SVC_RUNNING; - - notify_service_state(svc->name, "running"); -} - -void service_stop(struct service *svc) -{ - /* we are no longer running, nor should we - * attempt to restart - */ - svc->flags &= (~(SVC_RUNNING|SVC_RESTARTING)); - - /* if the service has not yet started, prevent - * it from auto-starting with its class - */ - svc->flags |= SVC_DISABLED; - - if (svc->pid) { - NOTICE("service '%s' is being killed\n", svc->name); - kill(-svc->pid, SIGTERM); - notify_service_state(svc->name, "stopping"); - } else { - notify_service_state(svc->name, "stopped"); - } -} - -void property_changed(const char *name, const char *value) -{ - if (property_triggers_enabled) { - queue_property_triggers(name, value); - drain_action_queue(); - } -} - -#define CRITICAL_CRASH_THRESHOLD 4 /* if we crash >4 times ... */ -#define CRITICAL_CRASH_WINDOW (4*60) /* ... in 4 minutes, goto recovery*/ - -static int wait_for_one_process(int block) -{ - pid_t pid; - int status; - struct service *svc; - struct socketinfo *si; - time_t now; - struct listnode *node; - struct command *cmd; - - while ( (pid = waitpid(-1, &status, block ? 0 : WNOHANG)) == -1 && errno == EINTR ); - if (pid <= 0) return -1; - INFO("waitpid returned pid %d, status = %08x\n", pid, status); - - svc = service_find_by_pid(pid); - if (!svc) { - ERROR("untracked pid %d exited\n", pid); - return 0; - } - - NOTICE("process '%s', pid %d exited\n", svc->name, pid); - - if (!(svc->flags & SVC_ONESHOT)) { - kill(-pid, SIGKILL); - NOTICE("process '%s' killing any children in process group\n", svc->name); - } - - /* remove any sockets we may have created */ - for (si = svc->sockets; si; si = si->next) { - char tmp[128]; - snprintf(tmp, sizeof(tmp), ANDROID_SOCKET_DIR"/%s", si->name); - unlink(tmp); - } - - svc->pid = 0; - svc->flags &= (~SVC_RUNNING); - - /* oneshot processes go into the disabled state on exit */ - if (svc->flags & SVC_ONESHOT) { - svc->flags |= SVC_DISABLED; - } - - /* disabled processes do not get restarted automatically */ - if (svc->flags & SVC_DISABLED) { - notify_service_state(svc->name, "stopped"); - return 0; - } - - now = gettime(); - if (svc->flags & SVC_CRITICAL) { - if (svc->time_crashed + CRITICAL_CRASH_WINDOW >= now) { - if (++svc->nr_crashed > CRITICAL_CRASH_THRESHOLD) { - ERROR("critical process '%s' exited %d times in %d minutes; " - "rebooting into recovery mode\n", svc->name, - CRITICAL_CRASH_THRESHOLD, CRITICAL_CRASH_WINDOW / 60); - sync(); - __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, - LINUX_REBOOT_CMD_RESTART2, "recovery"); - return 0; - } - } else { - svc->time_crashed = now; - svc->nr_crashed = 1; - } - } - - /* Execute all onrestart commands for this service. */ - list_for_each(node, &svc->onrestart.commands) { - cmd = node_to_item(node, struct command, clist); - cmd->func(cmd->nargs, cmd->args); - } - svc->flags |= SVC_RESTARTING; - notify_service_state(svc->name, "restarting"); - return 0; -} - -static void restart_service_if_needed(struct service *svc) -{ - time_t next_start_time = svc->time_started + 5; - - if (next_start_time <= gettime()) { - svc->flags &= (~SVC_RESTARTING); - service_start(svc); - return; - } - - if ((next_start_time < process_needs_restart) || - (process_needs_restart == 0)) { - process_needs_restart = next_start_time; - } -} - -static void restart_processes() -{ - process_needs_restart = 0; - service_for_each_flags(SVC_RESTARTING, - restart_service_if_needed); -} - -static int signal_fd = -1; - -static void sigchld_handler(int s) -{ - write(signal_fd, &s, 1); -} - -static void msg_start(const char *name) -{ - struct service *svc = service_find_by_name(name); - - if (svc) { - service_start(svc); - } else { - ERROR("no such service '%s'\n", name); - } -} - -static void msg_stop(const char *name) -{ - struct service *svc = service_find_by_name(name); - - if (svc) { - service_stop(svc); - } else { - ERROR("no such service '%s'\n"); - } -} - -void handle_control_message(const char *msg, const char *arg) -{ - if (!strcmp(msg,"start")) { - msg_start(arg); - } else if (!strcmp(msg,"stop")) { - msg_stop(arg); - } else { - ERROR("unknown control msg '%s'\n", msg); - } -} - -#define MAX_MTD_PARTITIONS 16 - -static struct { - char name[16]; - int number; -} mtd_part_map[MAX_MTD_PARTITIONS]; - -static int mtd_part_count = -1; - -static void find_mtd_partitions(void) -{ - int fd; - char buf[1024]; - char *pmtdbufp; - ssize_t pmtdsize; - int r; - - fd = open("/proc/mtd", O_RDONLY); - if (fd < 0) - return; - - buf[sizeof(buf) - 1] = '\0'; - pmtdsize = read(fd, buf, sizeof(buf) - 1); - pmtdbufp = buf; - while (pmtdsize > 0) { - int mtdnum, mtdsize, mtderasesize; - char mtdname[16]; - mtdname[0] = '\0'; - mtdnum = -1; - r = sscanf(pmtdbufp, "mtd%d: %x %x %15s", - &mtdnum, &mtdsize, &mtderasesize, mtdname); - if ((r == 4) && (mtdname[0] == '"')) { - char *x = strchr(mtdname + 1, '"'); - if (x) { - *x = 0; - } - INFO("mtd partition %d, %s\n", mtdnum, mtdname + 1); - if (mtd_part_count < MAX_MTD_PARTITIONS) { - strcpy(mtd_part_map[mtd_part_count].name, mtdname + 1); - mtd_part_map[mtd_part_count].number = mtdnum; - mtd_part_count++; - } else { - ERROR("too many mtd partitions\n"); - } - } - while (pmtdsize > 0 && *pmtdbufp != '\n') { - pmtdbufp++; - pmtdsize--; - } - if (pmtdsize > 0) { - pmtdbufp++; - pmtdsize--; - } - } - close(fd); -} - -int mtd_name_to_number(const char *name) -{ - int n; - if (mtd_part_count < 0) { - mtd_part_count = 0; - find_mtd_partitions(); - } - for (n = 0; n < mtd_part_count; n++) { - if (!strcmp(name, mtd_part_map[n].name)) { - return mtd_part_map[n].number; - } - } - return -1; -} - -static void import_kernel_nv(char *name, int in_qemu) -{ - char *value = strchr(name, '='); - - if (value == 0) return; - *value++ = 0; - if (*name == 0) return; - - if (!in_qemu) - { - /* on a real device, white-list the kernel options */ - if (!strcmp(name,"qemu")) { - strlcpy(qemu, value, sizeof(qemu)); - } else if (!strcmp(name,"androidboot.console")) { - strlcpy(console, value, sizeof(console)); - } else if (!strcmp(name,"androidboot.mode")) { - strlcpy(bootmode, value, sizeof(bootmode)); - } else if (!strcmp(name,"androidboot.serialno")) { - strlcpy(serialno, value, sizeof(serialno)); - } else if (!strcmp(name,"androidboot.baseband")) { - strlcpy(baseband, value, sizeof(baseband)); - } else if (!strcmp(name,"androidboot.carrier")) { - strlcpy(carrier, value, sizeof(carrier)); - } else if (!strcmp(name,"androidboot.bootloader")) { - strlcpy(bootloader, value, sizeof(bootloader)); - } else if (!strcmp(name,"androidboot.hardware")) { - strlcpy(hardware, value, sizeof(hardware)); - } else { - qemu_cmdline(name, value); - } - } else { - /* in the emulator, export any kernel option with the - * ro.kernel. prefix */ - char buff[32]; - int len = snprintf( buff, sizeof(buff), "ro.kernel.%s", name ); - if (len < (int)sizeof(buff)) { - property_set( buff, value ); - } - } -} - -static void import_kernel_cmdline(int in_qemu) -{ - char cmdline[1024]; - char *ptr; - int fd; - - fd = open("/proc/cmdline", O_RDONLY); - if (fd >= 0) { - int n = read(fd, cmdline, 1023); - if (n < 0) n = 0; - - /* get rid of trailing newline, it happens */ - if (n > 0 && cmdline[n-1] == '\n') n--; - - cmdline[n] = 0; - close(fd); - } else { - cmdline[0] = 0; - } - - ptr = cmdline; - while (ptr && *ptr) { - char *x = strchr(ptr, ' '); - if (x != 0) *x++ = 0; - import_kernel_nv(ptr, in_qemu); - ptr = x; - } - - /* don't expose the raw commandline to nonpriv processes */ - chmod("/proc/cmdline", 0440); -} - -static void get_hardware_name(void) -{ - char data[1024]; - int fd, n; - char *x, *hw, *rev; - - /* Hardware string was provided on kernel command line */ - if (hardware[0]) - return; - - fd = open("/proc/cpuinfo", O_RDONLY); - if (fd < 0) return; - - n = read(fd, data, 1023); - close(fd); - if (n < 0) return; - - data[n] = 0; - hw = strstr(data, "\nHardware"); - rev = strstr(data, "\nRevision"); - - if (hw) { - x = strstr(hw, ": "); - if (x) { - x += 2; - n = 0; - while (*x && !isspace(*x)) { - hardware[n++] = tolower(*x); - x++; - if (n == 31) break; - } - hardware[n] = 0; - } - } - - if (rev) { - x = strstr(rev, ": "); - if (x) { - revision = strtoul(x + 2, 0, 16); - } - } -} - -static void drain_action_queue(void) -{ - struct listnode *node; - struct command *cmd; - struct action *act; - int ret; - - while ((act = action_remove_queue_head())) { - INFO("processing action %p (%s)\n", act, act->name); - list_for_each(node, &act->commands) { - cmd = node_to_item(node, struct command, clist); - ret = cmd->func(cmd->nargs, cmd->args); - INFO("command '%s' r=%d\n", cmd->args[0], ret); - } - } -} - -void open_devnull_stdio(void) -{ - int fd; - static const char *name = "/dev/__null__"; - if (mknod(name, S_IFCHR | 0600, (1 << 8) | 3) == 0) { - fd = open(name, O_RDWR); - unlink(name); - if (fd >= 0) { - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - if (fd > 2) { - close(fd); - } - return; - } - } - - exit(1); -} - -void add_service_keycodes(struct service *svc) -{ - struct input_keychord *keychord; - int i, size; - - if (svc->keycodes) { - /* add a new keychord to the list */ - size = sizeof(*keychord) + svc->nkeycodes * sizeof(keychord->keycodes[0]); - keychords = realloc(keychords, keychords_length + size); - if (!keychords) { - ERROR("could not allocate keychords\n"); - keychords_length = 0; - keychords_count = 0; - return; - } - - keychord = (struct input_keychord *)((char *)keychords + keychords_length); - keychord->version = KEYCHORD_VERSION; - keychord->id = keychords_count + 1; - keychord->count = svc->nkeycodes; - svc->keychord_id = keychord->id; - - for (i = 0; i < svc->nkeycodes; i++) { - keychord->keycodes[i] = svc->keycodes[i]; - } - keychords_count++; - keychords_length += size; - } -} - -int open_keychord() -{ - int fd, ret; - - service_for_each(add_service_keycodes); - - /* nothing to do if no services require keychords */ - if (!keychords) - return -1; - - fd = open("/dev/keychord", O_RDWR); - if (fd < 0) { - ERROR("could not open /dev/keychord\n"); - return fd; - } - fcntl(fd, F_SETFD, FD_CLOEXEC); - - ret = write(fd, keychords, keychords_length); - if (ret != keychords_length) { - ERROR("could not configure /dev/keychord %d (%d)\n", ret, errno); - close(fd); - fd = -1; - } - - free(keychords); - keychords = 0; - - return fd; -} - -void handle_keychord(int fd) -{ - struct service *svc; - int ret; - __u16 id; - - ret = read(fd, &id, sizeof(id)); - if (ret != sizeof(id)) { - ERROR("could not read keychord id\n"); - return; - } - - svc = service_find_by_keychord(id); - if (svc) { - INFO("starting service %s from keychord\n", svc->name); - service_start(svc); - } else { - ERROR("service for keychord %d not found\n", id); - } -} - -int main(int argc, char **argv) -{ - int device_fd = -1; - int property_set_fd = -1; - int signal_recv_fd = -1; - int keychord_fd = -1; - int fd_count; - int s[2]; - int fd; - struct sigaction act; - char tmp[PROP_VALUE_MAX]; - struct pollfd ufds[4]; - char *tmpdev; - char* debuggable; - - act.sa_handler = sigchld_handler; - act.sa_flags = SA_NOCLDSTOP; - act.sa_mask = 0; - act.sa_restorer = NULL; - sigaction(SIGCHLD, &act, 0); - - /* clear the umask */ - umask(0); - - /* Get the basic filesystem setup we need put - * together in the initramdisk on / and then we'll - * let the rc file figure out the rest. - */ - mkdir("/dev", 0755); - mkdir("/proc", 0755); - mkdir("/sys", 0755); - - mount("tmpfs", "/dev", "tmpfs", 0, "mode=0755"); - mkdir("/dev/pts", 0755); - mkdir("/dev/socket", 0755); - mount("devpts", "/dev/pts", "devpts", 0, NULL); - mount("proc", "/proc", "proc", 0, NULL); - mount("sysfs", "/sys", "sysfs", 0, NULL); - - /* We must have some place other than / to create the - * device nodes for kmsg and null, otherwise we won't - * be able to remount / read-only later on. - * Now that tmpfs is mounted on /dev, we can actually - * talk to the outside world. - */ - open_devnull_stdio(); - log_init(); - - INFO("reading config file\n"); - parse_config_file("/init.rc"); - - /* pull the kernel commandline and ramdisk properties file in */ - qemu_init(); - import_kernel_cmdline(0); - - get_hardware_name(); - snprintf(tmp, sizeof(tmp), "/init.%s.rc", hardware); - parse_config_file(tmp); - - action_for_each_trigger("early-init", action_add_queue_tail); - drain_action_queue(); - - INFO("device init\n"); - device_fd = device_init(); - - property_init(); - - // only listen for keychords if ro.debuggable is true - debuggable = property_get("ro.debuggable"); - if (debuggable && !strcmp(debuggable, "1")) { - keychord_fd = open_keychord(); - } - - if (console[0]) { - snprintf(tmp, sizeof(tmp), "/dev/%s", console); - console_name = strdup(tmp); - } - - fd = open(console_name, O_RDWR); - if (fd >= 0) - have_console = 1; - close(fd); - - if( load_565rle_image(INIT_IMAGE_FILE) ) { - fd = open("/dev/tty0", O_WRONLY); - if (fd >= 0) { - const char *msg; - msg = "\n" - "\n" - "\n" - "\n" - "\n" - "\n" - "\n" // console is 40 cols x 30 lines - "\n" - "\n" - "\n" - "\n" - "\n" - "\n" - "\n" - " A N D R O I D "; - write(fd, msg, strlen(msg)); - close(fd); - } - } - - if (qemu[0]) - import_kernel_cmdline(1); - - if (!strcmp(bootmode,"factory")) - property_set("ro.factorytest", "1"); - else if (!strcmp(bootmode,"factory2")) - property_set("ro.factorytest", "2"); - else - property_set("ro.factorytest", "0"); - - property_set("ro.serialno", serialno[0] ? serialno : ""); - property_set("ro.bootmode", bootmode[0] ? bootmode : "unknown"); - property_set("ro.baseband", baseband[0] ? baseband : "unknown"); - property_set("ro.carrier", carrier[0] ? carrier : "unknown"); - property_set("ro.bootloader", bootloader[0] ? bootloader : "unknown"); - - property_set("ro.hardware", hardware); - snprintf(tmp, PROP_VALUE_MAX, "%d", revision); - property_set("ro.revision", tmp); - - /* execute all the boot actions to get us started */ - action_for_each_trigger("init", action_add_queue_tail); - drain_action_queue(); - - /* read any property files on system or data and - * fire up the property service. This must happen - * after the ro.foo properties are set above so - * that /data/local.prop cannot interfere with them. - */ - property_set_fd = start_property_service(); - - /* create a signalling mechanism for the sigchld handler */ - if (socketpair(AF_UNIX, SOCK_STREAM, 0, s) == 0) { - signal_fd = s[0]; - signal_recv_fd = s[1]; - fcntl(s[0], F_SETFD, FD_CLOEXEC); - fcntl(s[0], F_SETFL, O_NONBLOCK); - fcntl(s[1], F_SETFD, FD_CLOEXEC); - fcntl(s[1], F_SETFL, O_NONBLOCK); - } - - /* make sure we actually have all the pieces we need */ - if ((device_fd < 0) || - (property_set_fd < 0) || - (signal_recv_fd < 0)) { - ERROR("init startup failure\n"); - return 1; - } - - /* execute all the boot actions to get us started */ - action_for_each_trigger("early-boot", action_add_queue_tail); - action_for_each_trigger("boot", action_add_queue_tail); - drain_action_queue(); - - /* run all property triggers based on current state of the properties */ - queue_all_property_triggers(); - drain_action_queue(); - - /* enable property triggers */ - property_triggers_enabled = 1; - - ufds[0].fd = device_fd; - ufds[0].events = POLLIN; - ufds[1].fd = property_set_fd; - ufds[1].events = POLLIN; - ufds[2].fd = signal_recv_fd; - ufds[2].events = POLLIN; - fd_count = 3; - - if (keychord_fd > 0) { - ufds[3].fd = keychord_fd; - ufds[3].events = POLLIN; - fd_count++; - } else { - ufds[3].events = 0; - ufds[3].revents = 0; - } - -#if BOOTCHART - bootchart_count = bootchart_init(); - if (bootchart_count < 0) { - ERROR("bootcharting init failure\n"); - } else if (bootchart_count > 0) { - NOTICE("bootcharting started (period=%d ms)\n", bootchart_count*BOOTCHART_POLLING_MS); - } else { - NOTICE("bootcharting ignored\n"); - } -#endif - - for(;;) { - int nr, i, timeout = -1; - - for (i = 0; i < fd_count; i++) - ufds[i].revents = 0; - - drain_action_queue(); - restart_processes(); - - if (process_needs_restart) { - timeout = (process_needs_restart - gettime()) * 1000; - if (timeout < 0) - timeout = 0; - } - -#if BOOTCHART - if (bootchart_count > 0) { - if (timeout < 0 || timeout > BOOTCHART_POLLING_MS) - timeout = BOOTCHART_POLLING_MS; - if (bootchart_step() < 0 || --bootchart_count == 0) { - bootchart_finish(); - bootchart_count = 0; - } - } -#endif - nr = poll(ufds, fd_count, timeout); - if (nr <= 0) - continue; - - if (ufds[2].revents == POLLIN) { - /* we got a SIGCHLD - reap and restart as needed */ - read(signal_recv_fd, tmp, sizeof(tmp)); - while (!wait_for_one_process(0)) - ; - continue; - } - - if (ufds[0].revents == POLLIN) - handle_device_fd(device_fd); - - if (ufds[1].revents == POLLIN) - handle_property_set_fd(property_set_fd); - if (ufds[3].revents == POLLIN) - handle_keychord(keychord_fd); - } - - return 0; -} |