57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <stddef.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <signal.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <unistd.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <errno.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <stdio.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <stdlib.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <stdbool.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <string.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <fcntl.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <getopt.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/file.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/time.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/prctl.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/socket.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/signalfd.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/epoll.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/mount.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/wait.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/stat.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/ioctl.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include <sys/inotify.h>

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "sd-daemon.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "rtnl-util.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "cgroup-util.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "dev-setup.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "fileio.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "selinux-util.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "udev.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen#include "udev-util.h"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic struct udev_rules *rules;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic struct udev_ctrl *udev_ctrl;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic struct udev_monitor *monitor;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int worker_watch[2] = { -1, -1 };

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int fd_signal = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int fd_ep = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int fd_inotify = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic bool stop_exec_queue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic bool reload;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int children;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic bool arg_debug = false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int arg_daemonize = false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int arg_resolve_names = 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int arg_children_max;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int arg_exec_delay;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic usec_t arg_event_timeout_usec = 180 * USEC_PER_SEC;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic usec_t arg_event_timeout_warn_usec = 180 * USEC_PER_SEC / 3;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic sigset_t sigmask_orig;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic UDEV_LIST(event_list);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic UDEV_LIST(worker_list);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic char *udev_cgroup;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic struct udev_list properties_list;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic bool udev_exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenenum event_state {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen EVENT_UNDEF,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen EVENT_QUEUED,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen EVENT_RUNNING,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen};

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstruct event {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node node;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev *udev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_device *dev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_device *dev_kernel;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen enum event_state state;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int exitcode;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen unsigned long long int delaying_seqnum;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen unsigned long long int seqnum;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen const char *devpath;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen size_t devpath_len;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen const char *devpath_old;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dev_t devnum;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int ifindex;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen bool is_block;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen};

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic inline struct event *node_to_event(struct udev_list_node *node) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return container_of(node, struct event, node);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void event_queue_cleanup(struct udev *udev, enum event_state type);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenenum worker_state {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen WORKER_UNDEF,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen WORKER_RUNNING,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen WORKER_IDLE,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen WORKER_KILLED,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen};

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstruct worker {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node node;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev *udev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int refcount;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid_t pid;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_monitor *monitor;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen enum worker_state state;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct event *event;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen usec_t event_start_usec;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen bool event_warned;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen};

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstruct worker_message {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid_t pid;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int exitcode;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen};

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic inline struct worker *node_to_worker(struct udev_list_node *node) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return container_of(node, struct worker, node);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void event_queue_delete(struct event *event) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_remove(&event->node);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_unref(event->dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_unref(event->dev_kernel);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen free(event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic struct worker *worker_ref(struct worker *worker) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->refcount++;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return worker;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void worker_cleanup(struct worker *worker) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_remove(&worker->node);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_unref(worker->monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen children--;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen free(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void worker_unref(struct worker *worker) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->refcount--;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->refcount > 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("worker ["PID_FMT"] cleaned up", worker->pid);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_cleanup(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersenstatic void worker_list_cleanup(struct udev *udev) {

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen struct udev_list_node *loop, *tmp;

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen udev_list_node_foreach_safe(loop, tmp, &worker_list) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker *worker = node_to_worker(loop);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_cleanup(worker);

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen }

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen}

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersenstatic void worker_new(struct event *event) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev *udev = event->udev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker *worker;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_monitor *worker_monitor;

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen pid_t pid;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* listen for new events */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_monitor = udev_monitor_new_from_netlink(udev, NULL);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker_monitor == NULL)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* allow the main daemon netlink address to send devices to the worker */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_allow_unicast_sender(worker_monitor, monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_enable_receiving(worker_monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker = new0(struct worker, 1);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker == NULL) {

52d629010db73a9466c359201916494bd55186d1Tom Gundersen udev_monitor_unref(worker_monitor);

52d629010db73a9466c359201916494bd55186d1Tom Gundersen return;

52d629010db73a9466c359201916494bd55186d1Tom Gundersen }

52d629010db73a9466c359201916494bd55186d1Tom Gundersen /* worker + event reference */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->refcount = 2;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->udev = udev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid = fork();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen switch (pid) {

52d629010db73a9466c359201916494bd55186d1Tom Gundersen case 0: {

52d629010db73a9466c359201916494bd55186d1Tom Gundersen struct udev_device *dev = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd_monitor;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct epoll_event ep_signal, ep_monitor;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen sigset_t mask;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int rc = EXIT_SUCCESS;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* take initial device from queue */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dev = event->dev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->dev = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen free(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_list_cleanup(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event_queue_cleanup(udev, EVENT_UNDEF);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_unref(monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_ctrl_unref(udev_ctrl);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen close(fd_signal);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen close(fd_ep);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen close(worker_watch[READ_END]);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen sigfillset(&mask);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd_signal < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "error creating signalfd %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 2;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_ep = epoll_create1(EPOLL_CLOEXEC);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd_ep < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "error creating epoll fd: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 3;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen memzero(&ep_signal, sizeof(struct epoll_event));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ep_signal.events = EPOLLIN;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ep_signal.data.fd = fd_signal;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_monitor = udev_monitor_get_fd(worker_monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen memzero(&ep_monitor, sizeof(struct epoll_event));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ep_monitor.events = EPOLLIN;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ep_monitor.data.fd = fd_monitor;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_signal, &ep_signal) < 0 ||

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_monitor, &ep_monitor) < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "fail to add fds to epoll: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 4;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* request TERM signal if parent exits */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen prctl(PR_SET_PDEATHSIG, SIGTERM);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* reset OOM score, we only protect the main daemon */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen write_string_file("/proc/self/oom_score_adj", "0");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen for (;;) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_event *udev_event;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker_message msg;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd_lock = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int err = 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("seq %llu running", udev_device_get_seqnum(dev));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event = udev_event_new(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_event == NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 5;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* needed for SIGCHLD/SIGTERM in spawn() */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event->fd_signal = fd_signal;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (arg_exec_delay > 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event->exec_delay = arg_exec_delay;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /*

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!streq_ptr(udev_device_get_action(dev), "remove") &&

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen streq_ptr("block", udev_device_get_subsystem(dev)) &&

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen !startswith(udev_device_get_sysname(dev), "dm-") &&

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen !startswith(udev_device_get_sysname(dev), "md")) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_device *d = dev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (streq_ptr("partition", udev_device_get_devtype(d)))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen d = udev_device_get_parent(d);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (d) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_lock = open(udev_device_get_devnode(d), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd_lock >= 0 && flock(fd_lock, LOCK_SH|LOCK_NB) < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug_errno(errno, "Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen err = -EAGAIN;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_lock = safe_close(fd_lock);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto skip;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* needed for renaming netifs */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event->rtnl = rtnl;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* apply rules, create node, symlinks */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event_execute_rules(udev_event,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_event_timeout_usec, arg_event_timeout_warn_usec,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen &properties_list,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rules,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen &sigmask_orig);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event_execute_run(udev_event,

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen arg_event_timeout_usec, arg_event_timeout_warn_usec,

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen &sigmask_orig);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_event->rtnl)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* in case rtnl was initialized */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rtnl = sd_rtnl_ref(udev_event->rtnl);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* apply/restore inotify watch */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_event->inotify_watch) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_watch_begin(udev, dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_update_db(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen safe_close(fd_lock);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* send processed event back to libudev listeners */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_send_device(worker_monitor, NULL, dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenskip:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* send udevd the result of the event execution */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen memzero(&msg, sizeof(struct worker_message));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen msg.exitcode = err;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen msg.pid = getpid();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen send(worker_watch[WRITE_END], &msg, sizeof(struct worker_message), 0);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("seq %llu processed with %i", udev_device_get_seqnum(dev), err);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_unref(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dev = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_event->sigterm) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event_unref(udev_event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_event_unref(udev_event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* wait for more device messages from main udevd, or term signal */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen while (dev == NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct epoll_event ev[4];

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fdcount;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int i;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fdcount < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (errno == EINTR)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "failed to poll: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen for (i = 0; i < fdcount; i++) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (ev[i].data.fd == fd_monitor && ev[i].events & EPOLLIN) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dev = udev_monitor_receive_device(worker_monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if (ev[i].data.fd == fd_signal && ev[i].events & EPOLLIN) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct signalfd_siginfo fdsi;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ssize_t size;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen size = read(fd_signal, &fdsi, sizeof(struct signalfd_siginfo));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (size != sizeof(struct signalfd_siginfo))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen switch (fdsi.ssi_signo) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case SIGTERM:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenout:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_unref(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen safe_close(fd_signal);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen safe_close(fd_ep);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen close(fd_inotify);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen close(worker_watch[WRITE_END]);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_rules_unref(rules);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_builtin_exit(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_unref(worker_monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_unref(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_close();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen exit(rc);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case -1:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_unref(worker_monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->state = EVENT_QUEUED;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen free(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "fork of child failed: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen default:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* close monitor, but keep address around */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_disconnect(worker_monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->monitor = worker_monitor;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->pid = pid;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->state = WORKER_RUNNING;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event_start_usec = now(CLOCK_MONOTONIC);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event_warned = false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event = event;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->state = EVENT_RUNNING;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_append(&worker->node, &worker_list);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen children++;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("seq %llu forked new worker ["PID_FMT"]", udev_device_get_seqnum(event->dev), pid);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void event_run(struct event *event) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node *loop;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_foreach(loop, &worker_list) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker *worker = node_to_worker(loop);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ssize_t count;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->state != WORKER_IDLE)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen count = udev_monitor_send_device(monitor, worker->monitor, event->dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (count < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "worker ["PID_FMT"] did not accept message %zi (%m), kill it",

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->pid, count);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen kill(worker->pid, SIGKILL);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->state = WORKER_KILLED;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_ref(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event = event;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->state = WORKER_RUNNING;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event_start_usec = now(CLOCK_MONOTONIC);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event_warned = false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->state = EVENT_RUNNING;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (children >= arg_children_max) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (arg_children_max > 1)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("maximum number (%i) of children reached", children);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* start new worker and pass initial device */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_new(event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int event_queue_insert(struct udev_device *dev) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct event *event;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event = new0(struct event, 1);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (event == NULL)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->udev = udev_device_get_udev(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->dev = dev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->dev_kernel = udev_device_shallow_clone(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_copy_properties(event->dev_kernel, dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->seqnum = udev_device_get_seqnum(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->devpath = udev_device_get_devpath(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->devpath_len = strlen(event->devpath);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->devpath_old = udev_device_get_devpath_old(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->devnum = udev_device_get_devnum(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->is_block = streq("block", udev_device_get_subsystem(dev));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->ifindex = udev_device_get_ifindex(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("seq %llu queued, '%s' '%s'", udev_device_get_seqnum(dev),

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_get_action(dev), udev_device_get_subsystem(dev));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->state = EVENT_QUEUED;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_append(&event->node, &event_list);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void worker_kill(struct udev *udev) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node *loop;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_foreach(loop, &worker_list) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker *worker = node_to_worker(loop);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->state == WORKER_KILLED)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->state = WORKER_KILLED;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen kill(worker->pid, SIGTERM);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic bool is_devpath_busy(struct event *event) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node *loop;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen size_t common;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* check if queue contains events we depend on */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_foreach(loop, &event_list) {

7141e4f62c3f220872df3114c42d9e4b9525e43eTom Gundersen struct event *loop_event = node_to_event(loop);

7141e4f62c3f220872df3114c42d9e4b9525e43eTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* we already found a later event, earlier can not block us, no need to check again */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (loop_event->seqnum < event->delaying_seqnum)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* event we checked earlier still exists, no need to check again */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (loop_event->seqnum == event->delaying_seqnum)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return true;

bba061662b0f759abb43bad60c9733305c191045Tom Gundersen

bba061662b0f759abb43bad60c9733305c191045Tom Gundersen /* found ourself, no later event can block us */

bba061662b0f759abb43bad60c9733305c191045Tom Gundersen if (loop_event->seqnum >= event->seqnum)

2a2137401b3aef20618308d2b2694e21b0124f89Tom Gundersen break;

2a2137401b3aef20618308d2b2694e21b0124f89Tom Gundersen

2a2137401b3aef20618308d2b2694e21b0124f89Tom Gundersen /* check major/minor */

bba061662b0f759abb43bad60c9733305c191045Tom Gundersen if (major(event->devnum) != 0 && event->devnum == loop_event->devnum && event->is_block == loop_event->is_block)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* check network device ifindex */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (event->ifindex != 0 && event->ifindex == loop_event->ifindex)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* check our old name */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (event->devpath_old != NULL && streq(loop_event->devpath, event->devpath_old)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->delaying_seqnum = loop_event->seqnum;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* compare devpath */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen common = MIN(loop_event->devpath_len, event->devpath_len);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* one devpath is contained in the other? */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (memcmp(loop_event->devpath, event->devpath, common) != 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* identical device event found */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (loop_event->devpath_len == event->devpath_len) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* devices names might have changed/swapped in the meantime */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (major(event->devnum) != 0 && (event->devnum != loop_event->devnum || event->is_block != loop_event->is_block))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (event->ifindex != 0 && event->ifindex != loop_event->ifindex)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->delaying_seqnum = loop_event->seqnum;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* parent device event found */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (event->devpath[common] == '/') {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->delaying_seqnum = loop_event->seqnum;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* child device event found */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (loop_event->devpath[common] == '/') {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event->delaying_seqnum = loop_event->seqnum;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* no matching device */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void event_queue_start(struct udev *udev) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node *loop;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_foreach(loop, &event_list) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct event *event = node_to_event(loop);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (event->state != EVENT_QUEUED)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* do not start event if parent or child event is still running */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (is_devpath_busy(event))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event_run(event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void event_queue_cleanup(struct udev *udev, enum event_state match_type) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node *loop, *tmp;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_foreach_safe(loop, tmp, &event_list) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct event *event = node_to_event(loop);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (match_type != EVENT_UNDEF && match_type != event->state)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event_queue_delete(event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void worker_returned(int fd_worker) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen for (;;) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker_message msg;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ssize_t size;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node *loop;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen size = recv(fd_worker, &msg, sizeof(struct worker_message), MSG_DONTWAIT);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (size != sizeof(struct worker_message))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* lookup worker who sent the signal */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_foreach(loop, &worker_list) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker *worker = node_to_worker(loop);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->pid != msg.pid)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* worker returned */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->event) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event->exitcode = msg.exitcode;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event_queue_delete(worker->event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->state != WORKER_KILLED)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->state = WORKER_IDLE;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_unref(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev *udev = udev_ctrl_get_udev(uctrl);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_ctrl_connection *ctrl_conn;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_ctrl_msg *ctrl_msg = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen const char *str;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int i;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ctrl_conn = udev_ctrl_get_connection(uctrl);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (ctrl_conn == NULL)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersen ctrl_msg = udev_ctrl_receive_msg(ctrl_conn);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (ctrl_msg == NULL)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto out;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen i = udev_ctrl_get_set_log_level(ctrl_msg);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (i >= 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_set_max_level(i);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_kill(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (STOP_EXEC_QUEUE) received");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen stop_exec_queue = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_ctrl_get_start_exec_queue(ctrl_msg) > 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (START_EXEC_QUEUE) received");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen stop_exec_queue = false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_ctrl_get_reload(ctrl_msg) > 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (RELOAD) received");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen reload = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen str = udev_ctrl_get_set_env(ctrl_msg);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (str != NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen char *key;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen key = strdup(str);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (key != NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen char *val;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen val = strchr(key, '=');

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (val != NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen val[0] = '\0';

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen val = &val[1];

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (val[0] == '\0') {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (ENV) received, unset '%s'", key);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_entry_add(&properties_list, key, NULL);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (ENV) received, set '%s=%s'", key, val);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_entry_add(&properties_list, key, val);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("wrong key format '%s'", key);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen free(key);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_kill(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen i = udev_ctrl_get_set_children_max(ctrl_msg);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (i >= 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i", i);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_children_max = i;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_ctrl_get_ping(ctrl_msg) > 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (SYNC) received");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_ctrl_get_exit(ctrl_msg) > 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("udevd message (EXIT) received");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_exit = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* keep reference to block the client until we exit */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_ctrl_connection_ref(ctrl_conn);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenout:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_ctrl_msg_unref(ctrl_msg);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return udev_ctrl_connection_unref(ctrl_conn);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

08232a020bd2571088d3ee06dda07732c5e963d1Tom Gundersenstatic int synthesize_change(struct udev_device *dev) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen char filename[UTIL_PATH_SIZE];

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (streq_ptr("block", udev_device_get_subsystem(dev)) &&

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen streq_ptr("disk", udev_device_get_devtype(dev)) &&

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen !startswith(udev_device_get_sysname(dev), "dm-")) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen bool part_table_read = false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen bool has_partitions = false;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev *udev = udev_device_get_udev(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_entry *item;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /*

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd = open(udev_device_get_devnode(dev), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd >= 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = flock(fd, LOCK_EX|LOCK_NB);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r >= 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = ioctl(fd, BLKRRPART, 0);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen close(fd);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r >= 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen part_table_read = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* search for partitions */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen e = udev_enumerate_new(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!e)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return -ENOMEM;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = udev_enumerate_add_match_parent(e, dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = udev_enumerate_add_match_subsystem(e, "block");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = udev_enumerate_scan_devices(e);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen _cleanup_udev_device_unref_ struct udev_device *d = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!d)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!streq_ptr("partition", udev_device_get_devtype(d)))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen has_partitions = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /*

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (part_table_read && has_partitions)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /*

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));

5a917c064b23c1b8a12d6abd2f9f31c575ddebc6Tom Gundersen strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen write_string_file(filename, "change");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen _cleanup_udev_device_unref_ struct udev_device *d = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!d)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!streq_ptr("partition", udev_device_get_devtype(d)))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("device %s closed, synthesising partition '%s' 'change'",

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_get_devnode(dev), udev_device_get_devnode(d));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen strscpyl(filename, sizeof(filename), udev_device_get_syspath(d), "/uevent", NULL);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen write_string_file(filename, "change");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen write_string_file(filename, "change");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int handle_inotify(struct udev *udev) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen union inotify_event_buffer buffer;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct inotify_event *e;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ssize_t l;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen l = read(fd_inotify, &buffer, sizeof(buffer));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (l < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (errno == EAGAIN || errno == EINTR)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return log_error_errno(errno, "Failed to read inotify fd: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen FOREACH_INOTIFY_EVENT(e, buffer, l) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_device *dev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dev = udev_watch_lookup(udev, e->wd);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!dev)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("inotify event: %x for %s", e->mask, udev_device_get_devnode(dev));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (e->mask & IN_CLOSE_WRITE)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen synthesize_change(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen else if (e->mask & IN_IGNORED)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_watch_end(udev, dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_unref(dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void handle_signal(struct udev *udev, int signo) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen switch (signo) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case SIGINT:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case SIGTERM:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_exit = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case SIGCHLD:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen for (;;) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid_t pid;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int status;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_list_node *loop, *tmp;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid = waitpid(-1, &status, WNOHANG);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (pid <= 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_foreach_safe(loop, tmp, &worker_list) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct worker *worker = node_to_worker(loop);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->pid != pid)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("worker ["PID_FMT"] exit", pid);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (WIFEXITED(status)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (WEXITSTATUS(status) != 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("worker ["PID_FMT"] exit with return code %i",

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid, WEXITSTATUS(status));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if (WIFSIGNALED(status)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("worker ["PID_FMT"] terminated by signal %i (%s)",

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid, WTERMSIG(status), strsignal(WTERMSIG(status)));

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if (WIFSTOPPED(status)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("worker ["PID_FMT"] stopped", pid);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if (WIFCONTINUED(status)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("worker ["PID_FMT"] continued", pid);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("worker ["PID_FMT"] exit with status 0x%04x", pid, status);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (worker->event) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("worker ["PID_FMT"] failed while handling '%s'",

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid, worker->event->devpath);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker->event->exitcode = -32;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* delete state from disk */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_delete_db(worker->event->dev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_device_tag_index(worker->event->dev, NULL, false);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* forward kernel event without amending it */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_send_device(monitor, NULL, worker->event->dev_kernel);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen event_queue_delete(worker->event);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* drop reference taken for state 'running' */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_unref(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen worker_unref(worker);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case SIGHUP:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen reload = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void event_queue_update(void) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!udev_list_node_is_empty(&event_list)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = touch("/run/udev/queue");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning_errno(r, "could not touch /run/udev/queue: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = unlink("/run/udev/queue");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0 && errno != ENOENT)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning("could not unlink /run/udev/queue: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int systemd_fds(struct udev *udev, int *rctrl, int *rnetlink) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int ctrl = -1, netlink = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd, n;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen n = sd_listen_fds(true);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (n <= 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen for (fd = SD_LISTEN_FDS_START; fd < n + SD_LISTEN_FDS_START; fd++) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (sd_is_socket(fd, AF_LOCAL, SOCK_SEQPACKET, -1)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (ctrl >= 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen ctrl = fd;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1)) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (netlink >= 0)

afcac065c0f649ebcf0f450475a8d7c3bc776d14Tom Gundersen return -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen netlink = fd;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen continue;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (ctrl < 0 || netlink < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("ctrl=%i netlink=%i", ctrl, netlink);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen *rctrl = ctrl;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen *rnetlink = netlink;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void kernel_cmdline_options(struct udev *udev) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen _cleanup_free_ char *line = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen const char *word, *state;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen size_t l;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = proc_cmdline(&line);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen FOREACH_WORD_QUOTED(word, l, line, state) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen char *s, *opt, *value;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen s = strndup(word, l);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (!s)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* accept the same options for the initrd, prefixed with "rd." */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (in_initrd() && startswith(s, "rd."))

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen opt = s + 3;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen else

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen opt = s;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if ((value = startswith(opt, "udev.log-priority="))) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int prio;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen prio = util_log_priority(value);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_set_max_level(prio);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if ((value = startswith(opt, "udev.children-max="))) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = safe_atoi(value, &arg_children_max);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning("Invalid udev.children-max ignored: %s", value);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if ((value = startswith(opt, "udev.exec-delay="))) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = safe_atoi(value, &arg_exec_delay);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning("Invalid udev.exec-delay ignored: %s", value);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if ((value = startswith(opt, "udev.event-timeout="))) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = safe_atou64(value, &arg_event_timeout_usec);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning("Invalid udev.event-timeout ignored: %s", value);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_event_timeout_usec *= USEC_PER_SEC;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen free(s);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic void help(void) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen printf("%s [OPTIONS...]\n\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen "Manages devices.\n\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " -h --help Print this message\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " --version Print version of the program\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " --daemon Detach and run in the background\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " --debug Enable debug output\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " --children-max=INT Set maximum number of workers\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " --exec-delay=SECONDS Seconds to wait before executing RUN=\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " --event-timeout=SECONDS Seconds to wait before terminating an event\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " --resolve-names=early|late|never\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen " When to resolve users and groups\n"

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen , program_invocation_short_name);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenstatic int parse_argv(int argc, char *argv[]) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen static const struct option options[] = {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "daemon", no_argument, NULL, 'd' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "debug", no_argument, NULL, 'D' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "children-max", required_argument, NULL, 'c' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "exec-delay", required_argument, NULL, 'e' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "event-timeout", required_argument, NULL, 't' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "resolve-names", required_argument, NULL, 'N' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "help", no_argument, NULL, 'h' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen { "version", no_argument, NULL, 'V' },

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen {}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen };

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int c;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen assert(argc >= 0);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen assert(argv);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen while ((c = getopt_long(argc, argv, "c:de:DtN:hV", options, NULL)) >= 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen switch (c) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 'd':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_daemonize = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 'c':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = safe_atoi(optarg, &arg_children_max);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning("Invalid --children-max ignored: %s", optarg);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 'e':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = safe_atoi(optarg, &arg_exec_delay);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning("Invalid --exec-delay ignored: %s", optarg);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 't':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = safe_atou64(optarg, &arg_event_timeout_usec);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_warning("Invalid --event-timeout ignored: %s", optarg);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_event_timeout_usec *= USEC_PER_SEC;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 'D':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_debug = true;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 'N':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (streq(optarg, "early")) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_resolve_names = 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if (streq(optarg, "late")) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_resolve_names = 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else if (streq(optarg, "never")) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_resolve_names = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("resolve-names must be early, late or never");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 'h':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen help();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 'V':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen printf("%s\n", VERSION);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 0;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case '?':

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return -EINVAL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen default:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen assert_not_reached("Unhandled option");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen return 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen}

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersenint main(int argc, char *argv[]) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev *udev;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen sigset_t mask;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd_ctrl = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd_netlink = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd_worker = -1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct epoll_event ep_ctrl = { .events = EPOLLIN };

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct epoll_event ep_inotify = { .events = EPOLLIN };

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct epoll_event ep_signal = { .events = EPOLLIN };

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct epoll_event ep_netlink = { .events = EPOLLIN };

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct epoll_event ep_worker = { .events = EPOLLIN };

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen struct udev_ctrl_connection *ctrl_conn = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int rc = 1, r;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev = udev_new();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev == NULL)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_set_target(LOG_TARGET_AUTO);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_parse_environment();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_open();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = parse_argv(argc, argv);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r <= 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen kernel_cmdline_options(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (arg_debug)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_set_max_level(LOG_DEBUG);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (getuid() != 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("root privileges required");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = mac_selinux_init("/dev");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(r, "could not initialize labelling: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* set umask before creating any file/directory */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = chdir("/");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "could not change dir to /: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen umask(022);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_init(udev, &properties_list, true);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen r = mkdir("/run/udev", 0755);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (r < 0 && errno != EEXIST) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "could not create /run/udev: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dev_setup(NULL);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* before opening new files, make sure std{in,out,err} fds are in a sane state */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (arg_daemonize) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen int fd;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd = open("/dev/null", O_RDWR);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd >= 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (write(STDOUT_FILENO, 0, 0) < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dup2(fd, STDOUT_FILENO);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (write(STDERR_FILENO, 0, 0) < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen dup2(fd, STDERR_FILENO);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd > STDERR_FILENO)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen close(fd);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("cannot open /dev/null");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (systemd_fds(udev, &fd_ctrl, &fd_netlink) >= 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* get control and netlink socket from systemd */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_ctrl = udev_ctrl_new_from_fd(udev, fd_ctrl);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_ctrl == NULL) {

53fae771bcf1623cd28791c48fa60d9d5e5086e4Zbigniew Jędrzejewski-Szmek log_error("error taking over udev control socket");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

53fae771bcf1623cd28791c48fa60d9d5e5086e4Zbigniew Jędrzejewski-Szmek monitor = udev_monitor_new_from_netlink_fd(udev, "kernel", fd_netlink);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (monitor == NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error taking over netlink socket");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 3;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* get our own cgroup, we regularly kill everything udev has left behind */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &udev_cgroup) < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_cgroup = NULL;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* open control and netlink socket */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_ctrl = udev_ctrl_new(udev);

53fae771bcf1623cd28791c48fa60d9d5e5086e4Zbigniew Jędrzejewski-Szmek if (udev_ctrl == NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error initializing udev control socket");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_ctrl = udev_ctrl_get_fd(udev_ctrl);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen monitor = udev_monitor_new_from_netlink(udev, "kernel");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (monitor == NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error initializing netlink socket");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 3;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

107f2e2526d476c6cc9b81a690391c111027d641Tom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_netlink = udev_monitor_get_fd(monitor);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_monitor_enable_receiving(monitor) < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error binding netlink socket");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 3;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (udev_ctrl_enable_receiving(udev_ctrl) < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error binding udev control socket");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 1;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

107f2e2526d476c6cc9b81a690391c111027d641Tom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_info("starting version " VERSION);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

7141e4f62c3f220872df3114c42d9e4b9525e43eTom Gundersen udev_builtin_init(udev);

7141e4f62c3f220872df3114c42d9e4b9525e43eTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rules = udev_rules_new(udev, arg_resolve_names);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (rules == NULL) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error reading rules");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = udev_rules_apply_static_dev_perms(rules);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (rc < 0)

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(rc, "failed to apply permissions on static device nodes - %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (arg_daemonize) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid_t pid;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen pid = fork();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen switch (pid) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case 0:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen break;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen case -1:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error_errno(errno, "fork of daemon failed: %m");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 4;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen default:

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = EXIT_SUCCESS;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit_daemonize;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen setsid();

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen write_string_file("/proc/self/oom_score_adj", "-1000");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen } else {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen sd_notify(1, "READY=1");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (arg_children_max <= 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen cpu_set_t cpu_set;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_children_max = 8;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (sched_getaffinity(0, sizeof (cpu_set), &cpu_set) == 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen arg_children_max += CPU_COUNT(&cpu_set) * 2;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_debug("set children_max to %u", arg_children_max);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_init(&event_list);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_list_node_init(&worker_list);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_inotify = udev_watch_init(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd_inotify < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error initializing inotify");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 4;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen udev_watch_restore(udev);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen /* block and listen to all signals on signalfd */

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen sigfillset(&mask);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen if (fd_signal < 0) {

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen log_error("error creating signalfd");

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen rc = 5;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen goto exit;

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen }

57fa1d094cd2c5ac68970526ad0a0754c548e75dTom Gundersen