139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <stddef.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <signal.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <unistd.h>

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt#include <errno.h>

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams#include <stdio.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <stdlib.h>

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt#include <stdbool.h>

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt#include <string.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <fcntl.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <getopt.h>

3df3e884ae1237ef0d4d23b0e80f4ffda95ac135Ronny Chevalier#include <sys/file.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <sys/time.h>

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt#include <sys/prctl.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <sys/socket.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <sys/signalfd.h>

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt#include <sys/epoll.h>

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt#include <sys/mount.h>

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersen#include <sys/wait.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include <sys/stat.h>

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams#include <sys/ioctl.h>

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams#include <sys/inotify.h>

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include "sd-daemon.h"

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include "sd-event.h"

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include "terminal-util.h"

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include "signal-util.h"

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt#include "event-util.h"

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams#include "netlink-util.h"

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams#include "cgroup-util.h"

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams#include "process-util.h"

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt#include "dev-setup.h"

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt#include "fileio.h"

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt#include "selinux-util.h"

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt#include "udev.h"

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt#include "udev-util.h"

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt#include "formats-util.h"

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt#include "hashmap.h"

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flyktstatic bool arg_debug = false;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flyktstatic int arg_daemonize = false;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flyktstatic int arg_resolve_names = 1;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flyktstatic unsigned arg_children_max;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flyktstatic int arg_exec_delay;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flyktstatic usec_t arg_event_timeout_usec = 180 * USEC_PER_SEC;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flyktstatic usec_t arg_event_timeout_warn_usec = 180 * USEC_PER_SEC / 3;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersentypedef struct Manager {

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams struct udev *udev;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt sd_event *event;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt Hashmap *workers;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt struct udev_list_node events;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt const char *cgroup;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt pid_t pid; /* the process that originally allocated the manager object */

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flykt struct udev_rules *rules;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt struct udev_list properties;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt struct udev_monitor *monitor;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt struct udev_ctrl *ctrl;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt struct udev_ctrl_connection *ctrl_conn_blocking;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt int fd_inotify;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt int worker_watch[2];

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt sd_event_source *ctrl_event;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt sd_event_source *uevent_event;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt sd_event_source *inotify_event;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt usec_t last_usec;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt bool stop_exec_queue:1;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt bool exit:1;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt} Manager;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flyktenum event_state {

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt EVENT_UNDEF,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt EVENT_QUEUED,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt EVENT_RUNNING,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt};

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flyktstruct event {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct udev_list_node node;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt Manager *manager;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct udev *udev;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct udev_device *dev;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct udev_device *dev_kernel;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct worker *worker;

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt enum event_state state;

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt unsigned long long int delaying_seqnum;

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt unsigned long long int seqnum;

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt const char *devpath;

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt size_t devpath_len;

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt const char *devpath_old;

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt dev_t devnum;

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt int ifindex;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt bool is_block;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt sd_event_source *timeout_warning;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt sd_event_source *timeout;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt};

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flyktstatic inline struct event *node_to_event(struct udev_list_node *node) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt return container_of(node, struct event, node);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt}

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flyktstatic void event_queue_cleanup(Manager *manager, enum event_state type);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flyktenum worker_state {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt WORKER_UNDEF,

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt WORKER_RUNNING,

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt WORKER_IDLE,

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt WORKER_KILLED,

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt};

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flyktstruct worker {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt Manager *manager;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt struct udev_list_node node;

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams int refcount;

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams pid_t pid;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt struct udev_monitor *monitor;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt enum worker_state state;

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams struct event *event;

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams};

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williamsstruct worker_message {

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams};

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williamsstatic void event_free(struct event *event) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt int r;

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams if (!event)

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams return;

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams udev_list_node_remove(&event->node);

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams udev_device_unref(event->dev);

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams udev_device_unref(event->dev_kernel);

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams sd_event_source_unref(event->timeout_warning);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt sd_event_source_unref(event->timeout);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (event->worker)

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt event->worker->event = NULL;

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller assert(event->manager);

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller if (udev_list_node_is_empty(&event->manager->events)) {

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller /* only clean up the queue from the process that created it */

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller if (event->manager->pid == getpid()) {

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller r = unlink("/run/udev/queue");

ebe207d4acf38165adbc45298662982eecdb9e9fTom Gundersen if (r < 0)

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams log_warning_errno(errno, "could not unlink /run/udev/queue: %m");

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams }

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams }

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams free(event);

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams}

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersenstatic void worker_free(struct worker *worker) {

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersen if (!worker)

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen return;

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen assert(worker->manager);

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersen

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen hashmap_remove(worker->manager->workers, UINT_TO_PTR(worker->pid));

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen udev_monitor_unref(worker->monitor);

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen event_free(worker->event);

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersen

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen free(worker);

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen}

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersenstatic void manager_workers_free(Manager *manager) {

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen struct worker *worker;

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen Iterator i;

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen assert(manager);

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen HASHMAP_FOREACH(worker, manager->workers, i)

fe4b2156256c5bdf52341576571ce9f095d9f085Tom Gundersen worker_free(worker);

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersen

ebe207d4acf38165adbc45298662982eecdb9e9fTom Gundersen manager->workers = hashmap_free(manager->workers);

764aad6258eec3bd4ae62ea341ea507bd69ce628Tom Gundersen}

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williamsstatic int worker_new(struct worker **ret, Manager *manager, struct udev_monitor *worker_monitor, pid_t pid) {

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams _cleanup_free_ struct worker *worker = NULL;

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams int r;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(ret);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(worker_monitor);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(pid > 1);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt worker = new0(struct worker, 1);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt if (!worker)

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt return -ENOMEM;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt worker->refcount = 1;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt worker->manager = manager;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt /* close monitor, but keep address around */

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt udev_monitor_disconnect(worker_monitor);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt worker->monitor = udev_monitor_ref(worker_monitor);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt worker->pid = pid;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt r = hashmap_ensure_allocated(&manager->workers, NULL);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt if (r < 0)

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt return r;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt r = hashmap_put(manager->workers, UINT_TO_PTR(pid), worker);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt if (r < 0)

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt return r;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt *ret = worker;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt worker = NULL;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt return 0;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt}

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flyktstatic int on_event_timeout(sd_event_source *s, uint64_t usec, void *userdata) {

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt struct event *event = userdata;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt assert(event);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt assert(event->worker);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt kill_and_sigcont(event->worker->pid, SIGKILL);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt event->worker->state = WORKER_KILLED;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt log_error("seq %llu '%s' killed", udev_device_get_seqnum(event->dev), event->devpath);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt return 1;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt}

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flyktstatic int on_event_timeout_warning(sd_event_source *s, uint64_t usec, void *userdata) {

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt struct event *event = userdata;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt assert(event);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt log_warning("seq %llu '%s' is taking a long time", udev_device_get_seqnum(event->dev), event->devpath);

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt return 1;

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt}

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flyktstatic void worker_attach_event(struct worker *worker, struct event *event) {

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt sd_event *e;

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt uint64_t usec;

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt int r;

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt assert(worker);

ea3b3a75abb3f8b853f7da454b9b8e258a120eeaPatrik Flykt assert(worker->manager);

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt assert(event);

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt assert(!event->worker);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt assert(!worker->event);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt worker->state = WORKER_RUNNING;

c806ffb9592fa9a2b13a1f9f9be4c77cd5b211aaZbigniew Jędrzejewski-Szmek worker->event = event;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt event->state = EVENT_RUNNING;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt event->worker = worker;

4e3e6679e8f73b83d38e4b20d8b025e12991d1cbPatrik Flykt

4e3e6679e8f73b83d38e4b20d8b025e12991d1cbPatrik Flykt e = worker->manager->event;

4e3e6679e8f73b83d38e4b20d8b025e12991d1cbPatrik Flykt

4e3e6679e8f73b83d38e4b20d8b025e12991d1cbPatrik Flykt r = sd_event_now(e, clock_boottime_or_monotonic(), &usec);

4e3e6679e8f73b83d38e4b20d8b025e12991d1cbPatrik Flykt if (r < 0)

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt return;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt (void) sd_event_add_time(e, &event->timeout_warning, clock_boottime_or_monotonic(),

c806ffb9592fa9a2b13a1f9f9be4c77cd5b211aaZbigniew Jędrzejewski-Szmek usec + arg_event_timeout_warn_usec, USEC_PER_SEC, on_event_timeout_warning, event);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt (void) sd_event_add_time(e, &event->timeout, clock_boottime_or_monotonic(),

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt usec + arg_event_timeout_usec, USEC_PER_SEC, on_event_timeout, event);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt}

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flyktstatic void manager_free(Manager *manager) {

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt if (!manager)

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt return;

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_builtin_exit(manager->udev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt sd_event_source_unref(manager->ctrl_event);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt sd_event_source_unref(manager->uevent_event);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt sd_event_source_unref(manager->inotify_event);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt udev_unref(manager->udev);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt sd_event_unref(manager->event);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt manager_workers_free(manager);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt event_queue_cleanup(manager, EVENT_UNDEF);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt udev_monitor_unref(manager->monitor);

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt udev_ctrl_unref(manager->ctrl);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt udev_ctrl_connection_unref(manager->ctrl_conn_blocking);

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt udev_list_cleanup(&manager->properties);

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt udev_rules_unref(manager->rules);

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt safe_close(manager->fd_inotify);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt safe_close_pair(manager->worker_watch);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt free(manager);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt}

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik FlyktDEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flyktstatic int worker_send_message(int fd) {

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt struct worker_message message = {};

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt return loop_write(fd, &message, sizeof(message), false);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt}

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flyktstatic void worker_spawn(Manager *manager, struct event *event) {

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt struct udev *udev = event->udev;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt _cleanup_udev_monitor_unref_ struct udev_monitor *worker_monitor = NULL;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt pid_t pid;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt int r = 0;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt /* listen for new events */

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt worker_monitor = udev_monitor_new_from_netlink(udev, NULL);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt if (worker_monitor == NULL)

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt return;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt /* allow the main daemon netlink address to send devices to the worker */

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt udev_monitor_allow_unicast_sender(worker_monitor, manager->monitor);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt r = udev_monitor_enable_receiving(worker_monitor);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt if (r < 0)

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt log_error_errno(r, "worker: could not enable receiving of device: %m");

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt pid = fork();

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt switch (pid) {

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt case 0: {

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt struct udev_device *dev = NULL;

926695f1b5f9395eeb416cc2f478a9cf75fdbeb4Thomas Hindoe Paaboel Andersen _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;

926695f1b5f9395eeb416cc2f478a9cf75fdbeb4Thomas Hindoe Paaboel Andersen int fd_monitor;

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt _cleanup_close_ int fd_signal = -1, fd_ep = -1;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt struct epoll_event ep_signal = { .events = EPOLLIN };

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt struct epoll_event ep_monitor = { .events = EPOLLIN };

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt sigset_t mask;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt /* take initial device from queue */

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt dev = event->dev;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt event->dev = NULL;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt unsetenv("NOTIFY_SOCKET");

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt manager_workers_free(manager);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt event_queue_cleanup(manager, EVENT_UNDEF);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager->monitor = udev_monitor_unref(manager->monitor);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager->ctrl_conn_blocking = udev_ctrl_connection_unref(manager->ctrl_conn_blocking);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager->ctrl = udev_ctrl_unref(manager->ctrl);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager->ctrl_conn_blocking = udev_ctrl_connection_unref(manager->ctrl_conn_blocking);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager->worker_watch[READ_END] = safe_close(manager->worker_watch[READ_END]);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager->ctrl_event = sd_event_source_unref(manager->ctrl_event);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager->uevent_event = sd_event_source_unref(manager->uevent_event);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt manager->inotify_event = sd_event_source_unref(manager->inotify_event);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt manager->event = sd_event_unref(manager->event);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt sigfillset(&mask);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt if (fd_signal < 0) {

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt r = log_error_errno(errno, "error creating signalfd %m");

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt goto out;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt }

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt ep_signal.data.fd = fd_signal;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt fd_monitor = udev_monitor_get_fd(worker_monitor);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt ep_monitor.data.fd = fd_monitor;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt fd_ep = epoll_create1(EPOLL_CLOEXEC);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt if (fd_ep < 0) {

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt r = log_error_errno(errno, "error creating epoll fd: %m");

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt goto out;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt }

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_signal, &ep_signal) < 0 ||

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_monitor, &ep_monitor) < 0) {

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt r = log_error_errno(errno, "fail to add fds to epoll: %m");

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt goto out;

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller }

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams /* request TERM signal if parent exits */

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt prctl(PR_SET_PDEATHSIG, SIGTERM);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt /* reset OOM score, we only protect the main daemon */

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt write_string_file("/proc/self/oom_score_adj", "0");

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt for (;;) {

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt struct udev_event *udev_event;

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt int fd_lock = -1;

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt assert(dev);

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt log_debug("seq %llu running", udev_device_get_seqnum(dev));

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt udev_event = udev_event_new(dev);

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt if (udev_event == NULL) {

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt r = -ENOMEM;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt goto out;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt }

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt if (arg_exec_delay > 0)

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt udev_event->exec_delay = arg_exec_delay;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt /*

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (!streq_ptr(udev_device_get_action(dev), "remove") &&

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt streq_ptr("block", udev_device_get_subsystem(dev)) &&

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt !startswith(udev_device_get_sysname(dev), "dm-") &&

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt !startswith(udev_device_get_sysname(dev), "md")) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt struct udev_device *d = dev;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (streq_ptr("partition", udev_device_get_devtype(d)))

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt d = udev_device_get_parent(d);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt if (d) {

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt fd_lock = open(udev_device_get_devnode(d), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (fd_lock >= 0 && flock(fd_lock, LOCK_SH|LOCK_NB) < 0) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt log_debug_errno(errno, "Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d));

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt fd_lock = safe_close(fd_lock);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt goto skip;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt /* needed for renaming netifs */

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt udev_event->rtnl = rtnl;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt /* apply rules, create node, symlinks */

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt udev_event_execute_rules(udev_event,

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt arg_event_timeout_usec, arg_event_timeout_warn_usec,

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt &manager->properties,

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt manager->rules);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt udev_event_execute_run(udev_event,

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt arg_event_timeout_usec, arg_event_timeout_warn_usec);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (udev_event->rtnl)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt /* in case rtnl was initialized */

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt rtnl = sd_netlink_ref(udev_event->rtnl);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt /* apply/restore inotify watch */

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt if (udev_event->inotify_watch) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_watch_begin(udev, dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_device_update_db(dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt safe_close(fd_lock);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt /* send processed event back to libudev listeners */

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_monitor_send_device(worker_monitor, NULL, dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flyktskip:

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt log_debug("seq %llu processed", udev_device_get_seqnum(dev));

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt /* send udevd the result of the event execution */

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt r = worker_send_message(manager->worker_watch[WRITE_END]);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (r < 0)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt log_error_errno(r, "failed to send result of seq %llu to main daemon: %m",

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_device_get_seqnum(dev));

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_device_unref(dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt dev = NULL;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_event_unref(udev_event);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt /* wait for more device messages from main udevd, or term signal */

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt while (dev == NULL) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt struct epoll_event ev[4];

4b4923e65423e60d755841b5b264730e8f3deab3Tom Gundersen int fdcount;

5e91345094a9e983e7abb2313334e7808bcd2cc2Tom Gundersen int i;

513a6fa8679510ea1b55967bdb482dd5f8a39f21Ronny Chevalier

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt if (fdcount < 0) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (errno == EINTR)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt continue;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt r = log_error_errno(errno, "failed to poll: %m");

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt goto out;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt for (i = 0; i < fdcount; i++) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (ev[i].data.fd == fd_monitor && ev[i].events & EPOLLIN) {

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt dev = udev_monitor_receive_device(worker_monitor);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt break;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt } else if (ev[i].data.fd == fd_signal && ev[i].events & EPOLLIN) {

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt struct signalfd_siginfo fdsi;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt ssize_t size;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt size = read(fd_signal, &fdsi, sizeof(struct signalfd_siginfo));

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt if (size != sizeof(struct signalfd_siginfo))

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt continue;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt switch (fdsi.ssi_signo) {

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt case SIGTERM:

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt goto out;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flyktout:

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt udev_device_unref(dev);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt manager_free(manager);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt log_close();

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt _exit(r < 0 ? EXIT_FAILURE : EXIT_SUCCESS);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt }

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt case -1:

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt event->state = EVENT_QUEUED;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt log_error_errno(errno, "fork of child failed: %m");

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt break;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt default:

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt {

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt struct worker *worker;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt r = worker_new(&worker, manager, worker_monitor, pid);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt if (r < 0)

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt return;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt worker_attach_event(worker, event);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt log_debug("seq %llu forked new worker ["PID_FMT"]", udev_device_get_seqnum(event->dev), pid);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt break;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt }

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt }

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt}

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flyktstatic void event_run(Manager *manager, struct event *event) {

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt struct worker *worker;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt Iterator i;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt assert(manager);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt assert(event);

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt HASHMAP_FOREACH(worker, manager->workers, i) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt ssize_t count;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (worker->state != WORKER_IDLE)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt continue;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt count = udev_monitor_send_device(manager->monitor, worker->monitor, event->dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (count < 0) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt log_error_errno(errno, "worker ["PID_FMT"] did not accept message %zi (%m), kill it",

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt worker->pid, count);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt kill(worker->pid, SIGKILL);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt worker->state = WORKER_KILLED;

fa94c34b083b5b4019975624453e53d0cbad2a5dTom Gundersen continue;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt worker_attach_event(worker, event);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt return;

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt }

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt if (hashmap_size(manager->workers) >= arg_children_max) {

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt if (arg_children_max > 1)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt log_debug("maximum number (%i) of children reached", hashmap_size(manager->workers));

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt return;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt /* start new worker and pass initial device */

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt worker_spawn(manager, event);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt}

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flyktstatic int event_queue_insert(Manager *manager, struct udev_device *dev) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt struct event *event;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt int r;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt assert(manager);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt assert(dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt /* only one process can add events to the queue */

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (manager->pid == 0)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt manager->pid = getpid();

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt assert(manager->pid == getpid());

fa94c34b083b5b4019975624453e53d0cbad2a5dTom Gundersen

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event = new0(struct event, 1);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (!event)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt return -ENOMEM;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->udev = udev_device_get_udev(dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->manager = manager;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->dev = dev;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->dev_kernel = udev_device_shallow_clone(dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_device_copy_properties(event->dev_kernel, dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->seqnum = udev_device_get_seqnum(dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->devpath = udev_device_get_devpath(dev);

356779df90a2ecab5da2cb310ad0f8ebc9ca9f46Lennart Poettering event->devpath_len = strlen(event->devpath);

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen event->devpath_old = udev_device_get_devpath_old(dev);

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen event->devnum = udev_device_get_devnum(dev);

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen event->is_block = streq("block", udev_device_get_subsystem(dev));

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->ifindex = udev_device_get_ifindex(dev);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt log_debug("seq %llu queued, '%s' '%s'", udev_device_get_seqnum(dev),

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_device_get_action(dev), udev_device_get_subsystem(dev));

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt event->state = EVENT_QUEUED;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

fa94c34b083b5b4019975624453e53d0cbad2a5dTom Gundersen if (udev_list_node_is_empty(&manager->events)) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt r = touch("/run/udev/queue");

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (r < 0)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt log_warning_errno(r, "could not touch /run/udev/queue: %m");

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt udev_list_node_append(&event->node, &manager->events);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt return 0;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt}

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersenstatic void manager_kill_workers(Manager *manager) {

356779df90a2ecab5da2cb310ad0f8ebc9ca9f46Lennart Poettering struct worker *worker;

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen Iterator i;

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt assert(manager);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt HASHMAP_FOREACH(worker, manager->workers, i) {

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt if (worker->state == WORKER_KILLED)

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt continue;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt worker->state = WORKER_KILLED;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt kill(worker->pid, SIGTERM);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt}

cfb5b3805759e63dc5e0cae6e92e1df885b5c5b6Tom Gundersen

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flyktstatic bool is_devpath_busy(Manager *manager, struct event *event) {

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt struct udev_list_node *loop;

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt size_t common;

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt /* check if queue contains events we depend on */

cfb5b3805759e63dc5e0cae6e92e1df885b5c5b6Tom Gundersen udev_list_node_foreach(loop, &manager->events) {

cfb5b3805759e63dc5e0cae6e92e1df885b5c5b6Tom Gundersen struct event *loop_event = node_to_event(loop);

cfb5b3805759e63dc5e0cae6e92e1df885b5c5b6Tom Gundersen

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt /* we already found a later event, earlier can not block us, no need to check again */

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt if (loop_event->seqnum < event->delaying_seqnum)

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt continue;

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* event we checked earlier still exists, no need to check again */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (loop_event->seqnum == event->delaying_seqnum)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return true;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

44481a8b537839cd9ffead4d261491641f5b5260Zbigniew Jędrzejewski-Szmek /* found ourself, no later event can block us */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (loop_event->seqnum >= event->seqnum)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt break;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* check major/minor */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (major(event->devnum) != 0 && event->devnum == loop_event->devnum && event->is_block == loop_event->is_block)

44481a8b537839cd9ffead4d261491641f5b5260Zbigniew Jędrzejewski-Szmek return true;

44481a8b537839cd9ffead4d261491641f5b5260Zbigniew Jędrzejewski-Szmek

44481a8b537839cd9ffead4d261491641f5b5260Zbigniew Jędrzejewski-Szmek /* check network device ifindex */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (event->ifindex != 0 && event->ifindex == loop_event->ifindex)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return true;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* check our old name */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (event->devpath_old != NULL && streq(loop_event->devpath, event->devpath_old)) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event->delaying_seqnum = loop_event->seqnum;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return true;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* compare devpath */

66eac1201a9c1596f5901f8dbbf24bda7e350878Dan Williams common = MIN(loop_event->devpath_len, event->devpath_len);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* one devpath is contained in the other? */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (memcmp(loop_event->devpath, event->devpath, common) != 0)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt continue;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* identical device event found */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (loop_event->devpath_len == event->devpath_len) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* devices names might have changed/swapped in the meantime */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (major(event->devnum) != 0 && (event->devnum != loop_event->devnum || event->is_block != loop_event->is_block))

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt continue;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (event->ifindex != 0 && event->ifindex != loop_event->ifindex)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt continue;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event->delaying_seqnum = loop_event->seqnum;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return true;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* parent device event found */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (event->devpath[common] == '/') {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event->delaying_seqnum = loop_event->seqnum;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return true;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* child device event found */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (loop_event->devpath[common] == '/') {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event->delaying_seqnum = loop_event->seqnum;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return true;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* no matching device */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt continue;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return false;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt}

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flyktstatic int on_exit_timeout(sd_event_source *s, uint64_t usec, void *userdata) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt Manager *manager = userdata;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt assert(manager);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt log_error_errno(ETIMEDOUT, "giving up waiting for workers to finish");

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt sd_event_exit(manager->event, -ETIMEDOUT);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return 1;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt}

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flyktstatic void manager_exit(Manager *manager) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt uint64_t usec;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt int r;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt manager->exit = true;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt sd_notify(false,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt "STOPPING=1\n"

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt "STATUS=Starting shutdown...");

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* close sources of new events and discard buffered events */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->ctrl_event = sd_event_source_unref(manager->ctrl_event);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->ctrl = udev_ctrl_unref(manager->ctrl);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->inotify_event = sd_event_source_unref(manager->inotify_event);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->fd_inotify = safe_close(manager->fd_inotify);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->uevent_event = sd_event_source_unref(manager->uevent_event);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->monitor = udev_monitor_unref(manager->monitor);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* discard queued events and kill workers */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event_queue_cleanup(manager, EVENT_QUEUED);

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt manager_kill_workers(manager);

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt r = sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec);

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt if (r < 0)

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt return;

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt r = sd_event_add_time(manager->event, NULL, clock_boottime_or_monotonic(),

7bd8e95d44977833d0de3fc4e893eb3bc84351d6Patrik Flykt usec + 30 * USEC_PER_SEC, USEC_PER_SEC, on_exit_timeout, manager);

7bd8e95d44977833d0de3fc4e893eb3bc84351d6Patrik Flykt if (r < 0)

7bd8e95d44977833d0de3fc4e893eb3bc84351d6Patrik Flykt return;

7bd8e95d44977833d0de3fc4e893eb3bc84351d6Patrik Flykt}

7bd8e95d44977833d0de3fc4e893eb3bc84351d6Patrik Flykt

7bd8e95d44977833d0de3fc4e893eb3bc84351d6Patrik Flyktstatic void manager_reload(Manager *manager) {

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt assert(manager);

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt sd_notify(false,

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt "RELOADING=1\n"

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt "STATUS=Flushing configuration...");

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt

5da1b97f3c3d15521f2dcfbc18eccd6580122ebcPatrik Flykt manager_kill_workers(manager);

6599680e2d33597f0f11a99e1c3c957b42418568Patrik Flykt manager->rules = udev_rules_unref(manager->rules);

6599680e2d33597f0f11a99e1c3c957b42418568Patrik Flykt udev_builtin_exit(manager->udev);

6599680e2d33597f0f11a99e1c3c957b42418568Patrik Flykt

6599680e2d33597f0f11a99e1c3c957b42418568Patrik Flykt sd_notify(false,

6599680e2d33597f0f11a99e1c3c957b42418568Patrik Flykt "READY=1\n"

6599680e2d33597f0f11a99e1c3c957b42418568Patrik Flykt "STATUS=Processing...");

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flykt}

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flykt

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flyktstatic void event_queue_start(Manager *manager) {

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flykt struct udev_list_node *loop;

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flykt usec_t usec;

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flykt int r;

41e4615d4f4f5c61afa84ba857f23c0ac496687bPatrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt assert(manager);

6599680e2d33597f0f11a99e1c3c957b42418568Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (udev_list_node_is_empty(&manager->events) ||

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->exit || manager->stop_exec_queue)

c47e8936a43ce546e8a74fa569e9fbfae6c64be7Patrik Flykt return;

c47e8936a43ce546e8a74fa569e9fbfae6c64be7Patrik Flykt

c47e8936a43ce546e8a74fa569e9fbfae6c64be7Patrik Flykt r = sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec);

c47e8936a43ce546e8a74fa569e9fbfae6c64be7Patrik Flykt if (r >= 0) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* check for changed config, every 3 seconds at most */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (manager->last_usec == 0 ||

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt (usec - manager->last_usec) > 3 * USEC_PER_SEC) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (udev_rules_check_timestamp(manager->rules) ||

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt udev_builtin_validate(manager->udev))

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt manager_reload(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt manager->last_usec = usec;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt }

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt }

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt udev_builtin_init(manager->udev);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (!manager->rules) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt manager->rules = udev_rules_new(manager->udev, arg_resolve_names);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (!manager->rules)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt return;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt udev_list_node_foreach(loop, &manager->events) {

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt struct event *event = node_to_event(loop);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (event->state != EVENT_QUEUED)

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt continue;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt /* do not start event if parent or child event is still running */

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (is_devpath_busy(manager, event))

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt continue;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt event_run(manager, event);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt}

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flyktstatic void event_queue_cleanup(Manager *manager, enum event_state match_type) {

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt struct udev_list_node *loop, *tmp;

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt udev_list_node_foreach_safe(loop, tmp, &manager->events) {

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt struct event *event = node_to_event(loop);

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt if (match_type != EVENT_UNDEF && match_type != event->state)

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt continue;

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt event_free(event);

5364f729ba9616cd9fdab8d5413fbc25a1af3a57Lennart Poettering }

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt}

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flyktstatic int on_worker(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

9d89d1ae71cb298218e35a69d6b70e2c94de5271Patrik Flykt Manager *manager = userdata;

9d89d1ae71cb298218e35a69d6b70e2c94de5271Patrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt assert(manager);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt for (;;) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt struct worker_message msg;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct iovec iovec = {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt .iov_base = &msg,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt .iov_len = sizeof(msg),

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt };

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt union {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct cmsghdr cmsghdr;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt } control = {};

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct msghdr msghdr = {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt .msg_iov = &iovec,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt .msg_iovlen = 1,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt .msg_control = &control,

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt .msg_controllen = sizeof(control),

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt };

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct cmsghdr *cmsg;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt ssize_t size;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct ucred *ucred = NULL;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct worker *worker;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt size = recvmsg(fd, &msghdr, MSG_DONTWAIT);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (size < 0) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (errno == EINTR)

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt continue;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt else if (errno == EAGAIN)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* nothing more to read */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt break;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return log_error_errno(errno, "failed to receive message: %m");

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt } else if (size != sizeof(struct worker_message)) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt log_warning_errno(EIO, "ignoring worker message with invalid size %zi bytes", size);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt continue;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt }

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt CMSG_FOREACH(cmsg, &msghdr) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (cmsg->cmsg_level == SOL_SOCKET &&

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt cmsg->cmsg_type == SCM_CREDENTIALS &&

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt ucred = (struct ucred*) CMSG_DATA(cmsg);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (!ucred || ucred->pid <= 0) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt log_warning_errno(EIO, "ignoring worker message without valid PID");

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt continue;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* lookup worker who sent the signal */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt worker = hashmap_get(manager->workers, UINT_TO_PTR(ucred->pid));

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (!worker) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt log_debug("worker ["PID_FMT"] returned, but is no longer tracked", ucred->pid);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt continue;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (worker->state != WORKER_KILLED)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt worker->state = WORKER_IDLE;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* worker returned */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event_free(worker->event);

6ec60d20724d2a32e20d25ef75d2af178c242bc2Ronny Chevalier }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* we have free workers, try to schedule events */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event_queue_start(manager);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return 1;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt}

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flyktstatic int on_uevent(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt Manager *manager = userdata;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt struct udev_device *dev;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt int r;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt assert(manager);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt dev = udev_monitor_receive_device(manager->monitor);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (dev) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt udev_device_ensure_usec_initialized(dev, NULL);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt r = event_queue_insert(manager, dev);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (r < 0)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt udev_device_unref(dev);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt else

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt /* we have fresh events, try to schedule them */

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt event_queue_start(manager);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return 1;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt}

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flyktstatic int on_ctrl_msg(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt Manager *manager = userdata;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt _cleanup_udev_ctrl_connection_unref_ struct udev_ctrl_connection *ctrl_conn = NULL;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt _cleanup_udev_ctrl_msg_unref_ struct udev_ctrl_msg *ctrl_msg = NULL;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt const char *str;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt int i;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt ctrl_conn = udev_ctrl_get_connection(manager->ctrl);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt if (!ctrl_conn)

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt return 1;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt ctrl_msg = udev_ctrl_receive_msg(ctrl_conn);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (!ctrl_msg)

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt return 1;

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt i = udev_ctrl_get_set_log_level(ctrl_msg);

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt if (i >= 0) {

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i);

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt log_set_max_level(i);

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt manager_kill_workers(manager);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt }

ed6ee21953dac9c78383da00bc4514ece6b75ab5Patrik Flykt

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt log_debug("udevd message (STOP_EXEC_QUEUE) received");

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt manager->stop_exec_queue = true;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (udev_ctrl_get_start_exec_queue(ctrl_msg) > 0) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt log_debug("udevd message (START_EXEC_QUEUE) received");

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt manager->stop_exec_queue = false;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt event_queue_start(manager);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (udev_ctrl_get_reload(ctrl_msg) > 0) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt log_debug("udevd message (RELOAD) received");

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt manager_reload(manager);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt str = udev_ctrl_get_set_env(ctrl_msg);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (str != NULL) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt _cleanup_free_ char *key = NULL;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt key = strdup(str);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (key) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt char *val;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt val = strchr(key, '=');

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (val != NULL) {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt val[0] = '\0';

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt val = &val[1];

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt if (val[0] == '\0') {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt log_debug("udevd message (ENV) received, unset '%s'", key);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt udev_list_entry_add(&manager->properties, key, NULL);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt } else {

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt log_debug("udevd message (ENV) received, set '%s=%s'", key, val);

631bbe71298ec892f77f44f94feb612646fe6853Patrik Flykt udev_list_entry_add(&manager->properties, key, val);

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt }

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt } else

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt log_error("wrong key format '%s'", key);

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt }

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt manager_kill_workers(manager);

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt i = udev_ctrl_get_set_children_max(ctrl_msg);

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt if (i >= 0) {

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i", i);

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt arg_children_max = i;

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt }

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt if (udev_ctrl_get_ping(ctrl_msg) > 0)

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt log_debug("udevd message (SYNC) received");

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt if (udev_ctrl_get_exit(ctrl_msg) > 0) {

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt log_debug("udevd message (EXIT) received");

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt manager_exit(manager);

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt /* keep reference to block the client until we exit

38a03f06a7393d2721c23f23f0589d2f6d0904afLennart Poettering manager->ctrl_conn_blocking = udev_ctrl_connection_ref(ctrl_conn);

38a03f06a7393d2721c23f23f0589d2f6d0904afLennart Poettering }

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt return 1;

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt}

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flyktstatic int synthesize_change(struct udev_device *dev) {

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt char filename[UTIL_PATH_SIZE];

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt int r;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen if (streq_ptr("block", udev_device_get_subsystem(dev)) &&

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt streq_ptr("disk", udev_device_get_devtype(dev)) &&

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt !startswith(udev_device_get_sysname(dev), "dm-")) {

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt bool part_table_read = false;

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt bool has_partitions = false;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt int fd;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt struct udev *udev = udev_device_get_udev(dev);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;

7246333cb803b03440d3bd0bdaa233564d09b5aePatrik Flykt struct udev_list_entry *item;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt /*

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt fd = open(udev_device_get_devnode(dev), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (fd >= 0) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt r = flock(fd, LOCK_EX|LOCK_NB);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (r >= 0)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt r = ioctl(fd, BLKRRPART, 0);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt close(fd);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (r >= 0)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt part_table_read = true;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt /* search for partitions */

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt e = udev_enumerate_new(udev);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (!e)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt return -ENOMEM;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt r = udev_enumerate_add_match_parent(e, dev);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (r < 0)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt return r;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt r = udev_enumerate_add_match_subsystem(e, "block");

fa94c34b083b5b4019975624453e53d0cbad2a5dTom Gundersen if (r < 0)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt return r;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt r = udev_enumerate_scan_devices(e);

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (r < 0)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt return r;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt _cleanup_udev_device_unref_ struct udev_device *d = NULL;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));

356779df90a2ecab5da2cb310ad0f8ebc9ca9f46Lennart Poettering if (!d)

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen continue;

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen if (!streq_ptr("partition", udev_device_get_devtype(d)))

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt continue;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt has_partitions = true;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt break;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt }

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt /*

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (part_table_read && has_partitions)

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt return 0;

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt /*

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);

356779df90a2ecab5da2cb310ad0f8ebc9ca9f46Lennart Poettering write_string_file(filename, "change");

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen _cleanup_udev_device_unref_ struct udev_device *d = NULL;

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt

3dc34fcc97b41f8b7b019027225b121dfbb9871dPatrik Flykt d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));

a34b57c0d43b8bf819ccd4f62c314b41b625454dPatrik Flykt if (!d)

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt continue;

a9aff3615b430f86bd0a824214d95f634efaf894Patrik Flykt

c3e2adeaba8e043caed0ef139eeaea016bd152d0Patrik Flykt if (!streq_ptr("partition", udev_device_get_devtype(d)))

346e13a25dc6f76d3bc9d8decd40dc4782b02d2aPatrik Flykt continue;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt log_debug("device %s closed, synthesising partition '%s' 'change'",

fa94c34b083b5b4019975624453e53d0cbad2a5dTom Gundersen udev_device_get_devnode(dev), udev_device_get_devnode(d));

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt strscpyl(filename, sizeof(filename), udev_device_get_syspath(d), "/uevent", NULL);

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt write_string_file(filename, "change");

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt return 0;

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt }

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));

d1b0afe3653b4316a6361d204169620726d468a0Patrik Flykt strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);

356779df90a2ecab5da2cb310ad0f8ebc9ca9f46Lennart Poettering write_string_file(filename, "change");

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen return 0;

9021bb9f935c93b516b10c88db2a212a9e3a8140Tom Gundersen}

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flyktstatic int on_inotify(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt Manager *manager = userdata;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt union inotify_event_buffer buffer;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt struct inotify_event *e;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt ssize_t l;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt assert(manager);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt l = read(fd, &buffer, sizeof(buffer));

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (l < 0) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (errno == EAGAIN || errno == EINTR)

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt return 1;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt return log_error_errno(errno, "Failed to read inotify fd: %m");

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt }

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt FOREACH_INOTIFY_EVENT(e, buffer, l) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt _cleanup_udev_device_unref_ struct udev_device *dev = NULL;

c806ffb9592fa9a2b13a1f9f9be4c77cd5b211aaZbigniew Jędrzejewski-Szmek

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt dev = udev_watch_lookup(manager->udev, e->wd);

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt if (!dev)

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt continue;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt log_debug("inotify event: %x for %s", e->mask, udev_device_get_devnode(dev));

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt if (e->mask & IN_CLOSE_WRITE) {

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt synthesize_change(dev);

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller

cc22955cfefb4bd6e7a135f1ec95fb5a07ba9ce3Thomas Haller /* settle might be waiting on us to determine the queue

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt on_uevent(NULL, -1, 0, manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt } else if (e->mask & IN_IGNORED)

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt udev_watch_end(manager->udev, dev);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt }

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt return 1;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt}

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flyktstatic int on_sigterm(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt Manager *manager = userdata;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt manager_exit(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt return 1;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt}

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flyktstatic int on_sighup(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt Manager *manager = userdata;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt manager_reload(manager);

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt return 1;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt}

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flyktstatic int on_sigchld(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt Manager *manager = userdata;

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt

bbfa43ca37df0718287c25a8e39ee7477ebf33f6Patrik Flykt assert(manager);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt for (;;) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt pid_t pid;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt int status;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt struct worker *worker;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt pid = waitpid(-1, &status, WNOHANG);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (pid <= 0)

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt break;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt worker = hashmap_get(manager->workers, UINT_TO_PTR(pid));

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (!worker) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_warning("worker ["PID_FMT"] is unknown, ignoring", pid);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt continue;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt }

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (WIFEXITED(status)) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (WEXITSTATUS(status) == 0)

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_debug("worker ["PID_FMT"] exited", pid);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt else

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_warning("worker ["PID_FMT"] exited with return code %i", pid, WEXITSTATUS(status));

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt } else if (WIFSIGNALED(status)) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_warning("worker ["PID_FMT"] terminated by signal %i (%s)", pid, WTERMSIG(status), strsignal(WTERMSIG(status)));

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt } else if (WIFSTOPPED(status)) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_info("worker ["PID_FMT"] stopped", pid);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt continue;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt } else if (WIFCONTINUED(status)) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_info("worker ["PID_FMT"] continued", pid);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt continue;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt } else

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_warning("worker ["PID_FMT"] exit with status 0x%04x", pid, status);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (worker->event) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_error("worker ["PID_FMT"] failed while handling '%s'", pid, worker->event->devpath);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt /* delete state from disk */

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt udev_device_delete_db(worker->event->dev);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt udev_device_tag_index(worker->event->dev, NULL, false);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt /* forward kernel event without amending it */

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt udev_monitor_send_device(manager->monitor, NULL, worker->event->dev_kernel);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt }

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt }

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt worker_free(worker);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt }

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

f0c4b1c3fd827b429ba36aa45fd39e0a023cbf2cTom Gundersen /* we can start new workers, try to schedule events */

c806ffb9592fa9a2b13a1f9f9be4c77cd5b211aaZbigniew Jędrzejewski-Szmek event_queue_start(manager);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt return 1;

62e3d1aed512d68cab1fc9b509e813a1fa2b3790Lennart Poettering}

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flyktstatic int on_post(sd_event_source *s, void *userdata) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt Manager *manager = userdata;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt int r;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt assert(manager);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (udev_list_node_is_empty(&manager->events)) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt /* no pending events */

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (!hashmap_isempty(manager->workers)) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt /* there are idle workers */

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt log_debug("cleanup idle workers");

3f0c075f8ef3344da5a6bda524540201f9204e61Patrik Flykt manager_kill_workers(manager);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt } else {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt /* we are idle */

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (manager->exit) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt r = sd_event_exit(manager->event, 0);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (r < 0)

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt return r;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt } else if (manager->cgroup)

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt /* cleanup possible left-over processes in our cgroup */

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt cg_kill(SYSTEMD_CGROUP_CONTROLLER, manager->cgroup, SIGKILL, false, true, NULL);

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt }

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt }

f12abb48fc510b8b349c05e35ba048134debaf25Patrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt return 1;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt}

c806ffb9592fa9a2b13a1f9f9be4c77cd5b211aaZbigniew Jędrzejewski-Szmek

c806ffb9592fa9a2b13a1f9f9be4c77cd5b211aaZbigniew Jędrzejewski-Szmekstatic int listen_fds(int *rctrl, int *rnetlink) {

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt _cleanup_udev_unref_ struct udev *udev = NULL;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt int ctrl_fd = -1, netlink_fd = -1;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt int fd, n, r;

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt assert(rctrl);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt assert(rnetlink);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt n = sd_listen_fds(true);

da6fe470e17fa02f3adedc779585caf8669252bdPatrik Flykt if (n < 0)

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt return n;

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt for (fd = SD_LISTEN_FDS_START; fd < n + SD_LISTEN_FDS_START; fd++) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (sd_is_socket(fd, AF_LOCAL, SOCK_SEQPACKET, -1)) {

139b011ab81ccea1d51f09e0261a1c390115c6ffPatrik Flykt if (ctrl_fd >= 0)

return -EINVAL;

ctrl_fd = fd;

continue;

}

if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1)) {

if (netlink_fd >= 0)

return -EINVAL;

netlink_fd = fd;

continue;

}

return -EINVAL;

}

if (ctrl_fd < 0) {

_cleanup_udev_ctrl_unref_ struct udev_ctrl *ctrl = NULL;

udev = udev_new();

if (!udev)

return -ENOMEM;

ctrl = udev_ctrl_new(udev);

if (!ctrl)

return log_error_errno(EINVAL, "error initializing udev control socket");

r = udev_ctrl_enable_receiving(ctrl);

if (r < 0)