b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen#include <stddef.h>

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen#include <signal.h>

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen#include <unistd.h>

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen#include <errno.h>

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen#include <stdio.h>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <stdlib.h>

b5efdb8af40ea759a1ea584c1bc44ecc81dd00ceLennart Poettering#include <stdbool.h>

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen#include <string.h>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <fcntl.h>

3ffd4af22052963e7a29431721ee204e634bea75Lennart Poettering#include <getopt.h>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <sys/file.h>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <sys/time.h>

07630cea1f3a845c09309f197ac7c4f11edd3b62Lennart Poettering#include <sys/prctl.h>

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen#include <sys/socket.h>

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering#include <sys/signalfd.h>

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering#include <sys/epoll.h>

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen#include <sys/mount.h>

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include <sys/wait.h>

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include <sys/stat.h>

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include <sys/ioctl.h>

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include <sys/inotify.h>

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "sd-daemon.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "sd-event.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "terminal-util.h"

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen#include "signal-util.h"

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen#include "event-util.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "netlink-util.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "cgroup-util.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "process-util.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "dev-setup.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "fileio.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "selinux-util.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "udev.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "udev-util.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "formats-util.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen#include "hashmap.h"

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersenstatic bool arg_debug = false;

99634696183dfabae20104e58157c69029a11594Tom Gundersenstatic int arg_daemonize = false;

99634696183dfabae20104e58157c69029a11594Tom Gundersenstatic int arg_resolve_names = 1;

99634696183dfabae20104e58157c69029a11594Tom Gundersenstatic unsigned arg_children_max;

99634696183dfabae20104e58157c69029a11594Tom Gundersenstatic int arg_exec_delay;

99634696183dfabae20104e58157c69029a11594Tom Gundersenstatic usec_t arg_event_timeout_usec = 180 * USEC_PER_SEC;

99634696183dfabae20104e58157c69029a11594Tom Gundersenstatic usec_t arg_event_timeout_warn_usec = 180 * USEC_PER_SEC / 3;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersentypedef struct Manager {

99634696183dfabae20104e58157c69029a11594Tom Gundersen struct udev *udev;

99634696183dfabae20104e58157c69029a11594Tom Gundersen sd_event *event;

99634696183dfabae20104e58157c69029a11594Tom Gundersen Hashmap *workers;

99634696183dfabae20104e58157c69029a11594Tom Gundersen struct udev_list_node events;

99634696183dfabae20104e58157c69029a11594Tom Gundersen const char *cgroup;

99634696183dfabae20104e58157c69029a11594Tom Gundersen pid_t pid; /* the process that originally allocated the manager object */

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen struct udev_rules *rules;

99634696183dfabae20104e58157c69029a11594Tom Gundersen struct udev_list properties;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen struct udev_monitor *monitor;

99634696183dfabae20104e58157c69029a11594Tom Gundersen struct udev_ctrl *ctrl;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct udev_ctrl_connection *ctrl_conn_blocking;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen int fd_inotify;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen int worker_watch[2];

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen sd_event_source *ctrl_event;

99634696183dfabae20104e58157c69029a11594Tom Gundersen sd_event_source *uevent_event;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen sd_event_source *inotify_event;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen usec_t last_usec;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen bool stop_exec_queue:1;

99634696183dfabae20104e58157c69029a11594Tom Gundersen bool exit:1;

99634696183dfabae20104e58157c69029a11594Tom Gundersen} Manager;

99634696183dfabae20104e58157c69029a11594Tom Gundersen

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersenenum event_state {

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen EVENT_UNDEF,

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen EVENT_QUEUED,

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen EVENT_RUNNING,

04c0136989b7eb896bfb0fb176e11233d69e1453Lennart Poettering};

756775814cf69471f74ce853745bba69f2ba94efThomas Hindoe Paaboel Andersen

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersenstruct event {

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen struct udev_list_node node;

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen Manager *manager;

7c16313f11e3953f3fe4dbf544f2d36f58d14138Tom Gundersen struct udev *udev;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen struct udev_device *dev;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering struct udev_device *dev_kernel;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering struct worker *worker;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering enum event_state state;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering unsigned long long int delaying_seqnum;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering unsigned long long int seqnum;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering const char *devpath;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen size_t devpath_len;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen const char *devpath_old;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen dev_t devnum;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen int ifindex;

b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen bool is_block;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen sd_event_source *timeout_warning;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen sd_event_source *timeout;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen};

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersenstatic inline struct event *node_to_event(struct udev_list_node *node) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return container_of(node, struct event, node);

1e2527a6fede996a429bd44b30a15e76ee293437Tom Gundersen}

b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersenstatic void event_queue_cleanup(Manager *manager, enum event_state type);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersenenum worker_state {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen WORKER_UNDEF,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen WORKER_RUNNING,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen WORKER_IDLE,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen WORKER_KILLED,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen};

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersenstruct worker {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen Manager *manager;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct udev_list_node node;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen int refcount;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen pid_t pid;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct udev_monitor *monitor;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen enum worker_state state;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct event *event;

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt};

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidtstruct worker_message {

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidt};

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersenstatic void event_free(struct event *event) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen int r;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (!event)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen udev_list_node_remove(&event->node);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen udev_device_unref(event->dev);

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering udev_device_unref(event->dev_kernel);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering sd_event_source_unref(event->timeout_warning);

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering sd_event_source_unref(event->timeout);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering if (event->worker)

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering event->worker->event = NULL;

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering assert(event->manager);

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (udev_list_node_is_empty(&event->manager->events)) {

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering /* only clean up the queue from the process that created it */

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (event->manager->pid == getpid()) {

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering r = unlink("/run/udev/queue");

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (r < 0)

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering log_warning_errno(errno, "could not unlink /run/udev/queue: %m");

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering }

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering free(event);

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering}

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poetteringstatic void worker_free(struct worker *worker) {

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering if (!worker)

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering return;

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering

3bdace9bf779ce051f00c14914b35c3a26164aa9Lennart Poettering assert(worker->manager);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen hashmap_remove(worker->manager->workers, UINT_TO_PTR(worker->pid));

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen udev_monitor_unref(worker->monitor);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen event_free(worker->event);

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen

4afd3348c7506dd1d36305b7bcb9feb8952b9d6bLennart Poettering free(worker);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen}

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersenstatic void manager_workers_free(Manager *manager) {

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen struct worker *worker;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen Iterator i;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(manager);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

3733eec3e292e4ddb4cba5eb8d3bd8cbee7102d8Lennart Poettering HASHMAP_FOREACH(worker, manager->workers, i)

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen worker_free(worker);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen manager->workers = hashmap_free(manager->workers);

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen}

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering

d5099efc47d4e6ac60816b5381a5f607ab03f06eMichal Schmidtstatic int worker_new(struct worker **ret, Manager *manager, struct udev_monitor *worker_monitor, pid_t pid) {

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering _cleanup_free_ struct worker *worker = NULL;

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering int r;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(ret);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(manager);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(worker_monitor);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(pid > 1);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen worker = new0(struct worker, 1);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen if (!worker)

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen return -ENOMEM;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen worker->refcount = 1;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen worker->manager = manager;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen /* close monitor, but keep address around */

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen udev_monitor_disconnect(worker_monitor);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen worker->monitor = udev_monitor_ref(worker_monitor);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen worker->pid = pid;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen r = hashmap_ensure_allocated(&manager->workers, NULL);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (r < 0)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return r;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen r = hashmap_put(manager->workers, UINT_TO_PTR(pid), worker);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen if (r < 0)

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return r;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen *ret = worker;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen worker = NULL;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen return 0;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen}

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersenstatic int on_event_timeout(sd_event_source *s, uint64_t usec, void *userdata) {

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen struct event *event = userdata;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(event);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen assert(event->worker);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen kill_and_sigcont(event->worker->pid, SIGKILL);

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen event->worker->state = WORKER_KILLED;

b44cd8821087f2afebf85fec5b588f5720a9415cTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen log_error("seq %llu '%s' killed", udev_device_get_seqnum(event->dev), event->devpath);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen return 1;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen}

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersenstatic int on_event_timeout_warning(sd_event_source *s, uint64_t usec, void *userdata) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen struct event *event = userdata;

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen assert(event);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen log_warning("seq %llu '%s' is taking a long time", udev_device_get_seqnum(event->dev), event->devpath);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen return 1;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen}

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersenstatic void worker_attach_event(struct worker *worker, struct event *event) {

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen sd_event *e;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen uint64_t usec;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(worker);

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering assert(worker->manager);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(!event->worker);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(!worker->event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering worker->state = WORKER_RUNNING;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen worker->event = event;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen event->state = EVENT_RUNNING;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen event->worker = worker;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen e = worker->manager->event;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert_se(sd_event_now(e, clock_boottime_or_monotonic(), &usec) >= 0);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen (void) sd_event_add_time(e, &event->timeout_warning, clock_boottime_or_monotonic(),

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen usec + arg_event_timeout_warn_usec, USEC_PER_SEC, on_event_timeout_warning, event);

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen (void) sd_event_add_time(e, &event->timeout, clock_boottime_or_monotonic(),

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen usec + arg_event_timeout_usec, USEC_PER_SEC, on_event_timeout, event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen}

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersenstatic void manager_free(Manager *manager) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (!manager)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_builtin_exit(manager->udev);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen sd_event_source_unref(manager->ctrl_event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen sd_event_source_unref(manager->uevent_event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen sd_event_source_unref(manager->inotify_event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_unref(manager->udev);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen sd_event_unref(manager->event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager_workers_free(manager);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen event_queue_cleanup(manager, EVENT_UNDEF);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_monitor_unref(manager->monitor);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_ctrl_unref(manager->ctrl);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_ctrl_connection_unref(manager->ctrl_conn_blocking);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_list_cleanup(&manager->properties);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_rules_unref(manager->rules);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen safe_close(manager->fd_inotify);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen safe_close_pair(manager->worker_watch);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen free(manager);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen}

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom GundersenDEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersenstatic int worker_send_message(int fd) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen struct worker_message message = {};

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return loop_write(fd, &message, sizeof(message), false);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen}

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersenstatic void worker_spawn(Manager *manager, struct event *event) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen struct udev *udev = event->udev;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_udev_monitor_unref_ struct udev_monitor *worker_monitor = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen pid_t pid;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen int r = 0;

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen /* listen for new events */

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen worker_monitor = udev_monitor_new_from_netlink(udev, NULL);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (worker_monitor == NULL)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen return;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen /* allow the main daemon netlink address to send devices to the worker */

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen udev_monitor_allow_unicast_sender(worker_monitor, manager->monitor);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = udev_monitor_enable_receiving(worker_monitor);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (r < 0)

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen log_error_errno(r, "worker: could not enable receiving of device: %m");

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen pid = fork();

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen switch (pid) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen case 0: {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen struct udev_device *dev = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_netlink_unref_ sd_netlink *rtnl = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen int fd_monitor;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen _cleanup_close_ int fd_signal = -1, fd_ep = -1;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen struct epoll_event ep_signal = { .events = EPOLLIN };

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen struct epoll_event ep_monitor = { .events = EPOLLIN };

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen sigset_t mask;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen /* take initial device from queue */

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen dev = event->dev;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen event->dev = NULL;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen unsetenv("NOTIFY_SOCKET");

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager_workers_free(manager);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen event_queue_cleanup(manager, EVENT_UNDEF);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->monitor = udev_monitor_unref(manager->monitor);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->ctrl_conn_blocking = udev_ctrl_connection_unref(manager->ctrl_conn_blocking);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->ctrl = udev_ctrl_unref(manager->ctrl);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->ctrl_conn_blocking = udev_ctrl_connection_unref(manager->ctrl_conn_blocking);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->worker_watch[READ_END] = safe_close(manager->worker_watch[READ_END]);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->ctrl_event = sd_event_source_unref(manager->ctrl_event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->uevent_event = sd_event_source_unref(manager->uevent_event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->inotify_event = sd_event_source_unref(manager->inotify_event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen manager->event = sd_event_unref(manager->event);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen sigfillset(&mask);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (fd_signal < 0) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = log_error_errno(errno, "error creating signalfd %m");

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen goto out;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen }

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen ep_signal.data.fd = fd_signal;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen fd_monitor = udev_monitor_get_fd(worker_monitor);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen ep_monitor.data.fd = fd_monitor;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen fd_ep = epoll_create1(EPOLL_CLOEXEC);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (fd_ep < 0) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = log_error_errno(errno, "error creating epoll fd: %m");

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen goto out;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen }

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_signal, &ep_signal) < 0 ||

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_monitor, &ep_monitor) < 0) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = log_error_errno(errno, "fail to add fds to epoll: %m");

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen goto out;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen }

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen /* request TERM signal if parent exits */

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen prctl(PR_SET_PDEATHSIG, SIGTERM);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

d6bd972d061af306ede2affd2c9340a1660f7996Tom Gundersen /* reset OOM score, we only protect the main daemon */

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen write_string_file("/proc/self/oom_score_adj", "0", 0);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen

d6bd972d061af306ede2affd2c9340a1660f7996Tom Gundersen for (;;) {

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen struct udev_event *udev_event;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen int fd_lock = -1;

d6bd972d061af306ede2affd2c9340a1660f7996Tom Gundersen

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen assert(dev);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen log_debug("seq %llu running", udev_device_get_seqnum(dev));

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen udev_event = udev_event_new(dev);

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen if (udev_event == NULL) {

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen r = -ENOMEM;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen goto out;

969b009d9416806911b9b52e7e7bc619c0c1a931Tom Gundersen }

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen if (arg_exec_delay > 0)

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen udev_event->exec_delay = arg_exec_delay;

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

1231c4d238844e77018caf5b5852f01d96373c47Tom Gundersen /*

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen if (!streq_ptr(udev_device_get_action(dev), "remove") &&

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen streq_ptr("block", udev_device_get_subsystem(dev)) &&

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen !startswith(udev_device_get_sysname(dev), "dm-") &&

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen !startswith(udev_device_get_sysname(dev), "md")) {

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen struct udev_device *d = dev;

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams if (streq_ptr("partition", udev_device_get_devtype(d)))

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen d = udev_device_get_parent(d);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen if (d) {

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen fd_lock = open(udev_device_get_devnode(d), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen if (fd_lock >= 0 && flock(fd_lock, LOCK_SH|LOCK_NB) < 0) {

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen log_debug_errno(errno, "Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d));

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen fd_lock = safe_close(fd_lock);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen goto skip;

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen }

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen }

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen }

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen /* needed for renaming netifs */

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen udev_event->rtnl = rtnl;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen /* apply rules, create node, symlinks */

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen udev_event_execute_rules(udev_event,

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen arg_event_timeout_usec, arg_event_timeout_warn_usec,

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen &manager->properties,

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen manager->rules);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen udev_event_execute_run(udev_event,

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen arg_event_timeout_usec, arg_event_timeout_warn_usec);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen if (udev_event->rtnl)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen /* in case rtnl was initialized */

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen rtnl = sd_netlink_ref(udev_event->rtnl);

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen /* apply/restore inotify watch */

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen if (udev_event->inotify_watch) {

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen udev_watch_begin(udev, dev);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen udev_device_update_db(dev);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen }

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen safe_close(fd_lock);

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen /* send processed event back to libudev listeners */

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen udev_monitor_send_device(worker_monitor, NULL, dev);

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersenskip:

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen log_debug("seq %llu processed", udev_device_get_seqnum(dev));

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen /* send udevd the result of the event execution */

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen r = worker_send_message(manager->worker_watch[WRITE_END]);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen if (r < 0)

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen log_error_errno(r, "failed to send result of seq %llu to main daemon: %m",

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen udev_device_get_seqnum(dev));

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen udev_device_unref(dev);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen dev = NULL;

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen udev_event_unref(udev_event);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen /* wait for more device messages from main udevd, or term signal */

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen while (dev == NULL) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct epoll_event ev[4];

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen int fdcount;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen int i;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (fdcount < 0) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (errno == EINTR)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen continue;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen r = log_error_errno(errno, "failed to poll: %m");

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen goto out;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen for (i = 0; i < fdcount; i++) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (ev[i].data.fd == fd_monitor && ev[i].events & EPOLLIN) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen dev = udev_monitor_receive_device(worker_monitor);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen break;

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen } else if (ev[i].data.fd == fd_signal && ev[i].events & EPOLLIN) {

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen struct signalfd_siginfo fdsi;

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen ssize_t size;

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen size = read(fd_signal, &fdsi, sizeof(struct signalfd_siginfo));

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen if (size != sizeof(struct signalfd_siginfo))

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen continue;

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen switch (fdsi.ssi_signo) {

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen case SIGTERM:

59b8f6b628145586e87b8a4f6e29c755ad7d61edTom Gundersen goto out;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poetteringout:

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering udev_device_unref(dev);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering manager_free(manager);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering log_close();

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering _exit(r < 0 ? EXIT_FAILURE : EXIT_SUCCESS);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering case -1:

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering event->state = EVENT_QUEUED;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering log_error_errno(errno, "fork of child failed: %m");

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering break;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering default:

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering {

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering struct worker *worker;

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering r = worker_new(&worker, manager, worker_monitor, pid);

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering if (r < 0)

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering return;

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering worker_attach_event(worker, event);

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering log_debug("seq %llu forked new worker ["PID_FMT"]", udev_device_get_seqnum(event->dev), pid);

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering break;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen}

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersenstatic void event_run(Manager *manager, struct event *event) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct worker *worker;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen Iterator i;

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen assert(manager);

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen assert(event);

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen HASHMAP_FOREACH(worker, manager->workers, i) {

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen ssize_t count;

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen if (worker->state != WORKER_IDLE)

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen continue;

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen count = udev_monitor_send_device(manager->monitor, worker->monitor, event->dev);

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen if (count < 0) {

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen log_error_errno(errno, "worker ["PID_FMT"] did not accept message %zi (%m), kill it",

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen worker->pid, count);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen kill(worker->pid, SIGKILL);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen worker->state = WORKER_KILLED;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen continue;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen }

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen worker_attach_event(worker, event);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen return;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen }

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (hashmap_size(manager->workers) >= arg_children_max) {

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (arg_children_max > 1)

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen log_debug("maximum number (%i) of children reached", hashmap_size(manager->workers));

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen return;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen }

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams

76253e73f9c9c24fec755e485516f3b55d0707b4Dan Williams /* start new worker and pass initial device */

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen worker_spawn(manager, event);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen}

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersenstatic int event_queue_insert(Manager *manager, struct udev_device *dev) {

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen struct event *event;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen int r;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen assert(manager);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen assert(dev);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen /* only one process can add events to the queue */

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (manager->pid == 0)

c15fb62a731f1a457af94e60ac6a4d23f219a8f6Thomas Hindoe Paaboel Andersen manager->pid = getpid();

c15fb62a731f1a457af94e60ac6a4d23f219a8f6Thomas Hindoe Paaboel Andersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen assert(manager->pid == getpid());

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen event = new0(struct event, 1);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (!event)

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering return -ENOMEM;

89ca10c6a61309d84d54c5dc5a295387ce39e610Lennart Poettering

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen event->udev = udev_device_get_udev(dev);

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen event->manager = manager;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen event->dev = dev;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen event->dev_kernel = udev_device_shallow_clone(dev);

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen udev_device_copy_properties(event->dev_kernel, dev);

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen event->seqnum = udev_device_get_seqnum(dev);

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen event->devpath = udev_device_get_devpath(dev);

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen event->devpath_len = strlen(event->devpath);

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen event->devpath_old = udev_device_get_devpath_old(dev);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen event->devnum = udev_device_get_devnum(dev);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen event->is_block = streq("block", udev_device_get_subsystem(dev));

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen event->ifindex = udev_device_get_ifindex(dev);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen log_debug("seq %llu queued, '%s' '%s'", udev_device_get_seqnum(dev),

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen udev_device_get_action(dev), udev_device_get_subsystem(dev));

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen event->state = EVENT_QUEUED;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen if (udev_list_node_is_empty(&manager->events)) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen r = touch("/run/udev/queue");

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen if (r < 0)

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen log_warning_errno(r, "could not touch /run/udev/queue: %m");

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen }

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen udev_list_node_append(&event->node, &manager->events);

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen return 0;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen}

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersenstatic void manager_kill_workers(Manager *manager) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen struct worker *worker;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen Iterator i;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen assert(manager);

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen HASHMAP_FOREACH(worker, manager->workers, i) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen if (worker->state == WORKER_KILLED)

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen continue;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen worker->state = WORKER_KILLED;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen kill(worker->pid, SIGTERM);

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen }

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen}

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersenstatic bool is_devpath_busy(Manager *manager, struct event *event) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen struct udev_list_node *loop;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen size_t common;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* check if queue contains events we depend on */

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen udev_list_node_foreach(loop, &manager->events) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen struct event *loop_event = node_to_event(loop);

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* we already found a later event, earlier can not block us, no need to check again */

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen if (loop_event->seqnum < event->delaying_seqnum)

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering continue;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* event we checked earlier still exists, no need to check again */

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen if (loop_event->seqnum == event->delaying_seqnum)

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen return true;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

e2acdb6b0f68d9b4152708a9f21bf9e11f8b9e7eTorstein Husebø /* found ourself, no later event can block us */

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen if (loop_event->seqnum >= event->seqnum)

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen break;

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* check major/minor */

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering if (major(event->devnum) != 0 && event->devnum == loop_event->devnum && event->is_block == loop_event->is_block)

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen return true;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* check network device ifindex */

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering if (event->ifindex != 0 && event->ifindex == loop_event->ifindex)

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering return true;

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* check our old name */

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen if (event->devpath_old != NULL && streq(loop_event->devpath, event->devpath_old)) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen event->delaying_seqnum = loop_event->seqnum;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen return true;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen }

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* compare devpath */

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering common = MIN(loop_event->devpath_len, event->devpath_len);

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering /* one devpath is contained in the other? */

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering if (memcmp(loop_event->devpath, event->devpath, common) != 0)

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering continue;

c7d9ffe6d629cb5b34dd749e4a88b190b11a0f48Tom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* identical device event found */

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen if (loop_event->devpath_len == event->devpath_len) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* devices names might have changed/swapped in the meantime */

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (major(event->devnum) != 0 && (event->devnum != loop_event->devnum || event->is_block != loop_event->is_block))

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen continue;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (event->ifindex != 0 && event->ifindex != loop_event->ifindex)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen continue;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen event->delaying_seqnum = loop_event->seqnum;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return true;

99634696183dfabae20104e58157c69029a11594Tom Gundersen }

99634696183dfabae20104e58157c69029a11594Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen /* parent device event found */

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (event->devpath[common] == '/') {

99634696183dfabae20104e58157c69029a11594Tom Gundersen event->delaying_seqnum = loop_event->seqnum;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen return true;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen }

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen /* child device event found */

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen if (loop_event->devpath[common] == '/') {

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen event->delaying_seqnum = loop_event->seqnum;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen return true;

f693e9b38f13575b988335e3324a50dcc8772d48Tom Gundersen }

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen /* no matching device */

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen continue;

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen }

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen return false;

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen}

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen

be077570f779664ed87b50f60608df9fbe258821Tom Gundersenstatic int on_exit_timeout(sd_event_source *s, uint64_t usec, void *userdata) {

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen Manager *manager = userdata;

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen assert(manager);

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen log_error_errno(ETIMEDOUT, "giving up waiting for workers to finish");

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

f693e9b38f13575b988335e3324a50dcc8772d48Tom Gundersen sd_event_exit(manager->event, -ETIMEDOUT);

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen return 1;

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen}

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersenstatic void manager_exit(Manager *manager) {

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen uint64_t usec;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen int r;

816e2e7af96886e4a43194042ef61ba9fec2c77dTom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen assert(manager);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen manager->exit = true;

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering sd_notify(false,

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering "STOPPING=1\n"

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen "STATUS=Starting shutdown...");

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen /* close sources of new events and discard buffered events */

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen manager->ctrl_event = sd_event_source_unref(manager->ctrl_event);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen manager->ctrl = udev_ctrl_unref(manager->ctrl);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen manager->inotify_event = sd_event_source_unref(manager->inotify_event);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen manager->fd_inotify = safe_close(manager->fd_inotify);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen manager->uevent_event = sd_event_source_unref(manager->uevent_event);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen manager->monitor = udev_monitor_unref(manager->monitor);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen /* discard queued events and kill workers */

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen event_queue_cleanup(manager, EVENT_QUEUED);

b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen manager_kill_workers(manager);

0cb3c286883b694fc52a18a3b559ff98931641f3Tom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen assert_se(sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec) >= 0);

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen r = sd_event_add_time(manager->event, NULL, clock_boottime_or_monotonic(),

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen usec + 30 * USEC_PER_SEC, USEC_PER_SEC, on_exit_timeout, manager);

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen if (r < 0)

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen return;

0cb3c286883b694fc52a18a3b559ff98931641f3Tom Gundersen}

b826ab586c9e0a9c0d438a75c28cf3a8ab485929Tom Gundersen

0cb3c286883b694fc52a18a3b559ff98931641f3Tom Gundersenstatic void manager_reload(Manager *manager) {

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen assert(manager);

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen sd_notify(false,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen "RELOADING=1\n"

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen "STATUS=Flushing configuration...");

83cedf7ae28925e37931e7e92d22be9c936a1defTom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen manager_kill_workers(manager);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen manager->rules = udev_rules_unref(manager->rules);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen udev_builtin_exit(manager->udev);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen sd_notify(false,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen "READY=1\n"

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen "STATUS=Processing...");

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen}

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersenstatic void event_queue_start(Manager *manager) {

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen struct udev_list_node *loop;

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen usec_t usec;

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen assert(manager);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen if (udev_list_node_is_empty(&manager->events) ||

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen manager->exit || manager->stop_exec_queue)

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen return;

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen assert_se(sd_event_now(manager->event, clock_boottime_or_monotonic(), &usec) >= 0);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen /* check for changed config, every 3 seconds at most */

5b34277c2015e32e51d10cfa076df2c7106b4537Tom Gundersen if (manager->last_usec == 0 ||

f693e9b38f13575b988335e3324a50dcc8772d48Tom Gundersen (usec - manager->last_usec) > 3 * USEC_PER_SEC) {

5b34277c2015e32e51d10cfa076df2c7106b4537Tom Gundersen if (udev_rules_check_timestamp(manager->rules) ||

5b34277c2015e32e51d10cfa076df2c7106b4537Tom Gundersen udev_builtin_validate(manager->udev))

5b34277c2015e32e51d10cfa076df2c7106b4537Tom Gundersen manager_reload(manager);

5b34277c2015e32e51d10cfa076df2c7106b4537Tom Gundersen

5b34277c2015e32e51d10cfa076df2c7106b4537Tom Gundersen manager->last_usec = usec;

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen udev_builtin_init(manager->udev);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (!manager->rules) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen manager->rules = udev_rules_new(manager->udev, arg_resolve_names);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (!manager->rules)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen return;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen udev_list_node_foreach(loop, &manager->events) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct event *event = node_to_event(loop);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (event->state != EVENT_QUEUED)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen continue;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen /* do not start event if parent or child event is still running */

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (is_devpath_busy(manager, event))

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen continue;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen event_run(manager, event);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen}

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersenstatic void event_queue_cleanup(Manager *manager, enum event_state match_type) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct udev_list_node *loop, *tmp;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen udev_list_node_foreach_safe(loop, tmp, &manager->events) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct event *event = node_to_event(loop);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (match_type != EVENT_UNDEF && match_type != event->state)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen continue;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen event_free(event);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen}

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersenstatic int on_worker(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen Manager *manager = userdata;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen assert(manager);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen for (;;) {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct worker_message msg;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct iovec iovec = {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen .iov_base = &msg,

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen .iov_len = sizeof(msg),

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen };

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen union {

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen struct cmsghdr cmsghdr;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen } control = {};

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct msghdr msghdr = {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen .msg_iov = &iovec,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen .msg_iovlen = 1,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen .msg_control = &control,

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen .msg_controllen = sizeof(control),

a7f7d1bde43fc825c49afea3f946f5b4b3d563e0Harald Hoyer };

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct cmsghdr *cmsg;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen ssize_t size;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct ucred *ucred = NULL;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen struct worker *worker;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen size = recvmsg(fd, &msghdr, MSG_DONTWAIT);

02557f973aed0fed7154fefe53d67e2935f918dcThomas Hindoe Paaboel Andersen if (size < 0) {

02557f973aed0fed7154fefe53d67e2935f918dcThomas Hindoe Paaboel Andersen if (errno == EINTR)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen continue;

02557f973aed0fed7154fefe53d67e2935f918dcThomas Hindoe Paaboel Andersen else if (errno == EAGAIN)

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen /* nothing more to read */

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen break;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen return log_error_errno(errno, "failed to receive message: %m");

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen } else if (size != sizeof(struct worker_message)) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen log_warning_errno(EIO, "ignoring worker message with invalid size %zi bytes", size);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen continue;

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen }

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen CMSG_FOREACH(cmsg, &msghdr) {

bff92d2c2f913c368d80066ee89855665818edc8Susant Sahani if (cmsg->cmsg_level == SOL_SOCKET &&

bff92d2c2f913c368d80066ee89855665818edc8Susant Sahani cmsg->cmsg_type == SCM_CREDENTIALS &&

bff92d2c2f913c368d80066ee89855665818edc8Susant Sahani cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))

38a03f06a7393d2721c23f23f0589d2f6d0904afLennart Poettering ucred = (struct ucred*) CMSG_DATA(cmsg);

bff92d2c2f913c368d80066ee89855665818edc8Susant Sahani }

bff92d2c2f913c368d80066ee89855665818edc8Susant Sahani

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (!ucred || ucred->pid <= 0) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen log_warning_errno(EIO, "ignoring worker message without valid PID");

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen continue;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen /* lookup worker who sent the signal */

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen worker = hashmap_get(manager->workers, UINT_TO_PTR(ucred->pid));

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen if (!worker) {

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen log_debug("worker ["PID_FMT"] returned, but is no longer tracked", ucred->pid);

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen continue;

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen }

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (worker->state != WORKER_KILLED)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen worker->state = WORKER_IDLE;

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen /* worker returned */

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen event_free(worker->event);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen }

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen

87322b3aee0dc649ff1ae7a403dcc9d7305baba2Tom Gundersen /* we have free workers, try to schedule events */

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen event_queue_start(manager);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen return 1;

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen}

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersenstatic int on_uevent(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen Manager *manager = userdata;

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen struct udev_device *dev;

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen int r;

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen assert(manager);

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen dev = udev_monitor_receive_device(manager->monitor);

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen if (dev) {

bd57b45029ff25067704c9538e79f31e71c10045Tom Gundersen udev_device_ensure_usec_initialized(dev, NULL);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen r = event_queue_insert(manager, dev);

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen if (r < 0)

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen udev_device_unref(dev);

9a0f246fcdb1238e6b3397169a10095f4df89210Lennart Poettering else

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen /* we have fresh events, try to schedule them */

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen event_queue_start(manager);

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen }

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen return 1;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen}

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersenstatic int on_ctrl_msg(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen Manager *manager = userdata;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen _cleanup_udev_ctrl_connection_unref_ struct udev_ctrl_connection *ctrl_conn = NULL;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen _cleanup_udev_ctrl_msg_unref_ struct udev_ctrl_msg *ctrl_msg = NULL;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen const char *str;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen int i;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen assert(manager);

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen ctrl_conn = udev_ctrl_get_connection(manager->ctrl);

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen if (!ctrl_conn)

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen return 1;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen ctrl_msg = udev_ctrl_receive_msg(ctrl_conn);

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen if (!ctrl_msg)

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen return 1;

500792d8180c9a11d65f107cdc79dea21b2964c4Tom Gundersen

2dead8129f7b6fe644e17e1dc1739bebacfe1364Tom Gundersen i = udev_ctrl_get_set_log_level(ctrl_msg);

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen if (i >= 0) {

4dc355680460fdc8e0d590d8572dff1b6a257d88Tom Gundersen log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i);

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen log_set_max_level(i);

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen manager_kill_workers(manager);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen log_debug("udevd message (STOP_EXEC_QUEUE) received");

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen manager->stop_exec_queue = true;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (udev_ctrl_get_start_exec_queue(ctrl_msg) > 0) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen log_debug("udevd message (START_EXEC_QUEUE) received");

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen manager->stop_exec_queue = false;

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen event_queue_start(manager);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen

966d74c043098e12d4d5b101aa7650244c14b815Lennart Poettering if (udev_ctrl_get_reload(ctrl_msg) > 0) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen log_debug("udevd message (RELOAD) received");

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen manager_reload(manager);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

966d74c043098e12d4d5b101aa7650244c14b815Lennart Poettering

966d74c043098e12d4d5b101aa7650244c14b815Lennart Poettering str = udev_ctrl_get_set_env(ctrl_msg);

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen if (str != NULL) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen _cleanup_free_ char *key = NULL;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen key = strdup(str);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (key) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen char *val;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen val = strchr(key, '=');

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (val != NULL) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen val[0] = '\0';

a38d99451f2bf8026ec51aee91662292e823c6a8Lennart Poettering val = &val[1];

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen if (val[0] == '\0') {

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen log_debug("udevd message (ENV) received, unset '%s'", key);

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen udev_list_entry_add(&manager->properties, key, NULL);

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen } else {

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen log_debug("udevd message (ENV) received, set '%s=%s'", key, val);

0d43d2fcb7ac5264c739dc2f67f93ed0985a418aTom Gundersen udev_list_entry_add(&manager->properties, key, val);

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen } else

2a1288ff89322a2f49c79f6d1832c8164c14a05cLennart Poettering log_error("wrong key format '%s'", key);

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen }

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen manager_kill_workers(manager);

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen }

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen i = udev_ctrl_get_set_children_max(ctrl_msg);

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen if (i >= 0) {

a6f1e036de8f212f33ead7f5387c297afd8be26eTom Gundersen log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i", i);

b3ec603ce8053ba3f95da1d36f15ea762c83d1e1Lennart Poettering arg_children_max = i;

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen }

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen if (udev_ctrl_get_ping(ctrl_msg) > 0)

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen log_debug("udevd message (SYNC) received");

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen

3a864fe4a894745ac61f1ecabd7cadf04139a284Tom Gundersen if (udev_ctrl_get_exit(ctrl_msg) > 0) {

be077570f779664ed87b50f60608df9fbe258821Tom Gundersen log_debug("udevd message (EXIT) received");

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen manager_exit(manager);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen /* keep reference to block the client until we exit

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen manager->ctrl_conn_blocking = udev_ctrl_connection_ref(ctrl_conn);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen return 1;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen}

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersenstatic int synthesize_change(struct udev_device *dev) {

20af7091de0cdf92bf299addfc3f96c3ef805bd8Tom Gundersen char filename[UTIL_PATH_SIZE];

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen int r;

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen if (streq_ptr("block", udev_device_get_subsystem(dev)) &&

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen streq_ptr("disk", udev_device_get_devtype(dev)) &&

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen !startswith(udev_device_get_sysname(dev), "dm-")) {

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen bool part_table_read = false;

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen bool has_partitions = false;

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen int fd;

8de4a226c71ef43e652274b33b5d19211a44ac7bTom Gundersen struct udev *udev = udev_device_get_udev(dev);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen struct udev_list_entry *item;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen /*

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen fd = open(udev_device_get_devnode(dev), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (fd >= 0) {

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen r = flock(fd, LOCK_EX|LOCK_NB);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (r >= 0)

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen r = ioctl(fd, BLKRRPART, 0);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen close(fd);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (r >= 0)

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen part_table_read = true;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen }

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen /* search for partitions */

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen e = udev_enumerate_new(udev);

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen if (!e)

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen return -ENOMEM;

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen

ff734080aa02cd70b13bc0fdeec4a5886166163aTom Gundersen r = udev_enumerate_add_match_parent(e, dev);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (r < 0)

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen return r;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

621ac3d2cc8f37169166df9c7f379b0cb6b17e36Thomas Hindoe Paaboel Andersen r = udev_enumerate_add_match_subsystem(e, "block");

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (r < 0)

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen return r;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen r = udev_enumerate_scan_devices(e);

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (r < 0)

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen return r;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

99634696183dfabae20104e58157c69029a11594Tom Gundersen udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen _cleanup_udev_device_unref_ struct udev_device *d = NULL;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (!d)

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen continue;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen if (!streq_ptr("partition", udev_device_get_devtype(d)))

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen continue;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen has_partitions = true;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen break;

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen }

527503444ef24ae03c73cf85128c7acbb1146f3cTom Gundersen

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering /*

64d6c22905e94b02e760747c6c143dc9893083d9Thomas Hindoe Paaboel Andersen if (part_table_read && has_partitions)

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering return 0;

64d6c22905e94b02e760747c6c143dc9893083d9Thomas Hindoe Paaboel Andersen

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering /*

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);

8eb9058dc1f99a5eb9b8726a978fcc0720837a10Lennart Poettering

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering _cleanup_udev_device_unref_ struct udev_device *d = NULL;

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering if (!d)

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering continue;

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering if (!streq_ptr("partition", udev_device_get_devtype(d)))

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering continue;

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering log_debug("device %s closed, synthesising partition '%s' 'change'",

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering udev_device_get_devnode(dev), udev_device_get_devnode(d));

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering strscpyl(filename, sizeof(filename), udev_device_get_syspath(d), "/uevent", NULL);

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering }

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering return 0;

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering }

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering

586ac6f711e2eccceb12421df22fca4f117226c4Lennart Poettering log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev));

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering write_string_file(filename, "change", WRITE_STRING_FILE_CREATE);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering return 0;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering}

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poetteringstatic int on_inotify(sd_event_source *s, int fd, uint32_t revents, void *userdata) {

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering Manager *manager = userdata;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering union inotify_event_buffer buffer;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering struct inotify_event *e;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering ssize_t l;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering assert(manager);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering l = read(fd, &buffer, sizeof(buffer));

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering if (l < 0) {

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering if (errno == EAGAIN || errno == EINTR)

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering return 1;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering return log_error_errno(errno, "Failed to read inotify fd: %m");

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering FOREACH_INOTIFY_EVENT(e, buffer, l) {

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering _cleanup_udev_device_unref_ struct udev_device *dev = NULL;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering dev = udev_watch_lookup(manager->udev, e->wd);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering if (!dev)

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering continue;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering log_debug("inotify event: %x for %s", e->mask, udev_device_get_devnode(dev));

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering if (e->mask & IN_CLOSE_WRITE) {

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering synthesize_change(dev);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering /* settle might be waiting on us to determine the queue

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering on_uevent(NULL, -1, 0, manager);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering } else if (e->mask & IN_IGNORED)

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering udev_watch_end(manager->udev, dev);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering }

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering return 1;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering}

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poetteringstatic int on_sigterm(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering Manager *manager = userdata;

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering assert(manager);

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering

1a04db0fc9d08fffe80d6d7b5b60459295922b11Lennart Poettering manager_exit(manager);

return 1;

}

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

Manager *manager = userdata;

assert(manager);

manager_reload(manager);

return 1;

}

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

Manager *manager = userdata;

assert(manager);

for (;;) {

pid_t pid;

int status;

struct worker *worker;

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

if (pid <= 0)

break;

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

if (!worker) {

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

continue;

}

if (WIFEXITED(status)) {

if (WEXITSTATUS(status) == 0)

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

else

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

} else if (WIFSIGNALED(status)) {

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

} else if (WIFSTOPPED(status)) {

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

continue;

} else if (WIFCONTINUED(status)) {

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

continue;

} else

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

if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {

if (worker->event) {

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

/* delete state from disk */

udev_device_delete_db(worker->event->dev);

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

/* forward kernel event without amending it */

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

}

}

worker_free(worker);

}

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

event_queue_start(manager);

return 1;

}

static int on_post(sd_event_source *s, void *userdata) {

Manager *manager = userdata;

int r;

assert(manager);

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

/* no pending events */

if (!hashmap_isempty(manager->workers)) {

/* there are idle workers */

log_debug("cleanup idle workers");

manager_kill_workers(manager);

} else {

/* we are idle */

if (manager->exit) {

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

if (r < 0)

return r;

} else if (manager->cgroup)

/* cleanup possible left-over processes in our cgroup */

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

}

}

return 1;

}

static int listen_fds(int *rctrl, int *rnetlink) {

_cleanup_udev_unref_ struct udev *udev = NULL;

int ctrl_fd = -1, netlink_fd = -1;

int fd, n, r;

assert(rctrl);

assert(rnetlink);

n = sd_listen_fds(true);

if (n < 0)

return n;

for (fd = SD_LISTEN_FDS_START; fd < n + SD_LISTEN_FDS_START; fd++) {

if (sd_is_socket(fd, AF_LOCAL, SOCK_SEQPACKET, -1)) {

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)

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

fd = udev_ctrl_get_fd(ctrl);

if (fd < 0)

return log_error_errno(EIO, "could not get ctrl fd");