diff options
Diffstat (limited to 'src/udev/udevd.c')
| -rw-r--r-- | src/udev/udevd.c | 1372 |
1 files changed, 736 insertions, 636 deletions
diff --git a/src/udev/udevd.c b/src/udev/udevd.c index 34f6a95503..fb8724ea87 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -3,7 +3,6 @@ * Copyright © 2004 Chris Friesen <chris_friesen@sympatico.ca> * Copyright © 2009 Canonical Ltd. * Copyright © 2009 Scott James Remnant <scott@netsplit.com> - * */ #include <errno.h> @@ -35,46 +34,59 @@ #include "cgroup-util.h" #include "cpu-set-util.h" #include "dev-setup.h" +#include "device-monitor-private.h" +#include "device-private.h" +#include "device-util.h" +#include "event-util.h" #include "fd-util.h" #include "fileio.h" #include "format-util.h" #include "fs-util.h" #include "hashmap.h" #include "io-util.h" +#include "libudev-device-internal.h" #include "list.h" +#include "main-func.h" +#include "mkdir.h" #include "netlink-util.h" #include "parse-util.h" +#include "pretty-print.h" #include "proc-cmdline.h" #include "process-util.h" #include "selinux-util.h" #include "signal-util.h" #include "socket-util.h" #include "string-util.h" -#include "terminal-util.h" +#include "strv.h" +#include "strxcpyx.h" +#include "syslog-util.h" +#include "udev-builtin.h" +#include "udev-ctrl.h" #include "udev-util.h" +#include "udev-watch.h" #include "udev.h" #include "user-util.h" static bool arg_debug = false; static int arg_daemonize = false; -static int arg_resolve_names = 1; -static unsigned arg_children_max; -static int arg_exec_delay; +static ResolveNameTiming arg_resolve_name_timing = RESOLVE_NAME_EARLY; +static unsigned arg_children_max = 0; +static usec_t arg_exec_delay_usec = 0; static usec_t arg_event_timeout_usec = 180 * USEC_PER_SEC; -static usec_t arg_event_timeout_warn_usec = 180 * USEC_PER_SEC / 3; typedef struct Manager { - struct udev *udev; sd_event *event; Hashmap *workers; LIST_HEAD(struct event, events); const char *cgroup; pid_t pid; /* the process that originally allocated the manager object */ - struct udev_rules *rules; - struct udev_list properties; + UdevRules *rules; + Hashmap *properties; - struct udev_monitor *monitor; + sd_netlink *rtnl; + + sd_device_monitor *monitor; struct udev_ctrl *ctrl; struct udev_ctrl_connection *ctrl_conn_blocking; int fd_inotify; @@ -83,6 +95,7 @@ typedef struct Manager { sd_event_source *ctrl_event; sd_event_source *uevent_event; sd_event_source *inotify_event; + sd_event_source *kill_workers_event; usec_t last_usec; @@ -97,23 +110,20 @@ enum event_state { }; struct event { - LIST_FIELDS(struct event, event); Manager *manager; - struct udev *udev; - struct udev_device *dev; - struct udev_device *dev_kernel; struct worker *worker; enum event_state state; - unsigned long long int delaying_seqnum; - unsigned long long int seqnum; - const char *devpath; - size_t devpath_len; - const char *devpath_old; - dev_t devnum; - int ifindex; - bool is_block; - sd_event_source *timeout_warning; - sd_event_source *timeout; + + sd_device *dev; + sd_device *dev_kernel; /* clone of originally received device */ + + uint64_t seqnum; + uint64_t delaying_seqnum; + + sd_event_source *timeout_warning_event; + sd_event_source *timeout_event; + + LIST_FIELDS(struct event, event); }; static void event_queue_cleanup(Manager *manager, enum event_state type); @@ -127,9 +137,8 @@ enum worker_state { struct worker { Manager *manager; - int refcount; pid_t pid; - struct udev_monitor *monitor; + sd_device_monitor *monitor; enum worker_state state; struct event *event; }; @@ -139,30 +148,26 @@ struct worker_message { }; static void event_free(struct event *event) { - int r; - if (!event) return; + assert(event->manager); LIST_REMOVE(event, event->manager->events, event); - udev_device_unref(event->dev); - udev_device_unref(event->dev_kernel); + sd_device_unref(event->dev); + sd_device_unref(event->dev_kernel); - sd_event_source_unref(event->timeout_warning); - sd_event_source_unref(event->timeout); + sd_event_source_unref(event->timeout_warning_event); + sd_event_source_unref(event->timeout_event); if (event->worker) event->worker->event = NULL; - if (LIST_IS_EMPTY(event->manager->events)) { - /* only clean up the queue from the process that created it */ - if (event->manager->pid == getpid_cached()) { - r = unlink("/run/udev/queue"); - if (r < 0) - log_warning_errno(errno, "could not unlink /run/udev/queue: %m"); - } - } + /* only clean up the queue from the process that created it */ + if (LIST_IS_EMPTY(event->manager->events) && + event->manager->pid == getpid_cached()) + if (unlink("/run/udev/queue") < 0) + log_warning_errno(errno, "Failed to unlink /run/udev/queue: %m"); free(event); } @@ -174,7 +179,7 @@ static void worker_free(struct worker *worker) { assert(worker->manager); hashmap_remove(worker->manager->workers, PID_TO_PTR(worker->pid)); - udev_monitor_unref(worker->monitor); + sd_device_monitor_unref(worker->monitor); event_free(worker->event); free(worker); @@ -192,7 +197,7 @@ static void manager_workers_free(Manager *manager) { manager->workers = hashmap_free(manager->workers); } -static int worker_new(struct worker **ret, Manager *manager, struct udev_monitor *worker_monitor, pid_t pid) { +static int worker_new(struct worker **ret, Manager *manager, sd_device_monitor *worker_monitor, pid_t pid) { _cleanup_free_ struct worker *worker = NULL; int r; @@ -205,11 +210,10 @@ static int worker_new(struct worker **ret, Manager *manager, struct udev_monitor if (!worker) return -ENOMEM; - worker->refcount = 1; worker->manager = manager; /* close monitor, but keep address around */ - udev_monitor_disconnect(worker_monitor); - worker->monitor = udev_monitor_ref(worker_monitor); + device_monitor_disconnect(worker_monitor); + worker->monitor = sd_device_monitor_ref(worker_monitor); worker->pid = pid; r = hashmap_ensure_allocated(&manager->workers, NULL); @@ -234,7 +238,7 @@ static int on_event_timeout(sd_event_source *s, uint64_t usec, void *userdata) { kill_and_sigcont(event->worker->pid, SIGKILL); event->worker->state = WORKER_KILLED; - log_error("seq %llu '%s' killed", udev_device_get_seqnum(event->dev), event->devpath); + log_device_error(event->dev, "Worker ["PID_FMT"] processing SEQNUM=%"PRIu64" killed", event->worker->pid, event->seqnum); return 1; } @@ -243,8 +247,9 @@ static int on_event_timeout_warning(sd_event_source *s, uint64_t usec, void *use struct event *event = userdata; assert(event); + assert(event->worker); - log_warning("seq %llu '%s' is taking a long time", udev_device_get_seqnum(event->dev), event->devpath); + log_device_warning(event->dev, "Worker ["PID_FMT"] processing SEQNUM=%"PRIu64" is taking a long time", event->worker->pid, event->seqnum); return 1; } @@ -268,34 +273,45 @@ static void worker_attach_event(struct worker *worker, struct event *event) { assert_se(sd_event_now(e, CLOCK_MONOTONIC, &usec) >= 0); - (void) sd_event_add_time(e, &event->timeout_warning, CLOCK_MONOTONIC, - usec + arg_event_timeout_warn_usec, USEC_PER_SEC, on_event_timeout_warning, event); + (void) sd_event_add_time(e, &event->timeout_warning_event, CLOCK_MONOTONIC, + usec + udev_warn_timeout(arg_event_timeout_usec), USEC_PER_SEC, on_event_timeout_warning, event); - (void) sd_event_add_time(e, &event->timeout, CLOCK_MONOTONIC, + (void) sd_event_add_time(e, &event->timeout_event, CLOCK_MONOTONIC, usec + arg_event_timeout_usec, USEC_PER_SEC, on_event_timeout, event); } -static void manager_free(Manager *manager) { - if (!manager) - return; +static void manager_clear_for_worker(Manager *manager) { + assert(manager); - udev_builtin_exit(manager->udev); + manager->ctrl_event = sd_event_source_unref(manager->ctrl_event); + manager->uevent_event = sd_event_source_unref(manager->uevent_event); + manager->inotify_event = sd_event_source_unref(manager->inotify_event); + manager->kill_workers_event = sd_event_source_unref(manager->kill_workers_event); - sd_event_source_unref(manager->ctrl_event); - sd_event_source_unref(manager->uevent_event); - sd_event_source_unref(manager->inotify_event); + manager->event = sd_event_unref(manager->event); - udev_unref(manager->udev); - sd_event_unref(manager->event); manager_workers_free(manager); event_queue_cleanup(manager, EVENT_UNDEF); - udev_monitor_unref(manager->monitor); - udev_ctrl_unref(manager->ctrl); - udev_ctrl_connection_unref(manager->ctrl_conn_blocking); + manager->monitor = sd_device_monitor_unref(manager->monitor); + manager->ctrl_conn_blocking = udev_ctrl_connection_unref(manager->ctrl_conn_blocking); + manager->ctrl = udev_ctrl_unref(manager->ctrl); + + manager->worker_watch[READ_END] = safe_close(manager->worker_watch[READ_END]); +} + +static void manager_free(Manager *manager) { + if (!manager) + return; + + udev_builtin_exit(); + + manager_clear_for_worker(manager); + + sd_netlink_unref(manager->rtnl); - udev_list_cleanup(&manager->properties); - udev_rules_unref(manager->rules); + hashmap_free_free_free(manager->properties); + udev_rules_free(manager->rules); safe_close(manager->fd_inotify); safe_close_pair(manager->worker_watch); @@ -311,253 +327,252 @@ static int worker_send_message(int fd) { return loop_write(fd, &message, sizeof(message), false); } -static bool shall_lock_device(struct udev_device *dev) { - const char *sysname; +static int worker_lock_block_device(sd_device *dev, int *ret_fd) { + _cleanup_close_ int fd = -1; + const char *val; + int r; + + assert(dev); + assert(ret_fd); + + /* + * Take a shared lock on the device node; this establishes + * a concept of device "ownership" to serialize device + * access. External processes holding an exclusive lock will + * cause udev to skip the event handling; in the case udev + * acquired the lock, the external process can block until + * udev has finished its event handling. + */ + + r = sd_device_get_property_value(dev, "ACTION", &val); + if (r < 0) + return log_device_debug_errno(dev, r, "Failed to get the value of property 'ACTION': %m"); + + if (streq(val, "remove")) + return 0; + + r = sd_device_get_subsystem(dev, &val); + if (r < 0) + return log_device_debug_errno(dev, r, "Failed to get subsystem: %m"); + + if (!streq(val, "block")) + return 0; + + r = sd_device_get_sysname(dev, &val); + if (r < 0) + return log_device_debug_errno(dev, r, "Failed to get sysname: %m"); + + if (STARTSWITH_SET(val, "dm-", "md", "drbd")) + return 0; + + r = sd_device_get_devtype(dev, &val); + if (r < 0 && r != -ENOENT) + return log_device_debug_errno(dev, r, "Failed to get devtype: %m"); + if (r >= 0 && streq(val, "partition")) { + r = sd_device_get_parent(dev, &dev); + if (r < 0) + return log_device_debug_errno(dev, r, "Failed to get parent device: %m"); + } + + r = sd_device_get_devname(dev, &val); + if (r == -ENOENT) + return 0; + if (r < 0) + return log_device_debug_errno(dev, r, "Failed to get devname: %m"); - if (!streq_ptr("block", udev_device_get_subsystem(dev))) - return false; + fd = open(val, O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK); + if (fd < 0) { + log_device_debug_errno(dev, errno, "Failed to open '%s', ignoring: %m", val); + return 0; + } + + if (flock(fd, LOCK_SH|LOCK_NB) < 0) + return log_device_debug_errno(dev, errno, "Failed to flock(%s): %m", val); - sysname = udev_device_get_sysname(dev); - return !startswith(sysname, "dm-") && - !startswith(sysname, "md") && - !startswith(sysname, "drbd"); + *ret_fd = TAKE_FD(fd); + return 1; } -static void worker_spawn(Manager *manager, struct event *event) { - struct udev *udev = event->udev; - _cleanup_(udev_monitor_unrefp) struct udev_monitor *worker_monitor = NULL; - pid_t pid; - int r = 0; +static int worker_process_device(Manager *manager, sd_device *dev) { + _cleanup_(udev_event_freep) UdevEvent *udev_event = NULL; + _cleanup_close_ int fd_lock = -1; + const char *seqnum; + int r; - /* listen for new events */ - worker_monitor = udev_monitor_new_from_netlink(udev, NULL); - if (worker_monitor == NULL) - return; - /* allow the main daemon netlink address to send devices to the worker */ - udev_monitor_allow_unicast_sender(worker_monitor, manager->monitor); - r = udev_monitor_enable_receiving(worker_monitor); + assert(manager); + assert(dev); + + r = sd_device_get_property_value(dev, "SEQNUM", &seqnum); if (r < 0) - log_error_errno(r, "worker: could not enable receiving of device: %m"); - - pid = fork(); - switch (pid) { - case 0: { - struct udev_device *dev = NULL; - _cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL; - int fd_monitor; - _cleanup_close_ int fd_signal = -1, fd_ep = -1; - struct epoll_event ep_signal = { .events = EPOLLIN }; - struct epoll_event ep_monitor = { .events = EPOLLIN }; - sigset_t mask; - - /* take initial device from queue */ - dev = TAKE_PTR(event->dev); - - unsetenv("NOTIFY_SOCKET"); - - manager_workers_free(manager); - event_queue_cleanup(manager, EVENT_UNDEF); - - manager->monitor = udev_monitor_unref(manager->monitor); - manager->ctrl_conn_blocking = udev_ctrl_connection_unref(manager->ctrl_conn_blocking); - manager->ctrl = udev_ctrl_unref(manager->ctrl); - manager->worker_watch[READ_END] = safe_close(manager->worker_watch[READ_END]); - - manager->ctrl_event = sd_event_source_unref(manager->ctrl_event); - manager->uevent_event = sd_event_source_unref(manager->uevent_event); - manager->inotify_event = sd_event_source_unref(manager->inotify_event); - - manager->event = sd_event_unref(manager->event); - - sigfillset(&mask); - fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); - if (fd_signal < 0) { - r = log_error_errno(errno, "error creating signalfd %m"); - goto out; - } - ep_signal.data.fd = fd_signal; + log_device_debug_errno(dev, r, "Failed to get SEQNUM: %m"); - fd_monitor = udev_monitor_get_fd(worker_monitor); - ep_monitor.data.fd = fd_monitor; + log_device_debug(dev, "Processing device (SEQNUM=%s)", seqnum); - fd_ep = epoll_create1(EPOLL_CLOEXEC); - if (fd_ep < 0) { - r = log_error_errno(errno, "error creating epoll fd: %m"); - goto out; - } + udev_event = udev_event_new(dev, arg_exec_delay_usec, manager->rtnl); + if (!udev_event) + return -ENOMEM; - if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_signal, &ep_signal) < 0 || - epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_monitor, &ep_monitor) < 0) { - r = log_error_errno(errno, "fail to add fds to epoll: %m"); - goto out; - } + r = worker_lock_block_device(dev, &fd_lock); + if (r < 0) + return r; - /* Request TERM signal if parent exits. - Ignore error, not much we can do in that case. */ - (void) prctl(PR_SET_PDEATHSIG, SIGTERM); + /* apply rules, create node, symlinks */ + udev_event_execute_rules(udev_event, arg_event_timeout_usec, manager->properties, manager->rules); + udev_event_execute_run(udev_event, arg_event_timeout_usec); - /* Reset OOM score, we only protect the main daemon. */ - write_string_file("/proc/self/oom_score_adj", "0", 0); + if (!manager->rtnl) + /* in case rtnl was initialized */ + manager->rtnl = sd_netlink_ref(udev_event->rtnl); - for (;;) { - struct udev_event *udev_event; - int fd_lock = -1; + /* apply/restore inotify watch */ + if (udev_event->inotify_watch) { + (void) udev_watch_begin(dev); + r = device_update_db(dev); + if (r < 0) + return log_device_debug_errno(dev, r, "Failed to update database under /run/udev/data/: %m"); + } - assert(dev); + log_device_debug(dev, "Device (SEQNUM=%s) processed", seqnum); - log_debug("seq %llu running", udev_device_get_seqnum(dev)); - udev_event = udev_event_new(dev); - if (udev_event == NULL) { - r = -ENOMEM; - goto out; - } + return 0; +} - if (arg_exec_delay > 0) - udev_event->exec_delay = arg_exec_delay; - - /* - * Take a shared lock on the device node; this establishes - * a concept of device "ownership" to serialize device - * access. External processes holding an exclusive lock will - * cause udev to skip the event handling; in the case udev - * acquired the lock, the external process can block until - * udev has finished its event handling. - */ - if (!streq_ptr(udev_device_get_action(dev), "remove") && - shall_lock_device(dev)) { - struct udev_device *d = dev; - - if (streq_ptr("partition", udev_device_get_devtype(d))) - d = udev_device_get_parent(d); - - if (d) { - fd_lock = open(udev_device_get_devnode(d), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK); - if (fd_lock >= 0 && flock(fd_lock, LOCK_SH|LOCK_NB) < 0) { - log_debug_errno(errno, "Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d)); - fd_lock = safe_close(fd_lock); - goto skip; - } - } - } +static int worker_device_monitor_handler(sd_device_monitor *monitor, sd_device *dev, void *userdata) { + Manager *manager = userdata; + int r; - /* needed for renaming netifs */ - udev_event->rtnl = rtnl; + assert(dev); + assert(manager); - /* apply rules, create node, symlinks */ - udev_event_execute_rules(udev_event, - arg_event_timeout_usec, arg_event_timeout_warn_usec, - &manager->properties, - manager->rules); + r = worker_process_device(manager, dev); + if (r < 0) + log_device_warning_errno(dev, r, "Failed to process device, ignoring: %m"); - udev_event_execute_run(udev_event, - arg_event_timeout_usec, arg_event_timeout_warn_usec); + /* send processed event back to libudev listeners */ + r = device_monitor_send_device(monitor, NULL, dev); + if (r < 0) + log_device_warning_errno(dev, r, "Failed to send device, ignoring: %m"); - if (udev_event->rtnl) - /* in case rtnl was initialized */ - rtnl = sd_netlink_ref(udev_event->rtnl); + /* send udevd the result of the event execution */ + r = worker_send_message(manager->worker_watch[WRITE_END]); + if (r < 0) + log_device_warning_errno(dev, r, "Failed to send signal to main daemon, ignoring: %m"); - /* apply/restore inotify watch */ - if (udev_event->inotify_watch) { - udev_watch_begin(udev, dev); - udev_device_update_db(dev); - } + return 1; +} - safe_close(fd_lock); +static int worker_main(Manager *_manager, sd_device_monitor *monitor, sd_device *first_device) { + _cleanup_(sd_device_unrefp) sd_device *dev = first_device; + _cleanup_(manager_freep) Manager *manager = _manager; + int r, ret; - /* send processed event back to libudev listeners */ - udev_monitor_send_device(worker_monitor, NULL, dev); + assert(manager); + assert(monitor); + assert(dev); -skip: - log_debug("seq %llu processed", udev_device_get_seqnum(dev)); + unsetenv("NOTIFY_SOCKET"); - /* send udevd the result of the event execution */ - r = worker_send_message(manager->worker_watch[WRITE_END]); - if (r < 0) - log_error_errno(r, "failed to send result of seq %llu to main daemon: %m", - udev_device_get_seqnum(dev)); - - udev_device_unref(dev); - dev = NULL; - - udev_event_unref(udev_event); - - /* wait for more device messages from main udevd, or term signal */ - while (dev == NULL) { - struct epoll_event ev[4]; - int fdcount; - int i; - - fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1); - if (fdcount < 0) { - if (errno == EINTR) - continue; - r = log_error_errno(errno, "failed to poll: %m"); - goto out; - } - - for (i = 0; i < fdcount; i++) { - if (ev[i].data.fd == fd_monitor && ev[i].events & EPOLLIN) { - dev = udev_monitor_receive_device(worker_monitor); - break; - } else if (ev[i].data.fd == fd_signal && ev[i].events & EPOLLIN) { - struct signalfd_siginfo fdsi; - ssize_t size; - - size = read(fd_signal, &fdsi, sizeof(struct signalfd_siginfo)); - if (size != sizeof(struct signalfd_siginfo)) - continue; - switch (fdsi.ssi_signo) { - case SIGTERM: - goto out; - } - } - } - } - } -out: - udev_device_unref(dev); - manager_free(manager); + assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, -1) >= 0); + + /* Reset OOM score, we only protect the main daemon. */ + r = set_oom_score_adjust(0); + if (r < 0) + log_debug_errno(r, "Failed to reset OOM score, ignoring: %m"); + + /* Clear unnecessary data in Manager object.*/ + manager_clear_for_worker(manager); + + r = sd_event_new(&manager->event); + if (r < 0) + return log_error_errno(r, "Failed to allocate event loop: %m"); + + r = sd_event_add_signal(manager->event, NULL, SIGTERM, NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to set SIGTERM event: %m"); + + r = sd_device_monitor_attach_event(monitor, manager->event); + if (r < 0) + return log_error_errno(r, "Failed to attach event loop to device monitor: %m"); + + r = sd_device_monitor_start(monitor, worker_device_monitor_handler, manager); + if (r < 0) + return log_error_errno(r, "Failed to start device monitor: %m"); + + (void) sd_event_source_set_description(sd_device_monitor_get_event_source(monitor), "worker-device-monitor"); + + /* Process first device */ + (void) worker_device_monitor_handler(monitor, dev, manager); + + r = sd_event_loop(manager->event); + if (r < 0) + return log_error_errno(r, "Event loop failed: %m"); + + r = sd_event_get_exit_code(manager->event, &ret); + if (r < 0) + return log_error_errno(r, "Failed to get exit code: %m"); + + return ret; +} + +static int worker_spawn(Manager *manager, struct event *event) { + _cleanup_(sd_device_monitor_unrefp) sd_device_monitor *worker_monitor = NULL; + struct worker *worker; + pid_t pid; + int r; + + /* listen for new events */ + r = device_monitor_new_full(&worker_monitor, MONITOR_GROUP_NONE, -1); + if (r < 0) + return r; + + /* allow the main daemon netlink address to send devices to the worker */ + r = device_monitor_allow_unicast_sender(worker_monitor, manager->monitor); + if (r < 0) + return log_error_errno(r, "Worker: Failed to set unicast sender: %m"); + + r = device_monitor_enable_receiving(worker_monitor); + if (r < 0) + return log_error_errno(r, "Worker: Failed to enable receiving of device: %m"); + + r = safe_fork("(worker)", FORK_DEATHSIG, &pid); + if (r < 0) { + event->state = EVENT_QUEUED; + return log_error_errno(r, "Failed to fork() worker: %m"); + } + if (r == 0) { + /* Worker process */ + r = worker_main(manager, worker_monitor, sd_device_ref(event->dev)); log_close(); _exit(r < 0 ? EXIT_FAILURE : EXIT_SUCCESS); } - case -1: - event->state = EVENT_QUEUED; - log_error_errno(errno, "fork of child failed: %m"); - break; - default: - { - struct worker *worker; - r = worker_new(&worker, manager, worker_monitor, pid); - if (r < 0) - return; + r = worker_new(&worker, manager, worker_monitor, pid); + if (r < 0) + return log_error_errno(r, "Failed to create worker object: %m"); - worker_attach_event(worker, event); + worker_attach_event(worker, event); - log_debug("seq %llu forked new worker ["PID_FMT"]", udev_device_get_seqnum(event->dev), pid); - break; - } - } + log_device_debug(event->dev, "Worker ["PID_FMT"] is forked for processing SEQNUM=%"PRIu64".", pid, event->seqnum); + return 0; } static void event_run(Manager *manager, struct event *event) { struct worker *worker; Iterator i; + int r; assert(manager); assert(event); HASHMAP_FOREACH(worker, manager->workers, i) { - ssize_t count; - if (worker->state != WORKER_IDLE) continue; - count = udev_monitor_send_device(manager->monitor, worker->monitor, event->dev); - if (count < 0) { - log_error_errno(errno, "worker ["PID_FMT"] did not accept message %zi (%m), kill it", - worker->pid, count); - kill(worker->pid, SIGKILL); + r = device_monitor_send_device(manager->monitor, worker->monitor, event->dev); + if (r < 0) { + log_device_error_errno(event->dev, r, "Worker ["PID_FMT"] did not accept message, killing the worker: %m", + worker->pid); + (void) kill(worker->pid, SIGKILL); worker->state = WORKER_KILLED; continue; } @@ -567,7 +582,7 @@ static void event_run(Manager *manager, struct event *event) { if (hashmap_size(manager->workers) >= arg_children_max) { if (arg_children_max > 1) - log_debug("maximum number (%i) of children reached", hashmap_size(manager->workers)); + log_debug("Maximum number (%u) of children reached.", hashmap_size(manager->workers)); return; } @@ -575,8 +590,11 @@ static void event_run(Manager *manager, struct event *event) { worker_spawn(manager, event); } -static int event_queue_insert(Manager *manager, struct udev_device *dev) { +static int event_queue_insert(Manager *manager, sd_device *dev) { + _cleanup_(sd_device_unrefp) sd_device *clone = NULL; struct event *event; + const char *val; + uint64_t seqnum; int r; assert(manager); @@ -588,36 +606,54 @@ static int event_queue_insert(Manager *manager, struct udev_device *dev) { assert(manager->pid == getpid_cached()); - event = new0(struct event, 1); - if (!event) - return -ENOMEM; + /* We only accepts devices received by device monitor. */ + r = sd_device_get_property_value(dev, "SEQNUM", &val); + if (r < 0) + return r; + + r = safe_atou64(val, &seqnum); + if (r < 0) + return r; + + if (seqnum == 0) + return -EINVAL; + + /* Save original device to restore the state on failures. */ + r = device_shallow_clone(dev, &clone); + if (r < 0) + return r; - event->udev = udev_device_get_udev(dev); - event->manager = manager; - event->dev = dev; - event->dev_kernel = udev_device_shallow_clone(dev); - udev_device_copy_properties(event->dev_kernel, dev); - event->seqnum = udev_device_get_seqnum(dev); - event->devpath = udev_device_get_devpath(dev); - event->devpath_len = strlen(event->devpath); - event->devpath_old = udev_device_get_devpath_old(dev); - event->devnum = udev_device_get_devnum(dev); - event->is_block = streq("block", udev_device_get_subsystem(dev)); - event->ifindex = udev_device_get_ifindex(dev); + r = device_copy_properties(clone, dev); + if (r < 0) + return r; - log_debug("seq %llu queued, '%s' '%s'", udev_device_get_seqnum(dev), - udev_device_get_action(dev), udev_device_get_subsystem(dev)); + event = new(struct event, 1); + if (!event) + return -ENOMEM; - event->state = EVENT_QUEUED; + *event = (struct event) { + .manager = manager, + .dev = sd_device_ref(dev), + .dev_kernel = TAKE_PTR(clone), + .seqnum = seqnum, + .state = EVENT_QUEUED, + }; if (LIST_IS_EMPTY(manager->events)) { r = touch("/run/udev/queue"); if (r < 0) - log_warning_errno(r, "could not touch /run/udev/queue: %m"); + log_warning_errno(r, "Failed to touch /run/udev/queue: %m"); } LIST_APPEND(event, manager->events, event); + if (DEBUG_LOGGING) { + if (sd_device_get_property_value(dev, "ACTION", &val) < 0) + val = NULL; + + log_device_debug(dev, "Device (SEQNUM=%"PRIu64", ACTION=%s) is queued", seqnum, strnull(val)); + } + return 0; } @@ -632,17 +668,48 @@ static void manager_kill_workers(Manager *manager) { continue; worker->state = WORKER_KILLED; - kill(worker->pid, SIGTERM); + (void) kill(worker->pid, SIGTERM); } } /* lookup event for identical, parent, child device */ -static bool is_devpath_busy(Manager *manager, struct event *event) { +static int is_device_busy(Manager *manager, struct event *event) { + const char *subsystem, *devpath, *devpath_old = NULL; + dev_t devnum = makedev(0, 0); struct event *loop_event; - size_t common; + size_t devpath_len; + int r, ifindex = 0; + bool is_block; + + r = sd_device_get_subsystem(event->dev, &subsystem); + if (r < 0) + return r; + + is_block = streq(subsystem, "block"); + + r = sd_device_get_devpath(event->dev, &devpath); + if (r < 0) + return r; + + devpath_len = strlen(devpath); + + r = sd_device_get_property_value(event->dev, "DEVPATH_OLD", &devpath_old); + if (r < 0 && r != -ENOENT) + return r; + + r = sd_device_get_devnum(event->dev, &devnum); + if (r < 0 && r != -ENOENT) + return r; + + r = sd_device_get_ifindex(event->dev, &ifindex); + if (r < 0 && r != -ENOENT) + return r; /* check if queue contains events we depend on */ LIST_FOREACH(event, loop_event, manager->events) { + size_t loop_devpath_len, common; + const char *loop_devpath; + /* we already found a later event, earlier cannot block us, no need to check again */ if (loop_event->seqnum < event->delaying_seqnum) continue; @@ -656,51 +723,65 @@ static bool is_devpath_busy(Manager *manager, struct event *event) { break; /* check major/minor */ - if (major(event->devnum) != 0 && event->devnum == loop_event->devnum && event->is_block == loop_event->is_block) - return true; + if (major(devnum) != 0) { + const char *s; + dev_t d; + + if (sd_device_get_subsystem(loop_event->dev, &s) < 0) + continue; + + if (sd_device_get_devnum(loop_event->dev, &d) >= 0 && + devnum == d && is_block == streq(s, "block")) + return true; + } /* check network device ifindex */ - if (event->ifindex != 0 && event->ifindex == loop_event->ifindex) - return true; + if (ifindex > 0) { + int i; + + if (sd_device_get_ifindex(loop_event->dev, &i) >= 0 && + ifindex == i) + return true; + } + + if (sd_device_get_devpath(loop_event->dev, &loop_devpath) < 0) + continue; /* check our old name */ - if (event->devpath_old != NULL && streq(loop_event->devpath, event->devpath_old)) { + if (devpath_old && streq(devpath_old, loop_devpath)) { event->delaying_seqnum = loop_event->seqnum; return true; } + loop_devpath_len = strlen(loop_devpath); + /* compare devpath */ - common = MIN(loop_event->devpath_len, event->devpath_len); + common = MIN(devpath_len, loop_devpath_len); /* one devpath is contained in the other? */ - if (memcmp(loop_event->devpath, event->devpath, common) != 0) + if (!strneq(devpath, loop_devpath, common)) continue; /* identical device event found */ - if (loop_event->devpath_len == event->devpath_len) { + if (devpath_len == loop_devpath_len) { /* devices names might have changed/swapped in the meantime */ - if (major(event->devnum) != 0 && (event->devnum != loop_event->devnum || event->is_block != loop_event->is_block)) - continue; - if (event->ifindex != 0 && event->ifindex != loop_event->ifindex) + if (major(devnum) != 0 || ifindex > 0) continue; event->delaying_seqnum = loop_event->seqnum; return true; } /* parent device event found */ - if (event->devpath[common] == '/') { + if (devpath[common] == '/') { event->delaying_seqnum = loop_event->seqnum; return true; } /* child device event found */ - if (loop_event->devpath[common] == '/') { + if (loop_devpath[common] == '/') { event->delaying_seqnum = loop_event->seqnum; return true; } - - /* no matching device */ - continue; } return false; @@ -711,8 +792,7 @@ static int on_exit_timeout(sd_event_source *s, uint64_t usec, void *userdata) { assert(manager); - log_error_errno(ETIMEDOUT, "giving up waiting for workers to finish"); - + log_error("Giving up waiting for workers to finish."); sd_event_exit(manager->event, -ETIMEDOUT); return 1; @@ -738,7 +818,7 @@ static void manager_exit(Manager *manager) { manager->fd_inotify = safe_close(manager->fd_inotify); manager->uevent_event = sd_event_source_unref(manager->uevent_event); - manager->monitor = udev_monitor_unref(manager->monitor); + manager->monitor = sd_device_monitor_unref(manager->monitor); /* discard queued events and kill workers */ event_queue_cleanup(manager, EVENT_QUEUED); @@ -762,17 +842,29 @@ static void manager_reload(Manager *manager) { "STATUS=Flushing configuration..."); manager_kill_workers(manager); - manager->rules = udev_rules_unref(manager->rules); - udev_builtin_exit(manager->udev); + manager->rules = udev_rules_free(manager->rules); + udev_builtin_exit(); sd_notifyf(false, "READY=1\n" "STATUS=Processing with %u children at max", arg_children_max); } +static int on_kill_workers_event(sd_event_source *s, uint64_t usec, void *userdata) { + Manager *manager = userdata; + + assert(manager); + + log_debug("Cleanup idle workers"); + manager_kill_workers(manager); + + return 1; +} + static void event_queue_start(Manager *manager) { struct event *event; usec_t usec; + int r; assert(manager); @@ -785,26 +877,32 @@ static void event_queue_start(Manager *manager) { if (manager->last_usec == 0 || (usec - manager->last_usec) > 3 * USEC_PER_SEC) { if (udev_rules_check_timestamp(manager->rules) || - udev_builtin_validate(manager->udev)) + udev_builtin_validate()) manager_reload(manager); manager->last_usec = usec; } - udev_builtin_init(manager->udev); + r = event_source_disable(manager->kill_workers_event); + if (r < 0) + log_warning_errno(r, "Failed to disable event source for cleaning up idle workers, ignoring: %m"); + + udev_builtin_init(); if (!manager->rules) { - manager->rules = udev_rules_new(manager->udev, arg_resolve_names); - if (!manager->rules) + r = udev_rules_new(&manager->rules, arg_resolve_name_timing); + if (r < 0) { + log_warning_errno(r, "Failed to read udev rules: %m"); return; + } } - LIST_FOREACH(event,event,manager->events) { + LIST_FOREACH(event, event, manager->events) { if (event->state != EVENT_QUEUED) continue; /* do not start event if parent or child event is still running */ - if (is_devpath_busy(manager, event)) + if (is_device_busy(manager, event) != 0) continue; event_run(manager, event); @@ -856,9 +954,9 @@ static int on_worker(sd_event_source *s, int fd, uint32_t revents, void *userdat /* nothing more to read */ break; - return log_error_errno(errno, "failed to receive message: %m"); + return log_error_errno(errno, "Failed to receive message: %m"); } else if (size != sizeof(struct worker_message)) { - log_warning_errno(EIO, "ignoring worker message with invalid size %zi bytes", size); + log_warning("Ignoring worker message with invalid size %zi bytes", size); continue; } @@ -870,14 +968,14 @@ static int on_worker(sd_event_source *s, int fd, uint32_t revents, void *userdat } if (!ucred || ucred->pid <= 0) { - log_warning_errno(EIO, "ignoring worker message without valid PID"); + log_warning("Ignoring worker message without valid PID"); continue; } /* lookup worker who sent the signal */ worker = hashmap_get(manager->workers, PID_TO_PTR(ucred->pid)); if (!worker) { - log_debug("worker ["PID_FMT"] returned, but is no longer tracked", ucred->pid); + log_debug("Worker ["PID_FMT"] returned, but is no longer tracked", ucred->pid); continue; } @@ -894,24 +992,23 @@ static int on_worker(sd_event_source *s, int fd, uint32_t revents, void *userdat return 1; } -static int on_uevent(sd_event_source *s, int fd, uint32_t revents, void *userdata) { +static int on_uevent(sd_device_monitor *monitor, sd_device *dev, void *userdata) { Manager *manager = userdata; - struct udev_device *dev; int r; assert(manager); - dev = udev_monitor_receive_device(manager->monitor); - if (dev) { - udev_device_ensure_usec_initialized(dev, NULL); - r = event_queue_insert(manager, dev); - if (r < 0) - udev_device_unref(dev); - else - /* we have fresh events, try to schedule them */ - event_queue_start(manager); + device_ensure_usec_initialized(dev, NULL); + + r = event_queue_insert(manager, dev); + if (r < 0) { + log_device_error_errno(dev, r, "Failed to insert device into event queue: %m"); + return 1; } + /* we have fresh events, try to schedule them */ + event_queue_start(manager); + return 1; } @@ -921,7 +1018,7 @@ static int on_ctrl_msg(sd_event_source *s, int fd, uint32_t revents, void *userd _cleanup_(udev_ctrl_connection_unrefp) struct udev_ctrl_connection *ctrl_conn = NULL; _cleanup_(udev_ctrl_msg_unrefp) struct udev_ctrl_msg *ctrl_msg = NULL; const char *str; - int i; + int i, r; assert(manager); @@ -935,55 +1032,84 @@ static int on_ctrl_msg(sd_event_source *s, int fd, uint32_t revents, void *userd i = udev_ctrl_get_set_log_level(ctrl_msg); if (i >= 0) { - log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i); + log_debug("Received udev control message (SET_LOG_LEVEL), setting log_priority=%i", i); log_set_max_level(i); manager_kill_workers(manager); } if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) { - log_debug("udevd message (STOP_EXEC_QUEUE) received"); + log_debug("Received udev control message (STOP_EXEC_QUEUE)"); manager->stop_exec_queue = true; } if (udev_ctrl_get_start_exec_queue(ctrl_msg) > 0) { - log_debug("udevd message (START_EXEC_QUEUE) received"); + log_debug("Received udev control message (START_EXEC_QUEUE)"); manager->stop_exec_queue = false; event_queue_start(manager); } if (udev_ctrl_get_reload(ctrl_msg) > 0) { - log_debug("udevd message (RELOAD) received"); + log_debug("Received udev control message (RELOAD)"); manager_reload(manager); } str = udev_ctrl_get_set_env(ctrl_msg); - if (str != NULL) { - _cleanup_free_ char *key = NULL; - - key = strdup(str); - if (key) { - char *val; - - val = strchr(key, '='); - if (val != NULL) { - val[0] = '\0'; - val = &val[1]; - if (val[0] == '\0') { - log_debug("udevd message (ENV) received, unset '%s'", key); - udev_list_entry_add(&manager->properties, key, NULL); - } else { - log_debug("udevd message (ENV) received, set '%s=%s'", key, val); - udev_list_entry_add(&manager->properties, key, val); - } - } else - log_error("wrong key format '%s'", key); + if (str) { + _cleanup_free_ char *key = NULL, *val = NULL, *old_key = NULL, *old_val = NULL; + char *eq; + + eq = strchr(str, '='); + if (!eq) { + log_error("Invalid key format '%s'", str); + return 1; + } + + key = strndup(str, eq - str); + if (!key) { + log_oom(); + return 1; } + + old_val = hashmap_remove2(manager->properties, key, (void **) &old_key); + + r = hashmap_ensure_allocated(&manager->properties, &string_hash_ops); + if (r < 0) { + log_oom(); + return 1; + } + + eq++; + if (!isempty(eq)) { + log_debug("Received udev control message (ENV), unsetting '%s'", key); + + r = hashmap_put(manager->properties, key, NULL); + if (r < 0) { + log_oom(); + return 1; + } + } else { + val = strdup(eq); + if (!val) { + log_oom(); + return 1; + } + + log_debug("Received udev control message (ENV), setting '%s=%s'", key, val); + + r = hashmap_put(manager->properties, key, val); + if (r < 0) { + log_oom(); + return 1; + } + } + + key = val = NULL; manager_kill_workers(manager); } i = udev_ctrl_get_set_children_max(ctrl_msg); if (i >= 0) { - log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i", i); + log_debug("Receivd udev control message (SET_MAX_CHILDREN), setting children_max=%i", i); arg_children_max = i; (void) sd_notifyf(false, @@ -992,10 +1118,10 @@ static int on_ctrl_msg(sd_event_source *s, int fd, uint32_t revents, void *userd } if (udev_ctrl_get_ping(ctrl_msg) > 0) - log_debug("udevd message (SYNC) received"); + log_debug("Received udev control message (SYNC)"); if (udev_ctrl_get_exit(ctrl_msg) > 0) { - log_debug("udevd message (EXIT) received"); + log_debug("Received udev control message (EXIT)"); manager_exit(manager); /* keep reference to block the client until we exit TODO: deal with several blocking exit requests */ @@ -1005,19 +1131,38 @@ static int on_ctrl_msg(sd_event_source *s, int fd, uint32_t revents, void *userd return 1; } -static int synthesize_change(struct udev_device *dev) { - char filename[UTIL_PATH_SIZE]; +static int synthesize_change(sd_device *dev) { + const char *subsystem, *sysname, *devname, *syspath, *devtype; + char filename[PATH_MAX]; int r; - if (streq_ptr("block", udev_device_get_subsystem(dev)) && - streq_ptr("disk", udev_device_get_devtype(dev)) && - !startswith(udev_device_get_sysname(dev), "dm-")) { - bool part_table_read = false; - bool has_partitions = false; + r = sd_device_get_subsystem(dev, &subsystem); + if (r < 0) + return r; + + r = sd_device_get_sysname(dev, &sysname); + if (r < 0) + return r; + + r = sd_device_get_devname(dev, &devname); + if (r < 0) + return r; + + r = sd_device_get_syspath(dev, &syspath); + if (r < 0) + return r; + + r = sd_device_get_devtype(dev, &devtype); + if (r < 0) + return r; + + if (streq_ptr("block", subsystem) && + streq_ptr("disk", devtype) && + !startswith(sysname, "dm-")) { + _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; + bool part_table_read = false, has_partitions = false; + sd_device *d; int fd; - struct udev *udev = udev_device_get_udev(dev); - _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL; - struct udev_list_entry *item; /* * Try to re-read the partition table. This only succeeds if @@ -1025,7 +1170,7 @@ static int synthesize_change(struct udev_device *dev) { * partition table is found, and we will not get an event for * the disk. */ - fd = open(udev_device_get_devnode(dev), O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK); + fd = open(devname, O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK); if (fd >= 0) { r = flock(fd, LOCK_EX|LOCK_NB); if (r >= 0) @@ -1037,30 +1182,27 @@ static int synthesize_change(struct udev_device *dev) { } /* search for partitions */ - e = udev_enumerate_new(udev); - if (!e) - return -ENOMEM; - - r = udev_enumerate_add_match_parent(e, dev); + r = sd_device_enumerator_new(&e); if (r < 0) return r; - r = udev_enumerate_add_match_subsystem(e, "block"); + r = sd_device_enumerator_allow_uninitialized(e); if (r < 0) return r; - r = udev_enumerate_scan_devices(e); + r = sd_device_enumerator_add_match_parent(e, dev); if (r < 0) return r; - udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) { - _cleanup_(udev_device_unrefp) struct udev_device *d = NULL; + r = sd_device_enumerator_add_match_subsystem(e, "block", true); + if (r < 0) + return r; - d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); - if (!d) - continue; + FOREACH_DEVICE(e, d) { + const char *t; - if (!streq_ptr("partition", udev_device_get_devtype(d))) + if (sd_device_get_devtype(d, &t) < 0 || + !streq("partition", t)) continue; has_partitions = true; @@ -1079,32 +1221,32 @@ static int synthesize_change(struct udev_device *dev) { * We have partitions but re-reading the partition table did not * work, synthesize "change" for the disk and all partitions. */ - log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev)); - strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL); - write_string_file(filename, "change", WRITE_STRING_FILE_CREATE); + log_debug("Device '%s' is closed, synthesising 'change'", devname); + strscpyl(filename, sizeof(filename), syspath, "/uevent", NULL); + write_string_file(filename, "change", WRITE_STRING_FILE_DISABLE_BUFFER); - udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) { - _cleanup_(udev_device_unrefp) struct udev_device *d = NULL; + FOREACH_DEVICE(e, d) { + const char *t, *n, *s; - d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); - if (!d) + if (sd_device_get_devtype(d, &t) < 0 || + !streq("partition", t)) continue; - if (!streq_ptr("partition", udev_device_get_devtype(d))) + if (sd_device_get_devname(d, &n) < 0 || + sd_device_get_syspath(d, &s) < 0) continue; - log_debug("device %s closed, synthesising partition '%s' 'change'", - udev_device_get_devnode(dev), udev_device_get_devnode(d)); - strscpyl(filename, sizeof(filename), udev_device_get_syspath(d), "/uevent", NULL); - write_string_file(filename, "change", WRITE_STRING_FILE_CREATE); + log_debug("Device '%s' is closed, synthesising partition '%s' 'change'", devname, n); + strscpyl(filename, sizeof(filename), s, "/uevent", NULL); + write_string_file(filename, "change", WRITE_STRING_FILE_DISABLE_BUFFER); } return 0; } - log_debug("device %s closed, synthesising 'change'", udev_device_get_devnode(dev)); - strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL); - write_string_file(filename, "change", WRITE_STRING_FILE_CREATE); + log_debug("Device %s is closed, synthesising 'change'", devname); + strscpyl(filename, sizeof(filename), syspath, "/uevent", NULL); + write_string_file(filename, "change", WRITE_STRING_FILE_DISABLE_BUFFER); return 0; } @@ -1114,9 +1256,14 @@ static int on_inotify(sd_event_source *s, int fd, uint32_t revents, void *userda union inotify_event_buffer buffer; struct inotify_event *e; ssize_t l; + int r; assert(manager); + r = event_source_disable(manager->kill_workers_event); + if (r < 0) + log_warning_errno(r, "Failed to disable event source for cleaning up idle workers, ignoring: %m"); + l = read(fd, &buffer, sizeof(buffer)); if (l < 0) { if (IN_SET(errno, EAGAIN, EINTR)) @@ -1126,24 +1273,20 @@ static int on_inotify(sd_event_source *s, int fd, uint32_t revents, void *userda } FOREACH_INOTIFY_EVENT(e, buffer, l) { - _cleanup_(udev_device_unrefp) struct udev_device *dev = NULL; + _cleanup_(sd_device_unrefp) sd_device *dev = NULL; + const char *devnode; - dev = udev_watch_lookup(manager->udev, e->wd); - if (!dev) + if (udev_watch_lookup(e->wd, &dev) <= 0) continue; - log_debug("inotify event: %x for %s", e->mask, udev_device_get_devnode(dev)); - if (e->mask & IN_CLOSE_WRITE) { - synthesize_change(dev); + if (sd_device_get_devname(dev, &devnode) < 0) + continue; - /* settle might be waiting on us to determine the queue - * state. If we just handled an inotify event, we might have - * generated a "change" event, but we won't have queued up - * the resultant uevent yet. Do that. - */ - on_uevent(NULL, -1, 0, manager); - } else if (e->mask & IN_IGNORED) - udev_watch_end(manager->udev, dev); + log_device_debug(dev, "Inotify event: %x for %s", e->mask, devnode); + if (e->mask & IN_CLOSE_WRITE) + synthesize_change(dev); + else if (e->mask & IN_IGNORED) + udev_watch_end(dev); } return 1; @@ -1171,6 +1314,7 @@ static int on_sighup(sd_event_source *s, const struct signalfd_siginfo *si, void static int on_sigchld(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { Manager *manager = userdata; + int r; assert(manager); @@ -1185,35 +1329,37 @@ static int on_sigchld(sd_event_source *s, const struct signalfd_siginfo *si, voi worker = hashmap_get(manager->workers, PID_TO_PTR(pid)); if (!worker) { - log_warning("worker ["PID_FMT"] is unknown, ignoring", pid); + log_warning("Worker ["PID_FMT"] is unknown, ignoring", pid); continue; } if (WIFEXITED(status)) { if (WEXITSTATUS(status) == 0) - log_debug("worker ["PID_FMT"] exited", pid); + log_debug("Worker ["PID_FMT"] exited", pid); else - log_warning("worker ["PID_FMT"] exited with return code %i", pid, WEXITSTATUS(status)); + 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), signal_to_string(WTERMSIG(status))); + log_warning("Worker ["PID_FMT"] terminated by signal %i (%s)", pid, WTERMSIG(status), signal_to_string(WTERMSIG(status))); } else if (WIFSTOPPED(status)) { - log_info("worker ["PID_FMT"] stopped", pid); + log_info("Worker ["PID_FMT"] stopped", pid); continue; } else if (WIFCONTINUED(status)) { - log_info("worker ["PID_FMT"] continued", pid); + 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); - } + log_warning("Worker ["PID_FMT"] exit with status 0x%04x", pid, status); + + if ((!WIFEXITED(status) || WEXITSTATUS(status) != 0) && worker->event) { + log_device_error(worker->event->dev, "Worker ["PID_FMT"] failed", pid); + + /* delete state from disk */ + device_delete_db(worker->event->dev); + device_tag_index(worker->event->dev, NULL, false); + + /* forward kernel event without amending it */ + r = device_monitor_send_device(manager->monitor, NULL, worker->event->dev_kernel); + if (r < 0) + log_device_error_errno(worker->event->dev_kernel, r, "Failed to send back device to kernel: %m"); } worker_free(worker); @@ -1222,57 +1368,66 @@ static int on_sigchld(sd_event_source *s, const struct signalfd_siginfo *si, voi /* we can start new workers, try to schedule events */ event_queue_start(manager); + /* Disable unnecessary cleanup event */ + if (hashmap_isempty(manager->workers)) { + r = event_source_disable(manager->kill_workers_event); + if (r < 0) + log_warning_errno(r, "Failed to disable event source for cleaning up idle workers, ignoring: %m"); + } + return 1; } static int on_post(sd_event_source *s, void *userdata) { Manager *manager = userdata; - int r; assert(manager); - if (LIST_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, CGROUP_IGNORE_SELF, NULL, NULL, NULL); - } + if (!LIST_IS_EMPTY(manager->events)) + return 1; + + /* There are no pending events. Let's cleanup idle process. */ + + if (!hashmap_isempty(manager->workers)) { + /* There are idle workers */ + (void) event_reset_time(manager->event, &manager->kill_workers_event, CLOCK_MONOTONIC, + now(CLOCK_MONOTONIC) + 3 * USEC_PER_SEC, USEC_PER_SEC, + on_kill_workers_event, manager, 0, "kill-workers-event", false); + return 1; } + /* There are no idle workers. */ + + if (manager->exit) + return sd_event_exit(manager->event, 0); + + if (manager->cgroup) + /* cleanup possible left-over processes in our cgroup */ + (void) cg_kill(SYSTEMD_CGROUP_CONTROLLER, manager->cgroup, SIGKILL, CGROUP_IGNORE_SELF, NULL, NULL, NULL); + return 1; } -static int listen_fds(int *rctrl, int *rnetlink) { - _cleanup_(udev_unrefp) struct udev *udev = NULL; +static int listen_fds(int *ret_ctrl, int *ret_netlink) { int ctrl_fd = -1, netlink_fd = -1; - int fd, n, r; + int fd, n; - assert(rctrl); - assert(rnetlink); + assert(ret_ctrl); + assert(ret_netlink); 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 (sd_is_socket(fd, AF_LOCAL, SOCK_SEQPACKET, -1) > 0) { if (ctrl_fd >= 0) return -EINVAL; ctrl_fd = fd; continue; } - if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1)) { + if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) { if (netlink_fd >= 0) return -EINVAL; netlink_fd = fd; @@ -1282,60 +1437,8 @@ static int listen_fds(int *rctrl, int *rnetlink) { return -EINVAL; } - if (ctrl_fd < 0) { - _cleanup_(udev_ctrl_unrefp) 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"); - - ctrl_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3); - if (ctrl_fd < 0) - return log_error_errno(errno, "could not dup ctrl fd: %m"); - } - - if (netlink_fd < 0) { - _cleanup_(udev_monitor_unrefp) struct udev_monitor *monitor = NULL; - - if (!udev) { - udev = udev_new(); - if (!udev) - return -ENOMEM; - } - - monitor = udev_monitor_new_from_netlink(udev, "kernel"); - if (!monitor) - return log_error_errno(EINVAL, "error initializing netlink socket"); - - (void) udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024); - - r = udev_monitor_enable_receiving(monitor); - if (r < 0) - return log_error_errno(EINVAL, "error binding netlink socket"); - - fd = udev_monitor_get_fd(monitor); - if (fd < 0) - return log_error_errno(netlink_fd, "could not get uevent fd: %m"); - - netlink_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3); - if (netlink_fd < 0) - return log_error_errno(errno, "could not dup netlink fd: %m"); - } - - *rctrl = ctrl_fd; - *rnetlink = netlink_fd; + *ret_ctrl = ctrl_fd; + *ret_netlink = netlink_fd; return 0; } @@ -1360,7 +1463,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat if (proc_cmdline_value_missing(key, value)) return 0; - r = util_log_priority(value); + r = log_level_from_string(value); if (r >= 0) log_set_max_level(r); @@ -1369,11 +1472,7 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat if (proc_cmdline_value_missing(key, value)) return 0; - r = safe_atou64(value, &arg_event_timeout_usec); - if (r >= 0) { - arg_event_timeout_usec *= USEC_PER_SEC; - arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1; - } + r = parse_sec(value, &arg_event_timeout_usec); } else if (proc_cmdline_key_streq(key, "udev.children_max")) { @@ -1387,10 +1486,10 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat if (proc_cmdline_value_missing(key, value)) return 0; - r = safe_atoi(value, &arg_exec_delay); + r = parse_sec(value, &arg_exec_delay_usec); } else if (startswith(key, "udev.")) - log_warning("Unknown udev kernel command line option \"%s\"", key); + log_warning("Unknown udev kernel command line option \"%s\", ignoring", key); if (r < 0) log_warning_errno(r, "Failed to parse \"%s=%s\", ignoring: %m", key, value); @@ -1398,7 +1497,14 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat return 0; } -static void help(void) { +static int help(void) { + _cleanup_free_ char *link = NULL; + int r; + + r = terminal_urlify_man("systemd-udevd.service", "8", &link); + if (r < 0) + return log_oom(); + printf("%s [OPTIONS...]\n\n" "Manages devices.\n\n" " -h --help Print this message\n" @@ -1410,7 +1516,12 @@ static void help(void) { " -t --event-timeout=SECONDS Seconds to wait before terminating an event\n" " -N --resolve-names=early|late|never\n" " When to resolve users and groups\n" - , program_invocation_short_name); + "\nSee the %s for details.\n" + , program_invocation_short_name + , link + ); + + return 0; } static int parse_argv(int argc, char *argv[]) { @@ -1426,14 +1537,12 @@ static int parse_argv(int argc, char *argv[]) { {} }; - int c; + int c, r; assert(argc >= 0); assert(argv); while ((c = getopt_long(argc, argv, "c:de:Dt:N:hV", options, NULL)) >= 0) { - int r; - switch (c) { case 'd': @@ -1442,40 +1551,33 @@ static int parse_argv(int argc, char *argv[]) { case 'c': r = safe_atou(optarg, &arg_children_max); if (r < 0) - log_warning("Invalid --children-max ignored: %s", optarg); + log_warning_errno(r, "Failed to parse --children-max= value '%s', ignoring: %m", optarg); break; case 'e': - r = safe_atoi(optarg, &arg_exec_delay); + r = parse_sec(optarg, &arg_exec_delay_usec); if (r < 0) - log_warning("Invalid --exec-delay ignored: %s", optarg); + log_warning_errno(r, "Failed to parse --exec-delay= value '%s', ignoring: %m", optarg); break; case 't': - r = safe_atou64(optarg, &arg_event_timeout_usec); + r = parse_sec(optarg, &arg_event_timeout_usec); if (r < 0) - log_warning("Invalid --event-timeout ignored: %s", optarg); - else { - arg_event_timeout_usec *= USEC_PER_SEC; - arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1; - } + log_warning_errno(r, "Failed to parse --event-timeout= value '%s', ignoring: %m", optarg); break; case 'D': arg_debug = true; break; - case 'N': - if (streq(optarg, "early")) { - arg_resolve_names = 1; - } else if (streq(optarg, "late")) { - arg_resolve_names = 0; - } else if (streq(optarg, "never")) { - arg_resolve_names = -1; - } else { - log_error("resolve-names must be early, late or never"); - return 0; - } + case 'N': { + ResolveNameTiming t; + + t = resolve_name_timing_from_string(optarg); + if (t < 0) + log_warning("Invalid --resolve-names= value '%s', ignoring.", optarg); + else + arg_resolve_name_timing = t; break; + } case 'h': - help(); - return 0; + return help(); case 'V': printf("%s\n", PACKAGE_VERSION); return 0; @@ -1492,90 +1594,94 @@ static int parse_argv(int argc, char *argv[]) { static int manager_new(Manager **ret, int fd_ctrl, int fd_uevent, const char *cgroup) { _cleanup_(manager_freep) Manager *manager = NULL; - int r, fd_worker, one = 1; + int r, fd_worker; assert(ret); - assert(fd_ctrl >= 0); - assert(fd_uevent >= 0); - manager = new0(Manager, 1); + manager = new(Manager, 1); if (!manager) return log_oom(); - manager->fd_inotify = -1; - manager->worker_watch[WRITE_END] = -1; - manager->worker_watch[READ_END] = -1; - - manager->udev = udev_new(); - if (!manager->udev) - return log_error_errno(errno, "could not allocate udev context: %m"); + *manager = (Manager) { + .fd_inotify = -1, + .worker_watch = { -1, -1 }, + .cgroup = cgroup, + }; - udev_builtin_init(manager->udev); + udev_builtin_init(); - manager->rules = udev_rules_new(manager->udev, arg_resolve_names); + r = udev_rules_new(&manager->rules, arg_resolve_name_timing); if (!manager->rules) - return log_error_errno(ENOMEM, "error reading rules"); + return log_error_errno(r, "Failed to read udev rules: %m"); - LIST_HEAD_INIT(manager->events); - udev_list_init(manager->udev, &manager->properties, true); + manager->ctrl = udev_ctrl_new_from_fd(fd_ctrl); + if (!manager->ctrl) + return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to initialize udev control socket"); - manager->cgroup = cgroup; + if (fd_ctrl < 0) { + r = udev_ctrl_enable_receiving(manager->ctrl); + if (r < 0) + return log_error_errno(r, "Failed to bind udev control socket: %m"); + } - manager->ctrl = udev_ctrl_new_from_fd(manager->udev, fd_ctrl); - if (!manager->ctrl) - return log_error_errno(EINVAL, "error taking over udev control socket"); + fd_ctrl = udev_ctrl_get_fd(manager->ctrl); + if (fd_ctrl < 0) + return log_error_errno(fd_ctrl, "Failed to get udev control socket fd: %m"); - manager->monitor = udev_monitor_new_from_netlink_fd(manager->udev, "kernel", fd_uevent); - if (!manager->monitor) - return log_error_errno(EINVAL, "error taking over netlink socket"); + r = device_monitor_new_full(&manager->monitor, MONITOR_GROUP_KERNEL, fd_uevent); + if (r < 0) + return log_error_errno(r, "Failed to initialize device monitor: %m"); + + (void) sd_device_monitor_set_receive_buffer_size(manager->monitor, 128 * 1024 * 1024); /* unnamed socket from workers to the main daemon */ r = socketpair(AF_LOCAL, SOCK_DGRAM|SOCK_CLOEXEC, 0, manager->worker_watch); if (r < 0) - return log_error_errno(errno, "error creating socketpair: %m"); + return log_error_errno(errno, "Failed to create socketpair for communicating with workers: %m"); fd_worker = manager->worker_watch[READ_END]; - r = setsockopt(fd_worker, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)); + r = setsockopt_int(fd_worker, SOL_SOCKET, SO_PASSCRED, true); if (r < 0) - return log_error_errno(errno, "could not enable SO_PASSCRED: %m"); + return log_error_errno(r, "Failed to enable SO_PASSCRED: %m"); - manager->fd_inotify = udev_watch_init(manager->udev); - if (manager->fd_inotify < 0) - return log_error_errno(ENOMEM, "error initializing inotify"); + r = udev_watch_init(); + if (r < 0) + return log_error_errno(r, "Failed to create inotify descriptor: %m"); + manager->fd_inotify = r; - udev_watch_restore(manager->udev); + udev_watch_restore(); /* block and listen to all signals on signalfd */ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) >= 0); r = sd_event_default(&manager->event); if (r < 0) - return log_error_errno(r, "could not allocate event loop: %m"); + return log_error_errno(r, "Failed to allocate event loop: %m"); r = sd_event_add_signal(manager->event, NULL, SIGINT, on_sigterm, manager); if (r < 0) - return log_error_errno(r, "error creating sigint event source: %m"); + return log_error_errno(r, "Failed to create SIGINT event source: %m"); r = sd_event_add_signal(manager->event, NULL, SIGTERM, on_sigterm, manager); if (r < 0) - return log_error_errno(r, "error creating sigterm event source: %m"); + return log_error_errno(r, "Failed to create SIGTERM event source: %m"); r = sd_event_add_signal(manager->event, NULL, SIGHUP, on_sighup, manager); if (r < 0) - return log_error_errno(r, "error creating sighup event source: %m"); + return log_error_errno(r, "Failed to create SIGHUP event source: %m"); r = sd_event_add_signal(manager->event, NULL, SIGCHLD, on_sigchld, manager); if (r < 0) - return log_error_errno(r, "error creating sigchld event source: %m"); + return log_error_errno(r, "Failed to create SIGCHLD event source: %m"); r = sd_event_set_watchdog(manager->event, true); if (r < 0) - return log_error_errno(r, "error creating watchdog event source: %m"); + return log_error_errno(r, "Failed to create watchdog event source: %m"); r = sd_event_add_io(manager->event, &manager->ctrl_event, fd_ctrl, EPOLLIN, on_ctrl_msg, manager); if (r < 0) - return log_error_errno(r, "error creating ctrl event source: %m"); + return log_error_errno(r, "Failed to create udev control event source: %m"); /* This needs to be after the inotify and uevent handling, to make sure * that the ping is send back after fully processing the pending uevents @@ -1583,42 +1689,48 @@ static int manager_new(Manager **ret, int fd_ctrl, int fd_uevent, const char *cg */ r = sd_event_source_set_priority(manager->ctrl_event, SD_EVENT_PRIORITY_IDLE); if (r < 0) - return log_error_errno(r, "cold not set IDLE event priority for ctrl event source: %m"); + return log_error_errno(r, "Failed to set IDLE event priority for udev control event source: %m"); r = sd_event_add_io(manager->event, &manager->inotify_event, manager->fd_inotify, EPOLLIN, on_inotify, manager); if (r < 0) - return log_error_errno(r, "error creating inotify event source: %m"); + return log_error_errno(r, "Failed to create inotify event source: %m"); - r = sd_event_add_io(manager->event, &manager->uevent_event, fd_uevent, EPOLLIN, on_uevent, manager); + r = sd_device_monitor_attach_event(manager->monitor, manager->event); if (r < 0) - return log_error_errno(r, "error creating uevent event source: %m"); + return log_error_errno(r, "Failed to attach event to device monitor: %m"); + + r = sd_device_monitor_start(manager->monitor, on_uevent, manager); + if (r < 0) + return log_error_errno(r, "Failed to start device monitor: %m"); + + (void) sd_event_source_set_description(sd_device_monitor_get_event_source(manager->monitor), "device-monitor"); r = sd_event_add_io(manager->event, NULL, fd_worker, EPOLLIN, on_worker, manager); if (r < 0) - return log_error_errno(r, "error creating worker event source: %m"); + return log_error_errno(r, "Failed to create worker event source: %m"); r = sd_event_add_post(manager->event, NULL, on_post, manager); if (r < 0) - return log_error_errno(r, "error creating post event source: %m"); + return log_error_errno(r, "Failed to create post event source: %m"); *ret = TAKE_PTR(manager); return 0; } -static int run(int fd_ctrl, int fd_uevent, const char *cgroup) { +static int main_loop(int fd_ctrl, int fd_uevent, const char *cgroup) { _cleanup_(manager_freep) Manager *manager = NULL; int r; r = manager_new(&manager, fd_ctrl, fd_uevent, cgroup); if (r < 0) { - r = log_error_errno(r, "failed to allocate manager object: %m"); + r = log_error_errno(r, "Failed to allocate manager object: %m"); goto exit; } r = udev_rules_apply_static_dev_perms(manager->rules); if (r < 0) - log_error_errno(r, "failed to apply permissions on static device nodes: %m"); + log_error_errno(r, "Failed to apply permissions on static device nodes: %m"); (void) sd_notifyf(false, "READY=1\n" @@ -1626,7 +1738,7 @@ static int run(int fd_ctrl, int fd_uevent, const char *cgroup) { r = sd_event_loop(manager->event); if (r < 0) { - log_error_errno(r, "event loop failed: %m"); + log_error_errno(r, "Event loop failed: %m"); goto exit; } @@ -1641,32 +1753,34 @@ exit: return r; } -int main(int argc, char *argv[]) { +static int run(int argc, char *argv[]) { _cleanup_free_ char *cgroup = NULL; int fd_ctrl = -1, fd_uevent = -1; int r; log_set_target(LOG_TARGET_AUTO); - udev_parse_config(); + udev_parse_config_full(&arg_children_max, &arg_exec_delay_usec, &arg_event_timeout_usec, &arg_resolve_name_timing); log_parse_environment(); log_open(); r = parse_argv(argc, argv); if (r <= 0) - goto exit; + return r; r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, PROC_CMDLINE_STRIP_RD_PREFIX); if (r < 0) - log_warning_errno(r, "failed to parse kernel command line, ignoring: %m"); + log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); if (arg_debug) { log_set_target(LOG_TARGET_CONSOLE); log_set_max_level(LOG_DEBUG); } + log_set_max_level_realm(LOG_REALM_SYSTEMD, log_get_max_level()); + r = must_be_root(); if (r < 0) - goto exit; + return r; if (arg_children_max == 0) { cpu_set_t cpu_set; @@ -1675,34 +1789,28 @@ int main(int argc, char *argv[]) { arg_children_max = 8; if (sched_getaffinity(0, sizeof(cpu_set), &cpu_set) == 0) - arg_children_max += CPU_COUNT(&cpu_set) * 2; + arg_children_max += CPU_COUNT(&cpu_set) * 8; mem_limit = physical_memory() / (128LU*1024*1024); arg_children_max = MAX(10U, MIN(arg_children_max, mem_limit)); - log_debug("set children_max to %u", arg_children_max); + log_debug("Set children_max to %u", arg_children_max); } /* set umask before creating any file/directory */ r = chdir("/"); - if (r < 0) { - r = log_error_errno(errno, "could not change dir to /: %m"); - goto exit; - } + if (r < 0) + return log_error_errno(errno, "Failed to change dir to '/': %m"); umask(022); r = mac_selinux_init(); - if (r < 0) { - log_error_errno(r, "could not initialize labelling: %m"); - goto exit; - } + if (r < 0) + return log_error_errno(r, "Could not initialize labelling: %m"); r = mkdir_errno_wrapper("/run/udev", 0755); - if (r < 0 && r != -EEXIST) { - log_error_errno(r, "could not create /run/udev: %m"); - goto exit; - } + if (r < 0 && r != -EEXIST) + return log_error_errno(r, "Failed to create /run/udev: %m"); dev_setup(NULL, UID_INVALID, GID_INVALID); @@ -1713,17 +1821,15 @@ int main(int argc, char *argv[]) { r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &cgroup); if (r < 0) { if (IN_SET(r, -ENOENT, -ENOMEDIUM)) - log_debug_errno(r, "did not find dedicated cgroup: %m"); + log_debug_errno(r, "Dedicated cgroup not found: %m"); else - log_warning_errno(r, "failed to get cgroup: %m"); + log_warning_errno(r, "Failed to get cgroup: %m"); } } r = listen_fds(&fd_ctrl, &fd_uevent); - if (r < 0) { - r = log_error_errno(r, "could not listen on fds: %m"); - goto exit; - } + if (r < 0) + return log_error_errno(r, "Failed to listen on fds: %m"); if (arg_daemonize) { pid_t pid; @@ -1738,27 +1844,21 @@ int main(int argc, char *argv[]) { } pid = fork(); - switch (pid) { - case 0: - break; - case -1: - r = log_error_errno(errno, "fork of daemon failed: %m"); - goto exit; - default: - mac_selinux_finish(); - log_close(); - _exit(EXIT_SUCCESS); - } + if (pid < 0) + return log_error_errno(errno, "Failed to fork daemon: %m"); + if (pid > 0) + /* parent */ + return 0; - setsid(); + /* child */ + (void) setsid(); - write_string_file("/proc/self/oom_score_adj", "-1000", 0); + r = set_oom_score_adjust(-1000); + if (r < 0) + log_debug_errno(r, "Failed to adjust OOM score, ignoring: %m"); } - r = run(fd_ctrl, fd_uevent, cgroup); - -exit: - mac_selinux_finish(); - log_close(); - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; + return main_loop(fd_ctrl, fd_uevent, cgroup); } + +DEFINE_MAIN_FUNCTION(run); |