#include <time.h>
#include <getopt.h>
#include <dirent.h>
+#include <sys/file.h>
#include <sys/time.h>
#include <sys/prctl.h>
#include <sys/socket.h>
#include <sys/utsname.h>
#include "udev.h"
+#include "udev-util.h"
#include "sd-daemon.h"
#include "cgroup-util.h"
#include "dev-setup.h"
}
static struct udev_rules *rules;
-static struct udev_queue_export *udev_queue_export;
static struct udev_ctrl *udev_ctrl;
static struct udev_monitor *monitor;
static int worker_watch[2] = { -1, -1 };
static sigset_t sigmask_orig;
static UDEV_LIST(event_list);
static UDEV_LIST(worker_list);
-char *udev_cgroup;
+static char *udev_cgroup;
static bool udev_exit;
enum event_state {
return container_of(node, struct worker, node);
}
-static void event_queue_delete(struct event *event, bool export)
+static void event_queue_delete(struct event *event)
{
udev_list_node_remove(&event->node);
-
- if (export) {
- udev_queue_export_device_finished(udev_queue_export, event->dev);
- log_debug("seq %llu done with %i\n", udev_device_get_seqnum(event->dev), event->exitcode);
- }
udev_device_unref(event->dev);
free(event);
}
worker->refcount--;
if (worker->refcount > 0)
return;
- log_debug("worker [%u] cleaned up\n", worker->pid);
+ log_debug("worker [%u] cleaned up", worker->pid);
worker_cleanup(worker);
}
udev_monitor_allow_unicast_sender(worker_monitor, monitor);
udev_monitor_enable_receiving(worker_monitor);
- worker = calloc(1, sizeof(struct worker));
+ worker = new0(struct worker, 1);
if (worker == NULL) {
udev_monitor_unref(worker_monitor);
return;
free(worker);
worker_list_cleanup(udev);
event_queue_cleanup(udev, EVENT_UNDEF);
- udev_queue_export_unref(udev_queue_export);
udev_monitor_unref(monitor);
udev_ctrl_unref(udev_ctrl);
close(fd_signal);
sigfillset(&mask);
fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
if (fd_signal < 0) {
- log_error("error creating signalfd %m\n");
+ log_error("error creating signalfd %m");
rc = 2;
goto out;
}
fd_ep = epoll_create1(EPOLL_CLOEXEC);
if (fd_ep < 0) {
- log_error("error creating epoll fd: %m\n");
+ log_error("error creating epoll fd: %m");
rc = 3;
goto out;
}
- memset(&ep_signal, 0, sizeof(struct epoll_event));
+ memzero(&ep_signal, sizeof(struct epoll_event));
ep_signal.events = EPOLLIN;
ep_signal.data.fd = fd_signal;
fd_monitor = udev_monitor_get_fd(worker_monitor);
- memset(&ep_monitor, 0, sizeof(struct epoll_event));
+ memzero(&ep_monitor, sizeof(struct epoll_event));
ep_monitor.events = EPOLLIN;
ep_monitor.data.fd = fd_monitor;
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) {
- log_error("fail to add fds to epoll: %m\n");
+ log_error("fail to add fds to epoll: %m");
rc = 4;
goto out;
}
for (;;) {
struct udev_event *udev_event;
struct worker_message msg;
- int err;
+ int fd_lock = -1;
+ int err = 0;
- log_debug("seq %llu running\n", udev_device_get_seqnum(dev));
+ log_debug("seq %llu running", udev_device_get_seqnum(dev));
udev_event = udev_event_new(dev);
if (udev_event == NULL) {
rc = 5;
if (exec_delay > 0)
udev_event->exec_delay = exec_delay;
+ /*
+ * Take a "read lock" on the device node; this establishes
+ * a concept of device "ownership" to serialize device
+ * access. External processes holding a "write lock" will
+ * cause udev to skip the event handling; in the case udev
+ * acquired the lock, the external process will block until
+ * udev has finished its event handling.
+ */
+
+ /*
+ * <kabi_> since we make check - device seems unused - we try
+ * ioctl to deactivate - and device is found to be opened
+ * <kay> sure, you try to take a write lock
+ * <kay> if you get it udev is out
+ * <kay> if you can't get it, udev is busy
+ * <kabi_> we cannot deactivate openned device (as it is in-use)
+ * <kay> maybe we should just exclude dm from that thing entirely
+ * <kabi_> IMHO this sounds like a good plan for this moment
+ */
+ if (streq_ptr("block", udev_device_get_subsystem(dev)) &&
+ !startswith("dm-", udev_device_get_sysname(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("Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d));
+ err = -EWOULDBLOCK;
+ fd_lock = safe_close(fd_lock);
+ goto skip;
+ }
+ }
+ }
+
/* apply rules, create node, symlinks */
- err = udev_event_execute_rules(udev_event, rules, &sigmask_orig);
+ udev_event_execute_rules(udev_event, rules, &sigmask_orig);
- if (err == 0)
- udev_event_execute_run(udev_event, &sigmask_orig);
+ udev_event_execute_run(udev_event, &sigmask_orig);
/* apply/restore inotify watch */
- if (err == 0 && udev_event->inotify_watch) {
+ if (udev_event->inotify_watch) {
udev_watch_begin(udev, dev);
udev_device_update_db(dev);
}
+ safe_close(fd_lock);
+
/* send processed event back to libudev listeners */
udev_monitor_send_device(worker_monitor, NULL, dev);
+skip:
/* send udevd the result of the event execution */
- memset(&msg, 0, sizeof(struct worker_message));
- if (err != 0)
- msg.exitcode = err;
+ memzero(&msg, sizeof(struct worker_message));
+ msg.exitcode = err;
msg.pid = getpid();
send(worker_watch[WRITE_END], &msg, sizeof(struct worker_message), 0);
- log_debug("seq %llu processed with %i\n", udev_device_get_seqnum(dev), err);
+ log_debug("seq %llu processed with %i", udev_device_get_seqnum(dev), err);
udev_device_unref(dev);
dev = NULL;
- udev_event_unref(udev_event);
-
- if (udev_event->sigterm)
+ if (udev_event->sigterm) {
+ udev_event_unref(udev_event);
goto out;
+ }
+
+ udev_event_unref(udev_event);
/* wait for more device messages from main udevd, or term signal */
while (dev == NULL) {
if (fdcount < 0) {
if (errno == EINTR)
continue;
- log_error("failed to poll: %m\n");
+ log_error("failed to poll: %m");
goto out;
}
}
out:
udev_device_unref(dev);
- if (fd_signal >= 0)
- close(fd_signal);
- if (fd_ep >= 0)
- close(fd_ep);
+ safe_close(fd_signal);
+ safe_close(fd_ep);
close(fd_inotify);
close(worker_watch[WRITE_END]);
udev_rules_unref(rules);
udev_monitor_unref(worker_monitor);
event->state = EVENT_QUEUED;
free(worker);
- log_error("fork of child failed: %m\n");
+ log_error("fork of child failed: %m");
break;
default:
/* close monitor, but keep address around */
event->state = EVENT_RUNNING;
udev_list_node_append(&worker->node, &worker_list);
children++;
- log_debug("seq %llu forked new worker [%u]\n", udev_device_get_seqnum(event->dev), pid);
+ log_debug("seq %llu forked new worker [%u]", udev_device_get_seqnum(event->dev), pid);
break;
}
}
count = udev_monitor_send_device(monitor, worker->monitor, event->dev);
if (count < 0) {
- log_error("worker [%u] did not accept message %zi (%m), kill it\n", worker->pid, count);
+ log_error("worker [%u] did not accept message %zi (%m), kill it", worker->pid, count);
kill(worker->pid, SIGKILL);
worker->state = WORKER_KILLED;
continue;
if (children >= children_max) {
if (children_max > 1)
- log_debug("maximum number (%i) of children reached\n", children);
+ log_debug("maximum number (%i) of children reached", children);
return;
}
{
struct event *event;
- event = calloc(1, sizeof(struct event));
+ event = new0(struct event, 1);
if (event == NULL)
return -1;
event->nodelay = true;
#endif
- udev_queue_export_device_queued(udev_queue_export, dev);
- log_debug("seq %llu queued, '%s' '%s'\n", udev_device_get_seqnum(dev),
+ log_debug("seq %llu queued, '%s' '%s'", udev_device_get_seqnum(dev),
udev_device_get_action(dev), udev_device_get_subsystem(dev));
event->state = EVENT_QUEUED;
if (match_type != EVENT_UNDEF && match_type != event->state)
continue;
- event_queue_delete(event, false);
+ event_queue_delete(event);
}
}
/* worker returned */
if (worker->event) {
worker->event->exitcode = msg.exitcode;
- event_queue_delete(worker->event, true);
+ event_queue_delete(worker->event);
worker->event = NULL;
}
if (worker->state != WORKER_KILLED)
i = udev_ctrl_get_set_log_level(ctrl_msg);
if (i >= 0) {
- log_debug("udevd message (SET_LOG_PRIORITY) received, log_priority=%i\n", i);
+ log_debug("udevd message (SET_LOG_LEVEL) received, log_priority=%i", i);
log_set_max_level(i);
udev_set_log_priority(udev, i);
worker_kill(udev);
}
if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {
- log_debug("udevd message (STOP_EXEC_QUEUE) received\n");
+ log_debug("udevd message (STOP_EXEC_QUEUE) received");
stop_exec_queue = true;
}
if (udev_ctrl_get_start_exec_queue(ctrl_msg) > 0) {
- log_debug("udevd message (START_EXEC_QUEUE) received\n");
+ log_debug("udevd message (START_EXEC_QUEUE) received");
stop_exec_queue = false;
}
if (udev_ctrl_get_reload(ctrl_msg) > 0) {
- log_debug("udevd message (RELOAD) received\n");
+ log_debug("udevd message (RELOAD) received");
reload = true;
}
val[0] = '\0';
val = &val[1];
if (val[0] == '\0') {
- log_debug("udevd message (ENV) received, unset '%s'\n", key);
+ log_debug("udevd message (ENV) received, unset '%s'", key);
udev_add_property(udev, key, NULL);
} else {
- log_debug("udevd message (ENV) received, set '%s=%s'\n", key, val);
+ log_debug("udevd message (ENV) received, set '%s=%s'", key, val);
udev_add_property(udev, key, val);
}
} else {
- log_error("wrong key format '%s'\n", key);
+ log_error("wrong key format '%s'", key);
}
free(key);
}
i = udev_ctrl_get_set_children_max(ctrl_msg);
if (i >= 0) {
- log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i\n", i);
+ log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i", i);
children_max = i;
}
if (udev_ctrl_get_ping(ctrl_msg) > 0)
- log_debug("udevd message (SYNC) received\n");
+ log_debug("udevd message (SYNC) received");
if (udev_ctrl_get_exit(ctrl_msg) > 0) {
- log_debug("udevd message (EXIT) received\n");
+ log_debug("udevd message (EXIT) received");
udev_exit = true;
/* keep reference to block the client until we exit */
udev_ctrl_connection_ref(ctrl_conn);
return udev_ctrl_connection_unref(ctrl_conn);
}
-/* read inotify messages */
+static int synthesize_change(struct udev_device *dev) {
+ char filename[UTIL_PATH_SIZE];
+ int r;
+
+ 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");
+
+ /* for disks devices, re-trigger all partitions too */
+ if (streq_ptr("block", udev_device_get_subsystem(dev)) &&
+ streq_ptr("disk", udev_device_get_devtype(dev))) {
+ struct udev *udev = udev_device_get_udev(dev);
+ _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+ struct udev_list_entry *item;
+
+ e = udev_enumerate_new(udev);
+ if (!e)
+ return -ENOMEM;
+
+ r = udev_enumerate_add_match_parent(e, dev);
+ if (r < 0)
+ return r;
+
+ r = udev_enumerate_add_match_subsystem(e, "block");
+ if (r < 0)
+ return r;
+
+ r = udev_enumerate_scan_devices(e);
+ udev_list_entry_foreach(item, udev_enumerate_get_list_entry(e)) {
+ _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+
+ d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
+ if (!d)
+ continue;
+
+ if (!streq_ptr("partition", udev_device_get_devtype(d)))
+ 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");
+ }
+ }
+
+ return 0;
+}
+
static int handle_inotify(struct udev *udev)
{
int nbytes, pos;
char *buf;
struct inotify_event *ev;
+ int r;
- if ((ioctl(fd_inotify, FIONREAD, &nbytes) < 0) || (nbytes <= 0))
- return 0;
+ r = ioctl(fd_inotify, FIONREAD, &nbytes);
+ if (r < 0 || nbytes <= 0)
+ return -errno;
buf = malloc(nbytes);
- if (buf == NULL) {
- log_error("error getting buffer for inotify\n");
- return -1;
+ if (!buf) {
+ log_error("error getting buffer for inotify");
+ return -ENOMEM;
}
nbytes = read(fd_inotify, buf, nbytes);
ev = (struct inotify_event *)(buf + pos);
dev = udev_watch_lookup(udev, ev->wd);
- if (dev != NULL) {
- log_debug("inotify event: %x for %s\n", ev->mask, udev_device_get_devnode(dev));
- if (ev->mask & IN_CLOSE_WRITE) {
- char filename[UTIL_PATH_SIZE];
- int fd;
-
- log_debug("device %s closed, synthesising 'change'\n", udev_device_get_devnode(dev));
- strscpyl(filename, sizeof(filename), udev_device_get_syspath(dev), "/uevent", NULL);
- fd = open(filename, O_WRONLY);
- if (fd >= 0) {
- if (write(fd, "change", 6) < 0)
- log_debug("error writing uevent: %m\n");
- close(fd);
- }
- }
- if (ev->mask & IN_IGNORED)
- udev_watch_end(udev, dev);
+ if (!dev)
+ continue;
- udev_device_unref(dev);
- }
+ log_debug("inotify event: %x for %s", ev->mask, udev_device_get_devnode(dev));
+ if (ev->mask & IN_CLOSE_WRITE)
+ synthesize_change(dev);
+ else if (ev->mask & IN_IGNORED)
+ udev_watch_end(udev, dev);
+ udev_device_unref(dev);
}
free(buf);
if (worker->pid != pid)
continue;
- log_debug("worker [%u] exit\n", pid);
+ log_debug("worker [%u] exit", pid);
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) != 0)
- log_error("worker [%u] exit with return code %i\n", pid, WEXITSTATUS(status));
+ log_error("worker [%u] exit with return code %i",
+ pid, WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
- log_error("worker [%u] terminated by signal %i (%s)\n",
- pid, WTERMSIG(status), strsignal(WTERMSIG(status)));
+ log_error("worker [%u] terminated by signal %i (%s)",
+ pid, WTERMSIG(status), strsignal(WTERMSIG(status)));
} else if (WIFSTOPPED(status)) {
- log_error("worker [%u] stopped\n", pid);
+ log_error("worker [%u] stopped", pid);
} else if (WIFCONTINUED(status)) {
- log_error("worker [%u] continued\n", pid);
+ log_error("worker [%u] continued", pid);
} else {
- log_error("worker [%u] exit with status 0x%04x\n", pid, status);
+ log_error("worker [%u] exit with status 0x%04x", pid, status);
}
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
if (worker->event) {
- log_error("worker [%u] failed while handling '%s'\n",
+ log_error("worker [%u] failed while handling '%s'",
pid, worker->event->devpath);
worker->event->exitcode = -32;
- event_queue_delete(worker->event, true);
+ event_queue_delete(worker->event);
+
/* drop reference taken for state 'running' */
worker_unref(worker);
}
if (ctrl < 0 || netlink < 0)
return -1;
- log_debug("ctrl=%i netlink=%i\n", ctrl, netlink);
+ log_debug("ctrl=%i netlink=%i", ctrl, netlink);
*rctrl = ctrl;
*rnetlink = netlink;
return 0;
*/
static void kernel_cmdline_options(struct udev *udev)
{
- char *line, *w, *state;
+ _cleanup_free_ char *line = NULL;
+ char *w, *state;
size_t l;
+ int r;
- if (read_one_line_file("/proc/cmdline", &line) < 0)
+ r = proc_cmdline(&line);
+ if (r < 0)
+ log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
+ if (r <= 0)
return;
FOREACH_WORD_QUOTED(w, l, line, state) {
free(s);
}
-
- free(line);
}
int main(int argc, char *argv[])
udev_set_log_fn(udev, udev_main_log);
log_set_max_level(udev_get_log_priority(udev));
- log_debug("version %s\n", VERSION);
+ log_debug("version %s", VERSION);
label_init("/dev");
for (;;) {
resolve_names = -1;
} else {
fprintf(stderr, "resolve-names must be early, late or never\n");
- log_error("resolve-names must be early, late or never\n");
+ log_error("resolve-names must be early, late or never");
goto exit;
}
break;
if (getuid() != 0) {
fprintf(stderr, "root privileges required\n");
- log_error("root privileges required\n");
+ log_error("root privileges required");
goto exit;
}
close(fd);
} else {
fprintf(stderr, "cannot open /dev/null\n");
- log_error("cannot open /dev/null\n");
+ log_error("cannot open /dev/null");
}
}
monitor = udev_monitor_new_from_netlink_fd(udev, "kernel", fd_netlink);
if (monitor == NULL) {
- log_error("error taking over netlink socket\n");
+ log_error("error taking over netlink socket");
rc = 3;
goto exit;
}
monitor = udev_monitor_new_from_netlink(udev, "kernel");
if (monitor == NULL) {
fprintf(stderr, "error initializing netlink socket\n");
- log_error("error initializing netlink socket\n");
+ log_error("error initializing netlink socket");
rc = 3;
goto exit;
}
if (udev_monitor_enable_receiving(monitor) < 0) {
fprintf(stderr, "error binding netlink socket\n");
- log_error("error binding netlink socket\n");
+ log_error("error binding netlink socket");
rc = 3;
goto exit;
}
if (udev_ctrl_enable_receiving(udev_ctrl) < 0) {
fprintf(stderr, "error binding udev control socket\n");
- log_error("error binding udev control socket\n");
+ log_error("error binding udev control socket");
rc = 1;
goto exit;
}
- udev_monitor_set_receive_buffer_size(monitor, 128*1024*1024);
-
- /* create queue file before signalling 'ready', to make sure we block 'settle' */
- udev_queue_export = udev_queue_export_new(udev);
- if (udev_queue_export == NULL) {
- log_error("error creating queue file\n");
- goto exit;
- }
+ udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024);
if (daemonize) {
pid_t pid;
case 0:
break;
case -1:
- log_error("fork of daemon failed: %m\n");
+ log_error("fork of daemon failed: %m");
rc = 4;
goto exit;
default:
fd_inotify = udev_watch_init(udev);
if (fd_inotify < 0) {
fprintf(stderr, "error initializing inotify\n");
- log_error("error initializing inotify\n");
+ log_error("error initializing inotify");
rc = 4;
goto exit;
}
fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
if (fd_signal < 0) {
fprintf(stderr, "error creating signalfd\n");
- log_error("error creating signalfd\n");
+ log_error("error creating signalfd");
rc = 5;
goto exit;
}
/* unnamed socket from workers to the main daemon */
if (socketpair(AF_LOCAL, SOCK_DGRAM|SOCK_CLOEXEC, 0, worker_watch) < 0) {
fprintf(stderr, "error creating socketpair\n");
- log_error("error creating socketpair\n");
+ log_error("error creating socketpair");
rc = 6;
goto exit;
}
rules = udev_rules_new(udev, resolve_names);
if (rules == NULL) {
- log_error("error reading rules\n");
+ log_error("error reading rules");
goto exit;
}
- memset(&ep_ctrl, 0, sizeof(struct epoll_event));
+ memzero(&ep_ctrl, sizeof(struct epoll_event));
ep_ctrl.events = EPOLLIN;
ep_ctrl.data.fd = fd_ctrl;
- memset(&ep_inotify, 0, sizeof(struct epoll_event));
+ memzero(&ep_inotify, sizeof(struct epoll_event));
ep_inotify.events = EPOLLIN;
ep_inotify.data.fd = fd_inotify;
- memset(&ep_signal, 0, sizeof(struct epoll_event));
+ memzero(&ep_signal, sizeof(struct epoll_event));
ep_signal.events = EPOLLIN;
ep_signal.data.fd = fd_signal;
- memset(&ep_netlink, 0, sizeof(struct epoll_event));
+ memzero(&ep_netlink, sizeof(struct epoll_event));
ep_netlink.events = EPOLLIN;
ep_netlink.data.fd = fd_netlink;
- memset(&ep_worker, 0, sizeof(struct epoll_event));
+ memzero(&ep_worker, sizeof(struct epoll_event));
ep_worker.events = EPOLLIN;
ep_worker.data.fd = fd_worker;
fd_ep = epoll_create1(EPOLL_CLOEXEC);
if (fd_ep < 0) {
- log_error("error creating epoll fd: %m\n");
+ log_error("error creating epoll fd: %m");
goto exit;
}
if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_ctrl, &ep_ctrl) < 0 ||
epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_signal, &ep_signal) < 0 ||
epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_netlink, &ep_netlink) < 0 ||
epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_worker, &ep_worker) < 0) {
- log_error("fail to add fds to epoll: %m\n");
+ log_error("fail to add fds to epoll: %m");
goto exit;
}
children_max += CPU_COUNT(&cpu_set) * 2;
}
}
- log_debug("set children_max to %u\n", children_max);
+ log_debug("set children_max to %u", children_max);
rc = udev_rules_apply_static_dev_perms(rules);
if (rc < 0)
- log_error("failed to apply permissions on static device nodes - %s\n", strerror(-rc));
+ log_error("failed to apply permissions on static device nodes - %s", strerror(-rc));
udev_list_node_init(&event_list);
udev_list_node_init(&worker_list);
worker_kill(udev);
/* exit after all has cleaned up */
- if (udev_list_node_is_empty(&event_list) && udev_list_node_is_empty(&worker_list))
+ if (udev_list_node_is_empty(&event_list) && children == 0)
break;
/* timeout at exit for workers to finish */
- timeout = 30 * 1000;
- } else if (udev_list_node_is_empty(&event_list) && !children) {
+ timeout = 30 * MSEC_PER_SEC;
+ } else if (udev_list_node_is_empty(&event_list) && children == 0) {
/* we are idle */
timeout = -1;
cg_kill(SYSTEMD_CGROUP_CONTROLLER, udev_cgroup, SIGKILL, false, true, NULL);
} else {
/* kill idle or hanging workers */
- timeout = 3 * 1000;
+ timeout = 3 * MSEC_PER_SEC;
+ }
+
+ /* tell settle that we are busy or idle */
+ if (!udev_list_node_is_empty(&event_list)) {
+ int fd;
+
+ fd = open("/run/udev/queue", O_WRONLY|O_CREAT|O_CLOEXEC|O_TRUNC|O_NOFOLLOW, 0444);
+ if (fd >= 0)
+ close(fd);
+ } else {
+ unlink("/run/udev/queue");
}
+
fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), timeout);
if (fdcount < 0)
continue;
/* timeout */
if (udev_exit) {
- log_error("timeout, giving up waiting for workers to finish\n");
+ log_error("timeout, giving up waiting for workers to finish");
break;
}
/* kill idle workers */
if (udev_list_node_is_empty(&event_list)) {
- log_debug("cleanup idle workers\n");
+ log_debug("cleanup idle workers");
worker_kill(udev);
}
if (worker->state != WORKER_RUNNING)
continue;
- if ((now(CLOCK_MONOTONIC) - worker->event_start_usec) > 30 * 1000 * 1000) {
- log_error("worker [%u] %s timeout; kill it\n", worker->pid,
+ if ((now(CLOCK_MONOTONIC) - worker->event_start_usec) > 30 * USEC_PER_SEC) {
+ log_error("worker [%u] %s timeout; kill it", worker->pid,
worker->event ? worker->event->devpath : "<idle>");
kill(worker->pid, SIGKILL);
worker->state = WORKER_KILLED;
+
/* drop reference taken for state 'running' */
worker_unref(worker);
if (worker->event) {
- log_error("seq %llu '%s' killed\n",
- udev_device_get_seqnum(worker->event->dev), worker->event->devpath);
+ log_error("seq %llu '%s' killed", udev_device_get_seqnum(worker->event->dev), worker->event->devpath);
worker->event->exitcode = -64;
- event_queue_delete(worker->event, true);
+ event_queue_delete(worker->event);
worker->event = NULL;
}
}
}
/* check for changed config, every 3 seconds at most */
- if ((now(CLOCK_MONOTONIC) - last_usec) > 3 * 1000 * 1000) {
+ if ((now(CLOCK_MONOTONIC) - last_usec) > 3 * USEC_PER_SEC) {
if (udev_rules_check_timestamp(rules))
reload = true;
if (udev_builtin_validate(udev))
rc = EXIT_SUCCESS;
exit:
- udev_queue_export_cleanup(udev_queue_export);
udev_ctrl_cleanup(udev_ctrl);
+ unlink("/run/udev/queue");
exit_daemonize:
if (fd_ep >= 0)
close(fd_ep);
if (worker_watch[WRITE_END] >= 0)
close(worker_watch[WRITE_END]);
udev_monitor_unref(monitor);
- udev_queue_export_unref(udev_queue_export);
udev_ctrl_connection_unref(ctrl_conn);
udev_ctrl_unref(udev_ctrl);
label_finish();
~ianmdlvl / elogind.git / blobdiff