/*
- * Copyright (C) 2004-2012 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2004-2012 Kay Sievers <kay@vrfy.org>
* Copyright (C) 2004 Chris Friesen <chris_friesen@sympatico.ca>
* Copyright (C) 2009 Canonical Ltd.
* Copyright (C) 2009 Scott James Remnant <scott@netsplit.com>
#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/un.h>
#include <sys/signalfd.h>
#include <sys/epoll.h>
+#include <sys/mount.h>
#include <sys/poll.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include "udev.h"
+#include "udev-util.h"
+#include "rtnl-util.h"
#include "sd-daemon.h"
#include "cgroup-util.h"
#include "dev-setup.h"
-
-static bool debug;
+#include "fileio.h"
void udev_main_log(struct udev *udev, int priority,
const char *file, int line, const char *fn,
- const char *format, va_list args)
-{
+ const char *format, va_list args) {
log_metav(priority, file, line, fn, format, args);
}
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 bool stop_exec_queue;
static bool reload;
static int children;
-static int children_max;
-static int exec_delay;
+static bool arg_debug = false;
+static int arg_daemonize = false;
+static int arg_resolve_names = 1;
+static int arg_children_max;
+static int arg_exec_delay;
+static usec_t arg_event_timeout_usec = 180 * USEC_PER_SEC;
+static usec_t arg_event_timeout_warn_usec = 180 * USEC_PER_SEC / 3;
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 {
size_t devpath_len;
const char *devpath_old;
dev_t devnum;
- bool is_block;
int ifindex;
+ bool is_block;
};
-static inline struct event *node_to_event(struct udev_list_node *node)
-{
+static inline struct event *node_to_event(struct udev_list_node *node) {
return container_of(node, struct event, node);
}
struct udev_monitor *monitor;
enum worker_state state;
struct event *event;
- unsigned long long event_start_usec;
+ usec_t event_start_usec;
+ bool event_warned;
};
/* passed from worker to main process */
int exitcode;
};
-static inline struct worker *node_to_worker(struct udev_list_node *node)
-{
+static inline struct worker *node_to_worker(struct udev_list_node *node) {
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);
}
-static struct worker *worker_ref(struct worker *worker)
-{
+static struct worker *worker_ref(struct worker *worker) {
worker->refcount++;
return worker;
}
-static void worker_cleanup(struct worker *worker)
-{
+static void worker_cleanup(struct worker *worker) {
udev_list_node_remove(&worker->node);
udev_monitor_unref(worker->monitor);
children--;
free(worker);
}
-static void worker_unref(struct worker *worker)
-{
+static void worker_unref(struct worker *worker) {
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);
}
-static void worker_list_cleanup(struct udev *udev)
-{
+static void worker_list_cleanup(struct udev *udev) {
struct udev_list_node *loop, *tmp;
udev_list_node_foreach_safe(loop, tmp, &worker_list) {
}
}
-static void worker_new(struct event *event)
-{
+static void worker_new(struct event *event) {
struct udev *udev = event->udev;
struct worker *worker;
struct udev_monitor *worker_monitor;
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;
case 0: {
struct udev_device *dev = NULL;
int fd_monitor;
+ _cleanup_rtnl_unref_ sd_rtnl *rtnl = NULL;
struct epoll_event ep_signal, ep_monitor;
sigset_t mask;
int rc = EXIT_SUCCESS;
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;
}
prctl(PR_SET_PDEATHSIG, SIGTERM);
/* reset OOM score, we only protect the main daemon */
- write_one_line_file("/proc/self/oom_score_adj", "0");
+ write_string_file("/proc/self/oom_score_adj", "0");
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;
/* needed for SIGCHLD/SIGTERM in spawn() */
udev_event->fd_signal = fd_signal;
- if (exec_delay > 0)
- udev_event->exec_delay = exec_delay;
+ 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") &&
+ streq_ptr("block", udev_device_get_subsystem(dev)) &&
+ !startswith(udev_device_get_sysname(dev), "dm-") &&
+ !startswith(udev_device_get_sysname(dev), "md")) {
+ 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;
+ }
+ }
+ }
+
+ /* needed for renaming netifs */
+ udev_event->rtnl = rtnl;
/* apply rules, create node, symlinks */
- err = udev_event_execute_rules(udev_event, rules, &sigmask_orig);
+ udev_event_execute_rules(udev_event, arg_event_timeout_usec, arg_event_timeout_warn_usec, rules, &sigmask_orig);
- if (err == 0)
- udev_event_execute_run(udev_event, &sigmask_orig);
+ udev_event_execute_run(udev_event, arg_event_timeout_usec, arg_event_timeout_warn_usec, &sigmask_orig);
+
+ /* in case rtnl was initialized */
+ rtnl = sd_rtnl_ref(udev_event->rtnl);
/* 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;
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 */
worker->monitor = worker_monitor;
worker->pid = pid;
worker->state = WORKER_RUNNING;
- worker->event_start_usec = now_usec();
+ worker->event_start_usec = now(CLOCK_MONOTONIC);
+ worker->event_warned = false;
worker->event = event;
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;
}
}
-static void event_run(struct event *event)
-{
+static void event_run(struct event *event) {
struct udev_list_node *loop;
udev_list_node_foreach(loop, &worker_list) {
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;
worker_ref(worker);
worker->event = event;
worker->state = WORKER_RUNNING;
- worker->event_start_usec = now_usec();
+ worker->event_start_usec = now(CLOCK_MONOTONIC);
+ worker->event_warned = false;
event->state = EVENT_RUNNING;
return;
}
- if (children >= children_max) {
- if (children_max > 1)
- log_debug("maximum number (%i) of children reached\n", children);
+ if (children >= arg_children_max) {
+ if (arg_children_max > 1)
+ log_debug("maximum number (%i) of children reached", children);
return;
}
worker_new(event);
}
-static int event_queue_insert(struct udev_device *dev)
-{
+static int event_queue_insert(struct udev_device *dev) {
struct event *event;
- event = calloc(1, sizeof(struct event));
+ event = new0(struct event, 1);
if (event == NULL)
return -1;
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 = (strcmp("block", udev_device_get_subsystem(dev)) == 0);
+ event->is_block = streq("block", udev_device_get_subsystem(dev));
event->ifindex = udev_device_get_ifindex(dev);
- 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;
return 0;
}
-static void worker_kill(struct udev *udev)
-{
+static void worker_kill(struct udev *udev) {
struct udev_list_node *loop;
udev_list_node_foreach(loop, &worker_list) {
}
/* lookup event for identical, parent, child device */
-static bool is_devpath_busy(struct event *event)
-{
+static bool is_devpath_busy(struct event *event) {
struct udev_list_node *loop;
size_t common;
return true;
/* check our old name */
- if (event->devpath_old != NULL && strcmp(loop_event->devpath, event->devpath_old) == 0) {
+ if (event->devpath_old != NULL && streq(loop_event->devpath, event->devpath_old)) {
event->delaying_seqnum = loop_event->seqnum;
return true;
}
return false;
}
-static void event_queue_start(struct udev *udev)
-{
+static void event_queue_start(struct udev *udev) {
struct udev_list_node *loop;
udev_list_node_foreach(loop, &event_list) {
}
}
-static void event_queue_cleanup(struct udev *udev, enum event_state match_type)
-{
+static void event_queue_cleanup(struct udev *udev, enum event_state match_type) {
struct udev_list_node *loop, *tmp;
udev_list_node_foreach_safe(loop, tmp, &event_list) {
if (match_type != EVENT_UNDEF && match_type != event->state)
continue;
- event_queue_delete(event, false);
+ event_queue_delete(event);
}
}
-static void worker_returned(int fd_worker)
-{
+static void worker_returned(int fd_worker) {
for (;;) {
struct worker_message msg;
ssize_t size;
/* 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)
}
/* receive the udevd message from userspace */
-static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl)
-{
+static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl) {
struct udev *udev = udev_ctrl_get_udev(uctrl);
struct udev_ctrl_connection *ctrl_conn;
struct udev_ctrl_msg *ctrl_msg = NULL;
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);
- children_max = i;
+ log_debug("udevd message (SET_MAX_CHILDREN) received, children_max=%i", i);
+ arg_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 handle_inotify(struct udev *udev)
-{
+static int synthesize_change(struct udev_device *dev) {
+ char filename[UTIL_PATH_SIZE];
+ 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;
+ int fd;
+ struct udev *udev = udev_device_get_udev(dev);
+ _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+ struct udev_list_entry *item;
+
+ /*
+ * Try to re-read the partition table. This only succeeds if
+ * none of the devices is busy. The kernel returns 0 if no
+ * 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);
+ if (fd >= 0) {
+ r = flock(fd, LOCK_EX|LOCK_NB);
+ if (r >= 0)
+ r = ioctl(fd, BLKRRPART, 0);
+
+ close(fd);
+ if (r >= 0)
+ part_table_read = true;
+ }
+
+ /* search for partitions */
+ 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);
+ if (r < 0)
+ return r;
+
+ 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;
+
+ has_partitions = true;
+ break;
+ }
+
+ /*
+ * We have partitions and re-read the table, the kernel already sent
+ * out a "change" event for the disk, and "remove/add" for all
+ * partitions.
+ */
+ if (part_table_read && has_partitions)
+ return 0;
+
+ /*
+ * 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");
+
+ 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;
+ }
+
+ 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");
+
+ 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));
- util_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);
return 0;
}
-static void handle_signal(struct udev *udev, int signo)
-{
+static void handle_signal(struct udev *udev, int signo) {
switch (signo) {
case SIGINT:
case SIGTERM:
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);
}
}
}
-static void static_dev_create_from_modules(struct udev *udev)
-{
- struct utsname kernel;
- char modules[UTIL_PATH_SIZE];
- char buf[4096];
- FILE *f;
-
- uname(&kernel);
- util_strscpyl(modules, sizeof(modules), ROOTPREFIX "/lib/modules/", kernel.release, "/modules.devname", NULL);
- f = fopen(modules, "re");
- if (f == NULL)
- return;
-
- while (fgets(buf, sizeof(buf), f) != NULL) {
- char *s;
- const char *modname;
- const char *devname;
- const char *devno;
- int maj, min;
- char type;
- mode_t mode;
- char filename[UTIL_PATH_SIZE];
-
- if (buf[0] == '#')
- continue;
-
- modname = buf;
- s = strchr(modname, ' ');
- if (s == NULL)
- continue;
- s[0] = '\0';
-
- devname = &s[1];
- s = strchr(devname, ' ');
- if (s == NULL)
- continue;
- s[0] = '\0';
-
- devno = &s[1];
- s = strchr(devno, ' ');
- if (s == NULL)
- s = strchr(devno, '\n');
- if (s != NULL)
- s[0] = '\0';
- if (sscanf(devno, "%c%u:%u", &type, &maj, &min) != 3)
- continue;
-
- mode = 0600;
- if (type == 'c')
- mode |= S_IFCHR;
- else if (type == 'b')
- mode |= S_IFBLK;
- else
- continue;
-
- util_strscpyl(filename, sizeof(filename), "/dev/", devname, NULL);
- mkdir_parents_label(filename, 0755);
- label_context_set(filename, mode);
- log_debug("mknod '%s' %c%u:%u\n", filename, type, maj, min);
- if (mknod(filename, mode, makedev(maj, min)) < 0 && errno == EEXIST)
- utimensat(AT_FDCWD, filename, NULL, 0);
- label_context_clear();
- }
-
- fclose(f);
-}
-
-static int mem_size_mb(void)
-{
- FILE *f;
- char buf[4096];
- long int memsize = -1;
-
- f = fopen("/proc/meminfo", "re");
- if (f == NULL)
- return -1;
-
- while (fgets(buf, sizeof(buf), f) != NULL) {
- long int value;
-
- if (sscanf(buf, "MemTotal: %ld kB", &value) == 1) {
- memsize = value / 1024;
- break;
- }
- }
-
- fclose(f);
- return memsize;
-}
-
-static int convert_db(struct udev *udev)
-{
- char filename[UTIL_PATH_SIZE];
- struct udev_enumerate *udev_enumerate;
- struct udev_list_entry *list_entry;
-
- /* current database */
- if (access("/run/udev/data", F_OK) >= 0)
- return 0;
-
- /* make sure we do not get here again */
- mkdir_p("/run/udev/data", 0755);
-
- /* old database */
- util_strscpyl(filename, sizeof(filename), "/dev/.udev/db", NULL);
- if (access(filename, F_OK) < 0)
- return 0;
-
- print_kmsg("converting old udev database\n");
-
- udev_enumerate = udev_enumerate_new(udev);
- if (udev_enumerate == NULL)
- return -1;
- udev_enumerate_scan_devices(udev_enumerate);
- udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(udev_enumerate)) {
- struct udev_device *device;
-
- device = udev_device_new_from_syspath(udev, udev_list_entry_get_name(list_entry));
- if (device == NULL)
- continue;
-
- /* try to find the old database for devices without a current one */
- if (udev_device_read_db(device, NULL) < 0) {
- bool have_db;
- const char *id;
- struct stat stats;
- char devpath[UTIL_PATH_SIZE];
- char from[UTIL_PATH_SIZE];
-
- have_db = false;
-
- /* find database in old location */
- id = udev_device_get_id_filename(device);
- util_strscpyl(from, sizeof(from), "/dev/.udev/db/", id, NULL);
- if (lstat(from, &stats) == 0) {
- if (!have_db) {
- udev_device_read_db(device, from);
- have_db = true;
- }
- unlink(from);
- }
-
- /* find old database with $subsys:$sysname name */
- util_strscpyl(from, sizeof(from), "/dev/.udev/db/",
- udev_device_get_subsystem(device), ":", udev_device_get_sysname(device), NULL);
- if (lstat(from, &stats) == 0) {
- if (!have_db) {
- udev_device_read_db(device, from);
- have_db = true;
- }
- unlink(from);
- }
-
- /* find old database with the encoded devpath name */
- util_path_encode(udev_device_get_devpath(device), devpath, sizeof(devpath));
- util_strscpyl(from, sizeof(from), "/dev/.udev/db/", devpath, NULL);
- if (lstat(from, &stats) == 0) {
- if (!have_db) {
- udev_device_read_db(device, from);
- have_db = true;
- }
- unlink(from);
- }
-
- /* write out new database */
- if (have_db)
- udev_device_update_db(device);
- }
- udev_device_unref(device);
- }
- udev_enumerate_unref(udev_enumerate);
- return 0;
-}
-
-static int systemd_fds(struct udev *udev, int *rctrl, int *rnetlink)
-{
+static int systemd_fds(struct udev *udev, int *rctrl, int *rnetlink) {
int ctrl = -1, netlink = -1;
int fd, n;
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;
* udev.children-max=<number of workers> events are fully serialized if set to 1
* udev.exec-delay=<number of seconds> delay execution of every executed program
*/
-static void kernel_cmdline_options(struct udev *udev)
-{
- char *line, *w, *state;
+static void kernel_cmdline_options(struct udev *udev) {
+ _cleanup_free_ char *line = NULL;
+ const char *word, *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) {
+ FOREACH_WORD_QUOTED(word, l, line, state) {
char *s, *opt;
- s = strndup(w, l);
+ s = strndup(word, l);
if (!s)
break;
else
opt = s;
- if (startswith(opt, "udev.log-priority="))
- udev_set_log_priority(udev, util_log_priority(opt + 18));
-
- if (startswith(opt, "udev.children-max="))
- children_max = strtoul(opt + 18, NULL, 0);
-
- if (startswith(opt, "udev.exec-delay="))
- exec_delay = strtoul(opt + 16, NULL, 0);
+ if (startswith(opt, "udev.log-priority=")) {
+ int prio;
+
+ prio = util_log_priority(opt + 18);
+ log_set_max_level(prio);
+ udev_set_log_priority(udev, prio);
+ } else if (startswith(opt, "udev.children-max=")) {
+ r = safe_atoi(opt + 18, &arg_children_max);
+ if (r < 0)
+ log_warning("Invalid udev.children-max ignored: %s", opt + 18);
+ } else if (startswith(opt, "udev.exec-delay=")) {
+ r = safe_atoi(opt + 16, &arg_exec_delay);
+ if (r < 0)
+ log_warning("Invalid udev.exec-delay ignored: %s", opt + 16);
+ } else if (startswith(opt, "udev.event-timeout=")) {
+ r = safe_atou64(opt + 16, &arg_event_timeout_usec);
+ if (r < 0) {
+ log_warning("Invalid udev.event-timeout ignored: %s", opt + 16);
+ break;
+ }
+ arg_event_timeout_usec *= USEC_PER_SEC;
+ arg_event_timeout_warn_usec = (arg_event_timeout_usec / 3) ? : 1;
+ }
free(s);
}
+}
- free(line);
+static void help(void) {
+ printf("%s [OPTIONS...]\n\n"
+ "Manages devices.\n\n"
+ " --daemon\n"
+ " --debug\n"
+ " --children-max=<maximum number of workers>\n"
+ " --exec-delay=<seconds to wait before executing RUN=>\n"
+ " --event-timeout=<seconds to wait before terminating an event>\n"
+ " --resolve-names=early|late|never\n"
+ " --version\n"
+ " --help\n"
+ , program_invocation_short_name);
}
-int main(int argc, char *argv[])
-{
- struct udev *udev;
- sigset_t mask;
- int daemonize = false;
- int resolve_names = 1;
+static int parse_argv(int argc, char *argv[]) {
static const struct option options[] = {
- { "daemon", no_argument, NULL, 'd' },
- { "debug", no_argument, NULL, 'D' },
- { "children-max", required_argument, NULL, 'c' },
- { "exec-delay", required_argument, NULL, 'e' },
- { "resolve-names", required_argument, NULL, 'N' },
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, 'V' },
+ { "daemon", no_argument, NULL, 'd' },
+ { "debug", no_argument, NULL, 'D' },
+ { "children-max", required_argument, NULL, 'c' },
+ { "exec-delay", required_argument, NULL, 'e' },
+ { "event-timeout", required_argument, NULL, 't' },
+ { "resolve-names", required_argument, NULL, 'N' },
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
{}
};
- int fd_ctrl = -1;
- int fd_netlink = -1;
- int fd_worker = -1;
- struct epoll_event ep_ctrl, ep_inotify, ep_signal, ep_netlink, ep_worker;
- struct udev_ctrl_connection *ctrl_conn = NULL;
- int rc = 1;
- udev = udev_new();
- if (udev == NULL)
- goto exit;
+ int c;
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
- udev_set_log_fn(udev, udev_main_log);
- log_debug("version %s\n", VERSION);
- label_init("/dev");
+ assert(argc >= 0);
+ assert(argv);
- for (;;) {
- int option;
+ while ((c = getopt_long(argc, argv, "c:de:DtN:hV", options, NULL)) >= 0) {
+ int r;
- option = getopt_long(argc, argv, "c:deDtN:hV", options, NULL);
- if (option == -1)
- break;
+ switch (c) {
- switch (option) {
case 'd':
- daemonize = true;
+ arg_daemonize = true;
break;
case 'c':
- children_max = strtoul(optarg, NULL, 0);
+ r = safe_atoi(optarg, &arg_children_max);
+ if (r < 0)
+ log_warning("Invalid --children-max ignored: %s", optarg);
break;
case 'e':
- exec_delay = strtoul(optarg, NULL, 0);
+ r = safe_atoi(optarg, &arg_exec_delay);
+ if (r < 0)
+ log_warning("Invalid --exec-delay ignored: %s", optarg);
+ break;
+ case 't':
+ r = safe_atou64(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;
+ }
break;
case 'D':
- debug = true;
- log_set_max_level(LOG_DEBUG);
- udev_set_log_priority(udev, LOG_INFO);
+ arg_debug = true;
break;
case 'N':
- if (strcmp (optarg, "early") == 0) {
- resolve_names = 1;
- } else if (strcmp (optarg, "late") == 0) {
- resolve_names = 0;
- } else if (strcmp (optarg, "never") == 0) {
- resolve_names = -1;
+ 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 {
- fprintf(stderr, "resolve-names must be early, late or never\n");
- log_error("resolve-names must be early, late or never\n");
- goto exit;
+ log_error("resolve-names must be early, late or never");
+ return 0;
}
break;
case 'h':
- printf("Usage: udevd OPTIONS\n"
- " --daemon\n"
- " --debug\n"
- " --children-max=<maximum number of workers>\n"
- " --exec-delay=<seconds to wait before executing RUN=>\n"
- " --resolve-names=early|late|never\n"
- " --version\n"
- " --help\n"
- "\n");
- goto exit;
+ help();
+ return 0;
case 'V':
printf("%s\n", VERSION);
- goto exit;
+ return 0;
+ case '?':
+ return -EINVAL;
default:
- goto exit;
+ assert_not_reached("Unhandled option");
+
}
}
+ return 1;
+}
+
+int main(int argc, char *argv[]) {
+ struct udev *udev;
+ sigset_t mask;
+ int fd_ctrl = -1;
+ int fd_netlink = -1;
+ int fd_worker = -1;
+ struct epoll_event ep_ctrl = { .events = EPOLLIN };
+ struct epoll_event ep_inotify = { .events = EPOLLIN };
+ struct epoll_event ep_signal = { .events = EPOLLIN };
+ struct epoll_event ep_netlink = { .events = EPOLLIN };
+ struct epoll_event ep_worker = { .events = EPOLLIN };
+ struct udev_ctrl_connection *ctrl_conn = NULL;
+ int rc = 1, r;
+
+ udev = udev_new();
+ if (udev == NULL)
+ goto exit;
+
+ log_set_target(LOG_TARGET_AUTO);
+ log_parse_environment();
+ log_open();
+
+ udev_set_log_fn(udev, udev_main_log);
+ log_set_max_level(udev_get_log_priority(udev));
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto exit;
+
kernel_cmdline_options(udev);
+ if (arg_debug) {
+ log_set_max_level(LOG_DEBUG);
+ udev_set_log_priority(udev, LOG_DEBUG);
+ }
+
if (getuid() != 0) {
- fprintf(stderr, "root privileges required\n");
- log_error("root privileges required\n");
+ log_error("root privileges required");
+ goto exit;
+ }
+
+ r = label_init("/dev");
+ if (r < 0) {
+ log_error("could not initialize labelling: %s", strerror(-r));
goto exit;
}
/* set umask before creating any file/directory */
- chdir("/");
+ r = chdir("/");
+ if (r < 0) {
+ log_error("could not change dir to /: %m");
+ goto exit;
+ }
+
umask(022);
- mkdir("/run/udev", 0755);
+ r = mkdir("/run/udev", 0755);
+ if (r < 0) {
+ log_error("could not create /run/udev: %m");
+ goto exit;
+ }
- dev_setup();
- static_dev_create_from_modules(udev);
+ dev_setup(NULL);
/* before opening new files, make sure std{in,out,err} fds are in a sane state */
- if (daemonize) {
+ if (arg_daemonize) {
int fd;
fd = open("/dev/null", O_RDWR);
if (fd > STDERR_FILENO)
close(fd);
} else {
- fprintf(stderr, "cannot open /dev/null\n");
- log_error("cannot open /dev/null\n");
+ log_error("cannot open /dev/null");
}
}
if (systemd_fds(udev, &fd_ctrl, &fd_netlink) >= 0) {
- /* get control and netlink socket from from systemd */
+ /* get control and netlink socket from systemd */
udev_ctrl = udev_ctrl_new_from_fd(udev, fd_ctrl);
if (udev_ctrl == NULL) {
log_error("error taking over udev control socket");
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;
}
/* get our own cgroup, we regularly kill everything udev has left behind */
- if (cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 0, &udev_cgroup) < 0)
+ if (cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &udev_cgroup) < 0)
udev_cgroup = NULL;
} else {
/* open control and netlink socket */
udev_ctrl = udev_ctrl_new(udev);
if (udev_ctrl == NULL) {
- fprintf(stderr, "error initializing udev control socket");
log_error("error initializing udev control socket");
rc = 1;
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);
+ udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024);
+
+ log_info("starting version " VERSION "\n");
+
+ udev_builtin_init(udev);
- /* 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");
+ rules = udev_rules_new(udev, arg_resolve_names);
+ if (rules == NULL) {
+ log_error("error reading rules");
goto exit;
}
- if (daemonize) {
+ rc = udev_rules_apply_static_dev_perms(rules);
+ if (rc < 0)
+ log_error("failed to apply permissions on static device nodes - %s", strerror(-rc));
+
+ if (arg_daemonize) {
pid_t pid;
pid = fork();
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:
setsid();
- write_one_line_file("/proc/self/oom_score_adj", "-1000");
+ write_string_file("/proc/self/oom_score_adj", "-1000");
} else {
sd_notify(1, "READY=1");
}
- print_kmsg("starting version " VERSION "\n");
+ if (arg_children_max <= 0) {
+ cpu_set_t cpu_set;
- if (!debug) {
- int fd;
+ arg_children_max = 8;
- fd = open("/dev/null", O_RDWR);
- if (fd >= 0) {
- dup2(fd, STDIN_FILENO);
- dup2(fd, STDOUT_FILENO);
- dup2(fd, STDERR_FILENO);
- close(fd);
+ if (sched_getaffinity(0, sizeof (cpu_set), &cpu_set) == 0) {
+ arg_children_max += CPU_COUNT(&cpu_set) * 2;
}
}
+ log_debug("set children_max to %u", arg_children_max);
+
+ udev_list_node_init(&event_list);
+ udev_list_node_init(&worker_list);
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;
}
sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);
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;
}
fd_worker = worker_watch[READ_END];
- udev_builtin_init(udev);
-
- rules = udev_rules_new(udev, resolve_names);
- if (rules == NULL) {
- log_error("error reading rules\n");
- goto exit;
- }
-
- memset(&ep_ctrl, 0, sizeof(struct epoll_event));
- ep_ctrl.events = EPOLLIN;
ep_ctrl.data.fd = fd_ctrl;
-
- memset(&ep_inotify, 0, sizeof(struct epoll_event));
- ep_inotify.events = EPOLLIN;
ep_inotify.data.fd = fd_inotify;
-
- memset(&ep_signal, 0, sizeof(struct epoll_event));
- ep_signal.events = EPOLLIN;
ep_signal.data.fd = fd_signal;
-
- memset(&ep_netlink, 0, sizeof(struct epoll_event));
- ep_netlink.events = EPOLLIN;
ep_netlink.data.fd = fd_netlink;
-
- memset(&ep_worker, 0, 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;
}
- /* if needed, convert old database from earlier udev version */
- convert_db(udev);
-
- if (children_max <= 0) {
- int memsize = mem_size_mb();
-
- /* set value depending on the amount of RAM */
- if (memsize > 0)
- children_max = 16 + (memsize / 8);
- else
- children_max = 16;
- }
- log_debug("set children_max to %u\n", children_max);
-
- udev_rules_apply_static_dev_perms(rules);
-
- udev_list_node_init(&event_list);
- udev_list_node_init(&worker_list);
-
for (;;) {
- static unsigned long long last_usec;
+ static usec_t last_usec;
struct epoll_event ev[8];
int fdcount;
int timeout;
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);
}
/* check for hanging events */
udev_list_node_foreach(loop, &worker_list) {
struct worker *worker = node_to_worker(loop);
+ usec_t ts;
if (worker->state != WORKER_RUNNING)
continue;
- if ((now_usec() - worker->event_start_usec) > 30 * 1000 * 1000) {
- log_error("worker [%u] %s timeout; kill it\n", 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);
+ ts = now(CLOCK_MONOTONIC);
+
+ if ((ts - worker->event_start_usec) > arg_event_timeout_warn_usec) {
+ if ((ts - worker->event_start_usec) > arg_event_timeout_usec) {
+ log_error("worker [%u] %s timeout; kill it", worker->pid, worker->event->devpath);
+ kill(worker->pid, SIGKILL);
+ worker->state = WORKER_KILLED;
+
+ /* drop reference taken for state 'running' */
+ worker_unref(worker);
+ 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;
+ } else if (!worker->event_warned) {
+ log_warning("worker [%u] %s is taking a long time", worker->pid, worker->event->devpath);
+ worker->event_warned = true;
}
}
}
}
/* check for changed config, every 3 seconds at most */
- if ((now_usec() - 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))
reload = true;
- last_usec = now_usec();
+ last_usec = now(CLOCK_MONOTONIC);
}
/* reload requested, HUP signal received, rules changed, builtin changed */
worker_kill(udev);
rules = udev_rules_unref(rules);
udev_builtin_exit(udev);
- reload = 0;
+ reload = false;
}
/* event has finished */
dev = udev_monitor_receive_device(monitor);
if (dev != NULL) {
- udev_device_set_usec_initialized(dev, now_usec());
+ udev_device_set_usec_initialized(dev, now(CLOCK_MONOTONIC));
if (event_queue_insert(dev) < 0)
udev_device_unref(dev);
}
/* start new events */
if (!udev_list_node_is_empty(&event_list) && !udev_exit && !stop_exec_queue) {
+ udev_builtin_init(udev);
if (rules == NULL)
- rules = udev_rules_new(udev, resolve_names);
+ rules = udev_rules_new(udev, arg_resolve_names);
if (rules != NULL)
event_queue_start(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