X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fudev%2Fudevd.c;h=009e2fed754992c622a6fb3d9bdf38569b34f406;hb=a38d99451f2bf8026ec51aee91662292e823c6a8;hp=6335b6c75af4ffd0ed569f96a033ca5f54ae5b03;hpb=41b848b0ea674dba135d5d5f82b87d126d967fcf;p=elogind.git diff --git a/src/udev/udevd.c b/src/udev/udevd.c index 6335b6c75..009e2fed7 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -46,13 +46,14 @@ #include #include -#include "udev.h" -#include "udev-util.h" -#include "rtnl-util.h" #include "sd-daemon.h" +#include "rtnl-util.h" #include "cgroup-util.h" #include "dev-setup.h" #include "fileio.h" +#include "selinux-util.h" +#include "udev.h" +#include "udev-util.h" static struct udev_rules *rules; static struct udev_ctrl *udev_ctrl; @@ -75,8 +76,8 @@ static sigset_t sigmask_orig; static UDEV_LIST(event_list); static UDEV_LIST(worker_list); static char *udev_cgroup; -static bool udev_exit; static struct udev_list properties_list; +static bool udev_exit; enum event_state { EVENT_UNDEF, @@ -157,7 +158,7 @@ static void worker_unref(struct worker *worker) { worker->refcount--; if (worker->refcount > 0) return; - log_debug("worker [%u] cleaned up", worker->pid); + log_debug("worker ["PID_FMT"] cleaned up", worker->pid); worker_cleanup(worker); } @@ -220,14 +221,14 @@ static void worker_new(struct event *event) { sigfillset(&mask); fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); if (fd_signal < 0) { - log_error("error creating signalfd %m"); + log_error_errno(errno, "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"); + log_error_errno(errno, "error creating epoll fd: %m"); rc = 3; goto out; } @@ -243,7 +244,7 @@ static void worker_new(struct event *event) { 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"); + log_error_errno(errno, "fail to add fds to epoll: %m"); rc = 4; goto out; } @@ -293,7 +294,7 @@ static void worker_new(struct event *event) { 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)); + log_debug_errno(errno, "Unable to flock(%s), skipping event handling: %m", udev_device_get_devnode(d)); err = -EWOULDBLOCK; fd_lock = safe_close(fd_lock); goto skip; @@ -305,12 +306,19 @@ static void worker_new(struct event *event) { udev_event->rtnl = rtnl; /* apply rules, create node, symlinks */ - udev_event_execute_rules(udev_event, arg_event_timeout_usec, arg_event_timeout_warn_usec, rules, &sigmask_orig); + udev_event_execute_rules(udev_event, + arg_event_timeout_usec, arg_event_timeout_warn_usec, + &properties_list, + rules, + &sigmask_orig); - udev_event_execute_run(udev_event, arg_event_timeout_usec, arg_event_timeout_warn_usec, &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); + if (udev_event->rtnl) + /* in case rtnl was initialized */ + rtnl = sd_rtnl_ref(udev_event->rtnl); /* apply/restore inotify watch */ if (udev_event->inotify_watch) { @@ -352,7 +360,7 @@ skip: if (fdcount < 0) { if (errno == EINTR) continue; - log_error("failed to poll: %m"); + log_error_errno(errno, "failed to poll: %m"); goto out; } @@ -392,7 +400,7 @@ out: udev_monitor_unref(worker_monitor); event->state = EVENT_QUEUED; free(worker); - log_error("fork of child failed: %m"); + log_error_errno(errno, "fork of child failed: %m"); break; default: /* close monitor, but keep address around */ @@ -406,7 +414,7 @@ out: event->state = EVENT_RUNNING; udev_list_node_append(&worker->node, &worker_list); children++; - log_debug("seq %llu forked new worker [%u]", udev_device_get_seqnum(event->dev), pid); + log_debug("seq %llu forked new worker ["PID_FMT"]", udev_device_get_seqnum(event->dev), pid); break; } } @@ -423,7 +431,8 @@ static void event_run(struct event *event) { 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", worker->pid, count); + log_error_errno(errno, "worker ["PID_FMT"] did not accept message %zi (%m), kill it", + worker->pid, count); kill(worker->pid, SIGKILL); worker->state = WORKER_KILLED; continue; @@ -809,41 +818,34 @@ static int synthesize_change(struct udev_device *dev) { } static int handle_inotify(struct udev *udev) { - int nbytes, pos; - char *buf; - struct inotify_event *ev; - int r; + union inotify_event_buffer buffer; + struct inotify_event *e; + ssize_t l; - r = ioctl(fd_inotify, FIONREAD, &nbytes); - if (r < 0 || nbytes <= 0) - return -errno; + l = read(fd_inotify, &buffer, sizeof(buffer)); + if (l < 0) { + if (errno == EAGAIN || errno == EINTR) + return 0; - buf = malloc(nbytes); - if (!buf) { - log_error("error getting buffer for inotify"); - return -ENOMEM; + return log_error_errno(errno, "Failed to read inotify fd: %m"); } - nbytes = read(fd_inotify, buf, nbytes); - - for (pos = 0; pos < nbytes; pos += sizeof(struct inotify_event) + ev->len) { + FOREACH_INOTIFY_EVENT(e, buffer, l) { struct udev_device *dev; - ev = (struct inotify_event *)(buf + pos); - dev = udev_watch_lookup(udev, ev->wd); + dev = udev_watch_lookup(udev, e->wd); if (!dev) continue; - log_debug("inotify event: %x for %s", ev->mask, udev_device_get_devnode(dev)); - if (ev->mask & IN_CLOSE_WRITE) + log_debug("inotify event: %x for %s", e->mask, udev_device_get_devnode(dev)); + if (e->mask & IN_CLOSE_WRITE) synthesize_change(dev); - else if (ev->mask & IN_IGNORED) + else if (e->mask & IN_IGNORED) udev_watch_end(udev, dev); udev_device_unref(dev); } - free(buf); return 0; } @@ -868,26 +870,26 @@ static void handle_signal(struct udev *udev, int signo) { if (worker->pid != pid) continue; - log_debug("worker [%u] exit", pid); + log_debug("worker ["PID_FMT"] exit", pid); if (WIFEXITED(status)) { if (WEXITSTATUS(status) != 0) - log_error("worker [%u] exit with return code %i", + log_error("worker ["PID_FMT"] exit with return code %i", pid, WEXITSTATUS(status)); } else if (WIFSIGNALED(status)) { - log_error("worker [%u] terminated by signal %i (%s)", + log_error("worker ["PID_FMT"] terminated by signal %i (%s)", pid, WTERMSIG(status), strsignal(WTERMSIG(status))); } else if (WIFSTOPPED(status)) { - log_error("worker [%u] stopped", pid); + log_error("worker ["PID_FMT"] stopped", pid); } else if (WIFCONTINUED(status)) { - log_error("worker [%u] continued", pid); + log_error("worker ["PID_FMT"] continued", pid); } else { - log_error("worker [%u] exit with status 0x%04x", pid, status); + log_error("worker ["PID_FMT"] exit with status 0x%04x", pid, status); } if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { if (worker->event) { - log_error("worker [%u] failed while handling '%s'", + log_error("worker ["PID_FMT"] failed while handling '%s'", pid, worker->event->devpath); worker->event->exitcode = -32; event_queue_delete(worker->event); @@ -956,7 +958,7 @@ static void kernel_cmdline_options(struct udev *udev) { r = proc_cmdline(&line); if (r < 0) { - log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); + log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m"); return; } @@ -1003,14 +1005,15 @@ static void kernel_cmdline_options(struct udev *udev) { static void help(void) { printf("%s [OPTIONS...]\n\n" "Manages devices.\n\n" - " --daemon\n" - " --debug\n" - " --children-max=\n" - " --exec-delay=\n" - " --event-timeout=\n" - " --resolve-names=early|late|never\n" - " --version\n" - " --help\n" + " -h --help Print this message\n" + " --version Print version of the program\n" + " --daemon Detach and run in the background\n" + " --debug Enable debug output\n" + " --children-max=INT Set maximum number of workers\n" + " --exec-delay=SECONDS Seconds to wait before executing RUN=\n" + " --event-timeout=SECONDS Seconds to wait before terminating an event\n" + " --resolve-names=early|late|never\n" + " When to resolve users and groups\n" , program_invocation_short_name); } @@ -1129,14 +1132,14 @@ int main(int argc, char *argv[]) { r = mac_selinux_init("/dev"); if (r < 0) { - log_error("could not initialize labelling: %s", strerror(-r)); + log_error_errno(r, "could not initialize labelling: %m"); goto exit; } /* set umask before creating any file/directory */ r = chdir("/"); if (r < 0) { - log_error("could not change dir to /: %m"); + log_error_errno(errno, "could not change dir to /: %m"); goto exit; } @@ -1146,7 +1149,7 @@ int main(int argc, char *argv[]) { r = mkdir("/run/udev", 0755); if (r < 0 && errno != EEXIST) { - log_error("could not create /run/udev: %m"); + log_error_errno(errno, "could not create /run/udev: %m"); goto exit; } @@ -1205,6 +1208,8 @@ int main(int argc, char *argv[]) { goto exit; } fd_netlink = udev_monitor_get_fd(monitor); + + udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024); } if (udev_monitor_enable_receiving(monitor) < 0) { @@ -1219,9 +1224,7 @@ int main(int argc, char *argv[]) { goto exit; } - udev_monitor_set_receive_buffer_size(monitor, 128 * 1024 * 1024); - - log_info("starting version " VERSION "\n"); + log_info("starting version " VERSION); udev_builtin_init(udev); @@ -1233,7 +1236,7 @@ int main(int argc, char *argv[]) { rc = udev_rules_apply_static_dev_perms(rules); if (rc < 0) - log_error("failed to apply permissions on static device nodes - %s", strerror(-rc)); + log_error_errno(rc, "failed to apply permissions on static device nodes - %m"); if (arg_daemonize) { pid_t pid; @@ -1243,7 +1246,7 @@ int main(int argc, char *argv[]) { case 0: break; case -1: - log_error("fork of daemon failed: %m"); + log_error_errno(errno, "fork of daemon failed: %m"); rc = 4; goto exit; default: @@ -1306,7 +1309,7 @@ int main(int argc, char *argv[]) { fd_ep = epoll_create1(EPOLL_CLOEXEC); if (fd_ep < 0) { - log_error("error creating epoll fd: %m"); + log_error_errno(errno, "error creating epoll fd: %m"); goto exit; } if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_ctrl, &ep_ctrl) < 0 || @@ -1314,7 +1317,7 @@ int main(int argc, char *argv[]) { 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"); + log_error_errno(errno, "fail to add fds to epoll: %m"); goto exit; } @@ -1407,7 +1410,7 @@ int main(int argc, char *argv[]) { 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); + log_error("worker ["PID_FMT"] %s timeout; kill it", worker->pid, worker->event->devpath); kill(worker->pid, SIGKILL); worker->state = WORKER_KILLED; @@ -1418,7 +1421,7 @@ int main(int argc, char *argv[]) { 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); + log_warning("worker ["PID_FMT"] %s is taking a long time", worker->pid, worker->event->devpath); worker->event_warned = true; } }