X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fudev%2Fudevd.c;h=8bec03e77f0e0874e2396a3f02bb15d178dd2f1b;hb=7517e17443225fafea86b21e42a36af69feb1dbc;hp=3c3de76f3438996c62c4614bec2642f6d5c21009;hpb=adeba5008eac3105ae59256dedd087ebe006a9e6;p=elogind.git diff --git a/src/udev/udevd.c b/src/udev/udevd.c index 3c3de76f3..8bec03e77 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -220,14 +220,14 @@ 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 +243,7 @@ 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 +293,7 @@ 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; @@ -315,8 +315,9 @@ static void worker_new(struct event *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) { @@ -358,7 +359,7 @@ skip: if (fdcount < 0) { if (errno == EINTR) continue; - log_error("failed to poll: %m"); + log_error_errno(errno, "failed to poll: %m"); goto out; } @@ -398,7 +399,7 @@ 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 */ @@ -429,7 +430,7 @@ 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 [%u] did not accept message %zi (%m), kill it", worker->pid, count); kill(worker->pid, SIGKILL); worker->state = WORKER_KILLED; continue; @@ -815,41 +816,34 @@ 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; + uint8_t buffer[INOTIFY_EVENT_MAX] _alignas_(struct inotify_event); + 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; } @@ -962,7 +956,7 @@ 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; } @@ -1135,14 +1129,14 @@ 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; } @@ -1152,7 +1146,7 @@ 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; } @@ -1211,6 +1205,8 @@ 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) { @@ -1225,9 +1221,7 @@ 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); @@ -1239,7 +1233,7 @@ 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; @@ -1249,7 +1243,7 @@ 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: @@ -1312,7 +1306,7 @@ 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 || @@ -1320,7 +1314,7 @@ 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; }