int main(int argc, char *argv[]) { _cleanup_udev_unref_ struct udev *udev = NULL; _cleanup_udev_event_unref_ struct udev_event *event = NULL; _cleanup_udev_device_unref_ struct udev_device *dev = NULL; _cleanup_udev_rules_unref_ struct udev_rules *rules = NULL; char syspath[UTIL_PATH_SIZE]; const char *devpath; const char *action; sigset_t mask, sigmask_orig; int err; err = fake_filesystems(); if (err < 0) return EXIT_FAILURE; udev = udev_new(); if (udev == NULL) return EXIT_FAILURE; log_debug("version %s", VERSION); mac_selinux_init("/dev"); sigprocmask(SIG_SETMASK, NULL, &sigmask_orig); action = argv[1]; if (action == NULL) { log_error("action missing"); goto out; } devpath = argv[2]; if (devpath == NULL) { log_error("devpath missing"); goto out; } rules = udev_rules_new(udev, 1); strscpyl(syspath, sizeof(syspath), "/sys", devpath, NULL); dev = udev_device_new_from_synthetic_event(udev, syspath, action); if (dev == NULL) { log_debug("unknown device '%s'", devpath); goto out; } event = udev_event_new(dev); sigfillset(&mask); sigprocmask(SIG_SETMASK, &mask, &sigmask_orig); event->fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); if (event->fd_signal < 0) { fprintf(stderr, "error creating signalfd\n"); goto out; } /* do what devtmpfs usually provides us */ if (udev_device_get_devnode(dev) != NULL) { mode_t mode = 0600; if (streq(udev_device_get_subsystem(dev), "block")) mode |= S_IFBLK; else mode |= S_IFCHR; if (!streq(action, "remove")) { mkdir_parents_label(udev_device_get_devnode(dev), 0755); mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev)); } else { unlink(udev_device_get_devnode(dev)); rmdir_parents(udev_device_get_devnode(dev), "/"); } } udev_event_execute_rules(event, 3 * USEC_PER_SEC, USEC_PER_SEC, NULL, rules, &sigmask_orig); udev_event_execute_run(event, 3 * USEC_PER_SEC, USEC_PER_SEC, NULL); out: if (event != NULL && event->fd_signal >= 0) close(event->fd_signal); mac_selinux_finish(); return err ? EXIT_FAILURE : EXIT_SUCCESS; }
int main(int argc, char *argv[]) { _cleanup_udev_unref_ struct udev *udev = NULL; _cleanup_udev_event_unref_ struct udev_event *event = NULL; _cleanup_udev_device_unref_ struct udev_device *dev = NULL; _cleanup_udev_rules_unref_ struct udev_rules *rules = NULL; char syspath[UTIL_PATH_SIZE]; const char *devpath; const char *action; int err; err = fake_filesystems(); if (err < 0) return EXIT_FAILURE; udev = udev_new(); if (udev == NULL) return EXIT_FAILURE; log_debug("version %s", VERSION); mac_selinux_init("/dev"); action = argv[1]; if (action == NULL) { log_error("action missing"); goto out; } devpath = argv[2]; if (devpath == NULL) { log_error("devpath missing"); goto out; } rules = udev_rules_new(udev, 1); strscpyl(syspath, sizeof(syspath), "/sys", devpath, NULL); dev = udev_device_new_from_synthetic_event(udev, syspath, action); if (dev == NULL) { log_debug("unknown device '%s'", devpath); goto out; } event = udev_event_new(dev); assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) >= 0); /* do what devtmpfs usually provides us */ if (udev_device_get_devnode(dev) != NULL) { mode_t mode = 0600; if (streq(udev_device_get_subsystem(dev), "block")) mode |= S_IFBLK; else mode |= S_IFCHR; if (!streq(action, "remove")) { mkdir_parents_label(udev_device_get_devnode(dev), 0755); mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev)); } else { unlink(udev_device_get_devnode(dev)); rmdir_parents(udev_device_get_devnode(dev), "/"); } } udev_event_execute_rules(event, 3 * USEC_PER_SEC, USEC_PER_SEC, NULL, rules); udev_event_execute_run(event, 3 * USEC_PER_SEC, USEC_PER_SEC); out: mac_selinux_finish(); return err ? EXIT_FAILURE : EXIT_SUCCESS; }