mirror of
https://github.com/systemd/systemd-stable.git
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97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* Copyright (C) 2006-2008 Kay Sievers <kay@vrfy.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <stddef.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <syslog.h>
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#include <getopt.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "udev.h"
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#define DEFAULT_TIMEOUT 180
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#define LOOP_PER_SECOND 20
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int udevadm_settle(struct udev *udev, int argc, char *argv[])
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{
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static const struct option options[] = {
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{ "timeout", required_argument, NULL, 't' },
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{ "help", no_argument, NULL, 'h' },
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{}
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};
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int timeout = DEFAULT_TIMEOUT;
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struct udev_queue *udev_queue;
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int loop;
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int rc = 0;
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dbg(udev, "version %s\n", VERSION);
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while (1) {
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int option;
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int seconds;
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option = getopt_long(argc, argv, "t:h", options, NULL);
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if (option == -1)
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break;
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switch (option) {
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case 't':
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seconds = atoi(optarg);
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if (seconds > 0)
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timeout = seconds;
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else
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fprintf(stderr, "invalid timeout value\n");
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dbg(udev, "timeout=%i\n", timeout);
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break;
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case 'h':
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printf("Usage: udevadm settle [--help] [--timeout=<seconds>]\n\n");
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goto exit;
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}
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}
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udev_queue = udev_queue_new(udev);
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if (udev_queue == NULL)
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goto exit;
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loop = timeout * LOOP_PER_SECOND;
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while (loop--) {
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if (udev_queue_get_queue_is_empty(udev_queue))
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break;
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usleep(1000 * 1000 / LOOP_PER_SECOND);
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}
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if (loop <= 0) {
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struct udev_list_entry *list_entry;
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info(udev, "timeout waiting for udev queue\n");
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printf("\ndevadm settle timeout of %i seconds reached, the event queue contains:\n", timeout);
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udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
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printf(" '%s' [%s]\n",
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udev_list_entry_get_name(list_entry),
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udev_list_entry_get_value(list_entry));
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rc = 1;
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}
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exit:
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udev_queue_unref(udev_queue);
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return rc;
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}
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