mirror of
https://github.com/systemd/systemd-stable.git
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138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*
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* Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
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* Copyright (C) 2004-2006 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <unistd.h>
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#include <errno.h>
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#include <ctype.h>
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#include <signal.h>
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#include <syslog.h>
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#include "udev.h"
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#include "udev_rules.h"
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#ifdef USE_LOG
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void log_message (int priority, const char *format, ...)
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{
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va_list args;
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if (priority > udev_log_priority)
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return;
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va_start(args, format);
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vprintf(format, args);
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va_end(args);
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if (format[strlen(format)-1] != '\n')
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printf("\n");
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}
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#endif
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int main(int argc, char *argv[], char *envp[])
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{
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struct udev_rules rules = {};
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char *devpath = NULL;
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struct udevice *udev;
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struct sysfs_device *dev;
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int i;
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int retval;
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int rc = 0;
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info("version %s", UDEV_VERSION);
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udev_config_init();
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if (udev_log_priority < LOG_INFO)
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udev_log_priority = LOG_INFO;
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for (i = 1 ; i < argc; i++) {
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char *arg = argv[i];
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if (strcmp(arg, "--help") == 0 || strcmp(arg, "-h") == 0) {
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printf("Usage: udevtest [--help] <devpath>\n");
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goto exit;
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} else
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devpath = arg;
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}
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if (devpath == NULL) {
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fprintf(stderr, "devpath parameter missing\n");
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rc = 1;
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goto exit;
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}
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sysfs_init();
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udev_rules_init(&rules, 0);
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/* remove /sys if given */
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if (strncmp(devpath, sysfs_path, strlen(sysfs_path)) == 0)
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devpath = &devpath[strlen(sysfs_path)];
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dev = sysfs_device_get(devpath);
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if (dev == NULL) {
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fprintf(stderr, "unable to open device '%s'\n", devpath);
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rc = 2;
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goto exit;
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}
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udev = udev_device_init();
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if (udev == NULL) {
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fprintf(stderr, "error initializing device\n");
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rc = 3;
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goto exit;
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}
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/* override built-in sysfs device */
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udev->dev = dev;
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strcpy(udev->action, "add");
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udev->devt = udev_device_get_devt(udev);
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/* simulate node creation with test flag */
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udev->test_run = 1;
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setenv("DEVPATH", udev->dev->devpath, 1);
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setenv("SUBSYSTEM", udev->dev->subsystem, 1);
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setenv("ACTION", "add", 1);
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printf("This program is for debugging only, it does not create any node,\n"
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"or run any program specified by a RUN key. It may show incorrect results,\n"
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"if rules match against subsystem specfic kernel event variables.\n"
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"\n");
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info("looking at device '%s' from subsystem '%s'", udev->dev->devpath, udev->dev->subsystem);
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retval = udev_device_event(&rules, udev);
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if (retval == 0 && !udev->ignore_device && udev_run) {
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struct name_entry *name_loop;
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list_for_each_entry(name_loop, &udev->run_list, node) {
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char program[PATH_SIZE];
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strlcpy(program, name_loop->name, sizeof(program));
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udev_rules_apply_format(udev, program, sizeof(program));
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info("run: '%s'", program);
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}
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}
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exit:
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udev_rules_cleanup(&rules);
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sysfs_cleanup();
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return rc;
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}
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