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https://github.com/systemd/systemd-stable.git
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120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/*
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* udev.c
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*
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* Userspace devfs
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*
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* Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
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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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* 675 Mass Ave, Cambridge, MA 02139, 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 <errno.h>
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#include <ctype.h>
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#include <signal.h>
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#include "libsysfs/sysfs/libsysfs.h"
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#include "udev.h"
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#include "udev_sysfs.h"
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#include "udev_utils.h"
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#include "udev_version.h"
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#include "namedev.h"
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#include "logging.h"
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#ifdef LOG
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void log_message (int level, const char *format, ...)
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{
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va_list args;
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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 sysfs_class_device *class_dev;
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char *devpath;
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char path[SYSFS_PATH_MAX];
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char temp[NAME_SIZE];
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struct udevice udev;
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char *subsystem = NULL;
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info("version %s", UDEV_VERSION);
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if (argc < 2 || argc > 3) {
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info("Usage: udevtest <devpath> [subsystem]");
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return 1;
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}
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/* initialize our configuration */
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udev_init_config();
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/* remove sysfs_path if given */
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if (strncmp(argv[1], sysfs_path, strlen(sysfs_path)) == 0) {
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devpath = &argv[1][strlen(sysfs_path)] ;
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}
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else
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if (argv[1][0] != '/') {
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/* prepend '/' if missing */
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strfieldcpy(temp, "/");
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strfieldcat(temp, argv[1]);
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devpath = temp;
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} else {
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devpath = argv[1];
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}
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info("looking at '%s'", devpath);
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/* initialize the naming deamon */
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namedev_init();
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if (argc == 3)
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subsystem = argv[2];
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/* fill in values and test_run flag*/
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udev_init_device(&udev, devpath, subsystem);
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/* skip subsystems without "dev", but handle net devices */
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if (udev.type != NET && subsystem_expect_no_dev(udev.subsystem)) {
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info("don't care about '%s' devices", udev.subsystem);
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return 2;
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}
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/* open the device */
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snprintf(path, SYSFS_PATH_MAX, "%s%s", sysfs_path, udev.devpath);
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class_dev = sysfs_open_class_device_path(path);
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if (class_dev == NULL) {
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info("sysfs_open_class_device_path failed");
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return 1;
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}
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info("opened class_dev->name='%s'", class_dev->name);
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/* simulate node creation with test flag */
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udev.test_run = 1;
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udev_add_device(&udev, class_dev);
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sysfs_close_class_device(class_dev);
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return 0;
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}
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