126 lines
2.9 KiB
C
126 lines
2.9 KiB
C
/*
|
|
* udev.c
|
|
*
|
|
* Userspace devfs
|
|
*
|
|
* Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation version 2 of the License.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
#include <signal.h>
|
|
|
|
#include "libsysfs/sysfs/libsysfs.h"
|
|
#include "udev.h"
|
|
#include "udev_lib.h"
|
|
#include "udev_version.h"
|
|
#include "logging.h"
|
|
#include "namedev.h"
|
|
|
|
/* global variables */
|
|
char **main_argv;
|
|
char **main_envp;
|
|
|
|
|
|
#ifdef LOG
|
|
unsigned char logname[LOGNAME_SIZE];
|
|
void log_message (int level, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
|
|
va_start(args, format);
|
|
vprintf(format, args);
|
|
va_end(args);
|
|
if (format[strlen(format)-1] != '\n')
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
int main(int argc, char *argv[], char *envp[])
|
|
{
|
|
struct sysfs_class_device *class_dev;
|
|
char *devpath;
|
|
char path[SYSFS_PATH_MAX];
|
|
char temp[NAME_SIZE];
|
|
char *subsystem = "";
|
|
struct udevice udev;
|
|
|
|
main_argv = argv;
|
|
main_envp = envp;
|
|
|
|
info("version %s", UDEV_VERSION);
|
|
|
|
if (argv[1] == NULL) {
|
|
info("udevinfo expects the DEVPATH of the sysfs device as a argument");
|
|
return 1;
|
|
}
|
|
|
|
/* remove sysfs_path if given */
|
|
if (strncmp(argv[1], sysfs_path, strlen(sysfs_path)) == 0)
|
|
devpath = argv[1] + strlen(sysfs_path);
|
|
else
|
|
if (argv[1][0] != '/') {
|
|
/* prepend '/' if missing */
|
|
strfieldcpy(temp, "/");
|
|
strfieldcat(temp, argv[1]);
|
|
devpath = temp;
|
|
} else {
|
|
devpath = argv[1];
|
|
}
|
|
|
|
info("looking at '%s'", devpath);
|
|
|
|
/* we only care about class devices and block stuff */
|
|
if (!strstr(devpath, "class") && !strstr(devpath, "block")) {
|
|
dbg("not a block or class device");
|
|
return 2;
|
|
}
|
|
|
|
/* initialize our configuration */
|
|
udev_init_config();
|
|
|
|
/* initialize the naming deamon */
|
|
namedev_init();
|
|
|
|
if (argv[2] != NULL)
|
|
subsystem = argv[2];
|
|
|
|
/* fill in values and test_run flag*/
|
|
udev_set_values(&udev, devpath, subsystem);
|
|
|
|
/* open the device */
|
|
snprintf(path, SYSFS_PATH_MAX, "%s%s", sysfs_path, udev.devpath);
|
|
class_dev = sysfs_open_class_device_path(path);
|
|
if (class_dev == NULL) {
|
|
info("sysfs_open_class_device_path failed");
|
|
return 1;
|
|
}
|
|
|
|
dbg("opened class_dev->name='%s'", class_dev->name);
|
|
|
|
/* simulate node creation with test flag */
|
|
udev.test_run = 1;
|
|
udev_add_device(&udev, class_dev);
|
|
|
|
sysfs_close_class_device(class_dev);
|
|
|
|
return 0;
|
|
}
|