udevtest.c

   1 /*
   2  * udev.c
   3  *
   4  * Userspace devfs
   5  *
   6  * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
   7  *
   8  *      This program is free software; you can redistribute it and/or modify it
   9  *      under the terms of the GNU General Public License as published by the
  10  *      Free Software Foundation version 2 of the License.
  11  *
  12  *      This program is distributed in the hope that it will be useful, but
  13  *      WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *      General Public License for more details.
  16  *
  17  *      You should have received a copy of the GNU General Public License along
  18  *      with this program; if not, write to the Free Software Foundation, Inc.,
  19  *      675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <stdio.h>
  26 #include <errno.h>
  27 #include <ctype.h>
  28 #include <signal.h>
  29
  30 #include "libsysfs/sysfs/libsysfs.h"
  31 #include "udev.h"
  32 #include "udev_lib.h"
  33 #include "udev_version.h"
  34 #include "logging.h"
  35 #include "namedev.h"
  36
  37
  38 #ifdef LOG
  39 unsigned char logname[LOGNAME_SIZE];
  40 void log_message (int level, const char *format, ...)
  41 {
  42         va_list args;
  43
  44         va_start(args, format);
  45         vprintf(format, args);
  46         va_end(args);
  47         if (format[strlen(format)-1] != '\n')
  48                 printf("\n");
  49 }
  50 #endif
  51
  52 int main(int argc, char *argv[], char *envp[])
  53 {
  54         struct sysfs_class_device *class_dev;
  55         char *devpath;
  56         char path[SYSFS_PATH_MAX];
  57         char temp[NAME_SIZE];
  58         char *subsystem = "";
  59         struct udevice udev;
  60
  61         info("version %s", UDEV_VERSION);
  62
  63         if (argv[1] == NULL) {
  64                 info("udevinfo expects the DEVPATH of the sysfs device as a argument");
  65                 return 1;
  66         }
  67
  68         /* remove sysfs_path if given */
  69         if (strncmp(argv[1], sysfs_path, strlen(sysfs_path)) == 0)
  70                 devpath = argv[1] + strlen(sysfs_path);
  71         else
  72                 if (argv[1][0] != '/') {
  73                         /* prepend '/' if missing */
  74                         strfieldcpy(temp, "/");
  75                         strfieldcat(temp, argv[1]);
  76                         devpath = temp;
  77                 } else {
  78                         devpath = argv[1];
  79                 }
  80
  81         info("looking at '%s'", devpath);
  82
  83         /* we only care about class devices and block stuff */
  84         if (!strstr(devpath, "class") && !strstr(devpath, "block")) {
  85                 dbg("not a block or class device");
  86                 return 2;
  87         }
  88
  89         /* initialize our configuration */
  90         udev_init_config();
  91
  92         /* initialize the naming deamon */
  93         namedev_init();
  94
  95         if (argv[2] != NULL)
  96                 subsystem = argv[2];
  97
  98         /* fill in values and test_run flag*/
  99         udev_set_values(&udev, devpath, subsystem, "add");
 100
 101         /* open the device */
 102         snprintf(path, SYSFS_PATH_MAX, "%s%s", sysfs_path, udev.devpath);
 103         class_dev = sysfs_open_class_device_path(path);
 104         if (class_dev == NULL) {
 105                 info("sysfs_open_class_device_path failed");
 106                 return 1;
 107         }
 108
 109         dbg("opened class_dev->name='%s'", class_dev->name);
 110
 111         /* simulate node creation with test flag */
 112         udev.test_run = 1;
 113         udev_add_device(&udev, class_dev);
 114
 115         sysfs_close_class_device(class_dev);
 116
 117         return 0;
 118 }