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 /* global variables */
  38 char **main_argv;
  39 char **main_envp;
  40
  41
  42 #ifdef LOG
  43 unsigned char logname[LOGNAME_SIZE];
  44 void log_message (int level, const char *format, ...)
  45 {
  46         va_list args;
  47
  48         va_start(args, format);
  49         vprintf(format, args);
  50         va_end(args);
  51         if (format[strlen(format)-1] != '\n')
  52                 printf("\n");
  53 }
  54 #endif
  55
  56 int main(int argc, char *argv[], char *envp[])
  57 {
  58         struct sysfs_class_device *class_dev;
  59         char *devpath;
  60         char path[SYSFS_PATH_MAX];
  61         char temp[NAME_SIZE];
  62         char *subsystem = "";
  63         struct udevice udev;
  64
  65         main_argv = argv;
  66         main_envp = envp;
  67
  68         info("version %s", UDEV_VERSION);
  69
  70         if (argv[1] == NULL) {
  71                 info("udevinfo expects the DEVPATH of the sysfs device as a argument");
  72                 goto exit;
  73         }
  74
  75         /* initialize our configuration */
  76         udev_init_config();
  77
  78         /* remove sysfs_path if given */
  79         if (strncmp(argv[1], sysfs_path, strlen(sysfs_path)) == 0)
  80                 devpath = argv[1] + strlen(sysfs_path);
  81         else
  82                 if (argv[1][0] != '/') {
  83                         /* prepend '/' if missing */
  84                         strfieldcpy(temp, "/");
  85                         strfieldcat(temp, argv[1]);
  86                         devpath = temp;
  87                 } else {
  88                         devpath = argv[1];
  89                 }
  90
  91         info("looking at '%s'", devpath);
  92
  93         /* we only care about class devices and block stuff */
  94         if (!strstr(devpath, "class") && !strstr(devpath, "block")) {
  95                 dbg("not a block or class device");
  96                 goto exit;
  97         }
  98
  99         /* initialize the naming deamon */
 100         namedev_init();
 101
 102         if (argv[2] != NULL)
 103                 subsystem = argv[2];
 104
 105         /* fill in values and test_run flag*/
 106         udev_set_values(&udev, devpath, subsystem);
 107         udev.test_run = 1;
 108
 109         /* open the device */
 110         snprintf(path, SYSFS_PATH_MAX, "%s%s", sysfs_path, udev.devpath);
 111         class_dev = sysfs_open_class_device_path(path);
 112         if (class_dev == NULL)
 113                 dbg ("sysfs_open_class_device_path failed");
 114         else
 115                 dbg("opened class_dev->name='%s'", class_dev->name);
 116
 117         /* simulate node creation with fake flag */
 118         udev_add_device(&udev, class_dev);
 119
 120 exit:
 121         return 0;
 122 }