udevtest.c

   1 /*
   2  * udevtest.c
   3  *
   4  * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
   5  *
   6  *      This program is free software; you can redistribute it and/or modify it
   7  *      under the terms of the GNU General Public License as published by the
   8  *      Free Software Foundation version 2 of the License.
   9  *
  10  *      This program is distributed in the hope that it will be useful, but
  11  *      WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *      General Public License for more details.
  14  *
  15  *      You should have received a copy of the GNU General Public License along
  16  *      with this program; if not, write to the Free Software Foundation, Inc.,
  17  *      675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  */
  20
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <stdio.h>
  24 #include <errno.h>
  25 #include <ctype.h>
  26 #include <signal.h>
  27 #include <syslog.h>
  28
  29 #include "libsysfs/sysfs/libsysfs.h"
  30 #include "udev.h"
  31 #include "udev_utils.h"
  32 #include "udev_version.h"
  33 #include "udev_rules.h"
  34 #include "logging.h"
  35
  36
  37 #ifdef USE_LOG
  38 void log_message (int priority, const char *format, ...)
  39 {
  40         va_list args;
  41
  42         if (priority > udev_log_priority)
  43                 return;
  44
  45         va_start(args, format);
  46         vprintf(format, args);
  47         va_end(args);
  48         if (format[strlen(format)-1] != '\n')
  49                 printf("\n");
  50 }
  51 #endif
  52
  53 int main(int argc, char *argv[], char *envp[])
  54 {
  55         struct udev_rules rules;
  56         struct sysfs_class_device *class_dev;
  57         char *devpath;
  58         char path[PATH_SIZE];
  59         char temp[PATH_SIZE];
  60         struct udevice udev;
  61         char *subsystem = NULL;
  62
  63         info("version %s", UDEV_VERSION);
  64
  65         /* initialize our configuration */
  66         udev_init_config();
  67         if (udev_log_priority < LOG_INFO)
  68                 udev_log_priority = LOG_INFO;
  69
  70         if (argc != 3) {
  71                 info("Usage: udevtest <devpath> <subsystem>");
  72                 return 1;
  73         }
  74
  75         /* remove sysfs_path if given */
  76         if (strncmp(argv[1], sysfs_path, strlen(sysfs_path)) == 0)
  77                 devpath = &argv[1][strlen(sysfs_path)] ;
  78         else
  79                 if (argv[1][0] != '/') {
  80                         /* prepend '/' if missing */
  81                         snprintf(temp, sizeof(temp), "/%s", argv[1]);
  82                         temp[sizeof(temp)-1] = '\0';
  83                         devpath = temp;
  84                 } else
  85                         devpath = argv[1];
  86
  87         subsystem = argv[2];
  88         setenv("DEVPATH", devpath, 1);
  89         setenv("SUBSYSTEM", subsystem, 1);
  90         setenv("ACTION", "add", 1);
  91         info("looking at device '%s' from subsystem '%s'", devpath, subsystem);
  92
  93         /* initialize the naming deamon */
  94         udev_rules_init(&rules, 0);
  95
  96         /* fill in values and test_run flag*/
  97         udev_init_device(&udev, devpath, subsystem, "add");
  98
  99         /* open the device */
 100         snprintf(path, sizeof(path), "%s%s", sysfs_path, udev.devpath);
 101         path[sizeof(path)-1] = '\0';
 102         class_dev = sysfs_open_class_device_path(path);
 103         if (class_dev == NULL) {
 104                 info("sysfs_open_class_device_path failed");
 105                 return 1;
 106         }
 107         info("opened class_dev->name='%s'", class_dev->name);
 108
 109         if (udev.type == DEV_BLOCK || udev.type == DEV_CLASS)
 110                 udev.devt = get_devt(class_dev);
 111
 112         /* simulate node creation with test flag */
 113         udev.test_run = 1;
 114         if (udev.type == DEV_NET || udev.devt) {
 115                 udev_rules_get_name(&rules, &udev, class_dev);
 116                 udev_add_device(&udev, class_dev);
 117         } else
 118                 info("only char and block devices with a dev-file are supported by this test program");
 119         sysfs_close_class_device(class_dev);
 120
 121         return 0;
 122 }