tests/modules/k_helper3/k_helper3.c

   1 /*      $NetBSD: k_helper3.c,v 1.3 2012/04/17 21:39:19 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2012 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jukka Ruohonen.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: k_helper3.c,v 1.3 2012/04/17 21:39:19 martin Exp $");
  33
  34 #include <sys/module.h>
  35
  36 #include <assert.h>
  37 #include <errno.h>
  38 #include <stdarg.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42
  43 #include <prop/proplib.h>
  44
  45 static int load(const char *, ...);
  46
  47 /*
  48  * A program that loads a module and returns the errno(2) from modctl(8).
  49  */
  50 int
  51 main(int argc, char *argv[])
  52 {
  53         assert(argc == 3);
  54
  55         return load(argv[1], argv[2]);
  56 }
  57
  58 static __printflike(1, 2) int
  59 load(const char *fmt, ...)
  60 {
  61         char filename[MAXPATHLEN], *propsstr, *shortname, *dot;
  62         prop_dictionary_t props;
  63         modctl_load_t ml;
  64         int serrno, rv;
  65         va_list ap;
  66
  67         props = prop_dictionary_create();
  68         propsstr = prop_dictionary_externalize(props);
  69         assert(propsstr != NULL);
  70         prop_object_release(props);
  71
  72         va_start(ap, fmt);
  73         (void)vsnprintf(filename, sizeof(filename), fmt, ap);
  74         va_end(ap);
  75
  76         ml.ml_filename = filename;
  77         ml.ml_flags = 0;
  78         ml.ml_props = propsstr;
  79         ml.ml_propslen = strlen(propsstr);
  80
  81         printf("Loading module %s\n", filename);
  82         errno = serrno = 0;
  83
  84         rv = modctl(MODCTL_LOAD, &ml);
  85
  86         if (rv != 0)
  87                 serrno = errno;
  88
  89         shortname = strrchr(filename, '/');
  90         if (shortname != NULL)
  91                 shortname++;
  92         else
  93                 shortname = filename;
  94         dot = strrchr(shortname, '.');
  95         if (dot)
  96                 *dot = 0;
  97         (void)modctl(MODCTL_UNLOAD, shortname);
  98
  99         free(propsstr);
 100
 101         return serrno;
 102 }