sbin/modload/main.c

   1 /*      $NetBSD: main.c,v 1.12 2009/06/10 03:30:32 jnemeth Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 #ifndef lint
  31 __RCSID("$NetBSD: main.c,v 1.12 2009/06/10 03:30:32 jnemeth Exp $");
  32 #endif /* !lint */
  33
  34 #include <sys/module.h>
  35 #include <sys/queue.h>
  36
  37 #include <assert.h>
  38 #include <stdbool.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <unistd.h>
  43 #include <err.h>
  44
  45 #include <prop/proplib.h>
  46
  47 int             main(int, char **);
  48 static void     parse_bool_param(prop_dictionary_t, const char *,
  49                                  const char *);
  50 static void     parse_int_param(prop_dictionary_t, const char *,
  51                                 const char *);
  52 static void     parse_param(prop_dictionary_t, const char *,
  53                             void (*)(prop_dictionary_t, const char *,
  54                             const char *));
  55 static void     parse_string_param(prop_dictionary_t, const char *,
  56                                    const char *);
  57 static void     usage(void) __dead;
  58 static void     merge_dicts(prop_dictionary_t, const prop_dictionary_t);
  59
  60 int
  61 main(int argc, char **argv)
  62 {
  63         SIMPLEQ_HEAD(del_head, del_item) del_head;
  64         modctl_load_t cmdargs;
  65         prop_dictionary_t ext_props, props;
  66         bool del_props, merge_props, output_props;
  67         const char *ext_file;
  68         char *propsstr;
  69         int ch;
  70         int flags;
  71
  72         struct del_item {
  73                 SIMPLEQ_ENTRY(del_item) del_items;
  74                 const char *del_key;
  75         } *delp;
  76
  77         SIMPLEQ_INIT(&del_head);
  78         ext_file = NULL;
  79         ext_props = NULL;
  80         props = prop_dictionary_create();
  81         del_props = merge_props = output_props = false;
  82         flags = 0;
  83
  84         while ((ch = getopt(argc, argv, "Pb:d:fi:m:ps:")) != -1) {
  85                 switch (ch) {
  86                 case 'P':
  87                         flags |= MODCTL_NO_PROP;
  88                         break;
  89                 case 'b':
  90                         parse_param(props, optarg, parse_bool_param);
  91                         break;
  92
  93                 case 'd':
  94                         del_props = true;
  95                         delp = malloc(sizeof(struct del_item));
  96                         if (delp == NULL)
  97                                 errx(EXIT_FAILURE, "Out of memory");
  98                         delp->del_key = optarg;
  99                         SIMPLEQ_INSERT_TAIL(&del_head, delp, del_items);
 100                         break;
 101
 102                 case 'f':
 103                         flags |= MODCTL_LOAD_FORCE;
 104                         break;
 105
 106                 case 'i':
 107                         parse_param(props, optarg, parse_int_param);
 108                         break;
 109
 110                 case 'm':
 111                         merge_props = true;
 112                         ext_file = optarg;
 113                         break;
 114
 115                 case 'p':
 116                         output_props = true;
 117                         break;
 118
 119                 case 's':
 120                         parse_param(props, optarg, parse_string_param);
 121                         break;
 122
 123                 default:
 124                         usage();
 125                         /* NOTREACHED */
 126                 }
 127         }
 128
 129         argc -= optind;
 130         argv += optind;
 131
 132         propsstr = prop_dictionary_externalize(props);
 133         if (propsstr == NULL)
 134                 errx(EXIT_FAILURE, "Failed to process properties");
 135
 136         if (output_props) {
 137                 if (merge_props) {
 138                         ext_props =
 139                             prop_dictionary_internalize_from_file(ext_file);
 140                         if (ext_props == NULL) {
 141                                 errx(EXIT_FAILURE, "Failed to read existing "
 142                                     "property list");
 143                         }
 144
 145                         free(propsstr);
 146                         merge_dicts(ext_props, props);
 147
 148                         if (del_props)
 149                                 SIMPLEQ_FOREACH(delp, &del_head, del_items)
 150                                         prop_dictionary_remove(ext_props,
 151                                             delp->del_key);
 152
 153                         propsstr = prop_dictionary_externalize(ext_props);
 154                         if (propsstr == NULL)
 155                                 errx(EXIT_FAILURE, "Failed to process "
 156                                     "properties");
 157                 }
 158
 159                 fputs(propsstr, stdout);
 160         } else {
 161                 if (argc != 1)
 162                         usage();
 163                 cmdargs.ml_filename = argv[0];
 164                 cmdargs.ml_flags = flags;
 165                 cmdargs.ml_props = propsstr;
 166                 cmdargs.ml_propslen = strlen(propsstr);
 167
 168                 if (modctl(MODCTL_LOAD, &cmdargs)) {
 169                         err(EXIT_FAILURE, NULL);
 170                 }
 171         }
 172
 173         free(propsstr);
 174         prop_object_release(props);
 175
 176         exit(EXIT_SUCCESS);
 177 }
 178
 179 static void
 180 parse_bool_param(prop_dictionary_t props, const char *name,
 181                  const char *value)
 182 {
 183         bool boolvalue;
 184
 185         assert(name != NULL);
 186         assert(value != NULL);
 187
 188         if (strcasecmp(value, "1") == 0 ||
 189             strcasecmp(value, "true") == 0 ||
 190             strcasecmp(value, "yes") == 0)
 191                 boolvalue = true;
 192         else if (strcasecmp(value, "0") == 0 ||
 193             strcasecmp(value, "false") == 0 ||
 194             strcasecmp(value, "no") == 0)
 195                 boolvalue = false;
 196         else
 197                 errx(EXIT_FAILURE, "Invalid boolean value `%s'", value);
 198
 199         prop_dictionary_set(props, name, prop_bool_create(boolvalue));
 200 }
 201
 202 static void
 203 parse_int_param(prop_dictionary_t props, const char *name,
 204                 const char *value)
 205 {
 206         int64_t intvalue;
 207
 208         assert(name != NULL);
 209         assert(value != NULL);
 210
 211         if (dehumanize_number(value, &intvalue) != 0)
 212                 err(EXIT_FAILURE, "Invalid integer value `%s'", value);
 213
 214         prop_dictionary_set(props, name,
 215             prop_number_create_integer(intvalue));
 216 }
 217
 218 static void
 219 parse_param(prop_dictionary_t props, const char *origstr,
 220             void (*fmt_handler)(prop_dictionary_t, const char *, const char *))
 221 {
 222         char *name, *value;
 223
 224         name = strdup(origstr);
 225
 226         value = strchr(name, '=');
 227         if (value == NULL) {
 228                 free(name);
 229                 errx(EXIT_FAILURE, "Invalid parameter `%s'", origstr);
 230         }
 231         *value++ = '\0';
 232
 233         fmt_handler(props, name, value);
 234
 235         free(name);
 236 }
 237
 238 static void
 239 parse_string_param(prop_dictionary_t props, const char *name,
 240                    const char *value)
 241 {
 242
 243         assert(name != NULL);
 244         assert(value != NULL);
 245
 246         prop_dictionary_set(props, name, prop_string_create_cstring(value));
 247 }
 248
 249 static void
 250 usage(void)
 251 {
 252
 253         (void)fprintf(stderr,
 254             "Usage: %s [-fP] [-b var=boolean] [-i var=integer] "
 255             "[-s var=string] module\n"
 256             "       %s -p [-b var=boolean] [-d var] [-i var=integer] "
 257             "[-m plist]\n               [-s var=string]\n",
 258             getprogname(), getprogname());
 259         exit(EXIT_FAILURE);
 260 }
 261
 262 static void
 263 merge_dicts(prop_dictionary_t existing_dict, const prop_dictionary_t new_dict)
 264 {
 265         prop_dictionary_keysym_t props_keysym;
 266         prop_object_iterator_t props_iter;
 267         prop_object_t props_obj;
 268         const char *props_key;
 269
 270         props_iter = prop_dictionary_iterator(new_dict);
 271         if (props_iter == NULL) {
 272                 errx(EXIT_FAILURE, "Failed to iterate new property list");
 273         }
 274
 275         while ((props_obj = prop_object_iterator_next(props_iter)) != NULL) {
 276                 props_keysym = (prop_dictionary_keysym_t)props_obj;
 277                 props_key = prop_dictionary_keysym_cstring_nocopy(props_keysym);
 278                 props_obj = prop_dictionary_get_keysym(new_dict, props_keysym);
 279                 if ((props_obj == NULL) || !prop_dictionary_set(existing_dict,
 280                     props_key, props_obj)) {
 281                         errx(EXIT_FAILURE, "Failed to copy "
 282                             "existing property list");
 283                 }
 284         }
 285         prop_object_iterator_release(props_iter);
 286
 287         return;
 288 }