kernel/params.c

   1 /* Helpers for initial module or kernel cmdline parsing
   2    Copyright (C) 2001 Rusty Russell.
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17 */
  18 #include <linux/moduleparam.h>
  19 #include <linux/kernel.h>
  20 #include <linux/string.h>
  21 #include <linux/errno.h>
  22 #include <linux/module.h>
  23 #include <linux/device.h>
  24 #include <linux/err.h>
  25 #include <linux/slab.h>
  26
  27 #if 0
  28 #define DEBUGP printk
  29 #else
  30 #define DEBUGP(fmt, a...)
  31 #endif
  32
  33 static inline char dash2underscore(char c)
  34 {
  35         if (c == '-')
  36                 return '_';
  37         return c;
  38 }
  39
  40 static inline int parameq(const char *input, const char *paramname)
  41 {
  42         unsigned int i;
  43         for (i = 0; dash2underscore(input[i]) == paramname[i]; i++)
  44                 if (input[i] == '\0')
  45                         return 1;
  46         return 0;
  47 }
  48
  49 static int parse_one(char *param,
  50                      char *val,
  51                      struct kernel_param *params,
  52                      unsigned num_params,
  53                      int (*handle_unknown)(char *param, char *val))
  54 {
  55         unsigned int i;
  56
  57         /* Find parameter */
  58         for (i = 0; i < num_params; i++) {
  59                 if (parameq(param, params[i].name)) {
  60                         DEBUGP("They are equal!  Calling %p\n",
  61                                params[i].set);
  62                         return params[i].set(val, &params[i]);
  63                 }
  64         }
  65
  66         if (handle_unknown) {
  67                 DEBUGP("Unknown argument: calling %p\n", handle_unknown);
  68                 return handle_unknown(param, val);
  69         }
  70
  71         DEBUGP("Unknown argument `%s'\n", param);
  72         return -ENOENT;
  73 }
  74
  75 /* You can use " around spaces, but can't escape ". */
  76 /* Hyphens and underscores equivalent in parameter names. */
  77 static char *next_arg(char *args, char **param, char **val)
  78 {
  79         unsigned int i, equals = 0;
  80         int in_quote = 0, quoted = 0;
  81         char *next;
  82
  83         if (*args == '"') {
  84                 args++;
  85                 in_quote = 1;
  86                 quoted = 1;
  87         }
  88
  89         for (i = 0; args[i]; i++) {
  90                 if (args[i] == ' ' && !in_quote)
  91                         break;
  92                 if (equals == 0) {
  93                         if (args[i] == '=')
  94                                 equals = i;
  95                 }
  96                 if (args[i] == '"')
  97                         in_quote = !in_quote;
  98         }
  99
 100         *param = args;
 101         if (!equals)
 102                 *val = NULL;
 103         else {
 104                 args[equals] = '\0';
 105                 *val = args + equals + 1;
 106
 107                 /* Don't include quotes in value. */
 108                 if (**val == '"') {
 109                         (*val)++;
 110                         if (args[i-1] == '"')
 111                                 args[i-1] = '\0';
 112                 }
 113                 if (quoted && args[i-1] == '"')
 114                         args[i-1] = '\0';
 115         }
 116
 117         if (args[i]) {
 118                 args[i] = '\0';
 119                 next = args + i + 1;
 120         } else
 121                 next = args + i;
 122
 123         /* Chew up trailing spaces. */
 124         while (*next == ' ')
 125                 next++;
 126         return next;
 127 }
 128
 129 /* Args looks like "foo=bar,bar2 baz=fuz wiz". */
 130 int parse_args(const char *name,
 131                char *args,
 132                struct kernel_param *params,
 133                unsigned num,
 134                int (*unknown)(char *param, char *val))
 135 {
 136         char *param, *val;
 137
 138         DEBUGP("Parsing ARGS: %s\n", args);
 139
 140         /* Chew leading spaces */
 141         while (*args == ' ')
 142                 args++;
 143
 144         while (*args) {
 145                 int ret;
 146                 int irq_was_disabled;
 147
 148                 args = next_arg(args, &param, &val);
 149                 irq_was_disabled = irqs_disabled();
 150                 ret = parse_one(param, val, params, num, unknown);
 151                 if (irq_was_disabled && !irqs_disabled()) {
 152                         printk(KERN_WARNING "parse_args(): option '%s' enabled "
 153                                         "irq's!\n", param);
 154                 }
 155                 switch (ret) {
 156                 case -ENOENT:
 157                         printk(KERN_ERR "%s: Unknown parameter `%s'\n",
 158                                name, param);
 159                         return ret;
 160                 case -ENOSPC:
 161                         printk(KERN_ERR
 162                                "%s: `%s' too large for parameter `%s'\n",
 163                                name, val ?: "", param);
 164                         return ret;
 165                 case 0:
 166                         break;
 167                 default:
 168                         printk(KERN_ERR
 169                                "%s: `%s' invalid for parameter `%s'\n",
 170                                name, val ?: "", param);
 171                         return ret;
 172                 }
 173         }
 174
 175         /* All parsed OK. */
 176         return 0;
 177 }
 178
 179 /* Lazy bastard, eh? */
 180 #define STANDARD_PARAM_DEF(name, type, format, tmptype, strtolfn)       \
 181         int param_set_##name(const char *val, struct kernel_param *kp)  \
 182         {                                                               \
 183                 tmptype l;                                              \
 184                 int ret;                                                \
 185                                                                         \
 186                 if (!val) return -EINVAL;                               \
 187                 ret = strtolfn(val, 0, &l);                             \
 188                 if (ret == -EINVAL || ((type)l != l))                   \
 189                         return -EINVAL;                                 \
 190                 *((type *)kp->arg) = l;                                 \
 191                 return 0;                                               \
 192         }                                                               \
 193         int param_get_##name(char *buffer, struct kernel_param *kp)     \
 194         {                                                               \
 195                 return sprintf(buffer, format, *((type *)kp->arg));     \
 196         }
 197
 198 STANDARD_PARAM_DEF(byte, unsigned char, "%c", unsigned long, strict_strtoul);
 199 STANDARD_PARAM_DEF(short, short, "%hi", long, strict_strtol);
 200 STANDARD_PARAM_DEF(ushort, unsigned short, "%hu", unsigned long, strict_strtoul);
 201 STANDARD_PARAM_DEF(int, int, "%i", long, strict_strtol);
 202 STANDARD_PARAM_DEF(uint, unsigned int, "%u", unsigned long, strict_strtoul);
 203 STANDARD_PARAM_DEF(long, long, "%li", long, strict_strtol);
 204 STANDARD_PARAM_DEF(ulong, unsigned long, "%lu", unsigned long, strict_strtoul);
 205
 206 int param_set_charp(const char *val, struct kernel_param *kp)
 207 {
 208         if (!val) {
 209                 printk(KERN_ERR "%s: string parameter expected\n",
 210                        kp->name);
 211                 return -EINVAL;
 212         }
 213
 214         if (strlen(val) > 1024) {
 215                 printk(KERN_ERR "%s: string parameter too long\n",
 216                        kp->name);
 217                 return -ENOSPC;
 218         }
 219
 220         *(char **)kp->arg = (char *)val;
 221         return 0;
 222 }
 223
 224 int param_get_charp(char *buffer, struct kernel_param *kp)
 225 {
 226         return sprintf(buffer, "%s", *((char **)kp->arg));
 227 }
 228
 229 int param_set_bool(const char *val, struct kernel_param *kp)
 230 {
 231         /* No equals means "set"... */
 232         if (!val) val = "1";
 233
 234         /* One of =[yYnN01] */
 235         switch (val[0]) {
 236         case 'y': case 'Y': case '1':
 237                 *(int *)kp->arg = 1;
 238                 return 0;
 239         case 'n': case 'N': case '0':
 240                 *(int *)kp->arg = 0;
 241                 return 0;
 242         }
 243         return -EINVAL;
 244 }
 245
 246 int param_get_bool(char *buffer, struct kernel_param *kp)
 247 {
 248         /* Y and N chosen as being relatively non-coder friendly */
 249         return sprintf(buffer, "%c", (*(int *)kp->arg) ? 'Y' : 'N');
 250 }
 251
 252 int param_set_invbool(const char *val, struct kernel_param *kp)
 253 {
 254         int boolval, ret;
 255         struct kernel_param dummy;
 256
 257         dummy.arg = &boolval;
 258         ret = param_set_bool(val, &dummy);
 259         if (ret == 0)
 260                 *(int *)kp->arg = !boolval;
 261         return ret;
 262 }
 263
 264 int param_get_invbool(char *buffer, struct kernel_param *kp)
 265 {
 266         return sprintf(buffer, "%c", (*(int *)kp->arg) ? 'N' : 'Y');
 267 }
 268
 269 /* We break the rule and mangle the string. */
 270 static int param_array(const char *name,
 271                        const char *val,
 272                        unsigned int min, unsigned int max,
 273                        void *elem, int elemsize,
 274                        int (*set)(const char *, struct kernel_param *kp),
 275                        unsigned int *num)
 276 {
 277         int ret;
 278         struct kernel_param kp;
 279         char save;
 280
 281         /* Get the name right for errors. */
 282         kp.name = name;
 283         kp.arg = elem;
 284
 285         /* No equals sign? */
 286         if (!val) {
 287                 printk(KERN_ERR "%s: expects arguments\n", name);
 288                 return -EINVAL;
 289         }
 290
 291         *num = 0;
 292         /* We expect a comma-separated list of values. */
 293         do {
 294                 int len;
 295
 296                 if (*num == max) {
 297                         printk(KERN_ERR "%s: can only take %i arguments\n",
 298                                name, max);
 299                         return -EINVAL;
 300                 }
 301                 len = strcspn(val, ",");
 302
 303                 /* nul-terminate and parse */
 304                 save = val[len];
 305                 ((char *)val)[len] = '\0';
 306                 ret = set(val, &kp);
 307
 308                 if (ret != 0)
 309                         return ret;
 310                 kp.arg += elemsize;
 311                 val += len+1;
 312                 (*num)++;
 313         } while (save == ',');
 314
 315         if (*num < min) {
 316                 printk(KERN_ERR "%s: needs at least %i arguments\n",
 317                        name, min);
 318                 return -EINVAL;
 319         }
 320         return 0;
 321 }
 322
 323 int param_array_set(const char *val, struct kernel_param *kp)
 324 {
 325         const struct kparam_array *arr = kp->arr;
 326         unsigned int temp_num;
 327
 328         return param_array(kp->name, val, 1, arr->max, arr->elem,
 329                            arr->elemsize, arr->set, arr->num ?: &temp_num);
 330 }
 331
 332 int param_array_get(char *buffer, struct kernel_param *kp)
 333 {
 334         int i, off, ret;
 335         const struct kparam_array *arr = kp->arr;
 336         struct kernel_param p;
 337
 338         p = *kp;
 339         for (i = off = 0; i < (arr->num ? *arr->num : arr->max); i++) {
 340                 if (i)
 341                         buffer[off++] = ',';
 342                 p.arg = arr->elem + arr->elemsize * i;
 343                 ret = arr->get(buffer + off, &p);
 344                 if (ret < 0)
 345                         return ret;
 346                 off += ret;
 347         }
 348         buffer[off] = '\0';
 349         return off;
 350 }
 351
 352 int param_set_copystring(const char *val, struct kernel_param *kp)
 353 {
 354         const struct kparam_string *kps = kp->str;
 355
 356         if (!val) {
 357                 printk(KERN_ERR "%s: missing param set value\n", kp->name);
 358                 return -EINVAL;
 359         }
 360         if (strlen(val)+1 > kps->maxlen) {
 361                 printk(KERN_ERR "%s: string doesn't fit in %u chars.\n",
 362                        kp->name, kps->maxlen-1);
 363                 return -ENOSPC;
 364         }
 365         strcpy(kps->string, val);
 366         return 0;
 367 }
 368
 369 int param_get_string(char *buffer, struct kernel_param *kp)
 370 {
 371         const struct kparam_string *kps = kp->str;
 372         return strlcpy(buffer, kps->string, kps->maxlen);
 373 }
 374
 375 /* sysfs output in /sys/modules/XYZ/parameters/ */
 376 #define to_module_attr(n) container_of(n, struct module_attribute, attr);
 377 #define to_module_kobject(n) container_of(n, struct module_kobject, kobj);
 378
 379 extern struct kernel_param __start___param[], __stop___param[];
 380
 381 struct param_attribute
 382 {
 383         struct module_attribute mattr;
 384         struct kernel_param *param;
 385 };
 386
 387 struct module_param_attrs
 388 {
 389         unsigned int num;
 390         struct attribute_group grp;
 391         struct param_attribute attrs[0];
 392 };
 393
 394 #ifdef CONFIG_SYSFS
 395 #define to_param_attr(n) container_of(n, struct param_attribute, mattr);
 396
 397 static ssize_t param_attr_show(struct module_attribute *mattr,
 398                                struct module *mod, char *buf)
 399 {
 400         int count;
 401         struct param_attribute *attribute = to_param_attr(mattr);
 402
 403         if (!attribute->param->get)
 404                 return -EPERM;
 405
 406         count = attribute->param->get(buf, attribute->param);
 407         if (count > 0) {
 408                 strcat(buf, "\n");
 409                 ++count;
 410         }
 411         return count;
 412 }
 413
 414 /* sysfs always hands a nul-terminated string in buf.  We rely on that. */
 415 static ssize_t param_attr_store(struct module_attribute *mattr,
 416                                 struct module *owner,
 417                                 const char *buf, size_t len)
 418 {
 419         int err;
 420         struct param_attribute *attribute = to_param_attr(mattr);
 421
 422         if (!attribute->param->set)
 423                 return -EPERM;
 424
 425         err = attribute->param->set(buf, attribute->param);
 426         if (!err)
 427                 return len;
 428         return err;
 429 }
 430 #endif
 431
 432 #ifdef CONFIG_MODULES
 433 #define __modinit
 434 #else
 435 #define __modinit __init
 436 #endif
 437
 438 #ifdef CONFIG_SYSFS
 439 /*
 440  * add_sysfs_param - add a parameter to sysfs
 441  * @mk: struct module_kobject
 442  * @kparam: the actual parameter definition to add to sysfs
 443  * @name: name of parameter
 444  *
 445  * Create a kobject if for a (per-module) parameter if mp NULL, and
 446  * create file in sysfs.  Returns an error on out of memory.  Always cleans up
 447  * if there's an error.
 448  */
 449 static __modinit int add_sysfs_param(struct module_kobject *mk,
 450                                      struct kernel_param *kp,
 451                                      const char *name)
 452 {
 453         struct module_param_attrs *new;
 454         struct attribute **attrs;
 455         int err, num;
 456
 457         /* We don't bother calling this with invisible parameters. */
 458         BUG_ON(!kp->perm);
 459
 460         if (!mk->mp) {
 461                 num = 0;
 462                 attrs = NULL;
 463         } else {
 464                 num = mk->mp->num;
 465                 attrs = mk->mp->grp.attrs;
 466         }
 467
 468         /* Enlarge. */
 469         new = krealloc(mk->mp,
 470                        sizeof(*mk->mp) + sizeof(mk->mp->attrs[0]) * (num+1),
 471                        GFP_KERNEL);
 472         if (!new) {
 473                 kfree(mk->mp);
 474                 err = -ENOMEM;
 475                 goto fail;
 476         }
 477         attrs = krealloc(attrs, sizeof(new->grp.attrs[0])*(num+2), GFP_KERNEL);
 478         if (!attrs) {
 479                 err = -ENOMEM;
 480                 goto fail_free_new;
 481         }
 482
 483         /* Sysfs wants everything zeroed. */
 484         memset(new, 0, sizeof(*new));
 485         memset(&new->attrs[num], 0, sizeof(new->attrs[num]));
 486         memset(&attrs[num], 0, sizeof(attrs[num]));
 487         new->grp.name = "parameters";
 488         new->grp.attrs = attrs;
 489
 490         /* Tack new one on the end. */
 491         new->attrs[num].param = kp;
 492         new->attrs[num].mattr.show = param_attr_show;
 493         new->attrs[num].mattr.store = param_attr_store;
 494         new->attrs[num].mattr.attr.name = (char *)name;
 495         new->attrs[num].mattr.attr.mode = kp->perm;
 496         new->num = num+1;
 497
 498         /* Fix up all the pointers, since krealloc can move us */
 499         for (num = 0; num < new->num; num++)
 500                 new->grp.attrs[num] = &new->attrs[num].mattr.attr;
 501         new->grp.attrs[num] = NULL;
 502
 503         mk->mp = new;
 504         return 0;
 505
 506 fail_free_new:
 507         kfree(new);
 508 fail:
 509         mk->mp = NULL;
 510         return err;
 511 }
 512
 513 #ifdef CONFIG_MODULES
 514 static void free_module_param_attrs(struct module_kobject *mk)
 515 {
 516         kfree(mk->mp->grp.attrs);
 517         kfree(mk->mp);
 518         mk->mp = NULL;
 519 }
 520
 521 /*
 522  * module_param_sysfs_setup - setup sysfs support for one module
 523  * @mod: module
 524  * @kparam: module parameters (array)
 525  * @num_params: number of module parameters
 526  *
 527  * Adds sysfs entries for module parameters under
 528  * /sys/module/[mod->name]/parameters/
 529  */
 530 int module_param_sysfs_setup(struct module *mod,
 531                              struct kernel_param *kparam,
 532                              unsigned int num_params)
 533 {
 534         int i, err;
 535         bool params = false;
 536
 537         for (i = 0; i < num_params; i++) {
 538                 if (kparam[i].perm == 0)
 539                         continue;
 540                 err = add_sysfs_param(&mod->mkobj, &kparam[i], kparam[i].name);
 541                 if (err)
 542                         return err;
 543                 params = true;
 544         }
 545
 546         if (!params)
 547                 return 0;
 548
 549         /* Create the param group. */
 550         err = sysfs_create_group(&mod->mkobj.kobj, &mod->mkobj.mp->grp);
 551         if (err)
 552                 free_module_param_attrs(&mod->mkobj);
 553         return err;
 554 }
 555
 556 /*
 557  * module_param_sysfs_remove - remove sysfs support for one module
 558  * @mod: module
 559  *
 560  * Remove sysfs entries for module parameters and the corresponding
 561  * kobject.
 562  */
 563 void module_param_sysfs_remove(struct module *mod)
 564 {
 565         if (mod->mkobj.mp) {
 566                 sysfs_remove_group(&mod->mkobj.kobj, &mod->mkobj.mp->grp);
 567                 /* We are positive that no one is using any param
 568                  * attrs at this point.  Deallocate immediately. */
 569                 free_module_param_attrs(&mod->mkobj);
 570         }
 571 }
 572 #endif
 573
 574 static void __init kernel_add_sysfs_param(const char *name,
 575                                           struct kernel_param *kparam,
 576                                           unsigned int name_skip)
 577 {
 578         struct module_kobject *mk;
 579         struct kobject *kobj;
 580         int err;
 581
 582         kobj = kset_find_obj(module_kset, name);
 583         if (kobj) {
 584                 /* We already have one.  Remove params so we can add more. */
 585                 mk = to_module_kobject(kobj);
 586                 /* We need to remove it before adding parameters. */
 587                 sysfs_remove_group(&mk->kobj, &mk->mp->grp);
 588         } else {
 589                 mk = kzalloc(sizeof(struct module_kobject), GFP_KERNEL);
 590                 BUG_ON(!mk);
 591
 592                 mk->mod = THIS_MODULE;
 593                 mk->kobj.kset = module_kset;
 594                 err = kobject_init_and_add(&mk->kobj, &module_ktype, NULL,
 595                                            "%s", name);
 596                 if (err) {
 597                         kobject_put(&mk->kobj);
 598                         printk(KERN_ERR "Module '%s' failed add to sysfs, "
 599                                "error number %d\n", name, err);
 600                         printk(KERN_ERR "The system will be unstable now.\n");
 601                         return;
 602                 }
 603                 /* So that exit path is even. */
 604                 kobject_get(&mk->kobj);
 605         }
 606
 607         /* These should not fail at boot. */
 608         err = add_sysfs_param(mk, kparam, kparam->name + name_skip);
 609         BUG_ON(err);
 610         err = sysfs_create_group(&mk->kobj, &mk->mp->grp);
 611         BUG_ON(err);
 612         kobject_uevent(&mk->kobj, KOBJ_ADD);
 613         kobject_put(&mk->kobj);
 614 }
 615
 616 /*
 617  * param_sysfs_builtin - add contents in /sys/parameters for built-in modules
 618  *
 619  * Add module_parameters to sysfs for "modules" built into the kernel.
 620  *
 621  * The "module" name (KBUILD_MODNAME) is stored before a dot, the
 622  * "parameter" name is stored behind a dot in kernel_param->name. So,
 623  * extract the "module" name for all built-in kernel_param-eters,
 624  * and for all who have the same, call kernel_add_sysfs_param.
 625  */
 626 static void __init param_sysfs_builtin(void)
 627 {
 628         struct kernel_param *kp;
 629         unsigned int name_len;
 630         char modname[MODULE_NAME_LEN];
 631
 632         for (kp = __start___param; kp < __stop___param; kp++) {
 633                 char *dot;
 634
 635                 if (kp->perm == 0)
 636                         continue;
 637
 638                 dot = strchr(kp->name, '.');
 639                 if (!dot) {
 640                         /* This happens for core_param() */
 641                         strcpy(modname, "kernel");
 642                         name_len = 0;
 643                 } else {
 644                         name_len = dot - kp->name + 1;
 645                         strlcpy(modname, kp->name, name_len);
 646                 }
 647                 kernel_add_sysfs_param(modname, kp, name_len);
 648         }
 649 }
 650
 651
 652 /* module-related sysfs stuff */
 653
 654 static ssize_t module_attr_show(struct kobject *kobj,
 655                                 struct attribute *attr,
 656                                 char *buf)
 657 {
 658         struct module_attribute *attribute;
 659         struct module_kobject *mk;
 660         int ret;
 661
 662         attribute = to_module_attr(attr);
 663         mk = to_module_kobject(kobj);
 664
 665         if (!attribute->show)
 666                 return -EIO;
 667
 668         ret = attribute->show(attribute, mk->mod, buf);
 669
 670         return ret;
 671 }
 672
 673 static ssize_t module_attr_store(struct kobject *kobj,
 674                                 struct attribute *attr,
 675                                 const char *buf, size_t len)
 676 {
 677         struct module_attribute *attribute;
 678         struct module_kobject *mk;
 679         int ret;
 680
 681         attribute = to_module_attr(attr);
 682         mk = to_module_kobject(kobj);
 683
 684         if (!attribute->store)
 685                 return -EIO;
 686
 687         ret = attribute->store(attribute, mk->mod, buf, len);
 688
 689         return ret;
 690 }
 691
 692 static struct sysfs_ops module_sysfs_ops = {
 693         .show = module_attr_show,
 694         .store = module_attr_store,
 695 };
 696
 697 static int uevent_filter(struct kset *kset, struct kobject *kobj)
 698 {
 699         struct kobj_type *ktype = get_ktype(kobj);
 700
 701         if (ktype == &module_ktype)
 702                 return 1;
 703         return 0;
 704 }
 705
 706 static struct kset_uevent_ops module_uevent_ops = {
 707         .filter = uevent_filter,
 708 };
 709
 710 struct kset *module_kset;
 711 int module_sysfs_initialized;
 712
 713 struct kobj_type module_ktype = {
 714         .sysfs_ops =    &module_sysfs_ops,
 715 };
 716
 717 /*
 718  * param_sysfs_init - wrapper for built-in params support
 719  */
 720 static int __init param_sysfs_init(void)
 721 {
 722         module_kset = kset_create_and_add("module", &module_uevent_ops, NULL);
 723         if (!module_kset) {
 724                 printk(KERN_WARNING "%s (%d): error creating kset\n",
 725                         __FILE__, __LINE__);
 726                 return -ENOMEM;
 727         }
 728         module_sysfs_initialized = 1;
 729
 730         param_sysfs_builtin();
 731
 732         return 0;
 733 }
 734 subsys_initcall(param_sysfs_init);
 735
 736 #endif /* CONFIG_SYSFS */
 737
 738 EXPORT_SYMBOL(param_set_byte);
 739 EXPORT_SYMBOL(param_get_byte);
 740 EXPORT_SYMBOL(param_set_short);
 741 EXPORT_SYMBOL(param_get_short);
 742 EXPORT_SYMBOL(param_set_ushort);
 743 EXPORT_SYMBOL(param_get_ushort);
 744 EXPORT_SYMBOL(param_set_int);
 745 EXPORT_SYMBOL(param_get_int);
 746 EXPORT_SYMBOL(param_set_uint);
 747 EXPORT_SYMBOL(param_get_uint);
 748 EXPORT_SYMBOL(param_set_long);
 749 EXPORT_SYMBOL(param_get_long);
 750 EXPORT_SYMBOL(param_set_ulong);
 751 EXPORT_SYMBOL(param_get_ulong);
 752 EXPORT_SYMBOL(param_set_charp);
 753 EXPORT_SYMBOL(param_get_charp);
 754 EXPORT_SYMBOL(param_set_bool);
 755 EXPORT_SYMBOL(param_get_bool);
 756 EXPORT_SYMBOL(param_set_invbool);
 757 EXPORT_SYMBOL(param_get_invbool);
 758 EXPORT_SYMBOL(param_array_set);
 759 EXPORT_SYMBOL(param_array_get);
 760 EXPORT_SYMBOL(param_set_copystring);
 761 EXPORT_SYMBOL(param_get_string);