Home | History | Annotate | Download | only in linux 
      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ****************************************************************************
     11  ****************************************************************************/
     12 #ifndef _LINUX_MODULE_PARAMS_H
     13 #define _LINUX_MODULE_PARAMS_H
     14 
     15 #include <linux/init.h>
     16 #include <linux/stringify.h>
     17 #include <linux/kernel.h>
     18 
     19 #ifdef MODULE
     20 #define MODULE_PARAM_PREFIX
     21 #else
     22 #define MODULE_PARAM_PREFIX KBUILD_MODNAME "."
     23 #endif
     24 
     25 #ifdef MODULE
     26 #define ___module_cat(a,b) __mod_ ## a ## b
     27 #define __module_cat(a,b) ___module_cat(a,b)
     28 #define __MODULE_INFO(tag, name, info)  static const char __module_cat(name,__LINE__)[]   __attribute_used__   __attribute__((section(".modinfo"),unused)) = __stringify(tag) "=" info
     29 #else
     30 #define __MODULE_INFO(tag, name, info)
     31 #endif
     32 #define __MODULE_PARM_TYPE(name, _type)   __MODULE_INFO(parmtype, name##type, #name ":" _type)
     33 
     34 struct kernel_param;
     35 
     36 typedef int (*param_set_fn)(const char *val, struct kernel_param *kp);
     37 
     38 typedef int (*param_get_fn)(char *buffer, struct kernel_param *kp);
     39 
     40 struct kernel_param {
     41  const char *name;
     42  unsigned int perm;
     43  param_set_fn set;
     44  param_get_fn get;
     45  void *arg;
     46 };
     47 
     48 struct kparam_string {
     49  unsigned int maxlen;
     50  char *string;
     51 };
     52 
     53 struct kparam_array
     54 {
     55  unsigned int max;
     56  unsigned int *num;
     57  param_set_fn set;
     58  param_get_fn get;
     59  unsigned int elemsize;
     60  void *elem;
     61 };
     62 
     63 #define __module_param_call(prefix, name, set, get, arg, perm)   static char __param_str_##name[] = prefix #name;   static struct kernel_param const __param_##name   __attribute_used__   __attribute__ ((unused,__section__ ("__param"),aligned(sizeof(void *))))   = { __param_str_##name, perm, set, get, arg }
     64 
     65 #define module_param_call(name, set, get, arg, perm)   __module_param_call(MODULE_PARAM_PREFIX, name, set, get, arg, perm)
     66 
     67 #define module_param_named(name, value, type, perm)   param_check_##type(name, &(value));   module_param_call(name, param_set_##type, param_get_##type, &value, perm);   __MODULE_PARM_TYPE(name, #type)
     68 
     69 #define module_param(name, type, perm)   module_param_named(name, name, type, perm)
     70 
     71 #define module_param_string(name, string, len, perm)   static struct kparam_string __param_string_##name   = { len, string };   module_param_call(name, param_set_copystring, param_get_string,   &__param_string_##name, perm);   __MODULE_PARM_TYPE(name, "string")
     72 
     73 #define __param_check(name, p, type)   static inline type *__check_##name(void) { return(p); }
     74 
     75 #define param_check_byte(name, p) __param_check(name, p, unsigned char)
     76 
     77 #define param_check_short(name, p) __param_check(name, p, short)
     78 
     79 #define param_check_ushort(name, p) __param_check(name, p, unsigned short)
     80 
     81 #define param_check_int(name, p) __param_check(name, p, int)
     82 
     83 #define param_check_uint(name, p) __param_check(name, p, unsigned int)
     84 
     85 #define param_check_long(name, p) __param_check(name, p, long)
     86 
     87 #define param_check_ulong(name, p) __param_check(name, p, unsigned long)
     88 
     89 #define param_check_charp(name, p) __param_check(name, p, char *)
     90 
     91 #define param_check_bool(name, p) __param_check(name, p, int)
     92 
     93 #define param_check_invbool(name, p) __param_check(name, p, int)
     94 
     95 #define module_param_array_named(name, array, type, nump, perm)   static struct kparam_array __param_arr_##name   = { ARRAY_SIZE(array), nump, param_set_##type, param_get_##type,  sizeof(array[0]), array };   module_param_call(name, param_array_set, param_array_get,   &__param_arr_##name, perm);   __MODULE_PARM_TYPE(name, "array of " #type)
     96 
     97 #define module_param_array(name, type, nump, perm)   module_param_array_named(name, name, type, nump, perm)
     98 
     99 struct module;
    100 
    101 #endif
    102