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