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| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 | 
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| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 | 
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/moduleparam.h | |
| download | olio-linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz olio-linux-3.10-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip  | |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/moduleparam.h')
| -rw-r--r-- | include/linux/moduleparam.h | 182 | 
1 files changed, 182 insertions, 0 deletions
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h new file mode 100644 index 00000000000..368ec8e45bd --- /dev/null +++ b/include/linux/moduleparam.h @@ -0,0 +1,182 @@ +#ifndef _LINUX_MODULE_PARAMS_H +#define _LINUX_MODULE_PARAMS_H +/* (C) Copyright 2001, 2002 Rusty Russell IBM Corporation */ +#include <linux/init.h> +#include <linux/stringify.h> +#include <linux/kernel.h> + +/* You can override this manually, but generally this should match the +   module name. */ +#ifdef MODULE +#define MODULE_PARAM_PREFIX /* empty */ +#else +#define MODULE_PARAM_PREFIX __stringify(KBUILD_MODNAME) "." +#endif + +#ifdef MODULE +#define ___module_cat(a,b) __mod_ ## a ## b +#define __module_cat(a,b) ___module_cat(a,b) +#define __MODULE_INFO(tag, name, info)					  \ +static const char __module_cat(name,__LINE__)[]				  \ +  __attribute_used__							  \ +  __attribute__((section(".modinfo"),unused)) = __stringify(tag) "=" info +#else  /* !MODULE */ +#define __MODULE_INFO(tag, name, info) +#endif +#define __MODULE_PARM_TYPE(name, _type)					  \ +  __MODULE_INFO(parmtype, name##type, #name ":" _type) + +struct kernel_param; + +/* Returns 0, or -errno.  arg is in kp->arg. */ +typedef int (*param_set_fn)(const char *val, struct kernel_param *kp); +/* Returns length written or -errno.  Buffer is 4k (ie. be short!) */ +typedef int (*param_get_fn)(char *buffer, struct kernel_param *kp); + +struct kernel_param { +	const char *name; +	unsigned int perm; +	param_set_fn set; +	param_get_fn get; +	void *arg; +}; + +/* Special one for strings we want to copy into */ +struct kparam_string { +	unsigned int maxlen; +	char *string; +}; + +/* Special one for arrays */ +struct kparam_array +{ +	unsigned int max; +	unsigned int *num; +	param_set_fn set; +	param_get_fn get; +	unsigned int elemsize; +	void *elem; +}; + +/* This is the fundamental function for registering boot/module +   parameters.  perm sets the visibility in driverfs: 000 means it's +   not there, read bits mean it's readable, write bits mean it's +   writable. */ +#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 } + +#define module_param_call(name, set, get, arg, perm)			      \ +	__module_param_call(MODULE_PARAM_PREFIX, name, set, get, arg, perm) + +/* Helper functions: type is byte, short, ushort, int, uint, long, +   ulong, charp, bool or invbool, or XXX if you define param_get_XXX, +   param_set_XXX and param_check_XXX. */ +#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) + +#define module_param(name, type, perm)				\ +	module_param_named(name, name, type, perm) + +/* Actually copy string: maxlen param is usually sizeof(string). */ +#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") + +/* Called on module insert or kernel boot */ +extern int parse_args(const char *name, +		      char *args, +		      struct kernel_param *params, +		      unsigned num, +		      int (*unknown)(char *param, char *val)); + +/* All the helper functions */ +/* The macros to do compile-time type checking stolen from Jakub +   Jelinek, who IIRC came up with this idea for the 2.4 module init code. */ +#define __param_check(name, p, type) \ +	static inline type *__check_##name(void) { return(p); } + +extern int param_set_byte(const char *val, struct kernel_param *kp); +extern int param_get_byte(char *buffer, struct kernel_param *kp); +#define param_check_byte(name, p) __param_check(name, p, unsigned char) + +extern int param_set_short(const char *val, struct kernel_param *kp); +extern int param_get_short(char *buffer, struct kernel_param *kp); +#define param_check_short(name, p) __param_check(name, p, short) + +extern int param_set_ushort(const char *val, struct kernel_param *kp); +extern int param_get_ushort(char *buffer, struct kernel_param *kp); +#define param_check_ushort(name, p) __param_check(name, p, unsigned short) + +extern int param_set_int(const char *val, struct kernel_param *kp); +extern int param_get_int(char *buffer, struct kernel_param *kp); +#define param_check_int(name, p) __param_check(name, p, int) + +extern int param_set_uint(const char *val, struct kernel_param *kp); +extern int param_get_uint(char *buffer, struct kernel_param *kp); +#define param_check_uint(name, p) __param_check(name, p, unsigned int) + +extern int param_set_long(const char *val, struct kernel_param *kp); +extern int param_get_long(char *buffer, struct kernel_param *kp); +#define param_check_long(name, p) __param_check(name, p, long) + +extern int param_set_ulong(const char *val, struct kernel_param *kp); +extern int param_get_ulong(char *buffer, struct kernel_param *kp); +#define param_check_ulong(name, p) __param_check(name, p, unsigned long) + +extern int param_set_charp(const char *val, struct kernel_param *kp); +extern int param_get_charp(char *buffer, struct kernel_param *kp); +#define param_check_charp(name, p) __param_check(name, p, char *) + +extern int param_set_bool(const char *val, struct kernel_param *kp); +extern int param_get_bool(char *buffer, struct kernel_param *kp); +#define param_check_bool(name, p) __param_check(name, p, int) + +extern int param_set_invbool(const char *val, struct kernel_param *kp); +extern int param_get_invbool(char *buffer, struct kernel_param *kp); +#define param_check_invbool(name, p) __param_check(name, p, int) + +/* Comma-separated array: *nump is set to number they actually specified. */ +#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) + +#define module_param_array(name, type, nump, perm)		\ +	module_param_array_named(name, name, type, nump, perm) + +extern int param_array_set(const char *val, struct kernel_param *kp); +extern int param_array_get(char *buffer, struct kernel_param *kp); + +extern int param_set_copystring(const char *val, struct kernel_param *kp); +extern int param_get_string(char *buffer, struct kernel_param *kp); + +int param_array(const char *name, +		const char *val, +		unsigned int min, unsigned int max, +		void *elem, int elemsize, +		int (*set)(const char *, struct kernel_param *kp), +		int *num); + +/* for exporting parameters in /sys/parameters */ + +struct module; + +extern int module_param_sysfs_setup(struct module *mod, +				    struct kernel_param *kparam, +				    unsigned int num_params); + +extern void module_param_sysfs_remove(struct module *mod); + +#endif /* _LINUX_MODULE_PARAMS_H */  |