struct kernel_param {
const char *name;
+ struct module *mod;
const struct kernel_param_ops *ops;
- u16 perm;
+ const u16 perm;
s8 level;
u8 flags;
union {
*
* @perm is 0 if the the variable is not to appear in sysfs, or 0444
* for world-readable, 0644 for root-writable, etc. Note that if it
- * is writable, you may need to use kparam_block_sysfs_write() around
+ * is writable, you may need to use kernel_param_lock() around
* accesses (esp. charp, which can be kfreed when it changes).
*
* The @type is simply pasted to refer to a param_ops_##type and a
parameters. */
#define __module_param_call(prefix, name, ops, arg, perm, level, flags) \
/* Default value instead of permissions? */ \
- static const char __param_str_##name[] = prefix #name; \
+ static const char __param_str_##name[] = prefix #name; \
static struct kernel_param __moduleparam_const __param_##name \
__used \
__attribute__ ((unused,__section__ ("__param"),aligned(sizeof(void *)))) \
- = { __param_str_##name, ops, VERIFY_OCTAL_PERMISSIONS(perm), \
- level, flags, { arg } }
+ = { __param_str_##name, THIS_MODULE, ops, \
+ VERIFY_OCTAL_PERMISSIONS(perm), level, flags, { arg } }
/* Obsolete - use module_param_cb() */
#define module_param_call(name, set, get, arg, perm) \
- static struct kernel_param_ops __param_ops_##name = \
+ static const struct kernel_param_ops __param_ops_##name = \
{ .flags = 0, (void *)set, (void *)get }; \
__module_param_call(MODULE_PARAM_PREFIX, \
name, &__param_ops_##name, arg, \
return 0;
}
-/**
- * kparam_block_sysfs_write - make sure a parameter isn't written via sysfs.
- * @name: the name of the parameter
- *
- * There's no point blocking write on a paramter that isn't writable via sysfs!
- */
-#define kparam_block_sysfs_write(name) \
- do { \
- BUG_ON(!(__param_##name.perm & 0222)); \
- __kernel_param_lock(); \
- } while (0)
-
-/**
- * kparam_unblock_sysfs_write - allows sysfs to write to a parameter again.
- * @name: the name of the parameter
- */
-#define kparam_unblock_sysfs_write(name) \
- do { \
- BUG_ON(!(__param_##name.perm & 0222)); \
- __kernel_param_unlock(); \
- } while (0)
-
-/**
- * kparam_block_sysfs_read - make sure a parameter isn't read via sysfs.
- * @name: the name of the parameter
- *
- * This also blocks sysfs writes.
- */
-#define kparam_block_sysfs_read(name) \
- do { \
- BUG_ON(!(__param_##name.perm & 0444)); \
- __kernel_param_lock(); \
- } while (0)
-
-/**
- * kparam_unblock_sysfs_read - allows sysfs to read a parameter again.
- * @name: the name of the parameter
- */
-#define kparam_unblock_sysfs_read(name) \
- do { \
- BUG_ON(!(__param_##name.perm & 0444)); \
- __kernel_param_unlock(); \
- } while (0)
-
#ifdef CONFIG_SYSFS
-extern void __kernel_param_lock(void);
-extern void __kernel_param_unlock(void);
+extern void kernel_param_lock(struct module *mod);
+extern void kernel_param_unlock(struct module *mod);
#else
-static inline void __kernel_param_lock(void)
+static inline void kernel_param_lock(struct module *mod)
{
}
-static inline void __kernel_param_unlock(void)
+static inline void kernel_param_unlock(struct module *mod)
{
}
#endif
#define core_param(name, var, type, perm) \
param_check_##type(name, &(var)); \
__module_param_call("", name, ¶m_ops_##type, &var, perm, -1, 0)
+
+/**
+ * core_param_unsafe - same as core_param but taints kernel
+ */
+#define core_param_unsafe(name, var, type, perm) \
+ param_check_##type(name, &(var)); \
+ __module_param_call("", name, ¶m_ops_##type, &var, perm, \
+ -1, KERNEL_PARAM_FL_UNSAFE)
+
#endif /* !MODULE */
/**
unsigned num,
s16 level_min,
s16 level_max,
+ void *arg,
int (*unknown)(char *param, char *val,
- const char *doing));
+ const char *doing, void *arg));
/* Called by module remove. */
#ifdef CONFIG_SYSFS
#define __param_check(name, p, type) \
static inline type __always_unused *__check_##name(void) { return(p); }
-extern struct kernel_param_ops param_ops_byte;
+extern const struct kernel_param_ops param_ops_byte;
extern int param_set_byte(const char *val, const struct kernel_param *kp);
extern int param_get_byte(char *buffer, const struct kernel_param *kp);
#define param_check_byte(name, p) __param_check(name, p, unsigned char)
-extern struct kernel_param_ops param_ops_short;
+extern const struct kernel_param_ops param_ops_short;
extern int param_set_short(const char *val, const struct kernel_param *kp);
extern int param_get_short(char *buffer, const struct kernel_param *kp);
#define param_check_short(name, p) __param_check(name, p, short)
-extern struct kernel_param_ops param_ops_ushort;
+extern const struct kernel_param_ops param_ops_ushort;
extern int param_set_ushort(const char *val, const struct kernel_param *kp);
extern int param_get_ushort(char *buffer, const struct kernel_param *kp);
#define param_check_ushort(name, p) __param_check(name, p, unsigned short)
-extern struct kernel_param_ops param_ops_int;
+extern const struct kernel_param_ops param_ops_int;
extern int param_set_int(const char *val, const struct kernel_param *kp);
extern int param_get_int(char *buffer, const struct kernel_param *kp);
#define param_check_int(name, p) __param_check(name, p, int)
-extern struct kernel_param_ops param_ops_uint;
+extern const struct kernel_param_ops param_ops_uint;
extern int param_set_uint(const char *val, const struct kernel_param *kp);
extern int param_get_uint(char *buffer, const struct kernel_param *kp);
#define param_check_uint(name, p) __param_check(name, p, unsigned int)
-extern struct kernel_param_ops param_ops_long;
+extern const struct kernel_param_ops param_ops_long;
extern int param_set_long(const char *val, const struct kernel_param *kp);
extern int param_get_long(char *buffer, const struct kernel_param *kp);
#define param_check_long(name, p) __param_check(name, p, long)
-extern struct kernel_param_ops param_ops_ulong;
+extern const struct kernel_param_ops param_ops_ulong;
extern int param_set_ulong(const char *val, const struct kernel_param *kp);
extern int param_get_ulong(char *buffer, const struct kernel_param *kp);
#define param_check_ulong(name, p) __param_check(name, p, unsigned long)
-extern struct kernel_param_ops param_ops_ullong;
+extern const struct kernel_param_ops param_ops_ullong;
extern int param_set_ullong(const char *val, const struct kernel_param *kp);
extern int param_get_ullong(char *buffer, const struct kernel_param *kp);
#define param_check_ullong(name, p) __param_check(name, p, unsigned long long)
-extern struct kernel_param_ops param_ops_charp;
+extern const struct kernel_param_ops param_ops_charp;
extern int param_set_charp(const char *val, const struct kernel_param *kp);
extern int param_get_charp(char *buffer, const struct kernel_param *kp);
+extern void param_free_charp(void *arg);
#define param_check_charp(name, p) __param_check(name, p, char *)
/* We used to allow int as well as bool. We're taking that away! */
-extern struct kernel_param_ops param_ops_bool;
+extern const struct kernel_param_ops param_ops_bool;
extern int param_set_bool(const char *val, const struct kernel_param *kp);
extern int param_get_bool(char *buffer, const struct kernel_param *kp);
#define param_check_bool(name, p) __param_check(name, p, bool)
-extern struct kernel_param_ops param_ops_invbool;
+extern const struct kernel_param_ops param_ops_bool_enable_only;
+extern int param_set_bool_enable_only(const char *val,
+ const struct kernel_param *kp);
+/* getter is the same as for the regular bool */
+#define param_check_bool_enable_only param_check_bool
+
+extern const struct kernel_param_ops param_ops_invbool;
extern int param_set_invbool(const char *val, const struct kernel_param *kp);
extern int param_get_invbool(char *buffer, const struct kernel_param *kp);
#define param_check_invbool(name, p) __param_check(name, p, bool)
/* An int, which can only be set like a bool (though it shows as an int). */
-extern struct kernel_param_ops param_ops_bint;
+extern const struct kernel_param_ops param_ops_bint;
extern int param_set_bint(const char *val, const struct kernel_param *kp);
#define param_get_bint param_get_int
#define param_check_bint param_check_int
perm, -1, 0); \
__MODULE_PARM_TYPE(name, "array of " #type)
-extern struct kernel_param_ops param_array_ops;
+extern const struct kernel_param_ops param_array_ops;
-extern struct kernel_param_ops param_ops_string;
+extern const struct kernel_param_ops param_ops_string;
extern int param_set_copystring(const char *val, const struct kernel_param *);
extern int param_get_string(char *buffer, const struct kernel_param *kp);
Code Review / kvmfornfv.git / blobdiff