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#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/slab.h>
/* Lazy bastard, eh? */
#define STANDARD_PARAM_DEF(name, type, format, tmptype, strtolfn) \
int param_set_##name(const char *val, struct kernel_param *kp) \
{ \
return 0; \
} \
int param_get_##name(char *buffer, struct kernel_param *kp) \
{ \
return 0;\
}
STANDARD_PARAM_DEF(byte, unsigned char, "%c", unsigned long, simple_strtoul);
STANDARD_PARAM_DEF(short, short, "%hi", long, simple_strtol);
STANDARD_PARAM_DEF(ushort, unsigned short, "%hu", unsigned long, simple_strtoul);
STANDARD_PARAM_DEF(int, int, "%i", long, simple_strtol);
STANDARD_PARAM_DEF(uint, unsigned int, "%u", unsigned long, simple_strtoul);
STANDARD_PARAM_DEF(long, long, "%li", long, simple_strtol);
STANDARD_PARAM_DEF(ulong, unsigned long, "%lu", unsigned long, simple_strtoul);
int param_set_charp(const char *val, struct kernel_param *kp)
{
if (!val) {
printk(KERN_ERR "%s: string parameter expected\n",
kp->name);
return -EINVAL;
}
if (strlen(val) > 1024) {
printk(KERN_ERR "%s: string parameter too long\n",
kp->name);
return -ENOSPC;
}
*(char **)kp->arg = (char *)val;
return 0;
}
int param_get_charp(char *buffer, struct kernel_param *kp)
{
return sprintf(buffer, "%s", *((char **)kp->arg));
}
int param_set_bool(const char *val, struct kernel_param *kp)
{
/* No equals means "set"... */
if (!val) val = "1";
/* One of =[yYnN01] */
switch (val[0]) {
case 'y': case 'Y': case '1':
*(int *)kp->arg = 1;
return 0;
case 'n': case 'N': case '0':
*(int *)kp->arg = 0;
return 0;
}
return -EINVAL;
}
int param_get_bool(char *buffer, struct kernel_param *kp)
{
/* Y and N chosen as being relatively non-coder friendly */
return sprintf(buffer, "%c", (*(int *)kp->arg) ? 'Y' : 'N');
}
int param_set_invbool(const char *val, struct kernel_param *kp)
{
int boolval, ret;
struct kernel_param dummy;
dummy.arg = &boolval;
ret = param_set_bool(val, &dummy);
if (ret == 0)
*(int *)kp->arg = !boolval;
return ret;
}
int param_get_invbool(char *buffer, struct kernel_param *kp)
{
return sprintf(buffer, "%c", (*(int *)kp->arg) ? 'N' : 'Y');
}
int printk_ratelimit(void)
{
return 0;
}
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