#include <linux/err.h>
#include <linux/highmem.h>
#include <linux/mm.h>
+#include <linux/module.h>
#include <linux/sched.h>
#include <asm/current.h>
#include <asm/page.h>
buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to):
n;
}
+EXPORT_SYMBOL(copy_from_user);
static int copy_chunk_to_user(unsigned long to, int len, void *arg)
{
buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from) :
n;
}
+EXPORT_SYMBOL(copy_to_user);
static int strncpy_chunk_from_user(unsigned long from, int len, void *arg)
{
return -EFAULT;
return strnlen(dst, count);
}
+EXPORT_SYMBOL(strncpy_from_user);
static int clear_chunk(unsigned long addr, int len, void *unused)
{
return access_ok(VERIFY_WRITE, mem, len) ?
buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL) : len;
}
+EXPORT_SYMBOL(clear_user);
static int strnlen_chunk(unsigned long str, int len, void *arg)
{
return count + 1;
return -EFAULT;
}
+EXPORT_SYMBOL(strnlen_user);