#include "linux/kernel.h"
#include "linux/string.h"
#include "linux/fs.h"
+#include "linux/hardirq.h"
#include "linux/highmem.h"
#include "asm/page.h"
#include "asm/pgtable.h"
#include "asm/uaccess.h"
#include "kern_util.h"
-#include "user_util.h"
+#include "os.h"
extern void *um_virt_to_phys(struct task_struct *task, unsigned long addr,
pte_t *pte_out);
return((unsigned long) phys);
}
-static int do_op(unsigned long addr, int len, int is_write,
+static int do_op_one_page(unsigned long addr, int len, int is_write,
int (*op)(unsigned long addr, int len, void *arg), void *arg)
{
struct page *page;
return(-1);
page = phys_to_page(addr);
- addr = (unsigned long) kmap(page) + (addr & ~PAGE_MASK);
+ addr = (unsigned long) kmap_atomic(page, KM_UML_USERCOPY) + (addr & ~PAGE_MASK);
+
n = (*op)(addr, len, arg);
- kunmap(page);
+
+ kunmap_atomic(page, KM_UML_USERCOPY);
return(n);
}
remain = len;
current->thread.fault_catcher = jmpbuf;
- n = do_op(addr, size, is_write, op, arg);
+ n = do_op_one_page(addr, size, is_write, op, arg);
if(n != 0){
*res = (n < 0 ? remain : 0);
goto out;
}
while(addr < ((addr + remain) & PAGE_MASK)){
- n = do_op(addr, PAGE_SIZE, is_write, op, arg);
+ n = do_op_one_page(addr, PAGE_SIZE, is_write, op, arg);
if(n != 0){
*res = (n < 0 ? remain : 0);
goto out;
goto out;
}
- n = do_op(addr, remain, is_write, op, arg);
+ n = do_op_one_page(addr, remain, is_write, op, arg);
if(n != 0)
*res = (n < 0 ? remain : 0);
else *res = 0;
return(0);
}
- return(access_ok_skas(VERIFY_READ, from, n) ?
+ return(access_ok(VERIFY_READ, from, n) ?
buffer_op((unsigned long) from, n, 0, copy_chunk_from_user, &to):
n);
}
return(0);
}
- return(access_ok_skas(VERIFY_WRITE, to, n) ?
+ return(access_ok(VERIFY_WRITE, to, n) ?
buffer_op((unsigned long) to, n, 1, copy_chunk_to_user, &from) :
n);
}
return(strnlen(dst, count));
}
- if(!access_ok_skas(VERIFY_READ, src, 1))
+ if(!access_ok(VERIFY_READ, src, 1))
return(-EFAULT);
n = buffer_op((unsigned long) src, count, 0, strncpy_chunk_from_user,
return(0);
}
- return(access_ok_skas(VERIFY_WRITE, mem, len) ?
+ return(access_ok(VERIFY_WRITE, mem, len) ?
buffer_op((unsigned long) mem, len, 1, clear_chunk, NULL) : len);
}