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-rw-r--r--arch/avr32/kernel/sys_avr32.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/avr32/kernel/sys_avr32.c b/arch/avr32/kernel/sys_avr32.c
new file mode 100644
index 000000000000..6ec5693da448
--- /dev/null
+++ b/arch/avr32/kernel/sys_avr32.c
@@ -0,0 +1,51 @@
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8#include <linux/errno.h>
9#include <linux/fs.h>
10#include <linux/file.h>
11#include <linux/mm.h>
12#include <linux/unistd.h>
13
14#include <asm/mman.h>
15#include <asm/uaccess.h>
16
17asmlinkage int sys_pipe(unsigned long __user *filedes)
18{
19 int fd[2];
20 int error;
21
22 error = do_pipe(fd);
23 if (!error) {
24 if (copy_to_user(filedes, fd, sizeof(fd)))
25 error = -EFAULT;
26 }
27 return error;
28}
29
30asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
31 unsigned long prot, unsigned long flags,
32 unsigned long fd, off_t offset)
33{
34 int error = -EBADF;
35 struct file *file = NULL;
36
37 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
38 if (!(flags & MAP_ANONYMOUS)) {
39 file = fget(fd);
40 if (!file)
41 return error;
42 }
43
44 down_write(&current->mm->mmap_sem);
45 error = do_mmap_pgoff(file, addr, len, prot, flags, offset);
46 up_write(&current->mm->mmap_sem);
47
48 if (file)
49 fput(file);
50 return error;
51}