Commit | Line | Data |
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5f97f7f9 HS |
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> | |
c80ce2d5 | 16 | #include <asm/syscalls.h> |
5f97f7f9 | 17 | |
5f97f7f9 HS |
18 | asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, |
19 | unsigned long prot, unsigned long flags, | |
20 | unsigned long fd, off_t offset) | |
21 | { | |
22 | int error = -EBADF; | |
23 | struct file *file = NULL; | |
24 | ||
25 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); | |
26 | if (!(flags & MAP_ANONYMOUS)) { | |
27 | file = fget(fd); | |
28 | if (!file) | |
29 | return error; | |
30 | } | |
31 | ||
32 | down_write(¤t->mm->mmap_sem); | |
33 | error = do_mmap_pgoff(file, addr, len, prot, flags, offset); | |
34 | up_write(¤t->mm->mmap_sem); | |
35 | ||
36 | if (file) | |
37 | fput(file); | |
38 | return error; | |
39 | } | |
c5f2420a HS |
40 | |
41 | int kernel_execve(const char *file, char **argv, char **envp) | |
42 | { | |
43 | register long scno asm("r8") = __NR_execve; | |
44 | register long sc1 asm("r12") = (long)file; | |
45 | register long sc2 asm("r11") = (long)argv; | |
46 | register long sc3 asm("r10") = (long)envp; | |
47 | ||
48 | asm volatile("scall" | |
49 | : "=r"(sc1) | |
50 | : "r"(scno), "0"(sc1), "r"(sc2), "r"(sc3) | |
51 | : "cc", "memory"); | |
52 | return sc1; | |
53 | } |