projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | } |