Jeff Dike | 1d3468a | 2006-07-10 04:45:13 -0700 | [diff] [blame] | 1 | /* |
Jeff Dike | ba180fd | 2007-10-16 01:27:00 -0700 | [diff] [blame] | 2 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Licensed under the GPL |
| 4 | */ |
| 5 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | #include "linux/file.h" |
Alexey Dobriyan | 4e950f6 | 2007-07-30 02:36:13 +0400 | [diff] [blame] | 7 | #include "linux/fs.h" |
Jeff Dike | ba180fd | 2007-10-16 01:27:00 -0700 | [diff] [blame] | 8 | #include "linux/mm.h" |
| 9 | #include "linux/sched.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | #include "linux/utsname.h" |
Al Viro | f8b7256 | 2009-11-30 17:37:04 -0500 | [diff] [blame] | 11 | #include "linux/syscalls.h" |
Jeff Dike | ba180fd | 2007-10-16 01:27:00 -0700 | [diff] [blame] | 12 | #include "asm/current.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include "asm/mman.h" |
| 14 | #include "asm/uaccess.h" |
Jeff Dike | ba180fd | 2007-10-16 01:27:00 -0700 | [diff] [blame] | 15 | #include "asm/unistd.h" |
Al Viro | ff64b4c | 2008-08-18 04:01:47 -0400 | [diff] [blame] | 16 | #include "internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | long sys_fork(void) |
| 19 | { |
| 20 | long ret; |
| 21 | |
| 22 | current->thread.forking = 1; |
Jeff Dike | e0877f0 | 2005-06-25 14:55:21 -0700 | [diff] [blame] | 23 | ret = do_fork(SIGCHLD, UPT_SP(¤t->thread.regs.regs), |
| 24 | ¤t->thread.regs, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | current->thread.forking = 0; |
Jeff Dike | ba180fd | 2007-10-16 01:27:00 -0700 | [diff] [blame] | 26 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | } |
| 28 | |
| 29 | long sys_vfork(void) |
| 30 | { |
| 31 | long ret; |
| 32 | |
| 33 | current->thread.forking = 1; |
Jeff Dike | e0877f0 | 2005-06-25 14:55:21 -0700 | [diff] [blame] | 34 | ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, |
| 35 | UPT_SP(¤t->thread.regs.regs), |
| 36 | ¤t->thread.regs, 0, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | current->thread.forking = 0; |
Jeff Dike | ba180fd | 2007-10-16 01:27:00 -0700 | [diff] [blame] | 38 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | } |
| 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | long old_mmap(unsigned long addr, unsigned long len, |
| 42 | unsigned long prot, unsigned long flags, |
| 43 | unsigned long fd, unsigned long offset) |
| 44 | { |
| 45 | long err = -EINVAL; |
| 46 | if (offset & ~PAGE_MASK) |
| 47 | goto out; |
| 48 | |
Al Viro | f8b7256 | 2009-11-30 17:37:04 -0500 | [diff] [blame] | 49 | err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | out: |
| 51 | return err; |
| 52 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
David Howells | d762746 | 2010-08-17 23:52:56 +0100 | [diff] [blame] | 54 | int kernel_execve(const char *filename, |
| 55 | const char *const argv[], |
| 56 | const char *const envp[]) |
Arnd Bergmann | 3db03b4 | 2006-10-02 02:18:31 -0700 | [diff] [blame] | 57 | { |
| 58 | mm_segment_t fs; |
| 59 | int ret; |
| 60 | |
| 61 | fs = get_fs(); |
| 62 | set_fs(KERNEL_DS); |
Richard Weinberger | cb1dcc0 | 2010-09-22 13:05:07 -0700 | [diff] [blame] | 63 | ret = um_execve(filename, (const char __user *const __user *)argv, |
| 64 | (const char __user *const __user *) envp); |
Arnd Bergmann | 3db03b4 | 2006-10-02 02:18:31 -0700 | [diff] [blame] | 65 | set_fs(fs); |
| 66 | |
| 67 | return ret; |
| 68 | } |