1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 
 4 */
 5
 6#include <linux/file.h>
 7#include <linux/fs.h>
 8#include <linux/mm.h>
 9#include <linux/sched.h>
10#include <linux/utsname.h>
11#include <linux/syscalls.h>
12#include <asm/current.h>
13#include <asm/mman.h>
14#include <linux/uaccess.h>
15#include <asm/unistd.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
16
17long old_mmap(unsigned long addr, unsigned long len,
18	      unsigned long prot, unsigned long flags,
19	      unsigned long fd, unsigned long offset)
20{
21	long err = -EINVAL;
22	if (offset & ~PAGE_MASK)
23		goto out;
24
25	err = ksys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
26 out:
27	return err;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
28}

 
 1/*
 2 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 3 * Licensed under the GPL
 4 */
 5
 6#include "linux/file.h"
 7#include "linux/fs.h"
 8#include "linux/mm.h"
 9#include "linux/sched.h"
10#include "linux/utsname.h"
11#include "linux/syscalls.h"
12#include "asm/current.h"
13#include "asm/mman.h"
14#include "asm/uaccess.h"
15#include "asm/unistd.h"
16#include "internal.h"
17
18long sys_fork(void)
19{
20	long ret;
21
22	current->thread.forking = 1;
23	ret = do_fork(SIGCHLD, UPT_SP(&current->thread.regs.regs),
24		      &current->thread.regs, 0, NULL, NULL);
25	current->thread.forking = 0;
26	return ret;
27}
28
29long sys_vfork(void)
30{
31	long ret;
32
33	current->thread.forking = 1;
34	ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
35		      UPT_SP(&current->thread.regs.regs),
36		      &current->thread.regs, 0, NULL, NULL);
37	current->thread.forking = 0;
38	return ret;
39}
40
41long 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
49	err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
50 out:
51	return err;
52}
53
54int kernel_execve(const char *filename,
55		  const char *const argv[],
56		  const char *const envp[])
57{
58	mm_segment_t fs;
59	int ret;
60
61	fs = get_fs();
62	set_fs(KERNEL_DS);
63	ret = um_execve(filename, (const char __user *const __user *)argv,
64			(const char __user *const __user *) envp);
65	set_fs(fs);
66
67	return ret;
68}