syscall.c 1.1 KB
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/*
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 * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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 * Licensed under the GPL
 */

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#include <linux/file.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/utsname.h>
#include <linux/syscalls.h>
#include <asm/current.h>
#include <asm/mman.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
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long sys_fork(void)
{
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	return do_fork(SIGCHLD, 0,
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		      &current->thread.regs, 0, NULL, NULL);
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}

long sys_vfork(void)
{
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	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, 0,
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		      &current->thread.regs, 0, NULL, NULL);
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}

long sys_clone(unsigned long clone_flags, unsigned long newsp,
	       void __user *parent_tid, void __user *child_tid)
{
	return do_fork(clone_flags, newsp, &current->thread.regs, 0, parent_tid,
		      child_tid);
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}

long old_mmap(unsigned long addr, unsigned long len,
	      unsigned long prot, unsigned long flags,
	      unsigned long fd, unsigned long offset)
{
	long err = -EINVAL;
	if (offset & ~PAGE_MASK)
		goto out;

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	err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
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 out:
	return err;
}