/* * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ #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"#include "internal.h" long sys_fork(void){	long ret; 	current->thread.forking = 1;	ret = do_fork(SIGCHLD, UPT_SP(&current->thread.regs.regs),		      &current->thread.regs, 0, NULL, NULL);	current->thread.forking = 0;	return ret;} long sys_vfork(void){	long ret; 	current->thread.forking = 1;	ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,		      UPT_SP(&current->thread.regs.regs),		      &current->thread.regs, 0, NULL, NULL);	current->thread.forking = 0;	return ret;} 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; 	err = sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT); out:	return err;} int kernel_execve(const char *filename,		  const char *const argv[],		  const char *const envp[]){	mm_segment_t fs;	int ret; 	fs = get_fs();	set_fs(KERNEL_DS);	ret = um_execve(filename, (const char __user *const __user *)argv,			(const char __user *const __user *) envp);	set_fs(fs); 	return ret;}