/* * Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com) * Licensed under the GPL */ #include "linux/slab.h"#include "linux/smp_lock.h"#include "linux/ptrace.h"#include "asm/ptrace.h"#include "asm/pgtable.h"#include "asm/tlbflush.h"#include "asm/uaccess.h"#include "user_util.h"#include "kern_util.h"#include "mem_user.h"#include "kern.h"#include "irq_user.h"#include "tlb.h"#include "os.h"#include "choose-mode.h"#include "mode_kern.h" void flush_thread(void){	arch_flush_thread(&current->thread.arch);	CHOOSE_MODE(flush_thread_tt(), flush_thread_skas());} void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp){	CHOOSE_MODE_PROC(start_thread_tt, start_thread_skas, regs, eip, esp);} #ifdef CONFIG_TTY_LOGextern void log_exec(char **argv, void *tty);#endif static long execve1(char *file, char __user * __user *argv,		    char __user *__user *env){        long error;#ifdef CONFIG_TTY_LOG	struct tty_struct *tty; 	mutex_lock(&tty_mutex);	tty = get_current_tty();	if (tty)		log_exec(argv, tty);	mutex_unlock(&tty_mutex);#endif        error = do_execve(file, argv, env, &current->thread.regs);        if (error == 0){		task_lock(current);                current->ptrace &= ~PT_DTRACE;#ifdef SUBARCH_EXECVE1		SUBARCH_EXECVE1(&current->thread.regs.regs);#endif		task_unlock(current);                set_cmdline(current_cmd());        }        return(error);} long um_execve(char *file, char __user *__user *argv, char __user *__user *env){	long err; 	err = execve1(file, argv, env);	if(!err)		do_longjmp(current->thread.exec_buf, 1);	return(err);} long sys_execve(char __user *file, char __user *__user *argv,		char __user *__user *env){	long error;	char *filename; 	lock_kernel();	filename = getname(file);	error = PTR_ERR(filename);	if (IS_ERR(filename)) goto out;	error = execve1(filename, argv, env);	putname(filename); out:	unlock_kernel();	return(error);}