freebsd-dev/sys/i386/boot/dosboot/exec.h
1997-02-22 09:48:43 +00:00

89 lines
3.4 KiB
C

/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)exec.h 8.3 (Berkeley) 1/21/94
* $Id$
*/
#ifndef _SYS_EXEC_H_
#define _SYS_EXEC_H_
/*
* The following structure is found at the top of the user stack of each
* user process. The ps program uses it to locate argv and environment
* strings. Programs that wish ps to display other information may modify
* it; normally ps_argvstr points to the text for argv[0], and ps_nargvstr
* is the same as the program's argc. The fields ps_envstr and ps_nenvstr
* are the equivalent for the environment.
*/
struct ps_strings {
char *ps_argvstr; /* first of 0 or more argument strings */
long ps_nargvstr; /* the number of argument strings */
char *ps_envstr; /* first of 0 or more environment strings */
long ps_nenvstr; /* the number of environment strings */
};
/*
* Address of ps_strings structure (in user space).
*/
#define SPARE_USRSPACE 256
#define PS_STRINGS ((struct ps_strings *) \
(USRSTACK - sizeof(struct ps_strings) - SPARE_USRSPACE))
/*
* Arguments to the exec system call.
*/
struct execve_args {
char *fname;
char **argv;
char **envv;
};
struct execsw {
int (*ex_imgact)(void * /* struct image_params * */);
const char *ex_name;
};
#ifdef KERNEL
extern const struct execsw **execsw;
#endif
#include "mexec.h"
#endif