/
exec.h
118 lines (107 loc) · 4.21 KB
/
exec.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
/*-
* 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: exec.h,v 1.21 1998/12/16 16:28:58 bde Exp $
*/
#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 argv vector, 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 */
int ps_nargvstr; /* the number of argument strings */
char **ps_envstr; /* first of 0 or more environment strings */
int ps_nenvstr; /* the number of environment strings */
};
/*
* Address of ps_strings structure (in user space).
*/
#define PS_STRINGS (USRSTACK - sizeof(struct ps_strings))
#define SPARE_USRSPACE 256
struct image_params;
struct execsw {
int (*ex_imgact) __P((struct image_params *));
const char *ex_name;
};
#include <machine/exec.h>
#ifdef KERNEL
#include <sys/cdefs.h>
int exec_map_first_page __P((struct image_params *));
void exec_unmap_first_page __P((struct image_params *));
int exec_register __P((const struct execsw *));
int exec_unregister __P((const struct execsw *));
#ifndef LKM
#include <sys/module.h>
#define EXEC_SET(name, execsw_arg) \
static int name ## _modevent(module_t mod, int type, void *data) \
{ \
struct execsw *exec = (struct execsw *)data; \
int error = 0; \
switch (type) { \
case MOD_LOAD: \
/* printf(#name " module loaded\n"); */ \
error = exec_register(exec); \
if (error) \
printf(#name "register failed\n"); \
break; \
case MOD_UNLOAD: \
/* printf(#name " module unloaded\n"); */ \
error = exec_unregister(exec); \
if (error) \
printf(#name " unregister failed\n"); \
break; \
default: \
break; \
} \
return error; \
} \
static moduledata_t name ## _mod = { \
#name, \
name ## _modevent, \
(void *)& execsw_arg \
}; \
DECLARE_MODULE(name, name ## _mod, SI_SUB_EXEC, SI_ORDER_ANY)
#endif
#endif
#endif