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984263bc MD |
1 | /*- |
2 | * Copyright (c) 1992, 1993 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * (c) UNIX System Laboratories, Inc. | |
5 | * All or some portions of this file are derived from material licensed | |
6 | * to the University of California by American Telephone and Telegraph | |
7 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with | |
8 | * the permission of UNIX System Laboratories, Inc. | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions and the following disclaimer. | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in the | |
17 | * documentation and/or other materials provided with the distribution. | |
2c64e990 | 18 | * 3. Neither the name of the University nor the names of its contributors |
984263bc MD |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. | |
21 | * | |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
32 | * SUCH DAMAGE. | |
33 | * | |
34 | * @(#)exec.h 8.3 (Berkeley) 1/21/94 | |
35 | * $FreeBSD: src/sys/sys/exec.h,v 1.26 1999/12/29 04:24:40 peter Exp $ | |
26be20a0 | 36 | * $DragonFly: src/sys/sys/exec.h,v 1.5 2006/12/23 00:27:03 swildner Exp $ |
984263bc MD |
37 | */ |
38 | ||
39 | #ifndef _SYS_EXEC_H_ | |
40 | #define _SYS_EXEC_H_ | |
41 | ||
42 | /* | |
43 | * The following structure is found at the top of the user stack of each | |
44 | * user process. The ps program uses it to locate argv and environment | |
45 | * strings. Programs that wish ps to display other information may modify | |
46 | * it; normally ps_argvstr points to the argv vector, and ps_nargvstr | |
47 | * is the same as the program's argc. The fields ps_envstr and ps_nenvstr | |
48 | * are the equivalent for the environment. | |
49 | */ | |
50 | struct ps_strings { | |
51 | char **ps_argvstr; /* first of 0 or more argument strings */ | |
52 | int ps_nargvstr; /* the number of argument strings */ | |
53 | char **ps_envstr; /* first of 0 or more environment strings */ | |
54 | int ps_nenvstr; /* the number of environment strings */ | |
55 | }; | |
56 | ||
57 | /* | |
58 | * Address of ps_strings structure (in user space). | |
59 | */ | |
60 | #define PS_STRINGS (USRSTACK - sizeof(struct ps_strings)) | |
61 | #define SPARE_USRSPACE 256 | |
62 | ||
63 | struct image_params; | |
64 | ||
65 | struct execsw { | |
b153f746 | 66 | int (*ex_imgact) (struct image_params *); |
984263bc MD |
67 | const char *ex_name; |
68 | }; | |
69 | ||
70 | #include <machine/exec.h> | |
71 | ||
72 | #ifdef _KERNEL | |
73 | #include <sys/cdefs.h> | |
74 | ||
5c5185ae SG |
75 | struct lwbuf; |
76 | int exec_map_page(struct image_params *, vm_pindex_t, struct lwbuf **, | |
7c34d798 | 77 | const char **); |
5c5185ae | 78 | void exec_unmap_page(struct lwbuf *); |
b153f746 RG |
79 | int exec_map_first_page (struct image_params *); |
80 | void exec_unmap_first_page (struct image_params *); | |
984263bc | 81 | |
b153f746 RG |
82 | int exec_register (const struct execsw *); |
83 | int exec_unregister (const struct execsw *); | |
984263bc MD |
84 | |
85 | /* | |
86 | * note: name##_mod cannot be const storage because the | |
87 | * linker_file_sysinit() function modifies _file in the | |
88 | * moduledata_t. | |
89 | */ | |
90 | ||
91 | #include <sys/module.h> | |
92 | ||
1843e3f2 | 93 | #define DEFINE_EXEC_MODULE(name, execsw_arg) \ |
984263bc MD |
94 | static int name ## _modevent(module_t mod, int type, void *data) \ |
95 | { \ | |
96 | struct execsw *exec = (struct execsw *)data; \ | |
97 | int error = 0; \ | |
98 | switch (type) { \ | |
99 | case MOD_LOAD: \ | |
26be20a0 | 100 | /* kprintf(#name " module loaded\n"); */ \ |
984263bc MD |
101 | error = exec_register(exec); \ |
102 | if (error) \ | |
26be20a0 | 103 | kprintf(#name "register failed\n"); \ |
984263bc MD |
104 | break; \ |
105 | case MOD_UNLOAD: \ | |
26be20a0 | 106 | /* kprintf(#name " module unloaded\n"); */ \ |
984263bc MD |
107 | error = exec_unregister(exec); \ |
108 | if (error) \ | |
26be20a0 | 109 | kprintf(#name " unregister failed\n"); \ |
984263bc MD |
110 | break; \ |
111 | default: \ | |
112 | break; \ | |
113 | } \ | |
114 | return error; \ | |
115 | } \ | |
116 | static moduledata_t name ## _mod = { \ | |
117 | #name, \ | |
118 | name ## _modevent, \ | |
119 | (void *)& execsw_arg \ | |
1843e3f2 JH |
120 | }; |
121 | ||
122 | #define EXEC_SET_ORDERED(name, execsw_arg, order) \ | |
123 | DEFINE_EXEC_MODULE(name, execsw_arg) \ | |
124 | DECLARE_MODULE(name, name ## _mod, SI_SUB_EXEC, order) | |
125 | ||
126 | #define EXEC_SET(name, execsw_arg) \ | |
127 | EXEC_SET_ORDERED(name, execsw_arg, SI_ORDER_ANY) | |
128 | ||
984263bc MD |
129 | #endif |
130 | ||
131 | #endif |