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. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)exec.h 8.3 (Berkeley) 1/21/94 39 * $FreeBSD: src/sys/sys/exec.h,v 1.26 1999/12/29 04:24:40 peter Exp $ 40 * $DragonFly: src/sys/sys/exec.h,v 1.5 2006/12/23 00:27:03 swildner Exp $ 41 */ 42 43 #ifndef _SYS_EXEC_H_ 44 #define _SYS_EXEC_H_ 45 46 /* 47 * The following structure is found at the top of the user stack of each 48 * user process. The ps program uses it to locate argv and environment 49 * strings. Programs that wish ps to display other information may modify 50 * it; normally ps_argvstr points to the argv vector, and ps_nargvstr 51 * is the same as the program's argc. The fields ps_envstr and ps_nenvstr 52 * are the equivalent for the environment. 53 */ 54 struct ps_strings { 55 char **ps_argvstr; /* first of 0 or more argument strings */ 56 int ps_nargvstr; /* the number of argument strings */ 57 char **ps_envstr; /* first of 0 or more environment strings */ 58 int ps_nenvstr; /* the number of environment strings */ 59 }; 60 61 /* 62 * Address of ps_strings structure (in user space). 63 */ 64 #define PS_STRINGS (USRSTACK - sizeof(struct ps_strings)) 65 #define SPARE_USRSPACE 256 66 67 struct image_params; 68 69 struct execsw { 70 int (*ex_imgact) (struct image_params *); 71 const char *ex_name; 72 }; 73 74 #include <machine/exec.h> 75 76 #ifdef _KERNEL 77 #include <sys/cdefs.h> 78 79 struct lwbuf; 80 int exec_map_page(struct image_params *, vm_pindex_t, struct lwbuf **, 81 const char **); 82 void exec_unmap_page(struct lwbuf *); 83 int exec_map_first_page (struct image_params *); 84 void exec_unmap_first_page (struct image_params *); 85 86 int exec_register (const struct execsw *); 87 int exec_unregister (const struct execsw *); 88 89 /* 90 * note: name##_mod cannot be const storage because the 91 * linker_file_sysinit() function modifies _file in the 92 * moduledata_t. 93 */ 94 95 #include <sys/module.h> 96 97 #define DEFINE_EXEC_MODULE(name, execsw_arg) \ 98 static int name ## _modevent(module_t mod, int type, void *data) \ 99 { \ 100 struct execsw *exec = (struct execsw *)data; \ 101 int error = 0; \ 102 switch (type) { \ 103 case MOD_LOAD: \ 104 /* kprintf(#name " module loaded\n"); */ \ 105 error = exec_register(exec); \ 106 if (error) \ 107 kprintf(#name "register failed\n"); \ 108 break; \ 109 case MOD_UNLOAD: \ 110 /* kprintf(#name " module unloaded\n"); */ \ 111 error = exec_unregister(exec); \ 112 if (error) \ 113 kprintf(#name " unregister failed\n"); \ 114 break; \ 115 default: \ 116 break; \ 117 } \ 118 return error; \ 119 } \ 120 static moduledata_t name ## _mod = { \ 121 #name, \ 122 name ## _modevent, \ 123 (void *)& execsw_arg \ 124 }; 125 126 #define EXEC_SET_ORDERED(name, execsw_arg, order) \ 127 DEFINE_EXEC_MODULE(name, execsw_arg) \ 128 DECLARE_MODULE(name, name ## _mod, SI_SUB_EXEC, order) 129 130 #define EXEC_SET(name, execsw_arg) \ 131 EXEC_SET_ORDERED(name, execsw_arg, SI_ORDER_ANY) 132 133 #endif 134 135 #endif 136