2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * Before ps_args existed, the following structure, found at the top of
42 * the user stack of each user process, was used by ps(1) to locate
43 * environment and argv strings. Normally ps_argvstr points to the
44 * argv vector, and ps_nargvstr is the same as the program's argc. The
45 * fields ps_envstr and ps_nenvstr are the equivalent for the environment.
47 * Programs should now use setproctitle(3) to change ps output.
48 * setproctitle() always informs the kernel with sysctl and sets the
49 * pointers in ps_strings. The kern.proc.args sysctl first tries p_args.
50 * If p_args is NULL, it then falls back to reading ps_strings and following
54 char **ps_argvstr; /* first of 0 or more argument strings */
55 unsigned int ps_nargvstr; /* the number of argument strings */
56 char **ps_envstr; /* first of 0 or more environment strings */
57 unsigned int ps_nenvstr; /* the number of environment strings */
60 /* Coredump output parameters. */
61 struct coredump_params {
63 struct ucred *active_cred;
64 struct ucred *file_cred;
67 struct compressor *comp;
73 int (*ex_imgact)(struct image_params *);
77 #include <machine/exec.h>
80 #include <sys/cdefs.h>
83 * Address of ps_strings structure (in user space).
84 * Prefer the kern.ps_strings or kern.proc.ps_strings sysctls to this constant.
86 #define PS_STRINGS (USRSTACK - sizeof(struct ps_strings))
87 #define PROC_PS_STRINGS(p) \
88 ((p)->p_vmspace->vm_stacktop - (p)->p_sysent->sv_psstringssz)
91 * Address of signal trampoline (in user space).
92 * This assumes that the sigcode resides in the shared page.
94 #define PROC_SIGCODE(p) \
95 ((p)->p_vmspace->vm_shp_base + (p)->p_sysent->sv_sigcode_offset)
97 #define PROC_HAS_SHP(p) \
98 ((p)->p_sysent->sv_shared_page_obj != NULL)
100 int exec_map_first_page(struct image_params *);
101 void exec_unmap_first_page(struct image_params *);
103 int exec_register(const struct execsw *);
104 int exec_unregister(const struct execsw *);
108 #define CORE_BUF_SIZE (16 * 1024)
110 int core_write(struct coredump_params *, const void *, size_t, off_t,
111 enum uio_seg, size_t *);
112 int core_output(char *, size_t, off_t, struct coredump_params *, void *);
113 int sbuf_drain_core_output(void *, const char *, int);
115 extern int coredump_pack_fileinfo;
116 extern int coredump_pack_vmmapinfo;
119 * note: name##_mod cannot be const storage because the
120 * linker_file_sysinit() function modifies _file in the
124 #include <sys/module.h>
126 #define EXEC_SET(name, execsw_arg) \
127 static int __CONCAT(name,_modevent)(module_t mod, int type, \
130 struct execsw *exec = (struct execsw *)data; \
134 /* printf(#name " module loaded\n"); */ \
135 error = exec_register(exec); \
137 printf(__XSTRING(name) "register failed\n"); \
140 /* printf(#name " module unloaded\n"); */ \
141 error = exec_unregister(exec); \
143 printf(__XSTRING(name) " unregister failed\n");\
146 error = EOPNOTSUPP; \
151 static moduledata_t __CONCAT(name,_mod) = { \
153 __CONCAT(name,_modevent), \
154 (void *)& execsw_arg \
156 DECLARE_MODULE_TIED(name, __CONCAT(name,_mod), SI_SUB_EXEC, \