2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1992, 1993
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6 * (c) UNIX System Laboratories, Inc.
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10 * the permission of UNIX System Laboratories, Inc.
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31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)exec.h 8.3 (Berkeley) 1/21/94
43 * Before ps_args existed, the following structure, found at the top of
44 * the user stack of each user process, was used by ps(1) to locate
45 * environment and argv strings. Normally ps_argvstr points to the
46 * argv vector, and ps_nargvstr is the same as the program's argc. The
47 * fields ps_envstr and ps_nenvstr are the equivalent for the environment.
49 * Programs should now use setproctitle(3) to change ps output.
50 * setproctitle() always informs the kernel with sysctl and sets the
51 * pointers in ps_strings. The kern.proc.args sysctl first tries p_args.
52 * If p_args is NULL, it then falls back to reading ps_strings and following
56 char **ps_argvstr; /* first of 0 or more argument strings */
57 unsigned int ps_nargvstr; /* the number of argument strings */
58 char **ps_envstr; /* first of 0 or more environment strings */
59 unsigned int ps_nenvstr; /* the number of environment strings */
62 /* Coredump output parameters. */
63 struct coredump_params {
65 struct ucred *active_cred;
66 struct ucred *file_cred;
69 struct compressor *comp;
75 int (*ex_imgact)(struct image_params *);
79 #include <machine/exec.h>
82 #include <sys/cdefs.h>
85 * Address of ps_strings structure (in user space).
86 * Prefer the kern.ps_strings or kern.proc.ps_strings sysctls to this constant.
88 #define PS_STRINGS (USRSTACK - sizeof(struct ps_strings))
89 #define PROC_PS_STRINGS(p) \
90 ((p)->p_vmspace->vm_stacktop - (p)->p_sysent->sv_psstringssz)
93 * Address of signal trampoline (in user space).
94 * This assumes that the sigcode resides in the shared page.
96 #define PROC_SIGCODE(p) \
97 ((p)->p_vmspace->vm_shp_base + (p)->p_sysent->sv_sigcode_offset)
99 #define PROC_HAS_SHP(p) \
100 ((p)->p_sysent->sv_shared_page_obj != NULL)
102 int exec_map_first_page(struct image_params *);
103 void exec_unmap_first_page(struct image_params *);
105 int exec_register(const struct execsw *);
106 int exec_unregister(const struct execsw *);
110 #define CORE_BUF_SIZE (16 * 1024)
112 int core_write(struct coredump_params *, const void *, size_t, off_t,
113 enum uio_seg, size_t *);
114 int core_output(char *, size_t, off_t, struct coredump_params *, void *);
115 int sbuf_drain_core_output(void *, const char *, int);
117 extern int coredump_pack_fileinfo;
118 extern int coredump_pack_vmmapinfo;
121 * note: name##_mod cannot be const storage because the
122 * linker_file_sysinit() function modifies _file in the
126 #include <sys/module.h>
128 #define EXEC_SET(name, execsw_arg) \
129 static int __CONCAT(name,_modevent)(module_t mod, int type, \
132 struct execsw *exec = (struct execsw *)data; \
136 /* printf(#name " module loaded\n"); */ \
137 error = exec_register(exec); \
139 printf(__XSTRING(name) "register failed\n"); \
142 /* printf(#name " module unloaded\n"); */ \
143 error = exec_unregister(exec); \
145 printf(__XSTRING(name) " unregister failed\n");\
148 error = EOPNOTSUPP; \
153 static moduledata_t __CONCAT(name,_mod) = { \
155 __CONCAT(name,_modevent), \
156 (void *)& execsw_arg \
158 DECLARE_MODULE_TIED(name, __CONCAT(name,_mod), SI_SUB_EXEC, \