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
44 * Before ps_args existed, the following structure, found at the top of
45 * the user stack of each user process, was used by ps(1) to locate
46 * environment and argv strings. Normally ps_argvstr points to the
47 * argv vector, and ps_nargvstr is the same as the program's argc. The
48 * fields ps_envstr and ps_nenvstr are the equivalent for the environment.
50 * Programs should now use setproctitle(3) to change ps output.
51 * setproctitle() always informs the kernel with sysctl and sets the
52 * pointers in ps_strings. The kern.proc.args sysctl first tries p_args.
53 * If p_args is NULL, it then falls back to reading ps_strings and following
57 char **ps_argvstr; /* first of 0 or more argument strings */
58 unsigned int ps_nargvstr; /* the number of argument strings */
59 char **ps_envstr; /* first of 0 or more environment strings */
60 unsigned int ps_nenvstr; /* the number of environment strings */
63 /* Coredump output parameters. */
64 struct coredump_params {
66 struct ucred *active_cred;
67 struct ucred *file_cred;
70 struct compressor *comp;
76 int (*ex_imgact)(struct image_params *);
80 #include <machine/exec.h>
83 #include <sys/cdefs.h>
86 * Address of ps_strings structure (in user space).
87 * Prefer the kern.ps_strings or kern.proc.ps_strings sysctls to this constant.
89 #define PS_STRINGS (USRSTACK - sizeof(struct ps_strings))
90 #define PROC_PS_STRINGS(p) \
91 ((p)->p_vmspace->vm_stacktop - (p)->p_sysent->sv_psstringssz)
94 * Address of signal trampoline (in user space).
95 * This assumes that the sigcode resides in the shared page.
97 #define PROC_SIGCODE(p) \
98 ((p)->p_vmspace->vm_shp_base + (p)->p_sysent->sv_sigcode_offset)
100 #define PROC_HAS_SHP(p) \
101 ((p)->p_sysent->sv_shared_page_obj != NULL)
103 int exec_map_first_page(struct image_params *);
104 void exec_unmap_first_page(struct image_params *);
106 int exec_register(const struct execsw *);
107 int exec_unregister(const struct execsw *);
111 #define CORE_BUF_SIZE (16 * 1024)
113 int core_write(struct coredump_params *, const void *, size_t, off_t,
114 enum uio_seg, size_t *);
115 int core_output(char *, size_t, off_t, struct coredump_params *, void *);
116 int sbuf_drain_core_output(void *, const char *, int);
118 extern int coredump_pack_fileinfo;
119 extern int coredump_pack_vmmapinfo;
122 * note: name##_mod cannot be const storage because the
123 * linker_file_sysinit() function modifies _file in the
127 #include <sys/module.h>
129 #define EXEC_SET(name, execsw_arg) \
130 static int __CONCAT(name,_modevent)(module_t mod, int type, \
133 struct execsw *exec = (struct execsw *)data; \
137 /* printf(#name " module loaded\n"); */ \
138 error = exec_register(exec); \
140 printf(__XSTRING(name) "register failed\n"); \
143 /* printf(#name " module unloaded\n"); */ \
144 error = exec_unregister(exec); \
146 printf(__XSTRING(name) " unregister failed\n");\
149 error = EOPNOTSUPP; \
154 static moduledata_t __CONCAT(name,_mod) = { \
156 __CONCAT(name,_modevent), \
157 (void *)& execsw_arg \
159 DECLARE_MODULE_TIED(name, __CONCAT(name,_mod), SI_SUB_EXEC, \