1/* $NetBSD: proc.h,v 1.355 2019/07/15 19:34:45 pgoyette Exp $ */
2
3/*-
4 * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Andrew Doran.
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*-
33 * Copyright (c) 1986, 1989, 1991, 1993
34 * The Regents of the University of California. All rights reserved.
35 * (c) UNIX System Laboratories, Inc.
36 * All or some portions of this file are derived from material licensed
37 * to the University of California by American Telephone and Telegraph
38 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
39 * the permission of UNIX System Laboratories, Inc.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. Neither the name of the University nor the names of its contributors
50 * may be used to endorse or promote products derived from this software
51 * without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 * SUCH DAMAGE.
64 *
65 * @(#)proc.h 8.15 (Berkeley) 5/19/95
66 */
67
68#ifndef _SYS_PROC_H_
69#define _SYS_PROC_H_
70
71#include <sys/lwp.h>
72
73#if defined(_KMEMUSER) || defined(_KERNEL)
74
75#if defined(_KERNEL_OPT)
76#include "opt_multiprocessor.h"
77#include "opt_kstack.h"
78#include "opt_lockdebug.h"
79#endif
80
81#include <machine/proc.h> /* Machine-dependent proc substruct */
82#include <machine/pcb.h>
83#include <sys/aio.h>
84#include <sys/idtype.h>
85#include <sys/rwlock.h>
86#include <sys/mqueue.h>
87#include <sys/mutex.h>
88#include <sys/condvar.h>
89#include <sys/queue.h>
90#include <sys/signalvar.h>
91#include <sys/siginfo.h>
92#include <sys/event.h>
93#include <sys/specificdata.h>
94
95#ifndef _KERNEL
96#include <sys/time.h>
97#include <sys/resource.h>
98#endif
99
100/*
101 * One structure allocated per session.
102 */
103struct session {
104 int s_count; /* Ref cnt; pgrps in session */
105 u_int s_flags;
106#define S_LOGIN_SET 1 /* s_login set in this session */
107 struct proc *s_leader; /* Session leader */
108 struct vnode *s_ttyvp; /* Vnode of controlling terminal */
109 struct tty *s_ttyp; /* Controlling terminal */
110 char s_login[MAXLOGNAME]; /* Setlogin() name */
111 pid_t s_sid; /* Session ID (pid of leader) */
112};
113
114/*
115 * One structure allocated per process group.
116 */
117struct pgrp {
118 LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */
119 struct session *pg_session; /* Pointer to session */
120 pid_t pg_id; /* Pgrp id */
121 int pg_jobc; /*
122 * Number of processes qualifying
123 * pgrp for job control
124 */
125};
126
127/*
128 * Autoloadable syscall definition
129 */
130struct sc_autoload {
131 u_int al_code;
132 const char *al_module;
133};
134
135/*
136 * One structure allocated per emulation.
137 */
138struct exec_package;
139struct ras;
140struct kauth_cred;
141
142struct emul {
143 const char *e_name; /* Symbolic name */
144 const char *e_path; /* Extra emulation path (NULL if none)*/
145#ifndef __HAVE_MINIMAL_EMUL
146 int e_flags; /* Miscellaneous flags, see above */
147 /* Syscall handling function */
148 const int *e_errno; /* Errno array */
149 int e_nosys; /* Offset of the nosys() syscall */
150 int e_nsysent; /* Number of system call entries */
151#endif
152 struct sysent *e_sysent; /* System call array */
153 const uint32_t *e_nomodbits; /* sys_nosys/sys_nomodule flags
154 * for syscall_disestablish() */
155 const char * const *e_syscallnames; /* System call name array */
156 struct sc_autoload *e_sc_autoload; /* List of autoloadable syscalls */
157 /* Signal sending function */
158 void (*e_sendsig)(const struct ksiginfo *,
159 const sigset_t *);
160 void (*e_trapsignal)(struct lwp *, struct ksiginfo *);
161 char *e_sigcode; /* Start of sigcode */
162 char *e_esigcode; /* End of sigcode */
163 /* Set registers before execution */
164 struct uvm_object **e_sigobject;/* shared sigcode object */
165 void (*e_setregs)(struct lwp *, struct exec_package *,
166 vaddr_t);
167
168 /* Per-process hooks */
169 void (*e_proc_exec)(struct proc *, struct exec_package *);
170 void (*e_proc_fork)(struct proc *, struct lwp *, int);
171 void (*e_proc_exit)(struct proc *);
172 void (*e_lwp_fork)(struct lwp *, struct lwp *);
173 void (*e_lwp_exit)(struct lwp *);
174
175#ifdef __HAVE_SYSCALL_INTERN
176 void (*e_syscall_intern)(struct proc *);
177#else
178 void (*e_syscall)(void);
179#endif
180 /* Emulation specific sysctl data */
181 struct sysctlnode *e_sysctlovly;
182
183 vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t,
184 int);
185
186 /* Emulation-specific hook for userspace page faults */
187 int (*e_usertrap)(struct lwp *, vaddr_t, void *);
188
189 size_t e_ucsize; /* size of ucontext_t */
190 void (*e_startlwp)(void *);
191
192 /* Dtrace syscall probe */
193 void (*e_dtrace_syscall)(uint32_t, register_t,
194 const struct sysent *, const void *,
195 const register_t *, int);
196
197 /* Emulation specific support for ktracing signal posts */
198 void (*e_ktrpsig)(int, sig_t, const sigset_t *,
199 const struct ksiginfo *);
200};
201
202/*
203 * Emulation miscellaneous flags
204 */
205#define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */
206
207/*
208 * Description of a process.
209 *
210 * This structure contains the information needed to manage a thread of
211 * control, known in UN*X as a process; it has references to substructures
212 * containing descriptions of things that the process uses, but may share
213 * with related processes. The process structure and the substructures
214 * are always addressible except for those marked "(PROC ONLY)" below,
215 * which might be addressible only on a processor on which the process
216 * is running.
217 *
218 * Field markings and the corresponding locks:
219 *
220 * a: p_auxlock
221 * k: ktrace_mutex
222 * l: proc_lock
223 * t: p_stmutex
224 * p: p_lock
225 * (: updated atomically
226 * :: unlocked, stable
227 */
228struct vmspace;
229
230struct proc {
231 LIST_ENTRY(proc) p_list; /* l: List of all processes */
232
233 kmutex_t p_auxlock; /* :: secondary, longer term lock */
234 kmutex_t *p_lock; /* :: general mutex */
235 kmutex_t p_stmutex; /* :: mutex on profiling state */
236 krwlock_t p_reflock; /* p: lock for debugger, procfs */
237 kcondvar_t p_waitcv; /* p: wait, stop CV on children */
238 kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */
239
240 /* Substructures: */
241 struct kauth_cred *p_cred; /* p: Master copy of credentials */
242 struct filedesc *p_fd; /* :: Ptr to open files structure */
243 struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */
244 struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */
245 struct plimit *p_limit; /* :: Process limits */
246 struct vmspace *p_vmspace; /* :: Address space */
247 struct sigacts *p_sigacts; /* :: Process sigactions */
248 struct aioproc *p_aio; /* p: Asynchronous I/O data */
249 u_int p_mqueue_cnt; /* (: Count of open message queues */
250 specificdata_reference
251 p_specdataref; /* subsystem proc-specific data */
252
253 int p_exitsig; /* l: signal to send to parent on exit */
254 int p_flag; /* p: PK_* flags */
255 int p_sflag; /* p: PS_* flags */
256 int p_slflag; /* s, l: PSL_* flags */
257 int p_lflag; /* l: PL_* flags */
258 int p_stflag; /* t: PST_* flags */
259 char p_stat; /* p: S* process status. */
260 char p_trace_enabled;/* p: cached by syscall_intern() */
261 char p_pad1[2]; /* unused */
262
263 pid_t p_pid; /* :: Process identifier. */
264 LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */
265 struct proc *p_pptr; /* l: Pointer to parent process. */
266 LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */
267 LIST_HEAD(, proc) p_children; /* l: List of children. */
268 LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */
269 struct ras *p_raslist; /* a: List of RAS entries */
270
271/* The following fields are all zeroed upon creation in fork. */
272#define p_startzero p_nlwps
273
274 int p_nlwps; /* p: Number of LWPs */
275 int p_nzlwps; /* p: Number of zombie LWPs */
276 int p_nrlwps; /* p: Number running/sleeping LWPs */
277 int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */
278 int p_ndlwps; /* p: Number of detached LWPs */
279 int p_nlwpid; /* p: Next LWP ID */
280 u_int p_nstopchild; /* l: Count of stopped/dead children */
281 u_int p_waited; /* l: parent has waited on child */
282 struct lwp *p_zomblwp; /* p: detached LWP to be reaped */
283 struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */
284
285 /* scheduling */
286 void *p_sched_info; /* p: Scheduler-specific structure */
287 fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */
288 fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */
289 unsigned int p_forktime;
290 fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */
291
292 struct proc *p_opptr; /* l: save parent during ptrace. */
293 struct ptimers *p_timers; /* Timers: real, virtual, profiling */
294 struct bintime p_rtime; /* p: real time */
295 u_quad_t p_uticks; /* t: Statclock hits in user mode */
296 u_quad_t p_sticks; /* t: Statclock hits in system mode */
297 u_quad_t p_iticks; /* t: Statclock hits processing intr */
298 uint64_t p_xutime; /* p: utime exposed to userspace */
299 uint64_t p_xstime; /* p: stime exposed to userspace */
300
301 int p_traceflag; /* k: Kernel trace points */
302 void *p_tracep; /* k: Trace private data */
303 struct vnode *p_textvp; /* :: Vnode of executable */
304
305 struct emul *p_emul; /* :: emulation information */
306 void *p_emuldata; /* :: per-proc emul data, or NULL */
307 const struct execsw *p_execsw; /* :: exec package information */
308 struct klist p_klist; /* p: knotes attached to proc */
309
310 LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */
311 sigpend_t p_sigpend; /* p: pending signals */
312 struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */
313 pid_t p_ppid; /* :: cached parent pid */
314 pid_t p_fpid; /* :: forked pid */
315 pid_t p_vfpid; /* :: vforked pid */
316 pid_t p_vfpid_done; /* :: vforked done pid */
317 lwpid_t p_lwp_created; /* :: lwp created */
318 lwpid_t p_lwp_exited; /* :: lwp exited */
319 pid_t p_pspid; /* :: posix_spawn pid */
320 char *p_path; /* :: full pathname of executable */
321
322/*
323 * End area that is zeroed on creation
324 */
325#define p_endzero p_startcopy
326
327/*
328 * The following fields are all copied upon creation in fork.
329 */
330#define p_startcopy p_sigctx
331
332 struct sigctx p_sigctx; /* p: Shared signal state */
333
334 u_char p_nice; /* p: Process "nice" value */
335 char p_comm[MAXCOMLEN+1];
336 /* p: basename of last exec file */
337 struct pgrp *p_pgrp; /* l: Pointer to process group */
338
339 vaddr_t p_psstrp; /* :: address of process's ps_strings */
340 u_int p_pax; /* :: PAX flags */
341 int p_xexit; /* p: exit code */
342/*
343 * End area that is copied on creation
344 */
345#define p_endcopy p_xsig
346 u_short p_xsig; /* p: stop signal */
347 u_short p_acflag; /* p: Acc. flags; see struct lwp also */
348 struct mdproc p_md; /* p: Any machine-dependent fields */
349 vaddr_t p_stackbase; /* :: ASLR randomized stack base */
350 struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */
351};
352
353#define p_rlimit p_limit->pl_rlimit
354#define p_session p_pgrp->pg_session
355#define p_pgid p_pgrp->pg_id
356
357#endif /* _KMEMUSER || _KERNEL */
358
359/*
360 * Status values.
361 */
362#define SIDL 1 /* Process being created by fork */
363#define SACTIVE 2 /* Process is not stopped */
364#define SDYING 3 /* About to die */
365#define SSTOP 4 /* Process debugging or suspension */
366#define SZOMB 5 /* Awaiting collection by parent */
367#define SDEAD 6 /* Almost a zombie */
368
369#define P_ZOMBIE(p) \
370 ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD)
371
372/*
373 * These flags are kept in p_flag and are protected by p_lock. Access from
374 * process context only.
375 */
376#define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */
377#define PK_SYSTEM 0x00000002 /* System process (kthread) */
378#define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */
379#define PK_SUGID 0x00000100 /* Had set id privileges since last exec */
380#define PK_KMEM 0x00000200 /* Has kmem access */
381#define PK_EXEC 0x00004000 /* Process called exec */
382#define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */
383#define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */
384#define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */
385#define PK_MARKER 0x80000000 /* Is a dummy marker process */
386
387/*
388 * These flags are kept in p_sflag and are protected by p_lock. Access from
389 * process context only.
390 */
391#define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */
392#define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */
393#define PS_WCORE 0x00001000 /* Process needs to dump core */
394#define PS_WEXIT 0x00002000 /* Working on exiting */
395#define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */
396#define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */
397#define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */
398#define PS_COREDUMP 0x20000000 /* Process core-dumped */
399#define PS_CONTINUED 0x40000000 /* Process is continued */
400#define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */
401
402/*
403 * These flags are kept in p_slflag and are protected by the proc_lock
404 * and p_lock. Access from process context only.
405 */
406#define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */
407#define PSL_TRACEVFORK 0x00000002 /* traced process wants vfork events */
408#define PSL_TRACEVFORK_DONE \
409 0x00000004 /* traced process wants vfork done events */
410#define PSL_TRACELWP_CREATE \
411 0x00000008 /* traced process wants LWP create events */
412#define PSL_TRACELWP_EXIT \
413 0x00000010 /* traced process wants LWP exit events */
414#define PSL_TRACEPOSIX_SPAWN \
415 0x00000020 /* traced process wants posix_spawn events */
416
417#define PSL_TRACED 0x00000800 /* Debugged process being traced */
418#define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */
419#define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */
420#define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */
421
422/*
423 * Kept in p_stflag and protected by p_stmutex.
424 */
425#define PST_PROFIL 0x00000020 /* Has started profiling */
426
427/*
428 * Kept in p_lflag and protected by the proc_lock. Access
429 * from process context only.
430 */
431#define PL_CONTROLT 0x00000002 /* Has a controlling terminal */
432#define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */
433#define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */
434#define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */
435
436#if defined(_KMEMUSER) || defined(_KERNEL)
437
438/*
439 * Macro to compute the exit signal to be delivered.
440 */
441#define P_EXITSIG(p) \
442 (((p)->p_slflag & PSL_TRACED) ? SIGCHLD : p->p_exitsig)
443/*
444 * Compute a wait(2) 16 bit exit status code
445 */
446#define P_WAITSTATUS(p) W_EXITCODE((p)->p_xexit, ((p)->p_xsig | \
447 (((p)->p_sflag & PS_COREDUMP) ? WCOREFLAG : 0)))
448
449LIST_HEAD(proclist, proc); /* A list of processes */
450
451/*
452 * This structure associates a proclist with its lock.
453 */
454struct proclist_desc {
455 struct proclist *pd_list; /* The list */
456 /*
457 * XXX Add a pointer to the proclist's lock eventually.
458 */
459};
460
461#ifdef _KERNEL
462
463/*
464 * We use process IDs <= PID_MAX until there are > 16k processes.
465 * NO_PGID is used to represent "no process group" for a tty.
466 */
467#define PID_MAX 30000
468#define NO_PGID ((pid_t)-1)
469
470#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
471
472/*
473 * Flags passed to fork1().
474 */
475#define FORK_PPWAIT 0x0001 /* Block parent until child exit */
476#define FORK_SHAREVM 0x0002 /* Share vmspace with parent */
477#define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */
478#define FORK_SHAREFILES 0x0008 /* Share file descriptors */
479#define FORK_SHARESIGS 0x0010 /* Share signal actions */
480#define FORK_NOWAIT 0x0020 /* Make init the parent of the child */
481#define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */
482#define FORK_SYSTEM 0x0080 /* Fork a kernel thread */
483
484extern struct proc proc0; /* Process slot for swapper */
485extern u_int nprocs; /* Current number of procs */
486extern int maxproc; /* Max number of procs */
487#define vmspace_kernel() (proc0.p_vmspace)
488
489extern kmutex_t *proc_lock;
490extern struct proclist allproc; /* List of all processes */
491extern struct proclist zombproc; /* List of zombie processes */
492
493extern struct proc *initproc; /* Process slots for init, pager */
494
495extern const struct proclist_desc proclists[];
496
497extern struct pool ptimer_pool; /* Memory pool for ptimers */
498
499int proc_find_locked(struct lwp *, struct proc **, pid_t);
500proc_t * proc_find_raw(pid_t);
501proc_t * proc_find(pid_t); /* Find process by ID */
502struct pgrp * pgrp_find(pid_t); /* Find process group by ID */
503
504void procinit(void);
505void procinit_sysctl(void);
506int proc_enterpgrp(struct proc *, pid_t, pid_t, bool);
507void proc_leavepgrp(struct proc *);
508void proc_sesshold(struct session *);
509void proc_sessrele(struct session *);
510void fixjobc(struct proc *, struct pgrp *, int);
511
512int tsleep(wchan_t, pri_t, const char *, int);
513int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *);
514void wakeup(wchan_t);
515int kpause(const char *, bool, int, kmutex_t *);
516void exit1(struct lwp *, int, int) __dead;
517int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval);
518int do_sys_wait(int *, int *, int, struct rusage *);
519int do_sys_waitid(idtype_t, id_t, int *, int *, int, struct wrusage *,
520 siginfo_t *);
521
522struct proc *proc_alloc(void);
523void proc0_init(void);
524pid_t proc_alloc_pid(struct proc *);
525void proc_free_pid(pid_t);
526void proc_free_mem(struct proc *);
527void exit_lwps(struct lwp *l);
528int fork1(struct lwp *, int, int, void *, size_t,
529 void (*)(void *), void *, register_t *);
530int pgid_in_session(struct proc *, pid_t);
531void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t,
532 void (*)(void *), void *);
533void cpu_lwp_free(struct lwp *, int);
534void cpu_lwp_free2(struct lwp *);
535void cpu_spawn_return(struct lwp*);
536
537#ifdef __HAVE_SYSCALL_INTERN
538void syscall_intern(struct proc *);
539#endif
540
541void md_child_return(struct lwp *);
542void child_return(void *);
543
544int proc_isunder(struct proc *, struct lwp *);
545int proc_uidmatch(kauth_cred_t, kauth_cred_t);
546
547int proc_vmspace_getref(struct proc *, struct vmspace **);
548void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool);
549void proc_crmod_enter(void);
550int proc_getauxv(struct proc *, void **, size_t *);
551
552int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t);
553void proc_specific_key_delete(specificdata_key_t);
554void proc_initspecific(struct proc *);
555void proc_finispecific(struct proc *);
556void * proc_getspecific(struct proc *, specificdata_key_t);
557void proc_setspecific(struct proc *, specificdata_key_t, void *);
558int proc_compare(const struct proc *, const struct lwp *,
559 const struct proc *, const struct lwp *);
560
561int proclist_foreach_call(struct proclist *,
562 int (*)(struct proc *, void *arg), void *);
563
564static __inline struct proc *
565_proclist_skipmarker(struct proc *p0)
566{
567 struct proc *p = p0;
568
569 while (p != NULL && p->p_flag & PK_MARKER)
570 p = LIST_NEXT(p, p_list);
571
572 return p;
573}
574
575#define PROC_PTRSZ(p) (((p)->p_flag & PK_32) ? sizeof(int) : sizeof(void *))
576#define PROC_REGSZ(p) (((p)->p_flag & PK_32) ? \
577 sizeof(process_reg32) : sizeof(struct reg))
578#define PROC_FPREGSZ(p) (((p)->p_flag & PK_32) ? \
579 sizeof(process_fpreg32) : sizeof(struct fpreg))
580#define PROC_DBREGSZ(p) (((p)->p_flag & PK_32) ? \
581 sizeof(process_dbreg32) : sizeof(struct dbreg))
582
583/*
584 * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones.
585 */
586#define PROCLIST_FOREACH(var, head) \
587 for ((var) = LIST_FIRST(head); \
588 ((var) = _proclist_skipmarker(var)) != NULL; \
589 (var) = LIST_NEXT(var, p_list))
590
591#ifdef KSTACK_CHECK_MAGIC
592void kstack_setup_magic(const struct lwp *);
593void kstack_check_magic(const struct lwp *);
594#else
595#define kstack_setup_magic(x)
596#define kstack_check_magic(x)
597#endif
598
599extern struct emul emul_netbsd;
600
601#endif /* _KERNEL */
602
603/*
604 * Kernel stack parameters.
605 *
606 * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack,
607 * excluding red-zone.
608 *
609 * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone.
610 *
611 * if <machine/proc.h> provides the MD definition, it will be used.
612 */
613#ifndef KSTACK_LOWEST_ADDR
614#define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1))
615#endif
616#ifndef KSTACK_SIZE
617#define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb)))
618#endif
619
620#endif /* _KMEMUSER || _KERNEL */
621
622#endif /* !_SYS_PROC_H_ */
623