1 /* $NetBSD: proc.h,v 1.331 2016/06/10 23:24:33 christos 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/rwlock.h>
85 #include <sys/mqueue.h>
86 #include <sys/mutex.h>
87 #include <sys/condvar.h>
88 #include <sys/queue.h>
89 #include <sys/signalvar.h>
90 #include <sys/siginfo.h>
91 #include <sys/event.h>
92 #include <sys/specificdata.h>
93
94 #ifndef _KERNEL
95 #include <sys/time.h>
96 #include <sys/resource.h>
97 #endif
98
99 /*
100 * One structure allocated per session.
101 */
102 struct session {
103 int s_count; /* Ref cnt; pgrps in session */
104 u_int s_flags;
105 #define S_LOGIN_SET 1 /* s_login set in this session */
106 struct proc *s_leader; /* Session leader */
107 struct vnode *s_ttyvp; /* Vnode of controlling terminal */
108 struct tty *s_ttyp; /* Controlling terminal */
109 char s_login[MAXLOGNAME]; /* Setlogin() name */
110 pid_t s_sid; /* Session ID (pid of leader) */
111 };
112
113 /*
114 * One structure allocated per process group.
115 */
116 struct pgrp {
117 LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */
118 struct session *pg_session; /* Pointer to session */
119 pid_t pg_id; /* Pgrp id */
120 int pg_jobc; /*
121 * Number of processes qualifying
122 * pgrp for job control
123 */
124 };
125
126 /*
127 * Autoloadable syscall definition
128 */
129 struct sc_autoload {
130 u_int al_code;
131 const char *al_module;
132 };
133
134 /*
135 * One structure allocated per emulation.
136 */
137 struct exec_package;
138 struct ras;
139 struct kauth_cred;
140
141 struct emul {
142 const char *e_name; /* Symbolic name */
143 const char *e_path; /* Extra emulation path (NULL if none)*/
144 #ifndef __HAVE_MINIMAL_EMUL
145 int e_flags; /* Miscellaneous flags, see above */
146 /* Syscall handling function */
147 const int *e_errno; /* Errno array */
148 int e_nosys; /* Offset of the nosys() syscall */
149 int e_nsysent; /* Number of system call entries */
150 #endif
151 struct sysent *e_sysent; /* System call array */
152 const char * const *e_syscallnames; /* System call name array */
153 /* Signal sending function */
154 struct sc_autoload *e_sc_autoload; /* List of autoloadable syscalls */
155 void (*e_sendsig)(const struct ksiginfo *,
156 const sigset_t *);
157 void (*e_trapsignal)(struct lwp *, struct ksiginfo *);
158 int (*e_tracesig)(struct proc *, int);
159 char *e_sigcode; /* Start of sigcode */
160 char *e_esigcode; /* End of sigcode */
161 /* Set registers before execution */
162 struct uvm_object **e_sigobject;/* shared sigcode object */
163 void (*e_setregs)(struct lwp *, struct exec_package *,
164 vaddr_t);
165
166 /* Per-process hooks */
167 void (*e_proc_exec)(struct proc *, struct exec_package *);
168 void (*e_proc_fork)(struct proc *, struct lwp *, int);
169 void (*e_proc_exit)(struct proc *);
170 void (*e_lwp_fork)(struct lwp *, struct lwp *);
171 void (*e_lwp_exit)(struct lwp *);
172
173 #ifdef __HAVE_SYSCALL_INTERN
174 void (*e_syscall_intern)(struct proc *);
175 #else
176 void (*e_syscall)(void);
177 #endif
178 /* Emulation specific sysctl data */
179 struct sysctlnode *e_sysctlovly;
180 int (*e_fault)(struct proc *, vaddr_t, int);
181
182 vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t,
183 int);
184
185 /* Emulation-specific hook for userspace page faults */
186 int (*e_usertrap)(struct lwp *, vaddr_t, void *);
187
188 size_t e_ucsize; /* size of ucontext_t */
189 void (*e_startlwp)(void *);
190
191 /* Dtrace syscall probe */
192 void (*e_dtrace_syscall)(uint32_t, register_t,
193 const struct sysent *, const void *,
194 const register_t *, int);
195 };
196
197 /*
198 * Emulation miscelaneous flags
199 */
200 #define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */
201
202 /*
203 * Description of a process.
204 *
205 * This structure contains the information needed to manage a thread of
206 * control, known in UN*X as a process; it has references to substructures
207 * containing descriptions of things that the process uses, but may share
208 * with related processes. The process structure and the substructures
209 * are always addressible except for those marked "(PROC ONLY)" below,
210 * which might be addressible only on a processor on which the process
211 * is running.
212 *
213 * Field markings and the corresponding locks:
214 *
215 * a: p_auxlock
216 * k: ktrace_mutex
217 * l: proc_lock
218 * t: p_stmutex
219 * p: p_lock
220 * (: updated atomically
221 * :: unlocked, stable
222 */
223 struct vmspace;
224
225 struct proc {
226 LIST_ENTRY(proc) p_list; /* l: List of all processes */
227
228 kmutex_t p_auxlock; /* :: secondary, longer term lock */
229 kmutex_t *p_lock; /* :: general mutex */
230 kmutex_t p_stmutex; /* :: mutex on profiling state */
231 krwlock_t p_reflock; /* p: lock for debugger, procfs */
232 kcondvar_t p_waitcv; /* p: wait, stop CV on children */
233 kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */
234
235 /* Substructures: */
236 struct kauth_cred *p_cred; /* p: Master copy of credentials */
237 struct filedesc *p_fd; /* :: Ptr to open files structure */
238 struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */
239 struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */
240 struct plimit *p_limit; /* :: Process limits */
241 struct vmspace *p_vmspace; /* :: Address space */
242 struct sigacts *p_sigacts; /* :: Process sigactions */
243 struct aioproc *p_aio; /* p: Asynchronous I/O data */
244 u_int p_mqueue_cnt; /* (: Count of open message queues */
245 specificdata_reference
246 p_specdataref; /* subsystem proc-specific data */
247
248 int p_exitsig; /* l: signal to send to parent on exit */
249 int p_flag; /* p: PK_* flags */
250 int p_sflag; /* p: PS_* flags */
251 int p_slflag; /* s, l: PSL_* flags */
252 int p_lflag; /* l: PL_* flags */
253 int p_stflag; /* t: PST_* flags */
254 char p_stat; /* p: S* process status. */
255 char p_trace_enabled;/* p: cached by syscall_intern() */
256 char p_pad1[2]; /* unused */
257
258 pid_t p_pid; /* :: Process identifier. */
259 LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */
260 struct proc *p_pptr; /* l: Pointer to parent process. */
261 LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */
262 LIST_HEAD(, proc) p_children; /* l: List of children. */
263 LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */
264 struct ras *p_raslist; /* a: List of RAS entries */
265
266 /* The following fields are all zeroed upon creation in fork. */
267 #define p_startzero p_nlwps
268
269 int p_nlwps; /* p: Number of LWPs */
270 int p_nzlwps; /* p: Number of zombie LWPs */
271 int p_nrlwps; /* p: Number running/sleeping LWPs */
272 int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */
273 int p_ndlwps; /* p: Number of detached LWPs */
274 int p_nlwpid; /* p: Next LWP ID */
275 u_int p_nstopchild; /* l: Count of stopped/dead children */
276 u_int p_waited; /* l: parent has waited on child */
277 struct lwp *p_zomblwp; /* p: detached LWP to be reaped */
278 struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */
279
280 /* scheduling */
281 void *p_sched_info; /* p: Scheduler-specific structure */
282 fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */
283 fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */
284 unsigned int p_forktime;
285 fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */
286
287 struct proc *p_opptr; /* l: save parent during ptrace. */
288 struct ptimers *p_timers; /* Timers: real, virtual, profiling */
289 struct bintime p_rtime; /* p: real time */
290 u_quad_t p_uticks; /* t: Statclock hits in user mode */
291 u_quad_t p_sticks; /* t: Statclock hits in system mode */
292 u_quad_t p_iticks; /* t: Statclock hits processing intr */
293
294 int p_traceflag; /* k: Kernel trace points */
295 void *p_tracep; /* k: Trace private data */
296 struct vnode *p_textvp; /* :: Vnode of executable */
297
298 struct emul *p_emul; /* :: emulation information */
299 void *p_emuldata; /* :: per-proc emul data, or NULL */
300 const struct execsw *p_execsw; /* :: exec package information */
301 struct klist p_klist; /* p: knotes attached to proc */
302
303 LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */
304 sigpend_t p_sigpend; /* p: pending signals */
305 struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */
306 pid_t p_ppid; /* :: cached parent pid */
307 pid_t p_fpid; /* :: forked pid */
308 u_int p_nsems; /* Count of semaphores */
309
310 /*
311 * End area that is zeroed on creation
312 */
313 #define p_endzero p_startcopy
314
315 /*
316 * The following fields are all copied upon creation in fork.
317 */
318 #define p_startcopy p_sigctx
319
320 struct sigctx p_sigctx; /* p: Shared signal state */
321
322 u_char p_nice; /* p: Process "nice" value */
323 char p_comm[MAXCOMLEN+1];
324 /* p: basename of last exec file */
325 struct pgrp *p_pgrp; /* l: Pointer to process group */
326
327 vaddr_t p_psstrp; /* :: address of process's ps_strings */
328 u_int p_pax; /* :: PAX flags */
329
330 int p_xexit; /* p: exit code */
331 /*
332 * End area that is copied on creation
333 */
334 #define p_endcopy p_xsig
335 u_short p_xsig; /* p: stop signal */
336 u_short p_acflag; /* p: Acc. flags; see struct lwp also */
337 struct mdproc p_md; /* p: Any machine-dependent fields */
338 vaddr_t p_stackbase; /* :: ASLR randomized stack base */
339 struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */
340 };
341
342 #define p_rlimit p_limit->pl_rlimit
343 #define p_session p_pgrp->pg_session
344 #define p_pgid p_pgrp->pg_id
345
346 #endif /* _KMEMUSER || _KERNEL */
347
348 /*
349 * Status values.
350 */
351 #define SIDL 1 /* Process being created by fork */
352 #define SACTIVE 2 /* Process is not stopped */
353 #define SDYING 3 /* About to die */
354 #define SSTOP 4 /* Process debugging or suspension */
355 #define SZOMB 5 /* Awaiting collection by parent */
356 #define SDEAD 6 /* Almost a zombie */
357
358 #define P_ZOMBIE(p) \
359 ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD)
360
361 /*
362 * These flags are kept in p_flag and are protected by p_lock. Access from
363 * process context only.
364 */
365 #define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */
366 #define PK_SYSTEM 0x00000002 /* System process (kthread) */
367 #define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */
368 #define PK_SUGID 0x00000100 /* Had set id privileges since last exec */
369 #define PK_EXEC 0x00004000 /* Process called exec */
370 #define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */
371 #define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */
372 #define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */
373 #define PK_MARKER 0x80000000 /* Is a dummy marker process */
374
375 /*
376 * These flags are kept in p_sflag and are protected by p_lock. Access from
377 * process context only.
378 */
379 #define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */
380 #define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */
381 #define PS_WCORE 0x00001000 /* Process needs to dump core */
382 #define PS_WEXIT 0x00002000 /* Working on exiting */
383 #define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */
384 #define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */
385 #define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */
386 #define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */
387 #define PS_COREDUMP 0x20000000 /* Process core-dumped */
388 #define PS_CONTINUED 0x40000000 /* Process is continued */
389 #define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */
390
391 /*
392 * These flags are kept in p_slflag and are protected by the proc_lock
393 * and p_lock. Access from process context only.
394 */
395 #define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */
396 #define PSL_TRACED 0x00000800 /* Debugged process being traced */
397 #define PSL_FSTRACE 0x00010000 /* Debugger process being traced by procfs */
398 #define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */
399 #define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */
400 #define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */
401
402 /*
403 * Kept in p_stflag and protected by p_stmutex.
404 */
405 #define PST_PROFIL 0x00000020 /* Has started profiling */
406
407 /*
408 * Kept in p_lflag and protected by the proc_lock. Access
409 * from process context only.
410 */
411 #define PL_CONTROLT 0x00000002 /* Has a controlling terminal */
412 #define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */
413 #define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */
414 #define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */
415
416 #if defined(_KMEMUSER) || defined(_KERNEL)
417
418 /*
419 * Macro to compute the exit signal to be delivered.
420 */
421 #define P_EXITSIG(p) \
422 (((p)->p_slflag & (PSL_TRACED|PSL_FSTRACE)) ? SIGCHLD : p->p_exitsig)
423 /*
424 * Compute a wait(2) 16 bit exit status code
425 */
426 #define P_WAITSTATUS(p) W_EXITCODE((p)->p_xexit, ((p)->p_xsig | \
427 (((p)->p_sflag & PS_COREDUMP) ? WCOREFLAG : 0)))
428
429 LIST_HEAD(proclist, proc); /* A list of processes */
430
431 /*
432 * This structure associates a proclist with its lock.
433 */
434 struct proclist_desc {
435 struct proclist *pd_list; /* The list */
436 /*
437 * XXX Add a pointer to the proclist's lock eventually.
438 */
439 };
440
441 #ifdef _KERNEL
442
443 /*
444 * We use process IDs <= PID_MAX until there are > 16k processes.
445 * NO_PGID is used to represent "no process group" for a tty.
446 */
447 #define PID_MAX 30000
448 #define NO_PGID ((pid_t)-1)
449
450 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
451
452 /*
453 * Flags passed to fork1().
454 */
455 #define FORK_PPWAIT 0x0001 /* Block parent until child exit */
456 #define FORK_SHAREVM 0x0002 /* Share vmspace with parent */
457 #define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */
458 #define FORK_SHAREFILES 0x0008 /* Share file descriptors */
459 #define FORK_SHARESIGS 0x0010 /* Share signal actions */
460 #define FORK_NOWAIT 0x0020 /* Make init the parent of the child */
461 #define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */
462 #define FORK_SYSTEM 0x0080 /* Fork a kernel thread */
463
464 extern struct proc proc0; /* Process slot for swapper */
465 extern u_int nprocs; /* Current number of procs */
466 extern int maxproc; /* Max number of procs */
467 #define vmspace_kernel() (proc0.p_vmspace)
468
469 extern kmutex_t *proc_lock;
470 extern struct proclist allproc; /* List of all processes */
471 extern struct proclist zombproc; /* List of zombie processes */
472
473 extern struct proc *initproc; /* Process slots for init, pager */
474
475 extern const struct proclist_desc proclists[];
476
477 extern struct pool ptimer_pool; /* Memory pool for ptimers */
478
479 int proc_find_locked(struct lwp *, struct proc **, pid_t);
480 proc_t * proc_find_raw(pid_t);
481 proc_t * proc_find(pid_t); /* Find process by ID */
482 struct pgrp * pgrp_find(pid_t); /* Find process group by ID */
483
484 void procinit(void);
485 void procinit_sysctl(void);
486 int proc_enterpgrp(struct proc *, pid_t, pid_t, bool);
487 void proc_leavepgrp(struct proc *);
488 void proc_sesshold(struct session *);
489 void proc_sessrele(struct session *);
490 void fixjobc(struct proc *, struct pgrp *, int);
491
492 int tsleep(wchan_t, pri_t, const char *, int);
493 int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *);
494 void wakeup(wchan_t);
495 int kpause(const char *, bool, int, kmutex_t *);
496 void exit1(struct lwp *, int, int) __dead;
497 int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval);
498 int do_sys_wait(int *, int *, int, struct rusage *);
499 struct proc *proc_alloc(void);
500 void proc0_init(void);
501 pid_t proc_alloc_pid(struct proc *);
502 void proc_free_pid(pid_t);
503 void proc_free_mem(struct proc *);
504 void exit_lwps(struct lwp *l);
505 int fork1(struct lwp *, int, int, void *, size_t,
506 void (*)(void *), void *, register_t *, struct proc **);
507 int pgid_in_session(struct proc *, pid_t);
508 void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t,
509 void (*)(void *), void *);
510 void cpu_lwp_free(struct lwp *, int);
511 void cpu_lwp_free2(struct lwp *);
512 void cpu_spawn_return(struct lwp*);
513
514 #ifdef __HAVE_SYSCALL_INTERN
515 void syscall_intern(struct proc *);
516 #endif
517
518 void child_return(void *);
519
520 int proc_isunder(struct proc *, struct lwp *);
521 void proc_stop(struct proc *, int, int);
522 int proc_uidmatch(kauth_cred_t, kauth_cred_t);
523
524 int proc_vmspace_getref(struct proc *, struct vmspace **);
525 void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool);
526 void proc_crmod_enter(void);
527
528 int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t);
529 void proc_specific_key_delete(specificdata_key_t);
530 void proc_initspecific(struct proc *);
531 void proc_finispecific(struct proc *);
532 void * proc_getspecific(struct proc *, specificdata_key_t);
533 void proc_setspecific(struct proc *, specificdata_key_t, void *);
534 int proc_compare(const struct proc *, const struct lwp *,
535 const struct proc *, const struct lwp *);
536
537 int proclist_foreach_call(struct proclist *,
538 int (*)(struct proc *, void *arg), void *);
539
540 static inline struct proc *
_proclist_skipmarker(struct proc * p0)541 _proclist_skipmarker(struct proc *p0)
542 {
543 struct proc *p = p0;
544
545 while (p != NULL && p->p_flag & PK_MARKER)
546 p = LIST_NEXT(p, p_list);
547
548 return p;
549 }
550
551 /*
552 * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones.
553 */
554 #define PROCLIST_FOREACH(var, head) \
555 for ((var) = LIST_FIRST(head); \
556 ((var) = _proclist_skipmarker(var)) != NULL; \
557 (var) = LIST_NEXT(var, p_list))
558
559 #ifdef KSTACK_CHECK_MAGIC
560 void kstack_setup_magic(const struct lwp *);
561 void kstack_check_magic(const struct lwp *);
562 #else
563 #define kstack_setup_magic(x)
564 #define kstack_check_magic(x)
565 #endif
566
567 extern struct emul emul_netbsd;
568
569 #endif /* _KERNEL */
570
571 /*
572 * Kernel stack parameters.
573 *
574 * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack,
575 * excluding red-zone.
576 *
577 * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone.
578 *
579 * if <machine/proc.h> provides the MD definition, it will be used.
580 */
581 #ifndef KSTACK_LOWEST_ADDR
582 #define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1))
583 #endif
584 #ifndef KSTACK_SIZE
585 #define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb)))
586 #endif
587
588 #endif /* _KMEMUSER || _KERNEL */
589
590 #endif /* !_SYS_PROC_H_ */
591