xref: /illumos-gate/usr/src/uts/common/sys/proc.h (revision 2570281c)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Copyright 2021 Joyent, Inc.
25  * Copyright 2021 Oxide Computer Company
26  */
27 
28 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
29 /*	  All Rights Reserved	*/
30 
31 #ifndef _SYS_PROC_H
32 #define	_SYS_PROC_H
33 
34 #include <sys/time.h>
35 #include <sys/thread.h>
36 #include <sys/cred.h>
37 #include <sys/user.h>
38 #include <sys/watchpoint.h>
39 #include <sys/timer.h>
40 #if defined(__x86)
41 #include <sys/tss.h>
42 #include <sys/segments.h>
43 #endif
44 #include <sys/utrap.h>
45 #include <sys/model.h>
46 #include <sys/refstr.h>
47 #include <sys/avl.h>
48 #include <sys/rctl.h>
49 #include <sys/list.h>
50 #include <sys/avl.h>
51 #include <sys/door_impl.h>
52 #include <sys/signalfd.h>
53 #include <sys/secflags.h>
54 
55 #ifdef	__cplusplus
56 extern "C" {
57 #endif
58 
59 /*
60  * Profile arguments.
61  */
62 struct prof {
63 	void		*pr_base;	/* buffer base */
64 	uintptr_t	pr_off;		/* pc offset */
65 	size_t		pr_size;	/* buffer size */
66 	uint32_t	pr_scale;	/* pc scaling */
67 	long		pr_samples;	/* sample count */
68 };
69 
70 /*
71  * An lwp directory entry.
72  * If le_thread != NULL, this is an active lwp.
73  * If le_thread == NULL, this is an unreaped zombie lwp.
74  */
75 typedef struct lwpent {
76 	kthread_t	*le_thread;	/* the active lwp, NULL if zombie */
77 	id_t		le_lwpid;	/* its lwpid (t->t_tid) */
78 	uint16_t	le_waiters;	/* total number of lwp_wait()ers */
79 	uint16_t	le_dwaiters;	/* number that are daemons */
80 	clock_t		le_start;	/* start time of this lwp */
81 	struct vnode	*le_trace;	/* pointer to /proc lwp vnode */
82 } lwpent_t;
83 
84 typedef struct pctxop {
85 	void	(*save_op)(void *);	/* function to invoke to save ctx */
86 	void	(*restore_op)(void *);	/* function to invoke to restore ctx */
87 	void	(*fork_op)(void *, void *); /* invoke to fork context */
88 	void	(*exit_op)(void *);	/* invoked during process exit */
89 	void	(*free_op)(void *, int); /* function which frees the context */
90 	void	*arg;			/* argument to above functions */
91 	struct pctxop *next;		/* next pcontext ops */
92 } pctxop_t;
93 
94 /*
95  * Elements of the lwp directory, p->p_lwpdir[].
96  *
97  * We allocate lwp directory entries separately from lwp directory
98  * elements because the lwp directory must be allocated as an array.
99  * The number of lwps can grow quite large and we want to keep the
100  * size of the kmem_alloc()d directory as small as possible.
101  *
102  * If ld_entry == NULL, the entry is free and is on the free list,
103  * p->p_lwpfree, linked through ld_next.  If ld_entry != NULL, the
104  * entry is used and ld_next is the thread-id hash link pointer.
105  */
106 typedef struct lwpdir {
107 	struct lwpdir	*ld_next;	/* hash chain or free list */
108 	struct lwpent	*ld_entry;	/* lwp directory entry */
109 } lwpdir_t;
110 
111 /*
112  * Element of the p_tidhash thread-id (lwpid) hash table.
113  */
114 typedef struct tidhash {
115 	kmutex_t	th_lock;
116 	lwpdir_t	*th_list;
117 } tidhash_t;
118 
119 /*
120  * Retired tidhash hash tables.
121  */
122 typedef struct ret_tidhash {
123 	struct ret_tidhash	*rth_next;
124 	tidhash_t		*rth_tidhash;
125 	uint_t			rth_tidhash_sz;
126 } ret_tidhash_t;
127 
128 struct pool;
129 struct task;
130 struct zone;
131 struct brand;
132 struct corectl_path;
133 struct corectl_content;
134 
135 /*
136  * One structure allocated per active process.  It contains all
137  * data needed about the process while the process may be swapped
138  * out.  Other per-process data (user.h) is also inside the proc structure.
139  * Lightweight-process data (lwp.h) and the kernel stack may be swapped out.
140  */
141 typedef struct	proc {
142 	/*
143 	 * Fields requiring no explicit locking
144 	 */
145 	struct	vnode *p_exec;		/* pointer to a.out vnode */
146 	struct	as *p_as;		/* process address space pointer */
147 	struct	plock *p_lockp;		/* ptr to proc struct's mutex lock */
148 	kmutex_t p_crlock;		/* lock for p_cred */
149 	struct	cred	*p_cred;	/* process credentials */
150 	/*
151 	 * Fields protected by pidlock
152 	 */
153 	int	p_swapcnt;		/* number of swapped out lwps */
154 	char	p_stat;			/* status of process */
155 	char	p_wcode;		/* current wait code */
156 	ushort_t p_pidflag;		/* flags protected only by pidlock */
157 	int	p_wdata;		/* current wait return value */
158 	pid_t	p_ppid;			/* process id of parent */
159 	struct	proc	*p_link;	/* forward link */
160 	struct	proc	*p_parent;	/* ptr to parent process */
161 	struct	proc	*p_child;	/* ptr to first child process */
162 	struct	proc	*p_sibling;	/* ptr to next sibling proc on chain */
163 	struct	proc	*p_psibling;	/* ptr to prev sibling proc on chain */
164 	struct	proc	*p_sibling_ns;	/* prt to siblings with new state */
165 	struct	proc	*p_child_ns;	/* prt to children with new state */
166 	struct	proc	*p_next;	/* active chain link next */
167 	struct	proc	*p_prev;	/* active chain link prev */
168 	struct	proc	*p_nextofkin;	/* gets accounting info at exit */
169 	struct	proc	*p_orphan;
170 	struct	proc	*p_nextorph;
171 	struct	proc	*p_pglink;	/* process group hash chain link next */
172 	struct	proc	*p_ppglink;	/* process group hash chain link prev */
173 	struct	sess	*p_sessp;	/* session information */
174 	struct	pid	*p_pidp;	/* process ID info */
175 	struct	pid	*p_pgidp;	/* process group ID info */
176 	/*
177 	 * Fields protected by p_lock
178 	 */
179 	kcondvar_t p_cv;		/* proc struct's condition variable */
180 	kcondvar_t p_flag_cv;
181 	kcondvar_t p_lwpexit;		/* waiting for some lwp to exit */
182 	kcondvar_t p_holdlwps;		/* process is waiting for its lwps */
183 					/* to to be held.  */
184 	uint_t	p_proc_flag;		/* /proc-related flags */
185 	uint_t	p_flag;			/* protected while set. */
186 					/* flags defined below */
187 	clock_t	p_utime;		/* user time, this process */
188 	clock_t	p_stime;		/* system time, this process */
189 	clock_t	p_cutime;		/* sum of children's user time */
190 	clock_t	p_cstime;		/* sum of children's system time */
191 	avl_tree_t *p_segacct;		/* System V shared segment list */
192 	avl_tree_t *p_semacct;		/* System V semaphore undo list */
193 	caddr_t	p_bssbase;		/* base addr of last bss below heap */
194 	caddr_t	p_brkbase;		/* base addr of heap */
195 	size_t	p_brksize;		/* heap size in bytes */
196 	uint_t	p_brkpageszc;		/* preferred heap max page size code */
197 	/*
198 	 * Per process signal stuff.
199 	 */
200 	k_sigset_t p_sig;		/* signals pending to this process */
201 	k_sigset_t p_extsig;		/* signals sent from another contract */
202 	k_sigset_t p_ignore;		/* ignore when generated */
203 	k_sigset_t p_siginfo;		/* gets signal info with signal */
204 	void *p_sigfd;			/* signalfd support state */
205 	struct sigqueue *p_sigqueue;	/* queued siginfo structures */
206 	struct sigqhdr *p_sigqhdr;	/* hdr to sigqueue structure pool */
207 	struct sigqhdr *p_signhdr;	/* hdr to signotify structure pool */
208 	uchar_t	p_stopsig;		/* jobcontrol stop signal */
209 
210 	/*
211 	 * Special per-process flag when set will fix misaligned memory
212 	 * references.
213 	 */
214 	char    p_fixalignment;
215 
216 	/*
217 	 * Per process lwp and kernel thread stuff
218 	 */
219 	id_t	p_lwpid;		/* most recently allocated lwpid */
220 	int	p_lwpcnt;		/* number of lwps in this process */
221 	int	p_lwprcnt;		/* number of not stopped lwps */
222 	int	p_lwpdaemon;		/* number of TP_DAEMON lwps */
223 	int	p_lwpwait;		/* number of lwps in lwp_wait() */
224 	int	p_lwpdwait;		/* number of daemons in lwp_wait() */
225 	int	p_zombcnt;		/* number of zombie lwps */
226 	kthread_t *p_tlist;		/* circular list of threads */
227 	lwpdir_t *p_lwpdir;		/* thread (lwp) directory */
228 	lwpdir_t *p_lwpfree;		/* p_lwpdir free list */
229 	tidhash_t *p_tidhash;		/* tid (lwpid) lookup hash table */
230 	uint_t	p_lwpdir_sz;		/* number of p_lwpdir[] entries */
231 	uint_t	p_tidhash_sz;		/* number of p_tidhash[] entries */
232 	ret_tidhash_t *p_ret_tidhash;	/* retired tidhash hash tables */
233 	uint64_t p_lgrpset;		/* unprotected hint of set of lgrps */
234 					/* on which process has threads */
235 	volatile lgrp_id_t  p_t1_lgrpid; /* main's thread lgroup id */
236 	volatile lgrp_id_t  p_tr_lgrpid; /* text replica's lgroup id */
237 #if defined(_LP64)
238 	uintptr_t  p_lgrpres2;		/* reserved for lgrp migration */
239 #endif
240 	/*
241 	 * /proc (process filesystem) debugger interface stuff.
242 	 */
243 	k_sigset_t p_sigmask;		/* mask of traced signals (/proc) */
244 	k_fltset_t p_fltmask;		/* mask of traced faults (/proc) */
245 	struct vnode *p_trace;		/* pointer to primary /proc vnode */
246 	struct vnode *p_plist;		/* list of /proc vnodes for process */
247 	kthread_t *p_agenttp;		/* thread ptr for /proc agent lwp */
248 	avl_tree_t p_warea;		/* list of watched areas */
249 	avl_tree_t p_wpage;		/* remembered watched pages (vfork) */
250 	watched_page_t *p_wprot;	/* pages that need to have prot set */
251 	int	p_mapcnt;		/* number of active pr_mappage()s */
252 	kmutex_t p_maplock;		/* lock for pr_mappage() */
253 	struct	proc  *p_rlink;		/* linked list for server */
254 	kcondvar_t p_srwchan_cv;
255 
256 	/*
257 	 * Stack sizing and guard information.
258 	 * Generally protected by as_rangelock()
259 	 */
260 	size_t		p_stksize;	/* process stack size in bytes */
261 	uint_t		p_stkpageszc;	/* preferred stack max page size code */
262 	uintptr_t	p_stkg_start;	/* start of stack guard */
263 	uintptr_t	p_stkg_end;	/* end of stack guard */
264 
265 	/*
266 	 * Microstate accounting, resource usage, and real-time profiling
267 	 */
268 	hrtime_t p_mstart;		/* hi-res process start time */
269 	hrtime_t p_mterm;		/* hi-res process termination time */
270 	hrtime_t p_mlreal;		/* elapsed time sum over defunct lwps */
271 	hrtime_t p_acct[NMSTATES];	/* microstate sum over defunct lwps */
272 	hrtime_t p_cacct[NMSTATES];	/* microstate sum over child procs */
273 	struct lrusage p_ru;		/* lrusage sum over defunct lwps */
274 	struct lrusage p_cru;		/* lrusage sum over child procs */
275 	struct itimerval p_rprof_timer; /* ITIMER_REALPROF interval timer */
276 	uintptr_t p_rprof_cyclic;	/* ITIMER_REALPROF cyclic */
277 	uint_t	p_defunct;		/* number of defunct lwps */
278 	/*
279 	 * profiling. A lock is used in the event of multiple lwp's
280 	 * using the same profiling base/size.
281 	 */
282 	kmutex_t p_pflock;		/* protects user profile arguments */
283 	struct prof p_prof;		/* profile arguments */
284 
285 	/*
286 	 * Doors.
287 	 */
288 	door_pool_t		p_server_threads; /* common thread pool */
289 	struct door_node	*p_door_list;	/* active doors */
290 	struct door_node	*p_unref_list;
291 	kcondvar_t		p_unref_cv;
292 	char			p_unref_thread;	/* unref thread created */
293 
294 	/*
295 	 * Solaris Audit
296 	 */
297 	struct p_audit_data	*p_audit_data; /* per process audit structure */
298 
299 	pctxop_t	*p_pctx;
300 
301 #if defined(__x86)
302 	/*
303 	 * LDT support.
304 	 */
305 	kmutex_t	p_ldtlock;	/* protects the following fields */
306 	user_desc_t	*p_ldt;		/* Pointer to private LDT */
307 	uint64_t	p_unused1;	/* no longer used */
308 	uint64_t	p_unused2;	/* no longer used */
309 	ushort_t	p_ldtlimit;	/* highest selector used */
310 #endif
311 	size_t p_swrss;			/* resident set size before last swap */
312 	struct aio	*p_aio;		/* pointer to async I/O struct */
313 	struct itimer	**p_itimer;	/* interval timers */
314 	uint_t		p_itimer_sz;	/* max allocated interval timers */
315 	timeout_id_t	p_alarmid;	/* alarm's timeout id */
316 	caddr_t		p_usrstack;	/* top of the process stack */
317 	uint_t		p_stkprot;	/* stack memory protection */
318 	uint_t		p_datprot;	/* data memory protection */
319 	model_t		p_model;	/* data model determined at exec time */
320 	struct lwpchan_data *p_lcp;	/* lwpchan cache */
321 	kmutex_t	p_lcp_lock;	/* protects assignments to p_lcp */
322 	utrap_handler_t	*p_utraps;	/* pointer to user trap handlers */
323 	struct corectl_path	*p_corefile;	/* pattern for core file */
324 	struct task	*p_task;	/* our containing task */
325 	struct proc	*p_taskprev;	/* ptr to previous process in task */
326 	struct proc	*p_tasknext;	/* ptr to next process in task */
327 	kmutex_t	p_sc_lock;	/* protects p_pagep */
328 	struct sc_page_ctl *p_pagep;	/* list of process's shared pages */
329 	struct rctl_set	*p_rctls;	/* resource controls for this process */
330 	rlim64_t	p_stk_ctl;	/* currently enforced stack size */
331 	rlim64_t	p_fsz_ctl;	/* currently enforced file size */
332 	rlim64_t	p_vmem_ctl;	/* currently enforced addr-space size */
333 	rlim64_t	p_fno_ctl;	/* currently enforced file-desc limit */
334 	pid_t		p_ancpid;	/* ancestor pid, used by exacct */
335 	struct itimerval p_realitimer;	/* real interval timer */
336 	timeout_id_t	p_itimerid;	/* real interval timer's timeout id */
337 	struct corectl_content *p_content;	/* content of core file */
338 
339 	avl_tree_t	p_ct_held;	/* held contracts */
340 	struct ct_equeue **p_ct_equeue;	/* process-type event queues */
341 
342 	struct cont_process *p_ct_process; /* process contract */
343 	list_node_t	p_ct_member;	/* process contract membership */
344 	sigqueue_t	*p_killsqp;	/* sigqueue pointer for SIGKILL */
345 
346 	int		p_dtrace_probes; /* are there probes for this proc? */
347 	uint64_t	p_dtrace_count;	/* number of DTrace tracepoints */
348 					/* (protected by P_PR_LOCK) */
349 	void		*p_dtrace_helpers; /* DTrace helpers, if any */
350 	struct pool	*p_pool;	/* pointer to containing pool */
351 	kcondvar_t	p_poolcv;	/* synchronization with pools */
352 	uint_t		p_poolcnt;	/* # threads inside pool barrier */
353 	uint_t		p_poolflag;	/* pool-related flags (see below) */
354 	uint_t		p_upanicflag;	/* upanic-related flags (see below) */
355 	void		*p_upanic;	/* optional upanic data */
356 	uintptr_t	p_portcnt;	/* event ports counter */
357 	struct zone	*p_zone;	/* zone in which process lives */
358 	struct vnode	*p_execdir;	/* directory that p_exec came from */
359 	struct brand	*p_brand;	/* process's brand  */
360 	void		*p_brand_data;	/* per-process brand state */
361 	psecflags_t	p_secflags;	/* per-process security flags */
362 
363 	/* additional lock to protect p_sessp (but not its contents) */
364 	kmutex_t p_splock;
365 	rctl_qty_t	p_locked_mem;	/* locked memory charged to proc */
366 					/* protected by p_lock */
367 	rctl_qty_t	p_crypto_mem;	/* /dev/crypto memory charged to proc */
368 					/* protected by p_lock */
369 	clock_t	p_ttime;		/* buffered task time */
370 
371 	/*
372 	 * The user structure
373 	 */
374 	struct user p_user;		/* (see sys/user.h) */
375 } proc_t;
376 
377 #define	PROC_T				/* headers relying on proc_t are OK */
378 
379 #ifdef _KERNEL
380 
381 /* active process chain */
382 
383 extern proc_t *practive;
384 
385 /* Well known processes */
386 
387 extern proc_t *proc_sched;		/* memory scheduler */
388 extern proc_t *proc_init;		/* init */
389 extern proc_t *proc_pageout;		/* pageout daemon */
390 extern proc_t *proc_fsflush;		/* filesystem sync-er */
391 
392 #endif /* _KERNEL */
393 
394 /*
395  * Stuff to keep track of the number of processes each uid has.
396  * It is tracked on a per-zone basis; that is, if users in different
397  * zones have the same uid, they are tracked separately.
398  *
399  * A structure is allocated when a new <uid,zoneid> pair shows up
400  * There is a hash to find each structure.
401  */
402 struct	upcount	{
403 	struct	upcount	*up_next;
404 	uid_t		up_uid;
405 	zoneid_t	up_zoneid;
406 	uint_t		up_count;
407 };
408 
409 /* process ID info */
410 
411 struct pid {
412 	unsigned int pid_prinactive :1;
413 	unsigned int pid_pgorphaned :1;
414 	unsigned int pid_padding :6;	/* used to be pid_ref, now an int */
415 	unsigned int pid_prslot :24;
416 	pid_t pid_id;
417 	struct proc *pid_pglink;
418 	struct proc *pid_pgtail;
419 	struct pid *pid_link;
420 	uint_t pid_ref;
421 };
422 
423 #define	p_pgrp p_pgidp->pid_id
424 #define	p_pid  p_pidp->pid_id
425 #define	p_slot p_pidp->pid_prslot
426 #define	p_detached p_pgidp->pid_pgorphaned
427 
428 #define	PID_HOLD(pidp)	ASSERT(MUTEX_HELD(&pidlock)); \
429 			++(pidp)->pid_ref;
430 #define	PID_RELE(pidp)	ASSERT(MUTEX_HELD(&pidlock)); \
431 			(pidp)->pid_ref > 1 ? \
432 				--(pidp)->pid_ref : pid_rele(pidp);
433 
434 /*
435  * Structure containing persistent process lock.  The structure and
436  * macro allow "mutex_enter(&p->p_lock)" to continue working.
437  */
438 struct plock {
439 	kmutex_t pl_lock;
440 };
441 #define	p_lock	p_lockp->pl_lock
442 
443 #ifdef _KERNEL
444 extern proc_t p0;		/* process 0 */
445 extern struct plock p0lock;	/* p0's plock */
446 extern struct pid pid0;		/* p0's pid */
447 
448 /* pid_allocate() flags */
449 #define	PID_ALLOC_PROC	0x0001	/* assign a /proc slot as well */
450 
451 #endif /* _KERNEL */
452 
453 /* stat codes */
454 
455 #define	SSLEEP	1		/* awaiting an event */
456 #define	SRUN	2		/* runnable */
457 #define	SZOMB	3		/* process terminated but not waited for */
458 #define	SSTOP	4		/* process stopped by debugger */
459 #define	SIDL	5		/* intermediate state in process creation */
460 #define	SONPROC	6		/* process is being run on a processor */
461 #define	SWAIT	7		/* process is waiting to become runnable */
462 
463 /* p_pidflag codes */
464 #define	CLDPEND		0x0001	/* have yet to post a SIGCHLD to the parent */
465 #define	CLDCONT		0x0002	/* child has notified parent of CLD_CONTINUED */
466 #define	CLDNOSIGCHLD	0x0004	/* do not post SIGCHLD when child terminates */
467 #define	CLDWAITPID	0x0008	/* only waitid(P_PID, pid) can reap the child */
468 
469 /* p_proc_flag codes -- these flags are mostly private to /proc */
470 #define	P_PR_TRACE	0x0001	/* signal, fault or syscall tracing via /proc */
471 #define	P_PR_PTRACE	0x0002	/* ptrace() compatibility mode */
472 #define	P_PR_FORK	0x0004	/* child inherits tracing flags */
473 #define	P_PR_LOCK	0x0008	/* process locked by /proc */
474 #define	P_PR_ASYNC	0x0010	/* asynchronous stopping via /proc */
475 #define	P_PR_EXEC	0x0020	/* process is in exec() */
476 #define	P_PR_BPTADJ	0x0040	/* adjust pc on breakpoint trap */
477 #define	P_PR_RUNLCL	0x0080	/* set process running on last /proc close */
478 #define	P_PR_KILLCL	0x0100	/* kill process on last /proc close */
479 
480 /*
481  * p_flag codes
482  *
483  * note that two of these flags, SMSACCT and SSYS, are exported to /proc's
484  * psinfo_t.p_flag field.  Historically, all were, but since they are
485  * implementation dependant, we only export the ones people have come to
486  * rely upon.  Hence, the bit positions of SSYS and SMSACCT should not be
487  * altered.
488  */
489 #define	SSYS	   0x00000001	/* system (resident) process */
490 #define	SEXITING   0x00000002	/* process is exiting */
491 #define	SITBUSY	   0x00000004	/* setitimer(ITIMER_REAL) in progress */
492 #define	SFORKING   0x00000008	/* tells called functions that we're forking */
493 #define	SWATCHOK   0x00000010	/* proc in acceptable state for watchpoints */
494 #define	SKILLED    0x00000100	/* SIGKILL has been posted to the process */
495 #define	SSCONT	   0x00000200	/* SIGCONT has been posted to the process */
496 #define	SZONETOP   0x00000400	/* process has no valid PPID in its zone */
497 #define	SEXTKILLED 0x00000800	/* SKILLED is from another contract */
498 #define	SUGID	   0x00002000	/* process was result of set[ug]id exec */
499 #define	SEXECED	   0x00004000	/* this process has execed */
500 #define	SJCTL	   0x00010000	/* SIGCHLD sent when children stop/continue */
501 #define	SNOWAIT    0x00020000	/* children never become zombies */
502 #define	SVFORK	   0x00040000	/* child of vfork that has not yet exec'd */
503 #define	SVFWAIT	   0x00080000	/* parent of vfork waiting for child to exec */
504 #define	SEXITLWPS  0x00100000	/* have lwps exit within the process */
505 #define	SHOLDFORK  0x00200000	/* hold lwps where they're cloneable */
506 #define	SHOLDFORK1 0x00800000	/* hold lwps in place (not cloning) */
507 #define	SCOREDUMP  0x01000000	/* process is dumping core */
508 #define	SMSACCT    0x02000000	/* process is keeping micro-state accounting */
509 #define	SLWPWRAP   0x04000000	/* process has wrapped its lwp ids */
510 #define	SAUTOLPG   0x08000000	/* kernel controls page sizes */
511 #define	SNOCD	   0x10000000	/* new creds from VSxID, do not coredump */
512 #define	SHOLDWATCH 0x20000000	/* hold lwps for watchpoint operation */
513 #define	SMSFORK	   0x40000000	/* child inherits micro-state accounting */
514 #define	SDOCORE	   0x80000000	/* process will attempt to dump core */
515 
516 /*
517  * p_poolflag codes
518  *
519  * These flags are used to synchronize with the pool subsystem to allow
520  * re-binding of processes to new pools.
521  */
522 #define	PBWAIT		0x0001  /* process should wait outside fork/exec/exit */
523 #define	PEXITED		0x0002  /* process exited and about to become zombie */
524 
525 /*
526  * p_upanicflag codes
527  */
528 #define	P_UPF_PANICKED	0x0001
529 #define	P_UPF_HAVEMSG	0x0002
530 #define	P_UPF_TRUNCMSG	0x0004
531 #define	P_UPF_INVALMSG	0x0008
532 
533 /* Macro to convert proc pointer to a user block pointer */
534 #define	PTOU(p)		(&(p)->p_user)
535 
536 #define	tracing(p, sig)	(sigismember(&(p)->p_sigmask, sig))
537 
538 /* Macro to reduce unnecessary calls to issig() */
539 
540 #define	ISSIG(t, why)	ISSIG_FAST(t, ttolwp(t), ttoproc(t), why)
541 
542 /*
543  * Fast version of ISSIG.
544  *	1. uses register pointers to lwp and proc instead of reloading them.
545  *	2. uses bit-wise OR of tests, since the usual case is that none of them
546  *	   are true, this saves orcc's and branches.
547  *	3. load the signal flags instead of using sigisempty() macro which does
548  *	   a branch to convert to boolean.
549  */
550 #define	ISSIG_FAST(t, lwp, p, why)		\
551 	(ISSIG_PENDING(t, lwp, p) && issig(why))
552 
553 #define	ISSIG_PENDING(t, lwp, p)		\
554 	((lwp)->lwp_cursig |			\
555 	    sigcheck((p), (t)) |		\
556 	    (p)->p_stopsig |			\
557 	    (t)->t_dtrace_stop |		\
558 	    (t)->t_dtrace_sig |			\
559 	    ((t)->t_proc_flag & (TP_PRSTOP|TP_HOLDLWP|TP_CHKPT|TP_PAUSE)) | \
560 	    ((p)->p_flag & (SEXITLWPS|SKILLED|SHOLDFORK1|SHOLDWATCH)))
561 
562 #define	ISSTOP(sig)	 (u.u_signal[sig-1] == SIG_DFL && \
563 				sigismember(&stopdefault, sig))
564 
565 #define	ISHOLD(p)	((p)->p_flag & SHOLDFORK)
566 
567 #define	MUSTRETURN(p, t)	(ISHOLD(p) | (t)->t_activefd.a_stale)
568 
569 /*
570  * Determine if there are any watchpoints active in the process.
571  */
572 #define	pr_watch_active(p)	(avl_numnodes(&(p)->p_warea) != 0)
573 
574 /* Reasons for calling issig() */
575 
576 #define	FORREAL		0	/* Usual side-effects */
577 #define	JUSTLOOKING	1	/* Don't stop the process */
578 
579 /* 'what' values for stop(PR_SUSPENDED, what) */
580 #define	SUSPEND_NORMAL	0
581 #define	SUSPEND_PAUSE	1
582 
583 /* pseudo-flag to lwp_create() */
584 #define	NOCLASS	(-1)
585 
586 /* unused scheduling class ID */
587 #define	CLASS_UNUSED	(-2)
588 
589 /* LWP stats updated via lwp_stats_update() */
590 typedef enum {
591 	LWP_STAT_INBLK,
592 	LWP_STAT_OUBLK,
593 	LWP_STAT_MSGRCV,
594 	LWP_STAT_MSGSND
595 } lwp_stat_id_t;
596 
597 typedef struct prkillinfo {
598 	int32_t prk_error;		/* errno */
599 	int32_t prk_pad;		/* pad */
600 	siginfo_t prk_info;		/* siginfo of killing signal */
601 } prkillinfo_t;
602 
603 #ifdef _KERNEL
604 
605 /* user profiling functions */
606 
607 extern void profil_tick(uintptr_t);
608 
609 /* process management functions */
610 
611 extern int newproc(void (*)(), caddr_t, id_t, int, struct contract **, pid_t);
612 extern void vfwait(pid_t);
613 extern void proc_detach(proc_t *);
614 extern void freeproc(proc_t *);
615 extern void setrun(kthread_t *);
616 extern void setrun_locked(kthread_t *);
617 extern void exit(int, int);
618 extern int proc_exit(int, int);
619 extern void proc_is_exiting(proc_t *);
620 extern void relvm(void);
621 extern void add_ns(proc_t *, proc_t *);
622 extern void delete_ns(proc_t *, proc_t *);
623 extern void upcount_inc(uid_t, zoneid_t);
624 extern void upcount_dec(uid_t, zoneid_t);
625 extern int upcount_get(uid_t, zoneid_t);
626 #if defined(__x86)
627 extern selector_t setup_thrptr(proc_t *, uintptr_t);
628 extern void deferred_singlestep_trap(caddr_t);
629 #endif
630 
631 extern void sigcld(proc_t *, sigqueue_t *);
632 extern void sigcld_delete(k_siginfo_t *);
633 extern void sigcld_repost(void);
634 extern int fsig(k_sigset_t *, kthread_t *);
635 extern void psig(void);
636 extern void stop(int, int);
637 extern int stop_on_fault(uint_t, k_siginfo_t *);
638 extern int issig(int);
639 extern int jobstopped(proc_t *);
640 extern void psignal(proc_t *, int);
641 extern void tsignal(kthread_t *, int);
642 extern void sigtoproc(proc_t *, kthread_t *, int);
643 extern void trapsig(k_siginfo_t *, int);
644 extern void realsigprof(int, int, int);
645 extern int eat_signal(kthread_t *, int);
646 extern int signal_is_blocked(kthread_t *, int);
647 extern int sigcheck(proc_t *, kthread_t *);
648 extern void sigdefault(proc_t *);
649 
650 extern void pid_setmin(void);
651 extern pid_t pid_allocate(proc_t *, pid_t, int);
652 extern int pid_rele(struct pid *);
653 extern void pid_exit(proc_t *, struct task *);
654 extern void proc_entry_free(struct pid *);
655 extern proc_t *prfind(pid_t);
656 extern proc_t *prfind_zone(pid_t, zoneid_t);
657 extern proc_t *pgfind(pid_t);
658 extern proc_t *pgfind_zone(pid_t, zoneid_t);
659 extern proc_t *sprlock(pid_t);
660 extern proc_t *sprlock_zone(pid_t, zoneid_t);
661 extern int sprtrylock_proc(proc_t *);
662 extern void sprwaitlock_proc(proc_t *);
663 extern void sprlock_proc(proc_t *);
664 extern void sprunlock(proc_t *);
665 extern void pid_init(void);
666 extern proc_t *pid_entry(int);
667 extern int pid_slot(proc_t *);
668 extern void signal(pid_t, int);
669 extern void prsignal(struct pid *, int);
670 extern int uread(proc_t *, void *, size_t, uintptr_t);
671 extern int uwrite(proc_t *, void *, size_t, uintptr_t);
672 
673 extern void pgsignal(struct pid *, int);
674 extern void pgjoin(proc_t *, struct pid *);
675 extern void pgcreate(proc_t *);
676 extern void pgexit(proc_t *);
677 extern void pgdetach(proc_t *);
678 extern int pgmembers(pid_t);
679 
680 extern	void	init_mstate(kthread_t *, int);
681 extern	int	new_mstate(kthread_t *, int);
682 extern	void	restore_mstate(kthread_t *);
683 extern	void	term_mstate(kthread_t *);
684 extern	void	estimate_msacct(kthread_t *, hrtime_t);
685 extern	void	disable_msacct(proc_t *);
686 extern	hrtime_t mstate_aggr_state(proc_t *, int);
687 extern	hrtime_t mstate_thread_onproc_time(kthread_t *);
688 extern	void	mstate_systhread_times(kthread_t *, hrtime_t *, hrtime_t *);
689 extern	void	syscall_mstate(int, int);
690 
691 extern	uint_t	cpu_update_pct(kthread_t *, hrtime_t);
692 
693 extern void	set_proc_pre_sys(proc_t *p);
694 extern void	set_proc_post_sys(proc_t *p);
695 extern void	set_proc_sys(proc_t *p);
696 extern void	set_proc_ast(proc_t *p);
697 extern void	set_all_proc_sys(void);
698 extern void	set_all_zone_usr_proc_sys(zoneid_t);
699 
700 /* thread function prototypes */
701 
702 extern	kthread_t	*thread_create(
703 	caddr_t		stk,
704 	size_t		stksize,
705 	void		(*proc)(),
706 	void		*arg,
707 	size_t		len,
708 	proc_t		*pp,
709 	int		state,
710 	pri_t		pri);
711 extern	void	thread_exit(void) __NORETURN;
712 extern	void	thread_free(kthread_t *);
713 extern	void	thread_rele(kthread_t *);
714 extern	void	thread_join(kt_did_t);
715 extern	int	reaper(void);
716 
717 #define	CTXOP_TPL_REV	1
718 
719 struct ctxop_template {
720 	uint32_t	ct_rev;
721 	uint32_t	ct_pad;
722 	void		(*ct_save)(void *);
723 	void		(*ct_restore)(void *);
724 	void		(*ct_fork)(void *, void *);
725 	void		(*ct_lwp_create)(void *, void *);
726 	void		(*ct_exit)(void *);
727 	void		(*ct_free)(void *, int);
728 };
729 
730 extern struct ctxop *ctxop_allocate(const struct ctxop_template *, void *);
731 extern void ctxop_free(struct ctxop *);
732 extern void ctxop_attach(kthread_t *, struct ctxop *);
733 extern void ctxop_detach(kthread_t *, struct ctxop *);
734 extern void ctxop_install(kthread_t *, const struct ctxop_template *, void *);
735 extern int ctxop_remove(kthread_t *, const struct ctxop_template *, void *);
736 
737 extern	void	savectx(kthread_t *);
738 extern	void	restorectx(kthread_t *);
739 extern	void	forkctx(kthread_t *, kthread_t *);
740 extern	void	lwp_createctx(kthread_t *, kthread_t *);
741 extern	void	exitctx(kthread_t *);
742 extern	void	freectx(kthread_t *, int);
743 extern	void	installpctx(proc_t *, void *, void (*)(), void (*)(),
744     void (*)(), void (*)(), void (*)());
745 extern	int	removepctx(proc_t *, void *, void (*)(), void (*)(),
746     void (*)(), void (*)(), void (*)());
747 extern	void	savepctx(proc_t *);
748 extern	void	restorepctx(proc_t *);
749 extern	void	forkpctx(proc_t *, proc_t *);
750 extern	void	exitpctx(proc_t *);
751 extern	void	freepctx(proc_t *, int);
752 extern	kthread_t *thread_unpin(void);
753 extern	void	thread_init(void);
754 extern	void	thread_load(kthread_t *, void (*)(), caddr_t, size_t);
755 
756 extern	void	tsd_create(uint_t *, void (*)(void *));
757 extern	void	tsd_destroy(uint_t *);
758 extern	void	*tsd_getcreate(uint_t *, void (*)(void *), void *(*)(void));
759 extern	void	*tsd_get(uint_t);
760 extern	int	tsd_set(uint_t, void *);
761 extern	void	tsd_exit(void);
762 extern	void	*tsd_agent_get(kthread_t *, uint_t);
763 extern	int	tsd_agent_set(kthread_t *, uint_t, void *);
764 
765 /* lwp function prototypes */
766 
767 extern kthread_t *lwp_kernel_create(proc_t *, void (*)(), void *, int, pri_t);
768 extern	klwp_t		*lwp_create(
769 	void		(*proc)(),
770 	caddr_t		arg,
771 	size_t		len,
772 	proc_t		*p,
773 	int		state,
774 	int		pri,
775 	const k_sigset_t *smask,
776 	int		cid,
777 	id_t		lwpid);
778 extern	kthread_t *idtot(proc_t *, id_t);
779 extern	void	lwp_hash_in(proc_t *, lwpent_t *, tidhash_t *, uint_t, int);
780 extern	void	lwp_hash_out(proc_t *, id_t);
781 extern	lwpdir_t *lwp_hash_lookup(proc_t *, id_t);
782 extern	lwpdir_t *lwp_hash_lookup_and_lock(proc_t *, id_t, kmutex_t **);
783 extern	void	lwp_create_done(kthread_t *);
784 extern	void	lwp_exit(void);
785 extern	void	lwp_pcb_exit(void);
786 extern	void	lwp_cleanup(void);
787 extern	int	lwp_suspend(kthread_t *);
788 extern	void	lwp_continue(kthread_t *);
789 extern	void	holdlwp(void);
790 extern	void	stoplwp(void);
791 extern	int	holdlwps(int);
792 extern	int	holdwatch(void);
793 extern	void	pokelwps(proc_t *);
794 extern	void	continuelwps(proc_t *);
795 extern	int	exitlwps(int);
796 extern	void	lwp_ctmpl_copy(klwp_t *, klwp_t *);
797 extern	void	lwp_ctmpl_clear(klwp_t *);
798 extern	klwp_t	*forklwp(klwp_t *, proc_t *, id_t);
799 extern	void	lwp_load(klwp_t *, gregset_t, uintptr_t);
800 extern	void	lwp_setrval(klwp_t *, int, int);
801 extern	void	lwp_forkregs(klwp_t *, klwp_t *);
802 extern	void	lwp_freeregs(klwp_t *, int);
803 extern	caddr_t	lwp_stk_init(klwp_t *, caddr_t);
804 extern	void	lwp_stk_cache_init(void);
805 extern	void	lwp_stk_fini(klwp_t *);
806 extern	void	lwp_fp_init(klwp_t *);
807 extern	void	lwp_installctx(klwp_t *);
808 extern	void	lwp_rtt(void);
809 extern	void	lwp_rtt_initial(void);
810 extern	int	lwp_setprivate(klwp_t *, int, uintptr_t);
811 extern	void	lwp_stat_update(lwp_stat_id_t, long);
812 extern	void	lwp_attach_brand_hdlrs(klwp_t *);
813 extern	void	lwp_detach_brand_hdlrs(klwp_t *);
814 
815 #if defined(__sparcv9)
816 extern	void	lwp_mmodel_newlwp(void);
817 extern	void	lwp_mmodel_shared_as(caddr_t, size_t);
818 #define	LWP_MMODEL_NEWLWP()		lwp_mmodel_newlwp()
819 #define	LWP_MMODEL_SHARED_AS(addr, sz)	lwp_mmodel_shared_as((addr), (sz))
820 #else
821 #define	LWP_MMODEL_NEWLWP()
822 #define	LWP_MMODEL_SHARED_AS(addr, sz)
823 #endif
824 
825 /*
826  * Signal queue function prototypes. Must be here due to header ordering
827  * dependencies.
828  */
829 extern void sigqfree(proc_t *);
830 extern void siginfofree(sigqueue_t *);
831 extern void sigdeq(proc_t *, kthread_t *, int, sigqueue_t **);
832 extern void sigdelq(proc_t *, kthread_t *, int);
833 extern void sigaddq(proc_t *, kthread_t *, k_siginfo_t *, int);
834 extern void sigaddqa(proc_t *, kthread_t *, sigqueue_t *);
835 extern void sigqsend(int, proc_t *, kthread_t *, sigqueue_t *);
836 extern void sigdupq(proc_t *, proc_t *);
837 extern int sigwillqueue(int, int);
838 extern sigqhdr_t *sigqhdralloc(size_t, uint_t);
839 extern sigqueue_t *sigqalloc(sigqhdr_t *);
840 extern void sigqhdrfree(sigqhdr_t *);
841 extern sigqueue_t *sigappend(k_sigset_t *, sigqueue_t *,
842 	k_sigset_t *, sigqueue_t *);
843 extern sigqueue_t *sigprepend(k_sigset_t *, sigqueue_t *,
844 	k_sigset_t *, sigqueue_t *);
845 extern void winfo(proc_t *, k_siginfo_t *, int);
846 extern int wstat(int, int);
847 extern int sendsig(int, k_siginfo_t *, void (*)());
848 #if defined(_SYSCALL32_IMPL)
849 extern int sendsig32(int, k_siginfo_t *, void (*)());
850 #endif
851 
852 #endif	/* _KERNEL */
853 
854 #ifdef	__cplusplus
855 }
856 #endif
857 
858 #endif	/* _SYS_PROC_H */
859