xref: /titanic_41/usr/src/uts/common/sys/proc.h (revision 799d90a47c55505edaae809d753ad319c0a5c7aa)
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  */
25 
26 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
27 /*	  All Rights Reserved  	*/
28 
29 #ifndef _SYS_PROC_H
30 #define	_SYS_PROC_H
31 
32 #include <sys/time.h>
33 #include <sys/thread.h>
34 #include <sys/cred.h>
35 #include <sys/user.h>
36 #include <sys/watchpoint.h>
37 #include <sys/timer.h>
38 #if defined(__x86)
39 #include <sys/tss.h>
40 #include <sys/segments.h>
41 #endif
42 #include <sys/utrap.h>
43 #include <sys/model.h>
44 #include <sys/refstr.h>
45 #include <sys/avl.h>
46 #include <sys/rctl.h>
47 #include <sys/list.h>
48 #include <sys/avl.h>
49 #include <sys/door_impl.h>
50 
51 #ifdef	__cplusplus
52 extern "C" {
53 #endif
54 
55 /*
56  * Profile arguments.
57  */
58 struct prof {
59 	void		*pr_base;	/* buffer base */
60 	uintptr_t	pr_off;		/* pc offset */
61 	size_t		pr_size;	/* buffer size */
62 	uint32_t	pr_scale;	/* pc scaling */
63 	long		pr_samples;	/* sample count */
64 };
65 
66 /*
67  * An lwp directory entry.
68  * If le_thread != NULL, this is an active lwp.
69  * If le_thread == NULL, this is an unreaped zombie lwp.
70  */
71 typedef struct lwpent {
72 	kthread_t	*le_thread;	/* the active lwp, NULL if zombie */
73 	id_t		le_lwpid;	/* its lwpid (t->t_tid) */
74 	uint16_t	le_waiters;	/* total number of lwp_wait()ers */
75 	uint16_t	le_dwaiters;	/* number that are daemons */
76 	clock_t		le_start;	/* start time of this lwp */
77 	struct vnode	*le_trace;	/* pointer to /proc lwp vnode */
78 } lwpent_t;
79 
80 typedef struct pctxop {
81 	void	(*save_op)(void *);	/* function to invoke to save ctx */
82 	void	(*restore_op)(void *);	/* function to invoke to restore ctx */
83 	void	(*fork_op)(void *, void *); /* invoke to fork context */
84 	void	(*exit_op)(void *);	/* invoked during process exit */
85 	void	(*free_op)(void *, int); /* function which frees the context */
86 	void	*arg;			/* argument to above functions */
87 	struct pctxop *next;		/* next pcontext ops */
88 } pctxop_t;
89 
90 /*
91  * Elements of the lwp directory, p->p_lwpdir[].
92  *
93  * We allocate lwp directory entries separately from lwp directory
94  * elements because the lwp directory must be allocated as an array.
95  * The number of lwps can grow quite large and we want to keep the
96  * size of the kmem_alloc()d directory as small as possible.
97  *
98  * If ld_entry == NULL, the entry is free and is on the free list,
99  * p->p_lwpfree, linked through ld_next.  If ld_entry != NULL, the
100  * entry is used and ld_next is the thread-id hash link pointer.
101  */
102 typedef struct lwpdir {
103 	struct lwpdir	*ld_next;	/* hash chain or free list */
104 	struct lwpent	*ld_entry;	/* lwp directory entry */
105 } lwpdir_t;
106 
107 /*
108  * Element of the p_tidhash thread-id (lwpid) hash table.
109  */
110 typedef struct tidhash {
111 	kmutex_t	th_lock;
112 	lwpdir_t	*th_list;
113 } tidhash_t;
114 
115 /*
116  * Retired tidhash hash tables.
117  */
118 typedef struct ret_tidhash {
119 	struct ret_tidhash	*rth_next;
120 	tidhash_t		*rth_tidhash;
121 	uint_t			rth_tidhash_sz;
122 } ret_tidhash_t;
123 
124 struct pool;
125 struct task;
126 struct zone;
127 struct brand;
128 struct corectl_path;
129 struct corectl_content;
130 
131 /*
132  * One structure allocated per active process.  It contains all
133  * data needed about the process while the process may be swapped
134  * out.  Other per-process data (user.h) is also inside the proc structure.
135  * Lightweight-process data (lwp.h) and the kernel stack may be swapped out.
136  */
137 typedef struct	proc {
138 	/*
139 	 * Fields requiring no explicit locking
140 	 */
141 	struct	vnode *p_exec;		/* pointer to a.out vnode */
142 	struct	as *p_as;		/* process address space pointer */
143 	struct	plock *p_lockp;		/* ptr to proc struct's mutex lock */
144 	kmutex_t p_crlock;		/* lock for p_cred */
145 	struct	cred	*p_cred;	/* process credentials */
146 	/*
147 	 * Fields protected by pidlock
148 	 */
149 	int	p_swapcnt;		/* number of swapped out lwps */
150 	char	p_stat;			/* status of process */
151 	char	p_wcode;		/* current wait code */
152 	ushort_t p_pidflag;		/* flags protected only by pidlock */
153 	int 	p_wdata;		/* current wait return value */
154 	pid_t	p_ppid;			/* process id of parent */
155 	struct	proc	*p_link;	/* forward link */
156 	struct	proc	*p_parent;	/* ptr to parent process */
157 	struct	proc	*p_child;	/* ptr to first child process */
158 	struct	proc	*p_sibling;	/* ptr to next sibling proc on chain */
159 	struct	proc	*p_psibling;	/* ptr to prev sibling proc on chain */
160 	struct	proc	*p_sibling_ns;	/* prt to siblings with new state */
161 	struct	proc	*p_child_ns;	/* prt to children with new state */
162 	struct	proc 	*p_next;	/* active chain link next */
163 	struct	proc 	*p_prev;	/* active chain link prev */
164 	struct	proc 	*p_nextofkin;	/* gets accounting info at exit */
165 	struct	proc 	*p_orphan;
166 	struct	proc 	*p_nextorph;
167 	struct	proc	*p_pglink;	/* process group hash chain link next */
168 	struct	proc	*p_ppglink;	/* process group hash chain link prev */
169 	struct	sess	*p_sessp;	/* session information */
170 	struct	pid 	*p_pidp;	/* process ID info */
171 	struct	pid 	*p_pgidp;	/* process group ID info */
172 	/*
173 	 * Fields protected by p_lock
174 	 */
175 	kcondvar_t p_cv;		/* proc struct's condition variable */
176 	kcondvar_t p_flag_cv;
177 	kcondvar_t p_lwpexit;		/* waiting for some lwp to exit */
178 	kcondvar_t p_holdlwps;		/* process is waiting for its lwps */
179 					/* to to be held.  */
180 	uint_t	p_proc_flag;		/* /proc-related flags */
181 	uint_t	p_flag;			/* protected while set. */
182 					/* flags defined below */
183 	clock_t	p_utime;		/* user time, this process */
184 	clock_t	p_stime;		/* system time, this process */
185 	clock_t	p_cutime;		/* sum of children's user time */
186 	clock_t	p_cstime;		/* sum of children's system time */
187 	avl_tree_t *p_segacct;		/* System V shared segment list */
188 	avl_tree_t *p_semacct;		/* System V semaphore undo list */
189 	caddr_t	p_bssbase;		/* base addr of last bss below heap */
190 	caddr_t	p_brkbase;		/* base addr of heap */
191 	size_t	p_brksize;		/* heap size in bytes */
192 	uint_t	p_brkpageszc;		/* preferred heap max page size code */
193 	/*
194 	 * Per process signal stuff.
195 	 */
196 	k_sigset_t p_sig;		/* signals pending to this process */
197 	k_sigset_t p_extsig;		/* signals sent from another contract */
198 	k_sigset_t p_ignore;		/* ignore when generated */
199 	k_sigset_t p_siginfo;		/* gets signal info with signal */
200 	struct sigqueue *p_sigqueue;	/* queued siginfo structures */
201 	struct sigqhdr *p_sigqhdr;	/* hdr to sigqueue structure pool */
202 	struct sigqhdr *p_signhdr;	/* hdr to signotify structure pool */
203 	uchar_t	p_stopsig;		/* jobcontrol stop signal */
204 
205 	/*
206 	 * Special per-process flag when set will fix misaligned memory
207 	 * references.
208 	 */
209 	char    p_fixalignment;
210 
211 	/*
212 	 * Per process lwp and kernel thread stuff
213 	 */
214 	id_t	p_lwpid;		/* most recently allocated lwpid */
215 	int 	p_lwpcnt;		/* number of lwps in this process */
216 	int	p_lwprcnt;		/* number of not stopped lwps */
217 	int	p_lwpdaemon;		/* number of TP_DAEMON lwps */
218 	int	p_lwpwait;		/* number of lwps in lwp_wait() */
219 	int	p_lwpdwait;		/* number of daemons in lwp_wait() */
220 	int	p_zombcnt;		/* number of zombie lwps */
221 	kthread_t *p_tlist;		/* circular list of threads */
222 	lwpdir_t *p_lwpdir;		/* thread (lwp) directory */
223 	lwpdir_t *p_lwpfree;		/* p_lwpdir free list */
224 	tidhash_t *p_tidhash;		/* tid (lwpid) lookup hash table */
225 	uint_t	p_lwpdir_sz;		/* number of p_lwpdir[] entries */
226 	uint_t	p_tidhash_sz;		/* number of p_tidhash[] entries */
227 	ret_tidhash_t *p_ret_tidhash;	/* retired tidhash hash tables */
228 	uint64_t p_lgrpset;		/* unprotected hint of set of lgrps */
229 					/* on which process has threads */
230 	volatile lgrp_id_t  p_t1_lgrpid; /* main's thread lgroup id */
231 	volatile lgrp_id_t  p_tr_lgrpid; /* text replica's lgroup id */
232 #if defined(_LP64)
233 	uintptr_t  p_lgrpres2;		/* reserved for lgrp migration */
234 #endif
235 	/*
236 	 * /proc (process filesystem) debugger interface stuff.
237 	 */
238 	k_sigset_t p_sigmask;		/* mask of traced signals (/proc) */
239 	k_fltset_t p_fltmask;		/* mask of traced faults (/proc) */
240 	struct vnode *p_trace;		/* pointer to primary /proc vnode */
241 	struct vnode *p_plist;		/* list of /proc vnodes for process */
242 	kthread_t *p_agenttp;		/* thread ptr for /proc agent lwp */
243 	avl_tree_t p_warea;		/* list of watched areas */
244 	avl_tree_t p_wpage;		/* remembered watched pages (vfork) */
245 	watched_page_t *p_wprot;	/* pages that need to have prot set */
246 	int	p_mapcnt;		/* number of active pr_mappage()s */
247 	kmutex_t p_maplock;		/* lock for pr_mappage() */
248 	struct	proc  *p_rlink;		/* linked list for server */
249 	kcondvar_t p_srwchan_cv;
250 	size_t	p_stksize;		/* process stack size in bytes */
251 	uint_t	p_stkpageszc;		/* preferred stack max page size code */
252 
253 	/*
254 	 * Microstate accounting, resource usage, and real-time profiling
255 	 */
256 	hrtime_t p_mstart;		/* hi-res process start time */
257 	hrtime_t p_mterm;		/* hi-res process termination time */
258 	hrtime_t p_mlreal;		/* elapsed time sum over defunct lwps */
259 	hrtime_t p_acct[NMSTATES];	/* microstate sum over defunct lwps */
260 	hrtime_t p_cacct[NMSTATES];	/* microstate sum over child procs */
261 	struct lrusage p_ru;		/* lrusage sum over defunct lwps */
262 	struct lrusage p_cru;		/* lrusage sum over child procs */
263 	struct itimerval p_rprof_timer; /* ITIMER_REALPROF interval timer */
264 	uintptr_t p_rprof_cyclic;	/* ITIMER_REALPROF cyclic */
265 	uint_t	p_defunct;		/* number of defunct lwps */
266 	/*
267 	 * profiling. A lock is used in the event of multiple lwp's
268 	 * using the same profiling base/size.
269 	 */
270 	kmutex_t p_pflock;		/* protects user profile arguments */
271 	struct prof p_prof;		/* profile arguments */
272 
273 	/*
274 	 * Doors.
275 	 */
276 	door_pool_t		p_server_threads; /* common thread pool */
277 	struct door_node	*p_door_list;	/* active doors */
278 	struct door_node	*p_unref_list;
279 	kcondvar_t		p_unref_cv;
280 	char			p_unref_thread;	/* unref thread created */
281 
282 	/*
283 	 * Kernel probes
284 	 */
285 	uchar_t			p_tnf_flags;
286 
287 	/*
288 	 * Solaris Audit
289 	 */
290 	struct p_audit_data	*p_audit_data; /* per process audit structure */
291 
292 	pctxop_t	*p_pctx;
293 
294 #if defined(__x86)
295 	/*
296 	 * LDT support.
297 	 */
298 	kmutex_t	p_ldtlock;	/* protects the following fields */
299 	user_desc_t	*p_ldt;		/* Pointer to private LDT */
300 	system_desc_t	p_ldt_desc;	/* segment descriptor for private LDT */
301 	ushort_t	p_ldtlimit;	/* highest selector used */
302 #endif
303 	size_t p_swrss;			/* resident set size before last swap */
304 	struct aio	*p_aio;		/* pointer to async I/O struct */
305 	struct itimer	**p_itimer;	/* interval timers */
306 	timeout_id_t	p_alarmid;	/* alarm's timeout id */
307 	caddr_t		p_usrstack;	/* top of the process stack */
308 	uint_t		p_stkprot;	/* stack memory protection */
309 	uint_t		p_datprot;	/* data memory protection */
310 	model_t		p_model;	/* data model determined at exec time */
311 	struct lwpchan_data *p_lcp;	/* lwpchan cache */
312 	kmutex_t	p_lcp_lock;	/* protects assignments to p_lcp */
313 	utrap_handler_t	*p_utraps;	/* pointer to user trap handlers */
314 	struct corectl_path	*p_corefile;	/* pattern for core file */
315 	struct task	*p_task;	/* our containing task */
316 	struct proc	*p_taskprev;	/* ptr to previous process in task */
317 	struct proc	*p_tasknext;	/* ptr to next process in task */
318 	kmutex_t	p_sc_lock;	/* protects p_pagep */
319 	struct sc_page_ctl *p_pagep;	/* list of process's shared pages */
320 	struct rctl_set	*p_rctls;	/* resource controls for this process */
321 	rlim64_t	p_stk_ctl;	/* currently enforced stack size */
322 	rlim64_t	p_fsz_ctl;	/* currently enforced file size */
323 	rlim64_t	p_vmem_ctl;	/* currently enforced addr-space size */
324 	rlim64_t	p_fno_ctl;	/* currently enforced file-desc limit */
325 	pid_t		p_ancpid;	/* ancestor pid, used by exacct */
326 	struct itimerval p_realitimer;	/* real interval timer */
327 	timeout_id_t	p_itimerid;	/* real interval timer's timeout id */
328 	struct corectl_content *p_content;	/* content of core file */
329 
330 	avl_tree_t	p_ct_held;	/* held contracts */
331 	struct ct_equeue **p_ct_equeue;	/* process-type event queues */
332 
333 	struct cont_process *p_ct_process; /* process contract */
334 	list_node_t	p_ct_member;	/* process contract membership */
335 	sigqueue_t	*p_killsqp;	/* sigqueue pointer for SIGKILL */
336 
337 	int		p_dtrace_probes; /* are there probes for this proc? */
338 	uint64_t	p_dtrace_count;	/* number of DTrace tracepoints */
339 					/* (protected by P_PR_LOCK) */
340 	void		*p_dtrace_helpers; /* DTrace helpers, if any */
341 	struct pool	*p_pool;	/* pointer to containing pool */
342 	kcondvar_t	p_poolcv;	/* synchronization with pools */
343 	uint_t		p_poolcnt;	/* # threads inside pool barrier */
344 	uint_t		p_poolflag;	/* pool-related flags (see below) */
345 	uintptr_t	p_portcnt;	/* event ports counter */
346 	struct zone	*p_zone;	/* zone in which process lives */
347 	struct vnode	*p_execdir;	/* directory that p_exec came from */
348 	struct brand	*p_brand;	/* process's brand  */
349 	void		*p_brand_data;	/* per-process brand state */
350 
351 	/* additional lock to protect p_sessp (but not its contents) */
352 	kmutex_t p_splock;
353 	rctl_qty_t	p_locked_mem;	/* locked memory charged to proc */
354 					/* protected by p_lock */
355 	rctl_qty_t	p_crypto_mem;	/* /dev/crypto memory charged to proc */
356 					/* protected by p_lock */
357 	clock_t	p_ttime;		/* buffered task time */
358 
359 	/*
360 	 * The user structure
361 	 */
362 	struct user p_user;		/* (see sys/user.h) */
363 } proc_t;
364 
365 #define	PROC_T				/* headers relying on proc_t are OK */
366 
367 #ifdef _KERNEL
368 
369 /* active process chain */
370 
371 extern proc_t *practive;
372 
373 /* Well known processes */
374 
375 extern proc_t *proc_sched;		/* memory scheduler */
376 extern proc_t *proc_init;		/* init */
377 extern proc_t *proc_pageout;		/* pageout daemon */
378 extern proc_t *proc_fsflush;		/* filesystem sync-er */
379 
380 #endif /* _KERNEL */
381 
382 /*
383  * Stuff to keep track of the number of processes each uid has.
384  * It is tracked on a per-zone basis; that is, if users in different
385  * zones have the same uid, they are tracked separately.
386  *
387  * A structure is allocated when a new <uid,zoneid> pair shows up
388  * There is a hash to find each structure.
389  */
390 struct	upcount	{
391 	struct	upcount	*up_next;
392 	uid_t		up_uid;
393 	zoneid_t	up_zoneid;
394 	uint_t		up_count;
395 };
396 
397 /* process ID info */
398 
399 struct pid {
400 	unsigned int pid_prinactive :1;
401 	unsigned int pid_pgorphaned :1;
402 	unsigned int pid_padding :6;	/* used to be pid_ref, now an int */
403 	unsigned int pid_prslot :24;
404 	pid_t pid_id;
405 	struct proc *pid_pglink;
406 	struct proc *pid_pgtail;
407 	struct pid *pid_link;
408 	uint_t pid_ref;
409 };
410 
411 #define	p_pgrp p_pgidp->pid_id
412 #define	p_pid  p_pidp->pid_id
413 #define	p_slot p_pidp->pid_prslot
414 #define	p_detached p_pgidp->pid_pgorphaned
415 
416 #define	PID_HOLD(pidp)	ASSERT(MUTEX_HELD(&pidlock)); \
417 			++(pidp)->pid_ref;
418 #define	PID_RELE(pidp)	ASSERT(MUTEX_HELD(&pidlock)); \
419 			(pidp)->pid_ref > 1 ? \
420 				--(pidp)->pid_ref : pid_rele(pidp);
421 
422 /*
423  * Structure containing persistent process lock.  The structure and
424  * macro allow "mutex_enter(&p->p_lock)" to continue working.
425  */
426 struct plock {
427 	kmutex_t pl_lock;
428 };
429 #define	p_lock	p_lockp->pl_lock
430 
431 #ifdef _KERNEL
432 extern proc_t p0;		/* process 0 */
433 extern struct plock p0lock;	/* p0's plock */
434 extern struct pid pid0;		/* p0's pid */
435 
436 /* pid_allocate() flags */
437 #define	PID_ALLOC_PROC	0x0001	/* assign a /proc slot as well */
438 
439 #endif /* _KERNEL */
440 
441 /* stat codes */
442 
443 #define	SSLEEP	1		/* awaiting an event */
444 #define	SRUN	2		/* runnable */
445 #define	SZOMB	3		/* process terminated but not waited for */
446 #define	SSTOP	4		/* process stopped by debugger */
447 #define	SIDL	5		/* intermediate state in process creation */
448 #define	SONPROC	6		/* process is being run on a processor */
449 #define	SWAIT	7		/* process is waiting to become runnable */
450 
451 /* p_pidflag codes */
452 #define	CLDPEND		0x0001	/* have yet to post a SIGCHLD to the parent */
453 #define	CLDCONT		0x0002	/* child has notified parent of CLD_CONTINUED */
454 #define	CLDNOSIGCHLD	0x0004	/* do not post SIGCHLD when child terminates */
455 #define	CLDWAITPID	0x0008	/* only waitid(P_PID, pid) can reap the child */
456 
457 /* p_proc_flag codes -- these flags are mostly private to /proc */
458 #define	P_PR_TRACE	0x0001	/* signal, fault or syscall tracing via /proc */
459 #define	P_PR_PTRACE	0x0002	/* ptrace() compatibility mode */
460 #define	P_PR_FORK	0x0004	/* child inherits tracing flags */
461 #define	P_PR_LOCK	0x0008	/* process locked by /proc */
462 #define	P_PR_ASYNC	0x0010	/* asynchronous stopping via /proc */
463 #define	P_PR_EXEC	0x0020	/* process is in exec() */
464 #define	P_PR_BPTADJ	0x0040	/* adjust pc on breakpoint trap */
465 #define	P_PR_RUNLCL	0x0080	/* set process running on last /proc close */
466 #define	P_PR_KILLCL	0x0100	/* kill process on last /proc close */
467 
468 /*
469  * p_flag codes
470  *
471  * note that two of these flags, SMSACCT and SSYS, are exported to /proc's
472  * psinfo_t.p_flag field.  Historically, all were, but since they are
473  * implementation dependant, we only export the ones people have come to
474  * rely upon.  Hence, the bit positions of SSYS and SMSACCT should not be
475  * altered.
476  */
477 #define	SSYS	   0x00000001	/* system (resident) process */
478 #define	SEXITING   0x00000002	/* process is exiting */
479 #define	SITBUSY	   0x00000004	/* setitimer(ITIMER_REAL) in progress */
480 #define	SFORKING   0x00000008	/* tells called functions that we're forking */
481 #define	SWATCHOK   0x00000010	/* proc in acceptable state for watchpoints */
482 #define	SKILLED    0x00000100	/* SIGKILL has been posted to the process */
483 #define	SSCONT	   0x00000200	/* SIGCONT has been posted to the process */
484 #define	SZONETOP   0x00000400	/* process has no valid PPID in its zone */
485 #define	SEXTKILLED 0x00000800	/* SKILLED is from another contract */
486 #define	SUGID	   0x00002000	/* process was result of set[ug]id exec */
487 #define	SEXECED	   0x00004000	/* this process has execed */
488 #define	SJCTL	   0x00010000	/* SIGCHLD sent when children stop/continue */
489 #define	SNOWAIT    0x00020000	/* children never become zombies */
490 #define	SVFORK	   0x00040000	/* child of vfork that has not yet exec'd */
491 #define	SVFWAIT	   0x00080000	/* parent of vfork waiting for child to exec */
492 #define	SEXITLWPS  0x00100000	/* have lwps exit within the process */
493 #define	SHOLDFORK  0x00200000	/* hold lwps where they're cloneable */
494 #define	SHOLDFORK1 0x00800000	/* hold lwps in place (not cloning) */
495 #define	SCOREDUMP  0x01000000	/* process is dumping core */
496 #define	SMSACCT    0x02000000	/* process is keeping micro-state accounting */
497 #define	SLWPWRAP   0x04000000	/* process has wrapped its lwp ids */
498 #define	SAUTOLPG   0x08000000	/* kernel controls page sizes */
499 #define	SNOCD	   0x10000000	/* new creds from VSxID, do not coredump */
500 #define	SHOLDWATCH 0x20000000	/* hold lwps for watchpoint operation */
501 #define	SMSFORK	   0x40000000	/* child inherits micro-state accounting */
502 #define	SDOCORE	   0x80000000	/* process will attempt to dump core */
503 
504 /*
505  * p_poolflag codes
506  *
507  * These flags are used to synchronize with the pool subsystem to allow
508  * re-binding of processes to new pools.
509  */
510 #define	PBWAIT		0x0001  /* process should wait outside fork/exec/exit */
511 #define	PEXITED		0x0002  /* process exited and about to become zombie */
512 
513 /* Macro to convert proc pointer to a user block pointer */
514 #define	PTOU(p)		(&(p)->p_user)
515 
516 #define	tracing(p, sig)	(sigismember(&(p)->p_sigmask, sig))
517 
518 /* Macro to reduce unnecessary calls to issig() */
519 
520 #define	ISSIG(t, why)	ISSIG_FAST(t, ttolwp(t), ttoproc(t), why)
521 
522 /*
523  * Fast version of ISSIG.
524  *	1. uses register pointers to lwp and proc instead of reloading them.
525  *	2. uses bit-wise OR of tests, since the usual case is that none of them
526  *	   are true, this saves orcc's and branches.
527  *	3. load the signal flags instead of using sigisempty() macro which does
528  *	   a branch to convert to boolean.
529  */
530 #define	ISSIG_FAST(t, lwp, p, why)		\
531 	(ISSIG_PENDING(t, lwp, p) && issig(why))
532 
533 #define	ISSIG_PENDING(t, lwp, p)		\
534 	((lwp)->lwp_cursig |			\
535 	    sigcheck((p), (t)) |		\
536 	    (p)->p_stopsig |			\
537 	    (t)->t_dtrace_stop |		\
538 	    (t)->t_dtrace_sig |			\
539 	    ((t)->t_proc_flag & (TP_PRSTOP|TP_HOLDLWP|TP_CHKPT|TP_PAUSE)) | \
540 	    ((p)->p_flag & (SEXITLWPS|SKILLED|SHOLDFORK1|SHOLDWATCH)))
541 
542 #define	ISSTOP(sig)	 (u.u_signal[sig-1] == SIG_DFL && \
543 				sigismember(&stopdefault, sig))
544 
545 #define	ISHOLD(p)	((p)->p_flag & SHOLDFORK)
546 
547 #define	MUSTRETURN(p, t)	(ISHOLD(p) | (t)->t_activefd.a_stale)
548 
549 /*
550  * Determine if there are any watchpoints active in the process.
551  */
552 #define	pr_watch_active(p)	(avl_numnodes(&(p)->p_warea) != 0)
553 
554 /* Reasons for calling issig() */
555 
556 #define	FORREAL		0	/* Usual side-effects */
557 #define	JUSTLOOKING	1	/* Don't stop the process */
558 
559 /* 'what' values for stop(PR_SUSPENDED, what) */
560 #define	SUSPEND_NORMAL	0
561 #define	SUSPEND_PAUSE	1
562 
563 /* pseudo-flag to lwp_create() */
564 #define	NOCLASS	(-1)
565 
566 /* unused scheduling class ID */
567 #define	CLASS_UNUSED	(-2)
568 
569 /* LWP stats updated via lwp_stats_update() */
570 typedef enum {
571 	LWP_STAT_INBLK,
572 	LWP_STAT_OUBLK,
573 	LWP_STAT_MSGRCV,
574 	LWP_STAT_MSGSND
575 } lwp_stat_id_t;
576 
577 typedef struct prkillinfo {
578 	int32_t prk_error;		/* errno */
579 	int32_t prk_pad;		/* pad */
580 	siginfo_t prk_info;		/* siginfo of killing signal */
581 } prkillinfo_t;
582 
583 #ifdef _KERNEL
584 
585 /* user profiling functions */
586 
587 extern void profil_tick(uintptr_t);
588 
589 /* process management functions */
590 
591 extern int newproc(void (*)(), caddr_t, id_t, int, struct contract **, pid_t);
592 extern void vfwait(pid_t);
593 extern void proc_detach(proc_t *);
594 extern void freeproc(proc_t *);
595 extern void setrun(kthread_t *);
596 extern void setrun_locked(kthread_t *);
597 extern void exit(int, int);
598 extern int proc_exit(int, int);
599 extern void proc_is_exiting(proc_t *);
600 extern void relvm(void);
601 extern void add_ns(proc_t *, proc_t *);
602 extern void delete_ns(proc_t *, proc_t *);
603 extern void upcount_inc(uid_t, zoneid_t);
604 extern void upcount_dec(uid_t, zoneid_t);
605 extern int upcount_get(uid_t, zoneid_t);
606 #if defined(__x86)
607 extern selector_t setup_thrptr(proc_t *, uintptr_t);
608 extern void deferred_singlestep_trap(caddr_t);
609 #endif
610 
611 extern void sigcld(proc_t *, sigqueue_t *);
612 extern void sigcld_delete(k_siginfo_t *);
613 extern void sigcld_repost(void);
614 extern int fsig(k_sigset_t *, kthread_t *);
615 extern void psig(void);
616 extern void stop(int, int);
617 extern int stop_on_fault(uint_t, k_siginfo_t *);
618 extern int issig(int);
619 extern int jobstopped(proc_t *);
620 extern void psignal(proc_t *, int);
621 extern void tsignal(kthread_t *, int);
622 extern void sigtoproc(proc_t *, kthread_t *, int);
623 extern void trapsig(k_siginfo_t *, int);
624 extern void realsigprof(int, int, int);
625 extern int eat_signal(kthread_t *, int);
626 extern int signal_is_blocked(kthread_t *, int);
627 extern int sigcheck(proc_t *, kthread_t *);
628 extern void sigdefault(proc_t *);
629 
630 extern void pid_setmin(void);
631 extern pid_t pid_allocate(proc_t *, pid_t, int);
632 extern int pid_rele(struct pid *);
633 extern void pid_exit(proc_t *, struct task *);
634 extern void proc_entry_free(struct pid *);
635 extern proc_t *prfind(pid_t);
636 extern proc_t *prfind_zone(pid_t, zoneid_t);
637 extern proc_t *pgfind(pid_t);
638 extern proc_t *pgfind_zone(pid_t, zoneid_t);
639 extern proc_t *sprlock(pid_t);
640 extern proc_t *sprlock_zone(pid_t, zoneid_t);
641 extern int sprtrylock_proc(proc_t *);
642 extern void sprwaitlock_proc(proc_t *);
643 extern void sprlock_proc(proc_t *);
644 extern void sprunlock(proc_t *);
645 extern void pid_init(void);
646 extern proc_t *pid_entry(int);
647 extern int pid_slot(proc_t *);
648 extern void signal(pid_t, int);
649 extern void prsignal(struct pid *, int);
650 extern int uread(proc_t *, void *, size_t, uintptr_t);
651 extern int uwrite(proc_t *, void *, size_t, uintptr_t);
652 
653 extern void pgsignal(struct pid *, int);
654 extern void pgjoin(proc_t *, struct pid *);
655 extern void pgcreate(proc_t *);
656 extern void pgexit(proc_t *);
657 extern void pgdetach(proc_t *);
658 extern int pgmembers(pid_t);
659 
660 extern	void	init_mstate(kthread_t *, int);
661 extern	int	new_mstate(kthread_t *, int);
662 extern	void	restore_mstate(kthread_t *);
663 extern	void	term_mstate(kthread_t *);
664 extern	void	estimate_msacct(kthread_t *, hrtime_t);
665 extern	void	disable_msacct(proc_t *);
666 extern	hrtime_t mstate_aggr_state(proc_t *, int);
667 extern	hrtime_t mstate_thread_onproc_time(kthread_t *);
668 extern	void	mstate_systhread_times(kthread_t *, hrtime_t *, hrtime_t *);
669 extern	void	syscall_mstate(int, int);
670 
671 extern	uint_t	cpu_update_pct(kthread_t *, hrtime_t);
672 
673 extern void	set_proc_pre_sys(proc_t *p);
674 extern void	set_proc_post_sys(proc_t *p);
675 extern void	set_proc_sys(proc_t *p);
676 extern void	set_proc_ast(proc_t *p);
677 extern void	set_all_proc_sys(void);
678 extern void	set_all_zone_usr_proc_sys(zoneid_t);
679 
680 /* thread function prototypes */
681 
682 extern	kthread_t	*thread_create(
683 	caddr_t		stk,
684 	size_t		stksize,
685 	void		(*proc)(),
686 	void		*arg,
687 	size_t		len,
688 	proc_t 		*pp,
689 	int		state,
690 	pri_t		pri);
691 extern	void	thread_exit(void) __NORETURN;
692 extern	void	thread_free(kthread_t *);
693 extern	void	thread_rele(kthread_t *);
694 extern	void	thread_join(kt_did_t);
695 extern	int	reaper(void);
696 extern	void	installctx(kthread_t *, void *, void (*)(), void (*)(),
697     void (*)(), void (*)(), void (*)(), void (*)());
698 extern	int	removectx(kthread_t *, void *, void (*)(), void (*)(),
699     void (*)(), void (*)(), void (*)(), void (*)());
700 extern	void	savectx(kthread_t *);
701 extern	void	restorectx(kthread_t *);
702 extern	void	forkctx(kthread_t *, kthread_t *);
703 extern	void	lwp_createctx(kthread_t *, kthread_t *);
704 extern	void	exitctx(kthread_t *);
705 extern	void	freectx(kthread_t *, int);
706 extern	void	installpctx(proc_t *, void *, void (*)(), void (*)(),
707     void (*)(), void (*)(), void (*)());
708 extern	int	removepctx(proc_t *, void *, void (*)(), void (*)(),
709     void (*)(), void (*)(), void (*)());
710 extern	void	savepctx(proc_t *);
711 extern	void	restorepctx(proc_t *);
712 extern	void	forkpctx(proc_t *, proc_t *);
713 extern	void	exitpctx(proc_t *);
714 extern	void	freepctx(proc_t *, int);
715 extern	kthread_t *thread_unpin(void);
716 extern	void	thread_init(void);
717 extern	void	thread_load(kthread_t *, void (*)(), caddr_t, size_t);
718 
719 extern	void	tsd_create(uint_t *, void (*)(void *));
720 extern	void	tsd_destroy(uint_t *);
721 extern	void	*tsd_getcreate(uint_t *, void (*)(void *), void *(*)(void));
722 extern	void	*tsd_get(uint_t);
723 extern	int	tsd_set(uint_t, void *);
724 extern	void	tsd_exit(void);
725 extern	void	*tsd_agent_get(kthread_t *, uint_t);
726 extern	int	tsd_agent_set(kthread_t *, uint_t, void *);
727 
728 /* lwp function prototypes */
729 
730 extern kthread_t *lwp_kernel_create(proc_t *, void (*)(), void *, int, pri_t);
731 extern	klwp_t 		*lwp_create(
732 	void		(*proc)(),
733 	caddr_t		arg,
734 	size_t		len,
735 	proc_t		*p,
736 	int		state,
737 	int		pri,
738 	const k_sigset_t *smask,
739 	int		cid,
740 	id_t		lwpid);
741 extern	kthread_t *idtot(proc_t *, id_t);
742 extern	void	lwp_hash_in(proc_t *, lwpent_t *, tidhash_t *, uint_t, int);
743 extern	void	lwp_hash_out(proc_t *, id_t);
744 extern	lwpdir_t *lwp_hash_lookup(proc_t *, id_t);
745 extern	lwpdir_t *lwp_hash_lookup_and_lock(proc_t *, id_t, kmutex_t **);
746 extern	void	lwp_create_done(kthread_t *);
747 extern	void	lwp_exit(void);
748 extern	void	lwp_pcb_exit(void);
749 extern	void	lwp_cleanup(void);
750 extern	int	lwp_suspend(kthread_t *);
751 extern	void	lwp_continue(kthread_t *);
752 extern	void	holdlwp(void);
753 extern	void	stoplwp(void);
754 extern	int	holdlwps(int);
755 extern	int	holdwatch(void);
756 extern	void	pokelwps(proc_t *);
757 extern	void	continuelwps(proc_t *);
758 extern	int	exitlwps(int);
759 extern	void	lwp_ctmpl_copy(klwp_t *, klwp_t *);
760 extern	void	lwp_ctmpl_clear(klwp_t *);
761 extern	klwp_t	*forklwp(klwp_t *, proc_t *, id_t);
762 extern	void	lwp_load(klwp_t *, gregset_t, uintptr_t);
763 extern	void	lwp_setrval(klwp_t *, int, int);
764 extern	void	lwp_forkregs(klwp_t *, klwp_t *);
765 extern	void	lwp_freeregs(klwp_t *, int);
766 extern	caddr_t	lwp_stk_init(klwp_t *, caddr_t);
767 extern	void	lwp_stk_cache_init(void);
768 extern	void	lwp_stk_fini(klwp_t *);
769 extern	void	lwp_installctx(klwp_t *);
770 extern	void	lwp_rtt(void);
771 extern	void	lwp_rtt_initial(void);
772 extern	int	lwp_setprivate(klwp_t *, int, uintptr_t);
773 extern	void	lwp_stat_update(lwp_stat_id_t, long);
774 extern	void	lwp_attach_brand_hdlrs(klwp_t *);
775 extern	void	lwp_detach_brand_hdlrs(klwp_t *);
776 
777 #if defined(__sparcv9)
778 extern	void	lwp_mmodel_newlwp(void);
779 extern	void	lwp_mmodel_shared_as(caddr_t, size_t);
780 #define	LWP_MMODEL_NEWLWP()		lwp_mmodel_newlwp()
781 #define	LWP_MMODEL_SHARED_AS(addr, sz)	lwp_mmodel_shared_as((addr), (sz))
782 #else
783 #define	LWP_MMODEL_NEWLWP()
784 #define	LWP_MMODEL_SHARED_AS(addr, sz)
785 #endif
786 
787 /*
788  * Signal queue function prototypes. Must be here due to header ordering
789  * dependencies.
790  */
791 extern void sigqfree(proc_t *);
792 extern void siginfofree(sigqueue_t *);
793 extern void sigdeq(proc_t *, kthread_t *, int, sigqueue_t **);
794 extern void sigdelq(proc_t *, kthread_t *, int);
795 extern void sigaddq(proc_t *, kthread_t *, k_siginfo_t *, int);
796 extern void sigaddqa(proc_t *, kthread_t *, sigqueue_t *);
797 extern void sigqsend(int, proc_t *, kthread_t *, sigqueue_t *);
798 extern void sigdupq(proc_t *, proc_t *);
799 extern int sigwillqueue(int, int);
800 extern sigqhdr_t *sigqhdralloc(size_t, uint_t);
801 extern sigqueue_t *sigqalloc(sigqhdr_t *);
802 extern void sigqhdrfree(sigqhdr_t *);
803 extern sigqueue_t *sigappend(k_sigset_t *, sigqueue_t *,
804 	k_sigset_t *, sigqueue_t *);
805 extern sigqueue_t *sigprepend(k_sigset_t *, sigqueue_t *,
806 	k_sigset_t *, sigqueue_t *);
807 extern void winfo(proc_t *, k_siginfo_t *, int);
808 extern int wstat(int, int);
809 extern int sendsig(int, k_siginfo_t *, void (*)());
810 #if defined(_SYSCALL32_IMPL)
811 extern int sendsig32(int, k_siginfo_t *, void (*)());
812 #endif
813 
814 #endif	/* _KERNEL */
815 
816 #ifdef	__cplusplus
817 }
818 #endif
819 
820 #endif	/* _SYS_PROC_H */
821