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 2020 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 * Kernel probes
296 */
297 uchar_t p_tnf_flags;
298
299 /*
300 * Solaris Audit
301 */
302 struct p_audit_data *p_audit_data; /* per process audit structure */
303
304 pctxop_t *p_pctx;
305
306 #if defined(__x86)
307 /*
308 * LDT support.
309 */
310 kmutex_t p_ldtlock; /* protects the following fields */
311 user_desc_t *p_ldt; /* Pointer to private LDT */
312 uint64_t p_unused1; /* no longer used */
313 uint64_t p_unused2; /* no longer used */
314 ushort_t p_ldtlimit; /* highest selector used */
315 #endif
316 size_t p_swrss; /* resident set size before last swap */
317 struct aio *p_aio; /* pointer to async I/O struct */
318 struct itimer **p_itimer; /* interval timers */
319 uint_t p_itimer_sz; /* max allocated interval timers */
320 timeout_id_t p_alarmid; /* alarm's timeout id */
321 caddr_t p_usrstack; /* top of the process stack */
322 uint_t p_stkprot; /* stack memory protection */
323 uint_t p_datprot; /* data memory protection */
324 model_t p_model; /* data model determined at exec time */
325 struct lwpchan_data *p_lcp; /* lwpchan cache */
326 kmutex_t p_lcp_lock; /* protects assignments to p_lcp */
327 utrap_handler_t *p_utraps; /* pointer to user trap handlers */
328 struct corectl_path *p_corefile; /* pattern for core file */
329 struct task *p_task; /* our containing task */
330 struct proc *p_taskprev; /* ptr to previous process in task */
331 struct proc *p_tasknext; /* ptr to next process in task */
332 kmutex_t p_sc_lock; /* protects p_pagep */
333 struct sc_page_ctl *p_pagep; /* list of process's shared pages */
334 struct rctl_set *p_rctls; /* resource controls for this process */
335 rlim64_t p_stk_ctl; /* currently enforced stack size */
336 rlim64_t p_fsz_ctl; /* currently enforced file size */
337 rlim64_t p_vmem_ctl; /* currently enforced addr-space size */
338 rlim64_t p_fno_ctl; /* currently enforced file-desc limit */
339 pid_t p_ancpid; /* ancestor pid, used by exacct */
340 struct itimerval p_realitimer; /* real interval timer */
341 timeout_id_t p_itimerid; /* real interval timer's timeout id */
342 struct corectl_content *p_content; /* content of core file */
343
344 avl_tree_t p_ct_held; /* held contracts */
345 struct ct_equeue **p_ct_equeue; /* process-type event queues */
346
347 struct cont_process *p_ct_process; /* process contract */
348 list_node_t p_ct_member; /* process contract membership */
349 sigqueue_t *p_killsqp; /* sigqueue pointer for SIGKILL */
350
351 int p_dtrace_probes; /* are there probes for this proc? */
352 uint64_t p_dtrace_count; /* number of DTrace tracepoints */
353 /* (protected by P_PR_LOCK) */
354 void *p_dtrace_helpers; /* DTrace helpers, if any */
355 struct pool *p_pool; /* pointer to containing pool */
356 kcondvar_t p_poolcv; /* synchronization with pools */
357 uint_t p_poolcnt; /* # threads inside pool barrier */
358 uint_t p_poolflag; /* pool-related flags (see below) */
359 uint_t p_upanicflag; /* upanic-related flags (see below) */
360 void *p_upanic; /* optional upanic data */
361 uintptr_t p_portcnt; /* event ports counter */
362 struct zone *p_zone; /* zone in which process lives */
363 struct vnode *p_execdir; /* directory that p_exec came from */
364 struct brand *p_brand; /* process's brand */
365 void *p_brand_data; /* per-process brand state */
366 psecflags_t p_secflags; /* per-process security flags */
367
368 /* additional lock to protect p_sessp (but not its contents) */
369 kmutex_t p_splock;
370 rctl_qty_t p_locked_mem; /* locked memory charged to proc */
371 /* protected by p_lock */
372 rctl_qty_t p_crypto_mem; /* /dev/crypto memory charged to proc */
373 /* protected by p_lock */
374 clock_t p_ttime; /* buffered task time */
375
376 /*
377 * The user structure
378 */
379 struct user p_user; /* (see sys/user.h) */
380 } proc_t;
381
382 #define PROC_T /* headers relying on proc_t are OK */
383
384 #ifdef _KERNEL
385
386 /* active process chain */
387
388 extern proc_t *practive;
389
390 /* Well known processes */
391
392 extern proc_t *proc_sched; /* memory scheduler */
393 extern proc_t *proc_init; /* init */
394 extern proc_t *proc_pageout; /* pageout daemon */
395 extern proc_t *proc_fsflush; /* filesystem sync-er */
396
397 #endif /* _KERNEL */
398
399 /*
400 * Stuff to keep track of the number of processes each uid has.
401 * It is tracked on a per-zone basis; that is, if users in different
402 * zones have the same uid, they are tracked separately.
403 *
404 * A structure is allocated when a new <uid,zoneid> pair shows up
405 * There is a hash to find each structure.
406 */
407 struct upcount {
408 struct upcount *up_next;
409 uid_t up_uid;
410 zoneid_t up_zoneid;
411 uint_t up_count;
412 };
413
414 /* process ID info */
415
416 struct pid {
417 unsigned int pid_prinactive :1;
418 unsigned int pid_pgorphaned :1;
419 unsigned int pid_padding :6; /* used to be pid_ref, now an int */
420 unsigned int pid_prslot :24;
421 pid_t pid_id;
422 struct proc *pid_pglink;
423 struct proc *pid_pgtail;
424 struct pid *pid_link;
425 uint_t pid_ref;
426 };
427
428 #define p_pgrp p_pgidp->pid_id
429 #define p_pid p_pidp->pid_id
430 #define p_slot p_pidp->pid_prslot
431 #define p_detached p_pgidp->pid_pgorphaned
432
433 #define PID_HOLD(pidp) ASSERT(MUTEX_HELD(&pidlock)); \
434 ++(pidp)->pid_ref;
435 #define PID_RELE(pidp) ASSERT(MUTEX_HELD(&pidlock)); \
436 (pidp)->pid_ref > 1 ? \
437 --(pidp)->pid_ref : pid_rele(pidp);
438
439 /*
440 * Structure containing persistent process lock. The structure and
441 * macro allow "mutex_enter(&p->p_lock)" to continue working.
442 */
443 struct plock {
444 kmutex_t pl_lock;
445 };
446 #define p_lock p_lockp->pl_lock
447
448 #ifdef _KERNEL
449 extern proc_t p0; /* process 0 */
450 extern struct plock p0lock; /* p0's plock */
451 extern struct pid pid0; /* p0's pid */
452
453 /* pid_allocate() flags */
454 #define PID_ALLOC_PROC 0x0001 /* assign a /proc slot as well */
455
456 #endif /* _KERNEL */
457
458 /* stat codes */
459
460 #define SSLEEP 1 /* awaiting an event */
461 #define SRUN 2 /* runnable */
462 #define SZOMB 3 /* process terminated but not waited for */
463 #define SSTOP 4 /* process stopped by debugger */
464 #define SIDL 5 /* intermediate state in process creation */
465 #define SONPROC 6 /* process is being run on a processor */
466 #define SWAIT 7 /* process is waiting to become runnable */
467
468 /* p_pidflag codes */
469 #define CLDPEND 0x0001 /* have yet to post a SIGCHLD to the parent */
470 #define CLDCONT 0x0002 /* child has notified parent of CLD_CONTINUED */
471 #define CLDNOSIGCHLD 0x0004 /* do not post SIGCHLD when child terminates */
472 #define CLDWAITPID 0x0008 /* only waitid(P_PID, pid) can reap the child */
473
474 /* p_proc_flag codes -- these flags are mostly private to /proc */
475 #define P_PR_TRACE 0x0001 /* signal, fault or syscall tracing via /proc */
476 #define P_PR_PTRACE 0x0002 /* ptrace() compatibility mode */
477 #define P_PR_FORK 0x0004 /* child inherits tracing flags */
478 #define P_PR_LOCK 0x0008 /* process locked by /proc */
479 #define P_PR_ASYNC 0x0010 /* asynchronous stopping via /proc */
480 #define P_PR_EXEC 0x0020 /* process is in exec() */
481 #define P_PR_BPTADJ 0x0040 /* adjust pc on breakpoint trap */
482 #define P_PR_RUNLCL 0x0080 /* set process running on last /proc close */
483 #define P_PR_KILLCL 0x0100 /* kill process on last /proc close */
484
485 /*
486 * p_flag codes
487 *
488 * note that two of these flags, SMSACCT and SSYS, are exported to /proc's
489 * psinfo_t.p_flag field. Historically, all were, but since they are
490 * implementation dependant, we only export the ones people have come to
491 * rely upon. Hence, the bit positions of SSYS and SMSACCT should not be
492 * altered.
493 */
494 #define SSYS 0x00000001 /* system (resident) process */
495 #define SEXITING 0x00000002 /* process is exiting */
496 #define SITBUSY 0x00000004 /* setitimer(ITIMER_REAL) in progress */
497 #define SFORKING 0x00000008 /* tells called functions that we're forking */
498 #define SWATCHOK 0x00000010 /* proc in acceptable state for watchpoints */
499 #define SKILLED 0x00000100 /* SIGKILL has been posted to the process */
500 #define SSCONT 0x00000200 /* SIGCONT has been posted to the process */
501 #define SZONETOP 0x00000400 /* process has no valid PPID in its zone */
502 #define SEXTKILLED 0x00000800 /* SKILLED is from another contract */
503 #define SUGID 0x00002000 /* process was result of set[ug]id exec */
504 #define SEXECED 0x00004000 /* this process has execed */
505 #define SJCTL 0x00010000 /* SIGCHLD sent when children stop/continue */
506 #define SNOWAIT 0x00020000 /* children never become zombies */
507 #define SVFORK 0x00040000 /* child of vfork that has not yet exec'd */
508 #define SVFWAIT 0x00080000 /* parent of vfork waiting for child to exec */
509 #define SEXITLWPS 0x00100000 /* have lwps exit within the process */
510 #define SHOLDFORK 0x00200000 /* hold lwps where they're cloneable */
511 #define SHOLDFORK1 0x00800000 /* hold lwps in place (not cloning) */
512 #define SCOREDUMP 0x01000000 /* process is dumping core */
513 #define SMSACCT 0x02000000 /* process is keeping micro-state accounting */
514 #define SLWPWRAP 0x04000000 /* process has wrapped its lwp ids */
515 #define SAUTOLPG 0x08000000 /* kernel controls page sizes */
516 #define SNOCD 0x10000000 /* new creds from VSxID, do not coredump */
517 #define SHOLDWATCH 0x20000000 /* hold lwps for watchpoint operation */
518 #define SMSFORK 0x40000000 /* child inherits micro-state accounting */
519 #define SDOCORE 0x80000000 /* process will attempt to dump core */
520
521 /*
522 * p_poolflag codes
523 *
524 * These flags are used to synchronize with the pool subsystem to allow
525 * re-binding of processes to new pools.
526 */
527 #define PBWAIT 0x0001 /* process should wait outside fork/exec/exit */
528 #define PEXITED 0x0002 /* process exited and about to become zombie */
529
530 /*
531 * p_upanicflag codes
532 */
533 #define P_UPF_PANICKED 0x0001
534 #define P_UPF_HAVEMSG 0x0002
535 #define P_UPF_TRUNCMSG 0x0004
536 #define P_UPF_INVALMSG 0x0008
537
538 /* Macro to convert proc pointer to a user block pointer */
539 #define PTOU(p) (&(p)->p_user)
540
541 #define tracing(p, sig) (sigismember(&(p)->p_sigmask, sig))
542
543 /* Macro to reduce unnecessary calls to issig() */
544
545 #define ISSIG(t, why) ISSIG_FAST(t, ttolwp(t), ttoproc(t), why)
546
547 /*
548 * Fast version of ISSIG.
549 * 1. uses register pointers to lwp and proc instead of reloading them.
550 * 2. uses bit-wise OR of tests, since the usual case is that none of them
551 * are true, this saves orcc's and branches.
552 * 3. load the signal flags instead of using sigisempty() macro which does
553 * a branch to convert to boolean.
554 */
555 #define ISSIG_FAST(t, lwp, p, why) \
556 (ISSIG_PENDING(t, lwp, p) && issig(why))
557
558 #define ISSIG_PENDING(t, lwp, p) \
559 ((lwp)->lwp_cursig | \
560 sigcheck((p), (t)) | \
561 (p)->p_stopsig | \
562 (t)->t_dtrace_stop | \
563 (t)->t_dtrace_sig | \
564 ((t)->t_proc_flag & (TP_PRSTOP|TP_HOLDLWP|TP_CHKPT|TP_PAUSE)) | \
565 ((p)->p_flag & (SEXITLWPS|SKILLED|SHOLDFORK1|SHOLDWATCH)))
566
567 #define ISSTOP(sig) (u.u_signal[sig-1] == SIG_DFL && \
568 sigismember(&stopdefault, sig))
569
570 #define ISHOLD(p) ((p)->p_flag & SHOLDFORK)
571
572 #define MUSTRETURN(p, t) (ISHOLD(p) | (t)->t_activefd.a_stale)
573
574 /*
575 * Determine if there are any watchpoints active in the process.
576 */
577 #define pr_watch_active(p) (avl_numnodes(&(p)->p_warea) != 0)
578
579 /* Reasons for calling issig() */
580
581 #define FORREAL 0 /* Usual side-effects */
582 #define JUSTLOOKING 1 /* Don't stop the process */
583
584 /* 'what' values for stop(PR_SUSPENDED, what) */
585 #define SUSPEND_NORMAL 0
586 #define SUSPEND_PAUSE 1
587
588 /* pseudo-flag to lwp_create() */
589 #define NOCLASS (-1)
590
591 /* unused scheduling class ID */
592 #define CLASS_UNUSED (-2)
593
594 /* LWP stats updated via lwp_stats_update() */
595 typedef enum {
596 LWP_STAT_INBLK,
597 LWP_STAT_OUBLK,
598 LWP_STAT_MSGRCV,
599 LWP_STAT_MSGSND
600 } lwp_stat_id_t;
601
602 typedef struct prkillinfo {
603 int32_t prk_error; /* errno */
604 int32_t prk_pad; /* pad */
605 siginfo_t prk_info; /* siginfo of killing signal */
606 } prkillinfo_t;
607
608 #ifdef _KERNEL
609
610 /* user profiling functions */
611
612 extern void profil_tick(uintptr_t);
613
614 /* process management functions */
615
616 extern int newproc(void (*)(), caddr_t, id_t, int, struct contract **, pid_t);
617 extern void vfwait(pid_t);
618 extern void proc_detach(proc_t *);
619 extern void freeproc(proc_t *);
620 extern void setrun(kthread_t *);
621 extern void setrun_locked(kthread_t *);
622 extern void exit(int, int);
623 extern int proc_exit(int, int);
624 extern void proc_is_exiting(proc_t *);
625 extern void relvm(void);
626 extern void add_ns(proc_t *, proc_t *);
627 extern void delete_ns(proc_t *, proc_t *);
628 extern void upcount_inc(uid_t, zoneid_t);
629 extern void upcount_dec(uid_t, zoneid_t);
630 extern int upcount_get(uid_t, zoneid_t);
631 #if defined(__x86)
632 extern selector_t setup_thrptr(proc_t *, uintptr_t);
633 extern void deferred_singlestep_trap(caddr_t);
634 #endif
635
636 extern void sigcld(proc_t *, sigqueue_t *);
637 extern void sigcld_delete(k_siginfo_t *);
638 extern void sigcld_repost(void);
639 extern int fsig(k_sigset_t *, kthread_t *);
640 extern void psig(void);
641 extern void stop(int, int);
642 extern int stop_on_fault(uint_t, k_siginfo_t *);
643 extern int issig(int);
644 extern int jobstopped(proc_t *);
645 extern void psignal(proc_t *, int);
646 extern void tsignal(kthread_t *, int);
647 extern void sigtoproc(proc_t *, kthread_t *, int);
648 extern void trapsig(k_siginfo_t *, int);
649 extern void realsigprof(int, int, int);
650 extern int eat_signal(kthread_t *, int);
651 extern int signal_is_blocked(kthread_t *, int);
652 extern int sigcheck(proc_t *, kthread_t *);
653 extern void sigdefault(proc_t *);
654
655 extern void pid_setmin(void);
656 extern pid_t pid_allocate(proc_t *, pid_t, int);
657 extern int pid_rele(struct pid *);
658 extern void pid_exit(proc_t *, struct task *);
659 extern void proc_entry_free(struct pid *);
660 extern proc_t *prfind(pid_t);
661 extern proc_t *prfind_zone(pid_t, zoneid_t);
662 extern proc_t *pgfind(pid_t);
663 extern proc_t *pgfind_zone(pid_t, zoneid_t);
664 extern proc_t *sprlock(pid_t);
665 extern proc_t *sprlock_zone(pid_t, zoneid_t);
666 extern int sprtrylock_proc(proc_t *);
667 extern void sprwaitlock_proc(proc_t *);
668 extern void sprlock_proc(proc_t *);
669 extern void sprunlock(proc_t *);
670 extern void pid_init(void);
671 extern proc_t *pid_entry(int);
672 extern int pid_slot(proc_t *);
673 extern void signal(pid_t, int);
674 extern void prsignal(struct pid *, int);
675 extern int uread(proc_t *, void *, size_t, uintptr_t);
676 extern int uwrite(proc_t *, void *, size_t, uintptr_t);
677
678 extern void pgsignal(struct pid *, int);
679 extern void pgjoin(proc_t *, struct pid *);
680 extern void pgcreate(proc_t *);
681 extern void pgexit(proc_t *);
682 extern void pgdetach(proc_t *);
683 extern int pgmembers(pid_t);
684
685 extern void init_mstate(kthread_t *, int);
686 extern int new_mstate(kthread_t *, int);
687 extern void restore_mstate(kthread_t *);
688 extern void term_mstate(kthread_t *);
689 extern void estimate_msacct(kthread_t *, hrtime_t);
690 extern void disable_msacct(proc_t *);
691 extern hrtime_t mstate_aggr_state(proc_t *, int);
692 extern hrtime_t mstate_thread_onproc_time(kthread_t *);
693 extern void mstate_systhread_times(kthread_t *, hrtime_t *, hrtime_t *);
694 extern void syscall_mstate(int, int);
695
696 extern uint_t cpu_update_pct(kthread_t *, hrtime_t);
697
698 extern void set_proc_pre_sys(proc_t *p);
699 extern void set_proc_post_sys(proc_t *p);
700 extern void set_proc_sys(proc_t *p);
701 extern void set_proc_ast(proc_t *p);
702 extern void set_all_proc_sys(void);
703 extern void set_all_zone_usr_proc_sys(zoneid_t);
704
705 /* thread function prototypes */
706
707 extern kthread_t *thread_create(
708 caddr_t stk,
709 size_t stksize,
710 void (*proc)(),
711 void *arg,
712 size_t len,
713 proc_t *pp,
714 int state,
715 pri_t pri);
716 extern void thread_exit(void) __NORETURN;
717 extern void thread_free(kthread_t *);
718 extern void thread_rele(kthread_t *);
719 extern void thread_join(kt_did_t);
720 extern int reaper(void);
721 extern struct ctxop *installctx_preallocate(void);
722 extern void installctx(kthread_t *, void *, void (*)(), void (*)(),
723 void (*)(), void (*)(), void (*)(), void (*)(), struct ctxop *);
724 extern int removectx(kthread_t *, void *, void (*)(), void (*)(),
725 void (*)(), void (*)(), void (*)(), void (*)());
726 extern void savectx(kthread_t *);
727 extern void restorectx(kthread_t *);
728 extern void forkctx(kthread_t *, kthread_t *);
729 extern void lwp_createctx(kthread_t *, kthread_t *);
730 extern void exitctx(kthread_t *);
731 extern void freectx(kthread_t *, int);
732 extern void installpctx(proc_t *, void *, void (*)(), void (*)(),
733 void (*)(), void (*)(), void (*)());
734 extern int removepctx(proc_t *, void *, void (*)(), void (*)(),
735 void (*)(), void (*)(), void (*)());
736 extern void savepctx(proc_t *);
737 extern void restorepctx(proc_t *);
738 extern void forkpctx(proc_t *, proc_t *);
739 extern void exitpctx(proc_t *);
740 extern void freepctx(proc_t *, int);
741 extern kthread_t *thread_unpin(void);
742 extern void thread_init(void);
743 extern void thread_load(kthread_t *, void (*)(), caddr_t, size_t);
744
745 extern void tsd_create(uint_t *, void (*)(void *));
746 extern void tsd_destroy(uint_t *);
747 extern void *tsd_getcreate(uint_t *, void (*)(void *), void *(*)(void));
748 extern void *tsd_get(uint_t);
749 extern int tsd_set(uint_t, void *);
750 extern void tsd_exit(void);
751 extern void *tsd_agent_get(kthread_t *, uint_t);
752 extern int tsd_agent_set(kthread_t *, uint_t, void *);
753
754 /* lwp function prototypes */
755
756 extern kthread_t *lwp_kernel_create(proc_t *, void (*)(), void *, int, pri_t);
757 extern klwp_t *lwp_create(
758 void (*proc)(),
759 caddr_t arg,
760 size_t len,
761 proc_t *p,
762 int state,
763 int pri,
764 const k_sigset_t *smask,
765 int cid,
766 id_t lwpid);
767 extern kthread_t *idtot(proc_t *, id_t);
768 extern void lwp_hash_in(proc_t *, lwpent_t *, tidhash_t *, uint_t, int);
769 extern void lwp_hash_out(proc_t *, id_t);
770 extern lwpdir_t *lwp_hash_lookup(proc_t *, id_t);
771 extern lwpdir_t *lwp_hash_lookup_and_lock(proc_t *, id_t, kmutex_t **);
772 extern void lwp_create_done(kthread_t *);
773 extern void lwp_exit(void);
774 extern void lwp_pcb_exit(void);
775 extern void lwp_cleanup(void);
776 extern int lwp_suspend(kthread_t *);
777 extern void lwp_continue(kthread_t *);
778 extern void holdlwp(void);
779 extern void stoplwp(void);
780 extern int holdlwps(int);
781 extern int holdwatch(void);
782 extern void pokelwps(proc_t *);
783 extern void continuelwps(proc_t *);
784 extern int exitlwps(int);
785 extern void lwp_ctmpl_copy(klwp_t *, klwp_t *);
786 extern void lwp_ctmpl_clear(klwp_t *);
787 extern klwp_t *forklwp(klwp_t *, proc_t *, id_t);
788 extern void lwp_load(klwp_t *, gregset_t, uintptr_t);
789 extern void lwp_setrval(klwp_t *, int, int);
790 extern void lwp_forkregs(klwp_t *, klwp_t *);
791 extern void lwp_freeregs(klwp_t *, int);
792 extern caddr_t lwp_stk_init(klwp_t *, caddr_t);
793 extern void lwp_stk_cache_init(void);
794 extern void lwp_stk_fini(klwp_t *);
795 extern void lwp_fp_init(klwp_t *);
796 extern void lwp_installctx(klwp_t *);
797 extern void lwp_rtt(void);
798 extern void lwp_rtt_initial(void);
799 extern int lwp_setprivate(klwp_t *, int, uintptr_t);
800 extern void lwp_stat_update(lwp_stat_id_t, long);
801 extern void lwp_attach_brand_hdlrs(klwp_t *);
802 extern void lwp_detach_brand_hdlrs(klwp_t *);
803
804 #if defined(__sparcv9)
805 extern void lwp_mmodel_newlwp(void);
806 extern void lwp_mmodel_shared_as(caddr_t, size_t);
807 #define LWP_MMODEL_NEWLWP() lwp_mmodel_newlwp()
808 #define LWP_MMODEL_SHARED_AS(addr, sz) lwp_mmodel_shared_as((addr), (sz))
809 #else
810 #define LWP_MMODEL_NEWLWP()
811 #define LWP_MMODEL_SHARED_AS(addr, sz)
812 #endif
813
814 /*
815 * Signal queue function prototypes. Must be here due to header ordering
816 * dependencies.
817 */
818 extern void sigqfree(proc_t *);
819 extern void siginfofree(sigqueue_t *);
820 extern void sigdeq(proc_t *, kthread_t *, int, sigqueue_t **);
821 extern void sigdelq(proc_t *, kthread_t *, int);
822 extern void sigaddq(proc_t *, kthread_t *, k_siginfo_t *, int);
823 extern void sigaddqa(proc_t *, kthread_t *, sigqueue_t *);
824 extern void sigqsend(int, proc_t *, kthread_t *, sigqueue_t *);
825 extern void sigdupq(proc_t *, proc_t *);
826 extern int sigwillqueue(int, int);
827 extern sigqhdr_t *sigqhdralloc(size_t, uint_t);
828 extern sigqueue_t *sigqalloc(sigqhdr_t *);
829 extern void sigqhdrfree(sigqhdr_t *);
830 extern sigqueue_t *sigappend(k_sigset_t *, sigqueue_t *,
831 k_sigset_t *, sigqueue_t *);
832 extern sigqueue_t *sigprepend(k_sigset_t *, sigqueue_t *,
833 k_sigset_t *, sigqueue_t *);
834 extern void winfo(proc_t *, k_siginfo_t *, int);
835 extern int wstat(int, int);
836 extern int sendsig(int, k_siginfo_t *, void (*)());
837 #if defined(_SYSCALL32_IMPL)
838 extern int sendsig32(int, k_siginfo_t *, void (*)());
839 #endif
840
841 #endif /* _KERNEL */
842
843 #ifdef __cplusplus
844 }
845 #endif
846
847 #endif /* _SYS_PROC_H */