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