poll/select: Use 64bit serial for poll/select's kevent.udata.
[dragonfly.git] / sys / sys / proc.h
CommitLineData
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1/*-
2 * Copyright (c) 1986, 1989, 1991, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
2c64e990 18 * 3. Neither the name of the University nor the names of its contributors
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19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
984263bc 33 */
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34#ifndef _SYS_PROC_H_
35#define _SYS_PROC_H_
36
05220613 37#if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES)
03d6a592 38
05220613 39#error "Userland must include sys/user.h instead of sys/proc.h"
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40
41#else
05220613 42
8c3a8690 43#include <sys/callout.h> /* For struct callout. */
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44#include <sys/filedesc.h>
45#include <sys/queue.h>
3e291793 46#include <sys/tree.h>
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47#include <sys/rtprio.h> /* For struct rtprio. */
48#include <sys/signal.h>
167e6ecb 49#include <sys/lock.h>
0adbcbd6 50#include <sys/upmap.h>
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51#ifndef _KERNEL
52#include <sys/time.h> /* For structs itimerval, timeval. */
53#endif
54#include <sys/ucred.h>
55#include <sys/event.h> /* For struct klist */
a591f597 56#include <sys/eventvar.h>
0855a2af 57#include <sys/sysent.h> /* For struct sysentvec */
84b592ba 58#include <sys/thread.h>
98a7f915 59#include <sys/varsym.h>
93328593 60#include <sys/resourcevar.h>
ec12abe0 61#ifdef _KERNEL
fc3bc286 62#include <sys/procctl.h>
a2a5ad0d 63#include <sys/globaldata.h>
ec12abe0 64#endif
dcc99b62 65#include <sys/systimer.h>
c4df9635 66#include <sys/iosched.h>
a77ac49d 67#include <sys/usched.h>
3020e3be 68#include <machine/proc.h> /* Machine-dependent proc substruct. */
acf2a718 69#include <machine/atomic.h> /* Machine-dependent proc substruct. */
b1b4e5a6 70#include <sys/signalvar.h>
84b592ba 71
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72struct proc;
73struct pgrp;
74struct session;
75struct lwp;
76
70d3d461 77LIST_HEAD(proclist, proc);
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78LIST_HEAD(pgrplist, pgrp);
79LIST_HEAD(sesslist, session);
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80LIST_HEAD(lwplist, lwp);
81
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82struct lwp_rb_tree;
83RB_HEAD(lwp_rb_tree, lwp);
84RB_PROTOTYPE2(lwp_rb_tree, lwp, u.lwp_rbnode, rb_lwp_compare, lwpid_t);
85
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86/*
87 * One structure allocated per session.
88 */
89struct session {
b22b6ecd 90 LIST_ENTRY(session) s_list; /* Hash chain. */
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91 int s_count; /* Ref cnt; pgrps in session. */
92 struct proc *s_leader; /* Session leader. */
93 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */
94 struct tty *s_ttyp; /* Controlling terminal. */
95 pid_t s_sid; /* Session ID */
96 char s_login[roundup(MAXLOGNAME, sizeof(long))]; /* Setlogin() name. */
97};
98
99/*
100 * One structure allocated per process group.
101 */
102struct pgrp {
b22b6ecd 103 LIST_ENTRY(pgrp) pg_list; /* Hash chain. */
70d3d461 104 struct proclist pg_members; /* Pointer to pgrp members. */
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105 struct session *pg_session; /* Pointer to session. */
106 struct sigiolst pg_sigiolst; /* List of sigio sources. */
107 pid_t pg_id; /* Pgrp id. */
108 int pg_jobc; /* # procs qualifying pgrp for job control */
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109 u_int pg_refs;
110 struct lwkt_token pg_token;
111 struct lock pg_lock;
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112};
113
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114#define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */
115#define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */
a0ae03a7 116#define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */
984263bc 117
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118/*
119 * pargs, used to hold a copy of the command line, if it had a sane
120 * length
121 */
122struct pargs {
123 u_int ar_ref; /* Reference count */
124 u_int ar_length; /* Length */
125 u_char ar_args[0]; /* Arguments */
126};
127
128/*
129 * Description of a process.
130 *
131 * This structure contains the information needed to manage a thread of
132 * control, known in UN*X as a process; it has references to substructures
133 * containing descriptions of things that the process uses, but may share
134 * with related processes. The process structure and the substructures
135 * are always addressable except for those marked "(PROC ONLY)" below,
136 * which might be addressable only on a processor on which the process
137 * is running.
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138 *
139 * NOTE! The process start time is stored in the thread structure associated
140 * with the process. If the process is a Zombie, then this field will be
141 * inaccessible due to the thread structure being free'd in kern_wait1().
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142 */
143
144struct jail;
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145struct vkernel_proc;
146struct vkernel_lwp;
287ebb09 147struct vmspace_entry;
29f58392 148struct ktrace_node;
79757ed0 149struct sem_undo;
984263bc 150
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151enum lwpstat {
152 LSRUN = 1,
153 LSSTOP = 2,
154 LSSLEEP = 3,
155};
156
157enum procstat {
158 SIDL = 1,
159 SACTIVE = 2,
160 SSTOP = 3,
416d05d7 161 SZOMB = 4,
f5b92db7 162 SCORE = 5,
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163};
164
ef09c3ed 165struct lwp {
ef09c3ed 166 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */
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167 union {
168 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */
169 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */
170 } u;
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171
172 struct proc *lwp_proc; /* Link to our proc. */
287ebb09 173 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */
39005e16 174 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */
ef09c3ed 175
526c5c2b 176 lwpid_t lwp_tid; /* Our thread id, >= 1 */
ef09c3ed 177
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178 u_int lwp_flags; /* LWP_* flags */
179 u_int lwp_mpflags; /* LWP_MP_* flags */
180 enum lwpstat lwp_stat; /* LS* lwp status */
cc1d939b 181 int lwp_lock; /* lwp lock (prevent destruct) count */
ef09c3ed 182
4643740a 183 int lwp_dupfd; /* Sideways return value from fdopen */
ef09c3ed 184
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185 /*
186 * The following two fields are marked XXX since (at least) the
187 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly.
188 * These fields are used to pass the trap code from trapsignal() to
189 * postsig(), which gets called later from userret().
190 *
191 * The correct "fix" for these XXX is to convert our signal system
192 * to use signal queues, where each signal can carry its own meta
193 * data.
194 */
195 int lwp_sig; /* for core dump/debugger XXX */
196 u_long lwp_code; /* for core dump/debugger XXX */
197
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198 /*
199 * Scheduling.
200 */
201 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */
202 sysclock_t lwp_cpbase; /* Measurement base */
203 fixpt_t lwp_pctcpu; /* %cpu for this process */
ef09c3ed 204 u_int lwp_slptime; /* Time since last blocked. */
e28d8b15 205 u_int lwp_rebal_ticks; /* Timestamp sched on current cpu */
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206
207 int lwp_traceflag; /* Kernel trace points. */
208
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209 struct rusage lwp_ru; /* stats for this lwp */
210
ef09c3ed 211 union usched_data lwp_usdata; /* User scheduler specific */
ef09c3ed 212
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213#define lwp_startcopy lwp_cpumask
214 cpumask_t lwp_cpumask;
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215 sigset_t lwp_siglist; /* Signals arrived but not delivered. */
216 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */
217 sigset_t lwp_sigmask; /* Current signal mask. */
218 stack_t lwp_sigstk; /* sp & on stack state variable */
219
220 struct rtprio lwp_rtprio; /* Realtime priority. */
221#define lwp_endcopy lwp_md
222
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223 struct mdproc lwp_md; /* Any machine-dependent fields. */
224
225 struct thread *lwp_thread; /* backpointer to proc's thread */
7adb15b6 226 void *lwp_unused01; /* for future fields */
a591f597 227 struct kqueue lwp_kqueue; /* for select/poll */
fd399d96 228 uint64_t lwp_kqueue_serial; /* for select/poll */
e2b148c6 229 struct lwkt_token lwp_token; /* per-lwp token for signal/state */
94f98873 230 struct spinlock lwp_spin; /* spinlock for signal handling */
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231 void *lwp_reserveds1; /* reserved for lwp_saveusp */
232 void *lwp_reserveds2; /* reserved for lwp_saveupc */
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233};
234
984263bc 235struct proc {
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236 LIST_ENTRY(proc) p_list; /* List of all processes. */
237
238 /* substructures: */
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239 struct ucred *p_ucred; /* Process owner's identity. */
240 struct filedesc *p_fd; /* Ptr to open files structure. */
ef09c3ed 241 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */
c46d7673 242 struct plimit *p_limit; /* Process limits. */
08f2f1bb 243 struct pstats *p_stats;
f2df0f7c 244 u_int p_mqueue_cnt; /* Count of open mqueues. */
51818c08 245 long p_waitgen; /* wait interlock allows late signal */
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246 struct sigacts *p_sigacts;
247#define p_sigignore p_sigacts->ps_sigignore
248#define p_sigcatch p_sigacts->ps_sigcatch
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249#define p_rlimit p_limit->pl_rlimit
250
4643740a 251 int p_flags; /* P_* flags. */
164b8401 252 enum procstat p_stat; /* S* process status. */
c46d7673 253 char p_pad1[3];
984263bc 254
c46d7673 255 pid_t p_pid; /* Process identifier. */
984263bc 256 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */
c46d7673 257 struct proc *p_pptr; /* Pointer to parent process. */
984263bc 258 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */
70d3d461 259 struct proclist p_children; /* Pointer to list of children. */
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260 struct callout p_ithandle; /* for scheduling p_realtimer */
261 struct varsymset p_varsymset;
c4df9635 262 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */
984263bc 263
c46d7673 264 pid_t p_oppid; /* Save parent pid during ptrace. XXX */
984263bc 265
d3313941 266 struct vmspace *p_vmspace; /* Current address space. */
984263bc 267
08f2f1bb 268 unsigned int p_swtime; /* Time swapped in or out */
984263bc 269
c46d7673 270 struct itimerval p_realtimer; /* Alarm timer. */
ef09c3ed 271 struct itimerval p_timer[3]; /* Virtual-time timers. */
984263bc 272
c46d7673 273 int p_traceflag; /* Kernel trace points. */
29f58392 274 struct ktrace_node *p_tracenode; /* Trace to vnode. */
984263bc 275
c46d7673 276 sigset_t p_siglist; /* Signals arrived but not delivered. */
984263bc 277
c46d7673 278 struct vnode *p_textvp; /* Vnode of executable. */
8ba5f7ef 279 struct nchandle p_textnch; /* namecache handle of executable. */
984263bc 280
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281 unsigned int p_stops; /* procfs event bitmask */
282 unsigned int p_stype; /* procfs stop event type */
c46d7673 283 char p_step; /* procfs stop *once* flag */
984263bc 284 unsigned char p_pfsflags; /* procfs flags */
51818c08 285 char p_pad2[2];
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286 struct sigiolst p_sigiolst; /* list of sigio sources */
287 int p_sigparent; /* signal to parent on exit */
c46d7673 288 struct klist p_klist; /* knotes attached to this process */
984263bc 289
ef09c3ed 290 struct timeval p_start; /* start time for a process */
ef09c3ed 291
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292 struct rusage p_ru; /* stats for this proc */
293 struct rusage p_cru; /* sum of stats for reaped children */
3573cf7b 294 void *p_unused01;
fde7ac71 295
984263bc 296/* The following fields are all copied upon creation in fork. */
2966ed3e 297#define p_startcopy p_comm
984263bc 298
ef09c3ed 299 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */
51818c08 300 char p_pad3;
c46d7673 301 char p_nice; /* Process "nice" value. */
0d355d3b 302 char p_pad4;
315b8b8b 303 int p_osrel; /* release date for binary ELF note */
984263bc 304
c46d7673 305 struct pgrp *p_pgrp; /* Pointer to process group. */
984263bc 306
c46d7673 307 struct sysentvec *p_sysent; /* System call dispatch information. */
984263bc 308
93328593 309 struct uprof p_prof; /* Profiling arguments. */
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310 struct rtprio p_rtprio; /* Realtime priority. */
311 struct pargs *p_args;
0d355d3b 312 u_short p_xstat; /* Exit status or last stop signal */
e7e1189f 313 u_short p_depth; /* Used to downscale resource limits */
8c72e3d5 314
aa166ad1 315 int p_ionice;
3573cf7b 316 void *p_unused02;
984263bc 317/* End area that is copied on creation. */
3573cf7b 318#define p_endcopy p_unused02
c46d7673 319 u_short p_acflag; /* Accounting flags. */
c46d7673 320
0d355d3b 321 int p_lock; /* Prevent proc destruction */
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322 int p_nthreads; /* Number of threads in this process. */
323 int p_nstopped; /* Number of stopped threads. */
324 int p_lasttid; /* Last tid used. */
3e291793 325 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */
c46d7673 326 void *p_aioinfo; /* ASYNC I/O info */
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327 int p_wakeup; /* thread id XXX lwp */
328 struct proc *p_peers; /* XXX lwp */
329 struct proc *p_leader; /* XXX lwp */
c46d7673 330 void *p_emuldata; /* process-specific emulator state */
c46d7673 331 struct usched *p_usched; /* Userland scheduling control */
39005e16 332 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */
c46d7673 333 int p_numposixlocks; /* number of POSIX locks */
8ba5f7ef 334 void (*p_userret)(void);/* p: return-to-user hook */
ef09c3ed 335
c0b8a06d 336 struct spinlock p_spin; /* Spinlock for LWP access to proc */
5686ec5a 337 struct lwkt_token p_token; /* Token for LWP access to proc */
79757ed0 338 struct sem_undo *p_sem_undo; /* Fast semaphore tracking lookup */
c3ab84cc 339 void *p_drv_priv; /* scp linkage (for syscons) */
a86ce0cd 340 void *p_vmm;
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341 cpulock_t p_vmm_cpulock; /* count cpus in and kickout lock */
342 cpumask_t p_vmm_cpumask; /* cpus entering or in vmm */
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343 struct sys_upmap *p_upmap; /* user RO mappable per-process page */
344 forkid_t p_forkid; /* unique forkid */
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345 struct sysreaper *p_reaper; /* reaper control */
346 void *p_reserveds[3]; /* reserved for future */
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347};
348
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349#define lwp_wchan lwp_thread->td_wchan
350#define lwp_wmesg lwp_thread->td_wmesg
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351#define p_session p_pgrp->pg_session
352#define p_pgid p_pgrp->pg_id
353
984263bc 354/* These flags are kept in p_flags. */
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355#define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */
356#define P_CONTROLT 0x00002 /* Has a controlling terminal */
344ad853 357#define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */
9b655f0e 358#define P_SYSVSEM 0x00008 /* Might have SysV semaphores */
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359#define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */
360#define P_PROFIL 0x00020 /* Has started profiling */
b2a6ad87 361#define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */
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362#define P_SCMOUSE 0x00080 /* Process is held by syscons ioctl */
363 /* was: Sleep is interruptible */
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364#define P_SUGID 0x00100 /* Had set id privileges since last exec */
365#define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */
51818c08 366#define P_MAYBETHREADED 0x00400 /* might be threaded optimization */
4643740a 367#define P_TRACED 0x00800 /* Debugged process being traced */
344ad853 368#define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */
e3161323 369#define P_WEXIT 0x02000 /* Working on exiting (master exit) */
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370#define P_EXEC 0x04000 /* Process called exec */
371#define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */
984263bc 372
e1ea8b24 373#define P_LOWMEMKILL 0x00010000 /* trying to kill due to low memory */
7adb15b6 374#define P_UNUSED17 0x00020000
984263bc 375
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376#define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */
377#define P_UNUSED19 0x00080000 /* was: Now in a zombied state */
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378
379/* Marked a kernel thread */
4643740a 380#define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */
4f7720f0 381#define P_UNUSED21 0x00200000 /* was: Process is really a kernel thread */
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382#define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */
383
384#define P_JAILED 0x01000000 /* Process is in jail */
385#define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */
386#define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */
387#define P_INEXEC 0x08000000 /* Process is in execve(). */
e7e1189f 388#define P_DIDCHROOT 0x10000000 /* Did at least one chroot */
7adb15b6 389#define P_UNUSED29 0x20000000
c0b8a06d 390#define P_XCPU 0x40000000 /* SIGXCPU */
984263bc 391
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392#define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */
393#define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */
394#define LWP_SINTR 0x0000008 /* Sleep is interruptible. */
395#define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */
396#define LWP_UNUSED20 0x0000020
397#define LWP_UNUSED40 0x0000040
398#define LWP_UNUSED80 0x0000080
399#define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */
400#define LWP_PAGING 0x0000200 /* Currently in vm_fault */
401
7a313817 402/*
4643740a 403 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland
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404 * and has been counted in the process stop-threads-count, but
405 * may still be running in kernel-land.
406 *
4643740a 407 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return
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408 * to userland. p_nthreads will not be decremented until the
409 * thread has actually exited.
410 */
4643740a 411#define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */
62ae46c9 412#define LWP_MP_WEXIT 0x0000002 /* working on exiting (lwpuserret()) */
4643740a 413#define LWP_MP_WSTOP 0x0000004 /* working on stopping */
e28d8b15 414#define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */
de4d4cb0 415#define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */
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416#define LWP_MP_VNLRU 0x0000020 /* check excessive vnode allocations (lwpuserret()) */
417
418#define LWP_MP_URETMASK (LWP_MP_WEXIT | LWP_MP_VNLRU)
08f2f1bb 419
3e291793 420#define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree)
fde7ac71 421#define FOREACH_LWP_IN_PROC(lp, p) \
3e291793 422 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree)
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423#define ONLY_LWP_IN_PROC(p) _only_lwp_in_proc(p, __func__)
424
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425struct procglob {
426 struct lwkt_token proc_token;
427 struct proclist allproc; /* locked by proc_token */
428 struct pgrplist allpgrp; /* locked by proc_token */
429 struct sesslist allsess; /* locked by proc_token */
430 void *pad01; /* pad for clarity */
431} __cachealign;
432
dee5e116 433#ifdef _KERNEL
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434static inline struct lwp *
435_only_lwp_in_proc(struct proc *p, const char *caller)
436{
437 if (p->p_nthreads != 1) {
438 panic("%s: proc %p (pid %d cmd %s) has more than one thread",
439 caller, p, p->p_pid, p->p_comm);
440 }
441 return RB_ROOT(&p->p_lwp_tree);
442}
dee5e116 443#endif
fde7ac71 444
5dfd06ac 445/*
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446 * We use process IDs <= PID_MAX. NO_PID must also fit in a pid_t and
447 * is used to represent "no process group".
5dfd06ac 448 */
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449#define PID_MAX 999999
450#define NO_PID 0x7FFFFFFF
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451
452#define SESS_LEADER(p) ((p)->p_session->s_leader == (p))
453
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454#ifdef _KERNEL
455
456#ifdef MALLOC_DECLARE
457MALLOC_DECLARE(M_SESSION);
fb2a331e 458MALLOC_DECLARE(M_PROC);
f6c36234 459MALLOC_DECLARE(M_LWP);
984263bc 460MALLOC_DECLARE(M_SUBPROC);
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461MALLOC_DECLARE(M_PARGS);
462#endif
463
9eaf083f 464/* for priv_check_cred() */
e4700d00 465#define NULL_CRED_OKAY 0x2
984263bc 466
95db0b6a 467/* Handy macro to determine if p1 can mangle p2 */
984263bc 468
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469#define PRISON_CHECK(cr1, cr2) \
470 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison)
984263bc 471
984263bc 472/*
8a8d5d85 473 * STOPEVENT
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474 */
475extern void stopevent(struct proc*, unsigned int, unsigned int);
476#define STOPEVENT(p,e,v) \
477 do { \
478 if ((p)->p_stops & (e)) { \
984263bc 479 stopevent(p,e,v); \
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480 } \
481 } while (0)
482
0d355d3b 483/*
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484 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio,
485 * and signaling code (e.g. ksignal()).
486 *
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487 * MPSAFE
488 */
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489#define PHOLD(p) phold((p))
490#define PRELE(p) prele((p))
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491#define PHOLDZOMB(p) pholdzomb((p))
492#define PRELEZOMB(p) prelezomb((p))
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493#define PSTALL(p, msg, n) \
494 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0)
984263bc 495
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496#define STOPLWP(p, lp) \
497 (((p)->p_stat == SSTOP || (p)->p_stat == SCORE) && \
498 ((lp)->lwp_mpflags & LWP_MP_WEXIT) == 0)
499
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500/*
501 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work
502 * atomic ops because they can occur from an IPI.
503 * MPSAFE
504 */
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505#define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1)
506#define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1)
cc1d939b 507
984263bc 508extern struct proc proc0; /* Process slot for swapper. */
08f2f1bb 509extern struct lwp lwp0; /* LWP slot for swapper. */
b7c628e4 510extern struct thread thread0; /* Thread slot for swapper. */
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511extern int nprocs, maxproc; /* Current and max number of procs. */
512extern int maxprocperuid; /* Max procs per uid. */
984263bc 513
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514extern struct proc *initproc; /* Process slot for init */
515extern struct thread *pagethread, *updatethread;
984263bc 516
984263bc 517/*
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518 * Scheduler independant variables. The primary scheduler polling frequency,
519 * the maximum ESTCPU value, and the weighting factor for nice values. A
520 * cpu bound program's estcpu will increase to ESTCPUMAX - 1.
984263bc 521 */
a46fac56 522#define ESTCPUFREQ 50
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523
524extern u_long ps_arg_cache_limit;
525extern int ps_argsopen;
28c57d20 526extern int ps_showallprocs;
984263bc 527
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528struct proc *pfind (pid_t); /* Find process by id w/ref */
529struct proc *pfindn (pid_t); /* Find process by id wo/ref */
530struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */
531struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */
532void pgref (struct pgrp *); /* Ref pgrp preventing disposal */
533void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */
984263bc 534
a2a5ad0d 535struct globaldata;
91bd9c1e 536struct lwp_params;
984263bc 537
b153f746 538int enterpgrp (struct proc *p, pid_t pgid, int mksess);
51e64ff2 539void proc_add_allproc(struct proc *p);
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540void proc_move_allproc_zombie(struct proc *);
541void proc_remove_zombie(struct proc *);
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542void allproc_scan(int (*callback)(struct proc *, void *), void *data,
543 int segmented);
544void alllwp_scan(int (*callback)(struct lwp *, void *), void *data,
545 int segmented);
5bf0d9b5 546void zombproc_scan(int (*callback)(struct proc *, void *), void *data);
b153f746 547void fixjobc (struct proc *p, struct pgrp *pgrp, int entering);
553ea3c8 548void updatepcpu(struct lwp *, int, int);
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549int inferior (struct proc *p);
550int leavepgrp (struct proc *p);
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551void sess_hold(struct session *sp);
552void sess_rele(struct session *sp);
b153f746 553void procinit (void);
a8d3ab53 554void procinsertinit(struct proc *p);
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555void sessinsertinit(struct session *sess);
556void pgrpinsertinit(struct pgrp *pg);
26a0694b 557void relscurproc(struct proc *curp);
b153f746 558int p_trespass (struct ucred *cr1, struct ucred *cr2);
9a379a4a 559void setrunnable (struct lwp *);
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560void proc_stop (struct proc *, int);
561void proc_unstop (struct proc *, int);
666ff13c 562void sleep_early_gdinit (struct globaldata *);
fc17ad60 563void sleep_gdinit (struct globaldata *);
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564thread_t cpu_heavy_switch (struct thread *);
565thread_t cpu_lwkt_switch (struct thread *);
b153f746 566
c6880072 567void cpu_lwp_exit (void) __dead2;
b153f746 568void cpu_thread_exit (void) __dead2;
51818c08 569void lwp_exit (int masterexit, void *waddr) __dead2;
c6880072 570void lwp_dispose (struct lwp *);
dc52e1cc 571int killalllwps (int);
b153f746 572void exit1 (int) __dead2;
bb3cd951 573void cpu_fork (struct lwp *, struct lwp *, int);
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574int cpu_prepare_lwp(struct lwp *, struct lwp_params *);
575void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *);
0cfcada1 576void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg);
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577int fork1 (struct lwp *, int, struct proc **);
578void start_forked_proc (struct lwp *, struct proc *);
b153f746 579int trace_req (struct proc *);
b153f746 580void cpu_thread_wait (struct thread *);
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581void setsugid (void);
582void faultin (struct proc *p);
344ad853 583void swapin_request (void);
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584void phold (struct proc *);
585void prele (struct proc *);
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586int pholdzomb (struct proc *);
587void prelezomb (struct proc *);
82354ad8 588void pstall (struct proc *, const char *, int);
62ae46c9 589void lwpuserret(struct lwp *);
9072066a 590void lwpkthreaddeferred(void);
87116512 591void proc_usermap(struct proc *p, int invfork);
0adbcbd6 592void proc_userunmap(struct proc *p);
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593void reaper_hold(struct sysreaper *reap);
594void reaper_drop(struct sysreaper *reap);
595struct sysreaper *reaper_exit(struct proc *p);
596void reaper_init(struct proc *p, struct sysreaper *reap);
597struct proc *reaper_get(struct sysreaper *reap);
984263bc 598
b153f746 599u_int32_t procrunnable (void);
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600
601#endif /* _KERNEL */
602
03d6a592 603#endif /* _KERNEL || _KERNEL_STRUCTURES */
984263bc 604#endif /* !_SYS_PROC_H_ */