1/* $OpenBSD: proc.h,v 1.361 2024/05/20 10:32:20 claudio Exp $ */ 2/* $NetBSD: proc.h,v 1.44 1996/04/22 01:23:21 christos Exp $ */ 3 4/*- 5 * Copyright (c) 1986, 1989, 1991, 1993 6 * The Regents of the University of California. All rights reserved. 7 * (c) UNIX System Laboratories, Inc. 8 * All or some portions of this file are derived from material licensed 9 * to the University of California by American Telephone and Telegraph 10 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11 * the permission of UNIX System Laboratories, Inc. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)proc.h 8.8 (Berkeley) 1/21/94 38 */ 39 40#ifndef _SYS_PROC_H_ 41#define _SYS_PROC_H_ 42 43#include <machine/proc.h> /* Machine-dependent proc substruct. */ 44#include <sys/selinfo.h> /* For struct selinfo */ 45#include <sys/syslimits.h> /* For LOGIN_NAME_MAX */ 46#include <sys/queue.h> 47#include <sys/timeout.h> /* For struct timeout */ 48#include <sys/event.h> /* For struct klist */ 49#include <sys/mutex.h> /* For struct mutex */ 50#include <sys/resource.h> /* For struct rusage */ 51#include <sys/rwlock.h> /* For struct rwlock */ 52#include <sys/sigio.h> /* For struct sigio */ 53 54#ifdef _KERNEL 55#include <sys/atomic.h> 56#define __need_process 57#endif 58 59/* 60 * One structure allocated per session. 61 */ 62struct process; 63struct session { 64 int s_count; /* Ref cnt; pgrps in session. */ 65 struct process *s_leader; /* Session leader. */ 66 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */ 67 struct tty *s_ttyp; /* Controlling terminal. */ 68 char s_login[LOGIN_NAME_MAX]; /* Setlogin() name. */ 69 pid_t s_verauthppid; 70 uid_t s_verauthuid; 71 struct timeout s_verauthto; 72}; 73 74void zapverauth(/* struct session */ void *); 75 76/* 77 * One structure allocated per process group. 78 */ 79struct pgrp { 80 LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */ 81 LIST_HEAD(, process) pg_members;/* Pointer to pgrp members. */ 82 struct session *pg_session; /* Pointer to session. */ 83 struct sigiolst pg_sigiolst; /* List of sigio structures. */ 84 pid_t pg_id; /* Pgrp id. */ 85 int pg_jobc; /* # procs qualifying pgrp for job control */ 86}; 87 88/* 89 * time usage: accumulated times in ticks 90 * Once a second, each thread's immediate counts (p_[usi]ticks) are 91 * accumulated into these. 92 */ 93struct tusage { 94 struct timespec tu_runtime; /* Realtime. */ 95 uint64_t tu_uticks; /* Statclock hits in user mode. */ 96 uint64_t tu_sticks; /* Statclock hits in system mode. */ 97 uint64_t tu_iticks; /* Statclock hits processing intr. */ 98}; 99 100/* 101 * Description of a process. 102 * 103 * These structures contain the information needed to manage a thread of 104 * control, known in UN*X as a process; it has references to substructures 105 * containing descriptions of things that the process uses, but may share 106 * with related processes. 107 * 108 * struct process is the higher level process containing information 109 * shared by all threads in a process, while struct proc contains the 110 * run-time information needed by threads. 111 */ 112#ifdef __need_process 113struct futex; 114LIST_HEAD(futex_list, futex); 115struct proc; 116struct tslpentry; 117TAILQ_HEAD(tslpqueue, tslpentry); 118struct unveil; 119 120struct pinsyscall { 121 vaddr_t pn_start; 122 vaddr_t pn_end; 123 u_int *pn_pins; /* array of offsets indexed by syscall# */ 124 int pn_npins; /* number of entries in table */ 125}; 126 127/* 128 * Locks used to protect struct members in this file: 129 * I immutable after creation 130 * a atomic operations 131 * K kernel lock 132 * m this process' `ps_mtx' 133 * p this process' `ps_lock' 134 * R rlimit_lock 135 * S scheduler lock 136 * T itimer_mtx 137 */ 138struct process { 139 /* 140 * ps_mainproc is the original thread in the process. 141 * It's only still special for the handling of 142 * some signal and ptrace behaviors that need to be fixed. 143 */ 144 struct proc *ps_mainproc; 145 struct ucred *ps_ucred; /* Process owner's identity. */ 146 147 LIST_ENTRY(process) ps_list; /* List of all processes. */ 148 TAILQ_HEAD(,proc) ps_threads; /* [K|m] Threads in this process. */ 149 150 LIST_ENTRY(process) ps_pglist; /* List of processes in pgrp. */ 151 struct process *ps_pptr; /* Pointer to parent process. */ 152 LIST_ENTRY(process) ps_sibling; /* List of sibling processes. */ 153 LIST_HEAD(, process) ps_children;/* Pointer to list of children. */ 154 LIST_ENTRY(process) ps_hash; /* Hash chain. */ 155 156 /* 157 * An orphan is the child that has been re-parented to the 158 * debugger as a result of attaching to it. Need to keep 159 * track of them for parent to be able to collect the exit 160 * status of what used to be children. 161 */ 162 LIST_ENTRY(process) ps_orphan; /* List of orphan processes. */ 163 LIST_HEAD(, process) ps_orphans;/* Pointer to list of orphans. */ 164 165 struct sigiolst ps_sigiolst; /* List of sigio structures. */ 166 struct sigacts *ps_sigacts; /* [I] Signal actions, state */ 167 struct vnode *ps_textvp; /* Vnode of executable. */ 168 struct filedesc *ps_fd; /* Ptr to open files structure */ 169 struct vmspace *ps_vmspace; /* Address space */ 170 pid_t ps_pid; /* Process identifier. */ 171 172 struct futex_list ps_ftlist; /* futexes attached to this process */ 173 struct tslpqueue ps_tslpqueue; /* [p] queue of threads in thrsleep */ 174 struct rwlock ps_lock; /* per-process rwlock */ 175 struct mutex ps_mtx; /* per-process mutex */ 176 177/* The following fields are all zeroed upon creation in process_new. */ 178#define ps_startzero ps_klist 179 struct klist ps_klist; /* knotes attached to this process */ 180 u_int ps_flags; /* [a] PS_* flags. */ 181 int ps_siglist; /* Signals pending for the process. */ 182 183 struct proc *ps_single; /* [m] Thread for single-threading. */ 184 u_int ps_singlecnt; /* [m] Number of threads to suspend. */ 185 u_int ps_exitcnt; /* [m] Number of threads in exit1. */ 186 187 int ps_traceflag; /* Kernel trace points. */ 188 struct vnode *ps_tracevp; /* Trace to vnode. */ 189 struct ucred *ps_tracecred; /* Creds for writing trace */ 190 191 u_int ps_xexit; /* Exit status for wait */ 192 int ps_xsig; /* Stopping or killing signal */ 193 194 pid_t ps_ppid; /* [a] Cached parent pid */ 195 pid_t ps_oppid; /* [a] Save parent pid during ptrace. */ 196 int ps_ptmask; /* Ptrace event mask */ 197 struct ptrace_state *ps_ptstat;/* Ptrace state */ 198 199 struct rusage *ps_ru; /* sum of stats for dead threads. */ 200 struct tusage ps_tu; /* accumulated times. */ 201 struct rusage ps_cru; /* sum of stats for reaped children */ 202 struct itimerspec ps_timer[3]; /* [m] ITIMER_REAL timer */ 203 /* [T] ITIMER_{VIRTUAL,PROF} timers */ 204 struct timeout ps_rucheck_to; /* [] resource limit check timer */ 205 time_t ps_nextxcpu; /* when to send next SIGXCPU, */ 206 /* in seconds of process runtime */ 207 208 u_int64_t ps_wxcounter; 209 210 struct unveil *ps_uvpaths; /* unveil vnodes and names */ 211 ssize_t ps_uvvcount; /* count of unveil vnodes held */ 212 size_t ps_uvncount; /* count of unveil names allocated */ 213 int ps_uvdone; /* no more unveil is permitted */ 214 215/* End area that is zeroed on creation. */ 216#define ps_endzero ps_startcopy 217 218/* The following fields are all copied upon creation in process_new. */ 219#define ps_startcopy ps_limit 220 struct plimit *ps_limit; /* [m,R] Process limits. */ 221 struct pgrp *ps_pgrp; /* Pointer to process group. */ 222 223 char ps_comm[_MAXCOMLEN]; /* command name, incl NUL */ 224 225 vaddr_t ps_strings; /* User pointers to argv/env */ 226 vaddr_t ps_auxinfo; /* User pointer to auxinfo */ 227 vaddr_t ps_timekeep; /* User pointer to timekeep */ 228 vaddr_t ps_sigcode; /* [I] User pointer to signal code */ 229 vaddr_t ps_sigcoderet; /* [I] User ptr to sigreturn retPC */ 230 u_long ps_sigcookie; /* [I] */ 231 u_int ps_rtableid; /* [a] Process routing table/domain. */ 232 char ps_nice; /* Process "nice" value. */ 233 234 struct uprof { /* profile arguments */ 235 caddr_t pr_base; /* buffer base */ 236 size_t pr_size; /* buffer size */ 237 u_long pr_off; /* pc offset */ 238 u_int pr_scale; /* pc scaling */ 239 } ps_prof; 240 241 u_int32_t ps_acflag; /* Accounting flags. */ 242 243 uint64_t ps_pledge; /* [m] pledge promises */ 244 uint64_t ps_execpledge; /* [m] execpledge promises */ 245 246 int64_t ps_kbind_cookie; /* [m] */ 247 u_long ps_kbind_addr; /* [m] */ 248/* an address that can't be in userspace or kernelspace */ 249#define BOGO_PC (u_long)-1 250 251 struct pinsyscall ps_pin; /* static or ld.so */ 252 struct pinsyscall ps_libcpin; /* libc.so, from pinsyscalls(2) */ 253 254/* End area that is copied on creation. */ 255#define ps_endcopy ps_threadcnt 256 u_int ps_threadcnt; /* [m] Number of threads. */ 257 258 struct timespec ps_start; /* starting uptime. */ 259 struct timeout ps_realit_to; /* [m] ITIMER_REAL timeout */ 260}; 261 262#define ps_session ps_pgrp->pg_session 263#define ps_pgid ps_pgrp->pg_id 264 265#endif /* __need_process */ 266 267/* 268 * These flags are kept in ps_flags. 269 */ 270#define PS_CONTROLT 0x00000001 /* Has a controlling terminal. */ 271#define PS_EXEC 0x00000002 /* Process called exec. */ 272#define PS_INEXEC 0x00000004 /* Process is doing an exec right now */ 273#define PS_EXITING 0x00000008 /* Process is exiting. */ 274#define PS_SUGID 0x00000010 /* Had set id privs since last exec. */ 275#define PS_SUGIDEXEC 0x00000020 /* last execve() was set[ug]id */ 276#define PS_PPWAIT 0x00000040 /* Parent waits for exec/exit. */ 277#define PS_ISPWAIT 0x00000080 /* Is parent of PPWAIT child. */ 278#define PS_PROFIL 0x00000100 /* Has started profiling. */ 279#define PS_TRACED 0x00000200 /* Being ptraced. */ 280#define PS_WAITED 0x00000400 /* Stopped proc was waited for. */ 281#define PS_COREDUMP 0x00000800 /* Busy coredumping */ 282#define PS_SINGLEEXIT 0x00001000 /* Other threads must die. */ 283#define PS_SINGLEUNWIND 0x00002000 /* Other threads must unwind. */ 284#define PS_NOZOMBIE 0x00004000 /* No signal or zombie at exit. */ 285#define PS_STOPPED 0x00008000 /* Just stopped, need sig to parent. */ 286#define PS_SYSTEM 0x00010000 /* No sigs, stats or swapping. */ 287#define PS_EMBRYO 0x00020000 /* New process, not yet fledged */ 288#define PS_ZOMBIE 0x00040000 /* Dead and ready to be waited for */ 289#define PS_NOBROADCASTKILL 0x00080000 /* Process excluded from kill -1. */ 290#define PS_PLEDGE 0x00100000 /* Has called pledge(2) */ 291#define PS_WXNEEDED 0x00200000 /* Process allowed to violate W^X */ 292#define PS_EXECPLEDGE 0x00400000 /* Has exec pledges */ 293#define PS_ORPHAN 0x00800000 /* Process is on an orphan list */ 294#define PS_CHROOT 0x01000000 /* Process is chrooted */ 295#define PS_NOBTCFI 0x02000000 /* No Branch Target CFI */ 296#define PS_ITIMER 0x04000000 /* Virtual interval timers running */ 297#define PS_PIN 0x08000000 /* ld.so or static syscall pin */ 298#define PS_LIBCPIN 0x10000000 /* libc.so syscall pin */ 299 300#define PS_BITS \ 301 ("\20" "\01CONTROLT" "\02EXEC" "\03INEXEC" "\04EXITING" "\05SUGID" \ 302 "\06SUGIDEXEC" "\07PPWAIT" "\010ISPWAIT" "\011PROFIL" "\012TRACED" \ 303 "\013WAITED" "\014COREDUMP" "\015SINGLEEXIT" "\016SINGLEUNWIND" \ 304 "\017NOZOMBIE" "\020STOPPED" "\021SYSTEM" "\022EMBRYO" "\023ZOMBIE" \ 305 "\024NOBROADCASTKILL" "\025PLEDGE" "\026WXNEEDED" "\027EXECPLEDGE" \ 306 "\030ORPHAN" "\031CHROOT" "\032NOBTCFI" "\033ITIMER") 307 308 309struct kcov_dev; 310struct lock_list_entry; 311struct kqueue; 312 313struct p_inentry { 314 u_long ie_serial; 315 vaddr_t ie_start; 316 vaddr_t ie_end; 317}; 318 319/* 320 * Locks used to protect struct members in this file: 321 * I immutable after creation 322 * S scheduler lock 323 * U uidinfolk 324 * l read only reference, see lim_read_enter() 325 * o owned (modified only) by this thread 326 * m this proc's' `p->p_p->ps_mtx' 327 */ 328struct proc { 329 TAILQ_ENTRY(proc) p_runq; /* [S] current run/sleep queue */ 330 LIST_ENTRY(proc) p_list; /* List of all threads. */ 331 332 struct process *p_p; /* [I] The process of this thread. */ 333 TAILQ_ENTRY(proc) p_thr_link; /* [K|m] Threads in a process linkage. */ 334 335 TAILQ_ENTRY(proc) p_fut_link; /* Threads in a futex linkage. */ 336 struct futex *p_futex; /* Current sleeping futex. */ 337 338 /* substructures: */ 339 struct filedesc *p_fd; /* copy of p_p->ps_fd */ 340 struct vmspace *p_vmspace; /* [I] copy of p_p->ps_vmspace */ 341 struct p_inentry p_spinentry; /* [o] cache for SP check */ 342 343 int p_flag; /* P_* flags. */ 344 u_char p_spare; /* unused */ 345 char p_stat; /* [S] S* process status. */ 346 u_char p_runpri; /* [S] Runqueue priority */ 347 u_char p_descfd; /* if not 255, fdesc permits this fd */ 348 349 pid_t p_tid; /* Thread identifier. */ 350 LIST_ENTRY(proc) p_hash; /* Hash chain. */ 351 352/* The following fields are all zeroed upon creation in fork. */ 353#define p_startzero p_dupfd 354 int p_dupfd; /* Sideways return value from filedescopen. XXX */ 355 356 /* scheduling */ 357 int p_cpticks; /* Ticks of cpu time. */ 358 const volatile void *p_wchan; /* [S] Sleep address. */ 359 struct timeout p_sleep_to;/* timeout for tsleep() */ 360 const char *p_wmesg; /* [S] Reason for sleep. */ 361 fixpt_t p_pctcpu; /* [S] %cpu for this thread */ 362 u_int p_slptime; /* [S] Time since last blocked. */ 363 u_int p_uticks; /* Statclock hits in user mode. */ 364 u_int p_sticks; /* Statclock hits in system mode. */ 365 u_int p_iticks; /* Statclock hits processing intr. */ 366 struct cpu_info * volatile p_cpu; /* [S] CPU we're running on. */ 367 368 struct rusage p_ru; /* Statistics */ 369 struct tusage p_tu; /* accumulated times. */ 370 371 struct plimit *p_limit; /* [l] read ref. of p_p->ps_limit */ 372 struct kcov_dev *p_kd; /* kcov device handle */ 373 struct lock_list_entry *p_sleeplocks; /* WITNESS lock tracking */ 374 struct kqueue *p_kq; /* [o] select/poll queue of evts */ 375 unsigned long p_kq_serial; /* [o] to check against enqueued evts */ 376 377 int p_siglist; /* [a] Signals arrived & not delivered*/ 378 379/* End area that is zeroed on creation. */ 380#define p_endzero p_startcopy 381 382/* The following fields are all copied upon creation in fork. */ 383#define p_startcopy p_sigmask 384 sigset_t p_sigmask; /* [o] Current signal mask */ 385 386 char p_name[_MAXCOMLEN]; /* thread name, incl NUL */ 387 u_char p_slppri; /* [S] Sleeping priority */ 388 u_char p_usrpri; /* [S] Priority based on p_estcpu & ps_nice */ 389 u_int p_estcpu; /* [S] Time averaged val of p_cpticks */ 390 int p_pledge_syscall; /* Cache of current syscall */ 391 392 struct ucred *p_ucred; /* [o] cached credentials */ 393 struct sigaltstack p_sigstk; /* sp & on stack state variable */ 394 395 u_long p_prof_addr; /* tmp storage for profiling addr until AST */ 396 u_long p_prof_ticks; /* tmp storage for profiling ticks until AST */ 397 398/* End area that is copied on creation. */ 399#define p_endcopy p_addr 400 struct user *p_addr; /* Kernel virtual addr of u-area */ 401 struct mdproc p_md; /* Any machine-dependent fields. */ 402 403 sigset_t p_oldmask; /* [o] Saved mask from before sigpause */ 404 int p_sisig; /* For core dump/debugger XXX */ 405 union sigval p_sigval; /* For core dump/debugger XXX */ 406 long p_sitrapno; /* For core dump/debugger XXX */ 407 int p_sicode; /* For core dump/debugger XXX */ 408}; 409 410/* Status values. */ 411#define SIDL 1 /* Thread being created by fork. */ 412#define SRUN 2 /* Currently runnable. */ 413#define SSLEEP 3 /* Sleeping on an address. */ 414#define SSTOP 4 /* Debugging or suspension. */ 415#define SZOMB 5 /* unused */ 416#define SDEAD 6 /* Thread is almost gone */ 417#define SONPROC 7 /* Thread is currently on a CPU. */ 418 419#define P_ZOMBIE(p) ((p)->p_stat == SDEAD) 420#define P_HASSIBLING(p) ((p)->p_p->ps_threadcnt > 1) 421 422/* 423 * These flags are per-thread and kept in p_flag 424 */ 425#define P_INKTR 0x00000001 /* In a ktrace op, don't recurse */ 426#define P_PROFPEND 0x00000002 /* SIGPROF needs to be posted */ 427#define P_ALRMPEND 0x00000004 /* SIGVTALRM needs to be posted */ 428#define P_SIGSUSPEND 0x00000008 /* Need to restore before-suspend mask*/ 429#define P_CANTSLEEP 0x00000010 /* insomniac thread */ 430#define P_WSLEEP 0x00000020 /* Working on going to sleep. */ 431#define P_SINTR 0x00000080 /* Sleep is interruptible. */ 432#define P_SYSTEM 0x00000200 /* No sigs, stats or swapping. */ 433#define P_TIMEOUT 0x00000400 /* Timing out during sleep. */ 434#define P_WEXIT 0x00002000 /* Working on exiting. */ 435#define P_OWEUPC 0x00008000 /* Owe proc an addupc() at next ast. */ 436#define P_SUSPSINGLE 0x00080000 /* Need to stop for single threading. */ 437#define P_CONTINUED 0x00800000 /* Proc has continued from a stopped state. */ 438#define P_THREAD 0x04000000 /* Only a thread, not a real process */ 439#define P_SUSPSIG 0x08000000 /* Stopped from signal. */ 440#define P_CPUPEG 0x40000000 /* Do not move to another cpu. */ 441 442#define P_BITS \ 443 ("\20" "\01INKTR" "\02PROFPEND" "\03ALRMPEND" "\04SIGSUSPEND" \ 444 "\05CANTSLEEP" "\06WSLEEP" "\010SINTR" "\012SYSTEM" "\013TIMEOUT" \ 445 "\016WEXIT" "\020OWEUPC" "\024SUSPSINGLE" "\027XX" \ 446 "\030CONTINUED" "\033THREAD" "\034SUSPSIG" "\035SOFTDEP" "\037CPUPEG") 447 448#define THREAD_PID_OFFSET 100000 449 450#ifdef _KERNEL 451 452struct uidinfo { 453 LIST_ENTRY(uidinfo) ui_hash; /* [U] */ 454 uid_t ui_uid; /* [I] */ 455 long ui_proccnt; /* [U] proc structs */ 456 long ui_lockcnt; /* [U] lockf structs */ 457}; 458 459struct uidinfo *uid_find(uid_t); 460void uid_release(struct uidinfo *); 461 462/* 463 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, 464 * as it is used to represent "no process group". 465 * We set PID_MAX to 99999 to keep it in 5 columns in ps 466 * When exposed to userspace, thread IDs have THREAD_PID_OFFSET 467 * added to keep them from overlapping the PID range. For them, 468 * we use a * a (0 .. 2^n] range for cheapness, picking 'n' such 469 * that 2^n + THREAD_PID_OFFSET and THREAD_PID_OFFSET have 470 * the same number of columns when printed. 471 */ 472#define PID_MAX 99999 473#define TID_MASK 0x7ffff 474 475#define NO_PID (PID_MAX+1) 476 477#define SESS_LEADER(pr) ((pr)->ps_session->s_leader == (pr)) 478#define SESSHOLD(s) ((s)->s_count++) 479#define SESSRELE(s) do { \ 480 if (--(s)->s_count == 0) { \ 481 timeout_del(&(s)->s_verauthto); \ 482 pool_put(&session_pool, (s)); \ 483 } \ 484} while (/* CONSTCOND */ 0) 485 486/* 487 * Flags to fork1(). 488 */ 489#define FORK_FORK 0x00000001 490#define FORK_VFORK 0x00000002 491#define FORK_IDLE 0x00000004 492#define FORK_PPWAIT 0x00000008 493#define FORK_SHAREFILES 0x00000010 494#define FORK_SYSTEM 0x00000020 495#define FORK_NOZOMBIE 0x00000040 496#define FORK_SHAREVM 0x00000080 497#define FORK_PTRACE 0x00000400 498 499#define EXIT_NORMAL 0x00000001 500#define EXIT_THREAD 0x00000002 501#define EXIT_THREAD_NOCHECK 0x00000003 502 503#define TIDHASH(tid) (&tidhashtbl[(tid) & tidhash]) 504extern LIST_HEAD(tidhashhead, proc) *tidhashtbl; 505extern u_long tidhash; 506 507#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) 508extern LIST_HEAD(pidhashhead, process) *pidhashtbl; 509extern u_long pidhash; 510 511#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) 512extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; 513extern u_long pgrphash; 514 515extern struct proc proc0; /* Process slot for swapper. */ 516extern struct process process0; /* Process slot for kernel threads. */ 517extern int nprocesses, maxprocess; /* Cur and max number of processes. */ 518extern int nthreads, maxthread; /* Cur and max number of threads. */ 519 520LIST_HEAD(proclist, proc); 521LIST_HEAD(processlist, process); 522extern struct processlist allprocess; /* List of all processes. */ 523extern struct processlist zombprocess; /* List of zombie processes. */ 524extern struct proclist allproc; /* List of all threads. */ 525 526extern struct process *initprocess; /* Process slot for init. */ 527extern struct proc *reaperproc; /* Thread slot for reaper. */ 528extern struct proc *syncerproc; /* filesystem syncer daemon */ 529 530extern struct pool process_pool; /* memory pool for processes */ 531extern struct pool proc_pool; /* memory pool for procs */ 532extern struct pool rusage_pool; /* memory pool for zombies */ 533extern struct pool ucred_pool; /* memory pool for ucreds */ 534extern struct pool session_pool; /* memory pool for sessions */ 535extern struct pool pgrp_pool; /* memory pool for pgrps */ 536 537void freepid(pid_t); 538 539struct process *prfind(pid_t); /* Find process by id. */ 540struct process *zombiefind(pid_t); /* Find zombie process by id. */ 541struct proc *tfind(pid_t); /* Find thread by id. */ 542struct pgrp *pgfind(pid_t); /* Find process group by id. */ 543struct proc *tfind_user(pid_t, struct process *); 544 /* Find thread by userspace id. */ 545void proc_printit(struct proc *p, const char *modif, 546 int (*pr)(const char *, ...)); 547 548int chgproccnt(uid_t uid, int diff); 549void enternewpgrp(struct process *, struct pgrp *, struct session *); 550void enterthispgrp(struct process *, struct pgrp *); 551int inferior(struct process *, struct process *); 552void leavepgrp(struct process *); 553void killjobc(struct process *); 554void preempt(void); 555void procinit(void); 556void setpriority(struct proc *, uint32_t, uint8_t); 557void setrunnable(struct proc *); 558void endtsleep(void *); 559int wakeup_proc(struct proc *, int); 560void unsleep(struct proc *); 561void reaper(void *); 562__dead void exit1(struct proc *, int, int, int); 563void exit2(struct proc *); 564void cpu_fork(struct proc *_curp, struct proc *_child, void *_stack, 565 void *_tcb, void (*_func)(void *), void *_arg); 566void cpu_exit(struct proc *); 567void process_initialize(struct process *, struct proc *); 568int fork1(struct proc *_curp, int _flags, void (*_func)(void *), 569 void *_arg, register_t *_retval, struct proc **_newprocp); 570int thread_fork(struct proc *_curp, void *_stack, void *_tcb, 571 pid_t *_tidptr, register_t *_retval); 572int groupmember(gid_t, struct ucred *); 573void dorefreshcreds(struct process *, struct proc *); 574void dosigsuspend(struct proc *, sigset_t); 575 576static inline void 577refreshcreds(struct proc *p) 578{ 579 struct process *pr = p->p_p; 580 581 /* this is an unlocked access to ps_ucred, but the result is benign */ 582 if (pr->ps_ucred != p->p_ucred) 583 dorefreshcreds(pr, p); 584} 585 586#define SINGLE_SUSPEND 0x01 /* other threads to stop wherever they are */ 587#define SINGLE_UNWIND 0x02 /* other threads to unwind and stop */ 588#define SINGLE_EXIT 0x03 /* other threads to unwind and then exit */ 589#define SINGLE_MASK 0x0f 590/* extra flags for single_thread_set */ 591#define SINGLE_DEEP 0x10 /* call is in deep */ 592#define SINGLE_NOWAIT 0x20 /* do not wait for other threads to stop */ 593 594int single_thread_set(struct proc *, int); 595int single_thread_wait(struct process *, int); 596void single_thread_clear(struct proc *, int); 597int single_thread_check(struct proc *, int); 598 599void child_return(void *); 600 601int proc_cansugid(struct proc *); 602 603struct cond { 604 unsigned int c_wait; /* [a] initialized and waiting */ 605}; 606 607#define COND_INITIALIZER() { .c_wait = 1 } 608 609void proc_trampoline_mi(void); 610 611/* 612 * functions to handle sets of cpus. 613 * 614 * For now we keep the cpus in ints so that we can use the generic 615 * atomic ops. 616 */ 617#define CPUSET_ASIZE(x) (((x) - 1)/32 + 1) 618#define CPUSET_SSIZE CPUSET_ASIZE(MAXCPUS) 619struct cpuset { 620 int cs_set[CPUSET_SSIZE]; 621}; 622 623void cpuset_init_cpu(struct cpu_info *); 624 625void cpuset_clear(struct cpuset *); 626void cpuset_add(struct cpuset *, struct cpu_info *); 627void cpuset_del(struct cpuset *, struct cpu_info *); 628int cpuset_isset(struct cpuset *, struct cpu_info *); 629void cpuset_add_all(struct cpuset *); 630void cpuset_copy(struct cpuset *, struct cpuset *); 631void cpuset_union(struct cpuset *, struct cpuset *, struct cpuset *); 632void cpuset_intersection(struct cpuset *t, struct cpuset *, struct cpuset *); 633void cpuset_complement(struct cpuset *, struct cpuset *, struct cpuset *); 634int cpuset_cardinality(struct cpuset *); 635struct cpu_info *cpuset_first(struct cpuset *); 636 637#endif /* _KERNEL */ 638#endif /* !_SYS_PROC_H_ */ 639 640