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. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)proc.h 8.15 (Berkeley) 5/19/95 39 * $FreeBSD: src/sys/sys/proc.h,v 1.99.2.9 2003/06/06 20:21:32 tegge Exp $ 40 */ 41 42 #ifndef _SYS_PROC_H_ 43 #define _SYS_PROC_H_ 44 45 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES) 46 47 #error "Userland must include sys/user.h instead of sys/proc.h" 48 49 #else 50 51 #include <sys/callout.h> /* For struct callout_handle. */ 52 #include <sys/filedesc.h> 53 #include <sys/queue.h> 54 #include <sys/tree.h> 55 #include <sys/rtprio.h> /* For struct rtprio. */ 56 #include <sys/signal.h> 57 #include <sys/lock.h> 58 #ifndef _KERNEL 59 #include <sys/time.h> /* For structs itimerval, timeval. */ 60 #endif 61 #include <sys/ucred.h> 62 #include <sys/event.h> /* For struct klist */ 63 #include <sys/eventvar.h> 64 #include <sys/sysent.h> /* For struct sysentvec */ 65 #include <sys/thread.h> 66 #include <sys/varsym.h> 67 #include <sys/upcall.h> 68 #include <sys/resourcevar.h> 69 #ifdef _KERNEL 70 #include <sys/globaldata.h> 71 #endif 72 #include <sys/systimer.h> 73 #include <sys/iosched.h> 74 #include <sys/usched.h> 75 #include <machine/proc.h> /* Machine-dependent proc substruct. */ 76 #include <machine/atomic.h> /* Machine-dependent proc substruct. */ 77 #include <sys/signalvar.h> 78 79 LIST_HEAD(proclist, proc); 80 LIST_HEAD(lwplist, lwp); 81 82 struct lwp_rb_tree; 83 RB_HEAD(lwp_rb_tree, lwp); 84 RB_PROTOTYPE2(lwp_rb_tree, lwp, u.lwp_rbnode, rb_lwp_compare, lwpid_t); 85 86 /* 87 * One structure allocated per session. 88 */ 89 struct session { 90 int s_count; /* Ref cnt; pgrps in session. */ 91 struct proc *s_leader; /* Session leader. */ 92 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */ 93 struct tty *s_ttyp; /* Controlling terminal. */ 94 pid_t s_sid; /* Session ID */ 95 char s_login[roundup(MAXLOGNAME, sizeof(long))]; /* Setlogin() name. */ 96 }; 97 98 /* 99 * One structure allocated per process group. 100 */ 101 struct pgrp { 102 LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */ 103 struct proclist pg_members; /* Pointer to pgrp members. */ 104 struct session *pg_session; /* Pointer to session. */ 105 struct sigiolst pg_sigiolst; /* List of sigio sources. */ 106 pid_t pg_id; /* Pgrp id. */ 107 int pg_jobc; /* # procs qualifying pgrp for job control */ 108 u_int pg_refs; 109 struct lwkt_token pg_token; 110 struct lock pg_lock; 111 }; 112 113 #define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */ 114 #define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */ 115 #define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */ 116 117 /* 118 * pargs, used to hold a copy of the command line, if it had a sane 119 * length 120 */ 121 struct pargs { 122 u_int ar_ref; /* Reference count */ 123 u_int ar_length; /* Length */ 124 u_char ar_args[0]; /* Arguments */ 125 }; 126 127 /* 128 * Description of a process. 129 * 130 * This structure contains the information needed to manage a thread of 131 * control, known in UN*X as a process; it has references to substructures 132 * containing descriptions of things that the process uses, but may share 133 * with related processes. The process structure and the substructures 134 * are always addressable except for those marked "(PROC ONLY)" below, 135 * which might be addressable only on a processor on which the process 136 * is running. 137 * 138 * NOTE! The process start time is stored in the thread structure associated 139 * with the process. If the process is a Zombie, then this field will be 140 * inaccessible due to the thread structure being free'd in kern_wait1(). 141 */ 142 143 struct jail; 144 struct vkernel_proc; 145 struct vkernel_lwp; 146 struct vmspace_entry; 147 struct ktrace_node; 148 struct sem_undo; 149 150 enum lwpstat { 151 LSRUN = 1, 152 LSSTOP = 2, 153 LSSLEEP = 3, 154 }; 155 156 enum procstat { 157 SIDL = 1, 158 SACTIVE = 2, 159 SSTOP = 3, 160 SZOMB = 4, 161 }; 162 163 struct lwp { 164 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */ 165 union { 166 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */ 167 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */ 168 } u; 169 170 struct proc *lwp_proc; /* Link to our proc. */ 171 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */ 172 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */ 173 174 lwpid_t lwp_tid; /* Our thread id */ 175 176 u_int lwp_flags; /* LWP_* flags */ 177 u_int lwp_mpflags; /* LWP_MP_* flags */ 178 enum lwpstat lwp_stat; /* LS* lwp status */ 179 int lwp_lock; /* lwp lock (prevent destruct) count */ 180 181 int lwp_dupfd; /* Sideways return value from fdopen */ 182 183 /* 184 * The following two fields are marked XXX since (at least) the 185 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly. 186 * These fields are used to pass the trap code from trapsignal() to 187 * postsig(), which gets called later from userret(). 188 * 189 * The correct "fix" for these XXX is to convert our signal system 190 * to use signal queues, where each signal can carry its own meta 191 * data. 192 */ 193 int lwp_sig; /* for core dump/debugger XXX */ 194 u_long lwp_code; /* for core dump/debugger XXX */ 195 196 /* 197 * Scheduling. 198 */ 199 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */ 200 sysclock_t lwp_cpbase; /* Measurement base */ 201 fixpt_t lwp_pctcpu; /* %cpu for this process */ 202 u_int lwp_slptime; /* Time since last blocked. */ 203 u_int lwp_rebal_ticks; /* Timestamp sched on current cpu */ 204 205 int lwp_traceflag; /* Kernel trace points. */ 206 207 struct rusage lwp_ru; /* stats for this lwp */ 208 209 union usched_data lwp_usdata; /* User scheduler specific */ 210 211 #define lwp_startcopy lwp_cpumask 212 cpumask_t lwp_cpumask; 213 sigset_t lwp_siglist; /* Signals arrived but not delivered. */ 214 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */ 215 sigset_t lwp_sigmask; /* Current signal mask. */ 216 stack_t lwp_sigstk; /* sp & on stack state variable */ 217 218 struct rtprio lwp_rtprio; /* Realtime priority. */ 219 #define lwp_endcopy lwp_md 220 221 struct mdproc lwp_md; /* Any machine-dependent fields. */ 222 223 struct thread *lwp_thread; /* backpointer to proc's thread */ 224 struct upcall *lwp_upcall; /* REGISTERED USERLAND POINTER! */ 225 struct kqueue lwp_kqueue; /* for select/poll */ 226 u_int lwp_kqueue_serial; 227 struct lwkt_token lwp_token; /* per-lwp token for signal/state */ 228 struct spinlock lwp_spin; /* spinlock for signal handling */ 229 void *lwp_reserveds1; /* reserved for lwp_saveusp */ 230 void *lwp_reserveds2; /* reserved for lwp_saveupc */ 231 }; 232 233 struct proc { 234 LIST_ENTRY(proc) p_list; /* List of all processes. */ 235 236 /* substructures: */ 237 struct ucred *p_ucred; /* Process owner's identity. */ 238 struct filedesc *p_fd; /* Ptr to open files structure. */ 239 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */ 240 struct plimit *p_limit; /* Process limits. */ 241 struct pstats *p_stats; 242 u_int p_mqueue_cnt; /* Count of open mqueues. */ 243 void *p_pad0; 244 struct sigacts *p_sigacts; 245 #define p_sigignore p_sigacts->ps_sigignore 246 #define p_sigcatch p_sigacts->ps_sigcatch 247 #define p_rlimit p_limit->pl_rlimit 248 249 int p_flags; /* P_* flags. */ 250 enum procstat p_stat; /* S* process status. */ 251 char p_pad1[3]; 252 253 pid_t p_pid; /* Process identifier. */ 254 LIST_ENTRY(proc) p_hash; /* Hash chain. */ 255 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ 256 struct proc *p_pptr; /* Pointer to parent process. */ 257 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ 258 struct proclist p_children; /* Pointer to list of children. */ 259 struct callout p_ithandle; /* for scheduling p_realtimer */ 260 struct varsymset p_varsymset; 261 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */ 262 263 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 264 265 struct vmspace *p_vmspace; /* Current address space. */ 266 267 unsigned int p_swtime; /* Time swapped in or out */ 268 269 struct itimerval p_realtimer; /* Alarm timer. */ 270 struct itimerval p_timer[3]; /* Virtual-time timers. */ 271 272 int p_traceflag; /* Kernel trace points. */ 273 struct ktrace_node *p_tracenode; /* Trace to vnode. */ 274 275 sigset_t p_siglist; /* Signals arrived but not delivered. */ 276 277 struct vnode *p_textvp; /* Vnode of executable. */ 278 struct nchandle p_textnch; /* namecache handle of executable. */ 279 280 unsigned int p_stops; /* procfs event bitmask */ 281 unsigned int p_stype; /* procfs stop event type */ 282 char p_step; /* procfs stop *once* flag */ 283 unsigned char p_pfsflags; /* procfs flags */ 284 char p_pad2[2]; /* padding for alignment */ 285 struct sigiolst p_sigiolst; /* list of sigio sources */ 286 int p_sigparent; /* signal to parent on exit */ 287 struct klist p_klist; /* knotes attached to this process */ 288 289 struct timeval p_start; /* start time for a process */ 290 291 struct rusage p_ru; /* stats for this proc */ 292 struct rusage p_cru; /* sum of stats for reaped children */ 293 void *p_dsched_priv1; 294 295 /* The following fields are all copied upon creation in fork. */ 296 #define p_startcopy p_comm 297 298 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */ 299 char p_pad3; /* Process lock (prevent destruct) count. */ 300 char p_nice; /* Process "nice" value. */ 301 char p_pad4; 302 int p_osrel; /* release date for binary ELF note */ 303 304 struct pgrp *p_pgrp; /* Pointer to process group. */ 305 306 struct sysentvec *p_sysent; /* System call dispatch information. */ 307 308 struct uprof p_prof; /* Profiling arguments. */ 309 struct rtprio p_rtprio; /* Realtime priority. */ 310 struct pargs *p_args; 311 u_short p_xstat; /* Exit status or last stop signal */ 312 313 int p_ionice; 314 void *p_dsched_priv2; 315 /* End area that is copied on creation. */ 316 #define p_endcopy p_dsched_priv2 317 u_short p_acflag; /* Accounting flags. */ 318 319 int p_lock; /* Prevent proc destruction */ 320 int p_nthreads; /* Number of threads in this process. */ 321 int p_nstopped; /* Number of stopped threads. */ 322 int p_lasttid; /* Last tid used. */ 323 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */ 324 void *p_aioinfo; /* ASYNC I/O info */ 325 int p_wakeup; /* thread id XXX lwp */ 326 struct proc *p_peers; /* XXX lwp */ 327 struct proc *p_leader; /* XXX lwp */ 328 void *p_emuldata; /* process-specific emulator state */ 329 struct usched *p_usched; /* Userland scheduling control */ 330 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */ 331 int p_numposixlocks; /* number of POSIX locks */ 332 void (*p_userret)(void);/* p: return-to-user hook */ 333 334 struct spinlock p_spin; /* Spinlock for LWP access to proc */ 335 struct lwkt_token p_token; /* Token for LWP access to proc */ 336 struct sem_undo *p_sem_undo; /* Fast semaphore tracking lookup */ 337 }; 338 339 #define lwp_wchan lwp_thread->td_wchan 340 #define lwp_wmesg lwp_thread->td_wmesg 341 #define p_session p_pgrp->pg_session 342 #define p_pgid p_pgrp->pg_id 343 344 /* These flags are kept in p_flags. */ 345 #define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */ 346 #define P_CONTROLT 0x00002 /* Has a controlling terminal */ 347 #define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */ 348 #define P_SYSVSEM 0x00008 /* Might have SysV semaphores */ 349 #define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */ 350 #define P_PROFIL 0x00020 /* Has started profiling */ 351 #define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */ 352 #define P_UNUSED4 0x00080 /* was: Sleep is interruptible */ 353 #define P_SUGID 0x00100 /* Had set id privileges since last exec */ 354 #define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */ 355 #define P_UNUSED2 0x00400 /* was: SIGSTOP status */ 356 #define P_TRACED 0x00800 /* Debugged process being traced */ 357 #define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */ 358 #define P_WEXIT 0x02000 /* Working on exiting (master exit) */ 359 #define P_EXEC 0x04000 /* Process called exec */ 360 #define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */ 361 362 #define P_UNUSED16 0x00010000 363 #define P_UPCALLPEND 0x00020000 /* an upcall is pending */ 364 365 #define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */ 366 #define P_UNUSED19 0x00080000 /* was: Now in a zombied state */ 367 368 /* Marked a kernel thread */ 369 #define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */ 370 #define P_KTHREADP 0x00200000 /* Process is really a kernel thread */ 371 #define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */ 372 373 #define P_JAILED 0x01000000 /* Process is in jail */ 374 #define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */ 375 #define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */ 376 #define P_INEXEC 0x08000000 /* Process is in execve(). */ 377 #define P_UNUSED28 0x10000000 378 #define P_UPCALLWAIT 0x20000000 /* Wait for upcall or signal */ 379 #define P_XCPU 0x40000000 /* SIGXCPU */ 380 381 #define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */ 382 #define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */ 383 #define LWP_SINTR 0x0000008 /* Sleep is interruptible. */ 384 #define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */ 385 #define LWP_UNUSED20 0x0000020 386 #define LWP_UNUSED40 0x0000040 387 #define LWP_UNUSED80 0x0000080 388 #define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */ 389 #define LWP_PAGING 0x0000200 /* Currently in vm_fault */ 390 391 /* 392 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland 393 * and has been counted in the process stop-threads-count, but 394 * may still be running in kernel-land. 395 * 396 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return 397 * to userland. p_nthreads will not be decremented until the 398 * thread has actually exited. 399 */ 400 #define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */ 401 #define LWP_MP_WEXIT 0x0000002 /* working on exiting */ 402 #define LWP_MP_WSTOP 0x0000004 /* working on stopping */ 403 #define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */ 404 #define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */ 405 406 #define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree) 407 #define FOREACH_LWP_IN_PROC(lp, p) \ 408 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree) 409 #define ONLY_LWP_IN_PROC(p) \ 410 (p->p_nthreads != 1 && \ 411 (panic("%s: proc %p (pid %d cmd %s) has more than one thread", \ 412 __func__, p, p->p_pid, p->p_comm), 1), \ 413 RB_ROOT(&p->p_lwp_tree)) 414 415 /* 416 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, 417 * as it is used to represent "no process group". 418 */ 419 #define PID_MAX 99999 420 #define NO_PID 100000 421 422 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 423 424 #ifdef _KERNEL 425 426 #ifdef MALLOC_DECLARE 427 MALLOC_DECLARE(M_SESSION); 428 MALLOC_DECLARE(M_PROC); 429 MALLOC_DECLARE(M_LWP); 430 MALLOC_DECLARE(M_SUBPROC); 431 MALLOC_DECLARE(M_PARGS); 432 #endif 433 434 /* for priv_check_cred() */ 435 #define NULL_CRED_OKAY 0x2 436 437 /* Handy macro to determine if p1 can mangle p2 */ 438 439 #define PRISON_CHECK(cr1, cr2) \ 440 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison) 441 442 /* 443 * STOPEVENT 444 */ 445 extern void stopevent(struct proc*, unsigned int, unsigned int); 446 #define STOPEVENT(p,e,v) \ 447 do { \ 448 if ((p)->p_stops & (e)) { \ 449 stopevent(p,e,v); \ 450 } \ 451 } while (0) 452 453 /* 454 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio, 455 * and signaling code (e.g. ksignal()). 456 * 457 * MPSAFE 458 */ 459 #define PHOLD(p) phold((p)) 460 #define PRELE(p) prele((p)) 461 #define PHOLDZOMB(p) pholdzomb((p)) 462 #define PRELEZOMB(p) prelezomb((p)) 463 #define PSTALL(p, msg, n) \ 464 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0) 465 466 /* 467 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work 468 * atomic ops because they can occur from an IPI. 469 * MPSAFE 470 */ 471 #define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1) 472 #define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1) 473 474 #define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) 475 extern LIST_HEAD(pidhashhead, proc) *pidhashtbl; 476 extern u_long pidhash; 477 478 #define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) 479 extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; 480 extern u_long pgrphash; 481 482 #if 0 483 #ifndef SET_CURPROC 484 #define SET_CURPROC(p) (curproc = (p)) 485 #endif 486 #endif 487 488 extern struct proc proc0; /* Process slot for swapper. */ 489 extern struct lwp lwp0; /* LWP slot for swapper. */ 490 extern struct thread thread0; /* Thread slot for swapper. */ 491 extern int hogticks; /* Limit on kernel cpu hogs. */ 492 extern int nprocs, maxproc; /* Current and max number of procs. */ 493 extern int maxprocperuid; /* Max procs per uid. */ 494 extern int sched_quantum; /* Scheduling quantum in ticks */ 495 496 extern struct proclist allproc; /* List of all processes. */ 497 extern struct proclist zombproc; /* List of zombie processes. */ 498 extern struct proc *initproc; /* Process slot for init */ 499 extern struct thread *pagethread, *updatethread; 500 501 /* 502 * Scheduler independant variables. The primary scheduler polling frequency, 503 * the maximum ESTCPU value, and the weighting factor for nice values. A 504 * cpu bound program's estcpu will increase to ESTCPUMAX - 1. 505 */ 506 #define ESTCPUFREQ 50 507 508 extern u_long ps_arg_cache_limit; 509 extern int ps_argsopen; 510 extern int ps_showallprocs; 511 512 struct proc *pfind (pid_t); /* Find process by id w/ref */ 513 struct proc *pfindn (pid_t); /* Find process by id wo/ref */ 514 struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */ 515 struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */ 516 void pgref (struct pgrp *); /* Ref pgrp preventing disposal */ 517 void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */ 518 519 struct globaldata; 520 struct lwp_params; 521 522 int enterpgrp (struct proc *p, pid_t pgid, int mksess); 523 void proc_add_allproc(struct proc *p); 524 void proc_move_allproc_zombie(struct proc *); 525 void proc_remove_zombie(struct proc *); 526 void allproc_scan(int (*callback)(struct proc *, void *), void *data); 527 void alllwp_scan(int (*callback)(struct lwp *, void *), void *data); 528 void zombproc_scan(int (*callback)(struct proc *, void *), void *data); 529 void fixjobc (struct proc *p, struct pgrp *pgrp, int entering); 530 void updatepcpu(struct lwp *, int, int); 531 int inferior (struct proc *p); 532 int leavepgrp (struct proc *p); 533 void sess_hold(struct session *sp); 534 void sess_rele(struct session *sp); 535 void procinit (void); 536 void relscurproc(struct proc *curp); 537 int p_trespass (struct ucred *cr1, struct ucred *cr2); 538 void setrunnable (struct lwp *); 539 void proc_stop (struct proc *); 540 void proc_unstop (struct proc *); 541 void sleep_gdinit (struct globaldata *); 542 int suser (struct thread *td); 543 int suser_cred (struct ucred *cred, int flag); 544 thread_t cpu_heavy_switch (struct thread *); 545 thread_t cpu_lwkt_switch (struct thread *); 546 547 void cpu_lwp_exit (void) __dead2; 548 void cpu_thread_exit (void) __dead2; 549 void lwp_exit (int masterexit) __dead2; 550 void lwp_dispose (struct lwp *); 551 int killalllwps (int); 552 void exit1 (int) __dead2; 553 void cpu_fork (struct lwp *, struct lwp *, int); 554 int cpu_prepare_lwp(struct lwp *, struct lwp_params *); 555 void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *); 556 void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg); 557 int fork1 (struct lwp *, int, struct proc **); 558 void start_forked_proc (struct lwp *, struct proc *); 559 int trace_req (struct proc *); 560 void cpu_thread_wait (struct thread *); 561 void setsugid (void); 562 void faultin (struct proc *p); 563 void swapin_request (void); 564 void phold (struct proc *); 565 void prele (struct proc *); 566 int pholdzomb (struct proc *); 567 void prelezomb (struct proc *); 568 void pstall (struct proc *, const char *, int); 569 570 u_int32_t procrunnable (void); 571 572 #endif /* _KERNEL */ 573 574 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 575 #endif /* !_SYS_PROC_H_ */ 576