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. */ 115 116 /* 117 * pargs, used to hold a copy of the command line, if it had a sane 118 * length 119 */ 120 struct pargs { 121 u_int ar_ref; /* Reference count */ 122 u_int ar_length; /* Length */ 123 u_char ar_args[0]; /* Arguments */ 124 }; 125 126 /* 127 * Description of a process. 128 * 129 * This structure contains the information needed to manage a thread of 130 * control, known in UN*X as a process; it has references to substructures 131 * containing descriptions of things that the process uses, but may share 132 * with related processes. The process structure and the substructures 133 * are always addressable except for those marked "(PROC ONLY)" below, 134 * which might be addressable only on a processor on which the process 135 * is running. 136 * 137 * NOTE! The process start time is stored in the thread structure associated 138 * with the process. If the process is a Zombie, then this field will be 139 * inaccessible due to the thread structure being free'd in kern_wait1(). 140 */ 141 142 struct jail; 143 struct vkernel_proc; 144 struct vkernel_lwp; 145 struct vmspace_entry; 146 struct ktrace_node; 147 148 enum lwpstat { 149 LSRUN = 1, 150 LSSTOP = 2, 151 LSSLEEP = 3, 152 }; 153 154 enum procstat { 155 SIDL = 1, 156 SACTIVE = 2, 157 SSTOP = 3, 158 SZOMB = 4, 159 }; 160 161 struct lwp { 162 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */ 163 union { 164 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */ 165 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */ 166 } u; 167 168 struct proc *lwp_proc; /* Link to our proc. */ 169 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */ 170 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */ 171 172 lwpid_t lwp_tid; /* Our thread id */ 173 174 u_int lwp_flags; /* LWP_* flags */ 175 u_int lwp_mpflags; /* LWP_MP_* flags */ 176 enum lwpstat lwp_stat; /* LS* lwp status */ 177 int lwp_lock; /* lwp lock (prevent destruct) count */ 178 179 int lwp_dupfd; /* Sideways return value from fdopen */ 180 181 /* 182 * The following two fields are marked XXX since (at least) the 183 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly. 184 * These fields are used to pass the trap code from trapsignal() to 185 * postsig(), which gets called later from userret(). 186 * 187 * The correct "fix" for these XXX is to convert our signal system 188 * to use signal queues, where each signal can carry its own meta 189 * data. 190 */ 191 int lwp_sig; /* for core dump/debugger XXX */ 192 u_long lwp_code; /* for core dump/debugger XXX */ 193 194 /* 195 * Scheduling. 196 */ 197 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */ 198 sysclock_t lwp_cpbase; /* Measurement base */ 199 fixpt_t lwp_pctcpu; /* %cpu for this process */ 200 u_int lwp_slptime; /* Time since last blocked. */ 201 202 int lwp_traceflag; /* Kernel trace points. */ 203 204 struct rusage lwp_ru; /* stats for this lwp */ 205 206 union usched_data lwp_usdata; /* User scheduler specific */ 207 208 #define lwp_startcopy lwp_cpumask 209 cpumask_t lwp_cpumask; 210 sigset_t lwp_siglist; /* Signals arrived but not delivered. */ 211 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */ 212 sigset_t lwp_sigmask; /* Current signal mask. */ 213 stack_t lwp_sigstk; /* sp & on stack state variable */ 214 215 struct rtprio lwp_rtprio; /* Realtime priority. */ 216 #define lwp_endcopy lwp_md 217 218 struct mdproc lwp_md; /* Any machine-dependent fields. */ 219 220 struct thread *lwp_thread; /* backpointer to proc's thread */ 221 struct upcall *lwp_upcall; /* REGISTERED USERLAND POINTER! */ 222 struct kqueue lwp_kqueue; /* for select/poll */ 223 u_int lwp_kqueue_serial; 224 struct lwkt_token lwp_token; /* per-lwp token for signal/state */ 225 struct spinlock lwp_spin; /* spinlock for signal handling */ 226 void *lwp_reserveds1; /* reserved for lwp_saveusp */ 227 void *lwp_reserveds2; /* reserved for lwp_saveupc */ 228 }; 229 230 struct proc { 231 LIST_ENTRY(proc) p_list; /* List of all processes. */ 232 233 /* substructures: */ 234 struct ucred *p_ucred; /* Process owner's identity. */ 235 struct filedesc *p_fd; /* Ptr to open files structure. */ 236 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */ 237 struct plimit *p_limit; /* Process limits. */ 238 struct pstats *p_stats; 239 u_int p_mqueue_cnt; /* Count of open mqueues. */ 240 void *p_pad0; 241 struct sigacts *p_sigacts; 242 #define p_sigignore p_sigacts->ps_sigignore 243 #define p_sigcatch p_sigacts->ps_sigcatch 244 #define p_rlimit p_limit->pl_rlimit 245 246 int p_flags; /* P_* flags. */ 247 enum procstat p_stat; /* S* process status. */ 248 char p_pad1[3]; 249 250 pid_t p_pid; /* Process identifier. */ 251 LIST_ENTRY(proc) p_hash; /* Hash chain. */ 252 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ 253 struct proc *p_pptr; /* Pointer to parent process. */ 254 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ 255 struct proclist p_children; /* Pointer to list of children. */ 256 struct callout p_ithandle; /* for scheduling p_realtimer */ 257 struct varsymset p_varsymset; 258 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */ 259 260 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 261 262 struct vmspace *p_vmspace; /* Current address space. */ 263 264 unsigned int p_swtime; /* Time swapped in or out */ 265 266 struct itimerval p_realtimer; /* Alarm timer. */ 267 struct itimerval p_timer[3]; /* Virtual-time timers. */ 268 269 int p_traceflag; /* Kernel trace points. */ 270 struct ktrace_node *p_tracenode; /* Trace to vnode. */ 271 272 sigset_t p_siglist; /* Signals arrived but not delivered. */ 273 274 struct vnode *p_textvp; /* Vnode of executable. */ 275 struct nchandle p_textnch; /* namecache handle of executable. */ 276 277 unsigned int p_stops; /* procfs event bitmask */ 278 unsigned int p_stype; /* procfs stop event type */ 279 char p_step; /* procfs stop *once* flag */ 280 unsigned char p_pfsflags; /* procfs flags */ 281 char p_pad2[2]; /* padding for alignment */ 282 struct sigiolst p_sigiolst; /* list of sigio sources */ 283 int p_sigparent; /* signal to parent on exit */ 284 struct klist p_klist; /* knotes attached to this process */ 285 286 struct timeval p_start; /* start time for a process */ 287 288 struct rusage p_ru; /* stats for this proc */ 289 struct rusage p_cru; /* sum of stats for reaped children */ 290 void *p_dsched_priv1; 291 292 /* The following fields are all copied upon creation in fork. */ 293 #define p_startcopy p_comm 294 295 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */ 296 char p_pad3; /* Process lock (prevent destruct) count. */ 297 char p_nice; /* Process "nice" value. */ 298 char p_pad4; 299 int p_osrel; /* release date for binary ELF note */ 300 301 struct pgrp *p_pgrp; /* Pointer to process group. */ 302 303 struct sysentvec *p_sysent; /* System call dispatch information. */ 304 305 struct uprof p_prof; /* Profiling arguments. */ 306 struct rtprio p_rtprio; /* Realtime priority. */ 307 struct pargs *p_args; 308 u_short p_xstat; /* Exit status or last stop signal */ 309 310 int p_ionice; 311 void *p_dsched_priv2; 312 /* End area that is copied on creation. */ 313 #define p_endcopy p_dsched_priv2 314 u_short p_acflag; /* Accounting flags. */ 315 316 int p_lock; /* Prevent proc destruction */ 317 int p_nthreads; /* Number of threads in this process. */ 318 int p_nstopped; /* Number of stopped threads. */ 319 int p_lasttid; /* Last tid used. */ 320 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */ 321 void *p_aioinfo; /* ASYNC I/O info */ 322 int p_wakeup; /* thread id XXX lwp */ 323 struct proc *p_peers; /* XXX lwp */ 324 struct proc *p_leader; /* XXX lwp */ 325 void *p_emuldata; /* process-specific emulator state */ 326 struct usched *p_usched; /* Userland scheduling control */ 327 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */ 328 int p_numposixlocks; /* number of POSIX locks */ 329 void (*p_userret)(void);/* p: return-to-user hook */ 330 331 struct spinlock p_spin; /* Spinlock for LWP access to proc */ 332 struct lwkt_token p_token; /* Token for LWP access to proc */ 333 }; 334 335 #define lwp_wchan lwp_thread->td_wchan 336 #define lwp_wmesg lwp_thread->td_wmesg 337 #define p_session p_pgrp->pg_session 338 #define p_pgid p_pgrp->pg_id 339 340 /* These flags are kept in p_flags. */ 341 #define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */ 342 #define P_CONTROLT 0x00002 /* Has a controlling terminal */ 343 #define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */ 344 #define P_UNUSED3 0x00008 345 #define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */ 346 #define P_PROFIL 0x00020 /* Has started profiling */ 347 #define P_UNUSED5 0x00040 /* was: Selecting; wakeup/waiting danger */ 348 #define P_UNUSED4 0x00080 /* was: Sleep is interruptible */ 349 #define P_SUGID 0x00100 /* Had set id privileges since last exec */ 350 #define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */ 351 #define P_UNUSED2 0x00400 /* was: SIGSTOP status */ 352 #define P_TRACED 0x00800 /* Debugged process being traced */ 353 #define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */ 354 #define P_WEXIT 0x02000 /* Working on exiting (master exit) */ 355 #define P_EXEC 0x04000 /* Process called exec */ 356 #define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */ 357 358 #define P_UNUSED16 0x00010000 359 #define P_UPCALLPEND 0x00020000 /* an upcall is pending */ 360 361 #define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */ 362 #define P_UNUSED19 0x00080000 /* was: Now in a zombied state */ 363 364 /* Marked a kernel thread */ 365 #define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */ 366 #define P_KTHREADP 0x00200000 /* Process is really a kernel thread */ 367 #define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */ 368 369 #define P_JAILED 0x01000000 /* Process is in jail */ 370 #define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */ 371 #define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */ 372 #define P_INEXEC 0x08000000 /* Process is in execve(). */ 373 #define P_UNUSED28 0x10000000 374 #define P_UPCALLWAIT 0x20000000 /* Wait for upcall or signal */ 375 #define P_XCPU 0x40000000 /* SIGXCPU */ 376 377 #define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */ 378 #define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */ 379 #define LWP_SINTR 0x0000008 /* Sleep is interruptible. */ 380 #define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */ 381 #define LWP_UNUSED20 0x0000020 382 #define LWP_UNUSED40 0x0000040 383 #define LWP_UNUSED80 0x0000080 384 #define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */ 385 #define LWP_PAGING 0x0000200 /* Currently in vm_fault */ 386 387 /* 388 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland 389 * and has been counted in the process stop-threads-count, but 390 * may still be running in kernel-land. 391 * 392 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return 393 * to userland. p_nthreads will not be decremented until the 394 * thread has actually exited. 395 */ 396 #define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */ 397 #define LWP_MP_WEXIT 0x0000002 /* working on exiting */ 398 #define LWP_MP_WSTOP 0x0000004 /* working on stopping */ 399 400 #define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree) 401 #define FOREACH_LWP_IN_PROC(lp, p) \ 402 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree) 403 #define ONLY_LWP_IN_PROC(p) \ 404 (p->p_nthreads != 1 && \ 405 (panic("%s: proc %p (pid %d cmd %s) has more than one thread", \ 406 __func__, p, p->p_pid, p->p_comm), 1), \ 407 RB_ROOT(&p->p_lwp_tree)) 408 409 /* 410 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, 411 * as it is used to represent "no process group". 412 */ 413 #define PID_MAX 99999 414 #define NO_PID 100000 415 416 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 417 418 #ifdef _KERNEL 419 420 #ifdef MALLOC_DECLARE 421 MALLOC_DECLARE(M_SESSION); 422 MALLOC_DECLARE(M_PROC); 423 MALLOC_DECLARE(M_LWP); 424 MALLOC_DECLARE(M_SUBPROC); 425 MALLOC_DECLARE(M_PARGS); 426 #endif 427 428 /* for priv_check_cred() */ 429 #define NULL_CRED_OKAY 0x2 430 431 /* Handy macro to determine if p1 can mangle p2 */ 432 433 #define PRISON_CHECK(cr1, cr2) \ 434 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison) 435 436 /* 437 * STOPEVENT 438 */ 439 extern void stopevent(struct proc*, unsigned int, unsigned int); 440 #define STOPEVENT(p,e,v) \ 441 do { \ 442 if ((p)->p_stops & (e)) { \ 443 stopevent(p,e,v); \ 444 } \ 445 } while (0) 446 447 /* 448 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio, 449 * and signaling code (e.g. ksignal()). 450 * 451 * MPSAFE 452 */ 453 #define PHOLD(p) phold((p)) 454 #define PRELE(p) prele((p)) 455 #define PSTALL(p, msg, n) \ 456 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0) 457 458 /* 459 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work 460 * atomic ops because they can occur from an IPI. 461 * MPSAFE 462 */ 463 #define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1) 464 #define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1) 465 466 #define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) 467 extern LIST_HEAD(pidhashhead, proc) *pidhashtbl; 468 extern u_long pidhash; 469 470 #define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) 471 extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; 472 extern u_long pgrphash; 473 474 #if 0 475 #ifndef SET_CURPROC 476 #define SET_CURPROC(p) (curproc = (p)) 477 #endif 478 #endif 479 480 extern struct proc proc0; /* Process slot for swapper. */ 481 extern struct lwp lwp0; /* LWP slot for swapper. */ 482 extern struct thread thread0; /* Thread slot for swapper. */ 483 extern int hogticks; /* Limit on kernel cpu hogs. */ 484 extern int nprocs, maxproc; /* Current and max number of procs. */ 485 extern int maxprocperuid; /* Max procs per uid. */ 486 extern int sched_quantum; /* Scheduling quantum in ticks */ 487 488 extern struct proclist allproc; /* List of all processes. */ 489 extern struct proclist zombproc; /* List of zombie processes. */ 490 extern struct proc *initproc; /* Process slot for init */ 491 extern struct thread *pagethread, *updatethread; 492 493 /* 494 * Scheduler independant variables. The primary scheduler polling frequency, 495 * the maximum ESTCPU value, and the weighting factor for nice values. A 496 * cpu bound program's estcpu will increase to ESTCPUMAX - 1. 497 */ 498 #define ESTCPUFREQ 50 499 500 extern u_long ps_arg_cache_limit; 501 extern int ps_argsopen; 502 extern int ps_showallprocs; 503 504 struct proc *pfind (pid_t); /* Find process by id w/ref */ 505 struct proc *pfindn (pid_t); /* Find process by id wo/ref */ 506 struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */ 507 struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */ 508 void pgref (struct pgrp *); /* Ref pgrp preventing disposal */ 509 void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */ 510 511 struct globaldata; 512 struct lwp_params; 513 514 int enterpgrp (struct proc *p, pid_t pgid, int mksess); 515 void proc_add_allproc(struct proc *p); 516 void proc_move_allproc_zombie(struct proc *); 517 void proc_remove_zombie(struct proc *); 518 void allproc_scan(int (*callback)(struct proc *, void *), void *data); 519 void alllwp_scan(int (*callback)(struct lwp *, void *), void *data); 520 void zombproc_scan(int (*callback)(struct proc *, void *), void *data); 521 void fixjobc (struct proc *p, struct pgrp *pgrp, int entering); 522 void updatepcpu(struct lwp *, int, int); 523 int inferior (struct proc *p); 524 int leavepgrp (struct proc *p); 525 void sess_hold(struct session *sp); 526 void sess_rele(struct session *sp); 527 void procinit (void); 528 void relscurproc(struct proc *curp); 529 int p_trespass (struct ucred *cr1, struct ucred *cr2); 530 void setrunnable (struct lwp *); 531 void proc_stop (struct proc *); 532 void proc_unstop (struct proc *); 533 void sleep_gdinit (struct globaldata *); 534 int suser (struct thread *td); 535 int suser_cred (struct ucred *cred, int flag); 536 thread_t cpu_heavy_switch (struct thread *); 537 thread_t cpu_lwkt_switch (struct thread *); 538 539 void cpu_lwp_exit (void) __dead2; 540 void cpu_thread_exit (void) __dead2; 541 void lwp_exit (int masterexit) __dead2; 542 void lwp_dispose (struct lwp *); 543 int killalllwps (int); 544 void exit1 (int) __dead2; 545 void cpu_fork (struct lwp *, struct lwp *, int); 546 int cpu_prepare_lwp(struct lwp *, struct lwp_params *); 547 void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *); 548 void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg); 549 int fork1 (struct lwp *, int, struct proc **); 550 void start_forked_proc (struct lwp *, struct proc *); 551 int trace_req (struct proc *); 552 void cpu_thread_wait (struct thread *); 553 void setsugid (void); 554 void faultin (struct proc *p); 555 void swapin_request (void); 556 void phold (struct proc *); 557 void prele (struct proc *); 558 void pstall (struct proc *, const char *, int); 559 560 u_int32_t procrunnable (void); 561 562 #endif /* _KERNEL */ 563 564 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 565 #endif /* !_SYS_PROC_H_ */ 566