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/resourcevar.h> 68 #ifdef _KERNEL 69 #include <sys/globaldata.h> 70 #endif 71 #include <sys/systimer.h> 72 #include <sys/iosched.h> 73 #include <sys/usched.h> 74 #include <machine/proc.h> /* Machine-dependent proc substruct. */ 75 #include <machine/atomic.h> /* Machine-dependent proc substruct. */ 76 #include <sys/signalvar.h> 77 78 struct proc; 79 struct pgrp; 80 struct session; 81 struct lwp; 82 83 LIST_HEAD(proclist, proc); 84 LIST_HEAD(pgrplist, pgrp); 85 LIST_HEAD(sesslist, session); 86 LIST_HEAD(lwplist, lwp); 87 88 struct lwp_rb_tree; 89 RB_HEAD(lwp_rb_tree, lwp); 90 RB_PROTOTYPE2(lwp_rb_tree, lwp, u.lwp_rbnode, rb_lwp_compare, lwpid_t); 91 92 /* 93 * One structure allocated per session. 94 */ 95 struct session { 96 LIST_ENTRY(session) s_list; /* Hash chain. */ 97 int s_count; /* Ref cnt; pgrps in session. */ 98 struct proc *s_leader; /* Session leader. */ 99 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */ 100 struct tty *s_ttyp; /* Controlling terminal. */ 101 pid_t s_sid; /* Session ID */ 102 char s_login[roundup(MAXLOGNAME, sizeof(long))]; /* Setlogin() name. */ 103 }; 104 105 /* 106 * One structure allocated per process group. 107 */ 108 struct pgrp { 109 LIST_ENTRY(pgrp) pg_list; /* Hash chain. */ 110 struct proclist pg_members; /* Pointer to pgrp members. */ 111 struct session *pg_session; /* Pointer to session. */ 112 struct sigiolst pg_sigiolst; /* List of sigio sources. */ 113 pid_t pg_id; /* Pgrp id. */ 114 int pg_jobc; /* # procs qualifying pgrp for job control */ 115 u_int pg_refs; 116 struct lwkt_token pg_token; 117 struct lock pg_lock; 118 }; 119 120 #define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */ 121 #define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */ 122 #define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */ 123 124 /* 125 * pargs, used to hold a copy of the command line, if it had a sane 126 * length 127 */ 128 struct pargs { 129 u_int ar_ref; /* Reference count */ 130 u_int ar_length; /* Length */ 131 u_char ar_args[0]; /* Arguments */ 132 }; 133 134 /* 135 * Description of a process. 136 * 137 * This structure contains the information needed to manage a thread of 138 * control, known in UN*X as a process; it has references to substructures 139 * containing descriptions of things that the process uses, but may share 140 * with related processes. The process structure and the substructures 141 * are always addressable except for those marked "(PROC ONLY)" below, 142 * which might be addressable only on a processor on which the process 143 * is running. 144 * 145 * NOTE! The process start time is stored in the thread structure associated 146 * with the process. If the process is a Zombie, then this field will be 147 * inaccessible due to the thread structure being free'd in kern_wait1(). 148 */ 149 150 struct jail; 151 struct vkernel_proc; 152 struct vkernel_lwp; 153 struct vmspace_entry; 154 struct ktrace_node; 155 struct sem_undo; 156 157 enum lwpstat { 158 LSRUN = 1, 159 LSSTOP = 2, 160 LSSLEEP = 3, 161 }; 162 163 enum procstat { 164 SIDL = 1, 165 SACTIVE = 2, 166 SSTOP = 3, 167 SZOMB = 4, 168 }; 169 170 struct lwp { 171 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */ 172 union { 173 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */ 174 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */ 175 } u; 176 177 struct proc *lwp_proc; /* Link to our proc. */ 178 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */ 179 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */ 180 181 lwpid_t lwp_tid; /* Our thread id */ 182 183 u_int lwp_flags; /* LWP_* flags */ 184 u_int lwp_mpflags; /* LWP_MP_* flags */ 185 enum lwpstat lwp_stat; /* LS* lwp status */ 186 int lwp_lock; /* lwp lock (prevent destruct) count */ 187 188 int lwp_dupfd; /* Sideways return value from fdopen */ 189 190 /* 191 * The following two fields are marked XXX since (at least) the 192 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly. 193 * These fields are used to pass the trap code from trapsignal() to 194 * postsig(), which gets called later from userret(). 195 * 196 * The correct "fix" for these XXX is to convert our signal system 197 * to use signal queues, where each signal can carry its own meta 198 * data. 199 */ 200 int lwp_sig; /* for core dump/debugger XXX */ 201 u_long lwp_code; /* for core dump/debugger XXX */ 202 203 /* 204 * Scheduling. 205 */ 206 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */ 207 sysclock_t lwp_cpbase; /* Measurement base */ 208 fixpt_t lwp_pctcpu; /* %cpu for this process */ 209 u_int lwp_slptime; /* Time since last blocked. */ 210 u_int lwp_rebal_ticks; /* Timestamp sched on current cpu */ 211 212 int lwp_traceflag; /* Kernel trace points. */ 213 214 struct rusage lwp_ru; /* stats for this lwp */ 215 216 union usched_data lwp_usdata; /* User scheduler specific */ 217 218 #define lwp_startcopy lwp_cpumask 219 cpumask_t lwp_cpumask; 220 sigset_t lwp_siglist; /* Signals arrived but not delivered. */ 221 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */ 222 sigset_t lwp_sigmask; /* Current signal mask. */ 223 stack_t lwp_sigstk; /* sp & on stack state variable */ 224 225 struct rtprio lwp_rtprio; /* Realtime priority. */ 226 #define lwp_endcopy lwp_md 227 228 struct mdproc lwp_md; /* Any machine-dependent fields. */ 229 230 struct thread *lwp_thread; /* backpointer to proc's thread */ 231 void *lwp_unused01; /* for future fields */ 232 struct kqueue lwp_kqueue; /* for select/poll */ 233 u_int lwp_kqueue_serial; 234 struct lwkt_token lwp_token; /* per-lwp token for signal/state */ 235 struct spinlock lwp_spin; /* spinlock for signal handling */ 236 void *lwp_reserveds1; /* reserved for lwp_saveusp */ 237 void *lwp_reserveds2; /* reserved for lwp_saveupc */ 238 }; 239 240 struct proc { 241 LIST_ENTRY(proc) p_list; /* List of all processes. */ 242 243 /* substructures: */ 244 struct ucred *p_ucred; /* Process owner's identity. */ 245 struct filedesc *p_fd; /* Ptr to open files structure. */ 246 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */ 247 struct plimit *p_limit; /* Process limits. */ 248 struct pstats *p_stats; 249 u_int p_mqueue_cnt; /* Count of open mqueues. */ 250 long p_waitgen; /* wait interlock allows late signal */ 251 struct sigacts *p_sigacts; 252 #define p_sigignore p_sigacts->ps_sigignore 253 #define p_sigcatch p_sigacts->ps_sigcatch 254 #define p_rlimit p_limit->pl_rlimit 255 256 int p_flags; /* P_* flags. */ 257 enum procstat p_stat; /* S* process status. */ 258 char p_pad1[3]; 259 260 pid_t p_pid; /* Process identifier. */ 261 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ 262 struct proc *p_pptr; /* Pointer to parent process. */ 263 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ 264 struct proclist p_children; /* Pointer to list of children. */ 265 struct callout p_ithandle; /* for scheduling p_realtimer */ 266 struct varsymset p_varsymset; 267 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */ 268 269 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 270 271 struct vmspace *p_vmspace; /* Current address space. */ 272 273 unsigned int p_swtime; /* Time swapped in or out */ 274 275 struct itimerval p_realtimer; /* Alarm timer. */ 276 struct itimerval p_timer[3]; /* Virtual-time timers. */ 277 278 int p_traceflag; /* Kernel trace points. */ 279 struct ktrace_node *p_tracenode; /* Trace to vnode. */ 280 281 sigset_t p_siglist; /* Signals arrived but not delivered. */ 282 283 struct vnode *p_textvp; /* Vnode of executable. */ 284 struct nchandle p_textnch; /* namecache handle of executable. */ 285 286 unsigned int p_stops; /* procfs event bitmask */ 287 unsigned int p_stype; /* procfs stop event type */ 288 char p_step; /* procfs stop *once* flag */ 289 unsigned char p_pfsflags; /* procfs flags */ 290 char p_pad2[2]; 291 struct sigiolst p_sigiolst; /* list of sigio sources */ 292 int p_sigparent; /* signal to parent on exit */ 293 struct klist p_klist; /* knotes attached to this process */ 294 295 struct timeval p_start; /* start time for a process */ 296 297 struct rusage p_ru; /* stats for this proc */ 298 struct rusage p_cru; /* sum of stats for reaped children */ 299 void *p_dsched_priv1; 300 301 /* The following fields are all copied upon creation in fork. */ 302 #define p_startcopy p_comm 303 304 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */ 305 char p_pad3; 306 char p_nice; /* Process "nice" value. */ 307 char p_pad4; 308 int p_osrel; /* release date for binary ELF note */ 309 310 struct pgrp *p_pgrp; /* Pointer to process group. */ 311 312 struct sysentvec *p_sysent; /* System call dispatch information. */ 313 314 struct uprof p_prof; /* Profiling arguments. */ 315 struct rtprio p_rtprio; /* Realtime priority. */ 316 struct pargs *p_args; 317 u_short p_xstat; /* Exit status or last stop signal */ 318 319 int p_ionice; 320 void *p_dsched_priv2; 321 /* End area that is copied on creation. */ 322 #define p_endcopy p_dsched_priv2 323 u_short p_acflag; /* Accounting flags. */ 324 325 int p_lock; /* Prevent proc destruction */ 326 int p_nthreads; /* Number of threads in this process. */ 327 int p_nstopped; /* Number of stopped threads. */ 328 int p_lasttid; /* Last tid used. */ 329 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */ 330 void *p_aioinfo; /* ASYNC I/O info */ 331 int p_wakeup; /* thread id XXX lwp */ 332 struct proc *p_peers; /* XXX lwp */ 333 struct proc *p_leader; /* XXX lwp */ 334 void *p_emuldata; /* process-specific emulator state */ 335 struct usched *p_usched; /* Userland scheduling control */ 336 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */ 337 int p_numposixlocks; /* number of POSIX locks */ 338 void (*p_userret)(void);/* p: return-to-user hook */ 339 340 struct spinlock p_spin; /* Spinlock for LWP access to proc */ 341 struct lwkt_token p_token; /* Token for LWP access to proc */ 342 struct sem_undo *p_sem_undo; /* Fast semaphore tracking lookup */ 343 void *p_drv_priv; /* scp linkage (for syscons) */ 344 void *p_vmm; 345 cpumask_t p_vmm_cpumask; 346 }; 347 348 #define lwp_wchan lwp_thread->td_wchan 349 #define lwp_wmesg lwp_thread->td_wmesg 350 #define p_session p_pgrp->pg_session 351 #define p_pgid p_pgrp->pg_id 352 353 /* These flags are kept in p_flags. */ 354 #define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */ 355 #define P_CONTROLT 0x00002 /* Has a controlling terminal */ 356 #define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */ 357 #define P_SYSVSEM 0x00008 /* Might have SysV semaphores */ 358 #define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */ 359 #define P_PROFIL 0x00020 /* Has started profiling */ 360 #define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */ 361 #define P_SCMOUSE 0x00080 /* Process is held by syscons ioctl */ 362 /* was: Sleep is interruptible */ 363 #define P_SUGID 0x00100 /* Had set id privileges since last exec */ 364 #define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */ 365 #define P_MAYBETHREADED 0x00400 /* might be threaded optimization */ 366 #define P_TRACED 0x00800 /* Debugged process being traced */ 367 #define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */ 368 #define P_WEXIT 0x02000 /* Working on exiting (master exit) */ 369 #define P_EXEC 0x04000 /* Process called exec */ 370 #define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */ 371 372 #define P_UNUSED16 0x00010000 373 #define P_UNUSED17 0x00020000 374 375 #define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */ 376 #define P_UNUSED19 0x00080000 /* was: Now in a zombied state */ 377 378 /* Marked a kernel thread */ 379 #define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */ 380 #define P_KTHREADP 0x00200000 /* Process is really a kernel thread */ 381 #define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */ 382 383 #define P_JAILED 0x01000000 /* Process is in jail */ 384 #define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */ 385 #define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */ 386 #define P_INEXEC 0x08000000 /* Process is in execve(). */ 387 #define P_UNUSED28 0x10000000 388 #define P_UNUSED29 0x20000000 389 #define P_XCPU 0x40000000 /* SIGXCPU */ 390 391 #define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */ 392 #define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */ 393 #define LWP_SINTR 0x0000008 /* Sleep is interruptible. */ 394 #define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */ 395 #define LWP_UNUSED20 0x0000020 396 #define LWP_UNUSED40 0x0000040 397 #define LWP_UNUSED80 0x0000080 398 #define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */ 399 #define LWP_PAGING 0x0000200 /* Currently in vm_fault */ 400 401 /* 402 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland 403 * and has been counted in the process stop-threads-count, but 404 * may still be running in kernel-land. 405 * 406 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return 407 * to userland. p_nthreads will not be decremented until the 408 * thread has actually exited. 409 */ 410 #define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */ 411 #define LWP_MP_WEXIT 0x0000002 /* working on exiting (lwpuserret()) */ 412 #define LWP_MP_WSTOP 0x0000004 /* working on stopping */ 413 #define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */ 414 #define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */ 415 #define LWP_MP_VNLRU 0x0000020 /* check excessive vnode allocations (lwpuserret()) */ 416 417 #define LWP_MP_URETMASK (LWP_MP_WEXIT | LWP_MP_VNLRU) 418 419 #define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree) 420 #define FOREACH_LWP_IN_PROC(lp, p) \ 421 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree) 422 #define ONLY_LWP_IN_PROC(p) _only_lwp_in_proc(p, __func__) 423 424 #ifdef _KERNEL 425 static inline struct lwp * 426 _only_lwp_in_proc(struct proc *p, const char *caller) 427 { 428 if (p->p_nthreads != 1) { 429 panic("%s: proc %p (pid %d cmd %s) has more than one thread", 430 caller, p, p->p_pid, p->p_comm); 431 } 432 return RB_ROOT(&p->p_lwp_tree); 433 } 434 #endif 435 436 /* 437 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, 438 * as it is used to represent "no process group". 439 */ 440 #define PID_MAX 99999 441 #define NO_PID 100000 442 443 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 444 445 #ifdef _KERNEL 446 447 #ifdef MALLOC_DECLARE 448 MALLOC_DECLARE(M_SESSION); 449 MALLOC_DECLARE(M_PROC); 450 MALLOC_DECLARE(M_LWP); 451 MALLOC_DECLARE(M_SUBPROC); 452 MALLOC_DECLARE(M_PARGS); 453 #endif 454 455 /* for priv_check_cred() */ 456 #define NULL_CRED_OKAY 0x2 457 458 /* Handy macro to determine if p1 can mangle p2 */ 459 460 #define PRISON_CHECK(cr1, cr2) \ 461 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison) 462 463 /* 464 * STOPEVENT 465 */ 466 extern void stopevent(struct proc*, unsigned int, unsigned int); 467 #define STOPEVENT(p,e,v) \ 468 do { \ 469 if ((p)->p_stops & (e)) { \ 470 stopevent(p,e,v); \ 471 } \ 472 } while (0) 473 474 /* 475 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio, 476 * and signaling code (e.g. ksignal()). 477 * 478 * MPSAFE 479 */ 480 #define PHOLD(p) phold((p)) 481 #define PRELE(p) prele((p)) 482 #define PHOLDZOMB(p) pholdzomb((p)) 483 #define PRELEZOMB(p) prelezomb((p)) 484 #define PSTALL(p, msg, n) \ 485 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0) 486 487 /* 488 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work 489 * atomic ops because they can occur from an IPI. 490 * MPSAFE 491 */ 492 #define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1) 493 #define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1) 494 495 extern struct proc proc0; /* Process slot for swapper. */ 496 extern struct lwp lwp0; /* LWP slot for swapper. */ 497 extern struct thread thread0; /* Thread slot for swapper. */ 498 extern int hogticks; /* Limit on kernel cpu hogs. */ 499 extern int nprocs, maxproc; /* Current and max number of procs. */ 500 extern int maxprocperuid; /* Max procs per uid. */ 501 extern int sched_quantum; /* Scheduling quantum in ticks */ 502 503 extern struct proc *initproc; /* Process slot for init */ 504 extern struct thread *pagethread, *updatethread; 505 506 /* 507 * Scheduler independant variables. The primary scheduler polling frequency, 508 * the maximum ESTCPU value, and the weighting factor for nice values. A 509 * cpu bound program's estcpu will increase to ESTCPUMAX - 1. 510 */ 511 #define ESTCPUFREQ 50 512 513 extern u_long ps_arg_cache_limit; 514 extern int ps_argsopen; 515 extern int ps_showallprocs; 516 517 struct proc *pfind (pid_t); /* Find process by id w/ref */ 518 struct proc *pfindn (pid_t); /* Find process by id wo/ref */ 519 struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */ 520 struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */ 521 void pgref (struct pgrp *); /* Ref pgrp preventing disposal */ 522 void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */ 523 524 struct globaldata; 525 struct lwp_params; 526 527 int enterpgrp (struct proc *p, pid_t pgid, int mksess); 528 void proc_add_allproc(struct proc *p); 529 void proc_move_allproc_zombie(struct proc *); 530 void proc_remove_zombie(struct proc *); 531 void allproc_scan(int (*callback)(struct proc *, void *), void *data); 532 void alllwp_scan(int (*callback)(struct lwp *, void *), void *data); 533 void zombproc_scan(int (*callback)(struct proc *, void *), void *data); 534 void fixjobc (struct proc *p, struct pgrp *pgrp, int entering); 535 void updatepcpu(struct lwp *, int, int); 536 int inferior (struct proc *p); 537 int leavepgrp (struct proc *p); 538 void sess_hold(struct session *sp); 539 void sess_rele(struct session *sp); 540 void procinit (void); 541 void procinsertinit(struct proc *p); 542 void sessinsertinit(struct session *sess); 543 void pgrpinsertinit(struct pgrp *pg); 544 void relscurproc(struct proc *curp); 545 int p_trespass (struct ucred *cr1, struct ucred *cr2); 546 void setrunnable (struct lwp *); 547 void proc_stop (struct proc *); 548 void proc_unstop (struct proc *); 549 void sleep_gdinit (struct globaldata *); 550 thread_t cpu_heavy_switch (struct thread *); 551 thread_t cpu_lwkt_switch (struct thread *); 552 553 void cpu_lwp_exit (void) __dead2; 554 void cpu_thread_exit (void) __dead2; 555 void lwp_exit (int masterexit, void *waddr) __dead2; 556 void lwp_dispose (struct lwp *); 557 int killalllwps (int); 558 void exit1 (int) __dead2; 559 void cpu_fork (struct lwp *, struct lwp *, int); 560 int cpu_prepare_lwp(struct lwp *, struct lwp_params *); 561 void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *); 562 void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg); 563 int fork1 (struct lwp *, int, struct proc **); 564 void start_forked_proc (struct lwp *, struct proc *); 565 int trace_req (struct proc *); 566 void cpu_thread_wait (struct thread *); 567 void setsugid (void); 568 void faultin (struct proc *p); 569 void swapin_request (void); 570 void phold (struct proc *); 571 void prele (struct proc *); 572 int pholdzomb (struct proc *); 573 void prelezomb (struct proc *); 574 void pstall (struct proc *, const char *, int); 575 void lwpuserret(struct lwp *); 576 void lwpkthreaddeferred(void); 577 578 u_int32_t procrunnable (void); 579 580 #endif /* _KERNEL */ 581 582 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 583 #endif /* !_SYS_PROC_H_ */ 584