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 LIST_HEAD(proclist, proc); 79 LIST_HEAD(lwplist, lwp); 80 81 struct lwp_rb_tree; 82 RB_HEAD(lwp_rb_tree, lwp); 83 RB_PROTOTYPE2(lwp_rb_tree, lwp, u.lwp_rbnode, rb_lwp_compare, lwpid_t); 84 85 /* 86 * One structure allocated per session. 87 */ 88 struct session { 89 int s_count; /* Ref cnt; pgrps in session. */ 90 struct proc *s_leader; /* Session leader. */ 91 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */ 92 struct tty *s_ttyp; /* Controlling terminal. */ 93 pid_t s_sid; /* Session ID */ 94 char s_login[roundup(MAXLOGNAME, sizeof(long))]; /* Setlogin() name. */ 95 }; 96 97 /* 98 * One structure allocated per process group. 99 */ 100 struct pgrp { 101 LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */ 102 struct proclist pg_members; /* Pointer to pgrp members. */ 103 struct session *pg_session; /* Pointer to session. */ 104 struct sigiolst pg_sigiolst; /* List of sigio sources. */ 105 pid_t pg_id; /* Pgrp id. */ 106 int pg_jobc; /* # procs qualifying pgrp for job control */ 107 u_int pg_refs; 108 struct lwkt_token pg_token; 109 struct lock pg_lock; 110 }; 111 112 #define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */ 113 #define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */ 114 #define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */ 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 struct sem_undo; 148 149 enum lwpstat { 150 LSRUN = 1, 151 LSSTOP = 2, 152 LSSLEEP = 3, 153 }; 154 155 enum procstat { 156 SIDL = 1, 157 SACTIVE = 2, 158 SSTOP = 3, 159 SZOMB = 4, 160 }; 161 162 struct lwp { 163 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */ 164 union { 165 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */ 166 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */ 167 } u; 168 169 struct proc *lwp_proc; /* Link to our proc. */ 170 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */ 171 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */ 172 173 lwpid_t lwp_tid; /* Our thread id */ 174 175 u_int lwp_flags; /* LWP_* flags */ 176 u_int lwp_mpflags; /* LWP_MP_* flags */ 177 enum lwpstat lwp_stat; /* LS* lwp status */ 178 int lwp_lock; /* lwp lock (prevent destruct) count */ 179 180 int lwp_dupfd; /* Sideways return value from fdopen */ 181 182 /* 183 * The following two fields are marked XXX since (at least) the 184 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly. 185 * These fields are used to pass the trap code from trapsignal() to 186 * postsig(), which gets called later from userret(). 187 * 188 * The correct "fix" for these XXX is to convert our signal system 189 * to use signal queues, where each signal can carry its own meta 190 * data. 191 */ 192 int lwp_sig; /* for core dump/debugger XXX */ 193 u_long lwp_code; /* for core dump/debugger XXX */ 194 195 /* 196 * Scheduling. 197 */ 198 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */ 199 sysclock_t lwp_cpbase; /* Measurement base */ 200 fixpt_t lwp_pctcpu; /* %cpu for this process */ 201 u_int lwp_slptime; /* Time since last blocked. */ 202 u_int lwp_rebal_ticks; /* Timestamp sched on current cpu */ 203 204 int lwp_traceflag; /* Kernel trace points. */ 205 206 struct rusage lwp_ru; /* stats for this lwp */ 207 208 union usched_data lwp_usdata; /* User scheduler specific */ 209 210 #define lwp_startcopy lwp_cpumask 211 cpumask_t lwp_cpumask; 212 sigset_t lwp_siglist; /* Signals arrived but not delivered. */ 213 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */ 214 sigset_t lwp_sigmask; /* Current signal mask. */ 215 stack_t lwp_sigstk; /* sp & on stack state variable */ 216 217 struct rtprio lwp_rtprio; /* Realtime priority. */ 218 #define lwp_endcopy lwp_md 219 220 struct mdproc lwp_md; /* Any machine-dependent fields. */ 221 222 struct thread *lwp_thread; /* backpointer to proc's thread */ 223 void *lwp_unused01; /* for future fields */ 224 struct kqueue lwp_kqueue; /* for select/poll */ 225 u_int lwp_kqueue_serial; 226 struct lwkt_token lwp_token; /* per-lwp token for signal/state */ 227 struct spinlock lwp_spin; /* spinlock for signal handling */ 228 void *lwp_reserveds1; /* reserved for lwp_saveusp */ 229 void *lwp_reserveds2; /* reserved for lwp_saveupc */ 230 }; 231 232 struct proc { 233 LIST_ENTRY(proc) p_list; /* List of all processes. */ 234 235 /* substructures: */ 236 struct ucred *p_ucred; /* Process owner's identity. */ 237 struct filedesc *p_fd; /* Ptr to open files structure. */ 238 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */ 239 struct plimit *p_limit; /* Process limits. */ 240 struct pstats *p_stats; 241 u_int p_mqueue_cnt; /* Count of open mqueues. */ 242 void *p_pad0; 243 struct sigacts *p_sigacts; 244 #define p_sigignore p_sigacts->ps_sigignore 245 #define p_sigcatch p_sigacts->ps_sigcatch 246 #define p_rlimit p_limit->pl_rlimit 247 248 int p_flags; /* P_* flags. */ 249 enum procstat p_stat; /* S* process status. */ 250 char p_pad1[3]; 251 252 pid_t p_pid; /* Process identifier. */ 253 LIST_ENTRY(proc) p_hash; /* Hash chain. */ 254 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ 255 struct proc *p_pptr; /* Pointer to parent process. */ 256 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ 257 struct proclist p_children; /* Pointer to list of children. */ 258 struct callout p_ithandle; /* for scheduling p_realtimer */ 259 struct varsymset p_varsymset; 260 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */ 261 262 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 263 264 struct vmspace *p_vmspace; /* Current address space. */ 265 266 unsigned int p_swtime; /* Time swapped in or out */ 267 268 struct itimerval p_realtimer; /* Alarm timer. */ 269 struct itimerval p_timer[3]; /* Virtual-time timers. */ 270 271 int p_traceflag; /* Kernel trace points. */ 272 struct ktrace_node *p_tracenode; /* Trace to vnode. */ 273 274 sigset_t p_siglist; /* Signals arrived but not delivered. */ 275 276 struct vnode *p_textvp; /* Vnode of executable. */ 277 struct nchandle p_textnch; /* namecache handle of executable. */ 278 279 unsigned int p_stops; /* procfs event bitmask */ 280 unsigned int p_stype; /* procfs stop event type */ 281 char p_step; /* procfs stop *once* flag */ 282 unsigned char p_pfsflags; /* procfs flags */ 283 char p_pad2[2]; /* padding for alignment */ 284 struct sigiolst p_sigiolst; /* list of sigio sources */ 285 int p_sigparent; /* signal to parent on exit */ 286 struct klist p_klist; /* knotes attached to this process */ 287 288 struct timeval p_start; /* start time for a process */ 289 290 struct rusage p_ru; /* stats for this proc */ 291 struct rusage p_cru; /* sum of stats for reaped children */ 292 void *p_dsched_priv1; 293 294 /* The following fields are all copied upon creation in fork. */ 295 #define p_startcopy p_comm 296 297 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */ 298 char p_pad3; /* Process lock (prevent destruct) count. */ 299 char p_nice; /* Process "nice" value. */ 300 char p_pad4; 301 int p_osrel; /* release date for binary ELF note */ 302 303 struct pgrp *p_pgrp; /* Pointer to process group. */ 304 305 struct sysentvec *p_sysent; /* System call dispatch information. */ 306 307 struct uprof p_prof; /* Profiling arguments. */ 308 struct rtprio p_rtprio; /* Realtime priority. */ 309 struct pargs *p_args; 310 u_short p_xstat; /* Exit status or last stop signal */ 311 312 int p_ionice; 313 void *p_dsched_priv2; 314 /* End area that is copied on creation. */ 315 #define p_endcopy p_dsched_priv2 316 u_short p_acflag; /* Accounting flags. */ 317 318 int p_lock; /* Prevent proc destruction */ 319 int p_nthreads; /* Number of threads in this process. */ 320 int p_nstopped; /* Number of stopped threads. */ 321 int p_lasttid; /* Last tid used. */ 322 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */ 323 void *p_aioinfo; /* ASYNC I/O info */ 324 int p_wakeup; /* thread id XXX lwp */ 325 struct proc *p_peers; /* XXX lwp */ 326 struct proc *p_leader; /* XXX lwp */ 327 void *p_emuldata; /* process-specific emulator state */ 328 struct usched *p_usched; /* Userland scheduling control */ 329 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */ 330 int p_numposixlocks; /* number of POSIX locks */ 331 void (*p_userret)(void);/* p: return-to-user hook */ 332 333 struct spinlock p_spin; /* Spinlock for LWP access to proc */ 334 struct lwkt_token p_token; /* Token for LWP access to proc */ 335 struct sem_undo *p_sem_undo; /* Fast semaphore tracking lookup */ 336 }; 337 338 #define lwp_wchan lwp_thread->td_wchan 339 #define lwp_wmesg lwp_thread->td_wmesg 340 #define p_session p_pgrp->pg_session 341 #define p_pgid p_pgrp->pg_id 342 343 /* These flags are kept in p_flags. */ 344 #define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */ 345 #define P_CONTROLT 0x00002 /* Has a controlling terminal */ 346 #define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */ 347 #define P_SYSVSEM 0x00008 /* Might have SysV semaphores */ 348 #define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */ 349 #define P_PROFIL 0x00020 /* Has started profiling */ 350 #define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */ 351 #define P_UNUSED7 0x00080 /* was: Sleep is interruptible */ 352 #define P_SUGID 0x00100 /* Had set id privileges since last exec */ 353 #define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */ 354 #define P_UNUSED10 0x00400 /* was: SIGSTOP status */ 355 #define P_TRACED 0x00800 /* Debugged process being traced */ 356 #define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */ 357 #define P_WEXIT 0x02000 /* Working on exiting (master exit) */ 358 #define P_EXEC 0x04000 /* Process called exec */ 359 #define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */ 360 361 #define P_UNUSED16 0x00010000 362 #define P_UNUSED17 0x00020000 363 364 #define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */ 365 #define P_UNUSED19 0x00080000 /* was: Now in a zombied state */ 366 367 /* Marked a kernel thread */ 368 #define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */ 369 #define P_KTHREADP 0x00200000 /* Process is really a kernel thread */ 370 #define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */ 371 372 #define P_JAILED 0x01000000 /* Process is in jail */ 373 #define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */ 374 #define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */ 375 #define P_INEXEC 0x08000000 /* Process is in execve(). */ 376 #define P_UNUSED28 0x10000000 377 #define P_UNUSED29 0x20000000 378 #define P_XCPU 0x40000000 /* SIGXCPU */ 379 380 #define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */ 381 #define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */ 382 #define LWP_SINTR 0x0000008 /* Sleep is interruptible. */ 383 #define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */ 384 #define LWP_UNUSED20 0x0000020 385 #define LWP_UNUSED40 0x0000040 386 #define LWP_UNUSED80 0x0000080 387 #define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */ 388 #define LWP_PAGING 0x0000200 /* Currently in vm_fault */ 389 390 /* 391 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland 392 * and has been counted in the process stop-threads-count, but 393 * may still be running in kernel-land. 394 * 395 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return 396 * to userland. p_nthreads will not be decremented until the 397 * thread has actually exited. 398 */ 399 #define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */ 400 #define LWP_MP_WEXIT 0x0000002 /* working on exiting (lwpuserret()) */ 401 #define LWP_MP_WSTOP 0x0000004 /* working on stopping */ 402 #define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */ 403 #define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */ 404 #define LWP_MP_VNLRU 0x0000020 /* check excessive vnode allocations (lwpuserret()) */ 405 406 #define LWP_MP_URETMASK (LWP_MP_WEXIT | LWP_MP_VNLRU) 407 408 #define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree) 409 #define FOREACH_LWP_IN_PROC(lp, p) \ 410 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree) 411 #define ONLY_LWP_IN_PROC(p) \ 412 (p->p_nthreads != 1 && \ 413 (panic("%s: proc %p (pid %d cmd %s) has more than one thread", \ 414 __func__, p, p->p_pid, p->p_comm), 1), \ 415 RB_ROOT(&p->p_lwp_tree)) 416 417 /* 418 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, 419 * as it is used to represent "no process group". 420 */ 421 #define PID_MAX 99999 422 #define NO_PID 100000 423 424 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 425 426 #ifdef _KERNEL 427 428 #ifdef MALLOC_DECLARE 429 MALLOC_DECLARE(M_SESSION); 430 MALLOC_DECLARE(M_PROC); 431 MALLOC_DECLARE(M_LWP); 432 MALLOC_DECLARE(M_SUBPROC); 433 MALLOC_DECLARE(M_PARGS); 434 #endif 435 436 /* for priv_check_cred() */ 437 #define NULL_CRED_OKAY 0x2 438 439 /* Handy macro to determine if p1 can mangle p2 */ 440 441 #define PRISON_CHECK(cr1, cr2) \ 442 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison) 443 444 /* 445 * STOPEVENT 446 */ 447 extern void stopevent(struct proc*, unsigned int, unsigned int); 448 #define STOPEVENT(p,e,v) \ 449 do { \ 450 if ((p)->p_stops & (e)) { \ 451 stopevent(p,e,v); \ 452 } \ 453 } while (0) 454 455 /* 456 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio, 457 * and signaling code (e.g. ksignal()). 458 * 459 * MPSAFE 460 */ 461 #define PHOLD(p) phold((p)) 462 #define PRELE(p) prele((p)) 463 #define PHOLDZOMB(p) pholdzomb((p)) 464 #define PRELEZOMB(p) prelezomb((p)) 465 #define PSTALL(p, msg, n) \ 466 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0) 467 468 /* 469 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work 470 * atomic ops because they can occur from an IPI. 471 * MPSAFE 472 */ 473 #define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1) 474 #define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1) 475 476 #define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) 477 extern LIST_HEAD(pidhashhead, proc) *pidhashtbl; 478 extern u_long pidhash; 479 480 #define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) 481 extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; 482 extern u_long pgrphash; 483 484 #if 0 485 #ifndef SET_CURPROC 486 #define SET_CURPROC(p) (curproc = (p)) 487 #endif 488 #endif 489 490 extern struct proc proc0; /* Process slot for swapper. */ 491 extern struct lwp lwp0; /* LWP slot for swapper. */ 492 extern struct thread thread0; /* Thread slot for swapper. */ 493 extern int hogticks; /* Limit on kernel cpu hogs. */ 494 extern int nprocs, maxproc; /* Current and max number of procs. */ 495 extern int maxprocperuid; /* Max procs per uid. */ 496 extern int sched_quantum; /* Scheduling quantum in ticks */ 497 498 extern struct proclist allproc; /* List of all processes. */ 499 extern struct proclist zombproc; /* List of zombie processes. */ 500 extern struct proc *initproc; /* Process slot for init */ 501 extern struct thread *pagethread, *updatethread; 502 503 /* 504 * Scheduler independant variables. The primary scheduler polling frequency, 505 * the maximum ESTCPU value, and the weighting factor for nice values. A 506 * cpu bound program's estcpu will increase to ESTCPUMAX - 1. 507 */ 508 #define ESTCPUFREQ 50 509 510 extern u_long ps_arg_cache_limit; 511 extern int ps_argsopen; 512 extern int ps_showallprocs; 513 514 struct proc *pfind (pid_t); /* Find process by id w/ref */ 515 struct proc *pfindn (pid_t); /* Find process by id wo/ref */ 516 struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */ 517 struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */ 518 void pgref (struct pgrp *); /* Ref pgrp preventing disposal */ 519 void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */ 520 521 struct globaldata; 522 struct lwp_params; 523 524 int enterpgrp (struct proc *p, pid_t pgid, int mksess); 525 void proc_add_allproc(struct proc *p); 526 void proc_move_allproc_zombie(struct proc *); 527 void proc_remove_zombie(struct proc *); 528 void allproc_scan(int (*callback)(struct proc *, void *), void *data); 529 void alllwp_scan(int (*callback)(struct lwp *, void *), void *data); 530 void zombproc_scan(int (*callback)(struct proc *, void *), void *data); 531 void fixjobc (struct proc *p, struct pgrp *pgrp, int entering); 532 void updatepcpu(struct lwp *, int, int); 533 int inferior (struct proc *p); 534 int leavepgrp (struct proc *p); 535 void sess_hold(struct session *sp); 536 void sess_rele(struct session *sp); 537 void procinit (void); 538 void relscurproc(struct proc *curp); 539 int p_trespass (struct ucred *cr1, struct ucred *cr2); 540 void setrunnable (struct lwp *); 541 void proc_stop (struct proc *); 542 void proc_unstop (struct proc *); 543 void sleep_gdinit (struct globaldata *); 544 int suser (struct thread *td); 545 int suser_cred (struct ucred *cred, int flag); 546 thread_t cpu_heavy_switch (struct thread *); 547 thread_t cpu_lwkt_switch (struct thread *); 548 549 void cpu_lwp_exit (void) __dead2; 550 void cpu_thread_exit (void) __dead2; 551 void lwp_exit (int masterexit) __dead2; 552 void lwp_dispose (struct lwp *); 553 int killalllwps (int); 554 void exit1 (int) __dead2; 555 void cpu_fork (struct lwp *, struct lwp *, int); 556 int cpu_prepare_lwp(struct lwp *, struct lwp_params *); 557 void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *); 558 void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg); 559 int fork1 (struct lwp *, int, struct proc **); 560 void start_forked_proc (struct lwp *, struct proc *); 561 int trace_req (struct proc *); 562 void cpu_thread_wait (struct thread *); 563 void setsugid (void); 564 void faultin (struct proc *p); 565 void swapin_request (void); 566 void phold (struct proc *); 567 void prele (struct proc *); 568 int pholdzomb (struct proc *); 569 void prelezomb (struct proc *); 570 void pstall (struct proc *, const char *, int); 571 void lwpuserret(struct lwp *); 572 void lwpkthreaddeferred(void); 573 574 u_int32_t procrunnable (void); 575 576 #endif /* _KERNEL */ 577 578 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 579 #endif /* !_SYS_PROC_H_ */ 580