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 * $DragonFly: src/sys/sys/proc.h,v 1.121 2008/07/23 17:22:33 dillon Exp $ 41 */ 42 43 #ifndef _SYS_PROC_H_ 44 #define _SYS_PROC_H_ 45 46 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES) 47 48 #error "Userland must include sys/user.h instead of sys/proc.h" 49 50 #else 51 52 #include <sys/callout.h> /* For struct callout_handle. */ 53 #include <sys/filedesc.h> 54 #include <sys/queue.h> 55 #include <sys/tree.h> 56 #include <sys/rtprio.h> /* For struct rtprio. */ 57 #include <sys/signal.h> 58 #include <sys/lock.h> 59 #ifndef _KERNEL 60 #include <sys/time.h> /* For structs itimerval, timeval. */ 61 #endif 62 #include <sys/ucred.h> 63 #include <sys/event.h> /* For struct klist */ 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 struct lock pg_lock; /* Lock during fork */ 109 }; 110 111 #define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */ 112 #define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */ 113 114 /* 115 * pargs, used to hold a copy of the command line, if it had a sane 116 * length 117 */ 118 struct pargs { 119 u_int ar_ref; /* Reference count */ 120 u_int ar_length; /* Length */ 121 u_char ar_args[0]; /* Arguments */ 122 }; 123 124 /* 125 * Description of a process. 126 * 127 * This structure contains the information needed to manage a thread of 128 * control, known in UN*X as a process; it has references to substructures 129 * containing descriptions of things that the process uses, but may share 130 * with related processes. The process structure and the substructures 131 * are always addressable except for those marked "(PROC ONLY)" below, 132 * which might be addressable only on a processor on which the process 133 * is running. 134 * 135 * NOTE! The process start time is stored in the thread structure associated 136 * with the process. If the process is a Zombie, then this field will be 137 * inaccessible due to the thread structure being free'd in kern_wait1(). 138 */ 139 140 struct jail; 141 struct vkernel_proc; 142 struct vkernel_lwp; 143 struct vmspace_entry; 144 struct ktrace_node; 145 146 enum lwpstat { 147 LSRUN = 1, 148 LSSTOP = 2, 149 LSSLEEP = 3, 150 }; 151 152 enum procstat { 153 SIDL = 1, 154 SACTIVE = 2, 155 SSTOP = 3, 156 SZOMB = 4, 157 }; 158 159 struct lwp { 160 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */ 161 union { 162 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */ 163 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */ 164 } u; 165 166 struct proc *lwp_proc; /* Link to our proc. */ 167 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */ 168 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */ 169 170 lwpid_t lwp_tid; /* Our thread id . */ 171 172 int lwp_flag; /* LWP_* flags. */ 173 enum lwpstat lwp_stat; /* LS* lwp status. */ 174 int lwp_lock; /* lwp lock (prevent destruct) count */ 175 176 int lwp_dupfd; /* Sideways return value from fdopen. XXX */ 177 178 /* 179 * The following two fields are marked XXX since (at least) the 180 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly. 181 * These fields are used to pass the trap code from trapsignal() to 182 * postsig(), which gets called later from userret(). 183 * 184 * The correct "fix" for these XXX is to convert our signal system 185 * to use signal queues, where each signal can carry its own meta 186 * data. 187 */ 188 int lwp_sig; /* for core dump/debugger XXX */ 189 u_long lwp_code; /* for core dump/debugger XXX */ 190 191 /* 192 * Scheduling. 193 */ 194 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */ 195 sysclock_t lwp_cpbase; /* Measurement base */ 196 fixpt_t lwp_pctcpu; /* %cpu for this process */ 197 u_int lwp_slptime; /* Time since last blocked. */ 198 199 int lwp_traceflag; /* Kernel trace points. */ 200 201 struct rusage lwp_ru; /* stats for this lwp */ 202 203 union usched_data lwp_usdata; /* User scheduler specific */ 204 205 #define lwp_startcopy lwp_cpumask 206 cpumask_t lwp_cpumask; 207 sigset_t lwp_siglist; /* Signals arrived but not delivered. */ 208 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */ 209 sigset_t lwp_sigmask; /* Current signal mask. */ 210 stack_t lwp_sigstk; /* sp & on stack state variable */ 211 212 struct rtprio lwp_rtprio; /* Realtime priority. */ 213 #define lwp_endcopy lwp_md 214 215 struct mdproc lwp_md; /* Any machine-dependent fields. */ 216 217 struct thread *lwp_thread; /* backpointer to proc's thread */ 218 struct upcall *lwp_upcall; /* REGISTERED USERLAND POINTER! */ 219 }; 220 221 struct proc { 222 LIST_ENTRY(proc) p_list; /* List of all processes. */ 223 224 /* substructures: */ 225 struct ucred *p_ucred; /* Process owner's identity. */ 226 struct filedesc *p_fd; /* Ptr to open files structure. */ 227 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */ 228 struct plimit *p_limit; /* Process limits. */ 229 struct pstats *p_stats; 230 void *p_pad0; 231 struct sigacts *p_sigacts; 232 #define p_sigignore p_sigacts->ps_sigignore 233 #define p_sigcatch p_sigacts->ps_sigcatch 234 #define p_rlimit p_limit->pl_rlimit 235 236 int p_flag; /* P_* flags. */ 237 enum procstat p_stat; /* S* process status. */ 238 char p_pad1[3]; 239 240 pid_t p_pid; /* Process identifier. */ 241 LIST_ENTRY(proc) p_hash; /* Hash chain. */ 242 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ 243 struct proc *p_pptr; /* Pointer to parent process. */ 244 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ 245 struct proclist p_children; /* Pointer to list of children. */ 246 struct callout p_ithandle; /* for scheduling p_realtimer */ 247 struct varsymset p_varsymset; 248 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */ 249 250 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 251 252 struct vmspace *p_vmspace; /* Current address space. */ 253 254 unsigned int p_swtime; /* Time swapped in or out */ 255 256 struct itimerval p_realtimer; /* Alarm timer. */ 257 struct itimerval p_timer[3]; /* Virtual-time timers. */ 258 259 int p_traceflag; /* Kernel trace points. */ 260 struct ktrace_node *p_tracenode; /* Trace to vnode. */ 261 262 sigset_t p_siglist; /* Signals arrived but not delivered. */ 263 264 struct vnode *p_textvp; /* Vnode of executable. */ 265 266 unsigned int p_stops; /* procfs event bitmask */ 267 unsigned int p_stype; /* procfs stop event type */ 268 char p_step; /* procfs stop *once* flag */ 269 unsigned char p_pfsflags; /* procfs flags */ 270 char p_pad2[2]; /* padding for alignment */ 271 struct sigiolst p_sigiolst; /* list of sigio sources */ 272 int p_sigparent; /* signal to parent on exit */ 273 struct klist p_klist; /* knotes attached to this process */ 274 275 struct timeval p_start; /* start time for a process */ 276 277 struct rusage p_ru; /* stats for this proc */ 278 struct rusage p_cru; /* sum of stats for reaped children */ 279 280 /* The following fields are all copied upon creation in fork. */ 281 #define p_startcopy p_comm 282 283 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */ 284 char p_lock; /* Process lock (prevent destruct) count. */ 285 char p_nice; /* Process "nice" value. */ 286 char p_pad3; 287 288 struct pgrp *p_pgrp; /* Pointer to process group. */ 289 290 struct sysentvec *p_sysent; /* System call dispatch information. */ 291 292 struct uprof p_prof; /* Profiling arguments. */ 293 struct rtprio p_rtprio; /* Realtime priority. */ 294 struct pargs *p_args; 295 /* End area that is copied on creation. */ 296 #define p_endcopy p_xstat 297 298 u_short p_xstat; /* Exit status or last stop signal */ 299 u_short p_acflag; /* Accounting flags. */ 300 301 int p_nthreads; /* Number of threads in this process. */ 302 int p_nstopped; /* Number of stopped threads. */ 303 int p_lasttid; /* Last tid used. */ 304 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */ 305 void *p_aioinfo; /* ASYNC I/O info */ 306 int p_wakeup; /* thread id XXX lwp */ 307 struct proc *p_peers; /* XXX lwp */ 308 struct proc *p_leader; /* XXX lwp */ 309 void *p_emuldata; /* process-specific emulator state */ 310 struct usched *p_usched; /* Userland scheduling control */ 311 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */ 312 int p_numposixlocks; /* number of POSIX locks */ 313 314 struct spinlock p_spin; /* Spinlock for LWP access to proc */ 315 }; 316 317 #define lwp_wchan lwp_thread->td_wchan 318 #define lwp_wmesg lwp_thread->td_wmesg 319 #define p_session p_pgrp->pg_session 320 #define p_pgid p_pgrp->pg_id 321 322 /* These flags are kept in p_flags. */ 323 #define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock. */ 324 #define P_CONTROLT 0x00002 /* Has a controlling terminal. */ 325 #define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */ 326 #define P_UNUSED3 0x00008 /* was: Event pending, break tsleep on sigcont */ 327 #define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit. */ 328 #define P_PROFIL 0x00020 /* Has started profiling. */ 329 #define P_UNUSED5 0x00040 /* was: Selecting; wakeup/waiting danger. */ 330 #define P_UNUSED4 0x00080 /* was: Sleep is interruptible. */ 331 #define P_SUGID 0x00100 /* Had set id privileges since last exec. */ 332 #define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping. */ 333 #define P_UNUSED2 0x00400 /* was: SIGSTOP status */ 334 #define P_TRACED 0x00800 /* Debugged process being traced. */ 335 #define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */ 336 #define P_WEXIT 0x02000 /* Working on exiting (master exit) */ 337 #define P_EXEC 0x04000 /* Process called exec. */ 338 #define P_CONTINUED 0x08000 /* Proc has continued from a stopped state. */ 339 340 /* Should probably be changed into a hold count. */ 341 /* was P_NOSWAP 0x08000 was: Do not swap upages; p->p_hold */ 342 #define P_MAILBOX 0x10000 /* Possible mailbox signal pending */ 343 344 #define P_UPCALLPEND 0x20000 /* an upcall is pending */ 345 346 #define P_SWAPWAIT 0x40000 /* Waiting for a swapin */ 347 #define P_UNUSED6 0x80000 /* was: Now in a zombied state */ 348 349 /* Marked a kernel thread */ 350 #define P_UNUSED07 0x100000 /* was: on a user scheduling run queue */ 351 #define P_KTHREADP 0x200000 /* Process is really a kernel thread */ 352 #define P_IDLESWAP 0x400000 /* Swapout was due to idleswap, not load */ 353 #define P_DEADLKTREAT 0x800000 /* lock aquisition - deadlock treatment */ 354 355 #define P_JAILED 0x1000000 /* Process is in jail */ 356 #define P_UNUSED0 0x2000000 /* need to restore mask before pause */ 357 #define P_UNUSED1 0x4000000 /* have alternate signal stack */ 358 #define P_INEXEC 0x8000000 /* Process is in execve(). */ 359 #define P_PASSIVE_ACQ 0x10000000 /* Passive acquire cpu (see kern_switch) */ 360 #define P_UPCALLWAIT 0x20000000 /* Wait for upcall or signal */ 361 #define P_XCPU 0x40000000 /* SIGXCPU */ 362 363 /* 364 * LWP_WSTOP: When set the thread will stop prior to return to userland 365 * and has been counted in the process stop-threads-count, but 366 * may still be running in kernel-land. 367 * 368 * LWP_WEXIT: When set the thread has been asked to exit and will not return 369 * to userland. p_nthreads will not be decremented until the 370 * thread has actually exited. 371 */ 372 #define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */ 373 #define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */ 374 #define LWP_BREAKTSLEEP 0x0000004 /* Event pending, break tsleep on sigcont */ 375 #define LWP_SINTR 0x0000008 /* Sleep is interruptible. */ 376 #define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */ 377 #define LWP_ONRUNQ 0x0000020 /* on a user scheduling run queue */ 378 #define LWP_WEXIT 0x0000040 /* working on exiting */ 379 #define LWP_WSTOP 0x0000080 /* working on stopping */ 380 381 #define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree) 382 #define FOREACH_LWP_IN_PROC(lp, p) \ 383 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree) 384 #define ONLY_LWP_IN_PROC(p) \ 385 (p->p_nthreads != 1 && \ 386 (panic("%s: proc %p (pid %d cmd %s) has more than one thread", \ 387 __func__, p, p->p_pid, p->p_comm), 1), \ 388 RB_ROOT(&p->p_lwp_tree)) 389 390 /* 391 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, 392 * as it is used to represent "no process group". 393 */ 394 #define PID_MAX 99999 395 #define NO_PID 100000 396 397 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 398 399 #ifdef _KERNEL 400 401 #ifdef MALLOC_DECLARE 402 MALLOC_DECLARE(M_SESSION); 403 MALLOC_DECLARE(M_PROC); 404 MALLOC_DECLARE(M_LWP); 405 MALLOC_DECLARE(M_SUBPROC); 406 MALLOC_DECLARE(M_PARGS); 407 #endif 408 409 /* for priv_check_cred() */ 410 #define NULL_CRED_OKAY 0x2 411 412 /* Handy macro to determine if p1 can mangle p2 */ 413 414 #define PRISON_CHECK(cr1, cr2) \ 415 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison) 416 417 /* 418 * STOPEVENT 419 */ 420 extern void stopevent(struct proc*, unsigned int, unsigned int); 421 #define STOPEVENT(p,e,v) \ 422 do { \ 423 if ((p)->p_stops & (e)) { \ 424 stopevent(p,e,v); \ 425 } \ 426 } while (0) 427 428 /* hold process in memory, don't destruct , normally for ptrace/procfs work */ 429 #define PHOLD(p) (++(p)->p_lock) 430 #define PRELE(p) (--(p)->p_lock) 431 432 /* hold lwp in memory, don't destruct , normally for ptrace/procfs work */ 433 /* atomic ops because they can occur from an IPI */ 434 #define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1) 435 #define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1) 436 437 #define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) 438 extern LIST_HEAD(pidhashhead, proc) *pidhashtbl; 439 extern u_long pidhash; 440 441 #define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) 442 extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; 443 extern u_long pgrphash; 444 445 #if 0 446 #ifndef SET_CURPROC 447 #define SET_CURPROC(p) (curproc = (p)) 448 #endif 449 #endif 450 451 extern struct proc proc0; /* Process slot for swapper. */ 452 extern struct lwp lwp0; /* LWP slot for swapper. */ 453 extern struct thread thread0; /* Thread slot for swapper. */ 454 extern int hogticks; /* Limit on kernel cpu hogs. */ 455 extern int nprocs, maxproc; /* Current and max number of procs. */ 456 extern int maxprocperuid; /* Max procs per uid. */ 457 extern int sched_quantum; /* Scheduling quantum in ticks */ 458 459 extern struct proclist allproc; /* List of all processes. */ 460 extern struct proclist zombproc; /* List of zombie processes. */ 461 extern struct proc *initproc; /* Process slot for init */ 462 extern struct thread *pagethread, *updatethread; 463 464 /* 465 * Scheduler independant variables. The primary scheduler polling frequency, 466 * the maximum ESTCPU value, and the weighting factor for nice values. A 467 * cpu bound program's estcpu will increase to ESTCPUMAX - 1. 468 */ 469 #define ESTCPUFREQ 50 470 471 extern u_long ps_arg_cache_limit; 472 extern int ps_argsopen; 473 extern int ps_showallprocs; 474 475 struct proc *pfind (pid_t); /* Find process by id. */ 476 struct pgrp *pgfind (pid_t); /* Find process group by id. */ 477 struct proc *zpfind (pid_t); /* Find zombie process by id. */ 478 479 struct globaldata; 480 struct lwp_params; 481 482 int enterpgrp (struct proc *p, pid_t pgid, int mksess); 483 void proc_add_allproc(struct proc *p); 484 void proc_move_allproc_zombie(struct proc *); 485 void proc_remove_zombie(struct proc *); 486 void allproc_scan(int (*callback)(struct proc *, void *), void *data); 487 void alllwp_scan(int (*callback)(struct lwp *, void *), void *data); 488 void zombproc_scan(int (*callback)(struct proc *, void *), void *data); 489 void fixjobc (struct proc *p, struct pgrp *pgrp, int entering); 490 void updatepcpu(struct lwp *, int, int); 491 int inferior (struct proc *p); 492 int leavepgrp (struct proc *p); 493 void sess_hold(struct session *sp); 494 void sess_rele(struct session *sp); 495 void procinit (void); 496 void relscurproc(struct proc *curp); 497 int p_trespass (struct ucred *cr1, struct ucred *cr2); 498 void setrunnable (struct lwp *); 499 void proc_stop (struct proc *); 500 void proc_unstop (struct proc *); 501 void sleep_gdinit (struct globaldata *); 502 int suser (struct thread *td); 503 int suser_cred (struct ucred *cred, int flag); 504 void cpu_heavy_switch (struct thread *); 505 void cpu_lwkt_switch (struct thread *); 506 507 void cpu_lwp_exit (void) __dead2; 508 void cpu_thread_exit (void) __dead2; 509 void lwp_exit (int masterexit) __dead2; 510 void lwp_dispose (struct lwp *); 511 int killalllwps (int); 512 void exit1 (int) __dead2; 513 void cpu_fork (struct lwp *, struct lwp *, int); 514 int cpu_prepare_lwp(struct lwp *, struct lwp_params *); 515 void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *); 516 void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg); 517 int fork1 (struct lwp *, int, struct proc **); 518 void start_forked_proc (struct lwp *, struct proc *); 519 int trace_req (struct proc *); 520 void cpu_proc_wait (struct proc *); 521 void cpu_thread_wait (struct thread *); 522 void setsugid (void); 523 void faultin (struct proc *p); 524 void swapin_request (void); 525 526 u_int32_t procrunnable (void); 527 528 #endif /* _KERNEL */ 529 530 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 531 #endif /* !_SYS_PROC_H_ */ 532