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 #ifndef _SYS_PROC_H_ 39 #define _SYS_PROC_H_ 40 41 #if !defined(_KERNEL) && !defined(_KERNEL_STRUCTURES) 42 43 #error "Userland must include sys/user.h instead of sys/proc.h" 44 45 #else 46 47 #include <sys/callout.h> /* For struct callout. */ 48 #include <sys/filedesc.h> 49 #include <sys/queue.h> 50 #include <sys/tree.h> 51 #include <sys/rtprio.h> /* For struct rtprio. */ 52 #include <sys/signal.h> 53 #include <sys/lock.h> 54 #include <sys/upmap.h> 55 #ifndef _KERNEL 56 #include <sys/time.h> /* For structs itimerval, timeval. */ 57 #endif 58 #include <sys/ucred.h> 59 #include <sys/event.h> /* For struct klist */ 60 #include <sys/eventvar.h> 61 #include <sys/sysent.h> /* For struct sysentvec */ 62 #include <sys/thread.h> 63 #include <sys/varsym.h> 64 #include <sys/resourcevar.h> 65 #ifdef _KERNEL 66 #include <sys/procctl.h> 67 #include <sys/globaldata.h> 68 #endif 69 #include <sys/systimer.h> 70 #include <sys/iosched.h> 71 #include <sys/usched.h> 72 #include <machine/proc.h> /* Machine-dependent proc substruct. */ 73 #include <machine/atomic.h> /* Machine-dependent proc substruct. */ 74 #include <sys/signalvar.h> 75 76 struct proc; 77 struct pgrp; 78 struct session; 79 struct lwp; 80 81 LIST_HEAD(proclist, proc); 82 LIST_HEAD(pgrplist, pgrp); 83 LIST_HEAD(sesslist, session); 84 LIST_HEAD(lwplist, lwp); 85 86 struct lwp_rb_tree; 87 RB_HEAD(lwp_rb_tree, lwp); 88 RB_PROTOTYPE2(lwp_rb_tree, lwp, u.lwp_rbnode, rb_lwp_compare, lwpid_t); 89 90 /* 91 * One structure allocated per session. 92 */ 93 struct session { 94 LIST_ENTRY(session) s_list; /* Hash chain. */ 95 int s_count; /* Ref cnt; pgrps in session. */ 96 struct proc *s_leader; /* Session leader. */ 97 struct vnode *s_ttyvp; /* Vnode of controlling terminal. */ 98 struct tty *s_ttyp; /* Controlling terminal. */ 99 pid_t s_sid; /* Session ID */ 100 char s_login[roundup(MAXLOGNAME, sizeof(long))]; /* Setlogin() name. */ 101 }; 102 103 /* 104 * One structure allocated per process group. 105 */ 106 struct pgrp { 107 LIST_ENTRY(pgrp) pg_list; /* Hash chain. */ 108 struct proclist pg_members; /* Pointer to pgrp members. */ 109 struct session *pg_session; /* Pointer to session. */ 110 struct sigiolst pg_sigiolst; /* List of sigio sources. */ 111 pid_t pg_id; /* Pgrp id. */ 112 int pg_jobc; /* # procs qualifying pgrp for job control */ 113 u_int pg_refs; 114 struct lwkt_token pg_token; 115 struct lock pg_lock; 116 }; 117 118 #define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */ 119 #define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */ 120 #define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */ 121 122 /* 123 * pargs, used to hold a copy of the command line, if it had a sane 124 * length 125 */ 126 struct pargs { 127 u_int ar_ref; /* Reference count */ 128 u_int ar_length; /* Length */ 129 u_char ar_args[0]; /* Arguments */ 130 }; 131 132 /* 133 * Description of a process. 134 * 135 * This structure contains the information needed to manage a thread of 136 * control, known in UN*X as a process; it has references to substructures 137 * containing descriptions of things that the process uses, but may share 138 * with related processes. The process structure and the substructures 139 * are always addressable except for those marked "(PROC ONLY)" below, 140 * which might be addressable only on a processor on which the process 141 * is running. 142 * 143 * NOTE! The process start time is stored in the thread structure associated 144 * with the process. If the process is a Zombie, then this field will be 145 * inaccessible due to the thread structure being free'd in kern_wait1(). 146 */ 147 148 struct jail; 149 struct vkernel_proc; 150 struct vkernel_lwp; 151 struct vmspace_entry; 152 struct ktrace_node; 153 struct sem_undo; 154 155 enum lwpstat { 156 LSRUN = 1, 157 LSSTOP = 2, 158 LSSLEEP = 3, 159 }; 160 161 enum procstat { 162 SIDL = 1, 163 SACTIVE = 2, 164 SSTOP = 3, 165 SZOMB = 4, 166 SCORE = 5, 167 }; 168 169 struct lwp { 170 TAILQ_ENTRY(lwp) lwp_procq; /* run/sleep queue. */ 171 union { 172 RB_ENTRY(lwp) lwp_rbnode; /* RB tree node - lwp in proc */ 173 LIST_ENTRY(lwp) lwp_reap_entry; /* reaper list */ 174 } u; 175 176 struct proc *lwp_proc; /* Link to our proc. */ 177 struct vmspace *lwp_vmspace; /* Inherited from p_vmspace */ 178 struct vkernel_lwp *lwp_vkernel;/* VKernel support, lwp part */ 179 180 lwpid_t lwp_tid; /* Our thread id */ 181 182 u_int lwp_flags; /* LWP_* flags */ 183 u_int lwp_mpflags; /* LWP_MP_* flags */ 184 enum lwpstat lwp_stat; /* LS* lwp status */ 185 int lwp_lock; /* lwp lock (prevent destruct) count */ 186 187 int lwp_dupfd; /* Sideways return value from fdopen */ 188 189 /* 190 * The following two fields are marked XXX since (at least) the 191 * 4.4BSD-Lite2 import. I can only guess the reason: It is ugly. 192 * These fields are used to pass the trap code from trapsignal() to 193 * postsig(), which gets called later from userret(). 194 * 195 * The correct "fix" for these XXX is to convert our signal system 196 * to use signal queues, where each signal can carry its own meta 197 * data. 198 */ 199 int lwp_sig; /* for core dump/debugger XXX */ 200 u_long lwp_code; /* for core dump/debugger XXX */ 201 202 /* 203 * Scheduling. 204 */ 205 sysclock_t lwp_cpticks; /* cpu used in sched clock ticks */ 206 sysclock_t lwp_cpbase; /* Measurement base */ 207 fixpt_t lwp_pctcpu; /* %cpu for this process */ 208 u_int lwp_slptime; /* Time since last blocked. */ 209 u_int lwp_rebal_ticks; /* Timestamp sched on current cpu */ 210 211 int lwp_traceflag; /* Kernel trace points. */ 212 213 struct rusage lwp_ru; /* stats for this lwp */ 214 215 union usched_data lwp_usdata; /* User scheduler specific */ 216 217 #define lwp_startcopy lwp_cpumask 218 cpumask_t lwp_cpumask; 219 sigset_t lwp_siglist; /* Signals arrived but not delivered. */ 220 sigset_t lwp_oldsigmask; /* saved mask from before sigpause */ 221 sigset_t lwp_sigmask; /* Current signal mask. */ 222 stack_t lwp_sigstk; /* sp & on stack state variable */ 223 224 struct rtprio lwp_rtprio; /* Realtime priority. */ 225 #define lwp_endcopy lwp_md 226 227 struct mdproc lwp_md; /* Any machine-dependent fields. */ 228 229 struct thread *lwp_thread; /* backpointer to proc's thread */ 230 void *lwp_unused01; /* for future fields */ 231 struct kqueue lwp_kqueue; /* for select/poll */ 232 u_int lwp_kqueue_serial; 233 struct lwkt_token lwp_token; /* per-lwp token for signal/state */ 234 struct spinlock lwp_spin; /* spinlock for signal handling */ 235 void *lwp_reserveds1; /* reserved for lwp_saveusp */ 236 void *lwp_reserveds2; /* reserved for lwp_saveupc */ 237 }; 238 239 struct proc { 240 LIST_ENTRY(proc) p_list; /* List of all processes. */ 241 242 /* substructures: */ 243 struct ucred *p_ucred; /* Process owner's identity. */ 244 struct filedesc *p_fd; /* Ptr to open files structure. */ 245 struct filedesc_to_leader *p_fdtol; /* Ptr to tracking node XXX lwp */ 246 struct plimit *p_limit; /* Process limits. */ 247 struct pstats *p_stats; 248 u_int p_mqueue_cnt; /* Count of open mqueues. */ 249 long p_waitgen; /* wait interlock allows late signal */ 250 struct sigacts *p_sigacts; 251 #define p_sigignore p_sigacts->ps_sigignore 252 #define p_sigcatch p_sigacts->ps_sigcatch 253 #define p_rlimit p_limit->pl_rlimit 254 255 int p_flags; /* P_* flags. */ 256 enum procstat p_stat; /* S* process status. */ 257 char p_pad1[3]; 258 259 pid_t p_pid; /* Process identifier. */ 260 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ 261 struct proc *p_pptr; /* Pointer to parent process. */ 262 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ 263 struct proclist p_children; /* Pointer to list of children. */ 264 struct callout p_ithandle; /* for scheduling p_realtimer */ 265 struct varsymset p_varsymset; 266 struct iosched_data p_iosdata; /* Dynamic I/O scheduling data */ 267 268 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 269 270 struct vmspace *p_vmspace; /* Current address space. */ 271 272 unsigned int p_swtime; /* Time swapped in or out */ 273 274 struct itimerval p_realtimer; /* Alarm timer. */ 275 struct itimerval p_timer[3]; /* Virtual-time timers. */ 276 277 int p_traceflag; /* Kernel trace points. */ 278 struct ktrace_node *p_tracenode; /* Trace to vnode. */ 279 280 sigset_t p_siglist; /* Signals arrived but not delivered. */ 281 282 struct vnode *p_textvp; /* Vnode of executable. */ 283 struct nchandle p_textnch; /* namecache handle of executable. */ 284 285 unsigned int p_stops; /* procfs event bitmask */ 286 unsigned int p_stype; /* procfs stop event type */ 287 char p_step; /* procfs stop *once* flag */ 288 unsigned char p_pfsflags; /* procfs flags */ 289 char p_pad2[2]; 290 struct sigiolst p_sigiolst; /* list of sigio sources */ 291 int p_sigparent; /* signal to parent on exit */ 292 struct klist p_klist; /* knotes attached to this process */ 293 294 struct timeval p_start; /* start time for a process */ 295 296 struct rusage p_ru; /* stats for this proc */ 297 struct rusage p_cru; /* sum of stats for reaped children */ 298 void *p_dsched_priv1; 299 300 /* The following fields are all copied upon creation in fork. */ 301 #define p_startcopy p_comm 302 303 char p_comm[MAXCOMLEN+1]; /* typ 16+1 bytes */ 304 char p_pad3; 305 char p_nice; /* Process "nice" value. */ 306 char p_pad4; 307 int p_osrel; /* release date for binary ELF note */ 308 309 struct pgrp *p_pgrp; /* Pointer to process group. */ 310 311 struct sysentvec *p_sysent; /* System call dispatch information. */ 312 313 struct uprof p_prof; /* Profiling arguments. */ 314 struct rtprio p_rtprio; /* Realtime priority. */ 315 struct pargs *p_args; 316 u_short p_xstat; /* Exit status or last stop signal */ 317 318 int p_ionice; 319 void *p_dsched_priv2; 320 /* End area that is copied on creation. */ 321 #define p_endcopy p_dsched_priv2 322 u_short p_acflag; /* Accounting flags. */ 323 324 int p_lock; /* Prevent proc destruction */ 325 int p_nthreads; /* Number of threads in this process. */ 326 int p_nstopped; /* Number of stopped threads. */ 327 int p_lasttid; /* Last tid used. */ 328 struct lwp_rb_tree p_lwp_tree; /* RB tree of LWPs for this process */ 329 void *p_aioinfo; /* ASYNC I/O info */ 330 int p_wakeup; /* thread id XXX lwp */ 331 struct proc *p_peers; /* XXX lwp */ 332 struct proc *p_leader; /* XXX lwp */ 333 void *p_emuldata; /* process-specific emulator state */ 334 struct usched *p_usched; /* Userland scheduling control */ 335 struct vkernel_proc *p_vkernel; /* VKernel support, proc part */ 336 int p_numposixlocks; /* number of POSIX locks */ 337 void (*p_userret)(void);/* p: return-to-user hook */ 338 339 struct spinlock p_spin; /* Spinlock for LWP access to proc */ 340 struct lwkt_token p_token; /* Token for LWP access to proc */ 341 struct sem_undo *p_sem_undo; /* Fast semaphore tracking lookup */ 342 void *p_drv_priv; /* scp linkage (for syscons) */ 343 void *p_vmm; 344 cpulock_t p_vmm_cpulock; /* count cpus in and kickout lock */ 345 cpumask_t p_vmm_cpumask; /* cpus entering or in vmm */ 346 struct sys_upmap *p_upmap; /* user RO mappable per-process page */ 347 forkid_t p_forkid; /* unique forkid */ 348 struct sysreaper *p_reaper; /* reaper control */ 349 void *p_reserveds[3]; /* reserved for future */ 350 }; 351 352 #define lwp_wchan lwp_thread->td_wchan 353 #define lwp_wmesg lwp_thread->td_wmesg 354 #define p_session p_pgrp->pg_session 355 #define p_pgid p_pgrp->pg_id 356 357 /* These flags are kept in p_flags. */ 358 #define P_ADVLOCK 0x00001 /* Process may hold a POSIX advisory lock */ 359 #define P_CONTROLT 0x00002 /* Has a controlling terminal */ 360 #define P_SWAPPEDOUT 0x00004 /* Swapped out of memory */ 361 #define P_SYSVSEM 0x00008 /* Might have SysV semaphores */ 362 #define P_PPWAIT 0x00010 /* Parent is waiting for child to exec/exit */ 363 #define P_PROFIL 0x00020 /* Has started profiling */ 364 #define P_POSTEXIT 0x00040 /* Prevent procfs from stepping after this pt */ 365 #define P_SCMOUSE 0x00080 /* Process is held by syscons ioctl */ 366 /* was: Sleep is interruptible */ 367 #define P_SUGID 0x00100 /* Had set id privileges since last exec */ 368 #define P_SYSTEM 0x00200 /* System proc: no sigs, stats or swapping */ 369 #define P_MAYBETHREADED 0x00400 /* might be threaded optimization */ 370 #define P_TRACED 0x00800 /* Debugged process being traced */ 371 #define P_WAITED 0x01000 /* SIGSTOP status was returned by wait3/4 */ 372 #define P_WEXIT 0x02000 /* Working on exiting (master exit) */ 373 #define P_EXEC 0x04000 /* Process called exec */ 374 #define P_CONTINUED 0x08000 /* Proc has continued from a stopped state */ 375 376 #define P_UNUSED16 0x00010000 377 #define P_UNUSED17 0x00020000 378 379 #define P_SWAPWAIT 0x00040000 /* Waiting for a swapin */ 380 #define P_UNUSED19 0x00080000 /* was: Now in a zombied state */ 381 382 /* Marked a kernel thread */ 383 #define P_UNUSED20 0x00100000 /* was: on a user scheduling run queue */ 384 #define P_UNUSED21 0x00200000 /* was: Process is really a kernel thread */ 385 #define P_IDLESWAP 0x00400000 /* Swapout was due to idleswap, not load */ 386 387 #define P_JAILED 0x01000000 /* Process is in jail */ 388 #define P_SIGVTALRM 0x02000000 /* signal SIGVTALRM pending due to itimer */ 389 #define P_SIGPROF 0x04000000 /* signal SIGPROF pending due to itimer */ 390 #define P_INEXEC 0x08000000 /* Process is in execve(). */ 391 #define P_UNUSED28 0x10000000 392 #define P_UNUSED29 0x20000000 393 #define P_XCPU 0x40000000 /* SIGXCPU */ 394 395 #define LWP_ALTSTACK 0x0000001 /* have alternate signal stack */ 396 #define LWP_OLDMASK 0x0000002 /* need to restore mask before pause */ 397 #define LWP_SINTR 0x0000008 /* Sleep is interruptible. */ 398 #define LWP_SELECT 0x0000010 /* Selecting; wakeup/waiting danger. */ 399 #define LWP_UNUSED20 0x0000020 400 #define LWP_UNUSED40 0x0000040 401 #define LWP_UNUSED80 0x0000080 402 #define LWP_PASSIVE_ACQ 0x0000100 /* Passive acquire cpu (see kern_switch) */ 403 #define LWP_PAGING 0x0000200 /* Currently in vm_fault */ 404 405 /* 406 * LWP_MP_WSTOP: When set the thread will stop prior to return to userland 407 * and has been counted in the process stop-threads-count, but 408 * may still be running in kernel-land. 409 * 410 * LWP_MP_WEXIT: When set the thread has been asked to exit and will not return 411 * to userland. p_nthreads will not be decremented until the 412 * thread has actually exited. 413 */ 414 #define LWP_MP_ONRUNQ 0x0000001 /* on a user scheduling run queue */ 415 #define LWP_MP_WEXIT 0x0000002 /* working on exiting (lwpuserret()) */ 416 #define LWP_MP_WSTOP 0x0000004 /* working on stopping */ 417 #define LWP_MP_ULOAD 0x0000008 /* uload accounting for current cpu */ 418 #define LWP_MP_RRFORCE 0x0000010 /* forced resched due to rrcount */ 419 #define LWP_MP_VNLRU 0x0000020 /* check excessive vnode allocations (lwpuserret()) */ 420 421 #define LWP_MP_URETMASK (LWP_MP_WEXIT | LWP_MP_VNLRU) 422 423 #define FIRST_LWP_IN_PROC(p) RB_FIRST(lwp_rb_tree, &(p)->p_lwp_tree) 424 #define FOREACH_LWP_IN_PROC(lp, p) \ 425 RB_FOREACH(lp, lwp_rb_tree, &(p)->p_lwp_tree) 426 #define ONLY_LWP_IN_PROC(p) _only_lwp_in_proc(p, __func__) 427 428 #ifdef _KERNEL 429 static inline struct lwp * 430 _only_lwp_in_proc(struct proc *p, const char *caller) 431 { 432 if (p->p_nthreads != 1) { 433 panic("%s: proc %p (pid %d cmd %s) has more than one thread", 434 caller, p, p->p_pid, p->p_comm); 435 } 436 return RB_ROOT(&p->p_lwp_tree); 437 } 438 #endif 439 440 /* 441 * We use process IDs <= PID_MAX. NO_PID must also fit in a pid_t and 442 * is used to represent "no process group". 443 */ 444 #define PID_MAX 999999 445 #define NO_PID 0x7FFFFFFF 446 447 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 448 449 #ifdef _KERNEL 450 451 #ifdef MALLOC_DECLARE 452 MALLOC_DECLARE(M_SESSION); 453 MALLOC_DECLARE(M_PROC); 454 MALLOC_DECLARE(M_LWP); 455 MALLOC_DECLARE(M_SUBPROC); 456 MALLOC_DECLARE(M_PARGS); 457 #endif 458 459 /* for priv_check_cred() */ 460 #define NULL_CRED_OKAY 0x2 461 462 /* Handy macro to determine if p1 can mangle p2 */ 463 464 #define PRISON_CHECK(cr1, cr2) \ 465 ((!(cr1)->cr_prison) || (cr1)->cr_prison == (cr2)->cr_prison) 466 467 /* 468 * STOPEVENT 469 */ 470 extern void stopevent(struct proc*, unsigned int, unsigned int); 471 #define STOPEVENT(p,e,v) \ 472 do { \ 473 if ((p)->p_stops & (e)) { \ 474 stopevent(p,e,v); \ 475 } \ 476 } while (0) 477 478 /* 479 * Hold process in memory, don't destruct, used by ktrace, procfs, sigio, 480 * and signaling code (e.g. ksignal()). 481 * 482 * MPSAFE 483 */ 484 #define PHOLD(p) phold((p)) 485 #define PRELE(p) prele((p)) 486 #define PHOLDZOMB(p) pholdzomb((p)) 487 #define PRELEZOMB(p) prelezomb((p)) 488 #define PSTALL(p, msg, n) \ 489 do { if ((p)->p_lock > (n)) pstall((p), (msg), (n)); } while (0) 490 491 /* 492 * Hold lwp in memory, don't destruct, normally for ptrace/procfs work 493 * atomic ops because they can occur from an IPI. 494 * MPSAFE 495 */ 496 #define LWPHOLD(lp) atomic_add_int(&(lp)->lwp_lock, 1) 497 #define LWPRELE(lp) atomic_add_int(&(lp)->lwp_lock, -1) 498 499 extern struct proc proc0; /* Process slot for swapper. */ 500 extern struct lwp lwp0; /* LWP slot for swapper. */ 501 extern struct thread thread0; /* Thread slot for swapper. */ 502 extern int nprocs, maxproc; /* Current and max number of procs. */ 503 extern int maxprocperuid; /* Max procs per uid. */ 504 extern int sched_quantum; /* Scheduling quantum in ticks */ 505 506 extern struct proc *initproc; /* Process slot for init */ 507 extern struct thread *pagethread, *updatethread; 508 509 /* 510 * Scheduler independant variables. The primary scheduler polling frequency, 511 * the maximum ESTCPU value, and the weighting factor for nice values. A 512 * cpu bound program's estcpu will increase to ESTCPUMAX - 1. 513 */ 514 #define ESTCPUFREQ 50 515 516 extern u_long ps_arg_cache_limit; 517 extern int ps_argsopen; 518 extern int ps_showallprocs; 519 520 struct proc *pfind (pid_t); /* Find process by id w/ref */ 521 struct proc *pfindn (pid_t); /* Find process by id wo/ref */ 522 struct pgrp *pgfind (pid_t); /* Find process group by id w/ref */ 523 struct proc *zpfind (pid_t); /* Find zombie process by id w/ref */ 524 void pgref (struct pgrp *); /* Ref pgrp preventing disposal */ 525 void pgrel (struct pgrp *); /* Deref pgrp & dispose on 1->0 trans */ 526 527 struct globaldata; 528 struct lwp_params; 529 530 int enterpgrp (struct proc *p, pid_t pgid, int mksess); 531 void proc_add_allproc(struct proc *p); 532 void proc_move_allproc_zombie(struct proc *); 533 void proc_remove_zombie(struct proc *); 534 void allproc_scan(int (*callback)(struct proc *, void *), void *data); 535 void alllwp_scan(int (*callback)(struct lwp *, void *), void *data); 536 void zombproc_scan(int (*callback)(struct proc *, void *), void *data); 537 void fixjobc (struct proc *p, struct pgrp *pgrp, int entering); 538 void updatepcpu(struct lwp *, int, int); 539 int inferior (struct proc *p); 540 int leavepgrp (struct proc *p); 541 void sess_hold(struct session *sp); 542 void sess_rele(struct session *sp); 543 void procinit (void); 544 void procinsertinit(struct proc *p); 545 void sessinsertinit(struct session *sess); 546 void pgrpinsertinit(struct pgrp *pg); 547 void relscurproc(struct proc *curp); 548 int p_trespass (struct ucred *cr1, struct ucred *cr2); 549 void setrunnable (struct lwp *); 550 void proc_stop (struct proc *, int); 551 void proc_unstop (struct proc *, int); 552 void sleep_gdinit (struct globaldata *); 553 thread_t cpu_heavy_switch (struct thread *); 554 thread_t cpu_lwkt_switch (struct thread *); 555 556 void cpu_lwp_exit (void) __dead2; 557 void cpu_thread_exit (void) __dead2; 558 void lwp_exit (int masterexit, void *waddr) __dead2; 559 void lwp_dispose (struct lwp *); 560 int killalllwps (int); 561 void exit1 (int) __dead2; 562 void cpu_fork (struct lwp *, struct lwp *, int); 563 int cpu_prepare_lwp(struct lwp *, struct lwp_params *); 564 void cpu_set_fork_handler (struct lwp *, void (*)(void *, struct trapframe *), void *); 565 void cpu_set_thread_handler(struct thread *td, void (*retfunc)(void), void *func, void *arg); 566 int fork1 (struct lwp *, int, struct proc **); 567 void start_forked_proc (struct lwp *, struct proc *); 568 int trace_req (struct proc *); 569 void cpu_thread_wait (struct thread *); 570 void setsugid (void); 571 void faultin (struct proc *p); 572 void swapin_request (void); 573 void phold (struct proc *); 574 void prele (struct proc *); 575 int pholdzomb (struct proc *); 576 void prelezomb (struct proc *); 577 void pstall (struct proc *, const char *, int); 578 void lwpuserret(struct lwp *); 579 void lwpkthreaddeferred(void); 580 void proc_usermap(struct proc *p, int invfork); 581 void proc_userunmap(struct proc *p); 582 void reaper_hold(struct sysreaper *reap); 583 void reaper_drop(struct sysreaper *reap); 584 struct sysreaper *reaper_exit(struct proc *p); 585 void reaper_init(struct proc *p, struct sysreaper *reap); 586 struct proc *reaper_get(struct sysreaper *reap); 587 588 u_int32_t procrunnable (void); 589 590 #endif /* _KERNEL */ 591 592 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 593 #endif /* !_SYS_PROC_H_ */ 594