proc.h revision 1.310
1/* $NetBSD: proc.h,v 1.310 2011/09/02 20:10:19 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32/*- 33 * Copyright (c) 1986, 1989, 1991, 1993 34 * The Regents of the University of California. All rights reserved. 35 * (c) UNIX System Laboratories, Inc. 36 * All or some portions of this file are derived from material licensed 37 * to the University of California by American Telephone and Telegraph 38 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 39 * the permission of UNIX System Laboratories, Inc. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)proc.h 8.15 (Berkeley) 5/19/95 66 */ 67 68#ifndef _SYS_PROC_H_ 69#define _SYS_PROC_H_ 70 71#if defined(_KERNEL_OPT) 72#include "opt_multiprocessor.h" 73#include "opt_kstack.h" 74#include "opt_lockdebug.h" 75#endif 76 77#include <machine/proc.h> /* Machine-dependent proc substruct */ 78#include <sys/aio.h> 79#include <sys/rwlock.h> 80#include <sys/mqueue.h> 81#include <sys/mutex.h> 82#include <sys/condvar.h> 83#include <sys/lwp.h> 84#include <sys/queue.h> 85#include <sys/signalvar.h> 86#include <sys/siginfo.h> 87#include <sys/event.h> 88#include <sys/specificdata.h> 89 90#ifndef _KERNEL 91#include <sys/time.h> 92#include <sys/resource.h> 93#endif 94 95/* 96 * One structure allocated per session. 97 */ 98struct session { 99 int s_count; /* Ref cnt; pgrps in session */ 100 u_int s_flags; 101#define S_LOGIN_SET 1 /* s_login set in this session */ 102 struct proc *s_leader; /* Session leader */ 103 struct vnode *s_ttyvp; /* Vnode of controlling terminal */ 104 struct tty *s_ttyp; /* Controlling terminal */ 105 char s_login[MAXLOGNAME]; /* Setlogin() name */ 106 pid_t s_sid; /* Session ID (pid of leader) */ 107}; 108 109/* 110 * One structure allocated per process group. 111 */ 112struct pgrp { 113 LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */ 114 struct session *pg_session; /* Pointer to session */ 115 pid_t pg_id; /* Pgrp id */ 116 int pg_jobc; /* 117 * Number of processes qualifying 118 * pgrp for job control 119 */ 120}; 121 122/* 123 * One structure allocated per emulation. 124 */ 125struct exec_package; 126struct ras; 127struct kauth_cred; 128 129struct emul { 130 const char *e_name; /* Symbolic name */ 131 const char *e_path; /* Extra emulation path (NULL if none)*/ 132#ifndef __HAVE_MINIMAL_EMUL 133 int e_flags; /* Miscellaneous flags, see above */ 134 /* Syscall handling function */ 135 const int *e_errno; /* Errno array */ 136 int e_nosys; /* Offset of the nosys() syscall */ 137 int e_nsysent; /* Number of system call entries */ 138#endif 139 struct sysent *e_sysent; /* System call array */ 140 const char * const *e_syscallnames; /* System call name array */ 141 /* Signal sending function */ 142 void (*e_sendsig)(const struct ksiginfo *, 143 const sigset_t *); 144 void (*e_trapsignal)(struct lwp *, struct ksiginfo *); 145 int (*e_tracesig)(struct proc *, int); 146 char *e_sigcode; /* Start of sigcode */ 147 char *e_esigcode; /* End of sigcode */ 148 /* Set registers before execution */ 149 struct uvm_object **e_sigobject;/* shared sigcode object */ 150 void (*e_setregs)(struct lwp *, struct exec_package *, 151 vaddr_t); 152 153 /* Per-process hooks */ 154 void (*e_proc_exec)(struct proc *, struct exec_package *); 155 void (*e_proc_fork)(struct proc *, struct lwp *, int); 156 void (*e_proc_exit)(struct proc *); 157 void (*e_lwp_fork)(struct lwp *, struct lwp *); 158 void (*e_lwp_exit)(struct lwp *); 159 160#ifdef __HAVE_SYSCALL_INTERN 161 void (*e_syscall_intern)(struct proc *); 162#else 163 void (*e_syscall)(void); 164#endif 165 /* Emulation specific sysctl data */ 166 struct sysctlnode *e_sysctlovly; 167 int (*e_fault)(struct proc *, vaddr_t, int); 168 169 vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t); 170 171 /* Emulation-specific hook for userspace page faults */ 172 int (*e_usertrap)(struct lwp *, vaddr_t, void *); 173 174 /* SA-related information */ 175 const struct sa_emul *e_sa; 176 177 size_t e_ucsize; /* size of ucontext_t */ 178 void (*e_startlwp)(void *); 179}; 180 181/* 182 * Emulation miscelaneous flags 183 */ 184#define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */ 185 186/* 187 * Description of a process. 188 * 189 * This structure contains the information needed to manage a thread of 190 * control, known in UN*X as a process; it has references to substructures 191 * containing descriptions of things that the process uses, but may share 192 * with related processes. The process structure and the substructures 193 * are always addressible except for those marked "(PROC ONLY)" below, 194 * which might be addressible only on a processor on which the process 195 * is running. 196 * 197 * Field markings and the corresponding locks: 198 * 199 * a: p_auxlock 200 * k: ktrace_mutex 201 * l: proc_lock 202 * t: p_stmutex 203 * p: p_lock 204 * (: updated atomically 205 * :: unlocked, stable 206 */ 207struct vmspace; 208 209struct proc { 210 LIST_ENTRY(proc) p_list; /* l: List of all processes */ 211 212 kmutex_t p_auxlock; /* :: secondary, longer term lock */ 213 kmutex_t *p_lock; /* :: general mutex */ 214 kmutex_t p_stmutex; /* :: mutex on profiling state */ 215 krwlock_t p_reflock; /* p: lock for debugger, procfs */ 216 kcondvar_t p_waitcv; /* p: wait, stop CV on children */ 217 kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */ 218 219 /* Substructures: */ 220 struct kauth_cred *p_cred; /* p: Master copy of credentials */ 221 struct filedesc *p_fd; /* :: Ptr to open files structure */ 222 struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */ 223 struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */ 224 struct plimit *p_limit; /* :: Process limits */ 225 struct vmspace *p_vmspace; /* :: Address space */ 226 struct sigacts *p_sigacts; /* :: Process sigactions */ 227 struct aioproc *p_aio; /* p: Asynchronous I/O data */ 228 u_int p_mqueue_cnt; /* (: Count of open message queues */ 229 specificdata_reference 230 p_specdataref; /* subsystem proc-specific data */ 231 232 int p_exitsig; /* l: signal to send to parent on exit */ 233 int p_flag; /* p: PK_* flags */ 234 int p_sflag; /* p: PS_* flags */ 235 int p_slflag; /* s, l: PSL_* flags */ 236 int p_lflag; /* l: PL_* flags */ 237 int p_stflag; /* t: PST_* flags */ 238 char p_stat; /* p: S* process status. */ 239 char p_trace_enabled;/* p: cached by syscall_intern() */ 240 char p_pad1[2]; /* unused */ 241 242 pid_t p_pid; /* :: Process identifier. */ 243 LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */ 244 struct proc *p_pptr; /* l: Pointer to parent process. */ 245 LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */ 246 LIST_HEAD(, proc) p_children; /* l: List of children. */ 247 LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */ 248 struct ras *p_raslist; /* a: List of RAS entries */ 249 250/* The following fields are all zeroed upon creation in fork. */ 251#define p_startzero p_nlwps 252 253 int p_nlwps; /* p: Number of LWPs */ 254 int p_nzlwps; /* p: Number of zombie LWPs */ 255 int p_nrlwps; /* p: Number running/sleeping LWPs */ 256 int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */ 257 int p_ndlwps; /* p: Number of detached LWPs */ 258 int p_nlwpid; /* p: Next LWP ID */ 259 u_int p_nstopchild; /* l: Count of stopped/dead children */ 260 u_int p_waited; /* l: parent has waited on child */ 261 struct lwp *p_zomblwp; /* p: detached LWP to be reaped */ 262 263 struct sadata *p_sa; /* p: Scheduler activation info */ 264 265 /* scheduling */ 266 void *p_sched_info; /* p: Scheduler-specific structure */ 267 fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */ 268 fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */ 269 unsigned int p_forktime; 270 fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */ 271 272 struct proc *p_opptr; /* l: save parent during ptrace. */ 273 struct ptimers *p_timers; /* Timers: real, virtual, profiling */ 274 struct bintime p_rtime; /* p: real time */ 275 u_quad_t p_uticks; /* t: Statclock hits in user mode */ 276 u_quad_t p_sticks; /* t: Statclock hits in system mode */ 277 u_quad_t p_iticks; /* t: Statclock hits processing intr */ 278 279 int p_traceflag; /* k: Kernel trace points */ 280 int p_timerpend; /* p: Pending itimer to run */ 281 void *p_tracep; /* k: Trace private data */ 282 struct vnode *p_textvp; /* :: Vnode of executable */ 283 284 struct emul *p_emul; /* :: emulation information */ 285 void *p_emuldata; /* :: per-proc emul data, or NULL */ 286 const struct execsw *p_execsw; /* :: exec package information */ 287 struct klist p_klist; /* p: knotes attached to proc */ 288 289 LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */ 290 sigpend_t p_sigpend; /* p: pending signals */ 291 struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */ 292 pid_t p_ppid; /* :: cached parent pid */ 293 pid_t p_fpid; /* :: forked pid */ 294 295/* 296 * End area that is zeroed on creation 297 */ 298#define p_endzero p_startcopy 299 300/* 301 * The following fields are all copied upon creation in fork. 302 */ 303#define p_startcopy p_sigctx 304 305 struct sigctx p_sigctx; /* p: Shared signal state */ 306 307 u_char p_nice; /* p: Process "nice" value */ 308 char p_comm[MAXCOMLEN+1]; 309 /* p: basename of last exec file */ 310 struct pgrp *p_pgrp; /* l: Pointer to process group */ 311 312 vaddr_t p_psstrp; /* :: address of process's ps_strings */ 313 u_int p_pax; /* :: PAX flags */ 314 315/* 316 * End area that is copied on creation 317 */ 318#define p_endcopy p_xstat 319 320 u_short p_xstat; /* p: Exit status for wait; also stop signal */ 321 u_short p_acflag; /* p: Acc. flags; see struct lwp also */ 322 struct mdproc p_md; /* p: Any machine-dependent fields */ 323 vaddr_t p_stackbase; /* :: ASLR randomized stack base */ 324 struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ 325}; 326 327#define p_rlimit p_limit->pl_rlimit 328#define p_session p_pgrp->pg_session 329#define p_pgid p_pgrp->pg_id 330 331/* 332 * Status values. 333 */ 334#define SIDL 1 /* Process being created by fork */ 335#define SACTIVE 2 /* Process is not stopped */ 336#define SDYING 3 /* About to die */ 337#define SSTOP 4 /* Process debugging or suspension */ 338#define SZOMB 5 /* Awaiting collection by parent */ 339#define SDEAD 6 /* Almost a zombie */ 340 341#define P_ZOMBIE(p) \ 342 ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD) 343 344/* 345 * These flags are kept in p_flag and are protected by p_lock. Access from 346 * process context only. 347 */ 348#define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */ 349#define PK_SYSTEM 0x00000002 /* System process (kthread) */ 350#define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */ 351#define PK_SUGID 0x00000100 /* Had set id privileges since last exec */ 352#define PK_EXEC 0x00004000 /* Process called exec */ 353#define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */ 354#define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */ 355#define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */ 356#define PK_MARKER 0x80000000 /* Is a dummy marker process */ 357 358/* 359 * These flags are kept in p_sflag and are protected by p_lock. Access from 360 * process context only. 361 */ 362#define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ 363#define PS_SA 0x00000400 /* Process using scheduler activations */ 364#define PS_WCORE 0x00001000 /* Process needs to dump core */ 365#define PS_WEXIT 0x00002000 /* Working on exiting */ 366#define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */ 367#define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */ 368#define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */ 369#define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */ 370#define PS_NOSA 0x40000000 /* Do not enable SA */ 371#define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */ 372#define PS_RUMP_LWPEXIT PS_SA /* LWPs in rump kernel should exit for g/c */ 373 374/* 375 * These flags are kept in p_sflag and are protected by the proc_lock 376 * and p_lock. Access from process context only. 377 */ 378#define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */ 379#define PSL_TRACED 0x00000800 /* Debugged process being traced */ 380#define PSL_FSTRACE 0x00010000 /* Debugger process being traced by procfs */ 381#define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */ 382#define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */ 383#define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */ 384 385/* 386 * Kept in p_stflag and protected by p_stmutex. 387 */ 388#define PST_PROFIL 0x00000020 /* Has started profiling */ 389 390/* 391 * The final set are protected by the proc_lock. Access 392 * from process context only. 393 */ 394#define PL_CONTROLT 0x00000002 /* Has a controlling terminal */ 395#define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */ 396#define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */ 397#define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */ 398 399/* 400 * Macro to compute the exit signal to be delivered. 401 */ 402#define P_EXITSIG(p) \ 403 (((p)->p_slflag & (PSL_TRACED|PSL_FSTRACE)) ? SIGCHLD : p->p_exitsig) 404 405LIST_HEAD(proclist, proc); /* A list of processes */ 406 407/* 408 * This structure associates a proclist with its lock. 409 */ 410struct proclist_desc { 411 struct proclist *pd_list; /* The list */ 412 /* 413 * XXX Add a pointer to the proclist's lock eventually. 414 */ 415}; 416 417#ifdef _KERNEL 418 419/* 420 * We use process IDs <= PID_MAX until there are > 16k processes. 421 * NO_PGID is used to represent "no process group" for a tty. 422 */ 423#define PID_MAX 30000 424#define NO_PGID ((pid_t)-1) 425 426#define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 427 428/* 429 * Flags passed to fork1(). 430 */ 431#define FORK_PPWAIT 0x0001 /* Block parent until child exit */ 432#define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ 433#define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ 434#define FORK_SHAREFILES 0x0008 /* Share file descriptors */ 435#define FORK_SHARESIGS 0x0010 /* Share signal actions */ 436#define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ 437#define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ 438#define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ 439 440extern struct proc proc0; /* Process slot for swapper */ 441extern u_int nprocs; /* Current number of procs */ 442extern int maxproc; /* Max number of procs */ 443#define vmspace_kernel() (proc0.p_vmspace) 444 445extern kmutex_t *proc_lock; 446extern struct proclist allproc; /* List of all processes */ 447extern struct proclist zombproc; /* List of zombie processes */ 448 449extern struct proc *initproc; /* Process slots for init, pager */ 450 451extern const struct proclist_desc proclists[]; 452 453extern struct pool ptimer_pool; /* Memory pool for ptimers */ 454 455struct simplelock; 456 457proc_t * proc_find_raw(pid_t); 458proc_t * proc_find(pid_t); /* Find process by ID */ 459struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ 460 461void procinit(void); 462void procinit_sysctl(void); 463int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); 464void proc_leavepgrp(struct proc *); 465void proc_sesshold(struct session *); 466void proc_sessrele(struct session *); 467void fixjobc(struct proc *, struct pgrp *, int); 468 469int ltsleep(wchan_t, pri_t, const char *, int, volatile struct simplelock *); 470int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); 471void wakeup(wchan_t); 472void wakeup_one(wchan_t); 473int kpause(const char *, bool, int, kmutex_t *); 474void exit1(struct lwp *, int) __dead; 475int do_sys_wait(int *, int *, int, struct rusage *); 476struct proc *proc_alloc(void); 477void proc0_init(void); 478pid_t proc_alloc_pid(struct proc *); 479void proc_free_pid(pid_t); 480void proc_free_mem(struct proc *); 481void exit_lwps(struct lwp *l); 482int fork1(struct lwp *, int, int, void *, size_t, 483 void (*)(void *), void *, register_t *, struct proc **); 484int pgid_in_session(struct proc *, pid_t); 485void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, 486 void (*)(void *), void *); 487void cpu_lwp_free(struct lwp *, int); 488void cpu_lwp_free2(struct lwp *); 489 490#ifdef __HAVE_SYSCALL_INTERN 491void syscall_intern(struct proc *); 492#endif 493 494void child_return(void *); 495 496int proc_isunder(struct proc *, struct lwp *); 497void proc_stop(struct proc *, int, int); 498int proc_uidmatch(kauth_cred_t, kauth_cred_t); 499 500int proc_vmspace_getref(struct proc *, struct vmspace **); 501void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); 502void proc_crmod_enter(void); 503 504int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t); 505void proc_specific_key_delete(specificdata_key_t); 506void proc_initspecific(struct proc *); 507void proc_finispecific(struct proc *); 508void * proc_getspecific(struct proc *, specificdata_key_t); 509void proc_setspecific(struct proc *, specificdata_key_t, void *); 510 511int proclist_foreach_call(struct proclist *, 512 int (*)(struct proc *, void *arg), void *); 513 514static inline struct proc * 515_proclist_skipmarker(struct proc *p0) 516{ 517 struct proc *p = p0; 518 519 while (p != NULL && p->p_flag & PK_MARKER) 520 p = LIST_NEXT(p, p_list); 521 522 return p; 523} 524 525/* 526 * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones. 527 */ 528#define PROCLIST_FOREACH(var, head) \ 529 for ((var) = LIST_FIRST(head); \ 530 ((var) = _proclist_skipmarker(var)) != NULL; \ 531 (var) = LIST_NEXT(var, p_list)) 532 533/* Compatibility with old, non-interlocked tsleep call */ 534#define tsleep(chan, pri, wmesg, timo) \ 535 ltsleep(chan, pri, wmesg, timo, NULL) 536 537#ifdef KSTACK_CHECK_MAGIC 538void kstack_setup_magic(const struct lwp *); 539void kstack_check_magic(const struct lwp *); 540#else 541#define kstack_setup_magic(x) 542#define kstack_check_magic(x) 543#endif 544 545extern struct emul emul_netbsd; 546 547#endif /* _KERNEL */ 548 549#if defined(_KMEMUSER) || defined(_KERNEL) 550 551/* 552 * Kernel stack parameters. 553 * 554 * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack, 555 * excluding red-zone. 556 * 557 * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone. 558 * 559 * if <machine/proc.h> provides the MD definition, it will be used. 560 */ 561#ifndef KSTACK_LOWEST_ADDR 562#define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) 563#endif 564#ifndef KSTACK_SIZE 565#define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) 566#endif 567 568#endif /* _KMEMUSER || _KERNEL */ 569 570#endif /* !_SYS_PROC_H_ */ 571