1 /* $NetBSD: proc.h,v 1.323 2015/09/24 14:33:31 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 #include <sys/lwp.h> 72 73 #if defined(_KMEMUSER) || defined(_KERNEL) 74 75 #if defined(_KERNEL_OPT) 76 #include "opt_multiprocessor.h" 77 #include "opt_kstack.h" 78 #include "opt_lockdebug.h" 79 #endif 80 81 #include <machine/proc.h> /* Machine-dependent proc substruct */ 82 #include <machine/pcb.h> 83 #include <sys/aio.h> 84 #include <sys/rwlock.h> 85 #include <sys/mqueue.h> 86 #include <sys/mutex.h> 87 #include <sys/condvar.h> 88 #include <sys/queue.h> 89 #include <sys/signalvar.h> 90 #include <sys/siginfo.h> 91 #include <sys/event.h> 92 #include <sys/specificdata.h> 93 94 #ifndef _KERNEL 95 #include <sys/time.h> 96 #include <sys/resource.h> 97 #endif 98 99 /* 100 * One structure allocated per session. 101 */ 102 struct session { 103 int s_count; /* Ref cnt; pgrps in session */ 104 u_int s_flags; 105 #define S_LOGIN_SET 1 /* s_login set in this session */ 106 struct proc *s_leader; /* Session leader */ 107 struct vnode *s_ttyvp; /* Vnode of controlling terminal */ 108 struct tty *s_ttyp; /* Controlling terminal */ 109 char s_login[MAXLOGNAME]; /* Setlogin() name */ 110 pid_t s_sid; /* Session ID (pid of leader) */ 111 }; 112 113 /* 114 * One structure allocated per process group. 115 */ 116 struct pgrp { 117 LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */ 118 struct session *pg_session; /* Pointer to session */ 119 pid_t pg_id; /* Pgrp id */ 120 int pg_jobc; /* 121 * Number of processes qualifying 122 * pgrp for job control 123 */ 124 }; 125 126 /* 127 * One structure allocated per emulation. 128 */ 129 struct exec_package; 130 struct ras; 131 struct kauth_cred; 132 133 struct emul { 134 const char *e_name; /* Symbolic name */ 135 const char *e_path; /* Extra emulation path (NULL if none)*/ 136 #ifndef __HAVE_MINIMAL_EMUL 137 int e_flags; /* Miscellaneous flags, see above */ 138 /* Syscall handling function */ 139 const int *e_errno; /* Errno array */ 140 int e_nosys; /* Offset of the nosys() syscall */ 141 int e_nsysent; /* Number of system call entries */ 142 #endif 143 struct sysent *e_sysent; /* System call array */ 144 const char * const *e_syscallnames; /* System call name array */ 145 /* Signal sending function */ 146 void (*e_sendsig)(const struct ksiginfo *, 147 const sigset_t *); 148 void (*e_trapsignal)(struct lwp *, struct ksiginfo *); 149 int (*e_tracesig)(struct proc *, int); 150 char *e_sigcode; /* Start of sigcode */ 151 char *e_esigcode; /* End of sigcode */ 152 /* Set registers before execution */ 153 struct uvm_object **e_sigobject;/* shared sigcode object */ 154 void (*e_setregs)(struct lwp *, struct exec_package *, 155 vaddr_t); 156 157 /* Per-process hooks */ 158 void (*e_proc_exec)(struct proc *, struct exec_package *); 159 void (*e_proc_fork)(struct proc *, struct lwp *, int); 160 void (*e_proc_exit)(struct proc *); 161 void (*e_lwp_fork)(struct lwp *, struct lwp *); 162 void (*e_lwp_exit)(struct lwp *); 163 164 #ifdef __HAVE_SYSCALL_INTERN 165 void (*e_syscall_intern)(struct proc *); 166 #else 167 void (*e_syscall)(void); 168 #endif 169 /* Emulation specific sysctl data */ 170 struct sysctlnode *e_sysctlovly; 171 int (*e_fault)(struct proc *, vaddr_t, int); 172 173 vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t); 174 175 /* Emulation-specific hook for userspace page faults */ 176 int (*e_usertrap)(struct lwp *, vaddr_t, void *); 177 178 size_t e_ucsize; /* size of ucontext_t */ 179 void (*e_startlwp)(void *); 180 181 /* Dtrace syscall probe */ 182 void (*e_dtrace_syscall)(uint32_t, register_t, 183 const struct sysent *, const void *, 184 const register_t *, int); 185 }; 186 187 /* 188 * Emulation miscelaneous flags 189 */ 190 #define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */ 191 192 /* 193 * Description of a process. 194 * 195 * This structure contains the information needed to manage a thread of 196 * control, known in UN*X as a process; it has references to substructures 197 * containing descriptions of things that the process uses, but may share 198 * with related processes. The process structure and the substructures 199 * are always addressible except for those marked "(PROC ONLY)" below, 200 * which might be addressible only on a processor on which the process 201 * is running. 202 * 203 * Field markings and the corresponding locks: 204 * 205 * a: p_auxlock 206 * k: ktrace_mutex 207 * l: proc_lock 208 * t: p_stmutex 209 * p: p_lock 210 * (: updated atomically 211 * :: unlocked, stable 212 */ 213 struct vmspace; 214 215 struct proc { 216 LIST_ENTRY(proc) p_list; /* l: List of all processes */ 217 218 kmutex_t p_auxlock; /* :: secondary, longer term lock */ 219 kmutex_t *p_lock; /* :: general mutex */ 220 kmutex_t p_stmutex; /* :: mutex on profiling state */ 221 krwlock_t p_reflock; /* p: lock for debugger, procfs */ 222 kcondvar_t p_waitcv; /* p: wait, stop CV on children */ 223 kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */ 224 225 /* Substructures: */ 226 struct kauth_cred *p_cred; /* p: Master copy of credentials */ 227 struct filedesc *p_fd; /* :: Ptr to open files structure */ 228 struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */ 229 struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */ 230 struct plimit *p_limit; /* :: Process limits */ 231 struct vmspace *p_vmspace; /* :: Address space */ 232 struct sigacts *p_sigacts; /* :: Process sigactions */ 233 struct aioproc *p_aio; /* p: Asynchronous I/O data */ 234 u_int p_mqueue_cnt; /* (: Count of open message queues */ 235 specificdata_reference 236 p_specdataref; /* subsystem proc-specific data */ 237 238 int p_exitsig; /* l: signal to send to parent on exit */ 239 int p_flag; /* p: PK_* flags */ 240 int p_sflag; /* p: PS_* flags */ 241 int p_slflag; /* s, l: PSL_* flags */ 242 int p_lflag; /* l: PL_* flags */ 243 int p_stflag; /* t: PST_* flags */ 244 char p_stat; /* p: S* process status. */ 245 char p_trace_enabled;/* p: cached by syscall_intern() */ 246 char p_pad1[2]; /* unused */ 247 248 pid_t p_pid; /* :: Process identifier. */ 249 LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */ 250 struct proc *p_pptr; /* l: Pointer to parent process. */ 251 LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */ 252 LIST_HEAD(, proc) p_children; /* l: List of children. */ 253 LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */ 254 struct ras *p_raslist; /* a: List of RAS entries */ 255 256 /* The following fields are all zeroed upon creation in fork. */ 257 #define p_startzero p_nlwps 258 259 int p_nlwps; /* p: Number of LWPs */ 260 int p_nzlwps; /* p: Number of zombie LWPs */ 261 int p_nrlwps; /* p: Number running/sleeping LWPs */ 262 int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */ 263 int p_ndlwps; /* p: Number of detached LWPs */ 264 int p_nlwpid; /* p: Next LWP ID */ 265 u_int p_nstopchild; /* l: Count of stopped/dead children */ 266 u_int p_waited; /* l: parent has waited on child */ 267 struct lwp *p_zomblwp; /* p: detached LWP to be reaped */ 268 struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */ 269 270 /* scheduling */ 271 void *p_sched_info; /* p: Scheduler-specific structure */ 272 fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */ 273 fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */ 274 unsigned int p_forktime; 275 fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */ 276 277 struct proc *p_opptr; /* l: save parent during ptrace. */ 278 struct ptimers *p_timers; /* Timers: real, virtual, profiling */ 279 struct bintime p_rtime; /* p: real time */ 280 u_quad_t p_uticks; /* t: Statclock hits in user mode */ 281 u_quad_t p_sticks; /* t: Statclock hits in system mode */ 282 u_quad_t p_iticks; /* t: Statclock hits processing intr */ 283 284 int p_traceflag; /* k: Kernel trace points */ 285 void *p_tracep; /* k: Trace private data */ 286 struct vnode *p_textvp; /* :: Vnode of executable */ 287 288 struct emul *p_emul; /* :: emulation information */ 289 void *p_emuldata; /* :: per-proc emul data, or NULL */ 290 const struct execsw *p_execsw; /* :: exec package information */ 291 struct klist p_klist; /* p: knotes attached to proc */ 292 293 LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */ 294 sigpend_t p_sigpend; /* p: pending signals */ 295 struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */ 296 pid_t p_ppid; /* :: cached parent pid */ 297 pid_t p_fpid; /* :: forked pid */ 298 299 /* 300 * End area that is zeroed on creation 301 */ 302 #define p_endzero p_startcopy 303 304 /* 305 * The following fields are all copied upon creation in fork. 306 */ 307 #define p_startcopy p_sigctx 308 309 struct sigctx p_sigctx; /* p: Shared signal state */ 310 311 u_char p_nice; /* p: Process "nice" value */ 312 char p_comm[MAXCOMLEN+1]; 313 /* p: basename of last exec file */ 314 struct pgrp *p_pgrp; /* l: Pointer to process group */ 315 316 vaddr_t p_psstrp; /* :: address of process's ps_strings */ 317 u_int p_pax; /* :: PAX flags */ 318 319 /* 320 * End area that is copied on creation 321 */ 322 #define p_endcopy p_xstat 323 324 u_short p_xstat; /* p: Exit status for wait; also stop signal */ 325 u_short p_acflag; /* p: Acc. flags; see struct lwp also */ 326 struct mdproc p_md; /* p: Any machine-dependent fields */ 327 vaddr_t p_stackbase; /* :: ASLR randomized stack base */ 328 struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ 329 }; 330 331 #define p_rlimit p_limit->pl_rlimit 332 #define p_session p_pgrp->pg_session 333 #define p_pgid p_pgrp->pg_id 334 335 #endif /* _KMEMUSER || _KERNEL */ 336 337 /* 338 * Status values. 339 */ 340 #define SIDL 1 /* Process being created by fork */ 341 #define SACTIVE 2 /* Process is not stopped */ 342 #define SDYING 3 /* About to die */ 343 #define SSTOP 4 /* Process debugging or suspension */ 344 #define SZOMB 5 /* Awaiting collection by parent */ 345 #define SDEAD 6 /* Almost a zombie */ 346 347 #define P_ZOMBIE(p) \ 348 ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD) 349 350 /* 351 * These flags are kept in p_flag and are protected by p_lock. Access from 352 * process context only. 353 */ 354 #define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */ 355 #define PK_SYSTEM 0x00000002 /* System process (kthread) */ 356 #define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */ 357 #define PK_SUGID 0x00000100 /* Had set id privileges since last exec */ 358 #define PK_EXEC 0x00004000 /* Process called exec */ 359 #define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */ 360 #define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */ 361 #define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */ 362 #define PK_MARKER 0x80000000 /* Is a dummy marker process */ 363 364 /* 365 * These flags are kept in p_sflag and are protected by p_lock. Access from 366 * process context only. 367 */ 368 #define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ 369 #define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */ 370 #define PS_WCORE 0x00001000 /* Process needs to dump core */ 371 #define PS_WEXIT 0x00002000 /* Working on exiting */ 372 #define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */ 373 #define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */ 374 #define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */ 375 #define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */ 376 #define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */ 377 378 /* 379 * These flags are kept in p_sflag and are protected by the proc_lock 380 * and p_lock. Access from process context only. 381 */ 382 #define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */ 383 #define PSL_TRACED 0x00000800 /* Debugged process being traced */ 384 #define PSL_FSTRACE 0x00010000 /* Debugger process being traced by procfs */ 385 #define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */ 386 #define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */ 387 #define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */ 388 389 /* 390 * Kept in p_stflag and protected by p_stmutex. 391 */ 392 #define PST_PROFIL 0x00000020 /* Has started profiling */ 393 394 /* 395 * The final set are protected by the proc_lock. Access 396 * from process context only. 397 */ 398 #define PL_CONTROLT 0x00000002 /* Has a controlling terminal */ 399 #define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */ 400 #define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */ 401 #define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */ 402 403 #if defined(_KMEMUSER) || defined(_KERNEL) 404 405 /* 406 * Macro to compute the exit signal to be delivered. 407 */ 408 #define P_EXITSIG(p) \ 409 (((p)->p_slflag & (PSL_TRACED|PSL_FSTRACE)) ? SIGCHLD : p->p_exitsig) 410 411 LIST_HEAD(proclist, proc); /* A list of processes */ 412 413 /* 414 * This structure associates a proclist with its lock. 415 */ 416 struct proclist_desc { 417 struct proclist *pd_list; /* The list */ 418 /* 419 * XXX Add a pointer to the proclist's lock eventually. 420 */ 421 }; 422 423 #ifdef _KERNEL 424 425 /* 426 * We use process IDs <= PID_MAX until there are > 16k processes. 427 * NO_PGID is used to represent "no process group" for a tty. 428 */ 429 #define PID_MAX 30000 430 #define NO_PGID ((pid_t)-1) 431 432 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 433 434 /* 435 * Flags passed to fork1(). 436 */ 437 #define FORK_PPWAIT 0x0001 /* Block parent until child exit */ 438 #define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ 439 #define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ 440 #define FORK_SHAREFILES 0x0008 /* Share file descriptors */ 441 #define FORK_SHARESIGS 0x0010 /* Share signal actions */ 442 #define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ 443 #define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ 444 #define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ 445 446 extern struct proc proc0; /* Process slot for swapper */ 447 extern u_int nprocs; /* Current number of procs */ 448 extern int maxproc; /* Max number of procs */ 449 #define vmspace_kernel() (proc0.p_vmspace) 450 451 extern kmutex_t *proc_lock; 452 extern struct proclist allproc; /* List of all processes */ 453 extern struct proclist zombproc; /* List of zombie processes */ 454 455 extern struct proc *initproc; /* Process slots for init, pager */ 456 457 extern const struct proclist_desc proclists[]; 458 459 extern struct pool ptimer_pool; /* Memory pool for ptimers */ 460 461 int proc_find_locked(struct lwp *, struct proc **, pid_t); 462 proc_t * proc_find_raw(pid_t); 463 proc_t * proc_find(pid_t); /* Find process by ID */ 464 struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ 465 466 void procinit(void); 467 void procinit_sysctl(void); 468 int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); 469 void proc_leavepgrp(struct proc *); 470 void proc_sesshold(struct session *); 471 void proc_sessrele(struct session *); 472 void fixjobc(struct proc *, struct pgrp *, int); 473 474 int tsleep(wchan_t, pri_t, const char *, int); 475 int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); 476 void wakeup(wchan_t); 477 int kpause(const char *, bool, int, kmutex_t *); 478 void exit1(struct lwp *, int) __dead; 479 int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval); 480 int do_sys_wait(int *, int *, int, struct rusage *); 481 struct proc *proc_alloc(void); 482 void proc0_init(void); 483 pid_t proc_alloc_pid(struct proc *); 484 void proc_free_pid(pid_t); 485 void proc_free_mem(struct proc *); 486 void exit_lwps(struct lwp *l); 487 int fork1(struct lwp *, int, int, void *, size_t, 488 void (*)(void *), void *, register_t *, struct proc **); 489 int pgid_in_session(struct proc *, pid_t); 490 void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, 491 void (*)(void *), void *); 492 void cpu_lwp_free(struct lwp *, int); 493 void cpu_lwp_free2(struct lwp *); 494 void cpu_spawn_return(struct lwp*); 495 496 #ifdef __HAVE_SYSCALL_INTERN 497 void syscall_intern(struct proc *); 498 #endif 499 500 void child_return(void *); 501 502 int proc_isunder(struct proc *, struct lwp *); 503 void proc_stop(struct proc *, int, int); 504 int proc_uidmatch(kauth_cred_t, kauth_cred_t); 505 506 int proc_vmspace_getref(struct proc *, struct vmspace **); 507 void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); 508 void proc_crmod_enter(void); 509 510 int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t); 511 void proc_specific_key_delete(specificdata_key_t); 512 void proc_initspecific(struct proc *); 513 void proc_finispecific(struct proc *); 514 void * proc_getspecific(struct proc *, specificdata_key_t); 515 void proc_setspecific(struct proc *, specificdata_key_t, void *); 516 int proc_compare(const struct proc *, const struct lwp *, 517 const struct proc *, const struct lwp *); 518 519 int proclist_foreach_call(struct proclist *, 520 int (*)(struct proc *, void *arg), void *); 521 522 static inline struct proc * 523 _proclist_skipmarker(struct proc *p0) 524 { 525 struct proc *p = p0; 526 527 while (p != NULL && p->p_flag & PK_MARKER) 528 p = LIST_NEXT(p, p_list); 529 530 return p; 531 } 532 533 /* 534 * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones. 535 */ 536 #define PROCLIST_FOREACH(var, head) \ 537 for ((var) = LIST_FIRST(head); \ 538 ((var) = _proclist_skipmarker(var)) != NULL; \ 539 (var) = LIST_NEXT(var, p_list)) 540 541 #ifdef KSTACK_CHECK_MAGIC 542 void kstack_setup_magic(const struct lwp *); 543 void kstack_check_magic(const struct lwp *); 544 #else 545 #define kstack_setup_magic(x) 546 #define kstack_check_magic(x) 547 #endif 548 549 extern struct emul emul_netbsd; 550 551 #endif /* _KERNEL */ 552 553 /* 554 * Kernel stack parameters. 555 * 556 * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack, 557 * excluding red-zone. 558 * 559 * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone. 560 * 561 * if <machine/proc.h> provides the MD definition, it will be used. 562 */ 563 #ifndef KSTACK_LOWEST_ADDR 564 #define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) 565 #endif 566 #ifndef KSTACK_SIZE 567 #define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) 568 #endif 569 570 #endif /* _KMEMUSER || _KERNEL */ 571 572 #endif /* !_SYS_PROC_H_ */ 573