proc.h revision 1.342
1/* $NetBSD: proc.h,v 1.342 2017/08/28 00:46:07 kamil 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/idtype.h> 85#include <sys/rwlock.h> 86#include <sys/mqueue.h> 87#include <sys/mutex.h> 88#include <sys/condvar.h> 89#include <sys/queue.h> 90#include <sys/signalvar.h> 91#include <sys/siginfo.h> 92#include <sys/event.h> 93#include <sys/specificdata.h> 94 95#ifndef _KERNEL 96#include <sys/time.h> 97#include <sys/resource.h> 98#endif 99 100/* 101 * One structure allocated per session. 102 */ 103struct session { 104 int s_count; /* Ref cnt; pgrps in session */ 105 u_int s_flags; 106#define S_LOGIN_SET 1 /* s_login set in this session */ 107 struct proc *s_leader; /* Session leader */ 108 struct vnode *s_ttyvp; /* Vnode of controlling terminal */ 109 struct tty *s_ttyp; /* Controlling terminal */ 110 char s_login[MAXLOGNAME]; /* Setlogin() name */ 111 pid_t s_sid; /* Session ID (pid of leader) */ 112}; 113 114/* 115 * One structure allocated per process group. 116 */ 117struct pgrp { 118 LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */ 119 struct session *pg_session; /* Pointer to session */ 120 pid_t pg_id; /* Pgrp id */ 121 int pg_jobc; /* 122 * Number of processes qualifying 123 * pgrp for job control 124 */ 125}; 126 127/* 128 * Autoloadable syscall definition 129 */ 130struct sc_autoload { 131 u_int al_code; 132 const char *al_module; 133}; 134 135/* 136 * One structure allocated per emulation. 137 */ 138struct exec_package; 139struct ras; 140struct kauth_cred; 141 142struct emul { 143 const char *e_name; /* Symbolic name */ 144 const char *e_path; /* Extra emulation path (NULL if none)*/ 145#ifndef __HAVE_MINIMAL_EMUL 146 int e_flags; /* Miscellaneous flags, see above */ 147 /* Syscall handling function */ 148 const int *e_errno; /* Errno array */ 149 int e_nosys; /* Offset of the nosys() syscall */ 150 int e_nsysent; /* Number of system call entries */ 151#endif 152 struct sysent *e_sysent; /* System call array */ 153 const char * const *e_syscallnames; /* System call name array */ 154 /* Signal sending function */ 155 struct sc_autoload *e_sc_autoload; /* List of autoloadable syscalls */ 156 void (*e_sendsig)(const struct ksiginfo *, 157 const sigset_t *); 158 void (*e_trapsignal)(struct lwp *, struct ksiginfo *); 159 int (*e_tracesig)(struct proc *, int); 160 char *e_sigcode; /* Start of sigcode */ 161 char *e_esigcode; /* End of sigcode */ 162 /* Set registers before execution */ 163 struct uvm_object **e_sigobject;/* shared sigcode object */ 164 void (*e_setregs)(struct lwp *, struct exec_package *, 165 vaddr_t); 166 167 /* Per-process hooks */ 168 void (*e_proc_exec)(struct proc *, struct exec_package *); 169 void (*e_proc_fork)(struct proc *, struct lwp *, int); 170 void (*e_proc_exit)(struct proc *); 171 void (*e_lwp_fork)(struct lwp *, struct lwp *); 172 void (*e_lwp_exit)(struct lwp *); 173 174#ifdef __HAVE_SYSCALL_INTERN 175 void (*e_syscall_intern)(struct proc *); 176#else 177 void (*e_syscall)(void); 178#endif 179 /* Emulation specific sysctl data */ 180 struct sysctlnode *e_sysctlovly; 181 int (*e_fault)(struct proc *, vaddr_t, int); 182 183 vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t, 184 int); 185 186 /* Emulation-specific hook for userspace page faults */ 187 int (*e_usertrap)(struct lwp *, vaddr_t, void *); 188 189 size_t e_ucsize; /* size of ucontext_t */ 190 void (*e_startlwp)(void *); 191 192 /* Dtrace syscall probe */ 193 void (*e_dtrace_syscall)(uint32_t, register_t, 194 const struct sysent *, const void *, 195 const register_t *, int); 196 197 /* Emulation specific support for ktracing signal posts */ 198 void (*e_ktrpsig)(int, sig_t, const sigset_t *, 199 const struct ksiginfo *); 200}; 201 202/* 203 * Emulation miscellaneous flags 204 */ 205#define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */ 206 207/* 208 * Description of a process. 209 * 210 * This structure contains the information needed to manage a thread of 211 * control, known in UN*X as a process; it has references to substructures 212 * containing descriptions of things that the process uses, but may share 213 * with related processes. The process structure and the substructures 214 * are always addressible except for those marked "(PROC ONLY)" below, 215 * which might be addressible only on a processor on which the process 216 * is running. 217 * 218 * Field markings and the corresponding locks: 219 * 220 * a: p_auxlock 221 * k: ktrace_mutex 222 * l: proc_lock 223 * t: p_stmutex 224 * p: p_lock 225 * (: updated atomically 226 * :: unlocked, stable 227 */ 228struct vmspace; 229 230struct proc { 231 LIST_ENTRY(proc) p_list; /* l: List of all processes */ 232 233 kmutex_t p_auxlock; /* :: secondary, longer term lock */ 234 kmutex_t *p_lock; /* :: general mutex */ 235 kmutex_t p_stmutex; /* :: mutex on profiling state */ 236 krwlock_t p_reflock; /* p: lock for debugger, procfs */ 237 kcondvar_t p_waitcv; /* p: wait, stop CV on children */ 238 kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */ 239 240 /* Substructures: */ 241 struct kauth_cred *p_cred; /* p: Master copy of credentials */ 242 struct filedesc *p_fd; /* :: Ptr to open files structure */ 243 struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */ 244 struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */ 245 struct plimit *p_limit; /* :: Process limits */ 246 struct vmspace *p_vmspace; /* :: Address space */ 247 struct sigacts *p_sigacts; /* :: Process sigactions */ 248 struct aioproc *p_aio; /* p: Asynchronous I/O data */ 249 u_int p_mqueue_cnt; /* (: Count of open message queues */ 250 specificdata_reference 251 p_specdataref; /* subsystem proc-specific data */ 252 253 int p_exitsig; /* l: signal to send to parent on exit */ 254 int p_flag; /* p: PK_* flags */ 255 int p_sflag; /* p: PS_* flags */ 256 int p_slflag; /* s, l: PSL_* flags */ 257 int p_lflag; /* l: PL_* flags */ 258 int p_stflag; /* t: PST_* flags */ 259 char p_stat; /* p: S* process status. */ 260 char p_trace_enabled;/* p: cached by syscall_intern() */ 261 char p_pad1[2]; /* unused */ 262 263 pid_t p_pid; /* :: Process identifier. */ 264 LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */ 265 struct proc *p_pptr; /* l: Pointer to parent process. */ 266 LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */ 267 LIST_HEAD(, proc) p_children; /* l: List of children. */ 268 LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */ 269 struct ras *p_raslist; /* a: List of RAS entries */ 270 271/* The following fields are all zeroed upon creation in fork. */ 272#define p_startzero p_nlwps 273 274 int p_nlwps; /* p: Number of LWPs */ 275 int p_nzlwps; /* p: Number of zombie LWPs */ 276 int p_nrlwps; /* p: Number running/sleeping LWPs */ 277 int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */ 278 int p_ndlwps; /* p: Number of detached LWPs */ 279 int p_nlwpid; /* p: Next LWP ID */ 280 u_int p_nstopchild; /* l: Count of stopped/dead children */ 281 u_int p_waited; /* l: parent has waited on child */ 282 struct lwp *p_zomblwp; /* p: detached LWP to be reaped */ 283 struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */ 284 285 /* scheduling */ 286 void *p_sched_info; /* p: Scheduler-specific structure */ 287 fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */ 288 fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */ 289 unsigned int p_forktime; 290 fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */ 291 292 struct proc *p_opptr; /* l: save parent during ptrace. */ 293 struct ptimers *p_timers; /* Timers: real, virtual, profiling */ 294 struct bintime p_rtime; /* p: real time */ 295 u_quad_t p_uticks; /* t: Statclock hits in user mode */ 296 u_quad_t p_sticks; /* t: Statclock hits in system mode */ 297 u_quad_t p_iticks; /* t: Statclock hits processing intr */ 298 299 int p_traceflag; /* k: Kernel trace points */ 300 void *p_tracep; /* k: Trace private data */ 301 struct vnode *p_textvp; /* :: Vnode of executable */ 302 303 struct emul *p_emul; /* :: emulation information */ 304 void *p_emuldata; /* :: per-proc emul data, or NULL */ 305 const struct execsw *p_execsw; /* :: exec package information */ 306 struct klist p_klist; /* p: knotes attached to proc */ 307 308 LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */ 309 sigpend_t p_sigpend; /* p: pending signals */ 310 struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */ 311 pid_t p_ppid; /* :: cached parent pid */ 312 pid_t p_fpid; /* :: forked pid */ 313 pid_t p_vfpid; /* :: vforked pid */ 314 pid_t p_vfpid_done; /* :: vforked done pid */ 315 lwpid_t p_lwp_created; /* :: lwp created */ 316 lwpid_t p_lwp_exited; /* :: lwp exited */ 317 u_int p_nsems; /* Count of semaphores */ 318 319/* 320 * End area that is zeroed on creation 321 */ 322#define p_endzero p_startcopy 323 324/* 325 * The following fields are all copied upon creation in fork. 326 */ 327#define p_startcopy p_sigctx 328 329 struct sigctx p_sigctx; /* p: Shared signal state */ 330 331 u_char p_nice; /* p: Process "nice" value */ 332 char p_comm[MAXCOMLEN+1]; 333 /* p: basename of last exec file */ 334 struct pgrp *p_pgrp; /* l: Pointer to process group */ 335 336 vaddr_t p_psstrp; /* :: address of process's ps_strings */ 337 u_int p_pax; /* :: PAX flags */ 338 339 int p_xexit; /* p: exit code */ 340/* 341 * End area that is copied on creation 342 */ 343#define p_endcopy p_xsig 344 u_short p_xsig; /* p: stop signal */ 345 u_short p_acflag; /* p: Acc. flags; see struct lwp also */ 346 struct mdproc p_md; /* p: Any machine-dependent fields */ 347 vaddr_t p_stackbase; /* :: ASLR randomized stack base */ 348 struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ 349}; 350 351#define p_rlimit p_limit->pl_rlimit 352#define p_session p_pgrp->pg_session 353#define p_pgid p_pgrp->pg_id 354 355#endif /* _KMEMUSER || _KERNEL */ 356 357/* 358 * Status values. 359 */ 360#define SIDL 1 /* Process being created by fork */ 361#define SACTIVE 2 /* Process is not stopped */ 362#define SDYING 3 /* About to die */ 363#define SSTOP 4 /* Process debugging or suspension */ 364#define SZOMB 5 /* Awaiting collection by parent */ 365#define SDEAD 6 /* Almost a zombie */ 366 367#define P_ZOMBIE(p) \ 368 ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD) 369 370/* 371 * These flags are kept in p_flag and are protected by p_lock. Access from 372 * process context only. 373 */ 374#define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */ 375#define PK_SYSTEM 0x00000002 /* System process (kthread) */ 376#define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */ 377#define PK_SUGID 0x00000100 /* Had set id privileges since last exec */ 378#define PK_EXEC 0x00004000 /* Process called exec */ 379#define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */ 380#define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */ 381#define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */ 382#define PK_MARKER 0x80000000 /* Is a dummy marker process */ 383 384/* 385 * These flags are kept in p_sflag and are protected by p_lock. Access from 386 * process context only. 387 */ 388#define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ 389#define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */ 390#define PS_WCORE 0x00001000 /* Process needs to dump core */ 391#define PS_WEXIT 0x00002000 /* Working on exiting */ 392#define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */ 393#define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */ 394#define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */ 395#define PS_NOTIFYSTOP 0x10000000 /* Notify parent of successful STOP */ 396#define PS_COREDUMP 0x20000000 /* Process core-dumped */ 397#define PS_CONTINUED 0x40000000 /* Process is continued */ 398#define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */ 399 400/* 401 * These flags are kept in p_slflag and are protected by the proc_lock 402 * and p_lock. Access from process context only. 403 */ 404#define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */ 405#define PSL_TRACEVFORK 0x00000002 /* traced process wants vfork events */ 406#define PSL_TRACEVFORK_DONE \ 407 0x00000004 /* traced process wants vfork done events */ 408#define PSL_TRACELWP_CREATE \ 409 0x00000008 /* traced process wants LWP create events */ 410#define PSL_TRACELWP_EXIT \ 411 0x00000010 /* traced process wants LWP exit events */ 412 413#define PSL_TRACED 0x00000800 /* Debugged process being traced */ 414#define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */ 415#define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */ 416#define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */ 417 418/* 419 * Kept in p_stflag and protected by p_stmutex. 420 */ 421#define PST_PROFIL 0x00000020 /* Has started profiling */ 422 423/* 424 * Kept in p_lflag and protected by the proc_lock. Access 425 * from process context only. 426 */ 427#define PL_CONTROLT 0x00000002 /* Has a controlling terminal */ 428#define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */ 429#define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */ 430#define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */ 431 432#if defined(_KMEMUSER) || defined(_KERNEL) 433 434/* 435 * Macro to compute the exit signal to be delivered. 436 */ 437#define P_EXITSIG(p) \ 438 (((p)->p_slflag & PSL_TRACED) ? SIGCHLD : p->p_exitsig) 439/* 440 * Compute a wait(2) 16 bit exit status code 441 */ 442#define P_WAITSTATUS(p) W_EXITCODE((p)->p_xexit, ((p)->p_xsig | \ 443 (((p)->p_sflag & PS_COREDUMP) ? WCOREFLAG : 0))) 444 445LIST_HEAD(proclist, proc); /* A list of processes */ 446 447/* 448 * This structure associates a proclist with its lock. 449 */ 450struct proclist_desc { 451 struct proclist *pd_list; /* The list */ 452 /* 453 * XXX Add a pointer to the proclist's lock eventually. 454 */ 455}; 456 457#ifdef _KERNEL 458 459/* 460 * We use process IDs <= PID_MAX until there are > 16k processes. 461 * NO_PGID is used to represent "no process group" for a tty. 462 */ 463#define PID_MAX 30000 464#define NO_PGID ((pid_t)-1) 465 466#define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 467 468/* 469 * Flags passed to fork1(). 470 */ 471#define FORK_PPWAIT 0x0001 /* Block parent until child exit */ 472#define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ 473#define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ 474#define FORK_SHAREFILES 0x0008 /* Share file descriptors */ 475#define FORK_SHARESIGS 0x0010 /* Share signal actions */ 476#define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ 477#define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ 478#define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ 479 480extern struct proc proc0; /* Process slot for swapper */ 481extern u_int nprocs; /* Current number of procs */ 482extern int maxproc; /* Max number of procs */ 483#define vmspace_kernel() (proc0.p_vmspace) 484 485extern kmutex_t *proc_lock; 486extern struct proclist allproc; /* List of all processes */ 487extern struct proclist zombproc; /* List of zombie processes */ 488 489extern struct proc *initproc; /* Process slots for init, pager */ 490 491extern const struct proclist_desc proclists[]; 492 493extern struct pool ptimer_pool; /* Memory pool for ptimers */ 494 495int proc_find_locked(struct lwp *, struct proc **, pid_t); 496proc_t * proc_find_raw(pid_t); 497proc_t * proc_find(pid_t); /* Find process by ID */ 498struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ 499 500void procinit(void); 501void procinit_sysctl(void); 502int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); 503void proc_leavepgrp(struct proc *); 504void proc_sesshold(struct session *); 505void proc_sessrele(struct session *); 506void fixjobc(struct proc *, struct pgrp *, int); 507 508int tsleep(wchan_t, pri_t, const char *, int); 509int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); 510void wakeup(wchan_t); 511int kpause(const char *, bool, int, kmutex_t *); 512void exit1(struct lwp *, int, int) __dead; 513int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval); 514int do_sys_wait(int *, int *, int, struct rusage *); 515int do_sys_waitid(idtype_t, id_t, int *, int *, int, struct wrusage *, 516 siginfo_t *); 517 518struct proc *proc_alloc(void); 519void proc0_init(void); 520pid_t proc_alloc_pid(struct proc *); 521void proc_free_pid(pid_t); 522void proc_free_mem(struct proc *); 523void exit_lwps(struct lwp *l); 524int fork1(struct lwp *, int, int, void *, size_t, 525 void (*)(void *), void *, register_t *, struct proc **); 526int pgid_in_session(struct proc *, pid_t); 527void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, 528 void (*)(void *), void *); 529void cpu_lwp_free(struct lwp *, int); 530void cpu_lwp_free2(struct lwp *); 531void cpu_spawn_return(struct lwp*); 532 533#ifdef __HAVE_SYSCALL_INTERN 534void syscall_intern(struct proc *); 535#endif 536 537void child_return(void *); 538 539int proc_isunder(struct proc *, struct lwp *); 540int proc_uidmatch(kauth_cred_t, kauth_cred_t); 541 542int proc_vmspace_getref(struct proc *, struct vmspace **); 543void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); 544void proc_crmod_enter(void); 545int proc_getauxv(struct proc *, void **, size_t *); 546 547int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t); 548void proc_specific_key_delete(specificdata_key_t); 549void proc_initspecific(struct proc *); 550void proc_finispecific(struct proc *); 551void * proc_getspecific(struct proc *, specificdata_key_t); 552void proc_setspecific(struct proc *, specificdata_key_t, void *); 553int proc_compare(const struct proc *, const struct lwp *, 554 const struct proc *, const struct lwp *); 555 556int proclist_foreach_call(struct proclist *, 557 int (*)(struct proc *, void *arg), void *); 558 559static inline struct proc * 560_proclist_skipmarker(struct proc *p0) 561{ 562 struct proc *p = p0; 563 564 while (p != NULL && p->p_flag & PK_MARKER) 565 p = LIST_NEXT(p, p_list); 566 567 return p; 568} 569 570#define PROC_PTRSZ(p) (((p)->p_flag & PK_32) ? sizeof(int) : sizeof(void *)) 571#define PROC_REGSZ(p) (((p)->p_flag & PK_32) ? \ 572 sizeof(process_reg32) : sizeof(struct reg)) 573#define PROC_FPREGSZ(p) (((p)->p_flag & PK_32) ? \ 574 sizeof(process_fpreg32) : sizeof(struct fpreg)) 575#define PROC_DBREGSZ(p) (((p)->p_flag & PK_32) ? \ 576 sizeof(process_dbreg32) : sizeof(struct dbreg)) 577 578/* 579 * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones. 580 */ 581#define PROCLIST_FOREACH(var, head) \ 582 for ((var) = LIST_FIRST(head); \ 583 ((var) = _proclist_skipmarker(var)) != NULL; \ 584 (var) = LIST_NEXT(var, p_list)) 585 586#ifdef KSTACK_CHECK_MAGIC 587void kstack_setup_magic(const struct lwp *); 588void kstack_check_magic(const struct lwp *); 589#else 590#define kstack_setup_magic(x) 591#define kstack_check_magic(x) 592#endif 593 594extern struct emul emul_netbsd; 595 596#endif /* _KERNEL */ 597 598/* 599 * Kernel stack parameters. 600 * 601 * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack, 602 * excluding red-zone. 603 * 604 * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone. 605 * 606 * if <machine/proc.h> provides the MD definition, it will be used. 607 */ 608#ifndef KSTACK_LOWEST_ADDR 609#define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) 610#endif 611#ifndef KSTACK_SIZE 612#define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) 613#endif 614 615#endif /* _KMEMUSER || _KERNEL */ 616 617#endif /* !_SYS_PROC_H_ */ 618