proc.h revision 1.355
1/* $NetBSD: proc.h,v 1.355 2019/07/15 19:34:45 pgoyette 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 uint32_t *e_nomodbits; /* sys_nosys/sys_nomodule flags 154 * for syscall_disestablish() */ 155 const char * const *e_syscallnames; /* System call name array */ 156 struct sc_autoload *e_sc_autoload; /* List of autoloadable syscalls */ 157 /* Signal sending function */ 158 void (*e_sendsig)(const struct ksiginfo *, 159 const sigset_t *); 160 void (*e_trapsignal)(struct lwp *, struct ksiginfo *); 161 char *e_sigcode; /* Start of sigcode */ 162 char *e_esigcode; /* End of sigcode */ 163 /* Set registers before execution */ 164 struct uvm_object **e_sigobject;/* shared sigcode object */ 165 void (*e_setregs)(struct lwp *, struct exec_package *, 166 vaddr_t); 167 168 /* Per-process hooks */ 169 void (*e_proc_exec)(struct proc *, struct exec_package *); 170 void (*e_proc_fork)(struct proc *, struct lwp *, int); 171 void (*e_proc_exit)(struct proc *); 172 void (*e_lwp_fork)(struct lwp *, struct lwp *); 173 void (*e_lwp_exit)(struct lwp *); 174 175#ifdef __HAVE_SYSCALL_INTERN 176 void (*e_syscall_intern)(struct proc *); 177#else 178 void (*e_syscall)(void); 179#endif 180 /* Emulation specific sysctl data */ 181 struct sysctlnode *e_sysctlovly; 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 uint64_t p_xutime; /* p: utime exposed to userspace */ 299 uint64_t p_xstime; /* p: stime exposed to userspace */ 300 301 int p_traceflag; /* k: Kernel trace points */ 302 void *p_tracep; /* k: Trace private data */ 303 struct vnode *p_textvp; /* :: Vnode of executable */ 304 305 struct emul *p_emul; /* :: emulation information */ 306 void *p_emuldata; /* :: per-proc emul data, or NULL */ 307 const struct execsw *p_execsw; /* :: exec package information */ 308 struct klist p_klist; /* p: knotes attached to proc */ 309 310 LIST_HEAD(, lwp) p_sigwaiters; /* p: LWPs waiting for signals */ 311 sigpend_t p_sigpend; /* p: pending signals */ 312 struct lcproc *p_lwpctl; /* p, a: _lwp_ctl() information */ 313 pid_t p_ppid; /* :: cached parent pid */ 314 pid_t p_fpid; /* :: forked pid */ 315 pid_t p_vfpid; /* :: vforked pid */ 316 pid_t p_vfpid_done; /* :: vforked done pid */ 317 lwpid_t p_lwp_created; /* :: lwp created */ 318 lwpid_t p_lwp_exited; /* :: lwp exited */ 319 pid_t p_pspid; /* :: posix_spawn pid */ 320 char *p_path; /* :: full pathname of executable */ 321 322/* 323 * End area that is zeroed on creation 324 */ 325#define p_endzero p_startcopy 326 327/* 328 * The following fields are all copied upon creation in fork. 329 */ 330#define p_startcopy p_sigctx 331 332 struct sigctx p_sigctx; /* p: Shared signal state */ 333 334 u_char p_nice; /* p: Process "nice" value */ 335 char p_comm[MAXCOMLEN+1]; 336 /* p: basename of last exec file */ 337 struct pgrp *p_pgrp; /* l: Pointer to process group */ 338 339 vaddr_t p_psstrp; /* :: address of process's ps_strings */ 340 u_int p_pax; /* :: PAX flags */ 341 int p_xexit; /* p: exit code */ 342/* 343 * End area that is copied on creation 344 */ 345#define p_endcopy p_xsig 346 u_short p_xsig; /* p: stop signal */ 347 u_short p_acflag; /* p: Acc. flags; see struct lwp also */ 348 struct mdproc p_md; /* p: Any machine-dependent fields */ 349 vaddr_t p_stackbase; /* :: ASLR randomized stack base */ 350 struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ 351}; 352 353#define p_rlimit p_limit->pl_rlimit 354#define p_session p_pgrp->pg_session 355#define p_pgid p_pgrp->pg_id 356 357#endif /* _KMEMUSER || _KERNEL */ 358 359/* 360 * Status values. 361 */ 362#define SIDL 1 /* Process being created by fork */ 363#define SACTIVE 2 /* Process is not stopped */ 364#define SDYING 3 /* About to die */ 365#define SSTOP 4 /* Process debugging or suspension */ 366#define SZOMB 5 /* Awaiting collection by parent */ 367#define SDEAD 6 /* Almost a zombie */ 368 369#define P_ZOMBIE(p) \ 370 ((p)->p_stat == SZOMB || (p)->p_stat == SDYING || (p)->p_stat == SDEAD) 371 372/* 373 * These flags are kept in p_flag and are protected by p_lock. Access from 374 * process context only. 375 */ 376#define PK_ADVLOCK 0x00000001 /* Process may hold a POSIX advisory lock */ 377#define PK_SYSTEM 0x00000002 /* System process (kthread) */ 378#define PK_SYSVSEM 0x00000004 /* Used SysV semaphores */ 379#define PK_SUGID 0x00000100 /* Had set id privileges since last exec */ 380#define PK_KMEM 0x00000200 /* Has kmem access */ 381#define PK_EXEC 0x00004000 /* Process called exec */ 382#define PK_NOCLDWAIT 0x00020000 /* No zombies if child dies */ 383#define PK_32 0x00040000 /* 32-bit process (used on 64-bit kernels) */ 384#define PK_CLDSIGIGN 0x00080000 /* Process is ignoring SIGCHLD */ 385#define PK_MARKER 0x80000000 /* Is a dummy marker process */ 386 387/* 388 * These flags are kept in p_sflag and are protected by p_lock. Access from 389 * process context only. 390 */ 391#define PS_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ 392#define PS_RUMP_LWPEXIT 0x00000400 /* LWPs in RUMP kernel should exit for GC */ 393#define PS_WCORE 0x00001000 /* Process needs to dump core */ 394#define PS_WEXIT 0x00002000 /* Working on exiting */ 395#define PS_STOPFORK 0x00800000 /* Child will be stopped on fork(2) */ 396#define PS_STOPEXEC 0x01000000 /* Will be stopped on exec(2) */ 397#define PS_STOPEXIT 0x02000000 /* Will be stopped at process exit */ 398#define PS_COREDUMP 0x20000000 /* Process core-dumped */ 399#define PS_CONTINUED 0x40000000 /* Process is continued */ 400#define PS_STOPPING 0x80000000 /* Transitioning SACTIVE -> SSTOP */ 401 402/* 403 * These flags are kept in p_slflag and are protected by the proc_lock 404 * and p_lock. Access from process context only. 405 */ 406#define PSL_TRACEFORK 0x00000001 /* traced process wants fork events */ 407#define PSL_TRACEVFORK 0x00000002 /* traced process wants vfork events */ 408#define PSL_TRACEVFORK_DONE \ 409 0x00000004 /* traced process wants vfork done events */ 410#define PSL_TRACELWP_CREATE \ 411 0x00000008 /* traced process wants LWP create events */ 412#define PSL_TRACELWP_EXIT \ 413 0x00000010 /* traced process wants LWP exit events */ 414#define PSL_TRACEPOSIX_SPAWN \ 415 0x00000020 /* traced process wants posix_spawn events */ 416 417#define PSL_TRACED 0x00000800 /* Debugged process being traced */ 418#define PSL_CHTRACED 0x00400000 /* Child has been traced & reparented */ 419#define PSL_SYSCALL 0x04000000 /* process has PT_SYSCALL enabled */ 420#define PSL_SYSCALLEMU 0x08000000 /* cancel in-progress syscall */ 421 422/* 423 * Kept in p_stflag and protected by p_stmutex. 424 */ 425#define PST_PROFIL 0x00000020 /* Has started profiling */ 426 427/* 428 * Kept in p_lflag and protected by the proc_lock. Access 429 * from process context only. 430 */ 431#define PL_CONTROLT 0x00000002 /* Has a controlling terminal */ 432#define PL_PPWAIT 0x00000010 /* Parent is waiting for child exec/exit */ 433#define PL_SIGCOMPAT 0x00000200 /* Has used compat signal trampoline */ 434#define PL_ORPHANPG 0x20000000 /* Member of an orphaned pgrp */ 435 436#if defined(_KMEMUSER) || defined(_KERNEL) 437 438/* 439 * Macro to compute the exit signal to be delivered. 440 */ 441#define P_EXITSIG(p) \ 442 (((p)->p_slflag & PSL_TRACED) ? SIGCHLD : p->p_exitsig) 443/* 444 * Compute a wait(2) 16 bit exit status code 445 */ 446#define P_WAITSTATUS(p) W_EXITCODE((p)->p_xexit, ((p)->p_xsig | \ 447 (((p)->p_sflag & PS_COREDUMP) ? WCOREFLAG : 0))) 448 449LIST_HEAD(proclist, proc); /* A list of processes */ 450 451/* 452 * This structure associates a proclist with its lock. 453 */ 454struct proclist_desc { 455 struct proclist *pd_list; /* The list */ 456 /* 457 * XXX Add a pointer to the proclist's lock eventually. 458 */ 459}; 460 461#ifdef _KERNEL 462 463/* 464 * We use process IDs <= PID_MAX until there are > 16k processes. 465 * NO_PGID is used to represent "no process group" for a tty. 466 */ 467#define PID_MAX 30000 468#define NO_PGID ((pid_t)-1) 469 470#define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 471 472/* 473 * Flags passed to fork1(). 474 */ 475#define FORK_PPWAIT 0x0001 /* Block parent until child exit */ 476#define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ 477#define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ 478#define FORK_SHAREFILES 0x0008 /* Share file descriptors */ 479#define FORK_SHARESIGS 0x0010 /* Share signal actions */ 480#define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ 481#define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ 482#define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ 483 484extern struct proc proc0; /* Process slot for swapper */ 485extern u_int nprocs; /* Current number of procs */ 486extern int maxproc; /* Max number of procs */ 487#define vmspace_kernel() (proc0.p_vmspace) 488 489extern kmutex_t *proc_lock; 490extern struct proclist allproc; /* List of all processes */ 491extern struct proclist zombproc; /* List of zombie processes */ 492 493extern struct proc *initproc; /* Process slots for init, pager */ 494 495extern const struct proclist_desc proclists[]; 496 497extern struct pool ptimer_pool; /* Memory pool for ptimers */ 498 499int proc_find_locked(struct lwp *, struct proc **, pid_t); 500proc_t * proc_find_raw(pid_t); 501proc_t * proc_find(pid_t); /* Find process by ID */ 502struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ 503 504void procinit(void); 505void procinit_sysctl(void); 506int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); 507void proc_leavepgrp(struct proc *); 508void proc_sesshold(struct session *); 509void proc_sessrele(struct session *); 510void fixjobc(struct proc *, struct pgrp *, int); 511 512int tsleep(wchan_t, pri_t, const char *, int); 513int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); 514void wakeup(wchan_t); 515int kpause(const char *, bool, int, kmutex_t *); 516void exit1(struct lwp *, int, int) __dead; 517int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval); 518int do_sys_wait(int *, int *, int, struct rusage *); 519int do_sys_waitid(idtype_t, id_t, int *, int *, int, struct wrusage *, 520 siginfo_t *); 521 522struct proc *proc_alloc(void); 523void proc0_init(void); 524pid_t proc_alloc_pid(struct proc *); 525void proc_free_pid(pid_t); 526void proc_free_mem(struct proc *); 527void exit_lwps(struct lwp *l); 528int fork1(struct lwp *, int, int, void *, size_t, 529 void (*)(void *), void *, register_t *); 530int pgid_in_session(struct proc *, pid_t); 531void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, 532 void (*)(void *), void *); 533void cpu_lwp_free(struct lwp *, int); 534void cpu_lwp_free2(struct lwp *); 535void cpu_spawn_return(struct lwp*); 536 537#ifdef __HAVE_SYSCALL_INTERN 538void syscall_intern(struct proc *); 539#endif 540 541void md_child_return(struct lwp *); 542void child_return(void *); 543 544int proc_isunder(struct proc *, struct lwp *); 545int proc_uidmatch(kauth_cred_t, kauth_cred_t); 546 547int proc_vmspace_getref(struct proc *, struct vmspace **); 548void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); 549void proc_crmod_enter(void); 550int proc_getauxv(struct proc *, void **, size_t *); 551 552int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t); 553void proc_specific_key_delete(specificdata_key_t); 554void proc_initspecific(struct proc *); 555void proc_finispecific(struct proc *); 556void * proc_getspecific(struct proc *, specificdata_key_t); 557void proc_setspecific(struct proc *, specificdata_key_t, void *); 558int proc_compare(const struct proc *, const struct lwp *, 559 const struct proc *, const struct lwp *); 560 561int proclist_foreach_call(struct proclist *, 562 int (*)(struct proc *, void *arg), void *); 563 564static __inline struct proc * 565_proclist_skipmarker(struct proc *p0) 566{ 567 struct proc *p = p0; 568 569 while (p != NULL && p->p_flag & PK_MARKER) 570 p = LIST_NEXT(p, p_list); 571 572 return p; 573} 574 575#define PROC_PTRSZ(p) (((p)->p_flag & PK_32) ? sizeof(int) : sizeof(void *)) 576#define PROC_REGSZ(p) (((p)->p_flag & PK_32) ? \ 577 sizeof(process_reg32) : sizeof(struct reg)) 578#define PROC_FPREGSZ(p) (((p)->p_flag & PK_32) ? \ 579 sizeof(process_fpreg32) : sizeof(struct fpreg)) 580#define PROC_DBREGSZ(p) (((p)->p_flag & PK_32) ? \ 581 sizeof(process_dbreg32) : sizeof(struct dbreg)) 582 583/* 584 * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones. 585 */ 586#define PROCLIST_FOREACH(var, head) \ 587 for ((var) = LIST_FIRST(head); \ 588 ((var) = _proclist_skipmarker(var)) != NULL; \ 589 (var) = LIST_NEXT(var, p_list)) 590 591#ifdef KSTACK_CHECK_MAGIC 592void kstack_setup_magic(const struct lwp *); 593void kstack_check_magic(const struct lwp *); 594#else 595#define kstack_setup_magic(x) 596#define kstack_check_magic(x) 597#endif 598 599extern struct emul emul_netbsd; 600 601#endif /* _KERNEL */ 602 603/* 604 * Kernel stack parameters. 605 * 606 * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack, 607 * excluding red-zone. 608 * 609 * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone. 610 * 611 * if <machine/proc.h> provides the MD definition, it will be used. 612 */ 613#ifndef KSTACK_LOWEST_ADDR 614#define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) 615#endif 616#ifndef KSTACK_SIZE 617#define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) 618#endif 619 620#endif /* _KMEMUSER || _KERNEL */ 621 622#endif /* !_SYS_PROC_H_ */ 623