1 /* $NetBSD: proc.h,v 1.373 2023/10/04 20:52:07 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007, 2008, 2020, 2023 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/radixtree.h> 91 #include <sys/signalvar.h> 92 #include <sys/siginfo.h> 93 #include <sys/event.h> 94 #include <sys/specificdata.h> 95 96 #ifdef _KERNEL 97 #include <sys/resourcevar.h> 98 #else 99 #include <sys/time.h> 100 #include <sys/resource.h> 101 #endif 102 103 /* 104 * One structure allocated per session. 105 */ 106 struct session { 107 int s_count; /* Ref cnt; pgrps in session */ 108 u_int s_flags; 109 #define S_LOGIN_SET 1 /* s_login set in this session */ 110 struct proc *s_leader; /* Session leader */ 111 struct vnode *s_ttyvp; /* Vnode of controlling terminal */ 112 struct tty *s_ttyp; /* Controlling terminal */ 113 char s_login[MAXLOGNAME]; /* Setlogin() name */ 114 pid_t s_sid; /* Session ID (pid of leader) */ 115 }; 116 117 /* 118 * One structure allocated per process group. 119 */ 120 struct pgrp { 121 LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members */ 122 struct session *pg_session; /* Pointer to session */ 123 pid_t pg_id; /* Pgrp id */ 124 int pg_jobc; /* 125 * Number of processes qualifying 126 * pgrp for job control 127 */ 128 }; 129 130 /* 131 * Autoloadable syscall definition 132 */ 133 struct sc_autoload { 134 u_int al_code; 135 const char *al_module; 136 }; 137 138 /* 139 * One structure allocated per emulation. 140 */ 141 struct exec_package; 142 struct ras; 143 struct kauth_cred; 144 145 struct emul { 146 const char *e_name; /* Symbolic name */ 147 const char *e_path; /* Extra emulation path (NULL if none)*/ 148 #ifndef __HAVE_MINIMAL_EMUL 149 int e_flags; /* Miscellaneous flags, see above */ 150 /* Syscall handling function */ 151 const int *e_errno; /* Errno array */ 152 int e_nosys; /* Offset of the nosys() syscall */ 153 int e_nsysent; /* Number of system call entries */ 154 #endif 155 struct sysent *e_sysent; /* System call array */ 156 const uint32_t *e_nomodbits; /* sys_nosys/sys_nomodule flags 157 * for syscall_disestablish() */ 158 const char * const *e_syscallnames; /* System call name array */ 159 struct sc_autoload *e_sc_autoload; /* List of autoloadable syscalls */ 160 /* Signal sending function */ 161 void (*e_sendsig)(const struct ksiginfo *, 162 const sigset_t *); 163 void (*e_trapsignal)(struct lwp *, struct ksiginfo *); 164 char *e_sigcode; /* Start of sigcode */ 165 char *e_esigcode; /* End of sigcode */ 166 /* Set registers before execution */ 167 struct uvm_object **e_sigobject;/* shared sigcode object */ 168 void (*e_setregs)(struct lwp *, struct exec_package *, 169 vaddr_t); 170 171 /* Per-process hooks */ 172 void (*e_proc_exec)(struct proc *, struct exec_package *); 173 void (*e_proc_fork)(struct proc *, struct lwp *, int); 174 void (*e_proc_exit)(struct proc *); 175 void (*e_lwp_fork)(struct lwp *, struct lwp *); 176 void (*e_lwp_exit)(struct lwp *); 177 178 #ifdef __HAVE_SYSCALL_INTERN 179 void (*e_syscall_intern)(struct proc *); 180 #else 181 void (*e_syscall)(void); 182 #endif 183 /* Emulation specific sysctl data */ 184 struct sysctlnode *e_sysctlovly; 185 186 vaddr_t (*e_vm_default_addr)(struct proc *, vaddr_t, vsize_t, 187 int); 188 189 /* Emulation-specific hook for userspace page faults */ 190 int (*e_usertrap)(struct lwp *, vaddr_t, void *); 191 192 size_t e_ucsize; /* size of ucontext_t */ 193 void (*e_startlwp)(void *); 194 195 /* Dtrace syscall probe */ 196 void (*e_dtrace_syscall)(uint32_t, register_t, 197 const struct sysent *, const void *, 198 const register_t *, int); 199 200 /* Emulation specific support for ktracing signal posts */ 201 void (*e_ktrpsig)(int, sig_t, const sigset_t *, 202 const struct ksiginfo *); 203 }; 204 205 /* 206 * Emulation miscellaneous flags 207 */ 208 #define EMUL_HAS_SYS___syscall 0x001 /* Has SYS___syscall */ 209 210 /* 211 * Description of a process. 212 * 213 * This structure contains the information needed to manage a thread of 214 * control, known in UN*X as a process; it has references to substructures 215 * containing descriptions of things that the process uses, but may share 216 * with related processes. The process structure and the substructures 217 * are always addressible except for those marked "(PROC ONLY)" below, 218 * which might be addressible only on a processor on which the process 219 * is running. 220 * 221 * Field markings and the corresponding locks: 222 * 223 * a: p_auxlock 224 * k: ktrace_mutex 225 * l: proc_lock 226 * t: p_stmutex 227 * p: p_lock 228 * (: updated atomically 229 * :: unlocked, stable 230 */ 231 struct vmspace; 232 233 struct proc { 234 LIST_ENTRY(proc) p_list; /* l: List of all processes */ 235 kmutex_t *p_lock; /* :: general mutex */ 236 kcondvar_t p_waitcv; /* p: wait, stop CV on children */ 237 kcondvar_t p_lwpcv; /* p: wait, stop CV on LWPs */ 238 239 /* Substructures: */ 240 struct kauth_cred *p_cred; /* p: Master copy of credentials */ 241 struct filedesc *p_fd; /* :: Ptr to open files structure */ 242 struct cwdinfo *p_cwdi; /* :: cdir/rdir/cmask info */ 243 struct pstats *p_stats; /* :: Accounting/stats (PROC ONLY) */ 244 struct plimit *p_limit; /* :: Process limits */ 245 struct vmspace *p_vmspace; /* :: Address space */ 246 struct sigacts *p_sigacts; /* :: Process sigactions */ 247 struct aioproc *p_aio; /* p: Asynchronous I/O data */ 248 u_int p_mqueue_cnt; /* (: Count of open message queues */ 249 specificdata_reference 250 p_specdataref; /* subsystem proc-specific data */ 251 252 int p_exitsig; /* l: signal to send to parent on exit */ 253 int p_flag; /* p: PK_* flags */ 254 int p_sflag; /* p: PS_* flags */ 255 int p_stflag; /* t: PST_* flags */ 256 short p_slflag; /* l, p: PSL_* flags */ 257 char p_stat; /* l: S* process status. */ 258 char p_lflag; /* l: PL_* flags */ 259 char p_trace_enabled;/* p: cached by syscall_intern() */ 260 char p_pad1[3]; /* unused */ 261 262 pid_t p_pid; /* :: Process identifier. */ 263 LIST_ENTRY(proc) p_pglist; /* l: List of processes in pgrp. */ 264 struct proc *p_pptr; /* l: Pointer to parent process. */ 265 LIST_ENTRY(proc) p_sibling; /* l: List of sibling processes. */ 266 LIST_HEAD(, proc) p_children; /* l: List of children. */ 267 LIST_HEAD(, lwp) p_lwps; /* p: List of LWPs. */ 268 struct ras *p_raslist; /* a: List of RAS entries */ 269 270 /* The following fields are all zeroed upon creation in fork. */ 271 #define p_startzero p_nlwps 272 273 int p_nlwps; /* p: Number of LWPs */ 274 int p_nzlwps; /* p: Number of zombie LWPs */ 275 int p_nrlwps; /* p: Number running/sleeping LWPs */ 276 int p_nlwpwait; /* p: Number of LWPs in lwp_wait1() */ 277 int p_ndlwps; /* p: Number of detached LWPs */ 278 u_int p_nstopchild; /* l: Count of stopped/dead children */ 279 u_int p_waited; /* l: parent has waited on child */ 280 struct lwp *p_zomblwp; /* p: detached LWP to be reaped */ 281 struct lwp *p_vforklwp; /* p: parent LWP waiting at vfork() */ 282 283 /* scheduling */ 284 void *p_sched_info; /* p: Scheduler-specific structure */ 285 fixpt_t p_estcpu; /* p: Time avg. value of p_cpticks */ 286 fixpt_t p_estcpu_inherited; /* p: cpu inherited from children */ 287 unsigned int p_forktime; 288 fixpt_t p_pctcpu; /* p: %cpu from dead LWPs */ 289 290 struct proc *p_opptr; /* l: save parent during ptrace. */ 291 struct ptimers *p_timers; /* Timers: real, virtual, profiling */ 292 struct bintime p_rtime; /* p: real time */ 293 u_quad_t p_uticks; /* t: Statclock hits in user mode */ 294 u_quad_t p_sticks; /* t: Statclock hits in system mode */ 295 u_quad_t p_iticks; /* t: Statclock hits processing intr */ 296 uint64_t p_xutime; /* p: utime exposed to userspace */ 297 uint64_t p_xstime; /* p: stime exposed to userspace */ 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_oppid; /* :: cached original parent pid */ 313 char *p_path; /* :: full pathname of executable */ 314 315 /* 316 * End area that is zeroed on creation 317 */ 318 #define p_endzero p_startcopy 319 320 /* 321 * The following fields are all copied upon creation in fork. 322 */ 323 #define p_startcopy p_sigctx 324 325 struct sigctx p_sigctx; /* p: Shared signal state */ 326 327 u_char p_nice; /* p: Process "nice" value */ 328 char p_comm[MAXCOMLEN+1]; 329 /* p: basename of last exec file */ 330 struct pgrp *p_pgrp; /* l: Pointer to process group */ 331 332 vaddr_t p_psstrp; /* :: address of process's ps_strings */ 333 u_int p_pax; /* :: PAX flags */ 334 int p_xexit; /* p: exit code */ 335 /* 336 * End area that is copied on creation 337 */ 338 #define p_endcopy p_xsig 339 u_short p_xsig; /* p: stop signal */ 340 u_short p_acflag; /* p: Acc. flags; see struct lwp also */ 341 struct mdproc p_md; /* p: Any machine-dependent fields */ 342 vaddr_t p_stackbase; /* :: ASLR randomized stack base */ 343 struct kdtrace_proc *p_dtrace; /* :: DTrace-specific data. */ 344 /* 345 * Locks in their own cache line towards the end. 346 */ 347 kmutex_t p_auxlock /* :: secondary, longer term lock */ 348 __aligned(COHERENCY_UNIT); 349 kmutex_t p_stmutex; /* :: mutex on profiling state */ 350 krwlock_t p_reflock; /* :: lock for debugger, procfs */ 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 0x00000040 /* Debugged process being traced */ 418 #define PSL_TRACEDCHILD 0x00000080 /* Report process birth */ 419 #define PSL_CHTRACED 0x00000100 /* Child has been traced & reparented */ 420 #define PSL_SYSCALL 0x00000200 /* process has PT_SYSCALL enabled */ 421 #define PSL_SYSCALLEMU 0x00000400 /* cancel in-progress syscall */ 422 423 /* 424 * Kept in p_stflag and protected by p_stmutex. 425 */ 426 #define PST_PROFIL 0x00000020 /* Has started profiling */ 427 428 /* 429 * Kept in p_lflag and protected by the proc_lock. Access 430 * from process context only. 431 */ 432 #define PL_CONTROLT 0x00000001 /* Has a controlling terminal */ 433 #define PL_PPWAIT 0x00000002 /* Parent is waiting for child exec/exit */ 434 #define PL_SIGCOMPAT 0x00000004 /* Has used compat signal trampoline */ 435 #define PL_ORPHANPG 0x00000008 /* Member of an orphaned pgrp */ 436 437 #if defined(_KMEMUSER) || defined(_KERNEL) 438 439 /* 440 * Macro to compute the exit signal to be delivered. 441 */ 442 #define P_EXITSIG(p) \ 443 (((p)->p_slflag & PSL_TRACED) ? SIGCHLD : p->p_exitsig) 444 /* 445 * Compute a wait(2) 16 bit exit status code 446 */ 447 #define P_WAITSTATUS(p) W_EXITCODE((p)->p_xexit, ((p)->p_xsig | \ 448 (((p)->p_sflag & PS_COREDUMP) ? WCOREFLAG : 0))) 449 450 LIST_HEAD(proclist, proc); /* A list of processes */ 451 452 /* 453 * This structure associates a proclist with its lock. 454 */ 455 struct proclist_desc { 456 struct proclist *pd_list; /* The list */ 457 /* 458 * XXX Add a pointer to the proclist's lock eventually. 459 */ 460 }; 461 462 #ifdef _KERNEL 463 464 /* 465 * We use process IDs <= PID_MAX until there are > 16k processes. 466 * NO_PGID is used to represent "no process group" for a tty. 467 */ 468 #define PID_MAX 30000 469 #define NO_PGID ((pid_t)-1) 470 471 #define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) 472 473 /* 474 * Flags passed to fork1(). 475 */ 476 #define FORK_PPWAIT 0x0001 /* Block parent until child exit */ 477 #define FORK_SHAREVM 0x0002 /* Share vmspace with parent */ 478 #define FORK_SHARECWD 0x0004 /* Share cdir/rdir/cmask */ 479 #define FORK_SHAREFILES 0x0008 /* Share file descriptors */ 480 #define FORK_SHARESIGS 0x0010 /* Share signal actions */ 481 #define FORK_NOWAIT 0x0020 /* Make init the parent of the child */ 482 #define FORK_CLEANFILES 0x0040 /* Start with a clean descriptor set */ 483 #define FORK_SYSTEM 0x0080 /* Fork a kernel thread */ 484 485 extern struct proc proc0; /* Process slot for swapper */ 486 extern u_int nprocs; /* Current number of procs */ 487 extern int maxproc; /* Max number of procs */ 488 #define vmspace_kernel() (proc0.p_vmspace) 489 490 extern kmutex_t proc_lock; 491 extern struct proclist allproc; /* List of all processes */ 492 extern struct proclist zombproc; /* List of zombie processes */ 493 494 extern struct proc *initproc; /* Process slots for init, pager */ 495 496 extern const struct proclist_desc proclists[]; 497 498 int proc_find_locked(struct lwp *, struct proc **, pid_t); 499 proc_t * proc_find_raw(pid_t); 500 proc_t * proc_find(pid_t); /* Find process by ID */ 501 proc_t * proc_find_lwpid(pid_t); /* Find process by LWP ID */ 502 struct lwp * proc_find_lwp(proc_t *, pid_t); /* Find LWP in proc by ID */ 503 struct lwp * proc_find_lwp_unlocked(proc_t *, pid_t); 504 /* Find LWP, acquire proc */ 505 struct lwp * proc_find_lwp_acquire_proc(pid_t, proc_t **); 506 struct pgrp * pgrp_find(pid_t); /* Find process group by ID */ 507 508 void procinit(void); 509 void procinit_sysctl(void); 510 int proc_enterpgrp(struct proc *, pid_t, pid_t, bool); 511 void proc_leavepgrp(struct proc *); 512 void proc_sesshold(struct session *); 513 void proc_sessrele(struct session *); 514 void fixjobc(struct proc *, struct pgrp *, int); 515 516 int tsleep(wchan_t, pri_t, const char *, int); 517 int mtsleep(wchan_t, pri_t, const char *, int, kmutex_t *); 518 void wakeup(wchan_t); 519 int kpause(const char *, bool, int, kmutex_t *); 520 void exit1(struct lwp *, int, int) __dead; 521 int kill1(struct lwp *l, pid_t pid, ksiginfo_t *ksi, register_t *retval); 522 int do_sys_wait(int *, int *, int, struct rusage *); 523 int do_sys_waitid(idtype_t, id_t, int *, int *, int, struct wrusage *, 524 siginfo_t *); 525 526 struct proc *proc_alloc(void); 527 void proc0_init(void); 528 pid_t proc_alloc_pid(struct proc *); 529 void proc_free_pid(pid_t); 530 pid_t proc_alloc_lwpid(struct proc *, struct lwp *); 531 void proc_free_lwpid(struct proc *, pid_t); 532 void proc_free_mem(struct proc *); 533 void exit_lwps(struct lwp *l); 534 int fork1(struct lwp *, int, int, void *, size_t, 535 void (*)(void *), void *, register_t *); 536 int pgid_in_session(struct proc *, pid_t); 537 void cpu_lwp_fork(struct lwp *, struct lwp *, void *, size_t, 538 void (*)(void *), void *); 539 void cpu_lwp_free(struct lwp *, int); 540 void cpu_lwp_free2(struct lwp *); 541 void cpu_spawn_return(struct lwp*); 542 543 #ifdef __HAVE_SYSCALL_INTERN 544 void syscall_intern(struct proc *); 545 #endif 546 547 void md_child_return(struct lwp *); 548 void child_return(void *); 549 550 int proc_isunder(struct proc *, struct lwp *); 551 int proc_uidmatch(kauth_cred_t, kauth_cred_t); 552 553 int proc_vmspace_getref(struct proc *, struct vmspace **); 554 void proc_crmod_leave(kauth_cred_t, kauth_cred_t, bool); 555 void proc_crmod_enter(void); 556 int proc_getauxv(struct proc *, void **, size_t *); 557 558 int proc_specific_key_create(specificdata_key_t *, specificdata_dtor_t); 559 void proc_specific_key_delete(specificdata_key_t); 560 void proc_initspecific(struct proc *); 561 void proc_finispecific(struct proc *); 562 void * proc_getspecific(struct proc *, specificdata_key_t); 563 void proc_setspecific(struct proc *, specificdata_key_t, void *); 564 int proc_compare(const struct proc *, const struct lwp *, 565 const struct proc *, const struct lwp *); 566 567 /* 568 * Special handlers for delivering EVFILT_PROC notifications. These 569 * exist to handle some of the special locking considerations around 570 * processes. 571 */ 572 void knote_proc_exec(struct proc *); 573 void knote_proc_fork(struct proc *, struct proc *); 574 void knote_proc_exit(struct proc *); 575 576 int proclist_foreach_call(struct proclist *, 577 int (*)(struct proc *, void *arg), void *); 578 579 static __inline struct proc * 580 _proclist_skipmarker(struct proc *p0) 581 { 582 struct proc *p = p0; 583 584 while (p != NULL && p->p_flag & PK_MARKER) 585 p = LIST_NEXT(p, p_list); 586 587 return p; 588 } 589 590 #define PROC_PTRSZ(p) (((p)->p_flag & PK_32) ? sizeof(int) : sizeof(void *)) 591 #define PROC_REGSZ(p) (((p)->p_flag & PK_32) ? \ 592 sizeof(process_reg32) : sizeof(struct reg)) 593 #define PROC_FPREGSZ(p) (((p)->p_flag & PK_32) ? \ 594 sizeof(process_fpreg32) : sizeof(struct fpreg)) 595 #define PROC_DBREGSZ(p) (((p)->p_flag & PK_32) ? \ 596 sizeof(process_dbreg32) : sizeof(struct dbreg)) 597 598 #ifndef PROC_MACHINE_ARCH 599 #define PROC_MACHINE_ARCH(p) machine_arch 600 #endif 601 602 /* 603 * PROCLIST_FOREACH: iterate on the given proclist, skipping PK_MARKER ones. 604 */ 605 #define PROCLIST_FOREACH(var, head) \ 606 for ((var) = LIST_FIRST(head); \ 607 ((var) = _proclist_skipmarker(var)) != NULL; \ 608 (var) = LIST_NEXT(var, p_list)) 609 610 #ifdef KSTACK_CHECK_MAGIC 611 void kstack_setup_magic(const struct lwp *); 612 void kstack_check_magic(const struct lwp *); 613 #else 614 #define kstack_setup_magic(x) 615 #define kstack_check_magic(x) 616 #endif 617 618 extern struct emul emul_netbsd; 619 620 #endif /* _KERNEL */ 621 622 /* 623 * Kernel stack parameters. 624 * 625 * KSTACK_LOWEST_ADDR: return the lowest address of the LWP's kernel stack, 626 * excluding red-zone. 627 * 628 * KSTACK_SIZE: the size kernel stack for a LWP, excluding red-zone. 629 * 630 * if <machine/proc.h> provides the MD definition, it will be used. 631 */ 632 #ifndef KSTACK_LOWEST_ADDR 633 #define KSTACK_LOWEST_ADDR(l) ((void *)ALIGN((struct pcb *)((l)->l_addr) + 1)) 634 #endif 635 #ifndef KSTACK_SIZE 636 #define KSTACK_SIZE (USPACE - ALIGN(sizeof(struct pcb))) 637 #endif 638 639 #endif /* _KMEMUSER || _KERNEL */ 640 641 #endif /* !_SYS_PROC_H_ */ 642
Indexes created Sat Sep 20 22:09:52 GMT 2025