1/* 2 * Copyright (c) 2000-2010 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */ 29/*- 30 * Copyright (c) 1986, 1989, 1991, 1993 31 * The Regents of the University of California. All rights reserved. 32 * (c) UNIX System Laboratories, Inc. 33 * All or some portions of this file are derived from material licensed 34 * to the University of California by American Telephone and Telegraph 35 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 36 * the permission of UNIX System Laboratories, Inc. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)proc_internal.h 8.15 (Berkeley) 5/19/95 67 */ 68/* 69 * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce 70 * support for mandatory and extensible security protections. This notice 71 * is included in support of clause 2.2 (b) of the Apple Public License, 72 * Version 2.0. 73 */ 74 75#ifndef _SYS_PROC_INTERNAL_H_ 76#define _SYS_PROC_INTERNAL_H_ 77 78#include <libkern/OSAtomic.h> 79#include <sys/proc.h> 80__BEGIN_DECLS 81#include <kern/locks.h> 82#if PSYNCH 83#include <kern/thread_call.h> 84#endif /* PSYNCH */ 85__END_DECLS 86 87#if DEBUG 88#define __PROC_INTERNAL_DEBUG 1 89#endif 90 91/* 92 * The short form for various locks that protect fields in the data structures. 93 * PL = Process Lock 94 * PGL = Process Group Lock 95 * PFDL = Process File Desc Lock 96 * PSL = Process Spin Lock 97 * PPL = Parent Process Lock (planed for later usage) 98 * LL = List Lock 99 * SL = Session Lock 100*/ 101struct label; 102 103/* 104 * Added by SPARTA, Inc. 105 */ 106/* 107 * Login context. 108 */ 109struct lctx { 110 LIST_ENTRY(lctx) lc_list; /* List of all login contexts. */ 111 LIST_HEAD(, proc) lc_members; /* Pointer to lc members. */ 112 int lc_mc; /* Member Count. */ 113 pid_t lc_id; /* Login context ID. */ 114 lck_mtx_t lc_mtx; /* Mutex to protect members */ 115 116 struct label *lc_label; /* Login context MAC label. */ 117}; 118 119/* 120 * One structure allocated per session. 121 */ 122struct session { 123 int s_count; /* Ref cnt; pgrps in session. (LL) */ 124 struct proc * s_leader; /* Session leader.(static) */ 125 struct vnode * s_ttyvp; /* Vnode of controlling terminal.(SL) */ 126 int s_ttyvid; /* Vnode id of the controlling terminal (SL) */ 127 struct tty * s_ttyp; /* Controlling terminal. (SL + ttyvp != NULL) */ 128 pid_t s_ttypgrpid; /* tty's pgrp id */ 129 pid_t s_sid; /* Session ID (static) */ 130 char s_login[MAXLOGNAME]; /* Setlogin() name.(SL) */ 131 int s_flags; /* Session flags (s_mlock) */ 132 LIST_ENTRY(session) s_hash; /* Hash chain.(LL) */ 133 lck_mtx_t s_mlock; /* mutex lock to protect session */ 134 int s_listflags; 135}; 136 137#define SESSION_NULL (struct session *)0 138 139/* 140 * accessor for s_ttyp which treats it as invalid if s_ttyvp is not valid; 141 * note that s_ttyp is not a reference in the session structre, so it can 142 * become invalid out from under the session if the device is closed, without 143 * this protection. We can't safely make it into a reference without reflexive 144 * close notification of tty devices through cdevsw[]. 145 * 146 * NB: <sys/tty.h> is not in scope and there is not typedef type enforcement, 147 * or '0' below would be 'TTY_NULL'. 148 */ 149#define SESSION_TP(sp) (((sp)->s_ttyvp != 0) ? (sp)->s_ttyp : 0) 150 151/* 152 * Session flags; used to tunnel information to lower layers and line 153 * disciplines, etc. 154 */ 155#define S_DEFAULT 0x00000000 /* No flags set */ 156#define S_NOCTTY 0x00000001 /* Do not associate controlling tty */ 157 158 159#define S_LIST_TERM 1 /* marked for termination */ 160#define S_LIST_DEAD 2 /* already dead */ 161/* 162 * One structure allocated per process group. 163 */ 164struct pgrp { 165 LIST_ENTRY(pgrp) pg_hash; /* Hash chain. (LL) */ 166 LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members. (PGL) */ 167 struct session * pg_session; /* Pointer to session. (LL ) */ 168 pid_t pg_id; /* Pgrp id. (static) */ 169 int pg_jobc; /* # procs qualifying pgrp for job control (PGL) */ 170 int pg_membercnt; /* Number of processes in the pgrocess group (PGL) */ 171 int pg_refcount; /* number of current iterators (LL) */ 172 unsigned int pg_listflags; /* (LL) */ 173 lck_mtx_t pg_mlock; /* mutex lock to protect pgrp */ 174}; 175 176#define PGRP_FLAG_TERMINATE 1 177#define PGRP_FLAG_WAITTERMINATE 2 178#define PGRP_FLAG_DEAD 4 179#define PGRP_FLAG_ITERABEGIN 8 180#define PGRP_FLAG_ITERWAIT 0x10 181 182#define PGRP_NULL (struct pgrp *)0 183struct proc; 184 185#define PROC_NULL (struct proc *)0 186 187#define PROC_UPDATE_CREDS_ONPROC(p) { \ 188 p->p_uid = kauth_cred_getuid(p->p_ucred); \ 189 p->p_gid = kauth_cred_getgid(p->p_ucred); \ 190 p->p_ruid = kauth_cred_getruid(p->p_ucred); \ 191 p->p_rgid = kauth_cred_getrgid(p->p_ucred); \ 192 p->p_svuid = kauth_cred_getsvuid(p->p_ucred); \ 193 p->p_svgid = kauth_cred_getsvgid(p->p_ucred); \ 194 } 195/* 196 * Description of a process. 197 * 198 * This structure contains the information needed to manage a thread of 199 * control, known in UN*X as a process; it has references to substructures 200 * containing descriptions of things that the process uses, but may share 201 * with related processes. The process structure and the substructures 202 * are always addressible except for those marked "(PROC ONLY)" below, 203 * which might be addressible only on a processor on which the process 204 * is running. 205 */ 206struct proc { 207 LIST_ENTRY(proc) p_list; /* List of all processes. */ 208 209 pid_t p_pid; /* Process identifier. (static)*/ 210 void * task; /* corresponding task (static)*/ 211 struct proc * p_pptr; /* Pointer to parent process.(LL) */ 212 pid_t p_ppid; /* process's parent pid number */ 213 pid_t p_pgrpid; /* process group id of the process (LL)*/ 214 uid_t p_uid; 215 gid_t p_gid; 216 uid_t p_ruid; 217 gid_t p_rgid; 218 uid_t p_svuid; 219 gid_t p_svgid; 220 uint64_t p_uniqueid; /* process uniqe ID */ 221 222 lck_mtx_t p_mlock; /* mutex lock for proc */ 223 224 char p_stat; /* S* process status. (PL)*/ 225 char p_shutdownstate; 226 char p_kdebug; /* P_KDEBUG eq (CC)*/ 227 char p_btrace; /* P_BTRACE eq (CC)*/ 228 229 LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp.(PGL) */ 230 LIST_ENTRY(proc) p_sibling; /* List of sibling processes. (LL)*/ 231 LIST_HEAD(, proc) p_children; /* Pointer to list of children. (LL)*/ 232 TAILQ_HEAD( , uthread) p_uthlist; /* List of uthreads (PL) */ 233 234 LIST_ENTRY(proc) p_hash; /* Hash chain. (LL)*/ 235 TAILQ_HEAD( ,eventqelt) p_evlist; /* (PL) */ 236 237 lck_mtx_t p_fdmlock; /* proc lock to protect fdesc */ 238 239 /* substructures: */ 240 kauth_cred_t p_ucred; /* Process owner's identity. (PL) */ 241 struct filedesc *p_fd; /* Ptr to open files structure. (PFDL) */ 242 struct pstats *p_stats; /* Accounting/statistics (PL). */ 243 struct plimit *p_limit; /* Process limits.(PL) */ 244 245 struct sigacts *p_sigacts; /* Signal actions, state (PL) */ 246 int p_siglist; /* signals captured back from threads */ 247 lck_spin_t p_slock; /* spin lock for itimer/profil protection */ 248 249#define p_rlimit p_limit->pl_rlimit 250 251 struct plimit *p_olimit; /* old process limits - not inherited by child (PL) */ 252 unsigned int p_flag; /* P_* flags. (atomic bit ops) */ 253 unsigned int p_lflag; /* local flags (PL) */ 254 unsigned int p_listflag; /* list flags (LL) */ 255 unsigned int p_ladvflag; /* local adv flags (atomic) */ 256 int p_refcount; /* number of outstanding users(LL) */ 257 int p_childrencnt; /* children holding ref on parent (LL) */ 258 int p_parentref; /* children lookup ref on parent (LL) */ 259 260 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 261 u_int p_xstat; /* Exit status for wait; also stop signal. */ 262 263#ifdef _PROC_HAS_SCHEDINFO_ 264 /* may need cleanup, not used */ 265 u_int p_estcpu; /* Time averaged value of p_cpticks.(used by aio and proc_comapre) */ 266 fixpt_t p_pctcpu; /* %cpu for this process during p_swtime (used by aio)*/ 267 u_int p_slptime; /* used by proc_compare */ 268#endif /* _PROC_HAS_SCHEDINFO_ */ 269 270 struct itimerval p_realtimer; /* Alarm timer. (PSL) */ 271 struct timeval p_rtime; /* Real time.(PSL) */ 272 struct itimerval p_vtimer_user; /* Virtual timers.(PSL) */ 273 struct itimerval p_vtimer_prof; /* (PSL) */ 274 275 struct timeval p_rlim_cpu; /* Remaining rlim cpu value.(PSL) */ 276 int p_debugger; /* NU 1: can exec set-bit programs if suser */ 277 boolean_t sigwait; /* indication to suspend (PL) */ 278 void *sigwait_thread; /* 'thread' holding sigwait(PL) */ 279 void *exit_thread; /* Which thread is exiting(PL) */ 280 int p_vforkcnt; /* number of outstanding vforks(PL) */ 281 void * p_vforkact; /* activation running this vfork proc)(static) */ 282 int p_fpdrainwait; /* (PFDL) */ 283 pid_t p_contproc; /* last PID to send us a SIGCONT (PL) */ 284 285 /* Following fields are info from SIGCHLD (PL) */ 286 pid_t si_pid; /* (PL) */ 287 u_int si_status; /* (PL) */ 288 u_int si_code; /* (PL) */ 289 uid_t si_uid; /* (PL) */ 290 291 void * vm_shm; /* (SYSV SHM Lock) for sysV shared memory */ 292 293#if CONFIG_DTRACE 294 user_addr_t p_dtrace_argv; /* (write once, read only after that) */ 295 user_addr_t p_dtrace_envp; /* (write once, read only after that) */ 296 lck_mtx_t p_dtrace_sprlock; /* sun proc lock emulation */ 297 int p_dtrace_probes; /* (PL) are there probes for this proc? */ 298 u_int p_dtrace_count; /* (sprlock) number of DTrace tracepoints */ 299 uint8_t p_dtrace_stop; /* indicates a DTrace-desired stop */ 300 struct dtrace_ptss_page* p_dtrace_ptss_pages; /* (sprlock) list of user ptss pages */ 301 struct dtrace_ptss_page_entry* p_dtrace_ptss_free_list; /* (atomic) list of individual ptss entries */ 302 struct dtrace_helpers* p_dtrace_helpers; /* (dtrace_lock) DTrace per-proc private */ 303 struct dof_ioctl_data* p_dtrace_lazy_dofs; /* (sprlock) unloaded dof_helper_t's */ 304#endif /* CONFIG_DTRACE */ 305 306/* XXXXXXXXXXXXX BCOPY'ed on fork XXXXXXXXXXXXXXXX */ 307/* The following fields are all copied upon creation in fork. */ 308#define p_startcopy p_argslen 309 310 u_int p_argslen; /* Length of process arguments. */ 311 int p_argc; /* saved argc for sysctl_procargs() */ 312 user_addr_t user_stack; /* where user stack was allocated */ 313 struct vnode *p_textvp; /* Vnode of executable. */ 314 off_t p_textoff; /* offset in executable vnode */ 315 316 sigset_t p_sigmask; /* DEPRECATED */ 317 sigset_t p_sigignore; /* Signals being ignored. (PL) */ 318 sigset_t p_sigcatch; /* Signals being caught by user.(PL) */ 319 320 u_char p_priority; /* (NU) Process priority. */ 321 u_char p_resv0; /* (NU) User-priority based on p_cpu and p_nice. */ 322 char p_nice; /* Process "nice" value.(PL) */ 323 u_char p_resv1; /* (NU) User-priority based on p_cpu and p_nice. */ 324 325#if CONFIG_MACF 326 int p_mac_enforce; /* MAC policy enforcement control */ 327#endif 328 329 char p_comm[MAXCOMLEN+1]; 330 char p_name[(2*MAXCOMLEN)+1]; /* PL */ 331 332 struct pgrp *p_pgrp; /* Pointer to process group. (LL) */ 333 uint32_t p_csflags; /* flags for codesign (PL) */ 334 uint32_t p_pcaction; /* action for process control on starvation */ 335 uint8_t p_uuid[16]; /* from LC_UUID load command */ 336 337#if !CONFIG_EMBEDDED 338#define PROC_LEGACY_BEHAVIOR_IOTHROTTLE (0x00000001) 339 uint32_t p_legacy_behavior; 340#endif 341 342/* End area that is copied on creation. */ 343/* XXXXXXXXXXXXX End of BCOPY'ed on fork (AIOLOCK)XXXXXXXXXXXXXXXX */ 344#define p_endcopy p_aio_total_count 345 int p_aio_total_count; /* all allocated AIO requests for this proc */ 346 int p_aio_active_count; /* all unfinished AIO requests for this proc */ 347 TAILQ_HEAD( , aio_workq_entry ) p_aio_activeq; /* active async IO requests */ 348 TAILQ_HEAD( , aio_workq_entry ) p_aio_doneq; /* completed async IO requests */ 349 350 struct klist p_klist; /* knote list (PL ?)*/ 351 352 struct rusage *p_ru; /* Exit information. (PL) */ 353 int p_sigwaitcnt; 354 thread_t p_signalholder; 355 thread_t p_transholder; 356 357 /* DEPRECATE following field */ 358 u_short p_acflag; /* Accounting flags. */ 359 360 struct lctx *p_lctx; /* Pointer to login context. */ 361 LIST_ENTRY(proc) p_lclist; /* List of processes in lctx. */ 362 user_addr_t p_threadstart; /* pthread start fn */ 363 user_addr_t p_wqthread; /* pthread workqueue fn */ 364 int p_pthsize; /* pthread size */ 365 user_addr_t p_targconc; /* target concurrency ptr */ 366 void * p_wqptr; /* workq ptr */ 367 int p_wqsize; /* allocated size */ 368 boolean_t p_wqiniting; /* semaphore to serialze wq_open */ 369 lck_spin_t p_wqlock; /* lock to protect work queue */ 370 struct timeval p_start; /* starting time */ 371 void * p_rcall; 372 int p_ractive; 373 int p_idversion; /* version of process identity */ 374 void * p_pthhash; /* pthread waitqueue hash */ 375#if DIAGNOSTIC 376 unsigned int p_fdlock_pc[4]; 377 unsigned int p_fdunlock_pc[4]; 378#if SIGNAL_DEBUG 379 unsigned int lockpc[8]; 380 unsigned int unlockpc[8]; 381#endif /* SIGNAL_DEBUG */ 382#endif /* DIAGNOSTIC */ 383 uint64_t p_dispatchqueue_offset; 384#if VM_PRESSURE_EVENTS 385 struct timeval vm_pressure_last_notify_tstamp; 386#endif 387 int p_dirty; /* dirty state */ 388}; 389 390#define PGRPID_DEAD 0xdeaddead 391 392/* p_listflag */ 393#define P_LIST_DRAIN 0x00000001 394#define P_LIST_DRAINWAIT 0x00000002 395#define P_LIST_DRAINED 0x00000004 396#define P_LIST_DEAD 0x00000008 397#define P_LIST_WAITING 0x00000010 398#define P_LIST_EXITED 0x00000040 399#define P_LIST_CHILDDRSTART 0x00000080 400#define P_LIST_CHILDDRAINED 0x00000100 401#define P_LIST_CHILDDRWAIT 0x00000200 402#define P_LIST_CHILDLKWAIT 0x00000400 403#define P_LIST_DEADPARENT 0x00000800 404#define P_LIST_PARENTREFWAIT 0x00001000 405#define P_LIST_INCREATE 0x00002000 406/* 0x4000 & 0x8000 Not used */ 407#define P_LIST_INHASH 0x00010000 /* process is in hash */ 408#define P_LIST_INPGRP 0x00020000 /* process is in pgrp */ 409#define P_LIST_PGRPTRANS 0x00040000 /* pgrp is getting replaced */ 410#define P_LIST_PGRPTRWAIT 0x00080000 /* wait for pgrp replacement */ 411#define P_LIST_EXITCOUNT 0x00100000 /* counted for process exit */ 412 413 414/* local flags */ 415#define P_LDELAYTERM 0x00000001 /* */ 416#define P_LNOZOMB 0x00000002 /* */ 417#define P_LTERM 0x00000004 /* */ 418#define P_LEXIT 0x00000008 /* */ 419#define P_LPEXIT 0x00000010 420#define P_LTRANSCOMMIT 0x00000020 /* process is committed to trans */ 421#define P_LINTRANSIT 0x00000040 /* process in exec or in creation */ 422#define P_LTRANSWAIT 0x00000080 /* waiting for trans to complete */ 423#define P_LVFORK 0x00000100 /* */ 424#define P_LINVFORK 0x00000200 /* */ 425#define P_LTRACED 0x00000400 /* */ 426#define P_LSIGEXC 0x00000800 /* */ 427#define P_LNOATTACH 0x00001000 /* */ 428#define P_LPPWAIT 0x00002000 /* */ 429#define P_LKQWDRAIN 0x00004000 430#define P_LKQWDRAINWAIT 0x00008000 431#define P_LKQWDEAD 0x00010000 432#define P_LLIMCHANGE 0x00020000 433#define P_LLIMWAIT 0x00040000 434#define P_LWAITED 0x00080000 435#define P_LINSIGNAL 0x00100000 436#define P_UNUSED 0x00200000 /* Unused */ 437#define P_LRAGE_VNODES 0x00400000 438#define P_LREGISTER 0x00800000 /* thread start fns registered */ 439#define P_LVMRSRCOWNER 0x01000000 /* can handle the resource ownership of */ 440#define P_LPTERMINATE 0x02000000 /* can handle the resource ownership of */ 441 442/* Process control state for resource starvation */ 443#define P_PCTHROTTLE 1 444#define P_PCSUSP 2 445#define P_PCKILL 3 446#define P_PCMAX 3 447 448/* Process control action state on resrouce starvation */ 449#define PROC_ACTION_MASK 0xffff0000; 450#define PROC_CONTROL_STATE(p) (p->p_pcaction & P_PCMAX) 451#define PROC_ACTION_STATE(p) ((p->p_pcaction >> 16) & P_PCMAX) 452#define PROC_SETACTION_STATE(p) (p->p_pcaction = (PROC_CONTROL_STATE(p) | (PROC_CONTROL_STATE(p) << 16))) 453#define PROC_RESETACTION_STATE(p) (p->p_pcaction = PROC_CONTROL_STATE(p)) 454 455/* additional process flags */ 456#define P_LADVLOCK 0x01 457 458/* defns for proc_iterate */ 459#define PROC_ALLPROCLIST 1 /* walk the allproc list (procs not exited yet) */ 460#define PROC_ZOMBPROCLIST 2 /* walk the zombie list */ 461#define PROC_NOWAITTRANS 4 /* do not wait for transitions (checkdirs only) */ 462 463/* defns for pgrp_iterate */ 464#define PGRP_DROPREF 1 465#define PGRP_BLOCKITERATE 2 466 467/* return values of the proc iteration callback routine */ 468#define PROC_RETURNED 0 469#define PROC_RETURNED_DONE 1 470#define PROC_CLAIMED 2 471#define PROC_CLAIMED_DONE 3 472 473/* process creation arguments */ 474#define PROC_CREATE_FORK 0 /* independent child (running) */ 475#define PROC_CREATE_SPAWN 1 /* independent child (suspended) */ 476#define PROC_CREATE_VFORK 2 /* child borrows context */ 477 478 479/* LP64 version of extern_proc. all pointers 480 * grow when we're dealing with a 64-bit process. 481 * WARNING - keep in sync with extern_proc 482 * but use native alignment of 64-bit process. 483 */ 484 485#ifdef KERNEL 486#include <sys/time.h> /* user_timeval, user_itimerval */ 487 488#pragma pack(4) 489struct user32_extern_proc { 490 union { 491 struct { 492 uint32_t __p_forw; /* Doubly-linked run/sleep queue. */ 493 uint32_t __p_back; 494 } p_st1; 495 struct user32_timeval __p_starttime; /* process start time */ 496 } p_un; 497 uint32_t p_vmspace; /* Address space. */ 498 uint32_t p_sigacts; /* Signal actions, state (PROC ONLY). */ 499 int p_flag; /* P_* flags. */ 500 char p_stat; /* S* process status. */ 501 pid_t p_pid; /* Process identifier. */ 502 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 503 int p_dupfd; /* Sideways return value from fdopen. XXX */ 504 /* Mach related */ 505 uint32_t user_stack; /* where user stack was allocated */ 506 uint32_t exit_thread; /* XXX Which thread is exiting? */ 507 int p_debugger; /* allow to debug */ 508 boolean_t sigwait; /* indication to suspend */ 509 /* scheduling */ 510 u_int p_estcpu; /* Time averaged value of p_cpticks. */ 511 int p_cpticks; /* Ticks of cpu time. */ 512 fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ 513 uint32_t p_wchan; /* Sleep address. */ 514 uint32_t p_wmesg; /* Reason for sleep. */ 515 u_int p_swtime; /* Time swapped in or out. */ 516 u_int p_slptime; /* Time since last blocked. */ 517 struct user32_itimerval p_realtimer; /* Alarm timer. */ 518 struct user32_timeval p_rtime; /* Real time. */ 519 u_quad_t p_uticks; /* Statclock hits in user mode. */ 520 u_quad_t p_sticks; /* Statclock hits in system mode. */ 521 u_quad_t p_iticks; /* Statclock hits processing intr. */ 522 int p_traceflag; /* Kernel trace points. */ 523 uint32_t p_tracep; /* Trace to vnode. */ 524 int p_siglist; /* DEPRECATED */ 525 uint32_t p_textvp; /* Vnode of executable. */ 526 int p_holdcnt; /* If non-zero, don't swap. */ 527 sigset_t p_sigmask; /* DEPRECATED. */ 528 sigset_t p_sigignore; /* Signals being ignored. */ 529 sigset_t p_sigcatch; /* Signals being caught by user. */ 530 u_char p_priority; /* Process priority. */ 531 u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ 532 char p_nice; /* Process "nice" value. */ 533 char p_comm[MAXCOMLEN+1]; 534 uint32_t p_pgrp; /* Pointer to process group. */ 535 uint32_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */ 536 u_short p_xstat; /* Exit status for wait; also stop signal. */ 537 u_short p_acflag; /* Accounting flags. */ 538 uint32_t p_ru; /* Exit information. XXX */ 539}; 540#pragma pack() 541struct user64_extern_proc { 542 union { 543 struct { 544 user_addr_t __p_forw; /* Doubly-linked run/sleep queue. */ 545 user_addr_t __p_back; 546 } p_st1; 547 struct user64_timeval __p_starttime; /* process start time */ 548 } p_un; 549 user_addr_t p_vmspace; /* Address space. */ 550 user_addr_t p_sigacts; /* Signal actions, state (PROC ONLY). */ 551 int p_flag; /* P_* flags. */ 552 char p_stat; /* S* process status. */ 553 pid_t p_pid; /* Process identifier. */ 554 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 555 int p_dupfd; /* Sideways return value from fdopen. XXX */ 556 /* Mach related */ 557 user_addr_t user_stack __attribute((aligned(8))); /* where user stack was allocated */ 558 user_addr_t exit_thread; /* XXX Which thread is exiting? */ 559 int p_debugger; /* allow to debug */ 560 boolean_t sigwait; /* indication to suspend */ 561 /* scheduling */ 562 u_int p_estcpu; /* Time averaged value of p_cpticks. */ 563 int p_cpticks; /* Ticks of cpu time. */ 564 fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ 565 user_addr_t p_wchan __attribute((aligned(8))); /* Sleep address. */ 566 user_addr_t p_wmesg; /* Reason for sleep. */ 567 u_int p_swtime; /* Time swapped in or out. */ 568 u_int p_slptime; /* Time since last blocked. */ 569 struct user64_itimerval p_realtimer; /* Alarm timer. */ 570 struct user64_timeval p_rtime; /* Real time. */ 571 u_quad_t p_uticks; /* Statclock hits in user mode. */ 572 u_quad_t p_sticks; /* Statclock hits in system mode. */ 573 u_quad_t p_iticks; /* Statclock hits processing intr. */ 574 int p_traceflag; /* Kernel trace points. */ 575 user_addr_t p_tracep __attribute((aligned(8))); /* Trace to vnode. */ 576 int p_siglist; /* DEPRECATED */ 577 user_addr_t p_textvp __attribute((aligned(8))); /* Vnode of executable. */ 578 int p_holdcnt; /* If non-zero, don't swap. */ 579 sigset_t p_sigmask; /* DEPRECATED. */ 580 sigset_t p_sigignore; /* Signals being ignored. */ 581 sigset_t p_sigcatch; /* Signals being caught by user. */ 582 u_char p_priority; /* Process priority. */ 583 u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ 584 char p_nice; /* Process "nice" value. */ 585 char p_comm[MAXCOMLEN+1]; 586 user_addr_t p_pgrp __attribute((aligned(8))); /* Pointer to process group. */ 587 user_addr_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */ 588 u_short p_xstat; /* Exit status for wait; also stop signal. */ 589 u_short p_acflag; /* Accounting flags. */ 590 user_addr_t p_ru __attribute((aligned(8))); /* Exit information. XXX */ 591}; 592#endif /* KERNEL */ 593 594/* 595 * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, 596 * as it is used to represent "no process group". 597 */ 598extern int nprocs, maxproc; /* Current and max number of procs. */ 599extern int maxprocperuid; /* Current number of procs per uid */ 600__private_extern__ int hard_maxproc; /* hard limit */ 601extern unsigned int proc_shutdown_exitcount; 602 603#define PID_MAX 99999 604#define NO_PID 100000 605extern lck_mtx_t * proc_list_mlock; 606extern lck_mtx_t * proc_klist_mlock; 607 608#define BSD_SIMUL_EXECS 33 /* 32 , allow for rounding */ 609#define BSD_PAGEABLE_SIZE_PER_EXEC (NCARGS + PAGE_SIZE + PAGE_SIZE) /* page for apple vars, page for executable header */ 610extern int execargs_cache_size; 611extern int execargs_free_count; 612extern vm_offset_t * execargs_cache; 613 614#define SESS_LEADER(p, sessp) ((sessp)->s_leader == (p)) 615 616/* Lock and unlock a login context. */ 617#define LCTX_LOCK(lc) lck_mtx_lock(&(lc)->lc_mtx) 618#define LCTX_UNLOCK(lc) lck_mtx_unlock(&(lc)->lc_mtx) 619#define LCTX_LOCKED(lc) 620#define LCTX_LOCK_ASSERT(lc, type) 621#define ALLLCTX_LOCK lck_mtx_lock(&alllctx_lock) 622#define ALLLCTX_UNLOCK lck_mtx_unlock(&alllctx_lock) 623extern lck_mtx_t alllctx_lock; 624extern lck_grp_t * lctx_lck_grp; 625extern lck_grp_attr_t * lctx_lck_grp_attr; 626extern lck_attr_t * lctx_lck_attr; 627 628#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) 629extern LIST_HEAD(pidhashhead, proc) *pidhashtbl; 630extern u_long pidhash; 631 632#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) 633extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; 634extern u_long pgrphash; 635#define SESSHASH(sessid) (&sesshashtbl[(sessid) & sesshash]) 636extern LIST_HEAD(sesshashhead, session) *sesshashtbl; 637extern u_long sesshash; 638 639extern lck_grp_t * proc_lck_grp; 640#if CONFIG_FINE_LOCK_GROUPS 641extern lck_grp_t * proc_mlock_grp; 642extern lck_grp_t * proc_fdmlock_grp; 643extern lck_grp_t * proc_slock_grp; 644#endif 645extern lck_grp_attr_t * proc_lck_grp_attr; 646extern lck_attr_t * proc_lck_attr; 647 648LIST_HEAD(proclist, proc); 649extern struct proclist allproc; /* List of all processes. */ 650extern struct proclist zombproc; /* List of zombie processes. */ 651extern struct proc *initproc; 652extern void procinit(void) __attribute__((section("__TEXT, initcode"))); 653extern void proc_lock(struct proc *); 654extern void proc_unlock(struct proc *); 655extern void proc_spinlock(struct proc *); 656extern void proc_spinunlock(struct proc *); 657extern void proc_list_lock(void); 658extern void proc_list_unlock(void); 659extern void proc_klist_lock(void); 660extern void proc_klist_unlock(void); 661extern void proc_fdlock(struct proc *); 662extern void proc_fdlock_spin(struct proc *); 663extern void proc_fdunlock(struct proc *); 664extern void proc_fdlock_assert(proc_t p, int assertflags); 665__private_extern__ int proc_core_name(const char *name, uid_t uid, pid_t pid, 666 char *cr_name, size_t cr_name_len); 667extern int isinferior(struct proc *, struct proc *); 668__private_extern__ struct proc *pzfind(pid_t); /* Find zombie by id. */ 669__private_extern__ struct proc *proc_find_zombref(pid_t); /* Find zombie by id. */ 670__private_extern__ void proc_drop_zombref(struct proc * p); /* Find zombie by id. */ 671 672 673extern struct lctx *lcfind(pid_t); /* Find a login context by id */ 674extern struct lctx *lccreate(void); /* Create a new login context */ 675 676extern int chgproccnt(uid_t uid, int diff); 677extern void enterlctx(struct proc *p, struct lctx *l, int create); 678extern void pinsertchild(struct proc *parent, struct proc *child); 679extern int enterpgrp(struct proc *p, pid_t pgid, int mksess); 680extern void fixjobc(struct proc *p, struct pgrp *pgrp, int entering); 681extern int inferior(struct proc *p); 682extern int leavepgrp(struct proc *p); 683extern void leavelctx(struct proc *p); 684extern void resetpriority(struct proc *); 685extern void setrunnable(struct proc *); 686extern void setrunqueue(struct proc *); 687extern int sleep(void *chan, int pri); 688extern int tsleep0(void *chan, int pri, const char *wmesg, int timo, int (*continuation)(int)); 689extern int tsleep1(void *chan, int pri, const char *wmesg, u_int64_t abstime, int (*continuation)(int)); 690extern int msleep0(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, int timo, int (*continuation)(int)); 691extern void vfork_return(struct proc *child, int32_t *retval, int rval); 692extern int exit1(struct proc *, int, int *); 693extern int exit1_internal(struct proc *, int, int *, boolean_t, boolean_t); 694extern int fork1(proc_t, thread_t *, int); 695extern void vfork_exit_internal(struct proc *p, int rv, int forced); 696extern void proc_reparentlocked(struct proc *child, struct proc * newparent, int cansignal, int locked); 697extern int pgrp_iterate(struct pgrp * pgrp, int flags, int (*callout)(proc_t , void *), void *arg, int (*filterfn)(proc_t , void *), void *filterarg); 698extern int proc_iterate(int flags, int (*callout)(proc_t , void *), void *arg, int (*filterfn)(proc_t , void *), void *filterarg); 699extern int proc_rebootscan(int (*callout)(proc_t , void *), void *arg, int (*filterfn)(proc_t , void *), void *filterarg); 700extern int proc_childrenwalk(proc_t p, int (*callout)(proc_t , void *), void *arg); 701extern proc_t proc_findinternal(int pid, int funneled); 702extern proc_t proc_findthread(thread_t thread); 703extern void proc_refdrain(proc_t); 704extern void proc_childdrainlocked(proc_t); 705extern void proc_childdrainstart(proc_t); 706extern void proc_childdrainend(proc_t); 707extern void proc_checkdeadrefs(proc_t); 708struct proc *pfind_locked(pid_t); 709extern struct pgrp *pgfind(pid_t); 710extern void pg_rele(struct pgrp * pgrp); 711extern struct session * session_find_internal(pid_t sessid); 712extern struct pgrp * proc_pgrp(proc_t); 713extern struct pgrp * tty_pgrp(struct tty * tp); 714extern struct pgrp * pgfind_internal(pid_t); 715extern struct session * proc_session(proc_t); 716extern void pgrp_lock(struct pgrp * pgrp); 717extern void pgrp_unlock(struct pgrp * pgrp); 718extern void session_lock(struct session * sess); 719extern void session_unlock(struct session * sess); 720extern struct session * pgrp_session(struct pgrp * pgrp); 721extern void session_rele(struct session *sess); 722extern int isbackground(proc_t p, struct tty *tp); 723extern proc_t proc_parent(proc_t); 724extern proc_t proc_parentholdref(proc_t); 725extern int proc_parentdropref(proc_t, int); 726int itimerfix(struct timeval *tv); 727int itimerdecr(struct proc * p, struct itimerval *itp, int usec); 728void proc_signalstart(struct proc *, int locked); 729void proc_signalend(struct proc *, int locked); 730int proc_transstart(struct proc *, int locked); 731void proc_transcommit(struct proc *, int locked); 732void proc_transend(struct proc *, int locked); 733int proc_transwait(struct proc *, int locked); 734void proc_rele_locked(struct proc * p); 735struct proc *proc_ref_locked(struct proc * p); 736void proc_knote(struct proc * p, long hint); 737void proc_knote_drain(struct proc *p); 738void workqueue_init_lock(proc_t p); 739void workqueue_destroy_lock(proc_t p); 740void proc_setregister(proc_t p); 741void proc_resetregister(proc_t p); 742/* returns the first thread_t in the process, or NULL XXX for NFS, DO NOT USE */ 743thread_t proc_thread(proc_t); 744extern int proc_pendingsignals(proc_t, sigset_t); 745int proc_getpcontrol(int pid, int * pcontrolp); 746int proc_dopcontrol(proc_t p, void *unused_arg); 747int proc_resetpcontrol(int pid); 748extern void proc_removethrottle(proc_t); 749#if PSYNCH 750void pth_proc_hashinit(proc_t); 751void pth_proc_hashdelete(proc_t); 752void pth_global_hashinit(void); 753extern thread_call_t psynch_thcall; 754void psynch_wq_cleanup(__unused void * param, __unused void * param1); 755extern lck_mtx_t * pthread_list_mlock; 756#endif /* PSYNCH */ 757struct uthread * current_uthread(void); 758#endif /* !_SYS_PROC_INTERNAL_H_ */ 759