1/* 2 * Copyright (c) 2000-2006 Apple Computer, 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.h 8.15 (Berkeley) 5/19/95 67 */ 68 69#ifndef _SYS_PROC_H_ 70#define _SYS_PROC_H_ 71 72#include <sys/appleapiopts.h> 73#include <sys/cdefs.h> 74#include <sys/select.h> /* For struct selinfo. */ 75#include <sys/queue.h> 76#include <sys/lock.h> 77#include <sys/param.h> 78#include <sys/event.h> 79#ifdef KERNEL 80#include <sys/kernel_types.h> 81#endif 82#include <mach/boolean.h> 83 84#if defined(XNU_KERNEL_PRIVATE) || !defined(KERNEL) 85 86struct session; 87struct pgrp; 88struct proc; 89 90/* Exported fields for kern sysctls */ 91struct extern_proc { 92 union { 93 struct { 94 struct proc *__p_forw; /* Doubly-linked run/sleep queue. */ 95 struct proc *__p_back; 96 } p_st1; 97 struct timeval __p_starttime; /* process start time */ 98 } p_un; 99#define p_forw p_un.p_st1.__p_forw 100#define p_back p_un.p_st1.__p_back 101#define p_starttime p_un.__p_starttime 102 struct vmspace *p_vmspace; /* Address space. */ 103 struct sigacts *p_sigacts; /* Signal actions, state (PROC ONLY). */ 104 int p_flag; /* P_* flags. */ 105 char p_stat; /* S* process status. */ 106 pid_t p_pid; /* Process identifier. */ 107 pid_t p_oppid; /* Save parent pid during ptrace. XXX */ 108 int p_dupfd; /* Sideways return value from fdopen. XXX */ 109 /* Mach related */ 110 caddr_t user_stack; /* where user stack was allocated */ 111 void *exit_thread; /* XXX Which thread is exiting? */ 112 int p_debugger; /* allow to debug */ 113 boolean_t sigwait; /* indication to suspend */ 114 /* scheduling */ 115 u_int p_estcpu; /* Time averaged value of p_cpticks. */ 116 int p_cpticks; /* Ticks of cpu time. */ 117 fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ 118 void *p_wchan; /* Sleep address. */ 119 char *p_wmesg; /* Reason for sleep. */ 120 u_int p_swtime; /* Time swapped in or out. */ 121 u_int p_slptime; /* Time since last blocked. */ 122 struct itimerval p_realtimer; /* Alarm timer. */ 123 struct timeval p_rtime; /* Real time. */ 124 u_quad_t p_uticks; /* Statclock hits in user mode. */ 125 u_quad_t p_sticks; /* Statclock hits in system mode. */ 126 u_quad_t p_iticks; /* Statclock hits processing intr. */ 127 int p_traceflag; /* Kernel trace points. */ 128 struct vnode *p_tracep; /* Trace to vnode. */ 129 int p_siglist; /* DEPRECATED. */ 130 struct vnode *p_textvp; /* Vnode of executable. */ 131 int p_holdcnt; /* If non-zero, don't swap. */ 132 sigset_t p_sigmask; /* DEPRECATED. */ 133 sigset_t p_sigignore; /* Signals being ignored. */ 134 sigset_t p_sigcatch; /* Signals being caught by user. */ 135 u_char p_priority; /* Process priority. */ 136 u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ 137 char p_nice; /* Process "nice" value. */ 138 char p_comm[MAXCOMLEN+1]; 139 struct pgrp *p_pgrp; /* Pointer to process group. */ 140 struct user *p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */ 141 u_short p_xstat; /* Exit status for wait; also stop signal. */ 142 u_short p_acflag; /* Accounting flags. */ 143 struct rusage *p_ru; /* Exit information. XXX */ 144}; 145 146 147/* Status values. */ 148#define SIDL 1 /* Process being created by fork. */ 149#define SRUN 2 /* Currently runnable. */ 150#define SSLEEP 3 /* Sleeping on an address. */ 151#define SSTOP 4 /* Process debugging or suspension. */ 152#define SZOMB 5 /* Awaiting collection by parent. */ 153 154/* These flags are kept in extern_proc.p_flag. */ 155#define P_ADVLOCK 0x00000001 /* Process may hold POSIX adv. lock */ 156#define P_CONTROLT 0x00000002 /* Has a controlling terminal */ 157#define P_LP64 0x00000004 /* Process is LP64 */ 158#define P_NOCLDSTOP 0x00000008 /* No SIGCHLD when children stop */ 159 160#define P_PPWAIT 0x00000010 /* Parent waiting for chld exec/exit */ 161#define P_PROFIL 0x00000020 /* Has started profiling */ 162#define P_SELECT 0x00000040 /* Selecting; wakeup/waiting danger */ 163#define P_CONTINUED 0x00000080 /* Process was stopped and continued */ 164 165#define P_SUGID 0x00000100 /* Has set privileges since last exec */ 166#define P_SYSTEM 0x00000200 /* Sys proc: no sigs, stats or swap */ 167#define P_TIMEOUT 0x00000400 /* Timing out during sleep */ 168#define P_TRACED 0x00000800 /* Debugged process being traced */ 169 170#define P_DISABLE_ASLR 0x00001000 /* Disable address space layout randomization */ 171#define P_WEXIT 0x00002000 /* Working on exiting */ 172#define P_EXEC 0x00004000 /* Process called exec. */ 173 174/* Should be moved to machine-dependent areas. */ 175#define P_OWEUPC 0x00008000 /* Owe process an addupc() call at next ast. */ 176 177#define P_AFFINITY 0x00010000 /* xxx */ 178#define P_TRANSLATED 0x00020000 /* xxx */ 179#define P_CLASSIC P_TRANSLATED /* xxx */ 180/* 181#define P_FSTRACE 0x10000 / * tracing via file system (elsewhere?) * / 182#define P_SSTEP 0x20000 / * process needs single-step fixup ??? * / 183*/ 184 185#define P_DELAYIDLESLEEP 0x00040000 /* Process is marked to delay idle sleep on disk IO */ 186#define P_CHECKOPENEVT 0x00080000 /* check if a vnode has the OPENEVT flag set on open */ 187 188#define P_DEPENDENCY_CAPABLE 0x00100000 /* process is ok to call vfs_markdependency() */ 189#define P_REBOOT 0x00200000 /* Process called reboot() */ 190#define P_TBE 0x00400000 /* Process is TBE */ 191#define P_RESV7 0x00800000 /* (P_SIGEXC)signal exceptions */ 192 193#define P_THCWD 0x01000000 /* process has thread cwd */ 194#define P_RESV9 0x02000000 /* (P_VFORK)process has vfork children */ 195#define P_RESV10 0x04000000 /* used to be P_NOATTACH */ 196#define P_RESV11 0x08000000 /* (P_INVFORK) proc in vfork */ 197 198#define P_NOSHLIB 0x10000000 /* no shared libs are in use for proc */ 199 /* flag set on exec */ 200#define P_FORCEQUOTA 0x20000000 /* Force quota for root */ 201#define P_NOCLDWAIT 0x40000000 /* No zombies when chil procs exit */ 202#define P_NOREMOTEHANG 0x80000000 /* Don't hang on remote FS ops */ 203 204#define P_INMEM 0 /* Obsolete: retained for compilation */ 205#define P_NOSWAP 0 /* Obsolete: retained for compilation */ 206#define P_PHYSIO 0 /* Obsolete: retained for compilation */ 207#define P_FSTRACE 0 /* Obsolete: retained for compilation */ 208#define P_SSTEP 0 /* Obsolete: retained for compilation */ 209 210#define P_DIRTY_TRACK 0x00000001 /* track dirty state */ 211#define P_DIRTY_ALLOW_IDLE_EXIT 0x00000002 /* process can be idle-exited when clean */ 212#define P_DIRTY 0x00000004 /* process is dirty */ 213#define P_DIRTY_SHUTDOWN 0x00000008 /* process is dirty during shutdown */ 214#define P_DIRTY_TERMINATED 0x00000010 /* process has been marked for termination */ 215#define P_DIRTY_BUSY 0x00000020 /* serialization flag */ 216 217#define P_DIRTY_CAN_IDLE_EXIT (P_DIRTY_TRACK | P_DIRTY_ALLOW_IDLE_EXIT) 218#define P_DIRTY_IS_DIRTY (P_DIRTY | P_DIRTY_SHUTDOWN) 219 220#endif /* XNU_KERNEL_PRIVATE || !KERNEL */ 221 222#ifdef KERNEL 223__BEGIN_DECLS 224 225extern proc_t kernproc; 226 227extern int proc_is_classic(proc_t p); 228proc_t current_proc_EXTERNAL(void); 229 230extern int msleep(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, struct timespec * ts ); 231extern void wakeup(void *chan); 232extern void wakeup_one(caddr_t chan); 233 234/* proc kpis */ 235/* this routine returns the pid of the current process */ 236extern int proc_selfpid(void); 237/* this routine returns the pid of the parent of the current process */ 238extern int proc_selfppid(void); 239/* this routine returns sends a signal signum to the process identified by the pid */ 240extern void proc_signal(int pid, int signum); 241/* this routine checks whether any signal identified by the mask are pending in the process identified by the pid. The check is on all threads of the process. */ 242extern int proc_issignal(int pid, sigset_t mask); 243/* this routine returns 1 if the pid1 is inferior of pid2 */ 244extern int proc_isinferior(int pid1, int pid2); 245/* this routine copies the process's name of the executable to the passed in buffer. It 246 * is always null terminated. The size of the buffer is to be passed in as well. This 247 * routine is to be used typically for debugging 248 */ 249void proc_name(int pid, char * buf, int size); 250/* This routine is simillar to proc_name except it returns for current process */ 251void proc_selfname(char * buf, int size); 252 253/* find a process with a given pid. This comes with a reference which needs to be dropped by proc_rele */ 254extern proc_t proc_find(int pid); 255/* returns a handle to current process which is referenced. The reference needs to be dropped with proc_rele */ 256extern proc_t proc_self(void); 257/* releases the held reference on the process */ 258extern int proc_rele(proc_t p); 259/* returns the pid of the given process */ 260extern int proc_pid(proc_t); 261/* returns the pid of the parent of a given process */ 262extern int proc_ppid(proc_t); 263/* returns 1 if the process is marked for no remote hangs */ 264extern int proc_noremotehang(proc_t); 265/* returns 1 if the process is marked for force quota */ 266extern int proc_forcequota(proc_t); 267 268/* this routine returns 1 if the process is running with 64bit address space, else 0 */ 269extern int proc_is64bit(proc_t); 270/* is this process exiting? */ 271extern int proc_exiting(proc_t); 272/* this routine returns error if the process is not one with super user privileges */ 273int proc_suser(proc_t p); 274/* returns the cred assicaited with the process; temporary api */ 275kauth_cred_t proc_ucred(proc_t p); 276 277extern int proc_tbe(proc_t); 278 279/*! 280 @function proc_selfpgrpid 281 @abstract Get the process group id for the current process, as with proc_pgrpid(). 282 @return pgrpid of current process. 283 */ 284pid_t proc_selfpgrpid(void); 285 286/*! 287 @function proc_pgrpid 288 @abstract Get the process group id for the passed-in process. 289 @param p Process whose pgrpid to grab. 290 @return pgrpid for "p". 291 */ 292pid_t proc_pgrpid(proc_t); 293 294#ifdef KERNEL_PRIVATE 295// mark a process as being allowed to call vfs_markdependency() 296void bsd_set_dependency_capable(task_t task); 297extern int IS_64BIT_PROCESS(proc_t); 298 299extern int tsleep(void *chan, int pri, const char *wmesg, int timo); 300extern int msleep1(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, u_int64_t timo); 301 302task_t proc_task(proc_t); 303extern int proc_pidversion(proc_t); 304extern int proc_getcdhash(proc_t, unsigned char *); 305#endif /* KERNEL_PRIVATE */ 306#ifdef XNU_KERNEL_PRIVATE 307/* 308 * This returns an unique 64bit id of a given process. 309 * Caller needs to hold proper reference on the 310 * passed in process strucutre. 311 */ 312extern uint64_t proc_uniqueid(proc_t); 313extern uint64_t proc_selfuniqueid(void); 314extern void proc_getexecutableuuid(proc_t, unsigned char *, unsigned long); 315#endif /* XNU_KERNEL_PRIVATE*/ 316 317__END_DECLS 318 319#endif /* KERNEL */ 320 321#ifdef PRIVATE 322 323/* Values for pid_shutdown_sockets */ 324#ifdef KERNEL 325#define SHUTDOWN_SOCKET_LEVEL_DISCONNECT_INTERNAL 0x0 326#endif /* KERNEL */ 327#define SHUTDOWN_SOCKET_LEVEL_DISCONNECT_SVC 0x1 328#define SHUTDOWN_SOCKET_LEVEL_DISCONNECT_ALL 0x2 329 330#ifndef KERNEL 331 332__BEGIN_DECLS 333 334int pid_suspend(int pid); 335int pid_resume(int pid); 336 337 338__END_DECLS 339 340#endif /* !KERNEL */ 341#endif /* PRIVATE */ 342 343#endif /* !_SYS_PROC_H_ */ 344