X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/6601e61aa18bf4f09af135ff61fc7f4771d23b06..cb3231590a3c94ab4375e2228bd5e86b0cf1ad7e:/bsd/sys/proc_internal.h diff --git a/bsd/sys/proc_internal.h b/bsd/sys/proc_internal.h index 4147cbe1f..763515e8f 100644 --- a/bsd/sys/proc_internal.h +++ b/bsd/sys/proc_internal.h @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2018 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. - * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */ /*- @@ -59,45 +65,120 @@ * * @(#)proc_internal.h 8.15 (Berkeley) 5/19/95 */ +/* + * NOTICE: This file was modified by SPARTA, Inc. in 2005 to introduce + * support for mandatory and extensible security protections. This notice + * is included in support of clause 2.2 (b) of the Apple Public License, + * Version 2.0. + */ #ifndef _SYS_PROC_INTERNAL_H_ -#define _SYS_PROC_INTERNAL_H_ +#define _SYS_PROC_INTERNAL_H_ +#include #include +#include // command/proc_name_t + __BEGIN_DECLS #include +#if PSYNCH +#include +#endif /* PSYNCH */ __END_DECLS +#if DEBUG +#define __PROC_INTERNAL_DEBUG 1 +#endif + +/* + * The short form for various locks that protect fields in the data structures. + * PL = Process Lock + * PGL = Process Group Lock + * PFDL = Process File Desc Lock + * PUCL = Process User Credentials Lock + * PSL = Process Spin Lock + * LL = List Lock + * SL = Session Lock + */ +struct label; + /* * One structure allocated per session. */ -struct session { - int s_count; /* Ref cnt; pgrps in session. */ - struct proc *s_leader; /* Session leader. */ - struct vnode *s_ttyvp; /* Vnode of controlling terminal. */ - struct tty *s_ttyp; /* Controlling terminal. */ - pid_t s_sid; /* Session ID */ - char s_login[MAXLOGNAME]; /* Setlogin() name. */ +struct session { + int s_count; /* Ref cnt; pgrps in session. (LL) */ + struct proc * s_leader; /* Session leader.(static) */ + struct vnode * s_ttyvp; /* Vnode of controlling terminal.(SL) */ + int s_ttyvid; /* Vnode id of the controlling terminal (SL) */ + struct tty * s_ttyp; /* Controlling terminal. (SL + ttyvp != NULL) */ + pid_t s_ttypgrpid; /* tty's pgrp id */ + pid_t s_sid; /* Session ID (static) */ + char s_login[MAXLOGNAME]; /* Setlogin() name.(SL) */ + int s_flags; /* Session flags (s_mlock) */ + LIST_ENTRY(session) s_hash; /* Hash chain.(LL) */ + lck_mtx_t s_mlock; /* mutex lock to protect session */ + int s_listflags; }; +#define SESSION_NULL (struct session *)NULL + +/* + * accessor for s_ttyp which treats it as invalid if s_ttyvp is not valid; + * note that s_ttyp is not a reference in the session structre, so it can + * become invalid out from under the session if the device is closed, without + * this protection. We can't safely make it into a reference without reflexive + * close notification of tty devices through cdevsw[]. + * + * NB: is not in scope and there is not typedef type enforcement, + * or '0' below would be 'TTY_NULL'. + */ +#define SESSION_TP(sp) (((sp)->s_ttyvp != 0) ? (sp)->s_ttyp : 0) + +/* + * Session flags; used to tunnel information to lower layers and line + * disciplines, etc. + */ +#define S_DEFAULT 0x00000000 /* No flags set */ +#define S_NOCTTY 0x00000001 /* Do not associate controlling tty */ +#define S_CTTYREF 0x00000010 /* vnode ref taken by cttyopen */ + + +#define S_LIST_TERM 1 /* marked for termination */ +#define S_LIST_DEAD 2 /* already dead */ /* * One structure allocated per process group. */ -struct pgrp { - LIST_ENTRY(pgrp) pg_hash; /* Hash chain. */ - LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members. */ - struct session *pg_session; /* Pointer to session. */ - pid_t pg_id; /* Pgrp id. */ - int pg_jobc; /* # procs qualifying pgrp for job control */ +struct pgrp { + LIST_ENTRY(pgrp) pg_hash; /* Hash chain. (LL) */ + LIST_HEAD(, proc) pg_members; /* Pointer to pgrp members. (PGL) */ + struct session * pg_session; /* Pointer to session. (LL ) */ + pid_t pg_id; /* Pgrp id. (static) */ + int pg_jobc; /* # procs qualifying pgrp for job control (PGL) */ + int pg_membercnt; /* Number of processes in the pgrocess group (PGL) */ + int pg_refcount; /* number of current iterators (LL) */ + unsigned int pg_listflags; /* (LL) */ + lck_mtx_t pg_mlock; /* mutex lock to protect pgrp */ }; -struct proc; +#define PGRP_FLAG_TERMINATE 1 +#define PGRP_FLAG_WAITTERMINATE 2 +#define PGRP_FLAG_DEAD 4 +#define PGRP_FLAG_ITERABEGIN 8 +#define PGRP_FLAG_ITERWAIT 0x10 -#define PROC_NULL (struct proc *)0 +#define PGRP_NULL (struct pgrp *)NULL +struct proc; -#define p_session p_pgrp->pg_session -#define p_pgid p_pgrp->pg_id +#define PROC_NULL (struct proc *)NULL +#define PROC_UPDATE_CREDS_ONPROC(p) { \ + p->p_uid = kauth_cred_getuid(p->p_ucred); \ + p->p_gid = kauth_cred_getgid(p->p_ucred); \ + p->p_ruid = kauth_cred_getruid(p->p_ucred); \ + p->p_rgid = kauth_cred_getrgid(p->p_ucred); \ + p->p_svuid = kauth_cred_getsvuid(p->p_ucred); \ + p->p_svgid = kauth_cred_getsvgid(p->p_ucred); \ + } /* * Description of a process. * @@ -109,274 +190,686 @@ struct proc; * which might be addressible only on a processor on which the process * is running. */ -struct proc { - LIST_ENTRY(proc) p_list; /* List of all processes. */ - - /* substructures: */ - struct ucred *p_ucred; /* Process owner's identity. */ - struct filedesc *p_fd; /* Ptr to open files structure. */ - struct pstats *p_stats; /* Accounting/statistics (PROC ONLY). */ - struct plimit *p_limit; /* Process limits. */ - struct sigacts *p_sigacts; /* Signal actions, state (PROC ONLY). */ - -#define p_rlimit p_limit->pl_rlimit - - int p_flag; /* P_* flags. */ - char p_stat; /* S* process status. */ - char p_shutdownstate; - char p_pad1[2]; - - pid_t p_pid; /* Process identifier. */ - LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp. */ - struct proc *p_pptr; /* Pointer to parent process. */ - LIST_ENTRY(proc) p_sibling; /* List of sibling processes. */ - LIST_HEAD(, proc) p_children; /* Pointer to list of children. */ - -/* The following fields are all zeroed upon creation in fork. */ -#define p_startzero p_oppid - - pid_t p_oppid; /* Save parent pid during ptrace. XXX */ - int p_dupfd; /* Sideways return value from fdopen. XXX */ - - /* scheduling */ - u_int p_estcpu; /* Time averaged value of p_cpticks. */ - int p_cpticks; /* Ticks of cpu time. */ - fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ - void *p_wchan; /* Sleep address. */ - char *p_wmesg; /* Reason for sleep. */ - u_int p_swtime; /* DEPRECATED (Time swapped in or out.) */ -#define p_argslen p_swtime /* Length of process arguments. */ - u_int p_slptime; /* Time since last blocked. */ - - struct itimerval p_realtimer; /* Alarm timer. */ - struct timeval p_rtime; /* Real time. */ - u_quad_t p_uticks; /* Statclock hits in user mode. */ - u_quad_t p_sticks; /* Statclock hits in system mode. */ - u_quad_t p_iticks; /* Statclock hits processing intr. */ - - int p_traceflag; /* Kernel trace points. */ - struct vnode *p_tracep; /* Trace to vnode. */ - - sigset_t p_siglist; /* DEPRECATED. */ +struct proc { + LIST_ENTRY(proc) p_list; /* List of all processes. */ + + void * task; /* corresponding task (static)*/ + struct proc * p_pptr; /* Pointer to parent process.(LL) */ + pid_t p_ppid; /* process's parent pid number */ + pid_t p_original_ppid; /* process's original parent pid number, doesn't change if reparented */ + pid_t p_pgrpid; /* process group id of the process (LL)*/ + uid_t p_uid; + gid_t p_gid; + uid_t p_ruid; + gid_t p_rgid; + uid_t p_svuid; + gid_t p_svgid; + uint64_t p_uniqueid; /* process unique ID - incremented on fork/spawn/vfork, remains same across exec. */ + uint64_t p_puniqueid; /* parent's unique ID - set on fork/spawn/vfork, doesn't change if reparented. */ + + lck_mtx_t p_mlock; /* mutex lock for proc */ + pid_t p_pid; /* Process identifier. (static)*/ + char p_stat; /* S* process status. (PL)*/ + char p_shutdownstate; + char p_kdebug; /* P_KDEBUG eq (CC)*/ + char p_btrace; /* P_BTRACE eq (CC)*/ + + LIST_ENTRY(proc) p_pglist; /* List of processes in pgrp.(PGL) */ + LIST_ENTRY(proc) p_sibling; /* List of sibling processes. (LL)*/ + LIST_HEAD(, proc) p_children; /* Pointer to list of children. (LL)*/ + TAILQ_HEAD(, uthread) p_uthlist; /* List of uthreads (PL) */ + + LIST_ENTRY(proc) p_hash; /* Hash chain. (LL)*/ + TAILQ_HEAD(, eventqelt) p_evlist; /* (PL) */ + +#if CONFIG_PERSONAS + struct persona *p_persona; + LIST_ENTRY(proc) p_persona_list; +#endif - struct vnode *p_textvp; /* Vnode of executable. */ + lck_mtx_t p_fdmlock; /* proc lock to protect fdesc */ + lck_mtx_t p_ucred_mlock; /* mutex lock to protect p_ucred */ -/* End area that is zeroed on creation. */ -#define p_endzero p_hash.le_next + /* substructures: */ + kauth_cred_t p_ucred; /* Process owner's identity. (PUCL) */ + struct filedesc *p_fd; /* Ptr to open files structure. (PFDL) */ + struct pstats *p_stats; /* Accounting/statistics (PL). */ + struct plimit *p_limit; /* Process limits.(PL) */ + + struct sigacts *p_sigacts; /* Signal actions, state (PL) */ + lck_spin_t p_slock; /* spin lock for itimer/profil protection */ + +#define p_rlimit p_limit->pl_rlimit + + struct plimit *p_olimit; /* old process limits - not inherited by child (PL) */ + int p_siglist; /* signals captured back from threads */ + unsigned int p_flag; /* P_* flags. (atomic bit ops) */ + unsigned int p_lflag; /* local flags (PL) */ + unsigned int p_listflag; /* list flags (LL) */ + unsigned int p_ladvflag; /* local adv flags (atomic) */ + int p_refcount; /* number of outstanding users(LL) */ + int p_childrencnt; /* children holding ref on parent (LL) */ + int p_parentref; /* children lookup ref on parent (LL) */ + pid_t p_oppid; /* Save parent pid during ptrace. XXX */ + u_int p_xstat; /* Exit status for wait; also stop signal. */ + +#ifdef _PROC_HAS_SCHEDINFO_ + /* may need cleanup, not used */ + u_int p_estcpu; /* Time averaged value of p_cpticks.(used by aio and proc_comapre) */ + fixpt_t p_pctcpu; /* %cpu for this process during p_swtime (used by aio)*/ + u_int p_slptime; /* used by proc_compare */ +#endif /* _PROC_HAS_SCHEDINFO_ */ + + struct itimerval p_realtimer; /* Alarm timer. (PSL) */ + struct timeval p_rtime; /* Real time.(PSL) */ + struct itimerval p_vtimer_user; /* Virtual timers.(PSL) */ + struct itimerval p_vtimer_prof; /* (PSL) */ + + struct timeval p_rlim_cpu; /* Remaining rlim cpu value.(PSL) */ + int p_debugger; /* NU 1: can exec set-bit programs if suser */ + boolean_t sigwait; /* indication to suspend (PL) */ + void *sigwait_thread; /* 'thread' holding sigwait(PL) */ + void *exit_thread; /* Which thread is exiting(PL) */ + void * p_vforkact; /* activation running this vfork proc)(static) */ + int p_vforkcnt; /* number of outstanding vforks(PL) */ + int p_fpdrainwait; /* (PFDL) */ + /* Following fields are info from SIGCHLD (PL) */ + pid_t si_pid; /* (PL) */ + u_int si_status; /* (PL) */ + u_int si_code; /* (PL) */ + uid_t si_uid; /* (PL) */ + + void * vm_shm; /* (SYSV SHM Lock) for sysV shared memory */ + +#if CONFIG_DTRACE + user_addr_t p_dtrace_argv; /* (write once, read only after that) */ + user_addr_t p_dtrace_envp; /* (write once, read only after that) */ + lck_mtx_t p_dtrace_sprlock; /* sun proc lock emulation */ + uint8_t p_dtrace_stop; /* indicates a DTrace-desired stop */ + int p_dtrace_probes; /* (PL) are there probes for this proc? */ + u_int p_dtrace_count; /* (sprlock) number of DTrace tracepoints */ + struct dtrace_ptss_page* p_dtrace_ptss_pages; /* (sprlock) list of user ptss pages */ + struct dtrace_ptss_page_entry* p_dtrace_ptss_free_list; /* (atomic) list of individual ptss entries */ + struct dtrace_helpers* p_dtrace_helpers; /* (dtrace_lock) DTrace per-proc private */ + struct dof_ioctl_data* p_dtrace_lazy_dofs; /* (sprlock) unloaded dof_helper_t's */ +#endif /* CONFIG_DTRACE */ + +/* XXXXXXXXXXXXX BCOPY'ed on fork XXXXXXXXXXXXXXXX */ +/* The following fields are all copied upon creation in fork. */ +#define p_startcopy p_argslen + + u_int p_argslen; /* Length of process arguments. */ + int p_argc; /* saved argc for sysctl_procargs() */ + user_addr_t user_stack; /* where user stack was allocated */ + struct vnode *p_textvp; /* Vnode of executable. */ + off_t p_textoff; /* offset in executable vnode */ + + sigset_t p_sigmask; /* DEPRECATED */ + sigset_t p_sigignore; /* Signals being ignored. (PL) */ + sigset_t p_sigcatch; /* Signals being caught by user.(PL) */ + + u_char p_priority; /* (NU) Process priority. */ + u_char p_resv0; /* (NU) User-priority based on p_cpu and p_nice. */ + char p_nice; /* Process "nice" value.(PL) */ + u_char p_resv1; /* (NU) User-priority based on p_cpu and p_nice. */ + + // types currently in sys/param.h + command_t p_comm; + proc_name_t p_name; /* can be changed by the process */ + uint8_t p_xhighbits; /* Stores the top byte of exit status to avoid truncation*/ + pid_t p_contproc; /* last PID to send us a SIGCONT (PL) */ + + struct pgrp *p_pgrp; /* Pointer to process group. (LL) */ + uint32_t p_csflags; /* flags for codesign (PL) */ + uint32_t p_pcaction; /* action for process control on starvation */ + uint8_t p_uuid[16]; /* from LC_UUID load command */ /* - * Not copied, not zero'ed. - * Belongs after p_pid, but here to avoid shifting proc elements. + * CPU type and subtype of binary slice executed in + * this process. Protected by proc lock. */ - LIST_ENTRY(proc) p_hash; /* Hash chain. */ - TAILQ_HEAD( ,eventqelt) p_evlist; + cpu_type_t p_cputype; + cpu_subtype_t p_cpusubtype; -/* The following fields are all copied upon creation in fork. */ -#define p_startcopy p_sigmask - - sigset_t p_sigmask; /* DEPRECATED */ - sigset_t p_sigignore; /* Signals being ignored. */ - sigset_t p_sigcatch; /* Signals being caught by user. */ - - u_char p_priority; /* Process priority. */ - u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ - char p_nice; /* Process "nice" value. */ - char p_comm[MAXCOMLEN+1]; - - struct pgrp *p_pgrp; /* Pointer to process group. */ + uint8_t *syscall_filter_mask; /* syscall filter bitmask (length: nsysent bits) */ + uint32_t p_platform; + uint32_t p_sdk; /* End area that is copied on creation. */ -#define p_endcopy p_xstat - - u_short p_xstat; /* Exit status for wait; also stop signal. */ - u_short p_acflag; /* Accounting flags. */ - struct rusage *p_ru; /* Exit information. XXX */ - - int p_debugger; /* 1: can exec set-bit programs if suser */ - - void *task; /* corresponding task */ - void *sigwait_thread; /* 'thread' holding sigwait */ - char signal_lock[72]; - boolean_t sigwait; /* indication to suspend */ - void *exit_thread; /* Which thread is exiting? */ - user_addr_t user_stack; /* where user stack was allocated */ - void * exitarg; /* exit arg for proc terminate */ - void * vm_shm; /* for sysV shared memory */ - int p_argc; /* saved argc for sysctl_procargs() */ - int p_vforkcnt; /* number of outstanding vforks */ - void * p_vforkact; /* activation running this vfork proc */ - TAILQ_HEAD( , uthread) p_uthlist; /* List of uthreads */ - /* Following fields are info from SIGCHLD */ - pid_t si_pid; - u_short si_status; - u_short si_code; - uid_t si_uid; - TAILQ_HEAD( , aio_workq_entry ) aio_activeq; /* active async IO requests */ - int aio_active_count; /* entries on aio_activeq */ - TAILQ_HEAD( , aio_workq_entry ) aio_doneq; /* completed async IO requests */ - int aio_done_count; /* entries on aio_doneq */ - - struct klist p_klist; /* knote list */ - lck_mtx_t p_mlock; /* proc lock to protect evques */ - lck_mtx_t p_fdmlock; /* proc lock to protect evques */ +/* XXXXXXXXXXXXX End of BCOPY'ed on fork (AIOLOCK)XXXXXXXXXXXXXXXX */ +#define p_endcopy p_aio_total_count + int p_aio_total_count; /* all allocated AIO requests for this proc */ + int p_aio_active_count; /* all unfinished AIO requests for this proc */ + TAILQ_HEAD(, aio_workq_entry ) p_aio_activeq; /* active async IO requests */ + TAILQ_HEAD(, aio_workq_entry ) p_aio_doneq; /* completed async IO requests */ + + struct klist p_klist; /* knote list (PL ?)*/ + + struct rusage_superset *p_ru; /* Exit information. (PL) */ + thread_t p_signalholder; + thread_t p_transholder; + int p_sigwaitcnt; + /* DEPRECATE following field */ + u_short p_acflag; /* Accounting flags. */ + volatile u_short p_vfs_iopolicy; /* VFS iopolicy flags. (atomic bit ops) */ + + user_addr_t p_threadstart; /* pthread start fn */ + user_addr_t p_wqthread; /* pthread workqueue fn */ + int p_pthsize; /* pthread size */ + uint32_t p_pth_tsd_offset; /* offset from pthread_t to TSD for new threads */ + user_addr_t p_stack_addr_hint; /* stack allocation hint for wq threads */ + struct workqueue *_Atomic p_wqptr; /* workq ptr */ + + struct timeval p_start; /* starting time */ + void * p_rcall; + int p_ractive; + int p_idversion; /* version of process identity */ + void * p_pthhash; /* pthread waitqueue hash */ + volatile uint64_t was_throttled __attribute__((aligned(8))); /* Counter for number of throttled I/Os */ + volatile uint64_t did_throttle __attribute__((aligned(8))); /* Counter for number of I/Os this proc throttled */ + +#if DIAGNOSTIC unsigned int p_fdlock_pc[4]; unsigned int p_fdunlock_pc[4]; - int p_fpdrainwait; - unsigned int p_lflag; /* local flags */ - unsigned int p_ladvflag; /* local adv flags*/ - unsigned int p_internalref; /* temp refcount field */ -#if DIAGNOSTIC #if SIGNAL_DEBUG unsigned int lockpc[8]; unsigned int unlockpc[8]; #endif /* SIGNAL_DEBUG */ #endif /* DIAGNOSTIC */ + uint64_t p_dispatchqueue_offset; + uint64_t p_dispatchqueue_serialno_offset; + uint64_t p_dispatchqueue_label_offset; + uint64_t p_return_to_kernel_offset; + uint64_t p_mach_thread_self_offset; +#if VM_PRESSURE_EVENTS + struct timeval vm_pressure_last_notify_tstamp; +#endif + +#if CONFIG_MEMORYSTATUS + /* Fields protected by proc list lock */ + TAILQ_ENTRY(proc) p_memstat_list; /* priority bucket link */ + uint32_t p_memstat_state; /* state. Also used as a wakeup channel when the memstat's LOCKED bit changes */ + int32_t p_memstat_effectivepriority; /* priority after transaction state accounted for */ + int32_t p_memstat_requestedpriority; /* active priority */ + int32_t p_memstat_assertionpriority; /* assertion driven priority */ + uint32_t p_memstat_dirty; /* dirty state */ + uint64_t p_memstat_userdata; /* user state */ + uint64_t p_memstat_idledeadline; /* time at which process became clean */ + uint64_t p_memstat_idle_start; /* abstime process transitions into the idle band */ + uint64_t p_memstat_idle_delta; /* abstime delta spent in idle band */ + int32_t p_memstat_memlimit; /* cached memory limit, toggles between active and inactive limits */ + int32_t p_memstat_memlimit_active; /* memory limit enforced when process is in active jetsam state */ + int32_t p_memstat_memlimit_inactive; /* memory limit enforced when process is in inactive jetsam state */ + int32_t p_memstat_relaunch_flags; /* flags indicating relaunch behavior for the process */ +#if CONFIG_FREEZE + uint32_t p_memstat_freeze_sharedanon_pages; /* shared pages left behind after freeze */ + uint32_t p_memstat_frozen_count; + uint32_t p_memstat_thaw_count; +#endif /* CONFIG_FREEZE */ +#endif /* CONFIG_MEMORYSTATUS */ + + /* cached proc-specific data required for corpse inspection */ + pid_t p_responsible_pid; /* pid resonsible for this process */ + _Atomic uint32_t p_user_faults; /* count the number of user faults generated */ + + uint32_t p_memlimit_increase; /* byte increase for memory limit for dyld SPI rdar://problem/49950264, structure packing 32-bit and 64-bit */ + + struct os_reason *p_exit_reason; + +#if !CONFIG_EMBEDDED + uint64_t p_user_data; /* general-purpose storage for userland-provided data */ +#endif /* !CONFIG_EMBEDDED */ }; +#define PGRPID_DEAD 0xdeaddead + +/* p_listflag */ +#define P_LIST_DRAIN 0x00000001 +#define P_LIST_DRAINWAIT 0x00000002 +#define P_LIST_DRAINED 0x00000004 +#define P_LIST_DEAD 0x00000008 +#define P_LIST_WAITING 0x00000010 +#define P_LIST_EXITED 0x00000040 +#define P_LIST_CHILDDRSTART 0x00000080 +#define P_LIST_CHILDDRAINED 0x00000100 +#define P_LIST_CHILDDRWAIT 0x00000200 +#define P_LIST_CHILDLKWAIT 0x00000400 +#define P_LIST_DEADPARENT 0x00000800 +#define P_LIST_PARENTREFWAIT 0x00001000 +#define P_LIST_INCREATE 0x00002000 +/* 0x4000 & 0x8000 Not used */ +#define P_LIST_INHASH 0x00010000 /* process is in hash */ +#define P_LIST_INPGRP 0x00020000 /* process is in pgrp */ +#define P_LIST_PGRPTRANS 0x00040000 /* pgrp is getting replaced */ +#define P_LIST_PGRPTRWAIT 0x00080000 /* wait for pgrp replacement */ +#define P_LIST_EXITCOUNT 0x00100000 /* counted for process exit */ +#define P_LIST_REFWAIT 0x00200000 /* wait to take a ref */ + /* local flags */ -#define P_LDELAYTERM 0x1 /* */ -#define P_LNOZOMB 0x2 /* */ -#define P_LLOW_PRI_IO 0x4 -#define P_LPEXIT 0x8 -#define P_LBACKGROUND_IO 0x10 -#define P_LWAITING 0x20 -#define P_LREFDRAIN 0x40 -#define P_LREFDRAINWAIT 0x80 -#define P_LREFDEAD 0x100 - -/* advisory flags in the proc */ -#define P_LADVLOCK 0x01 - -// LP64todo - should this move? -/* LP64 version of extern_proc. all pointers +#define P_LDELAYTERM 0x00000001 /* */ +#define P_LNOZOMB 0x00000002 /* */ +#define P_LTERM 0x00000004 /* */ +#define P_LEXIT 0x00000008 /* */ +#define P_LPEXIT 0x00000010 +#define P_LTRANSCOMMIT 0x00000020 /* process is committed to trans */ +#define P_LINTRANSIT 0x00000040 /* process in exec or in creation */ +#define P_LTRANSWAIT 0x00000080 /* waiting for trans to complete */ +#define P_LVFORK 0x00000100 /* parent proc of a vfork */ +#define P_LINVFORK 0x00000200 /* child proc of a vfork */ +#define P_LTRACED 0x00000400 /* */ +#define P_LSIGEXC 0x00000800 /* */ +#define P_LNOATTACH 0x00001000 /* */ +#define P_LPPWAIT 0x00002000 /* */ +#define P_LKQWDRAIN 0x00004000 +#define P_LKQWDRAINWAIT 0x00008000 +#define P_LKQWDEAD 0x00010000 +#define P_LLIMCHANGE 0x00020000 +#define P_LLIMWAIT 0x00040000 +#define P_LWAITED 0x00080000 +#define P_LINSIGNAL 0x00100000 +#define P_LCUSTOM_STACK 0x00200000 /* process is using custom stack size */ +#define P_LRAGE_VNODES 0x00400000 +#define P_LREGISTER 0x00800000 /* thread start fns registered */ +#define P_LVMRSRCOWNER 0x01000000 /* can handle the resource ownership of */ +#define P_LTERM_DECRYPTFAIL 0x04000000 /* process terminating due to key failure to decrypt */ +#define P_LTERM_JETSAM 0x08000000 /* process is being jetsam'd */ + +#define P_JETSAM_VMPAGESHORTAGE 0x00000000 /* jetsam: lowest jetsam priority proc, killed due to vm page shortage */ +#define P_JETSAM_VMTHRASHING 0x10000000 /* jetsam: lowest jetsam priority proc, killed due to vm thrashing */ +#define P_JETSAM_HIWAT 0x20000000 /* jetsam: high water mark */ +#define P_JETSAM_PID 0x30000000 /* jetsam: pid */ +#define P_JETSAM_IDLEEXIT 0x40000000 /* jetsam: idle exit */ +#define P_JETSAM_VNODE 0x50000000 /* jetsam: vnode kill */ +#define P_JETSAM_FCTHRASHING 0x60000000 /* jetsam: lowest jetsam priority proc, killed due to filecache thrashing */ +#define P_JETSAM_MASK 0x70000000 /* jetsam type mask */ +#define P_LNSPACE_RESOLVER 0x80000000 /* process is the namespace resolver */ + +/* Process control state for resource starvation */ +#define P_PCTHROTTLE 1 +#define P_PCSUSP 2 +#define P_PCKILL 3 +#define P_PCMAX 3 + +/* Process control action state on resrouce starvation */ +#define PROC_ACTION_MASK 0xffff0000; +#define PROC_CONTROL_STATE(p) (p->p_pcaction & P_PCMAX) +#define PROC_ACTION_STATE(p) ((p->p_pcaction >> 16) & P_PCMAX) +#define PROC_SETACTION_STATE(p) (p->p_pcaction = (PROC_CONTROL_STATE(p) | (PROC_CONTROL_STATE(p) << 16))) +#define PROC_RESETACTION_STATE(p) (p->p_pcaction = PROC_CONTROL_STATE(p)) + +/* Process exit reason macros */ +#define PROC_HAS_EXITREASON(p) (p->p_exit_reason != OS_REASON_NULL) +#define PROC_EXITREASON_FLAGS(p) p->p_exit_reason->osr_flags + +/* additional process flags */ +#define P_LADVLOCK 0x01 +#define P_LXBKIDLEINPROG 0x02 + +/* p_vfs_iopolicy flags */ +#define P_VFS_IOPOLICY_FORCE_HFS_CASE_SENSITIVITY 0x0001 +#define P_VFS_IOPOLICY_ATIME_UPDATES 0x0002 +#define P_VFS_IOPOLICY_MATERIALIZE_DATALESS_FILES 0x0004 +#define P_VFS_IOPOLICY_STATFS_NO_DATA_VOLUME 0x0008 +#define P_VFS_IOPOLICY_VALID_MASK (P_VFS_IOPOLICY_ATIME_UPDATES | P_VFS_IOPOLICY_FORCE_HFS_CASE_SENSITIVITY | P_VFS_IOPOLICY_MATERIALIZE_DATALESS_FILES | P_VFS_IOPOLICY_STATFS_NO_DATA_VOLUME) + +/* process creation arguments */ +#define PROC_CREATE_FORK 0 /* independent child (running) */ +#define PROC_CREATE_SPAWN 1 /* independent child (suspended) */ +#define PROC_CREATE_VFORK 2 /* child borrows context */ + +/* LP64 version of extern_proc. all pointers * grow when we're dealing with a 64-bit process. * WARNING - keep in sync with extern_proc * but use native alignment of 64-bit process. */ #ifdef KERNEL -#include /* user_timeval, user_itimerval */ +#include /* user_timeval, user_itimerval */ -#if __DARWIN_ALIGN_NATURAL -#pragma options align=natural +/* + * This packing is required to ensure symmetry between userspace and kernelspace + * when the kernel is 64-bit and the user application is 32-bit. All currently + * supported ARM slices (arm64/armv7k/arm64_32) contain the same struct + * alignment ABI so this packing isn't needed for ARM. + */ +#if defined(__x86_64__) +#pragma pack(4) #endif - -struct user_extern_proc { +struct user32_extern_proc { + union { + struct { + uint32_t __p_forw; /* Doubly-linked run/sleep queue. */ + uint32_t __p_back; + } p_st1; + struct user32_timeval __p_starttime; /* process start time */ + } p_un; + uint32_t p_vmspace; /* Address space. */ + uint32_t p_sigacts; /* Signal actions, state (PROC ONLY). */ + int p_flag; /* P_* flags. */ + char p_stat; /* S* process status. */ + pid_t p_pid; /* Process identifier. */ + pid_t p_oppid; /* Save parent pid during ptrace. XXX */ + int p_dupfd; /* Sideways return value from fdopen. XXX */ + /* Mach related */ + uint32_t user_stack; /* where user stack was allocated */ + uint32_t exit_thread; /* XXX Which thread is exiting? */ + int p_debugger; /* allow to debug */ + boolean_t sigwait; /* indication to suspend */ + /* scheduling */ + u_int p_estcpu; /* Time averaged value of p_cpticks. */ + int p_cpticks; /* Ticks of cpu time. */ + fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ + uint32_t p_wchan; /* Sleep address. */ + uint32_t p_wmesg; /* Reason for sleep. */ + u_int p_swtime; /* Time swapped in or out. */ + u_int p_slptime; /* Time since last blocked. */ + struct user32_itimerval p_realtimer; /* Alarm timer. */ + struct user32_timeval p_rtime; /* Real time. */ + u_quad_t p_uticks; /* Statclock hits in user mode. */ + u_quad_t p_sticks; /* Statclock hits in system mode. */ + u_quad_t p_iticks; /* Statclock hits processing intr. */ + int p_traceflag; /* Kernel trace points. */ + uint32_t p_tracep; /* Trace to vnode. */ + int p_siglist; /* DEPRECATED */ + uint32_t p_textvp; /* Vnode of executable. */ + int p_holdcnt; /* If non-zero, don't swap. */ + sigset_t p_sigmask; /* DEPRECATED. */ + sigset_t p_sigignore; /* Signals being ignored. */ + sigset_t p_sigcatch; /* Signals being caught by user. */ + u_char p_priority; /* Process priority. */ + u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ + char p_nice; /* Process "nice" value. */ + char p_comm[MAXCOMLEN + 1]; + uint32_t p_pgrp; /* Pointer to process group. */ + uint32_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */ + u_short p_xstat; /* Exit status for wait; also stop signal. */ + u_short p_acflag; /* Accounting flags. */ + uint32_t p_ru; /* Exit information. XXX */ +}; +#pragma pack() +struct user64_extern_proc { union { struct { - user_addr_t __p_forw; /* Doubly-linked run/sleep queue. */ + user_addr_t __p_forw; /* Doubly-linked run/sleep queue. */ user_addr_t __p_back; } p_st1; - struct user_timeval __p_starttime; /* process start time */ + struct user64_timeval __p_starttime; /* process start time */ } p_un; - user_addr_t p_vmspace; /* Address space. */ - user_addr_t p_sigacts; /* Signal actions, state (PROC ONLY). */ - int p_flag; /* P_* flags. */ - char p_stat; /* S* process status. */ - pid_t p_pid; /* Process identifier. */ - pid_t p_oppid; /* Save parent pid during ptrace. XXX */ - int p_dupfd; /* Sideways return value from fdopen. XXX */ + user_addr_t p_vmspace; /* Address space. */ + user_addr_t p_sigacts; /* Signal actions, state (PROC ONLY). */ + int p_flag; /* P_* flags. */ + char p_stat; /* S* process status. */ + pid_t p_pid; /* Process identifier. */ + pid_t p_oppid; /* Save parent pid during ptrace. XXX */ + int p_dupfd; /* Sideways return value from fdopen. XXX */ /* Mach related */ - user_addr_t user_stack; /* where user stack was allocated */ + user_addr_t user_stack __attribute((aligned(8))); /* where user stack was allocated */ user_addr_t exit_thread; /* XXX Which thread is exiting? */ - int p_debugger; /* allow to debug */ - boolean_t sigwait; /* indication to suspend */ + int p_debugger; /* allow to debug */ + boolean_t sigwait; /* indication to suspend */ /* scheduling */ - u_int p_estcpu; /* Time averaged value of p_cpticks. */ - int p_cpticks; /* Ticks of cpu time. */ - fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ - user_addr_t p_wchan; /* Sleep address. */ - user_addr_t p_wmesg; /* Reason for sleep. */ - u_int p_swtime; /* Time swapped in or out. */ - u_int p_slptime; /* Time since last blocked. */ - struct user_itimerval p_realtimer; /* Alarm timer. */ - struct user_timeval p_rtime; /* Real time. */ - u_quad_t p_uticks; /* Statclock hits in user mode. */ - u_quad_t p_sticks; /* Statclock hits in system mode. */ - u_quad_t p_iticks; /* Statclock hits processing intr. */ - int p_traceflag; /* Kernel trace points. */ - user_addr_t p_tracep; /* Trace to vnode. */ - int p_siglist; /* DEPRECATED */ - user_addr_t p_textvp; /* Vnode of executable. */ - int p_holdcnt; /* If non-zero, don't swap. */ - sigset_t p_sigmask; /* DEPRECATED. */ - sigset_t p_sigignore; /* Signals being ignored. */ - sigset_t p_sigcatch; /* Signals being caught by user. */ - u_char p_priority; /* Process priority. */ - u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ - char p_nice; /* Process "nice" value. */ - char p_comm[MAXCOMLEN+1]; - user_addr_t p_pgrp; /* Pointer to process group. */ - user_addr_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */ - u_short p_xstat; /* Exit status for wait; also stop signal. */ - u_short p_acflag; /* Accounting flags. */ - user_addr_t p_ru; /* Exit information. XXX */ + u_int p_estcpu; /* Time averaged value of p_cpticks. */ + int p_cpticks; /* Ticks of cpu time. */ + fixpt_t p_pctcpu; /* %cpu for this process during p_swtime */ + user_addr_t p_wchan __attribute((aligned(8))); /* Sleep address. */ + user_addr_t p_wmesg; /* Reason for sleep. */ + u_int p_swtime; /* Time swapped in or out. */ + u_int p_slptime; /* Time since last blocked. */ + struct user64_itimerval p_realtimer; /* Alarm timer. */ + struct user64_timeval p_rtime; /* Real time. */ + u_quad_t p_uticks; /* Statclock hits in user mode. */ + u_quad_t p_sticks; /* Statclock hits in system mode. */ + u_quad_t p_iticks; /* Statclock hits processing intr. */ + int p_traceflag; /* Kernel trace points. */ + user_addr_t p_tracep __attribute((aligned(8))); /* Trace to vnode. */ + int p_siglist; /* DEPRECATED */ + user_addr_t p_textvp __attribute((aligned(8))); /* Vnode of executable. */ + int p_holdcnt; /* If non-zero, don't swap. */ + sigset_t p_sigmask; /* DEPRECATED. */ + sigset_t p_sigignore; /* Signals being ignored. */ + sigset_t p_sigcatch; /* Signals being caught by user. */ + u_char p_priority; /* Process priority. */ + u_char p_usrpri; /* User-priority based on p_cpu and p_nice. */ + char p_nice; /* Process "nice" value. */ + char p_comm[MAXCOMLEN + 1]; + user_addr_t p_pgrp __attribute((aligned(8))); /* Pointer to process group. */ + user_addr_t p_addr; /* Kernel virtual addr of u-area (PROC ONLY). */ + u_short p_xstat; /* Exit status for wait; also stop signal. */ + u_short p_acflag; /* Accounting flags. */ + user_addr_t p_ru __attribute((aligned(8))); /* Exit information. XXX */ }; - -#if __DARWIN_ALIGN_NATURAL -#pragma options align=reset -#endif -#endif /* KERNEL */ +#endif /* KERNEL */ /* * We use process IDs <= PID_MAX; PID_MAX + 1 must also fit in a pid_t, * as it is used to represent "no process group". */ -extern int nprocs, maxproc; /* Current and max number of procs. */ -__private_extern__ int hard_maxproc; /* hard limit */ - -#define PID_MAX 30000 -#define NO_PID 30001 - -#define SESS_LEADER(p) ((p)->p_session->s_leader == (p)) -#define SESSHOLD(s) ((s)->s_count++) -#define SESSRELE(s) sessrele(s) - -#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) -extern LIST_HEAD(pidhashhead, proc) *pidhashtbl; +extern int nprocs, maxproc; /* Current and max number of procs. */ +extern int maxprocperuid; /* Current number of procs per uid */ +extern int hard_maxproc; /* hard limit */ +extern unsigned int proc_shutdown_exitcount; + +#define PID_MAX 99999 +#define NO_PID 100000 +extern lck_mtx_t * proc_list_mlock; +extern lck_mtx_t * proc_klist_mlock; + +#define BSD_SIMUL_EXECS 33 /* 32 , allow for rounding */ +#define BSD_PAGEABLE_SIZE_PER_EXEC (NCARGS + PAGE_SIZE + PAGE_SIZE) /* page for apple vars, page for executable header */ +extern int execargs_cache_size; +extern int execargs_free_count; +extern vm_offset_t * execargs_cache; + +#define SESS_LEADER(p, sessp) ((sessp)->s_leader == (p)) + +#define PIDHASH(pid) (&pidhashtbl[(pid) & pidhash]) +extern LIST_HEAD(pidhashhead, proc) * pidhashtbl; extern u_long pidhash; -#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) -extern LIST_HEAD(pgrphashhead, pgrp) *pgrphashtbl; +#define PGRPHASH(pgid) (&pgrphashtbl[(pgid) & pgrphash]) +extern LIST_HEAD(pgrphashhead, pgrp) * pgrphashtbl; extern u_long pgrphash; +#define SESSHASH(sessid) (&sesshashtbl[(sessid) & sesshash]) +extern LIST_HEAD(sesshashhead, session) * sesshashtbl; +extern u_long sesshash; + extern lck_grp_t * proc_lck_grp; +extern lck_grp_t * proc_fdmlock_grp; +extern lck_grp_t * proc_kqhashlock_grp; +extern lck_grp_t * proc_knhashlock_grp; +extern lck_grp_t * proc_mlock_grp; +extern lck_grp_t * proc_ucred_mlock_grp; +extern lck_grp_t * proc_slock_grp; extern lck_grp_attr_t * proc_lck_grp_attr; extern lck_attr_t * proc_lck_attr; LIST_HEAD(proclist, proc); -extern struct proclist allproc; /* List of all processes. */ -extern struct proclist zombproc; /* List of zombie processes. */ +extern struct proclist allproc; /* List of all processes. */ +extern struct proclist zombproc; /* List of zombie processes. */ + extern struct proc *initproc; -extern void pgdelete(struct pgrp *pgrp); -extern void sessrele(struct session *sess); -extern void procinit(void); +extern void procinit(void); extern void proc_lock(struct proc *); extern void proc_unlock(struct proc *); +extern void proc_spinlock(struct proc *); +extern void proc_spinunlock(struct proc *); +extern void proc_list_lock(void); +extern void proc_list_unlock(void); +extern void proc_klist_lock(void); +extern void proc_klist_unlock(void); extern void proc_fdlock(struct proc *); +extern void proc_fdlock_spin(struct proc *); extern void proc_fdunlock(struct proc *); -__private_extern__ char *proc_core_name(const char *name, uid_t uid, pid_t pid); +extern void proc_fdlock_assert(proc_t p, int assertflags); +extern void proc_ucred_lock(struct proc *); +extern void proc_ucred_unlock(struct proc *); +__private_extern__ int proc_core_name(const char *name, uid_t uid, pid_t pid, + char *cr_name, size_t cr_name_len); extern int isinferior(struct proc *, struct proc *); -extern struct proc *pfind(pid_t); /* Find process by id. */ -__private_extern__ struct proc *pzfind(pid_t); /* Find zombie by id. */ -extern struct pgrp *pgfind(pid_t); /* Find process group by id. */ - -extern int chgproccnt(uid_t uid, int diff); -extern int enterpgrp(struct proc *p, pid_t pgid, int mksess); -extern void fixjobc(struct proc *p, struct pgrp *pgrp, int entering); -extern int inferior(struct proc *p); -extern int leavepgrp(struct proc *p); -extern void resetpriority(struct proc *); -extern void setrunnable(struct proc *); -extern void setrunqueue(struct proc *); -extern int sleep(void *chan, int pri); -extern int tsleep0(void *chan, int pri, const char *wmesg, int timo, int (*continuation)(int)); -extern int tsleep1(void *chan, int pri, const char *wmesg, u_int64_t abstime, int (*continuation)(int)); -extern int msleep0(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, int timo, int (*continuation)(int)); -extern void vfork_return(thread_t th_act, struct proc *p, struct proc *p2, register_t *retval); -extern struct proc * proc_findref(pid_t pid); -extern void proc_dropref(struct proc * p); -extern struct proc * proc_refinternal(proc_t p, int funneled); -extern void proc_dropinternal(struct proc * p, int funneled); - -#endif /* !_SYS_PROC_INTERNAL_H_ */ +__private_extern__ struct proc *pzfind(pid_t); /* Find zombie by id. */ +__private_extern__ struct proc *proc_find_zombref(pid_t); /* Find zombie by id. */ +__private_extern__ void proc_drop_zombref(struct proc * p); /* Find zombie by id. */ + + +extern int chgproccnt(uid_t uid, int diff); +extern void pinsertchild(struct proc *parent, struct proc *child); +extern int setsid_internal(struct proc *p); +#ifndef __cplusplus +extern void setlogin_internal(proc_t p, const char login[static MAXLOGNAME]); +#endif // __cplusplus +extern int setgroups_internal(proc_t p, u_int gidsetsize, gid_t *gidset, uid_t gmuid); +extern int enterpgrp(struct proc *p, pid_t pgid, int mksess); +extern void fixjobc(struct proc *p, struct pgrp *pgrp, int entering); +extern int inferior(struct proc *p); +extern int leavepgrp(struct proc *p); +extern void resetpriority(struct proc *); +extern void setrunnable(struct proc *); +extern void setrunqueue(struct proc *); +extern int sleep(void *chan, int pri); +extern int tsleep0(void *chan, int pri, const char *wmesg, int timo, int (*continuation)(int)); +extern int tsleep1(void *chan, int pri, const char *wmesg, u_int64_t abstime, int (*continuation)(int)); +extern int msleep0(void *chan, lck_mtx_t *mtx, int pri, const char *wmesg, int timo, int (*continuation)(int)); +extern void vfork_return(struct proc *child, int32_t *retval, int rval); +extern int exit1(struct proc *, int, int *); +extern int exit1_internal(struct proc *, int, int *, boolean_t, boolean_t, int); +extern int exit_with_reason(struct proc *, int, int *, boolean_t, boolean_t, int, struct os_reason *); +extern int fork1(proc_t, thread_t *, int, coalition_t *); +extern void vfork_exit_internal(struct proc *p, int rv, int forced); +extern void proc_reparentlocked(struct proc *child, struct proc * newparent, int cansignal, int locked); + +extern proc_t proc_findinternal(int pid, int locked); +extern proc_t proc_findthread(thread_t thread); +extern void proc_refdrain(proc_t); +extern proc_t proc_refdrain_with_refwait(proc_t p, boolean_t get_ref_and_allow_wait); +extern void proc_refwake(proc_t p); +extern void proc_childdrainlocked(proc_t); +extern void proc_childdrainstart(proc_t); +extern void proc_childdrainend(proc_t); +extern void proc_checkdeadrefs(proc_t); +struct proc *pfind_locked(pid_t); +extern struct pgrp *pgfind(pid_t); +extern void pg_rele(struct pgrp * pgrp); +extern struct session * session_find_internal(pid_t sessid); +extern struct pgrp * proc_pgrp(proc_t); +extern struct pgrp * tty_pgrp(struct tty * tp); +extern struct pgrp * pgfind_internal(pid_t); +extern struct session * proc_session(proc_t); +extern void pgrp_lock(struct pgrp * pgrp); +extern void pgrp_unlock(struct pgrp * pgrp); +extern void session_lock(struct session * sess); +extern void session_unlock(struct session * sess); +extern struct session * pgrp_session(struct pgrp * pgrp); +extern void session_rele(struct session *sess); +extern int isbackground(proc_t p, struct tty *tp); +extern proc_t proc_parent(proc_t); +extern proc_t proc_parentholdref(proc_t); +extern int proc_parentdropref(proc_t, int); +int itimerfix(struct timeval *tv); +int itimerdecr(struct proc * p, struct itimerval *itp, int usec); +void proc_free_realitimer(proc_t proc); +int timespec_is_valid(const struct timespec *); +void proc_signalstart(struct proc *, int locked); +void proc_signalend(struct proc *, int locked); +int proc_transstart(struct proc *, int locked, int non_blocking); +void proc_transcommit(struct proc *, int locked); +void proc_transend(struct proc *, int locked); +int proc_transwait(struct proc *, int locked); +void proc_rele_locked(struct proc * p); +struct proc *proc_ref_locked(struct proc * p); +void proc_knote(struct proc * p, long hint); +void proc_knote_drain(struct proc *p); +void proc_setregister(proc_t p); +void proc_resetregister(proc_t p); +/* returns the first thread_t in the process, or NULL XXX for NFS, DO NOT USE */ +thread_t proc_thread(proc_t); +extern int proc_pendingsignals(proc_t, sigset_t); +int proc_getpcontrol(int pid, int * pcontrolp); +int proc_dopcontrol(proc_t p); +int proc_resetpcontrol(int pid); +#if PSYNCH +void pth_proc_hashinit(proc_t); +void pth_proc_hashdelete(proc_t); +void pth_global_hashinit(void); +extern thread_call_t psynch_thcall; +void psynch_wq_cleanup(__unused void * param, __unused void * param1); +extern lck_mtx_t * pthread_list_mlock; +#endif /* PSYNCH */ +struct uthread * current_uthread(void); + +/* process iteration */ + +#define ALLPROC_FOREACH(var) \ + LIST_FOREACH((var), &allproc, p_list) + +#define ZOMBPROC_FOREACH(var) \ + LIST_FOREACH((var), &zombproc, p_list) + +#define PGMEMBERS_FOREACH(group, var) \ + LIST_FOREACH((var), &((struct pgrp *)(group))->pg_members, p_pglist) + +#define PCHILDREN_FOREACH(parent, var) \ + LIST_FOREACH((var), &(((struct proc *)(parent))->p_children), p_sibling) + +typedef int (*proc_iterate_fn_t)(proc_t, void *); + +/* + * These are the only valid return values of `callout` functions provided to + * process iterators. + * + * CLAIMED returns expect the caller to call proc_rele on the proc. DONE + * returns stop iterating processes early. + */ +#define PROC_RETURNED (0) +#define PROC_RETURNED_DONE (1) +#define PROC_CLAIMED (2) +#define PROC_CLAIMED_DONE (3) + +/* + * pgrp_iterate walks the provided process group, calling `filterfn` with + * `filterarg` for each process. For processes where `filterfn` returned + * non-zero, `callout` is called with `arg`. If `PGRP_DROPREF` is supplied in + * `flags`, a reference will be dropped from the process group after obtaining + * the list of processes to call `callout` on. + * + * `PGMEMBERS_FOREACH` might also be used under the pgrp_lock to achieve a + * similar effect. + */ +#define PGRP_DROPREF (1) + +extern void pgrp_iterate(struct pgrp *pgrp, unsigned int flags, proc_iterate_fn_t callout, void *arg, proc_iterate_fn_t filterfn, void *filterarg); + +/* + * proc_iterate walks the `allproc` and/or `zombproc` lists, calling `filterfn` + * with `filterarg` for each process. For processes where `filterfn` returned + * non-zero, `callout` is called with `arg`. If the `PROC_NOWAITTRANS` flag is + * set, this function waits for transitions. + * + * `ALLPROC_FOREACH` or `ZOMBPROC_FOREACH` might also be used under the + * `proc_list_lock` to achieve a similar effect. + */ +#define PROC_ALLPROCLIST (1U << 0) /* walk the allproc list (processes not yet exited) */ +#define PROC_ZOMBPROCLIST (1U << 1) /* walk the zombie list */ +#define PROC_NOWAITTRANS (1U << 2) /* do not wait for transitions (checkdirs only) */ + +extern void proc_iterate(unsigned int flags, proc_iterate_fn_t callout, void *arg, proc_iterate_fn_t filterfn, void *filterarg); + +/* + * proc_childrenwalk walks the children of process `p`, calling `callout` for + * each one. + * + * `PCHILDREN_FOREACH` might also be used under the `proc_list_lock` to achieve + * a similar effect. + */ +extern void proc_childrenwalk(proc_t p, proc_iterate_fn_t callout, void *arg); + +/* + * proc_rebootscan should only be used by kern_shutdown.c + */ +extern void proc_rebootscan(proc_iterate_fn_t callout, void *arg, proc_iterate_fn_t filterfn, void *filterarg); + +pid_t dtrace_proc_selfpid(void); +pid_t dtrace_proc_selfppid(void); +uid_t dtrace_proc_selfruid(void); + +#endif /* !_SYS_PROC_INTERNAL_H_ */