X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/d7e50217d7adf6e52786a38bcaa4cd698cb9a79e..0a7de7458d150b5d4dffc935ba399be265ef0a1a:/bsd/sys/user.h diff --git a/bsd/sys/user.h b/bsd/sys/user.h index 099080040..4c79d0d8f 100644 --- a/bsd/sys/user.h +++ b/bsd/sys/user.h @@ -1,17 +1,20 @@ /* - * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2018 Apple Inc. All rights reserved. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * @APPLE_LICENSE_HEADER_START@ - * - * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. - * * 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. Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this - * file. - * + * 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, @@ -19,8 +22,8 @@ * 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_LICENSE_HEADER_END@ + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */ /* @@ -58,10 +61,11 @@ * @(#)user.h 8.2 (Berkeley) 9/23/93 */ -#ifndef _SYS_USER_H_ -#define _SYS_USER_H_ +#ifndef _SYS_USER_H_ +#define _SYS_USER_H_ #include +struct waitq_set; #ifndef KERNEL /* stuff that *used* to be included by user.h, or is now needed */ #include @@ -70,83 +74,309 @@ #include #include #endif +#ifdef XNU_KERNEL_PRIVATE +#include #include +#include #include -#include /* XXX */ +#endif +#include /* XXX */ #include - -#ifdef KERNEL +#ifdef KERNEL +#ifdef BSD_KERNEL_PRIVATE +#include /* for uu_kwe entry */ +#include +#endif /* BSD_KERNEL_PRIVATE */ #ifdef __APPLE_API_PRIVATE +#include + +#if !defined(__LP64__) || defined(XNU_KERNEL_PRIVATE) +/* + * VFS context structure (part of uthread) + */ +struct vfs_context { + thread_t vc_thread; /* pointer to Mach thread */ + kauth_cred_t vc_ucred; /* per thread credential */ +}; + +#endif /* !__LP64 || XNU_KERNEL_PRIVATE */ + +#ifdef BSD_KERNEL_PRIVATE +/* XXX Deprecated: xnu source compatability */ +#define uu_ucred uu_context.vc_ucred + +struct label; /* MAC label dummy struct */ + +#define MAXTHREADNAMESIZE 64 /* * Per-thread U area. */ -struct uthread { - int *uu_ar0; /* address of users saved R0 */ +struct uthread { /* syscall parameters, results and catches */ - int uu_arg[8]; /* arguments to current system call */ - int *uu_ap; /* pointer to arglist */ - int uu_rval[2]; + u_int64_t uu_arg[8]; /* arguments to current system call */ + int uu_rval[2]; + char uu_cursig; /* p_cursig for exc. */ + unsigned int syscall_code; /* current syscall code */ /* thread exception handling */ - int uu_code; /* ``code'' to trap */ - char uu_cursig; /* p_cursig for exc. */ - int XXX_dummy; /* NOT USED LEFT FOR COMPATIBILITY. */ + int uu_exception; + mach_exception_code_t uu_code; /* ``code'' to trap */ + mach_exception_subcode_t uu_subcode; + /* support for syscalls which use continuations */ union { - struct _select { - u_int32_t *ibits, *obits; /* bits to select on */ - uint nbytes; /* number of bytes in ibits and obits */ + struct _select_data { u_int64_t abstime; - int poll; - int error; + uint64_t *wqp; int count; - int nfcount; - char * wql; - int allocsize; /* select allocated size */ - } ss_select; /* saved state for select() */ - struct _wait { - int f; - } ss_wait; /* saved state for wait?() */ - struct _owait { - int pid; - int *status; - int options; - struct rusage *rusage; - } ss_owait; - int uu_nfs_myiod; /* saved state for nfsd */ - } uu_state; - - /* internal support for continuation framework */ - int (*uu_continuation)(int); - int uu_pri; - int uu_timo; - int uu_flag; - struct proc * uu_proc; + struct select_nocancel_args *args; /* original syscall arguments */ + int32_t *retval; /* place to store return val */ + } uus_select_data; + + struct _kqueue_scan { + kevent_callback_t call; /* per-event callback */ + kqueue_continue_t cont; /* whole call continuation */ + filt_process_data_t process_data; /* needed for filter processing */ + uint64_t deadline; /* computed deadline for operation */ + void *data; /* caller's private data */ + } uus_kqueue_scan; /* saved state for kevent_scan() */ + + struct _kevent { + struct _kqueue_scan scan; /* space for the generic data */ + struct fileproc *fp; /* fileproc we hold iocount on */ + int fd; /* fd for fileproc (if held) */ + int eventcount; /* user-level event count */ + int eventout; /* number of events output */ + struct filt_process_s process_data; /* space for process data fed thru */ + int32_t *retval; /* place to store return val */ + user_addr_t eventlist; /* user-level event list address */ + uint64_t data_available; /* [user/kernel] addr of in/out size */ + } uus_kevent; /* saved state for kevent() */ + + struct _kevent_register { + struct kevent_internal_s kev; /* the kevent to maybe copy out */ + struct knote *knote; /* the knote used for the wait */ + struct fileproc *fp; /* fileproc we hold iocount on */ + thread_t handoff_thread; /* thread we handed off to, has +1 */ + struct kqueue *kq; + int fd; /* fd for fileproc (if held) */ + int eventcount; /* user-level event count */ + int eventout; /* number of events output */ + unsigned int flags; /* flags for kevent_copyout() */ + int32_t *retval; /* place to store return val */ + user_addr_t ueventlist; /* the user-address to copyout to */ + } uus_kevent_register; /* saved for EVFILT_WORKLOOP wait */ + + struct _kauth { + user_addr_t message; /* message in progress */ + } uus_kauth; + + struct ksyn_waitq_element uus_kwe; /* user for pthread synch */ + + struct _waitid_data { + struct waitid_nocancel_args *args; /* original syscall arguments */ + int32_t *retval; /* place to store return val */ + } uus_waitid_data; + + struct _wait4_data { + struct wait4_nocancel_args *args; /* original syscall arguments */ + int32_t *retval; /* place to store return val */ + } uus_wait4_data; + + struct _workq_park_data { + uint64_t idle_stamp; + uint64_t workloop_params; + uint32_t fulfilled_snapshot; + uint32_t yields; + void *thread_request; /* request being fulfilled, for tracing only */ + uint32_t upcall_flags; + bool has_stack; + thread_qos_t qos; + } uus_workq_park_data; /* saved for parked workq threads */ + + struct _ulock_wait_data { + thread_t owner_thread; + thread_t old_owner; + int32_t *retval; + uint flags; + } uus_ulock_wait_data; + } uu_save; + + /* Persistent memory allocations across system calls */ + struct _select { + u_int32_t *ibits, *obits; /* bits to select on */ + uint nbytes; /* number of bytes in ibits and obits */ + } uu_select; /* saved state for select() */ + + /* internal support for continuation framework */ + int (*uu_continuation)(int); + int uu_pri; + int uu_timo; + caddr_t uu_wchan; /* sleeping thread wait channel */ + const char *uu_wmesg; /* ... wait message */ + struct proc *uu_proc; + thread_t uu_thread; void * uu_userstate; - wait_queue_sub_t uu_wqsub; - sigset_t uu_siglist; /* signals pending for the thread */ - sigset_t uu_sigwait; /* sigwait on this thread*/ - sigset_t uu_sigmask; /* signal mask for the thread */ - sigset_t uu_oldmask; /* signal mask saved before sigpause */ - thread_act_t uu_act; - sigset_t uu_vforkmask; /* saved signal mask during vfork */ - - TAILQ_ENTRY(uthread) uu_list; /* List of uthreads in proc */ + struct waitq_set *uu_wqset; /* waitq state cached across select calls */ + size_t uu_wqstate_sz; /* ...size of uu_wqset buffer */ + int uu_flag; + sigset_t uu_siglist; /* signals pending for the thread */ + sigset_t uu_sigwait; /* sigwait on this thread*/ + sigset_t uu_sigmask; /* signal mask for the thread */ + sigset_t uu_oldmask; /* signal mask saved before sigpause */ + sigset_t uu_vforkmask; /* saved signal mask during vfork */ + struct vfs_context uu_context; /* thread + cred */ + + TAILQ_ENTRY(uthread) uu_list; /* List of uthreads in proc */ + + struct kaudit_record *uu_ar; /* audit record */ + struct task* uu_aio_task; /* target task for async io */ + + lck_mtx_t *uu_mtx; + + lck_spin_t uu_rethrottle_lock; /* locks was_rethrottled and is_throttled */ + TAILQ_ENTRY(uthread) uu_throttlelist; /* List of uthreads currently throttled */ + void * uu_throttle_info; /* pointer to throttled I/Os info */ + int uu_on_throttlelist; + int uu_lowpri_window; + /* These boolean fields are protected by different locks */ + bool uu_was_rethrottled; + bool uu_is_throttled; + bool uu_throttle_bc; + + u_int32_t uu_network_marks; /* network control flow marks */ + + struct kern_sigaltstack uu_sigstk; + vnode_t uu_vreclaims; + vnode_t uu_cdir; /* per thread CWD */ + int uu_dupfd; /* fd in fdesc_open/dupfdopen */ + int uu_defer_reclaims; + + /* + * Bound kqueue request. This field is only cleared by the current thread, + * hence can be dereferenced safely by the current thread without locks. + */ + struct kqrequest *uu_kqr_bound; + TAILQ_ENTRY(uthread) uu_workq_entry; + mach_vm_offset_t uu_workq_stackaddr; + mach_port_name_t uu_workq_thport; + struct uu_workq_policy { + uint16_t qos_req : 4; /* requested QoS */ + uint16_t qos_max : 4; /* current acked max qos */ + uint16_t qos_override : 4; /* received async override */ + uint16_t qos_bucket : 4; /* current acked bucket */ + } uu_workq_pri; + uint8_t uu_workq_flags; + kq_index_t uu_kqueue_override; + +#ifdef JOE_DEBUG + int uu_iocount; + int uu_vpindex; + void *uu_vps[32]; + void *uu_pcs[32][10]; +#endif +#if CONFIG_WORKLOOP_DEBUG +#define UU_KEVENT_HISTORY_COUNT 32 +#define UU_KEVENT_HISTORY_WRITE_ENTRY(uth, ...) ({ \ + struct uthread *__uth = (uth); \ + unsigned int __index = __uth->uu_kevent_index++; \ + __uth->uu_kevent_history[__index % UU_KEVENT_HISTORY_COUNT] = \ + (struct uu_kevent_history)__VA_ARGS__; \ + }) + struct uu_kevent_history { + uint64_t uu_kqid; + struct kqueue *uu_kq; + int uu_error, uu_nchanges, uu_nevents; + unsigned int uu_flags; + } uu_kevent_history[UU_KEVENT_HISTORY_COUNT]; + unsigned int uu_kevent_index; +#endif + int uu_proc_refcount; +#if PROC_REF_DEBUG +#define NUM_PROC_REFS_TO_TRACK 32 +#define PROC_REF_STACK_DEPTH 10 + int uu_pindex; + void * uu_proc_ps[NUM_PROC_REFS_TO_TRACK]; + uintptr_t uu_proc_pcs[NUM_PROC_REFS_TO_TRACK][PROC_REF_STACK_DEPTH]; +#endif + +#if CONFIG_DTRACE + uint32_t t_dtrace_errno; /* Most recent errno */ + siginfo_t t_dtrace_siginfo; + uint64_t t_dtrace_resumepid; /* DTrace's pidresume() pid */ + uint8_t t_dtrace_stop; /* indicates a DTrace desired stop */ + uint8_t t_dtrace_sig; /* signal sent via DTrace's raise() */ + + union __tdu { + struct __tds { + uint8_t _t_dtrace_on; /* hit a fasttrap tracepoint */ + uint8_t _t_dtrace_step; /* about to return to kernel */ + uint8_t _t_dtrace_ret; /* handling a return probe */ + uint8_t _t_dtrace_ast; /* saved ast flag */ +#if __sol64 || defined(__APPLE__) + uint8_t _t_dtrace_reg; /* modified register */ +#endif + } _tds; + u_int32_t _t_dtrace_ft; /* bitwise or of these flags */ + } _tdu; +#define t_dtrace_ft _tdu._t_dtrace_ft +#define t_dtrace_on _tdu._tds._t_dtrace_on +#define t_dtrace_step _tdu._tds._t_dtrace_step +#define t_dtrace_ret _tdu._tds._t_dtrace_ret +#define t_dtrace_ast _tdu._tds._t_dtrace_ast +#if __sol64 || defined(__APPLE__) +#define t_dtrace_reg _tdu._tds._t_dtrace_reg +#endif + + user_addr_t t_dtrace_pc; /* DTrace saved pc from fasttrap */ + user_addr_t t_dtrace_npc; /* DTrace next pc from fasttrap */ + user_addr_t t_dtrace_scrpc; /* DTrace per-thread scratch location */ + user_addr_t t_dtrace_astpc; /* DTrace return sequence location */ + + struct dtrace_ptss_page_entry* t_dtrace_scratch; /* scratch space entry */ + +#if __sol64 || defined(__APPLE__) + uint64_t t_dtrace_regv; /* DTrace saved reg from fasttrap */ +#endif + void *t_dtrace_syscall_args; +#endif /* CONFIG_DTRACE */ + char *pth_name; + + /* Document Tracking struct used to track a "tombstone" for a document */ + struct doc_tombstone *t_tombstone; + + struct os_reason *uu_exit_reason; }; typedef struct uthread * uthread_t; /* Definition of uu_flag */ -#define USAS_OLDMASK 0x1 /* need to restore mask before pause */ -#define UNO_SIGMASK 0x2 /* exited thread; invalid sigmask */ -/* Kept same as in proc */ -#define P_VFORK 0x2000000 /* process has vfork children */ +#define UT_SAS_OLDMASK 0x00000001 /* need to restore mask before pause */ +#define UT_NO_SIGMASK 0x00000002 /* exited thread; invalid sigmask */ +#define UT_NOTCANCELPT 0x00000004 /* not a cancelation point */ +#define UT_CANCEL 0x00000008 /* thread marked for cancel */ +#define UT_CANCELED 0x00000010 /* thread cancelled */ +#define UT_CANCELDISABLE 0x00000020 /* thread cancel disabled */ +#define UT_ALTSTACK 0x00000040 /* this thread has alt stack for signals */ +#define UT_THROTTLE_IO 0x00000080 /* this thread issues throttle I/O */ +#define UT_PASSIVE_IO 0x00000100 /* this thread issues passive I/O */ +#define UT_PROCEXIT 0x00000200 /* this thread completed the proc exit */ +#define UT_RAGE_VNODES 0x00000400 /* rapid age any vnodes created by this thread */ +#define UT_KERN_RAGE_VNODES 0x00000800 /* rapid age any vnodes created by this thread (kernel set) */ +/* 0x00001000 unused, used to be UT_BACKGROUND_TRAFFIC_MGT */ +#define UT_ATIME_UPDATE 0x00002000 /* don't update atime for files accessed by this thread */ +#define UT_VFORK 0x02000000 /* thread has vfork children */ +#define UT_SETUID 0x04000000 /* thread is settugid() */ +#define UT_WASSETUID 0x08000000 /* thread was settugid() (in vfork) */ +#define UT_VFORKING 0x10000000 /* thread in vfork() syscall */ + +#endif /* BSD_KERNEL_PRIVATE */ #endif /* __APPLE_API_PRIVATE */ -#endif /* KERNEL */ +#endif /* KERNEL */ /* * Per process structure containing data that isn't needed in core @@ -154,9 +384,9 @@ typedef struct uthread * uthread_t; * This structure may or may not be at the same kernel address * in all processes. */ - -struct user { - /* NOT USED ANYMORE */ + +struct user { + /* NOT USED ANYMORE */ }; -#endif /* !_SYS_USER_H_ */ +#endif /* !_SYS_USER_H_ */