X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/378393581903b274cb7a4d18e0d978071a6b592d..d190cdc3f5544636abb56dc1874be391d3e1b148:/bsd/sys/user.h diff --git a/bsd/sys/user.h b/bsd/sys/user.h index b90a52481..9f612c780 100644 --- a/bsd/sys/user.h +++ b/bsd/sys/user.h @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2012 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_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 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. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * 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. + * 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 */ /* @@ -59,6 +65,7 @@ #define _SYS_USER_H_ #include +struct waitq_set; #ifndef KERNEL /* stuff that *used* to be included by user.h, or is now needed */ #include @@ -67,96 +74,214 @@ #include #include #endif +#ifdef XNU_KERNEL_PRIVATE #include -#ifdef KERNEL_PRIVATE #include #endif #include /* XXX */ #include - + #ifdef KERNEL +#ifdef BSD_KERNEL_PRIVATE +#include /* for uu_kwe entry */ +#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 */ - /* syscall parameters, results and catches */ u_int64_t uu_arg[8]; /* arguments to current system call */ - int *uu_ap; /* pointer to arglist */ int uu_rval[2]; + unsigned int syscall_code; /* current syscall code */ /* thread exception handling */ - int uu_code; /* ``code'' to trap */ + mach_exception_code_t uu_code; /* ``code'' to trap */ + mach_exception_subcode_t uu_subcode; + int uu_exception; char uu_cursig; /* p_cursig for exc. */ - /* support for select - across system calls */ - struct _select { - u_int32_t *ibits, *obits; /* bits to select on */ - uint nbytes; /* number of bytes in ibits and obits */ - wait_queue_set_t wqset; /* cached across select calls */ - size_t allocsize; /* ...size of select cache */ - u_int64_t abstime; - int poll; - int error; - int count; - char * wql; - } uu_select; /* saved state for select() */ - /* to support continuations */ + /* support for syscalls which use continuations */ union { - int uu_nfs_myiod; /* saved state for nfsd */ - struct _kevent_scan { - kevent_callback_t call; /* per-event callback */ - kevent_continue_t cont; /* whole call continuation */ - uint64_t deadline; /* computed deadline for operation */ - void *data; /* caller's private data */ - } ss_kevent_scan; /* saved state for kevent_scan() */ + struct _select_data { + u_int64_t abstime; + uint64_t *wqp; + int count; + struct select_nocancel_args *args; /* original syscall arguments */ + int32_t *retval; /* place to store return val */ + } ss_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 */ + uint8_t servicer_qos_index; /* requested qos index of servicer */ + uint64_t deadline; /* computed deadline for operation */ + void *data; /* caller's private data */ + } ss_kqueue_scan; /* saved state for kevent_scan() */ struct _kevent { - struct _kevent_scan scan;/* space for the generic data */ - struct fileproc *fp; /* fileproc we hold iocount on */ - int fd; /* filedescriptor for kq */ - register_t *retval; /* place to store return val */ - user_addr_t eventlist; /* user-level event list address */ - int eventcount; /* user-level event count */ - int eventout; /* number of events output */ + struct _kqueue_scan scan; /* space for the generic data */ + struct fileproc *fp; /* fileproc we hold iocount on */ + int fd; /* filedescriptor for kq */ + 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 */ } ss_kevent; /* saved state for kevent() */ - } uu_state; + + struct _kauth { + user_addr_t message; /* message in progress */ + } uu_kauth; + + struct ksyn_waitq_element uu_kwe; /* user for pthread synch */ + + struct _waitid_data { + struct waitid_nocancel_args *args; /* original syscall arguments */ + int32_t *retval; /* place to store return val */ + } uu_waitid_data; + + struct _wait4_data { + struct wait4_nocancel_args *args; /* original syscall arguments */ + int32_t *retval; /* place to store return val */ + } uu_wait4_data; + } uu_kevent; + + /* 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; - int uu_flag; + 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; + 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 */ - thread_t uu_act; 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 kaudit_record *uu_ar; /* audit record */ struct task* uu_aio_task; /* target task for async io */ - - /* network support for dlil layer locking */ - u_int32_t dlil_incremented_read; + lck_mtx_t *uu_mtx; - int uu_lowpri_delay; + 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; + boolean_t uu_was_rethrottled; + boolean_t uu_is_throttled; + boolean_t uu_throttle_bc; - struct ucred *uu_ucred; /* per thread credential */ - int uu_defer_reclaims; + 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; + + unsigned int uu_kqueue_bound; /* qos index we are bound to service */ + unsigned int uu_kqueue_flags; /* if so, the flags being using */ #ifdef JOE_DEBUG int uu_iocount; int uu_vpindex; void * uu_vps[32]; + void * uu_pcs[32][10]; +#endif + +#if PROC_REF_DEBUG +#define NUM_PROC_REFS_TO_TRACK 32 +#define PROC_REF_STACK_DEPTH 10 + int uu_proc_refcount; + 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 */ + void * uu_threadlist; + 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; @@ -168,10 +293,20 @@ typedef struct uthread * uthread_t; #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 */ +/* 0x00000800 unused, used to be UT_BACKGROUND */ +/* 0x00001000 unused, used to be UT_BACKGROUND_TRAFFIC_MGT */ #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 */