X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/89b3af67bb32e691275bf6fa803d1834b2284115..36401178fd6817c043cc00b0c00c7f723e58efae:/bsd/sys/user.h diff --git a/bsd/sys/user.h b/bsd/sys/user.h index 636dac0e5..89dd1cd4f 100644 --- a/bsd/sys/user.h +++ b/bsd/sys/user.h @@ -84,35 +84,46 @@ #ifdef __APPLE_API_PRIVATE #include +/* + * 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 */ +}; + +/* XXX Deprecated: xnu source compatability */ +#define uu_ucred uu_context.vc_ucred + +#ifdef BSD_KERNEL_PRIVATE /* * Per-thread U area. */ + struct uthread { /* syscall parameters, results and catches */ - u_int64_t uu_arg[8]; /* arguments to current system call */ + user_addr_t uu_arg[8]; /* arguments to current system call */ int *uu_ap; /* pointer to arglist */ - int uu_rval[2]; + int uu_rval[2]; /* thread exception handling */ int uu_exception; - int uu_code; /* ``code'' to trap */ - int uu_subcode; + mach_exception_code_t uu_code; /* ``code'' to trap */ + mach_exception_subcode_t uu_subcode; char uu_cursig; /* p_cursig for exc. */ - /* support for select - across system calls */ + /* support for syscalls which use continuations */ 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; + u_int32_t *ibits, *obits; /* bits to select on */ + uint nbytes; /* number of bytes in ibits and obits */ + u_int64_t abstime; + int poll; + int error; + int count; + int kfcount; + char * wql; } uu_select; /* saved state for select() */ - /* to support continuations */ + /* to support kevent 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 */ @@ -125,44 +136,95 @@ struct uthread { int fd; /* filedescriptor for kq */ register_t *retval; /* place to store return val */ user_addr_t eventlist; /* user-level event list address */ + size_t eventsize; /* user-level event size (LP64) */ int eventcount; /* user-level event count */ int eventout; /* number of events output */ } ss_kevent; /* saved state for kevent() */ - } uu_state; + } uu_kevent; + struct _kauth { + user_addr_t message; /* message in progress */ + } uu_kauth; /* 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 */ int uu_flag; + int uu_iopol_disk; /* disk I/O policy */ struct proc * uu_proc; void * uu_userstate; + wait_queue_set_t uu_wqset; /* cached across select calls */ + size_t uu_allocsize; /* ...size of select cache */ 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; + struct vfs_context uu_context; /* thread + cred */ sigset_t uu_vforkmask; /* saved signal mask during vfork */ 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 */ - + /* network support for dlil layer locking */ u_int32_t dlil_incremented_read; lck_mtx_t *uu_mtx; - int uu_lowpri_delay; + int uu_lowpri_window; - struct ucred *uu_ucred; /* per thread credential */ + struct user_sigaltstack uu_sigstk; int uu_defer_reclaims; vnode_t uu_vreclaims; - struct user_sigaltstack uu_sigstk; + int uu_notrigger; /* XXX - flag for autofs */ + vnode_t uu_cdir; /* per thread CWD */ + int uu_dupfd; /* fd in fdesc_open/dupfdopen */ + #ifdef JOE_DEBUG int uu_iocount; int uu_vpindex; void * uu_vps[32]; #endif +#if CONFIG_DTRACE + uint32_t t_dtrace_errno; /* Most recent errno */ + 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; + unsigned long _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 +#endif /* CONFIG_DTRACE */ + void * uu_threadlist; + mount_t v_mount; }; typedef struct uthread * uthread_t; @@ -174,12 +236,19 @@ 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_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_BACKGROUND 0x00000800 /* this thread is in background state */ #define UT_VFORK 0x02000000 /* thread has vfork children */ #define UT_SETUID 0x04000000 /* thread is settugid() */ #define UT_WASSETUID 0x08000000 /* thread was settugid() (in vfork) */ +#endif /* BSD_KERNEL_PRIVATE */ + #endif /* __APPLE_API_PRIVATE */ #endif /* KERNEL */