Piper's Pit BBS/FTP: ibm 0010

home *** CD-ROM | disk | FTP | other *** search

/ Piper's Pit BBS/FTP: ibm 0010 - 0019 / ibm0010-0019 / ibm0010.tar / ibm0010 / UNIX3862.ZIP / U386-06.ZIP / U386-6.TD0 / usr / include / sys / user.h < prev next >

Wrap

Text File | 1988-06-26 | 11.7 KB | 368 lines

/* Copyright (c) 1984, 1986, 1987, 1988 AT&T */ /* All Rights Reserved */ /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */ /* The copyright notice above does not evidence any */ /* actual or intended publication of such source code. */ /* Copyright (c) 1987, 1988 Microsoft Corporation */ /* All Rights Reserved */ /* This Module contains Proprietary Information of Microsoft */ /* Corporation and should be treated as Confidential. */ #ident "@(#)head.sys:user.h 1.5.1.5" /* * The user structure. * One allocated per process. * Contains all per process data that doesn't need to be referenced * while the process is swapped. * The user block is p->p_usize*click bytes long; resides at virtual kernel * address 0xE0000000 for the 386; * contains the system stack per user for exec system call only; * is cross referenced with the proc structure for the same process. * ************************ NOTE -- NOTE **************************** * * WHEN THIS HEADER CHANGES, BOTH ml/misc.s AND ml/ttrap.s MUST BE * EXAMINED FOR ANY DEPENDENCIES UPON OFFSETS WITHIN THE UBLOCK. * IN PARTICULAR - .SET's ARE DONE ON: * pr_base, * pr_size, * pr_off, and * pr_scale * ********************************************************************** * */ #define PSARGSZ 80 /* Space in u-block for exec arguments */ /* Used by ps command */ #define PSCOMSIZ DIRSIZ /* For the time being set PSCOMSIZ */ /* to DIRSIZ until we can get rid of */ /* struct direct u_dent */ #define SYSMASKLEN 4 /* Number of longs in syscall bit masks */ #define KSTKSZ 4096 typedef struct user { char u_stack[KSTKSZ];/* kernel stack */ struct tss386 *u_tss; /* pointer to user TSS */ ushort u_sztss; /* size of tss (including bit map) */ char u_sigfault; /* catch general protection violations caused by user modifying his stack where the old state info is kept */ char u_usigfailed; /* allows the user to know that he caused a general protection violation by modifying his register save area used when the user was allowed to do his own signal processing */ ulong u_sub; /* stack upper bound. The address of the first byte of the first page of user stack allocated so far */ char u_filler1[40]; /* DON'T TOUCH--this is used by * conditionally-compiled code in iget.c * which checks consistency of inode locking * and unlocking. Name change to follow in * a later release. */ int u_caddrflt; /* Ptr to function to handle */ /* user space external memory */ /* faults encountered in the */ /* kernel. */ char u_nshmseg; /* Nbr of shared memory */ /* currently attached to the */ /* process. */ struct rem_ids { /* for exec'ing REMOTE text */ ushort ux_uid; /* uid of exec'd file */ ushort ux_gid; /* group of exec'd file */ ushort ux_mode; /* file mode (set uid, etc. */ } u_exfile; char *u_comp; /* pointer to current component */ char *u_nextcp; /* pointer to beginning of next */ /* following for Distributed UNIX */ ushort u_rflags; /* flags for distripution */ int u_sysabort; /* Debugging: if set, abort syscall */ int u_systrap; /* Are any syscall mask bits set? */ int u_syscall; /* system call number */ int u_mntindx; /* mount index from sysid */ struct sndd *u_gift; /* gift from message */ long u_rcstat; /* Client cache status flags */ ulong u_userstack; struct response *u_copymsg; /* copyout unfinished business */ struct msgb *u_copybp; /* copyin premeditated send */ char *u_msgend; /* last byte of copymsg + 1 */ /* end of Distributed UNIX */ long u_bsize; /* block size of device */ char u_psargs[PSARGSZ]; /* arguments from exec */ int u_pgproc; /* use by the MAU driver */ time_t u_ageinterval; /* pageing ageing countdown counter */ label_t u_qsav; /* label variable for quits and */ /* interrupts */ char u_segflg; /* IO flag: 0:user D; 1:system; */ /* 2:user I */ unchar u_error; /* return error code */ ushort u_uid; /* effective user id */ ushort u_gid; /* effective group id */ ushort u_ruid; /* real user id */ ushort u_rgid; /* real group id */ struct proc *u_procp; /* pointer to proc structure */ int *u_ap; /* pointer to arglist */ union { /* syscall return values */ struct { int r_val1; int r_val2; }r_reg; off_t r_off; time_t r_time; } u_r; caddr_t u_base; /* base address for IO */ unsigned u_count; /* bytes remaining for IO */ off_t u_offset; /* offset in file for IO */ short u_fmode; /* file mode for IO */ ushort u_pbsize; /* Bytes in block for IO */ ushort u_pboff; /* offset in block for IO */ dev_t u_pbdev; /* real device for IO */ daddr_t u_rablock; /* read ahead block address */ short u_errcnt; /* syscall error count */ struct inode *u_cdir; /* current directory */ struct inode *u_rdir; /* root directory */ caddr_t u_dirp; /* pathname pointer */ struct direct u_dent; /* current directory entry */ struct inode *u_pdir; /* inode of parent directory */ /* of dirp */ char *u_pofile; /* Ptr to open file flag array. */ struct inode *u_ttyip; /* inode of controlling tty (streams) */ int u_arg[6]; /* arguments to current system call */ unsigned u_tsize; /* text size (clicks) */ unsigned u_dsize; /* data size (clicks) */ unsigned u_ssize; /* stack size (clicks) */ void (*u_signal[MAXSIG])(); /* disposition of signals */ void (*u_sigreturn)(); /* for cleanup */ time_t u_utime; /* this process user time */ time_t u_stime; /* this process system time */ time_t u_cutime; /* sum of childs' utimes */ time_t u_cstime; /* sum of childs' stimes */ int *u_ar0; /* address of users saved R0 */ /* * The offsets of these elements must be reflected in ttrap.s and misc.s */ struct { /* profile arguments */ short *pr_base; /* buffer base */ unsigned pr_size; /* buffer size */ unsigned pr_off; /* pc offset */ unsigned pr_scale; /* pc scaling */ } u_prof; short *u_ttyp; /* pointer to pgrp in "tty" struct */ dev_t u_ttyd; /* controlling tty dev */ ulong u_renv; /* runtime environment. */ /* for meaning of bits: */ /* 0-15 see x_renv (x.out.h) */ /* 16-23 see x_cpu (x.out.h) */ /* 24-31 see below */ /* * Executable file info. */ struct exdata { struct inode *ip; long ux_tsize; /* text size */ long ux_dsize; /* data size */ long ux_bsize; /* bss size */ long ux_lsize; /* lib size */ long ux_nshlibs; /* number of shared libs needed */ short ux_mag; /* magic number MUST be here */ long ux_toffset; /* file offset to raw text */ long ux_doffset; /* file offset to raw data */ long ux_loffset; /* file offset to lib sctn */ long ux_txtorg; /* start addr. of text in mem */ long ux_datorg; /* start addr. of data in mem */ long ux_entloc; /* entry location */ ulong ux_renv; /* runtime environment */ } u_exdata; long u_execsz; char u_comm[PSCOMSIZ]; time_t u_start; time_t u_ticks; long u_mem; long u_ior; long u_iow; long u_iosw; long u_ioch; char u_acflag; short u_cmask; /* mask for file creation */ daddr_t u_limit; /* maximum write address */ short u_lock; /* process/text locking flags */ /* floating point support variables */ char u_fpvalid; /* flag if saved state is valid */ char u_weitek; /* flag if process uses weitek chip */ union { struct fpstate /* floating point extension state */ { int state[27];/* 287/387 saved state */ int status; /* status word saved at exception */ } u_fpstate; struct fp_emul { char fp_emul[246]; /* (extras for emulator) */ char fp_epad[2]; } fp_emul; } u_fps; long u_weitek_reg[33]; /* bits needed to save weitek state */ /* NOTE: If the WEITEK is actually */ /* present, only 32 longs will be */ /* used, but if it is not, the */ /* emulator will need 33. */ int u_fpintgate[2]; /* fp intr gate descriptor image */ #define WEITEK_CONTEXT 0 #define WEITEK_CAE 0xFFFFFF00 /* clear accum. exception byte */ /* i286 emulation variables */ int *u_callgatep; /* pointer to call gate in gdt */ int u_callgate[2]; /* call gate descriptor image */ int u_ldtmodified; /* if set, LDT was modified */ ushort u_ldtlimit; /* current size (index) of ldt */ /* Flag single-step of lcall for a system call. */ /* The signal is delivered after the system call*/ char u_debugpend; /* SIGTRAP pending for this proc */ /* debug registers, accessible by ptrace(2) but monitored by kernel */ char u_debugon; /* Debug registers in use, set by kernel */ int u_debugreg[8]; long u_entrymask[SYSMASKLEN]; /* syscall stop-on-entry mask */ long u_exitmask[SYSMASKLEN]; /* syscall stop-on-exit mask */ struct file *u_ofile[1]; /* Start of array of pointers */ /* to file table entries for */ /* open files. */ } user_t; extern struct user u; #define u_exuid u_exfile.ux_uid #define u_exgid u_exfile.ux_gid #define u_exmode u_exfile.ux_mode #define u_rval1 u_r.r_reg.r_val1 #define u_rval2 u_r.r_reg.r_val2 #define u_roff u_r.r_off #define u_rtime u_r.r_time /* rcstat values: for client caching */ #define U_RCACHE 0x1 /* ioflag values: Read/Write, User/Kernel, Ins/Data */ #define U_WUD 0 #define U_RUD 1 #define U_WKD 2 #define U_RKD 3 #define EXCLOSE 01 /* distribution: values for u_rflags */ #define FREMOTE 0x0002 /* file is remote */ #define U_RSYS 0x0004 /* system call has gone remote */ #define U_DOTDOT 0x0200 #define U_RCOPY 0x0400 /* used by copyout for non-delay copy */ /* u_spop values */ #define U_SPOP_MAU 0x1L /* * defines for bits 24-31 of u_renv and various macros for accessing * fields of u_renv. All bits not currently defined are reserved * for future expansion. */ #define U_ISCOFF 0x1000000 #define U_RENVMASK 0x3000000 /* runtime environment bits */ #define U_CPUTYPE (XC_CPU << 16) #define U_IS386 (XC_386 << 16) #define U_ISWSWAP (XC_WSWAP << 16) /* binary types */ #define isCOFF ((u.u_renv & U_RENVMASK) == U_ISCOFF) /* 386 COFF */ #define isXOUT ((u.u_renv & U_RENVMASK) == 0) /* 386 x.out */ #define IS386() (((u.u_renv >> 16) & XC_CPU) == XC_386) /* * The following define is used to indicate that the program being * exec'd is one of the 286 emulators. This bit is set in u_renv. */ #define UE_EMUL 0x4000000 /* 286 emulator */ #define is286EMUL ((u.u_renv & UE_EMUL) == UE_EMUL) /* * Defines for badvise bits of u_renv and various macros for accessing * these bits. */ #define UB_PRE_SV 0x8000000 /* badvise pre-System V */ #define UB_XOUT 0x10000000 /* badvise x.out */ #define UB_LOCKING 0x20000000 /* badvise locking() system call */ /* (for kernel use only) */ #define UB_FCNTL 0x40000000 /* badvise fcntl() system call */ /* (for kernel use only) */ #define UB_XSDSWTCH 0x80000000 /* badvise XENIX shared data context */ /* switching */ /* badvise indicates x.out behavior */ #define BADVISE_XOUT ((u.u_renv & UB_XOUT) == UB_XOUT) /* badvise indicates pre-System V behavior */ #define BADVISE_PRE_SV ((u.u_renv & UB_PRE_SV) == UB_PRE_SV) /* badvise indicates XENIX locking() call */ #define ISLOCKING ((u.u_renv & UB_LOCKING) == UB_LOCKING) /* badvise indicates fcntl() call */ #define ISFCNTL ((u.u_renv & UB_FCNTL) == UB_FCNTL) /* badvise indicates XENIX shared data * context switching is enabled */ #define BADVISE_XSDSWTCH ((u.u_renv & UB_XSDSWTCH) == UB_XSDSWTCH) /* x.out binary or badvise indicates x.out */ #define VIRTUAL_XOUT (isXOUT || BADVISE_XOUT)