include/vg_kerneliface.h - platform/external/valgrind - Gitiles


 /*--------------------------------------------------------------------*/
 /*--- A header file defining structures and constants which are    ---*/
 /*--- important at the kernel boundary for this platform.          ---*/
 /*---                                             vg_kerneliface.h ---*/
 /*--------------------------------------------------------------------*/

 /*
    This file is part of Valgrind, an extensible x86 protected-mode
    emulator for monitoring program execution on x86-Unixes.

    Copyright (C) 2000-2004 Julian Seward
       jseward@acm.org

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.

    This program is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307, USA.

    The GNU General Public License is contained in the file COPYING.
 */

 #ifndef __VG_KERNELIFACE_H
 #define __VG_KERNELIFACE_H

 /* This file is ONLY to be included into vg_include.h.  Do not include
    it directly into valgrind source .c files.  This file defines types
    and constants for the kernel interface, and to make that clear
    everything is prefixed VKI. */

 /*--- All the following stuff is correct for Linux kernels 2.2.X and
       2.4.X.
 ---*/

 /* Should really get this from an include file somewhere. */
 #define VKI_BYTES_PER_PAGE_BITS 12
 #define VKI_BYTES_PER_PAGE (1 << VKI_BYTES_PER_PAGE_BITS)

 #define VKI_BYTES_PER_WORD 4
 #define VKI_WORDS_PER_PAGE (VKI_BYTES_PER_PAGE / VKI_BYTES_PER_WORD)


 /* An implementation of signal sets.  These are the same as the sigset
    implementations in the relevant Linux kernels.  Note carefully that
    this has nothing to do with glibc's signal sets.  We work entirely
    at the kernel boundary, so the libc stuff is invisible and
    irrelevant.  */

 /* The following is copied from
    /usr/src/linux-2.4.9-13/include/asm-i386/signal.h */
 #define VKI_KNSIG       64  /* true for linux 2.2.X and 2.4.X */
 #define VKI_KNSIG_BPW   32  /* since we're using UInts */
 #define VKI_KNSIG_WORDS (VKI_KNSIG / VKI_KNSIG_BPW)

 typedef
    struct {
       UInt ws[VKI_KNSIG_WORDS];
    }
    vki_ksigset_t;


 typedef
    struct {
       void*         ksa_handler;
       unsigned long ksa_flags;
       void (*ksa_restorer)(void);
       vki_ksigset_t ksa_mask;
    }
    vki_ksigaction;

 typedef
    struct {
       void* ss_sp;
       Int   ss_flags;
       UInt  ss_size;
    }
    vki_kstack_t;

 #define SI_MAX_SIZE	128
 #define SI_PAD_SIZE	((SI_MAX_SIZE/sizeof(int)) - 3)

 union vki_sigval {
    Int sival_int;
    void *sival_ptr;
 };

 typedef
    struct {
       Int si_signo;
       Int si_errno;
       Int si_code;

       union {
 	 Int _pad[SI_PAD_SIZE];

 	 /* kill() */
 	 struct {
 	    Int _pid;		/* sender's pid */
 	    Short _uid;		/* sender's uid */
 	 } _kill;

 	 /* POSIX.1b timers */
 	 struct {
 	    UInt _timer1;
 	    UInt _timer2;
 	 } _timer;

 	 /* POSIX.1b signals */
 	 struct {
 	    Int _pid;		/* sender's pid */
 	    UShort _uid;		/* sender's uid */
 	    union vki_sigval _sigval;
 	 } _rt;

 	 /* SIGCHLD */
 	 struct {
 	    Int _pid;		/* which child */
 	    UShort _uid;		/* sender's uid */
 	    Int _status;		/* exit code */
 	    Int _utime;
 	    Int _stime;
 	 } _sigchld;

 	 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 	 struct {
 	    void *_addr; /* faulting insn/memory ref. */
 	 } _sigfault;

 	 /* SIGPOLL */
 	 struct {
 	    Int _band;	/* POLL_IN, POLL_OUT, POLL_MSG */
 	    Int _fd;
 	 } _sigpoll;
       } _sifields;
    } vki_ksiginfo_t;

 /* linux-2.6/include/asm-generic/siginfo.h */

 #define VKI_SI_USER	0
 #define VKI_SI_QUEUE	-1
 #define VKI_SI_TKILL	-6

 struct vki_fpreg {
 	UShort significand[4];
 	UShort exponent;
 };

 struct vki_fpxreg {
 	UShort significand[4];
 	UShort exponent;
 	UShort padding[3];
 };

 struct vki_xmmreg {
 	UInt element[4];
 };

 struct vki_fpstate {
 	/* Regular FPU environment */
 	unsigned long 	cw;
 	unsigned long	sw;
 	unsigned long	tag;
 	unsigned long	ipoff;
 	unsigned long	cssel;
 	unsigned long	dataoff;
 	unsigned long	datasel;
 	struct vki_fpreg	_st[8];
 	unsigned short	status;
 	unsigned short	magic;		/* 0xffff = regular FPU data only */

 	/* FXSR FPU environment */
 	unsigned long	_fxsr_env[6];	/* FXSR FPU env is ignored */
 	unsigned long	mxcsr;
 	unsigned long	reserved;
 	struct vki_fpxreg	_fxsr_st[8];	/* FXSR FPU reg data is ignored */
 	struct vki_xmmreg	_xmm[8];
 	unsigned long	padding[56];
 };

 #define X86_FXSR_MAGIC		0x0000

 struct vki_sigcontext {
 	UShort	gs, __gsh;
 	UShort	fs, __fsh;
 	UShort	es, __esh;
 	UShort	ds, __dsh;
 	UInt	edi;
 	UInt	esi;
 	UInt	ebp;
 	UInt	esp;
 	UInt	ebx;
 	UInt	edx;
 	UInt	ecx;
 	UInt	eax;
 	UInt	trapno;
 	UInt	err;
 	UInt	eip;
 	UShort	cs, __csh;
 	UInt	eflags;
 	UInt	esp_at_signal;
 	UShort	ss, __ssh;
 	struct	vki_fpstate * fpstate;
 	UInt	oldmask;
 	UInt	cr2;
 };

 struct vki_ucontext {
 	UInt		  uc_flags;
 	struct vki_ucontext  *uc_link;
 	vki_kstack_t	  uc_stack;
 	struct vki_sigcontext uc_mcontext;
 	vki_ksigset_t	  uc_sigmask;	/* mask last for extensibility */
 };


 /* sigaltstack controls */
 #define VKI_SS_ONSTACK      1
 #define VKI_SS_DISABLE      2

 #define VKI_MINSIGSTKSZ     2048
 #define VKI_SIGSTKSZ        8192


 #define VKI_SIG_BLOCK          0    /* for blocking signals */
 #define VKI_SIG_UNBLOCK        1    /* for unblocking signals */
 #define VKI_SIG_SETMASK        2    /* for setting the signal mask */

 #define VKI_SIG_DFL ((void*)0)     /* default signal handling */
 #define VKI_SIG_IGN ((void*)1)     /* ignore signal */
 #define VKI_SIG_ERR ((void*)-1)    /* error return from signal */

 #define VKI_SA_ONSTACK      0x08000000
 #define VKI_SA_RESTART      0x10000000
 #define VKI_SA_NOCLDSTOP    0x00000001
 #define VKI_SA_SIGINFO      0x00000004
 #define VKI_SA_RESETHAND    0x80000000
 #define VKI_SA_ONESHOT      VKI_SA_RESETHAND
 #define VKI_SA_NODEFER      0x40000000
 #define VKI_SA_NOMASK       VKI_SA_NODEFER
 #define VKI_SA_NOCLDWAIT    0x00000002
 #if 0
 #define VKI_SA_INTERRUPT    0x20000000 /* dummy -- ignored */
 #define VKI_SA_RESTORER     0x04000000
 #endif

 /* extra wait flags */
 #define	VKI_WNOHANG	1		/* Don't block waiting.  */
 #define	VKI_WUNTRACED	2		/* Report status of stopped children.  */
 #define VKI__WALL	0x40000000	/* Wait for any child.  */
 #define VKI__WCLONE	0x80000000	/* Wait for cloned process.  */

 #define	VKI_SIGHUP	1	/* Hangup (POSIX).  */
 #define	VKI_SIGINT	2	/* Interrupt (ANSI).  */
 #define	VKI_SIGQUIT	3	/* Quit (POSIX).  */
 #define	VKI_SIGILL	4	/* Illegal instruction (ANSI).  */
 #define	VKI_SIGTRAP	5	/* Trace trap (POSIX).  */
 #define	VKI_SIGABRT	6	/* Abort (ANSI).  */
 #define	VKI_SIGIOT	6	/* IOT trap (4.2 BSD).  */
 #define	VKI_SIGBUS	7	/* BUS error (4.2 BSD).  */
 #define	VKI_SIGFPE	8	/* Floating-point exception (ANSI).  */
 #define	VKI_SIGKILL	9	/* Kill, unblockable (POSIX).  */
 #define	VKI_SIGUSR1	10	/* User-defined signal 1 (POSIX).  */
 #define	VKI_SIGSEGV	11	/* Segmentation violation (ANSI).  */
 #define	VKI_SIGUSR2	12	/* User-defined signal 2 (POSIX).  */
 #define	VKI_SIGPIPE	13	/* Broken pipe (POSIX).  */
 #define	VKI_SIGALRM	14	/* Alarm clock (POSIX).  */
 #define	VKI_SIGTERM	15	/* Termination (ANSI).  */
 #define	VKI_SIGSTKFLT	16	/* Stack fault.  */
 #define	VKI_SIGCLD	SIGCHLD	/* Same as SIGCHLD (System V).  */
 #define	VKI_SIGCHLD	17	/* Child status has changed (POSIX).  */
 #define	VKI_SIGCONT	18	/* Continue (POSIX).  */
 #define	VKI_SIGSTOP	19	/* Stop, unblockable (POSIX).  */
 #define	VKI_SIGTSTP	20	/* Keyboard stop (POSIX).  */
 #define	VKI_SIGTTIN	21	/* Background read from tty (POSIX).  */
 #define	VKI_SIGTTOU	22	/* Background write to tty (POSIX).  */
 #define	VKI_SIGURG	23	/* Urgent condition on socket (4.2 BSD).  */
 #define	VKI_SIGXCPU	24	/* CPU limit exceeded (4.2 BSD).  */
 #define	VKI_SIGXFSZ	25	/* File size limit exceeded (4.2 BSD).  */
 #define	VKI_SIGVTALRM	26	/* Virtual alarm clock (4.2 BSD).  */
 #define	VKI_SIGPROF	27	/* Profiling alarm clock (4.2 BSD).  */
 #define	VKI_SIGWINCH	28	/* Window size change (4.3 BSD, Sun).  */
 #define	VKI_SIGPOLL	SIGIO	/* Pollable event occurred (System V).  */
 #define	VKI_SIGIO	29	/* I/O now possible (4.2 BSD).  */
 #define	VKI_SIGPWR	30	/* Power failure restart (System V).  */
 #define	VKI_SIGSYS	31	/* Bad system call.  */
 #define	VKI_SIGUNUSED	31

 #define VKI_SIGRTMIN	    32
 #define VKI_SIGRTMAX	    63

 #define VKI_SIGVGINT	    (VKI_SIGRTMIN+0) /* signal for internal use - interrupt */
 #define VKI_SIGVGKILL	    (VKI_SIGRTMIN+1) /* signal for internal use - kill */
 #define VKI_SIGRTUSERMIN    (VKI_SIGRTMIN+2) /* first user-usable RT signal */

 /* The following are copied from include/asm-i386/mman.h .*/

 #define VKI_PROT_NONE      0x0		   /* No page permissions */
 #define VKI_PROT_READ      0x1             /* Page can be read.  */
 #define VKI_PROT_WRITE     0x2             /* Page can be written.  */
 #define VKI_PROT_EXEC      0x4             /* Page can be executed.  */
 #define VKI_MAP_ANONYMOUS  0x20            /* Don't use a file.  */
 #define VKI_MAP_SHARED	   0x01		   /* Share changes.  */
 #define VKI_MAP_PRIVATE    0x02            /* Changes are private.  */
 #define VKI_MAP_FIXED      0x10            /* Interpret addr exactly */
 #define VKI_MAP_NOSYMS     0x40000000	   /* internal pseudo-flag to disable symbol loading */
 #define VKI_MAP_CLIENT     0x80000000	   /* internal pseudo-flag to distinguish client mappings */

 /* linux/mman.h */
 #define VKI_MREMAP_MAYMOVE	1
 #define VKI_MREMAP_FIXED	2

 /* Copied from linux-2.4.19/include/asm-i386/fcntl.h */

 #define VKI_O_ACCMODE	       0003
 #define VKI_O_RDONLY             00
 #define VKI_O_WRONLY             01
 #define VKI_O_RDWR               02
 #define VKI_O_CREAT            0100 /* not fcntl */
 #define VKI_O_EXCL             0200 /* not fcntl */
 #define VKI_O_TRUNC           01000 /* not fcntl */
 #define VKI_O_APPEND          02000
 #define VKI_O_NONBLOCK        04000
 #define VKI_O_SYNC           010000
 #define VKI_FASYNC           020000 /* fcntl, for BSD compatibility */
 #define VKI_O_DIRECT         040000 /* direct disk access hint */
 #define VKI_O_LARGEFILE     0100000
 #define VKI_O_DIRECTORY     0200000 /* must be a directory */
 #define VKI_O_NOFOLLOW      0400000 /* don't follow links */

 #define VKI_SEEK_SET              0
 #define VKI_SEEK_CUR              1
 #define VKI_SEEK_END              2

 /* Copied from linux-2.4.19/include/linux/stat.h */

 #define VKI_S_IRWXU 00700
 #define VKI_S_IRUSR 00400
 #define VKI_S_IWUSR 00200
 #define VKI_S_IXUSR 00100

 #define VKI_S_IRWXG 00070
 #define VKI_S_IRGRP 00040
 #define VKI_S_IWGRP 00020
 #define VKI_S_IXGRP 00010

 #define VKI_S_IRWXO 00007
 #define VKI_S_IROTH 00004
 #define VKI_S_IWOTH 00002
 #define VKI_S_IXOTH 00001


 /* Copied from /usr/src/linux-2.4.9-13/include/asm/errno.h */

 #define VKI_EPERM            1      /* Operation not permitted */
 #define VKI_ENOENT	     2	    /* No such file or directory */
 #define VKI_ESRCH            3      /* No such process */
 #define VKI_EINTR            4      /* Interrupted system call */
 #define VKI_EBADF            9      /* Bad file number */
 #define VKI_ENOMEM          12      /* Out of memory */
 #define VKI_EWOULDBLOCK     VKI_EAGAIN  /* Operation would block */
 #define VKI_EAGAIN          11      /* Try again */
 #define	VKI_EACCES	    13      /* Permission denied */
 #define	VKI_EFAULT          14      /* Bad address */
 #define VKI_EEXIST	    17	    /* File exists */
 #define VKI_EINVAL          22      /* Invalid argument */
 #define VKI_EMFILE	    24	    /* Too many open files */
 #define VKI_ENOSYS          38      /* Function not implemented */

 #define VKI_ERESTARTSYS	    512	    /* Restart the syscall */

 /* Copied from linux/isdn.h */

 #define VKI_IIOCGETCPS  _IO( 'I',21 )
 #define VKI_IIOCNETGPN  _IO( 'I',34 )

 #define ISDN_MSNLEN          32

 typedef struct {
     char name[ 10 ];
     char phone[ ISDN_MSNLEN ];
     int  outgoing;
 } isdn_net_ioctl_phone;


 /* Gawd ... hack ... */

 typedef struct vki__user_cap_header_struct {
         UInt version;
         int pid;
 } vki_cap_user_header_t;

 typedef struct vki__user_cap_data_struct {
         UInt effective;
         UInt permitted;
         UInt inheritable;
 } vki_cap_user_data_t;


 /* "Byrial Jensen" <byrial@image.dk> says:
                [various] ioctls take a pointer to a "struct
                termios" but this is another and shorter "struct
                termios" than the one defined in <termios.h> and used
                by tcgetattr(3) and tcsetattr(3) and other library
                functions. GNU libc translate between its library
                termios and the kernel termios.
 */

 #define VKI_SIZEOF_STRUCT_TERMIOS 36

 /* Adam Gundy <arg@cyberscience.com>, 20 Mar 2002, says: */
 #define VKI_SIZEOF_STRUCT_TERMIO 17


 /* File descriptor sets, for doing select().  Copied from
    /usr/src/linux-2.4.9-31/include/linux/posix_types.h
 */
 /*
  * This allows for 1024 file descriptors: if NR_OPEN is ever grown
  * beyond that you'll have to change this too. But 1024 fd's seem to be
  * enough even for such "real" unices like OSF/1, so hopefully this is
  * one limit that doesn't have to be changed [again].
  *
  * Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
  * <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
  * place for them. Solved by having dummy defines in <sys/time.h>.
  */

 /*
  * Those macros may have been defined in <gnu/types.h>. But we always
  * use the ones here.
  */
 #undef VKI_NFDBITS
 #define VKI_NFDBITS       (8 * sizeof(unsigned long))

 #undef VKI_FD_SETSIZE
 #define VKI_FD_SETSIZE    1024

 #undef VKI_FDSET_LONGS
 #define VKI_FDSET_LONGS   (VKI_FD_SETSIZE/VKI_NFDBITS)

 #undef VKI_FDELT
 #define VKI_FDELT(d)      ((d) / VKI_NFDBITS)

 #undef VKI_FDMASK
 #define VKI_FDMASK(d)     (1UL << ((d) % VKI_NFDBITS))

 typedef struct {
         unsigned long vki_fds_bits [VKI_FDSET_LONGS];
 } vki_fd_set;


 /* Gawd ...
    Copied from /usr/src/linux-2.4.9-31/./include/asm-i386/posix_types.h
 */
 #undef  VKI_FD_SET
 #define VKI_FD_SET(fd,fdsetp) \
                 __asm__ __volatile__("btsl %1,%0": \
                         "=m" (*(vki_fd_set *) (fdsetp)):"r" ((int) (fd)))

 #undef  VKI_FD_CLR
 #define VKI_FD_CLR(fd,fdsetp) \
                 __asm__ __volatile__("btrl %1,%0": \
                         "=m" (*(vki_fd_set *) (fdsetp)):"r" ((int) (fd)))

 #undef  VKI_FD_ISSET
 #define VKI_FD_ISSET(fd,fdsetp) (__extension__ ({ \
                 unsigned char __result; \
                 __asm__ __volatile__("btl %1,%2 ; setb %0" \
                         :"=q" (__result) :"r" ((int) (fd)), \
                         "m" (*(vki_fd_set *) (fdsetp))); \
                 __result; }))

 #undef  VKI_FD_ZERO
 #define VKI_FD_ZERO(fdsetp) \
 do { \
         int __d0, __d1; \
         __asm__ __volatile__("cld ; rep ; stosl" \
                         :"=m" (*(vki_fd_set *) (fdsetp)), \
                           "=&c" (__d0), "=&D" (__d1) \
                         :"a" (0), "1" (VKI_FDSET_LONGS), \
                         "2" ((vki_fd_set *) (fdsetp)) : "memory"); \
 } while (0)


 struct vki_pollfd {
    Int		fd;
    Short	events;
    Short	revents;
 };

 /* asm/poll.h */
 #define VKI_POLLIN          0x0001
 #define VKI_POLLPRI         0x0002
 #define VKI_POLLOUT         0x0004
 #define VKI_POLLERR         0x0008
 #define VKI_POLLHUP         0x0010
 #define VKI_POLLNVAL        0x0020


 /*
 ./include/asm-i386/posix_types.h:typedef long           __kernel_suseconds_t;
 ./include/linux/types.h:typedef __kernel_suseconds_t    suseconds_t;

 ./include/asm-i386/posix_types.h:typedef long           __kernel_time_t;
 ./include/linux/types.h:typedef __kernel_time_t         time_t;
 */

 struct vki_timeval {
         /* time_t */ long         tv_sec;         /* seconds */
         /* suseconds_t */ long    tv_usec;        /* microseconds */
 };


 /* For fcntl on fds ..
    from ./include/asm-i386/fcntl.h */
 #define VKI_F_DUPFD	    0	    /* dup */
 #define VKI_F_GETFD	    1	    /* get close_on_exec */
 #define VKI_F_SETFD	    2	    /* set/clear close_on_exec */
 #define VKI_F_GETFL         3       /* get file->f_flags */
 #define VKI_F_SETFL         4       /* set file->f_flags */

 /* for F_[GET|SET]FL */
 #define VKI_FD_CLOEXEC	    1	    /* actually anything with low bit set goes */

 #define VKI_O_NONBLOCK        04000

 /* For nanosleep ...
    from ./include/linux/time.h */
 struct vki_timespec {
         /* time_t */ long tv_sec;         /* seconds */
         long    tv_nsec;        /* nanoseconds */
 };


 /* STAT stuff
    from /usr/src/linux-2.4.9-31/include/asm-i386/stat.h */
 struct vki_stat {
         unsigned short st_dev;
         unsigned short __pad1;
         unsigned long st_ino;
         unsigned short st_mode;
         unsigned short st_nlink;
         unsigned short st_uid;
         unsigned short st_gid;
         unsigned short st_rdev;
         unsigned short __pad2;
         unsigned long  st_size;
         unsigned long  st_blksize;
         unsigned long  st_blocks;
         unsigned long  st_atime;
         unsigned long  __unused1;
         unsigned long  st_mtime;
         unsigned long  __unused2;
         unsigned long  st_ctime;
         unsigned long  __unused3;
         unsigned long  __unused4;
         unsigned long  __unused5;
 };


 /* To do with the ELF frame constructed by the kernel on a process'
    stack just before it transfers control to the program's interpreter
    (to use the ELF parlance).
    Constants from /usr/src/linux-2.4.9-31/include/linux/elf.h
    Logic from     /usr/src/linux-2.4.9-31/fs/binfmt_elf.c
                   and its counterpart in the 2.2.14 kernel sources
                   in Red Hat 6.2.  */
 #define VKI_AT_NULL   0
 #define VKI_AT_SYSINFO 32   /* address of system info page */
 #define VKI_AT_CLKTCK 17    /* frequency at which times() increments */
 #define VKI_AT_HWCAP  16    /* arch dependent hints at CPU capabilities */
 #define VKI_AT_BASE   7     /* base address of interpreter */
 #define VKI_AT_PAGESZ 6     /* system page size */
 #define VKI_AT_PHNUM  5     /* number of program headers */
 #define VKI_AT_PHENT  4     /* size of program header entry */
 #define VKI_AT_PHDR   3     /* program headers for program */
 #define VKI_AT_USER_AUX_SEGMENT 23  /* tell glibc what address segment
                                        0x3B points to.  (Needed for
                                        Red Hat Limbo, 7.3.92) */

 /* Including <linux/module.h> leads to loads of hassle because then we
    need <asm/atomic.h> sometimes (RedHat 7.3) and that is a
    kernel-only header which deliberately #errors on gcc-3.1.  Mucho
    hassle considering that we only want to know sizeof(struct module).
    Hence ...

    #include <stdio.h>
    #include <asm/atomic.h>
    #include <linux/module.h>

    int main ( void )
    {
       printf ("sizeof(struct module) = %d\n", sizeof(struct module) );
       return 0;
     }
 */

 #define VKI_SIZEOF_STRUCT_MODULE 96


 /* This is the structure passed to the modify_ldt syscall.  Just so as
    to confuse and annoy everyone, this is _not_ the same as an
    VgLdtEntry and has to be translated into such.  The logic for doing
    so, in vg_ldt.c, is copied from the kernel sources. */
 /*
  * ldt.h
  *
  * Definitions of structures used with the modify_ldt system call.
  */
 typedef struct vki_modify_ldt_ldt_s {
         unsigned int  entry_number;
         unsigned long base_addr;
         unsigned int  limit;
         unsigned int  seg_32bit:1;
         unsigned int  contents:2;
         unsigned int  read_exec_only:1;
         unsigned int  limit_in_pages:1;
         unsigned int  seg_not_present:1;
         unsigned int  useable:1;
 } vki_modify_ldt_t;

 #define VKI_MODIFY_LDT_CONTENTS_DATA        0
 #define VKI_MODIFY_LDT_CONTENTS_STACK       1
 #define VKI_MODIFY_LDT_CONTENTS_CODE        2


 /* Flags for clone() */
 /* linux/sched.h */
 #define VKI_CSIGNAL		0x000000ff	/* signal mask to be sent at exit */
 #define VKI_CLONE_VM		0x00000100	/* set if VM shared between processes */
 #define VKI_CLONE_FS		0x00000200	/* set if fs info shared between processes */
 #define VKI_CLONE_FILES		0x00000400	/* set if open files shared between processes */
 #define VKI_CLONE_SIGHAND	0x00000800	/* set if signal handlers and blocked signals shared */
 #define VKI_CLONE_IDLETASK	0x00001000	/* set if new pid should be 0 (kernel only)*/
 #define VKI_CLONE_PTRACE	0x00002000	/* set if we want to let tracing continue on the child too */
 #define VKI_CLONE_VFORK		0x00004000	/* set if the parent wants the child to wake it up on mm_release */
 #define VKI_CLONE_PARENT	0x00008000	/* set if we want to have the same parent as the cloner */
 #define VKI_CLONE_THREAD	0x00010000	/* Same thread group? */
 #define VKI_CLONE_NEWNS		0x00020000	/* New namespace group? */
 #define VKI_CLONE_SYSVSEM	0x00040000	/* share system V SEM_UNDO semantics */
 #define VKI_CLONE_SETTLS	0x00080000	/* create a new TLS for the child */
 #define VKI_CLONE_PARENT_SETTID	0x00100000	/* set the TID in the parent */
 #define VKI_CLONE_CHILD_CLEARTID	0x00200000	/* clear the TID in the child */
 #define VKI_CLONE_DETACHED	0x00400000	/* parent wants no child-exit signal */
 #define VKI_CLONE_UNTRACED	0x00800000	/* set if the tracing process can't force VKI_CLONE_PTRACE on this clone */
 #define VKI_CLONE_CHILD_SETTID	0x01000000	/* set the TID in the child */

 /* This is the structure passed to the getdents syscall. */
 /*
  * linux/dirent.h
  */
 typedef struct vki_dirent {
 	long           d_ino;
 	long           d_off;
 	unsigned short d_reclen;
 	char           d_name[256];
 } vki_dirent;


 /* This is the structure passed to the getrlimit syscall. */
 /*
  * bits/resource.h
  */
 typedef struct vki_rlimit {
 	unsigned long rlim_cur;
 	unsigned long rlim_max;
 } vki_rlimit;

 #define VKI_RLIMIT_NOFILE 7

 /* Socket stuff. */
 /*
  * sys/socket.h
  */
 typedef unsigned short vki_sa_family_t;
 struct vki_sockaddr {
   vki_sa_family_t sa_family;     /* Address family. */
   char            sa_data[14];   /* Address data. */
 };

 /* statfs structs */
 /*
  * bits/statfs.h
  */

 struct statfs {
         unsigned int f_type;
         unsigned int f_bsize;
         unsigned int f_blocks;
         unsigned int f_bfree;
         unsigned int f_bavail;
         unsigned int f_files;
         unsigned int f_ffree;
         int f_fsid[ 2 ];
         unsigned int f_namelen;
         unsigned int f_frsize;
         unsigned int f_spare[5];
 };

 struct statfs64 {
         unsigned int f_type;
         unsigned int f_bsize;
         unsigned long long f_blocks;
         unsigned long long f_bfree;
         unsigned long long f_bavail;
         unsigned long long f_files;
         unsigned long long f_ffree;
         int f_fsid[ 2 ];
         unsigned int f_namelen;
         unsigned int f_frsize;
         unsigned int f_spare[5];
 };


 #endif /*  __VG_KERNELIFACE_H */

 /*--------------------------------------------------------------------*/
 /*--- end                                         vg_kerneliface.h ---*/
 /*--------------------------------------------------------------------*/

	/--------------------------------------------------------------------/
	/--- A header file defining structures and constants which are ---/
	/--- important at the kernel boundary for this platform. ---/
	/--- vg_kerneliface.h ---/
	/--------------------------------------------------------------------/

	/*
	This file is part of Valgrind, an extensible x86 protected-mode
	emulator for monitoring program execution on x86-Unixes.

	Copyright (C) 2000-2004 Julian Seward
	jseward@acm.org

	This program is free software; you can redistribute it and/or
	modify it under the terms of the GNU General Public License as
	published by the Free Software Foundation; either version 2 of the
	License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	02111-1307, USA.

	The GNU General Public License is contained in the file COPYING.
	*/

	#ifndef __VG_KERNELIFACE_H
	#define __VG_KERNELIFACE_H

	/* This file is ONLY to be included into vg_include.h. Do not include
	it directly into valgrind source .c files. This file defines types
	and constants for the kernel interface, and to make that clear
	everything is prefixed VKI. */

	/*--- All the following stuff is correct for Linux kernels 2.2.X and
	2.4.X.
	---*/

	/* Should really get this from an include file somewhere. */
	#define VKI_BYTES_PER_PAGE_BITS 12
	#define VKI_BYTES_PER_PAGE (1 << VKI_BYTES_PER_PAGE_BITS)

	#define VKI_BYTES_PER_WORD 4
	#define VKI_WORDS_PER_PAGE (VKI_BYTES_PER_PAGE / VKI_BYTES_PER_WORD)


	/* An implementation of signal sets. These are the same as the sigset
	implementations in the relevant Linux kernels. Note carefully that
	this has nothing to do with glibc's signal sets. We work entirely
	at the kernel boundary, so the libc stuff is invisible and
	irrelevant. */

	/* The following is copied from
	/usr/src/linux-2.4.9-13/include/asm-i386/signal.h */
	#define VKI_KNSIG 64 /* true for linux 2.2.X and 2.4.X */
	#define VKI_KNSIG_BPW 32 /* since we're using UInts */
	#define VKI_KNSIG_WORDS (VKI_KNSIG / VKI_KNSIG_BPW)

	typedef
	struct {
	UInt ws[VKI_KNSIG_WORDS];
	}
	vki_ksigset_t;


	typedef
	struct {
	void* ksa_handler;
	unsigned long ksa_flags;
	void (*ksa_restorer)(void);
	vki_ksigset_t ksa_mask;
	}
	vki_ksigaction;

	typedef
	struct {
	void* ss_sp;
	Int ss_flags;
	UInt ss_size;
	}
	vki_kstack_t;

	#define SI_MAX_SIZE 128
	#define SI_PAD_SIZE ((SI_MAX_SIZE/sizeof(int)) - 3)

	union vki_sigval {
	Int sival_int;
	void *sival_ptr;
	};

	typedef
	struct {
	Int si_signo;
	Int si_errno;
	Int si_code;

	union {
	Int _pad[SI_PAD_SIZE];

	/* kill() */
	struct {
	Int _pid; /* sender's pid */
	Short _uid; /* sender's uid */
	} _kill;

	/* POSIX.1b timers */
	struct {
	UInt _timer1;
	UInt _timer2;
	} _timer;

	/* POSIX.1b signals */
	struct {
	Int _pid; /* sender's pid */
	UShort _uid; /* sender's uid */
	union vki_sigval _sigval;
	} _rt;

	/* SIGCHLD */
	struct {
	Int _pid; /* which child */
	UShort _uid; /* sender's uid */
	Int _status; /* exit code */
	Int _utime;
	Int _stime;
	} _sigchld;

	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
	struct {
	void _addr; / faulting insn/memory ref. */
	} _sigfault;

	/* SIGPOLL */
	struct {
	Int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
	Int _fd;
	} _sigpoll;
	} _sifields;
	} vki_ksiginfo_t;

	/* linux-2.6/include/asm-generic/siginfo.h */

	#define VKI_SI_USER 0
	#define VKI_SI_QUEUE -1
	#define VKI_SI_TKILL -6

	struct vki_fpreg {
	UShort significand[4];
	UShort exponent;
	};

	struct vki_fpxreg {
	UShort significand[4];
	UShort exponent;
	UShort padding[3];
	};

	struct vki_xmmreg {
	UInt element[4];
	};

	struct vki_fpstate {
	/* Regular FPU environment */
	unsigned long cw;
	unsigned long sw;
	unsigned long tag;
	unsigned long ipoff;
	unsigned long cssel;
	unsigned long dataoff;
	unsigned long datasel;
	struct vki_fpreg _st[8];
	unsigned short status;
	unsigned short magic; /* 0xffff = regular FPU data only */

	/* FXSR FPU environment */
	unsigned long _fxsr_env[6]; /* FXSR FPU env is ignored */
	unsigned long mxcsr;
	unsigned long reserved;
	struct vki_fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */
	struct vki_xmmreg _xmm[8];
	unsigned long padding[56];
	};

	#define X86_FXSR_MAGIC 0x0000

	struct vki_sigcontext {
	UShort gs, __gsh;
	UShort fs, __fsh;
	UShort es, __esh;
	UShort ds, __dsh;
	UInt edi;
	UInt esi;
	UInt ebp;
	UInt esp;
	UInt ebx;
	UInt edx;
	UInt ecx;
	UInt eax;
	UInt trapno;
	UInt err;
	UInt eip;
	UShort cs, __csh;
	UInt eflags;
	UInt esp_at_signal;
	UShort ss, __ssh;
	struct vki_fpstate * fpstate;
	UInt oldmask;
	UInt cr2;
	};

	struct vki_ucontext {
	UInt uc_flags;
	struct vki_ucontext *uc_link;
	vki_kstack_t uc_stack;
	struct vki_sigcontext uc_mcontext;
	vki_ksigset_t uc_sigmask; /* mask last for extensibility */
	};


	/* sigaltstack controls */
	#define VKI_SS_ONSTACK 1
	#define VKI_SS_DISABLE 2

	#define VKI_MINSIGSTKSZ 2048
	#define VKI_SIGSTKSZ 8192



	#define VKI_SIG_BLOCK 0 /* for blocking signals */
	#define VKI_SIG_UNBLOCK 1 /* for unblocking signals */
	#define VKI_SIG_SETMASK 2 /* for setting the signal mask */

	#define VKI_SIG_DFL ((void)0) / default signal handling */
	#define VKI_SIG_IGN ((void)1) / ignore signal */
	#define VKI_SIG_ERR ((void)-1) / error return from signal */

	#define VKI_SA_ONSTACK 0x08000000
	#define VKI_SA_RESTART 0x10000000
	#define VKI_SA_NOCLDSTOP 0x00000001
	#define VKI_SA_SIGINFO 0x00000004
	#define VKI_SA_RESETHAND 0x80000000
	#define VKI_SA_ONESHOT VKI_SA_RESETHAND
	#define VKI_SA_NODEFER 0x40000000
	#define VKI_SA_NOMASK VKI_SA_NODEFER
	#define VKI_SA_NOCLDWAIT 0x00000002
	#if 0
	#define VKI_SA_INTERRUPT 0x20000000 /* dummy -- ignored */
	#define VKI_SA_RESTORER 0x04000000
	#endif

	/* extra wait flags */
	#define VKI_WNOHANG 1 /* Don't block waiting. */
	#define VKI_WUNTRACED 2 /* Report status of stopped children. */
	#define VKI__WALL 0x40000000 /* Wait for any child. */
	#define VKI__WCLONE 0x80000000 /* Wait for cloned process. */

	#define VKI_SIGHUP 1 /* Hangup (POSIX). */
	#define VKI_SIGINT 2 /* Interrupt (ANSI). */
	#define VKI_SIGQUIT 3 /* Quit (POSIX). */
	#define VKI_SIGILL 4 /* Illegal instruction (ANSI). */
	#define VKI_SIGTRAP 5 /* Trace trap (POSIX). */
	#define VKI_SIGABRT 6 /* Abort (ANSI). */
	#define VKI_SIGIOT 6 /* IOT trap (4.2 BSD). */
	#define VKI_SIGBUS 7 /* BUS error (4.2 BSD). */
	#define VKI_SIGFPE 8 /* Floating-point exception (ANSI). */
	#define VKI_SIGKILL 9 /* Kill, unblockable (POSIX). */
	#define VKI_SIGUSR1 10 /* User-defined signal 1 (POSIX). */
	#define VKI_SIGSEGV 11 /* Segmentation violation (ANSI). */
	#define VKI_SIGUSR2 12 /* User-defined signal 2 (POSIX). */
	#define VKI_SIGPIPE 13 /* Broken pipe (POSIX). */
	#define VKI_SIGALRM 14 /* Alarm clock (POSIX). */
	#define VKI_SIGTERM 15 /* Termination (ANSI). */
	#define VKI_SIGSTKFLT 16 /* Stack fault. */
	#define VKI_SIGCLD SIGCHLD /* Same as SIGCHLD (System V). */
	#define VKI_SIGCHLD 17 /* Child status has changed (POSIX). */
	#define VKI_SIGCONT 18 /* Continue (POSIX). */
	#define VKI_SIGSTOP 19 /* Stop, unblockable (POSIX). */
	#define VKI_SIGTSTP 20 /* Keyboard stop (POSIX). */
	#define VKI_SIGTTIN 21 /* Background read from tty (POSIX). */
	#define VKI_SIGTTOU 22 /* Background write to tty (POSIX). */
	#define VKI_SIGURG 23 /* Urgent condition on socket (4.2 BSD). */
	#define VKI_SIGXCPU 24 /* CPU limit exceeded (4.2 BSD). */
	#define VKI_SIGXFSZ 25 /* File size limit exceeded (4.2 BSD). */
	#define VKI_SIGVTALRM 26 /* Virtual alarm clock (4.2 BSD). */
	#define VKI_SIGPROF 27 /* Profiling alarm clock (4.2 BSD). */
	#define VKI_SIGWINCH 28 /* Window size change (4.3 BSD, Sun). */
	#define VKI_SIGPOLL SIGIO /* Pollable event occurred (System V). */
	#define VKI_SIGIO 29 /* I/O now possible (4.2 BSD). */
	#define VKI_SIGPWR 30 /* Power failure restart (System V). */
	#define VKI_SIGSYS 31 /* Bad system call. */
	#define VKI_SIGUNUSED 31

	#define VKI_SIGRTMIN 32
	#define VKI_SIGRTMAX 63

	#define VKI_SIGVGINT (VKI_SIGRTMIN+0) /* signal for internal use - interrupt */
	#define VKI_SIGVGKILL (VKI_SIGRTMIN+1) /* signal for internal use - kill */
	#define VKI_SIGRTUSERMIN (VKI_SIGRTMIN+2) /* first user-usable RT signal */

	/* The following are copied from include/asm-i386/mman.h .*/

	#define VKI_PROT_NONE 0x0 /* No page permissions */
	#define VKI_PROT_READ 0x1 /* Page can be read. */
	#define VKI_PROT_WRITE 0x2 /* Page can be written. */
	#define VKI_PROT_EXEC 0x4 /* Page can be executed. */
	#define VKI_MAP_ANONYMOUS 0x20 /* Don't use a file. */
	#define VKI_MAP_SHARED 0x01 /* Share changes. */
	#define VKI_MAP_PRIVATE 0x02 /* Changes are private. */
	#define VKI_MAP_FIXED 0x10 /* Interpret addr exactly */
	#define VKI_MAP_NOSYMS 0x40000000 /* internal pseudo-flag to disable symbol loading */
	#define VKI_MAP_CLIENT 0x80000000 /* internal pseudo-flag to distinguish client mappings */

	/* linux/mman.h */
	#define VKI_MREMAP_MAYMOVE 1
	#define VKI_MREMAP_FIXED 2

	/* Copied from linux-2.4.19/include/asm-i386/fcntl.h */

	#define VKI_O_ACCMODE 0003
	#define VKI_O_RDONLY 00
	#define VKI_O_WRONLY 01
	#define VKI_O_RDWR 02
	#define VKI_O_CREAT 0100 /* not fcntl */
	#define VKI_O_EXCL 0200 /* not fcntl */
	#define VKI_O_TRUNC 01000 /* not fcntl */
	#define VKI_O_APPEND 02000
	#define VKI_O_NONBLOCK 04000
	#define VKI_O_SYNC 010000
	#define VKI_FASYNC 020000 /* fcntl, for BSD compatibility */
	#define VKI_O_DIRECT 040000 /* direct disk access hint */
	#define VKI_O_LARGEFILE 0100000
	#define VKI_O_DIRECTORY 0200000 /* must be a directory */
	#define VKI_O_NOFOLLOW 0400000 /* don't follow links */

	#define VKI_SEEK_SET 0
	#define VKI_SEEK_CUR 1
	#define VKI_SEEK_END 2

	/* Copied from linux-2.4.19/include/linux/stat.h */

	#define VKI_S_IRWXU 00700
	#define VKI_S_IRUSR 00400
	#define VKI_S_IWUSR 00200
	#define VKI_S_IXUSR 00100

	#define VKI_S_IRWXG 00070
	#define VKI_S_IRGRP 00040
	#define VKI_S_IWGRP 00020
	#define VKI_S_IXGRP 00010

	#define VKI_S_IRWXO 00007
	#define VKI_S_IROTH 00004
	#define VKI_S_IWOTH 00002
	#define VKI_S_IXOTH 00001


	/* Copied from /usr/src/linux-2.4.9-13/include/asm/errno.h */

	#define VKI_EPERM 1 /* Operation not permitted */
	#define VKI_ENOENT 2 /* No such file or directory */
	#define VKI_ESRCH 3 /* No such process */
	#define VKI_EINTR 4 /* Interrupted system call */
	#define VKI_EBADF 9 /* Bad file number */
	#define VKI_ENOMEM 12 /* Out of memory */
	#define VKI_EWOULDBLOCK VKI_EAGAIN /* Operation would block */
	#define VKI_EAGAIN 11 /* Try again */
	#define VKI_EACCES 13 /* Permission denied */
	#define VKI_EFAULT 14 /* Bad address */
	#define VKI_EEXIST 17 /* File exists */
	#define VKI_EINVAL 22 /* Invalid argument */
	#define VKI_EMFILE 24 /* Too many open files */
	#define VKI_ENOSYS 38 /* Function not implemented */

	#define VKI_ERESTARTSYS 512 /* Restart the syscall */

	/* Copied from linux/isdn.h */

	#define VKI_IIOCGETCPS _IO( 'I',21 )
	#define VKI_IIOCNETGPN _IO( 'I',34 )

	#define ISDN_MSNLEN 32

	typedef struct {
	char name[ 10 ];
	char phone[ ISDN_MSNLEN ];
	int outgoing;
	} isdn_net_ioctl_phone;


	/* Gawd ... hack ... */

	typedef struct vki__user_cap_header_struct {
	UInt version;
	int pid;
	} vki_cap_user_header_t;

	typedef struct vki__user_cap_data_struct {
	UInt effective;
	UInt permitted;
	UInt inheritable;
	} vki_cap_user_data_t;


	/* "Byrial Jensen" <byrial@image.dk> says:
	[various] ioctls take a pointer to a "struct
	termios" but this is another and shorter "struct
	termios" than the one defined in <termios.h> and used
	by tcgetattr(3) and tcsetattr(3) and other library
	functions. GNU libc translate between its library
	termios and the kernel termios.
	*/

	#define VKI_SIZEOF_STRUCT_TERMIOS 36

	/* Adam Gundy <arg@cyberscience.com>, 20 Mar 2002, says: */
	#define VKI_SIZEOF_STRUCT_TERMIO 17


	/* File descriptor sets, for doing select(). Copied from
	/usr/src/linux-2.4.9-31/include/linux/posix_types.h
	*/
	/*
	* This allows for 1024 file descriptors: if NR_OPEN is ever grown
	* beyond that you'll have to change this too. But 1024 fd's seem to be
	* enough even for such "real" unices like OSF/1, so hopefully this is
	* one limit that doesn't have to be changed [again].
	*
	* Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
	* <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
	* place for them. Solved by having dummy defines in <sys/time.h>.
	*/

	/*
	* Those macros may have been defined in <gnu/types.h>. But we always
	* use the ones here.
	*/
	#undef VKI_NFDBITS
	#define VKI_NFDBITS (8 * sizeof(unsigned long))

	#undef VKI_FD_SETSIZE
	#define VKI_FD_SETSIZE 1024

	#undef VKI_FDSET_LONGS
	#define VKI_FDSET_LONGS (VKI_FD_SETSIZE/VKI_NFDBITS)

	#undef VKI_FDELT
	#define VKI_FDELT(d) ((d) / VKI_NFDBITS)

	#undef VKI_FDMASK
	#define VKI_FDMASK(d) (1UL << ((d) % VKI_NFDBITS))

	typedef struct {
	unsigned long vki_fds_bits [VKI_FDSET_LONGS];
	} vki_fd_set;


	/* Gawd ...
	Copied from /usr/src/linux-2.4.9-31/./include/asm-i386/posix_types.h
	*/
	#undef VKI_FD_SET
	#define VKI_FD_SET(fd,fdsetp) \
	__asm__ __volatile__("btsl %1,%0": \
	"=m" ((vki_fd_set ) (fdsetp)):"r" ((int) (fd)))

	#undef VKI_FD_CLR
	#define VKI_FD_CLR(fd,fdsetp) \
	__asm__ __volatile__("btrl %1,%0": \
	"=m" ((vki_fd_set ) (fdsetp)):"r" ((int) (fd)))

	#undef VKI_FD_ISSET
	#define VKI_FD_ISSET(fd,fdsetp) (__extension__ ({ \
	unsigned char __result; \
	__asm__ __volatile__("btl %1,%2 ; setb %0" \
	:"=q" (__result) :"r" ((int) (fd)), \
	"m" ((vki_fd_set ) (fdsetp))); \
	__result; }))

	#undef VKI_FD_ZERO
	#define VKI_FD_ZERO(fdsetp) \
	do { \
	int __d0, __d1; \
	__asm__ __volatile__("cld ; rep ; stosl" \
	:"=m" ((vki_fd_set ) (fdsetp)), \
	"=&c" (__d0), "=&D" (__d1) \
	:"a" (0), "1" (VKI_FDSET_LONGS), \
	"2" ((vki_fd_set *) (fdsetp)) : "memory"); \
	} while (0)



	struct vki_pollfd {
	Int fd;
	Short events;
	Short revents;
	};

	/* asm/poll.h */
	#define VKI_POLLIN 0x0001
	#define VKI_POLLPRI 0x0002
	#define VKI_POLLOUT 0x0004
	#define VKI_POLLERR 0x0008
	#define VKI_POLLHUP 0x0010
	#define VKI_POLLNVAL 0x0020



	/*
	./include/asm-i386/posix_types.h:typedef long __kernel_suseconds_t;
	./include/linux/types.h:typedef __kernel_suseconds_t suseconds_t;

	./include/asm-i386/posix_types.h:typedef long __kernel_time_t;
	./include/linux/types.h:typedef __kernel_time_t time_t;
	*/

	struct vki_timeval {
	/* time_t / long tv_sec; / seconds */
	/* suseconds_t / long tv_usec; / microseconds */
	};



	/* For fcntl on fds ..
	from ./include/asm-i386/fcntl.h */
	#define VKI_F_DUPFD 0 /* dup */
	#define VKI_F_GETFD 1 /* get close_on_exec */
	#define VKI_F_SETFD 2 /* set/clear close_on_exec */
	#define VKI_F_GETFL 3 /* get file->f_flags */
	#define VKI_F_SETFL 4 /* set file->f_flags */

	/* for F_[GET\|SET]FL */
	#define VKI_FD_CLOEXEC 1 /* actually anything with low bit set goes */

	#define VKI_O_NONBLOCK 04000

	/* For nanosleep ...
	from ./include/linux/time.h */
	struct vki_timespec {
	/* time_t / long tv_sec; / seconds */
	long tv_nsec; /* nanoseconds */
	};


	/* STAT stuff
	from /usr/src/linux-2.4.9-31/include/asm-i386/stat.h */
	struct vki_stat {
	unsigned short st_dev;
	unsigned short __pad1;
	unsigned long st_ino;
	unsigned short st_mode;
	unsigned short st_nlink;
	unsigned short st_uid;
	unsigned short st_gid;
	unsigned short st_rdev;
	unsigned short __pad2;
	unsigned long st_size;
	unsigned long st_blksize;
	unsigned long st_blocks;
	unsigned long st_atime;
	unsigned long __unused1;
	unsigned long st_mtime;
	unsigned long __unused2;
	unsigned long st_ctime;
	unsigned long __unused3;
	unsigned long __unused4;
	unsigned long __unused5;
	};


	/* To do with the ELF frame constructed by the kernel on a process'
	stack just before it transfers control to the program's interpreter
	(to use the ELF parlance).
	Constants from /usr/src/linux-2.4.9-31/include/linux/elf.h
	Logic from /usr/src/linux-2.4.9-31/fs/binfmt_elf.c
	and its counterpart in the 2.2.14 kernel sources
	in Red Hat 6.2. */
	#define VKI_AT_NULL 0
	#define VKI_AT_SYSINFO 32 /* address of system info page */
	#define VKI_AT_CLKTCK 17 /* frequency at which times() increments */
	#define VKI_AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
	#define VKI_AT_BASE 7 /* base address of interpreter */
	#define VKI_AT_PAGESZ 6 /* system page size */
	#define VKI_AT_PHNUM 5 /* number of program headers */
	#define VKI_AT_PHENT 4 /* size of program header entry */
	#define VKI_AT_PHDR 3 /* program headers for program */
	#define VKI_AT_USER_AUX_SEGMENT 23 /* tell glibc what address segment
	0x3B points to. (Needed for
	Red Hat Limbo, 7.3.92) */

	/* Including <linux/module.h> leads to loads of hassle because then we
	need <asm/atomic.h> sometimes (RedHat 7.3) and that is a
	kernel-only header which deliberately #errors on gcc-3.1. Mucho
	hassle considering that we only want to know sizeof(struct module).
	Hence ...

	#include <stdio.h>
	#include <asm/atomic.h>
	#include <linux/module.h>

	int main ( void )
	{
	printf ("sizeof(struct module) = %d\n", sizeof(struct module) );
	return 0;
	}
	*/

	#define VKI_SIZEOF_STRUCT_MODULE 96


	/* This is the structure passed to the modify_ldt syscall. Just so as
	to confuse and annoy everyone, this is _not_ the same as an
	VgLdtEntry and has to be translated into such. The logic for doing
	so, in vg_ldt.c, is copied from the kernel sources. */
	/*
	* ldt.h
	*
	* Definitions of structures used with the modify_ldt system call.
	*/
	typedef struct vki_modify_ldt_ldt_s {
	unsigned int entry_number;
	unsigned long base_addr;
	unsigned int limit;
	unsigned int seg_32bit:1;
	unsigned int contents:2;
	unsigned int read_exec_only:1;
	unsigned int limit_in_pages:1;
	unsigned int seg_not_present:1;
	unsigned int useable:1;
	} vki_modify_ldt_t;

	#define VKI_MODIFY_LDT_CONTENTS_DATA 0
	#define VKI_MODIFY_LDT_CONTENTS_STACK 1
	#define VKI_MODIFY_LDT_CONTENTS_CODE 2


	/* Flags for clone() */
	/* linux/sched.h */
	#define VKI_CSIGNAL 0x000000ff /* signal mask to be sent at exit */
	#define VKI_CLONE_VM 0x00000100 /* set if VM shared between processes */
	#define VKI_CLONE_FS 0x00000200 /* set if fs info shared between processes */
	#define VKI_CLONE_FILES 0x00000400 /* set if open files shared between processes */
	#define VKI_CLONE_SIGHAND 0x00000800 /* set if signal handlers and blocked signals shared */
	#define VKI_CLONE_IDLETASK 0x00001000 /* set if new pid should be 0 (kernel only)*/
	#define VKI_CLONE_PTRACE 0x00002000 /* set if we want to let tracing continue on the child too */
	#define VKI_CLONE_VFORK 0x00004000 /* set if the parent wants the child to wake it up on mm_release */
	#define VKI_CLONE_PARENT 0x00008000 /* set if we want to have the same parent as the cloner */
	#define VKI_CLONE_THREAD 0x00010000 /* Same thread group? */
	#define VKI_CLONE_NEWNS 0x00020000 /* New namespace group? */
	#define VKI_CLONE_SYSVSEM 0x00040000 /* share system V SEM_UNDO semantics */
	#define VKI_CLONE_SETTLS 0x00080000 /* create a new TLS for the child */
	#define VKI_CLONE_PARENT_SETTID 0x00100000 /* set the TID in the parent */
	#define VKI_CLONE_CHILD_CLEARTID 0x00200000 /* clear the TID in the child */
	#define VKI_CLONE_DETACHED 0x00400000 /* parent wants no child-exit signal */
	#define VKI_CLONE_UNTRACED 0x00800000 /* set if the tracing process can't force VKI_CLONE_PTRACE on this clone */
	#define VKI_CLONE_CHILD_SETTID 0x01000000 /* set the TID in the child */

	/* This is the structure passed to the getdents syscall. */
	/*
	* linux/dirent.h
	*/
	typedef struct vki_dirent {
	long d_ino;
	long d_off;
	unsigned short d_reclen;
	char d_name[256];
	} vki_dirent;



	/* This is the structure passed to the getrlimit syscall. */
	/*
	* bits/resource.h
	*/
	typedef struct vki_rlimit {
	unsigned long rlim_cur;
	unsigned long rlim_max;
	} vki_rlimit;

	#define VKI_RLIMIT_NOFILE 7

	/* Socket stuff. */
	/*
	* sys/socket.h
	*/
	typedef unsigned short vki_sa_family_t;
	struct vki_sockaddr {
	vki_sa_family_t sa_family; /* Address family. */
	char sa_data[14]; /* Address data. */
	};

	/* statfs structs */
	/*
	* bits/statfs.h
	*/

	struct statfs {
	unsigned int f_type;
	unsigned int f_bsize;
	unsigned int f_blocks;
	unsigned int f_bfree;
	unsigned int f_bavail;
	unsigned int f_files;
	unsigned int f_ffree;
	int f_fsid[ 2 ];
	unsigned int f_namelen;
	unsigned int f_frsize;
	unsigned int f_spare[5];
	};

	struct statfs64 {
	unsigned int f_type;
	unsigned int f_bsize;
	unsigned long long f_blocks;
	unsigned long long f_bfree;
	unsigned long long f_bavail;
	unsigned long long f_files;
	unsigned long long f_ffree;
	int f_fsid[ 2 ];
	unsigned int f_namelen;
	unsigned int f_frsize;
	unsigned int f_spare[5];
	};


	#endif /* __VG_KERNELIFACE_H */

	/--------------------------------------------------------------------/
	/--- end vg_kerneliface.h ---/
	/--------------------------------------------------------------------/