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 /*--------------------------------------------------------------------*/
 /*--- FreeBSD-specific kernel interface.             vki-freebsd.h ---*/
 /*--------------------------------------------------------------------*/
 
 /*
    This file is part of Valgrind, a dynamic binary instrumentation
    framework.
 
    Copyright (C) 2000-2005 Julian Seward
       jseward@acm.org
    Copyright (C) 2018-2021 Paul Floyd
       pjfloyd@wanadoo.fr
 
    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, see <http://www.gnu.org/licenses/>.
 
    The GNU General Public License is contained in the file COPYING.
 */
 
 /* This file defines types and constants for the kernel interface, and to
    make that clear everything is prefixed VKI_/vki_.
 
    All code is copied verbatim from kernel source files, except that:
    - VKI_/vki_ prefixes are added
    - some extra explanatory comments are included;  they are all within
      "[[ ]]"
    - for some types, we only care about the size;  for a few of them (big
      ones that are painful to fully drag in here), a VKI_SIZEOF_* constant
      is used.
 
    The files the code is taken from is indicated.
 */
 
 #ifndef VKI_FREEBSD_H
 #define VKI_FREEBSD_H
 
 //----------------------------------------------------------------------
 // Arch-specific POSIX types
 //----------------------------------------------------------------------
 
 #if defined(VGA_x86)
 #  include "vki-machine-types-x86-freebsd.h"
 #elif defined(VGA_amd64)
 #  include "vki-machine-types-amd64-freebsd.h"
 #elif defined(VGA_arm64)
 #  include "vki-machine-types-arm64-freebsd.h"
 #else
 #  error Unknown platform
 #endif
 
 #include <sys/fcntl.h> // O_RDONLY
 #include <sys/param.h> // MAXPATHLEN
 
 
 //----------------------------------------------------------------------
 // From sys/select.h
 //----------------------------------------------------------------------
 
 typedef unsigned long __vki_fd_mask;
 
 #undef __VKI_NFDBITS
 #define __VKI_NFDBITS   (8 * sizeof(__vki_fd_mask))
 
 #undef __VKI_FD_SETSIZE
 #define __VKI_FD_SETSIZE   1024U
 
 #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 fds_bits [__VKI_FDSET_LONGS];
 } __vki_fd_set;
 
 //----------------------------------------------------------------------
 // sys/_types.h
 //----------------------------------------------------------------------
 /* MD QQQ 32 on 64 */
 typedef  long     __vki_key_t;
 typedef  long     __vki_suseconds_t;
 typedef  struct __timer *__vki_timer_t;
 typedef  struct __mq *__vki_mqd_t;
 
 /* MI */
 typedef  vki_uint32_t   __vki_blksize_t;
 typedef  vki_int64_t __vki_blkcnt_t;
 typedef  vki_int32_t __vki_clockid_t;
 typedef  vki_int32_t __vki_ct_rune_t;
 typedef  vki_uint32_t   __vki_fflags_t;
 typedef  vki_uint64_t   __vki_fsblkcnt_t;
 typedef  vki_uint64_t   __vki_fsfilcnt_t;
 typedef  vki_uint32_t   __vki_gid_t;
 typedef  vki_int64_t __vki_id_t;
 typedef  vki_uint64_t   __vki_ino_t;
 typedef  vki_int32_t __vki_lwpid_t;
 typedef  vki_uint16_t   __vki_mode_t;
 typedef  vki_uint64_t   __vki_nlink_t;
 typedef  vki_int64_t __vki_off_t;
 typedef  vki_int32_t __vki_pid_t;
 typedef  vki_int64_t __vki_rlim_t;
 typedef  vki_uint8_t __vki_sa_family_t;
 typedef  vki_uint32_t   __vki_socklen_t;
 typedef  vki_uint32_t   __vki_uid_t;
 typedef  vki_int32_t __vki_useconds_t;
 typedef  __vki_ct_rune_t   __vki_rune_t;
 typedef  __vki_ct_rune_t   __vki_wchar_t;
 typedef  __vki_ct_rune_t   __vki_wint_t;
 typedef  vki_uint64_t   __vki_dev_t;
 typedef  vki_uint32_t   __vki_fixpt_t;
 
 
 //----------------------------------------------------------------------
 // From sys/types.h
 //----------------------------------------------------------------------
 
 typedef unsigned char   vki_u_char;
 typedef unsigned short  vki_u_short;
 typedef unsigned int    vki_u_int;
 typedef unsigned long   vki_u_long;
 
 typedef  vki_uint8_t    vki_u_int8_t;
 typedef  vki_uint16_t      vki_u_int16_t;
 typedef  vki_uint32_t      vki_u_int32_t;
 typedef  vki_uint64_t      vki_u_int64_t;
 
 typedef  vki_uint64_t      vki_u_quad_t;
 typedef  vki_int64_t    vki_quad_t;
 typedef  __vki_caddr_t     vki_caddr_t;
 typedef __const __vki_caddr_t vki_c_caddr_t;
 typedef __volatile __vki_caddr_t vki_v_caddr_t;
 
 typedef __vki_blksize_t    vki_blksize_t;
 typedef __vki_blkcnt_t     vki_blkcnt_t;
 typedef __vki_clock_t      vki_clock_t;
 typedef __vki_clockid_t    vki_clockid_t;
 typedef __vki_dev_t     vki_dev_t;
 typedef __vki_fflags_t     vki_fflags_t;
 typedef __vki_fixpt_t      vki_fixpt_t;
 typedef __vki_fsblkcnt_t   vki_fsblkcnt_t;
 typedef __vki_fsfilcnt_t   vki_fsfilcnt_t;
 typedef __vki_gid_t     vki_gid_t;
 typedef vki_uint32_t    vki_in_addr_t;
 typedef vki_uint16_t    vki_in_port_t;
 typedef __vki_id_t      vki_id_t;
 typedef __vki_ino_t     vki_ino_t;
 typedef __vki_key_t     vki_key_t;
 typedef __vki_lwpid_t      vki_lwpid_t;
 typedef __vki_mode_t    vki_mode_t;
 typedef __vki_nlink_t      vki_nlink_t;
 typedef __vki_off_t     vki_off_t;
 typedef __vki_pid_t     vki_pid_t;
 typedef __vki_register_t   vki_register_t;
 typedef __vki_rlim_t    vki_rlim_t;
 typedef __vki_segsz_t      vki_segsz_t;
 typedef __vki_size_t    vki_size_t;
 typedef __vki_ssize_t      vki_ssize_t;
 typedef __vki_suseconds_t  vki_suseconds_t;
 typedef __vki_time_t    vki_time_t;
 typedef __vki_timer_t      vki_timer_t;
 typedef __vki_mqd_t     vki_mqd_t;
 typedef __vki_u_register_t vki_u_register_t;
 typedef __vki_uid_t     vki_uid_t;
 typedef __vki_useconds_t   vki_useconds_t;
 typedef int             vki_cpuwhich_t;
 typedef int             vki_cpulevel_t;
 typedef int             vki_cpusetid_t;
 
 
 typedef __vki_vm_offset_t  vki_vm_offset_t;
 typedef __vki_vm_ooffset_t vki_vm_ooffset_t;
 typedef __vki_vm_paddr_t   vki_vm_paddr_t;
 typedef __vki_vm_pindex_t  vki_vm_pindex_t;
 typedef __vki_vm_size_t    vki_vm_size_t;
 
 //----------------------------------------------------------------------
 // sys/select.h
 //----------------------------------------------------------------------
 
 typedef __vki_fd_set    vki_fd_set;
 
 //----------------------------------------------------------------------
 // Now the rest of the arch-specific stuff
 //----------------------------------------------------------------------
 
 #if defined(VGA_x86)
 #  include "vki-x86-freebsd.h"
 #elif defined(VGA_amd64)
 #  include "vki-amd64-freebsd.h"
 #elif defined(VGA_arm64)
 #  include "vki-arm64-freebsd.h"
 #else
 #  error Unknown platform
 #endif
 
 //----------------------------------------------------------------------
 // freebsd version hacks
 //----------------------------------------------------------------------
 #ifndef ELFMAG
 #define ELFMAG "\177ELF"   /* magic string */
 #endif
 #ifndef SELFMAG
 #define SELFMAG   4     /* magic string size */
 #endif
 
 // see http://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239669
 #if !defined(ELF_NOTE_GNU)
 #define ELF_NOTE_GNU "GNU"
 #endif
 
 
 #define VKI_ELF_NOTE_ROUNDSIZE 4
 
 
 //----------------------------------------------------------------------
 // From sys/syslimits.h
 //----------------------------------------------------------------------
 
 #define VKI_PATH_MAX       1024
 
 
 //----------------------------------------------------------------------
 // From sys/timespec.h
 //----------------------------------------------------------------------
 
 struct vki_timespec {
    vki_time_t  tv_sec;     /* seconds */
    long     tv_nsec; /* nanoseconds */
 };
 
 struct  vki_itimerspec {
    struct  vki_timespec it_interval;    /* timer period */
    struct  vki_timespec it_value;       /* timer expiration */
 };
 
 //----------------------------------------------------------------------
 // From sys/_time.h
 //----------------------------------------------------------------------
 
 struct vki_timeval {
    vki_time_t  tv_sec;     /* seconds */
    vki_suseconds_t   tv_usec; /* microseconds */
 };
 
 //----------------------------------------------------------------------
 // From sys/time.h
 //----------------------------------------------------------------------
 
 #define VKI_CLOCK_REALTIME            0
 #define VKI_CLOCK_MONOTONIC           1
 #define VKI_CLOCK_PROCESS_CPUTIME_ID  2
 #define VKI_CLOCK_THREAD_CPUTIME_ID   3
 
 struct vki_timezone {
    int   tz_minuteswest;   /* minutes west of Greenwich */
    int   tz_dsttime; /* type of dst correction */
 };
 
 struct   vki_itimerval {
    struct   vki_timeval it_interval;   /* timer interval */
    struct   vki_timeval it_value;   /* current value */
 };
 
 //----------------------------------------------------------------------
 // From sys/timex.h
 //----------------------------------------------------------------------
 
 struct vki_ntptimeval {
    struct vki_timespec time;
    long maxerror;
    long esterror;
    long tai;
    int time_state;
 };
 
 struct vki_timex {
    unsigned int modes;  /* mode selector */
    long offset;      /* time offset (usec) */
    long freq;     /* frequency offset (scaled ppm) */
    long maxerror;    /* maximum error (usec) */
    long esterror;    /* estimated error (usec) */
    int status;    /* clock command/status */
    long constant;    /* pll time constant */
    long precision;      /* clock precision (usec) (read only) */
    long tolerance;      /* clock frequency tolerance (ppm)
              * (read only)
              */
    long ppsfreq;           /* pps frequency (scaled ppm) (ro) */
    long jitter;            /* pps jitter (us) (ro) */
    int shift;              /* interval duration (s) (shift) (ro) */
    long stabil;            /* pps stability (scaled ppm) (ro) */
    long jitcnt;            /* jitter limit exceeded (ro) */
    long calcnt;            /* calibration intervals (ro) */
    long errcnt;            /* calibration errors (ro) */
    long stbcnt;            /* stability limit exceeded (ro) */
 };
 
 #define MOD_OFFSET      0x0001   /* time offset */
 #define MOD_FREQUENCY      0x0002   /* frequency offset */
 #define MOD_MAXERROR    0x0004   /* maximum time error */
 #define MOD_ESTERROR    0x0008   /* estimated time error */
 #define MOD_STATUS      0x0010   /* clock status */
 #define MOD_TIMECONST      0x0020   /* pll time constant */
 #define MOD_PPSMAX      0x0040
 #define MOD_TAI         0x0080
 #define MOD_MICRO    0x1000
 #define MOD_NANO     0x2000
 #define MOD_CLKB     0x4000
 #define MOD_CLKA     0x8000
 
 //----------------------------------------------------------------------
 // From sys/times.h
 //----------------------------------------------------------------------
 
 struct vki_tms {
    vki_clock_t tms_utime;
    vki_clock_t tms_stime;
    vki_clock_t tms_cutime;
    vki_clock_t tms_cstime;
 };
 
 //----------------------------------------------------------------------
 // From sys/stat.h
 //----------------------------------------------------------------------
 
 /* QQQ 4.x stat layout */
 struct vki_freebsd11_stat {
    vki_uint32_t   st_dev;
    vki_uint32_t   st_ino;
    vki_mode_t  st_mode;
    vki_uint16_t st_nlink;
    vki_uid_t   st_uid;
    vki_gid_t   st_gid;
    vki_uint32_t   st_rdev;
 #if 0
    struct vki_timespec  st_atimespec;
    struct vki_timespec  st_mtimespec;
    struct vki_timespec  st_ctimespec;
 #else
    vki_time_t  st_atime;
    long     st_atime_nsec;
    vki_time_t  st_mtime;
    long     st_mtime_nsec;
    vki_time_t  st_ctime;
    long     st_ctime_nsec;
 #endif
    vki_off_t   st_size;
    vki_blkcnt_t   st_blocks;
    vki_blksize_t  st_blksize;
    vki_fflags_t   st_flags;
    vki_uint32_t   st_gen;
    vki_int32_t st_lspare;
    struct vki_timespec  st_birthtimespec;
 unsigned int :
    (8 / 2) * (16 - (int)sizeof(struct vki_timespec));
 unsigned int :
    (8 / 2) * (16 - (int)sizeof(struct vki_timespec));
 };
 
 #if defined(VGP_x86_freebsd)
 #define  VKI_STAT_TIME_T_EXT  1
 #endif
 
 /*
  * FreeBSD 12 has two versions of the stat struct
  * freebsd11_stat, which is the same as vki_stat above
  * and just stat, which is the same as vki_stat below
  * Since vki_stat is used by other OSes, it's best not to
  * use the same naming
  */
 
 struct vki_stat {
    vki_dev_t     st_dev;
    vki_ino_t     st_ino;
    vki_nlink_t   st_nlink;
    vki_mode_t   st_mode;
    vki_int16_t st_padding0;
    vki_uid_t    st_uid;
    vki_gid_t    st_gid;
    vki_int32_t st_padding1;
    vki_dev_t     st_rdev;
 #ifdef   VKI_STAT_TIME_T_EXT
    vki_int32_t st_atim_ext;
 #endif
    //struct   vki_timespec st_atim;
    vki_time_t st_atime;
    long    st_atime_nsec;
 #ifdef   VKI_STAT_TIME_T_EXT
    vki_int32_t st_mtim_ext;
 #endif
    //struct   vki_timespec st_mtim;
    vki_time_t st_mtime;
    long    st_mtime_nsec;
 #ifdef   VKI_STAT_TIME_T_EXT
    vki_int32_t st_ctim_ext;
 #endif
    //struct   vki_timespec st_ctim;
    vki_time_t st_ctime;
    long    st_ctime_nsec;
 #ifdef   VKI_STAT_TIME_T_EXT
    vki_int32_t st_btim_ext;
 #endif
    //struct   vki_timespec st_birthtim;
    vki_time_t st_btime;
    long    st_btime_nsec;
    vki_off_t    st_size;
    vki_blkcnt_t st_blocks;
    vki_blksize_t st_blksize;
    vki_fflags_t  st_flags;
    vki_uint64_t st_gen;
    vki_uint64_t st_spare[10];
 };
 
 
 //----------------------------------------------------------------------
 // From sys/sched.h
 //----------------------------------------------------------------------
 
 struct vki_sched_param {
    int sched_priority;
 };
 
 //----------------------------------------------------------------------
 // From sys/signal.h
 //----------------------------------------------------------------------
 
 #define  VKI_SIG_BLOCK  1  /*  block specified signal set */
 #define  VKI_SIG_UNBLOCK   2  /*  unblock specified signal set */
 #define  VKI_SIG_SETMASK   3  /*  set specified signal set */
 
 #define  VKI_SIG_DFL ((__vki_sighandler_t)0)
 #define  VKI_SIG_IGN ((__vki_sighandler_t)1)
 #define  VKI_SIG_ERR ((__vki_sighandler_t)-1)
 
 typedef void __vki_signalfn_t(int);
 typedef __vki_signalfn_t *__vki_sighandler_t;
 
 #define  VKI_SIGHUP     1
 #define  VKI_SIGINT     2
 #define  VKI_SIGQUIT    3
 #define  VKI_SIGILL     4
 #define  VKI_SIGTRAP    5
 #define  VKI_SIGABRT    6
 #define  VKI_SIGEMT     7
 #define  VKI_SIGFPE     8
 #define  VKI_SIGKILL    9
 #define  VKI_SIGBUS     10
 #define  VKI_SIGSEGV    11
 #define  VKI_SIGSYS     12
 #define  VKI_SIGPIPE    13
 #define  VKI_SIGALRM    14
 #define  VKI_SIGTERM    15
 #define  VKI_SIGURG     16
 #define  VKI_SIGSTOP    17
 #define  VKI_SIGTSTP    18
 #define  VKI_SIGCONT    19
 #define  VKI_SIGCHLD    20
 #define  VKI_SIGTTIN    21
 #define  VKI_SIGTTOU    22
 #define  VKI_SIGIO      23
 #define  VKI_SIGXCPU    24
 #define  VKI_SIGXFSZ    25
 #define  VKI_SIGVTALRM  26
 #define  VKI_SIGPROF    27
 #define  VKI_SIGWINCH   28
 #define  VKI_SIGINFO    29
 #define  VKI_SIGUSR1    30
 #define  VKI_SIGUSR2    31
 #define  VKI_SIGTHR     32
 #define  VKI_SIGLIBRT   33
 
 #define  VKI_SIGRTMIN      65
 #define  VKI_SIGRTMAX      126
 
 #define  VKI_SA_ONSTACK    0x0001
 #define  VKI_SA_RESTART    0x0002
 #define  VKI_SA_RESETHAND  0x0004
 #define  VKI_SA_NOCLDSTOP  0x0008
 #define  VKI_SA_NODEFER    0x0010
 #define  VKI_SA_NOCLDWAIT  0x0020
 #define  VKI_SA_SIGINFO    0x0040
 #define VKI_SA_RESTORER         0 /* FreeBSD doesn't have this */
 
 #define  VKI_SS_ONSTACK    0x0001
 #define  VKI_SS_DISABLE    0x0004
 
 #define  VKI_SA_ONESHOT    VKI_SA_RESETHAND
 #define  VKI_SA_NOMASK     VKI_SA_NODEFER
 
 struct vki_sigaction {
    __vki_sighandler_t ksa_handler;
    int      sa_flags;
    vki_sigset_t   sa_mask;
 };
 
 typedef struct vki_sigaltstack {
    void     *ss_sp;
    vki_size_t  ss_size;
    int      ss_flags;
 } vki_stack_t;
 
 typedef union vki_sigval {
    int sival_int;
    void *sival_ptr;
 } vki_sigval_t;
 
 typedef struct vki_siginfo {
    int si_signo;
    int si_errno;
    int si_code;
    vki_pid_t si_pid;
    vki_uid_t si_uid;
    int si_status;
    void *si_addr;
    vki_sigval_t si_value;
 // 666: not valid. switch to above def
 #ifdef si_band
 #undef si_band
 #endif
    long si_band;
    int __spare__[7];
 } vki_siginfo_t;
 
 /*
  * si_code values
  */
 #define VKI_SI_USER  0x10001     /* sent by kill, sigsend, raise */
 #define VKI_SI_QUEUE 0x10002
 #define VKI_SI_TIMER 0x10003
 #define VKI_SI_ASYNCIO  0x10004
 #define VKI_SI_MESGQ 0x10005
 #define VKI_SI_KERNEL   0x10006
 #define VKI_SI_LWP      0x10007
 /*
  * SIGILL si_codes
  */
 #define VKI_ILL_ILLOPC  1  /* illegal opcode */
 #define VKI_ILL_ILLOPN  2  /* illegal operand */
 #define VKI_ILL_ILLADR  3  /* illegal addressing mode */
 #define VKI_ILL_ILLTRP  4  /* illegal trap */
 #define VKI_ILL_PRVOPC  5  /* privileged opcode */
 #define VKI_ILL_PRVREG  6  /* privileged register */
 #define VKI_ILL_COPROC  7  /* coprocessor error */
 #define VKI_ILL_BADSTK  8  /* internal stack error */
 
 /*
  * SIGFPE si_codes
  */
 #define VKI_FPE_INTOVF  1  /* integer overflow */
 #define VKI_FPE_INTDIV  2  /* integer divide by zero */
 #define VKI_FPE_FLTDIV  3  /* floating point divide by zero */
 #define VKI_FPE_FLTOVF  4  /* floating point overflow */
 #define VKI_FPE_FLTUND  5  /* floating point underflow */
 #define VKI_FPE_FLTRES  6  /* floating point inexact result */
 #define VKI_FPE_FLTINV  7  /* floating point invalid operation */
 #define VKI_FPE_FLTSUB  8  /* subscript out of range */
 
 /*
  * SIGSEGV si_codes
  */
 #define VKI_SEGV_MAPERR 1  /* address not mapped to object */
 #define VKI_SEGV_ACCERR 2  /* invalid permissions for mapped object */
 /* XXX i386 and amd64 specific */
 #define  VKI_SEGV_PAGE_FAULT  12
 
 /*
  * SIGBUS si_codes
  */
 #define VKI_BUS_ADRALN  1  /* invalid address alignment */
 #define VKI_BUS_ADRERR  2  /* non-existant physical address */
 #define VKI_BUS_OBJERR  3  /* object specific hardware error */
 #define VKI_BUS_OOMERR  100   /* Non-standard: No memory.  */
 
 /*
  * SIGTRAP si_codes
  */
 #define VKI_TRAP_BRKPT  1  /* process breakpoint */
 #define VKI_TRAP_TRACE  2  /* process trace trap */
 #define VKI_TRAP_DTRACE 3   /* DTrace induced trap.                 */
 #define VKI_TRAP_CAP    4   /* Capabilities protective trap.        */
 
 /*
  * SIGCHLD si_codes
  */
 #define VKI_CLD_EXITED    1  /* child has exited */
 #define VKI_CLD_KILLED    2  /* child was killed */
 #define VKI_CLD_DUMPED    3  /* child terminated abnormally */
 #define VKI_CLD_TRAPPED   4  /* traced child has trapped */
 #define VKI_CLD_STOPPED   5  /* child has stopped */
 #define VKI_CLD_CONTINUED 6  /* stopped child has continued */
 
 #if 0 /* freebsd-6 */
 typedef struct vki_sigevent {
    int sigev_notify;
    int sigev_signo;
    vki_sigval_t sigev_value;
    union {
       int _threadid;
 
       struct {
          void (*_function)(vki_sigval_t);
          void *_attribute; /* really pthread_attr_t */
       } _sigev_thread;
       long __spare__[8];
    } _sigev_un;
 } vki_sigevent_t;
 #endif
 
 struct vki_sigevent {
    int     sigev_notify;           /* Notification type */
    union {
       int   __sigev_signo;  /* Signal number */
       int   __sigev_notify_kqueue;
    } __sigev_u;
    vki_sigval_t sigev_value;       /* Signal value */
 };
 #if 0
 #define sigev_signo             __sigev_u.__sigev_signo
 #define sigev_notify_kqueue     __sigev_u.__sigev_notify_kqueue
 #endif
 
 //----------------------------------------------------------------------
 // From sys/_iovec.h
 //----------------------------------------------------------------------
 
 struct vki_iovec {
    void *iov_base;
    __vki_size_t iov_len;
 };
 
 //----------------------------------------------------------------------
 // From sys/socket.h
 //----------------------------------------------------------------------
 
 typedef __vki_sa_family_t  vki_sa_family_t;
 typedef __vki_socklen_t    vki_socklen_t;
 
 struct vki_sockaddr {
    vki_uint8_t sa_len;
    vki_sa_family_t   sa_family;  /* address family, AF_xxx  */
    char     sa_data[14];   /* 14 bytes of protocol address  */
 };
 
 struct vki_msghdr {
    void  *  msg_name;   /* Socket name       */
    vki_socklen_t  msg_namelen;   /* Length of name    */
    struct vki_iovec *   msg_iov; /* Data blocks       */
    int      msg_iovlen; /* Number of blocks     */
    void  *  msg_control;   /* Per protocol magic (eg BSD file descriptor passing) */
    vki_socklen_t  msg_controllen;   /* Length of cmsg list */
    int      msg_flags;
 };
 
 struct vki_cmsghdr {
    vki_socklen_t  cmsg_len;   /* data byte count, including hdr */
    int    cmsg_level; /* originating protocol */
    int    cmsg_type;  /* protocol-specific type */
 };
 
 #define __VKI_CMSG_NXTHDR(ctl, len, cmsg) __vki_cmsg_nxthdr((ctl),(len),(cmsg))
 #define VKI_CMSG_NXTHDR(mhdr, cmsg) vki_cmsg_nxthdr((mhdr), (cmsg))
 
 #define VKI_CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )
 
 #define VKI_CMSG_DATA(cmsg)   ((void *)((char *)(cmsg) + VKI_CMSG_ALIGN(sizeof(struct vki_cmsghdr))))
 
 #define __VKI_CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct vki_cmsghdr) ? \
               (struct vki_cmsghdr *)(ctl) : \
               (struct vki_cmsghdr *)NULL)
 #define VKI_CMSG_FIRSTHDR(msg)   __VKI_CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)
 
 // [[Urgh, this is revolting...]
 // QQQ check
 static __inline struct vki_cmsghdr * __vki_cmsg_nxthdr(void *__ctl, vki_socklen_t __size,
       struct vki_cmsghdr *__cmsg)
 {
    struct vki_cmsghdr * __ptr;
 
    __ptr = (struct vki_cmsghdr*)(((unsigned char *) __cmsg) +  VKI_CMSG_ALIGN(__cmsg->cmsg_len));
    if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)
       return (struct vki_cmsghdr *)0;
 
    return __ptr;
 }
 
 static __inline struct vki_cmsghdr * vki_cmsg_nxthdr (struct vki_msghdr *__msg, struct vki_cmsghdr *__cmsg)
 {
    return __vki_cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
 }
 
 #define  VKI_SCM_RIGHTS 0x01     /* rw: access rights (array of int) */
 
 #define VKI_AF_UNIX  1  /* Unix domain sockets     */
 #define VKI_AF_INET  2  /* Internet IP Protocol    */
 #define VKI_AF_INET6 28 /* IP version 6         */
 
 #define VKI_MSG_NOSIGNAL   0x20000  /* Do not generate SIGPIPE */
 
 #define VKI_SOL_SOCKET  0xffff
 
 #define VKI_SO_TYPE  0x1008
 
 #define VKI_SOCK_STREAM 1
 
 #include <netinet/tcp.h> // TCP_NODELAY
 
 #define VKI_TCP_NODELAY  TCP_NODELAY
 
 #include <netinet/in.h> // IPPROTO_TCP
 
 #define VKI_IPPROTO_TCP  IPPROTO_TCP
 
 struct vki_sf_hdtr {
    struct iovec *headers;
    int hdr_cnt;
    struct iovec *trailers;
    int trl_cnt;
 };
 
 
 //----------------------------------------------------------------------
 // From netinet/in.h
 //----------------------------------------------------------------------
 
 struct vki_in_addr {
    vki_in_addr_t  s_addr;
 };
 
 /* Structure describing an Internet (IP) socket address. */
 #define __VKI_SOCK_SIZE__  16 /* sizeof(struct sockaddr) */
 struct vki_sockaddr_in {
    vki_uint8_t     sin_len;
    vki_sa_family_t sin_family; /* Address family    */
    vki_in_port_t      sin_port;   /* Port number       */
    struct vki_in_addr sin_addr;   /* Internet address     */
    char         sin_zero[8];
 };
 
 //----------------------------------------------------------------------
 // From netinet6/in6.h
 //----------------------------------------------------------------------
 
 struct vki_in6_addr {
    union {
       vki_uint8_t u6_addr8[16];
       vki_uint16_t   u6_addr16[8];
       vki_uint32_t   u6_addr32[4];
    } vki_in6_u;
 #define vki_s6_addr     vki_in6_u.u6_addr8
 #define vki_s6_addr16      vki_in6_u.u6_addr16
 #define vki_s6_addr32      vki_in6_u.u6_addr32
 };
 
 struct vki_sockaddr_in6 {
    vki_uint8_t    sin6_len;
    vki_sa_family_t      sin6_family;    /* AF_INET6 */
    vki_uint16_t      sin6_port;      /* Transport layer port # */
    vki_uint32_t      sin6_flowinfo;  /* IPv6 flow information */
    struct vki_in6_addr  sin6_addr;      /* IPv6 address */
    vki_uint32_t      sin6_scope_id;  /* scope id (new in RFC2553) */
 };
 
 //----------------------------------------------------------------------
 // From netinet/sctp_uio.h
 //----------------------------------------------------------------------
 #define VKI_SCTP_ALIGN_RESV_PAD 92
 
 typedef vki_uint32_t vki_sctp_assoc_t;
 
 struct vki_sctp_sndrcvinfo {
    vki_uint16_t sinfo_stream;
    vki_uint16_t sinfo_ssn;
    vki_uint16_t sinfo_flags;
    vki_uint32_t sinfo_ppid;
    vki_uint32_t sinfo_context;
    vki_uint32_t sinfo_timetolive;
    vki_uint32_t sinfo_tsn;
    vki_uint32_t sinfo_cumtsn;
    vki_sctp_assoc_t sinfo_assoc_id;
    vki_uint16_t sinfo_keynumber;
    vki_uint16_t sinfo_keynumber_valid;
    vki_uint8_t __reserve_pad[VKI_SCTP_ALIGN_RESV_PAD];
 };
 
 //----------------------------------------------------------------------
 // From sys/un.h
 //----------------------------------------------------------------------
 
 #define VKI_UNIX_PATH_MAX  104   /* QQQ overridden by sun_len */
 
 struct vki_sockaddr_un {
    unsigned char sun_len;
    vki_sa_family_t sun_family;   /* AF_UNIX */
    char sun_path[VKI_UNIX_PATH_MAX];   /* pathname */
 };
 
 //----------------------------------------------------------------------
 // From aio.h
 //----------------------------------------------------------------------
 
 struct vki___aiocb_private {
    long    status;
    long    error;
    void    *kernelinfo;
 };
 
 typedef struct vki_aiocb {
    int     aio_fildes;
    vki_off_t   aio_offset;
    volatile void *aio_buf;
    vki_size_t  aio_nbytes;
    int     __spare__[2];
    void    *__spare2__;
    int     aio_lio_opcode;
    int     aio_reqprio;
    struct  vki___aiocb_private _aiocb_private;
    struct  vki_sigevent aio_sigevent;
 } aiocb_t;
 
 #define VKI_LIO_NOP                 0x0
 #define VKI_LIO_WRITE               0x1
 #define VKI_LIO_READ                0x2
 
 #define VKI_LIO_NOWAIT              0x0
 #define VKI_LIO_WAIT                0x1
 
 
 #define VKI_LIO_NOWAIT 0x0
 
 //----------------------------------------------------------------------
 // From sys/mount.h
 //----------------------------------------------------------------------
 
 typedef struct vki_fsid {
    vki_int32_t val[2];
 } vki_fsid_t;
 #define VKI_OMFSNAMELEN 16
 #define VKI_OMNAMELEN   (88 - 2 * sizeof(long))
 #define VKI_MFSNAMELEN  16
 #define VKI_FREEBSD11_MNAMELEN   88
 
 struct vki_freebsd11_statfs {
    vki_uint32_t f_version;
    vki_uint32_t f_type;
    vki_uint64_t f_flags;
    vki_uint64_t f_bsize;
    vki_uint64_t f_iosize;
    vki_uint64_t f_blocks;
    vki_uint64_t f_bfree;
    vki_int64_t  f_bavail;
    vki_uint64_t f_files;
    vki_int64_t  f_ffree;
    vki_uint64_t f_syncwrites;
    vki_uint64_t f_asyncwrites;
    vki_uint64_t f_syncreads;
    vki_uint64_t f_asyncreads;
    vki_uint64_t f_spare[10];
    vki_uint32_t f_namemax;
    vki_uid_t     f_owner;
    vki_fsid_t    f_fsid;
    char      f_charspare[80];
    char      f_fstypename[VKI_OMFSNAMELEN];
    char      f_mntfromname[VKI_FREEBSD11_MNAMELEN];
    char      f_mntonname[VKI_FREEBSD11_MNAMELEN];
 };
 
 
 #define MAXFIDSZ        16
 
 struct vki_fid {
    vki_uint16_t    fid_len;
    vki_uint16_t    fid_reserved;
    char            fid_data[MAXFIDSZ];
 };
 
 struct vki_fhandle {
    vki_fsid_t  fh_fsid;
    struct vki_fid fh_fid;
 };
 
 
 #define VKI_MNAMELEN        1024
 struct vki_statfs {
    vki_uint32_t f_version;
    vki_uint32_t f_type;
    vki_uint64_t f_flags;
    vki_uint64_t f_bsize;
    vki_uint64_t f_iosize;
    vki_uint64_t f_blocks;
    vki_uint64_t f_bfree;
    vki_int64_t  f_bavail;
    vki_uint64_t f_files;
    vki_int64_t  f_ffree;
    vki_uint64_t f_syncwrites;
    vki_uint64_t f_asyncwrites;
    vki_uint64_t f_syncreads;
    vki_uint64_t f_asyncreads;
    vki_uint64_t f_spare[10];
    vki_uint32_t f_namemax;
    vki_uid_t     f_owner;
    vki_fsid_t    f_fsid;
    char      f_charspare[80];
    char      f_fstypename[VKI_MFSNAMELEN];
    char      f_mntfromname[VKI_MNAMELEN];
    char      f_mntonname[VKI_MNAMELEN];
 };
 
 typedef struct vki_fhandle  vki_fhandle_t;
 
 //----------------------------------------------------------------------
 // From sys/ttycom.h
 //----------------------------------------------------------------------
 
 struct vki_winsize {
    unsigned short ws_row;
    unsigned short ws_col;
    unsigned short ws_xpixel;
    unsigned short ws_ypixel;
 };
 
 
 //----------------------------------------------------------------------
 // From sys/termios.h
 //----------------------------------------------------------------------
 
 typedef unsigned int    vki_tcflag_t;
 typedef unsigned char   vki_cc_t;
 typedef unsigned int    vki_speed_t;
 
 #define VKI_NCCS 20
 struct vki_termios {
    vki_tcflag_t c_iflag;      /* input mode flags */
    vki_tcflag_t c_oflag;      /* output mode flags */
    vki_tcflag_t c_cflag;      /* control mode flags */
    vki_tcflag_t c_lflag;      /* local mode flags */
    vki_cc_t c_cc[VKI_NCCS];   /* control characters */
    vki_speed_t c_ispeed;
    vki_speed_t c_ospeed;
 };
 
 //----------------------------------------------------------------------
 // From sys/ioccom.h
 //----------------------------------------------------------------------
 
 /* QQQ keep linux's naming, but use our layout */
 
 /*
  * We actually have a 16 bit "base" ioctl, which may or may not be decoded
  * into number/group
  */
 #define _VKI_IOC_BASEBITS  16U
 #define _VKI_IOC_NRBITS    8U  /* "num" on freebsd */
 #define _VKI_IOC_TYPEBITS  8U  /* "group" on freebsd */
 
 #define _VKI_IOC_SIZEBITS  13U
 #define _VKI_IOC_DIRBITS   3U
 
 #define _VKI_IOC_BASEMASK  ((1ul << _VKI_IOC_BASEBITS)-1)
 #define _VKI_IOC_NRMASK    ((1ul << _VKI_IOC_NRBITS)-1)
 #define _VKI_IOC_TYPEMASK  ((1ul << _VKI_IOC_TYPEBITS)-1)
 #define _VKI_IOC_SIZEMASK  ((1ul << _VKI_IOC_SIZEBITS)-1)
 #define _VKI_IOC_DIRMASK   ((1ul << _VKI_IOC_DIRBITS)-1)
 
 #define _VKI_IOC_BASESHIFT   0U
 #define _VKI_IOC_NRSHIFT   0U
 #define _VKI_IOC_TYPESHIFT (_VKI_IOC_NRSHIFT+_VKI_IOC_NRBITS)
 #define _VKI_IOC_SIZESHIFT (_VKI_IOC_TYPESHIFT+_VKI_IOC_TYPEBITS)
 #define _VKI_IOC_DIRSHIFT  (_VKI_IOC_SIZESHIFT+_VKI_IOC_SIZEBITS)
 
 #define _VKI_IOC_NONE   1U /* "void" on freebsd, as a specific mode */
 #define _VKI_IOC_READ   2U /* "out", copyout in reversed linux terminology */
 #define _VKI_IOC_WRITE  4U /* "in", copyin in reversed linux terminology */
 #define _VKI_IOC_RDWR   6U /* "inout", copyin and copyout */
 
 #define _VKI_IOC(dir,type,nr,size) \
    (((dir)  << _VKI_IOC_DIRSHIFT) | \
     ((type) << _VKI_IOC_TYPESHIFT) | \
     ((nr)   << _VKI_IOC_NRSHIFT) | \
     ((size) << _VKI_IOC_SIZESHIFT))
 
 /* provoke compile error for invalid uses of size argument */
 extern unsigned int __vki_invalid_size_argument_for_IOC;
 #define _VKI_IOC_TYPECHECK(t) \
    ((sizeof(t) == sizeof(t[1]) && \
      sizeof(t) < (1 << _VKI_IOC_SIZEBITS)) ? \
      sizeof(t) : __vki_invalid_size_argument_for_IOC)
 
 /* used to create numbers */
 #define _VKI_IO(type,nr)   _VKI_IOC(_VKI_IOC_NONE,(type),(nr),0)
 #define _VKI_IOR(type,nr,size)   _VKI_IOC(_VKI_IOC_READ,(type),(nr),(_VKI_IOC_TYPECHECK(size)))
 #define _VKI_IOW(type,nr,size)   _VKI_IOC(_VKI_IOC_WRITE,(type),(nr),(_VKI_IOC_TYPECHECK(size)))
 #define _VKI_IOWR(type,nr,size)  _VKI_IOC(_VKI_IOC_READ|_VKI_IOC_WRITE,(type),(nr),(_VKI_IOC_TYPECHECK(size)))
 
 /* used to decode ioctl numbers.. */
 #define _VKI_IOC_DIR(nr)   (((nr) >> _VKI_IOC_DIRSHIFT) & _VKI_IOC_DIRMASK)
 #define _VKI_IOC_TYPE(nr)  (((nr) >> _VKI_IOC_TYPESHIFT) & _VKI_IOC_TYPEMASK)
 #define _VKI_IOC_NR(nr)    (((nr) >> _VKI_IOC_NRSHIFT) & _VKI_IOC_NRMASK)
 #define _VKI_IOC_SIZE(nr)  (((nr) >> _VKI_IOC_SIZESHIFT) & _VKI_IOC_SIZEMASK)
 #define _VKI_IOC_BASE(nr)  (((nr) >> _VKI_IOC_BASESHIFT) & _VKI_IOC_BASEMASK)
 
 //----------------------------------------------------------------------
 // From sys/random.h
 //----------------------------------------------------------------------
 
 #define VKI_GRND_NONBLOCK 0x1U
 
 //----------------------------------------------------------------------
 // From sys/termios.h
 //----------------------------------------------------------------------
 
 #define VKI_TIOCFLUSH  _VKI_IOW('t', 16, int);
 #define VKI_TIOCGETA   _VKI_IOR('t', 19, struct vki_termios)  /* get termios */
 #define VKI_TIOCSETA   _VKI_IOR('t', 20, struct vki_termios)  /* set termios */
 #define VKI_TIOCSETAW  _VKI_IOR('t', 21, struct vki_termios)  /* drain,set */
 #define VKI_TIOCSETAF  _VKI_IOR('t', 22, struct vki_termios)  /* flush,set */
 
 #define _VKI_TIOCPTMASTER  _VKI_IO('t', 28)    /* pts master validation */
 
 #define VKI_TIOCSWINSZ  _VKI_IOW('t', 103, struct vki_winsize)  /* set window size */
 #define VKI_TIOCGWINSZ  _VKI_IOR('t', 104, struct vki_winsize)  /* get window size */
 
 #define VKI_TIOCMGET _VKI_IOR('t', 106, int) /* get all modem bits */
 #define VKI_TIOCMBIC _VKI_IOW('t', 107, int) /* bic modem bits */
 #define VKI_TIOCMBIS _VKI_IOW('t', 108, int) /* bis modem bits */
 #define VKI_TIOCMSET _VKI_IOW('t', 109, int) /* set all modem bits */
 #define  VKI_TIOCSTART  _VKI_IO('t', 110)    /* start output, like ^Q */
 #define  VKI_TIOCSTOP   _VKI_IO('t', 111)    /* stop output, like ^S */
 #define  VKI_TIOCPKT    _VKI_IOW('t', 112, int) /* pty: set/clear packet mode */
 
 #define  VKI_TIOCSPGRP  _VKI_IOW('t', 118, int)    /* set pgrp */
 #define  VKI_TIOCGPGRP  _VKI_IOR('t', 119, int)    /* get pgrp */
 #define  VKI_TIOCCBRK   _VKI_IO('t', 122)
 #define  VKI_TIOCSBRK   _VKI_IO('t', 123)
 
 
 //----------------------------------------------------------------------
 // From sys/filio.h
 //----------------------------------------------------------------------
 
 #define VKI_FIOCLEX  _VKI_IO('f', 1)      /* close on exec */
 #define VKI_FIONCLEX _VKI_IO('f', 2)      /* no close on exec */
 #define VKI_FIONREAD _VKI_IOR('f', 127, int)
 #define VKI_FIONBIO  _VKI_IOW('f', 126, int)
 #define VKI_FIOASYNC _VKI_IOW('f', 125, int)
 #define VKI_FIOSETOWN   _VKI_IOW('f', 124, int)
 #define VKI_FIOGETOWN   _VKI_IOW('f', 123, int)
 struct vki_fiodgname_arg {
    int     len;
    void    *buf;
 };
 #define VKI_FIODGNAME   _VKI_IOW('f', 120, struct vki_fiodgname_arg) /* get dev. name */
 
 //----------------------------------------------------------------------
 // From net/bpf.h
 //----------------------------------------------------------------------
 
 struct vki_bpf_program {
    vki_u_int bf_len;
    struct vki_bpf_insn *bf_insns;
 };
 
 typedef vki_u_int32_t vki_bpf_u_int32;
 
 struct vki_bpf_insn {
    u_short         code;
    u_char          jt;
    u_char          jf;
    vki_bpf_u_int32     k;
 };
 
 
 #define VKI_BIOCSETF _VKI_IOW('B', 103, struct vki_bpf_program)
 
 //----------------------------------------------------------------------
 // From net/if.h
 //----------------------------------------------------------------------
 #define  VKI_IFNAMSIZ   16
 
 struct vki_ifmediareq {
    char    ifm_name[VKI_IFNAMSIZ];
    int     ifm_current;
    int     ifm_mask;
    int     ifm_status;
    int     ifm_active;
    int     ifm_count;
    int     *ifm_ulist;
 };
 
 #define VKI_IFSTATMAX       800             /* 10 lines of text */
 struct vki_ifstat {
    char    ifs_name[VKI_IFNAMSIZ];     /* if name, e.g. "en0" */
    char    ascii[VKI_IFSTATMAX + 1];
 };
 
 struct vki_ifreq_buffer {
    vki_size_t  length;
    void    *buffer;
 };
 
 struct vki_ifreq_nv_req {
    vki_u_int   buf_length;     /* Total size of buffer,
                         u_int for ABI struct ifreq */
    vki_u_int   length;         /* Length of the filled part */
    void    *buffer;        /* Buffer itself, containing packed nv */
 };
 
 struct vki_ifreq {
    char    ifr_name[VKI_IFNAMSIZ];             /* if name, e.g. "en0" */
    union {
       struct  vki_sockaddr ifru_addr;
       struct  vki_sockaddr ifru_dstaddr;
       struct  vki_sockaddr ifru_broadaddr;
       struct  vki_ifreq_buffer ifru_buffer;
       short   ifru_flags[2];
       short   ifru_index;
       int     ifru_jid;
       int     ifru_metric;
       int     ifru_mtu;
       int     ifru_phys;
       int     ifru_media;
       __vki_caddr_t ifru_data;
       int     ifru_cap[2];
       vki_u_int   ifru_fib;
       vki_u_char  ifru_vlan_pcp;
       struct  vki_ifreq_nv_req ifru_nv;
    } ifr_ifru;
 };
 
 struct vki_ifconf {
    int     ifc_len;                /* size of associated buffer */
    union {
       __vki_caddr_t ifcu_buf;
       struct  vki_ifreq *ifcu_req;
    } ifc_ifcu;
 };
 
 #define VKI_SIOCGIFSTATUS _VKI_IOWR('i', 59, struct vki_ifstat)
 //----------------------------------------------------------------------
 // From sys/sockio.h
 //----------------------------------------------------------------------
 #define VKI_SIOCGIFCONF _VKI_IOWR('i', 36, struct vki_ifconf)   /* get ifnet list */
 #define VKI_SIOCGIFMEDIA  _VKI_IOWR('i', 56, struct vki_ifmediareq)
 
 //----------------------------------------------------------------------
 // From sys/poll.h
 //----------------------------------------------------------------------
 
 #define VKI_POLLIN      0x0001
 
 struct vki_pollfd {
    int fd;
    short events;
    short revents;
 };
 
 //----------------------------------------------------------------------
 // From sys/event.h
 //----------------------------------------------------------------------
 struct vki_kevent_freebsd11 {
    vki_uintptr_t  ident;
    vki_int16_t    filter;
    vki_uint16_t   flags;
    vki_uint32_t   fflags;
    vki_intptr_t   data;
    void           *udata;
 };
 
 struct vki_kevent {
    vki_uintptr_t  ident;
    vki_int16_t    filter;
    vki_uint16_t   flags;
    vki_uint32_t   fflags;
    vki_int64_t    data;
    void           *udata;
    vki_uint64_t   ext[4];
 };
 
 
 // QQQ sort
 
 //----------------------------------------------------------------------
 // From sys/resource.h
 //----------------------------------------------------------------------
 
 #define VKI_RUSAGE_SELF     0
 #define VKI_RUSAGE_CHILDREN -1
 #define VKI_RUSAGE_THREAD   1
 
 struct   vki_rusage {
    struct vki_timeval ru_utime;  /* user time used */
    struct vki_timeval ru_stime;  /* system time used */
    long  ru_maxrss;     /* maximum resident set size */
    long  ru_ixrss;      /* integral shared memory size */
    long  ru_idrss;      /* integral unshared data size */
    long  ru_isrss;      /* integral unshared stack size */
    long  ru_minflt;     /* page reclaims */
    long  ru_majflt;     /* page faults */
    long  ru_nswap;      /* swaps */
    long  ru_inblock;    /* block input operations */
    long  ru_oublock;    /* block output operations */
    long  ru_msgsnd;     /* messages sent */
    long  ru_msgrcv;     /* messages received */
    long  ru_nsignals;      /* signals received */
    long  ru_nvcsw;      /* voluntary context switches */
    long  ru_nivcsw;     /* involuntary " */
 };
 
 struct vki_rlimit {
    vki_rlim_t  rlim_cur;
    vki_rlim_t  rlim_max;
 };
 
 #define VKI_RLIMIT_DATA    2  /* max data size */
 #define VKI_RLIMIT_STACK   3  /* max stack size */
 #define VKI_RLIMIT_CORE    4  /* max core file size */
 #define VKI_RLIMIT_NOFILE  8  /* max number of open files */
 
 struct vki___wrusage {
    struct vki_rusage   wru_self;
    struct vki_rusage   wru_children;
 };
 
 
 //----------------------------------------------------------------------
 // From sys/procfs.h
 //----------------------------------------------------------------------
 
 #define VKI_PRSTATUS_VERSION  1
 struct vki_elf_prstatus {
    int      pr_version; /* version of struct - PRSTATUS_VERSION */
    vki_size_t  pr_statussz;
    vki_size_t  pr_gregsetsz;
    vki_size_t  pr_fpregsetsz;
    int      pr_osreldate;
    int      pr_cursig;  /* Current signal */
    vki_pid_t   pr_pid;
    vki_elf_gregset_t pr_reg;  /* GP registers */
 };
 
 #define VKI_ELF_PRARGSZ (80)  /* Number of chars for args */
 #define VKI_MAXCOMLEN   (16)
 
 #define  VKI_PRPSINFO_VERSION 1
 struct vki_elf_prpsinfo {
    int   pr_version; /* version of struct - PRPSINFO_VERSION */
    vki_size_t  pr_psinfosz;
    char  pr_fname[VKI_MAXCOMLEN+1];    /* filename of executable */
    char  pr_psargs[VKI_ELF_PRARGSZ];   /* initial part of arg list */
 };
 
 //----------------------------------------------------------------------
 // From posix4/mqueue.h
 //----------------------------------------------------------------------
 
 struct vki_mq_attr {
    long  mq_flags;   /* message queue flags        */
    long  mq_maxmsg;  /* maximum number of messages    */
    long  mq_msgsize; /* maximum message size       */
    long  mq_curmsgs; /* number of messages currently queued */
 };
 
 //----------------------------------------------------------------------
 // From sys/ucontext.h
 //----------------------------------------------------------------------
 
 #define  VKI_UCF_SWAPPED   1
 
 struct vki_ucontext {
    vki_sigset_t         uc_sigmask;
    struct vki_mcontext  uc_mcontext;
    struct vki_ucontext* uc_link;
    vki_stack_t          uc_stack;
    int                  uc_flags;
    unsigned int         __spare__[4];
 };
 
 //----------------------------------------------------------------------
 // From sys/utsname.h
 //----------------------------------------------------------------------
 
 #define VKI_SYS_NMLN        32
 
 struct vki_utsname {
    char    sysname[VKI_SYS_NMLN];      /* Name of this OS. */
    char    nodename[VKI_SYS_NMLN];     /* Name of this network node. */
    char    release[VKI_SYS_NMLN];      /* Release level. */
    char    version[VKI_SYS_NMLN];      /* Version level. */
    char    machine[VKI_SYS_NMLN];      /* Hardware type. */
 };
 
 #define VKI_IPC_CREAT  00001000   /* create if key is nonexistent */
 #define VKI_IPC_EXCL   00002000   /* fail if key exists */
 #define VKI_IPC_NOWAIT 00004000   /* return error on wait */
 
 #define VKI_IPC_RMID 0     /* remove resource */
 #define VKI_IPC_SET  1     /* set ipc_perm options */
 #define VKI_IPC_STAT 2     /* get ipc_perm options */
 #define VKI_IPC_INFO 3     /* only used by Linux compatibilty shm_ctl */
 
 //----------------------------------------------------------------------
 // From sys/ipc.h
 //----------------------------------------------------------------------
 
 struct vki_ipc_perm_old {
    unsigned short cuid;
    unsigned short cgid;
    unsigned short uid;
    unsigned short gid;
    unsigned short mode;
    unsigned short seq;
    vki_key_t   key;
 };
 
 struct vki_ipc_perm {
    vki_uid_t   cuid;
    vki_gid_t   cgid;
    vki_uid_t   uid;
    vki_gid_t   gid;
    vki_mode_t  mode;
    unsigned short seq;
    vki_key_t   key;
 };
 
 //----------------------------------------------------------------------
 // From sys/sem.h
 //----------------------------------------------------------------------
 
 #define VKI_GETALL  6       /* get all semval's */
 #define VKI_SETVAL  8       /* set semval */
 #define VKI_SETALL  9       /* set all semval's */
 #define VKI_SEM_STAT 10
 #define VKI_SEM_INFO 11
 
 struct vki_semid_ds_old {
    struct vki_ipc_perm_old sem_perm;
    struct sem      *__sem_base;
    unsigned short  sem_nsems;
    vki_time_t      sem_otime;
    long            sem_pad1;
    vki_time_t      sem_ctime;
    long            sem_pad2;
    long            sem_pad3[4];
 };
 
 
 /* Obsolete, used only for backwards compatibility and libc5 compiles */
 struct vki_semid_ds {
    struct vki_ipc_perm  sem_perm;      /* permissions .. see ipc.h */
    // [[Use void* to avoid excess header copying]]
    void/*struct sem  */*sem_base;      /* ptr to first semaphore in array */
    unsigned short    sem_nsems;     /* no. of semaphores in array */
    vki_time_t     sem_otime;     /* last semop time */
    vki_time_t     sem_ctime;     /* last change time */
 };
 
 struct vki_sembuf {
    vki_uint16_t   sem_num; /* semaphore index in array */
    vki_int16_t sem_op;     /* semaphore operation */
    vki_int16_t sem_flg; /* operation flags */
 };
 
 union vki_semun {
    int val;       /* value for SETVAL */
    struct vki_semid_ds *buf;  /* buffer for IPC_STAT & IPC_SET */
    vki_uint16_t *array; /* array for GETALL & SETALL */
 };
 
 
 //----------------------------------------------------------------------
 // From sys/errno.h
 //----------------------------------------------------------------------
 
 #define VKI_ERESTART -1
 #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_EIO             5               /* Input/output error */
 #define VKI_ENXIO           6               /* Device not configured */
 #define VKI_E2BIG           7               /* Argument list too long */
 #define VKI_ENOEXEC         8               /* Exec format error */
 #define VKI_EBADF           9               /* Bad file descriptor */
 #define VKI_ECHILD          10              /* No child processes */
 #define VKI_EDEADLK         11              /* Resource deadlock avoided */
 #define VKI_ENOMEM          12              /* Cannot allocate memory */
 #define VKI_EACCES          13              /* Permission denied */
 #define VKI_EFAULT          14              /* Bad address */
 #define VKI_ENOTBLK         15              /* Block device required */
 #define VKI_EBUSY           16              /* Device busy */
 #define VKI_EEXIST          17              /* File exists */
 #define VKI_EXDEV           18              /* Cross-device link */
 #define VKI_ENODEV          19              /* Operation not supported by device */
 #define VKI_ENOTDIR         20              /* Not a directory */
 #define VKI_EISDIR          21              /* Is a directory */
 #define VKI_EINVAL          22              /* Invalid argument */
 #define VKI_ENFILE          23              /* Too many open files in system */
 #define VKI_EMFILE          24              /* Too many open files */
 #define VKI_ENOTTY          25              /* Inappropriate ioctl for device */
 #define VKI_ETXTBSY         26              /* Text file busy */
 #define VKI_EFBIG           27              /* File too large */
 #define VKI_ENOSPC          28              /* No space left on device */
 #define VKI_ESPIPE          29              /* Illegal seek */
 #define VKI_EROFS           30              /* Read-only filesystem */
 #define VKI_EMLINK          31              /* Too many links */
 #define VKI_EPIPE           32              /* Broken pipe */
 #define VKI_EDOM            33              /* Numerical argument out of domain */
 #define VKI_ERANGE          34              /* Result too large */
 #define VKI_EAGAIN          35              /* Resource temporarily unavailable */
 #define VKI_EWOULDBLOCK     VKI_EAGAIN          /* Operation would block */
 #define VKI_EINPROGRESS     36              /* Operation now in progress */
 #define VKI_EALREADY        37              /* Operation already in progress */
 #define VKI_ENOTSOCK        38              /* Socket operation on non-socket */
 #define VKI_EDESTADDRREQ    39              /* Destination address required */
 #define VKI_EMSGSIZE        40              /* Message too long */
 #define VKI_EPROTOTYPE      41              /* Protocol wrong type for socket */
 #define VKI_ENOPROTOOPT     42              /* Protocol not available */
 #define VKI_EPROTONOSUPPORT 43              /* Protocol not supported */
 #define VKI_ESOCKTNOSUPPORT 44              /* Socket type not supported */
 #define VKI_EOPNOTSUPP      45              /* Operation not supported */
 #define VKI_ENOTSUP         VKI_EOPNOTSUPP      /* Operation not supported */
 #define VKI_EPFNOSUPPORT    46              /* Protocol family not supported */
 #define VKI_EAFNOSUPPORT    47              /* Address family not supported by protocol family */
 #define VKI_EADDRINUSE      48              /* Address already in use */
 #define VKI_EADDRNOTAVAIL   49
 #define VKI_ENETDOWN        50              /* Network is down */
 #define VKI_ENETUNREACH     51              /* Network is unreachable */
 #define VKI_ENETRESET       52              /* Network dropped connection on reset */
 #define VKI_ECONNABORTED    53              /* Software caused connection abort */
 #define VKI_ECONNRESET      54              /* Connection reset by peer */
 #define VKI_ENOBUFS         55              /* No buffer space available */
 #define VKI_EISCONN         56              /* Socket is already connected */
 #define VKI_ENOTCONN        57              /* Socket is not connected */
 #define VKI_ESHUTDOWN       58              /* Can't send after socket shutdown */
 #define VKI_ETOOMANYREFS    59              /* Too many references: can't splice */
 #define VKI_ETIMEDOUT       60              /* Operation timed out */
 #define VKI_ECONNREFUSED    61              /* Connection refused */
 #define VKI_ELOOP           62              /* Too many levels of symbolic links */
 #define VKI_ENAMETOOLONG    63              /* File name too long */
 #define VKI_EHOSTDOWN       64              /* Host is down */
 #define VKI_EHOSTUNREACH    65              /* No route to host */
 #define VKI_ENOTEMPTY       66              /* Directory not empty */
 #define VKI_EPROCLIM        67              /* Too many processes */
 #define VKI_EUSERS          68              /* Too many users */
 #define VKI_EDQUOT          69              /* Disc quota exceeded */
 #define VKI_ESTALE          70              /* Stale NFS file handle */
 #define VKI_EREMOTE         71              /* Too many levels of remote in path */
 #define VKI_EBADRPC         72              /* RPC struct is bad */
 #define VKI_ERPCMISMATCH    73              /* RPC version wrong */
 #define VKI_EPROGUNAVAIL    74              /* RPC prog. not avail */
 #define VKI_EPROGMISMATCH   75              /* Program version wrong */
 #define VKI_EPROCUNAVAIL    76              /* Bad procedure for program */
 #define VKI_ENOLCK          77              /* No locks available */
 #define VKI_ENOSYS          78              /* Function not implemented */
 #define VKI_EFTYPE          79              /* Inappropriate file type or format */
 #define VKI_EAUTH           80              /* Authentication error */
 #define VKI_ENEEDAUTH       81              /* Need authenticator */
 #define VKI_EIDRM           82              /* Identifier removed */
 #define VKI_ENOMSG          83              /* No message of desired type */
 #define VKI_EOVERFLOW       84              /* Value too large to be stored in data type */
 #define VKI_ECANCELED       85              /* Operation canceled */
 #define VKI_EILSEQ          86              /* Illegal byte sequence */
 #define VKI_ENOATTR         87              /* Attribute not found */
 #define VKI_EDOOFUS         88              /* Programming error */
 #define VKI_EBADMSG         89              /* Bad message */
 #define VKI_EMULTIHOP       90              /* Multihop attempted */
 #define VKI_ENOLINK         91              /* Link has been severed */
 #define VKI_EPROTO          92              /* Protocol error */
 #define VKI_ENOTCAPABLE     93              /* Capabilities insufficient */
 #define VKI_ECAPMODE        94              /* Not permitted in capability mode */
 
 //----------------------------------------------------------------------
 // From sys/wait.h
 //----------------------------------------------------------------------
 
 #define VKI_WNOHANG  0x00000001
 
 typedef enum vki_idtype {
    VKI_P_PID,
    VKI_P_PPID,
    VKI_P_PGID,
    VKI_P_SID,
    VKI_P_CID,
    VKI_P_UID,
    VKI_P_GID,
    VKI_P_ALL,
    VKI_P_LWPID,
    VKI_P_TASKID,
    VKI_P_PROJID,
    VLI_P_POOLID,
    VKI_P_JAILID,
    VKI_P_CTID,
    VKI_P_CPUID,
    VKI_P_PSETID
 } vki_idtype_t;
 
 //----------------------------------------------------------------------
 // From sys/mman.h
 //----------------------------------------------------------------------
 
 #define VKI_PROT_NONE   0x00     /* No page permissions */
 #define VKI_PROT_READ   0x01     /* page can be read */
 #define VKI_PROT_WRITE  0x02     /* page can be written */
 #define VKI_PROT_EXEC   0x04     /* page can be executed */
 
 #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_NORESERVE  0x0040      /* don't check for reservations */
 #define  VKI_MAP_STACK  0x400
 #define VKI_MAP_ANON 0x1000   /* don't use a file */
 #define  VKI_MAP_ANONYMOUS VKI_MAP_ANON
 
 //----------------------------------------------------------------------
 // From sys/stat.h
 //----------------------------------------------------------------------
 
 #define VKI_S_IFMT  00170000
 
 #define VKI_S_IFWHT  0160000
 #define VKI_S_IFSOCK 0140000
 #define VKI_S_IFLNK  0120000
 #define VKI_S_IFREG  0100000
 #define VKI_S_IFBLK  0060000
 #define VKI_S_IFDIR  0040000
 #define VKI_S_IFCHR  0020000
 #define VKI_S_IFIFO  0010000
 #define VKI_S_ISUID  0004000
 #define VKI_S_ISGID  0002000
 #define VKI_S_ISTXT  0001000
 
 #define VKI_S_ISLNK(m)  (((m) & VKI_S_IFMT) == VKI_S_IFLNK)
 #define VKI_S_ISREG(m)  (((m) & VKI_S_IFMT) == VKI_S_IFREG)
 #define VKI_S_ISDIR(m)  (((m) & VKI_S_IFMT) == VKI_S_IFDIR)
 #define VKI_S_ISCHR(m)  (((m) & VKI_S_IFMT) == VKI_S_IFCHR)
 #define VKI_S_ISBLK(m)  (((m) & VKI_S_IFMT) == VKI_S_IFBLK)
 #define VKI_S_ISFIFO(m) (((m) & VKI_S_IFMT) == VKI_S_IFIFO)
 #define VKI_S_ISSOCK(m) (((m) & VKI_S_IFMT) == VKI_S_IFSOCK)
 #define VKI_S_ISWHT(m)  (((m) & VKI_S_IFMT) == VKI_S_IFWHT)
 
 #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
 
 
 //----------------------------------------------------------------------
 // From sys/dirent.h
 //----------------------------------------------------------------------
 
 struct vki_dirent {
    vki_uint32_t   d_fileno;
    vki_uint16_t   d_reclen;
    vki_uint8_t d_type;
    vki_uint8_t d_namelen;
    char     vki_d_name[256]; /* We must not include limits.h! */
 };
 
 //----------------------------------------------------------------------
 // From sys/fcntl.h
 //----------------------------------------------------------------------
 
 #define VKI_O_RDONLY   O_RDONLY
 #define VKI_O_WRONLY   O_WRONLY
 #define VKI_O_RDWR     O_RDWR
 
 #define VKI_FREAD FREAD
 #define VKI_WRITE WRITE
 
 #define VKI_O_NONBLOCK    O_NONBLOCK
 #define VKI_O_APPEND   O_APPEND
 #define VKI_O_CREAT    O_CREAT
 #define VKI_O_TRUNC    O_TRUNC
 #define VKI_O_EXCL     O_EXCL
 #define VKI_O_DIRECTORY O_DIRECTORY
 #define VKI_O_EXEC      O_EXEC
 #define VKI_O_SEARCH    O_EXEC
 
 #define VKI_AT_FDCWD            AT_FDCWD
 #define VKI_AT_SYMLINK_NOFOLLOW 0x0200
 
 
 #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 */
 #define VKI_F_SETOWN    5  /*  for sockets. */
 #define VKI_F_GETOWN    6  /*  for sockets. */
 #define VKI_F_OGETLK    7  /* get record locking information */
 #define VKI_F_OSETLK    8  /* set record locking information */
 #define VKI_F_OSETLKW   9  /* F_SETLK; wait if blocked */
 #define VKI_F_DUP2FD    10 /* duplicate file descriptor to arg */
 #define VKI_F_GETLK     11 /* get record locking information */
 #define VKI_F_SETLK     12 /* set record locking information */
 #define VKI_F_SETLKW    13 /* F_SETLK; wait if blocked */
 #define VKI_F_SETLK_REMOTE 14 /* debugging support for remote locks */
 #define VKI_F_READAHEAD    15 /* read ahead */
 #define VKI_F_RDAHEAD      16 /* Darwin compatible read ahead */
 #define VKI_F_DUPFD_CLOEXEC  17 /* dup close_on_exec */
 #define VKI_F_DUP2FD_CLOEXEC 18 /* Like F_DUP2FD, but FD_CLOEXEC is set */
 #define VKI_F_ADD_SEALS    19 /* apply seals to underlying file */
 #define VKI_F_GET_SEALS    20 /* get seals to underlying file */
 #define VKI_F_ISUNIONSTACK 21 /* kludge for libc (part of a union stack?) */
 /* FreeBSD 13.1 and later */
 #define VKI_F_KINFO        22 /* Return kinfo_file for this fd */
 
 /* for F_[GET|SET]FL */
 #define VKI_FD_CLOEXEC  1  /* actually anything with low bit set goes */
 
 /* for F_[ADD|GET]_SEALS */
 #define VKI_F_SEAL_SEAL    0x0001
 #define VKI_F_SEAL_SHRINK  0x0002
 #define VKI_F_SEAL_GROW    0x0004
 #define VKI_F_SEAL_WRITE   0x0008
 
 struct vki_spacectl_range {
    vki_off_t   r_offset;
    vki_off_t   r_len;
 };
 
 
 //----------------------------------------------------------------------
 // From sys/unistd.h
 //----------------------------------------------------------------------
 
 #define VKI_SEEK_SET              0
 #define VKI_SEEK_CUR              1
 #define VKI_SEEK_END              2
 
 #define VKI_F_OK  0       /* test for existence of file */
 #define VKI_X_OK  0x01    /* test for execute or search permission */
 #define VKI_W_OK  0x02    /* test for write permission */
 #define VKI_R_OK  0x04    /* test for read permission */
 
 #define VKI_RFSPAWN         (1U<<31U)
 
 /* kcmp() options. */
 #define VKI_KCMP_FILE       100
 #define VKI_KCMP_FILEOBJ    101
 #define VKI_KCMP_FILES      102
 #define VKI_KCMP_SIGHAND    103
 #define VKI_KCMP_VM         104
 
 #define VKI_CLOSE_RANGE_CLOEXEC     (1<<2)
 
 //----------------------------------------------------------------------
 // From sys/msg.h
 //----------------------------------------------------------------------
 
 #if 0 /* not in freebsd */
 #define VKI_MSGSND              11
 #define VKI_MSGRCV              12
 #define VKI_MSGGET              13
 #define VKI_MSGCTL              14
 #endif
 
 typedef unsigned long vki_msglen_t;
 typedef unsigned long vki_msgqnum_t;
 
 struct vki_msqid_ds_old {
    struct vki_ipc_perm_old msg_perm;
    struct vki_msg *msg_first;
    struct vki_msg *msg_last;
    vki_msglen_t msg_cbytes;
    vki_msgqnum_t msg_qnum;
    vki_msglen_t msg_qbytes;
    vki_pid_t   msg_lspid;
    vki_pid_t   msg_lrpid;
    vki_time_t  msg_stime;
    vki_uint32_t   msg_pad1;
    vki_time_t  msg_rtime;
    vki_uint32_t   msg_pad2;
    vki_time_t  msg_ctime;
    vki_uint32_t   msg_pad3;
    vki_uint32_t   msg_pad4[4];
 };
 
 struct vki_msqid_ds {
    struct vki_ipc_perm msg_perm;
    struct vki_msg *msg_first;
    struct vki_msg *msg_last;
    vki_msglen_t msg_cbytes;
    vki_msgqnum_t msg_qnum;
    vki_msglen_t msg_qbytes;
    vki_pid_t   msg_lspid;
    vki_pid_t   msg_lrpid;
    vki_time_t  msg_stime;
    vki_time_t  msg_rtime;
    vki_time_t  msg_ctime;
 };
 
 
 struct vki_msgbuf {
    long mtype;         /* type of message */
    char mtext[1];      /* message text */
 };
 
 
 //----------------------------------------------------------------------
 // From sys/shm.h
 //----------------------------------------------------------------------
 
 struct vki_shmid_ds_old {
    struct vki_ipc_perm_old shm_perm;   /* operation perms */
    int         shm_segsz;  /* size of segment (bytes) */
    vki_pid_t      shm_lpid;   /* pid of last operator */
    vki_pid_t      shm_cpid;   /* pid of creator */
    short       shm_nattch; /* no. of current attaches */
    vki_time_t     shm_atime;  /* last attach time */
    vki_time_t     shm_dtime;  /* last detach time */
    vki_time_t     shm_ctime;  /* last change time */
    void        *shm_internal; /* sysv stupidity */
 };
 
 
 struct vki_shmid_ds {
    struct vki_ipc_perm  shm_perm;   /* operation perms */
    vki_size_t     shm_segsz;  /* size of segment (bytes) */
    vki_pid_t      shm_lpid;   /* pid of last operator */
    vki_pid_t      shm_cpid;   /* pid of creator */
    int         shm_nattch; /* no. of current attaches */
    vki_time_t     shm_atime;  /* last attach time */
    vki_time_t     shm_dtime;  /* last detach time */
    vki_time_t     shm_ctime;  /* last change time */
 };
 
 #define VKI_SHMLBA  VKI_PAGE_SIZE
 #define VKI_SHM_RDONLY  010000  /* read-only access */
 #define  VKI_SHM_ANON   (1UL)
 
 #if 0 /* not in freebsd abi */
 #define VKI_SHMAT               21
 #define VKI_SHMDT               22
 #define VKI_SHMGET              23
 #define VKI_SHMCTL              24
 #endif
 
 //----------------------------------------------------------------------
 // From sys/ptrace.h
 //----------------------------------------------------------------------
 
 #define VKI_PTRACE_TRACEME         0
 #define VKI_PTRACE_READ_I     1
 #define VKI_PTRACE_READ_D     2
 /* 3 - read user struct */
 #define VKI_PTRACE_WRITE_I    4
 #define VKI_PTRACE_WRITE_D    5
 /* 6 - write user struct */
 #define VKI_PTRACE_CONTINUE      7
 #define VKI_PTRACE_KILL       8
 #define VKI_PTRACE_STEP       9
 #define VKI_PTRACE_ATTACH     10
 #define VKI_PTRACE_DETACH     11
 #define VKI_PTRACE_IO         12
 #define VKI_PTRACE_LWPINFO    13
 #define VKI_PTRACE_GETNUMLWPS    14
 #define VKI_PTRACE_GETLWPLIST    15
 #define VKI_PTRACE_CLEARSTEP     16
 #define VKI_PTRACE_SETSTEP    17
 #define VKI_PTRACE_SUSPEND    18
 #define VKI_PTRACE_RESUME     19
 #define VKI_PTRACE_TO_SCE     20
 #define VKI_PTRACE_TO_SCX     21
 #define VKI_PTRACE_SYSCALL    22
 /* md */
 #define VKI_PTRACE_GETREGS    33
 #define VKI_PTRACE_SETREGS    34
 #define VKI_PTRACE_GETFPREGS     35
 #define VKI_PTRACE_SETFPREGS     36
 #define VKI_PTRACE_GETDBREGS     37
 #define VKI_PTRACE_SETDBREGS     38
 
 #define  VKI_PTRACE_VM_TIMESTAMP    40
 #define  VKI_PTRACE_VM_ENTRY        41
 
 #define VKI_PTRACE_FIRSTMACH     64
 
 struct vki_ptrace_io_desc {
    int      piod_op;
    void *      piod_offs;
    void *      piod_addr;
    vki_size_t  piod_len;
 };
 #define VKI_PIOD_READ_D    1
 #define VKI_PIOD_WRITE_D   2
 #define VKI_PIOD_READ_I    3
 #define VKI_PIOD_WRITE_I   4
 
 struct vki_ptrace_lwpinfo {
    vki_lwpid_t pl_lwpid;
    int      pl_event;
 #define  VKI_PL_EVENT_NONE 0
 #define  VKI_PL_EVENT_SIGNAL  1
    int      pl_flags;
 #define VKI_FLAG_SA     0x01
 #define  VKI_FLAG_BOUND    0x02
    vki_sigset_t pl_sigmask;
    vki_sigset_t pl_siglist;
 };
 
 struct vki_ptrace_vm_entry {
    int      pve_entry;  /* Entry number used for iteration. */
    int      pve_timestamp; /* Generation number of VM map. */
    unsigned long  pve_start;  /* Start VA of range. */
    unsigned long  pve_end; /* End VA of range (incl). */
    unsigned long  pve_offset; /* Offset in backing object. */
    unsigned int   pve_prot;   /* Protection of memory range. */
    unsigned int   pve_pathlen;   /* Size of path. */
    long     pve_fileid; /* File ID. */
    vki_uint32_t   pve_fsid;   /* File system ID. */
    char     *pve_path;  /* Path name of object. */
 };
 
 #endif // __VKI_FREEBSD_H
 
 //----------------------------------------------------------------------
 // From x86/sysarch.h
 //----------------------------------------------------------------------
 
 // @todo PJF missing VKI_I386_VM86 VKI_I386_SET_PKRU VKI_I386_CLEAR_PKRU VKI_AMD64_SET_PKRU VKI_AMD64_CLEAR_PKRU
 #define VKI_I386_GET_FSBASE     7
 #define VKI_I386_SET_FSBASE     8
 #define VKI_I386_GET_GSBASE     9
 #define VKI_I386_SET_GSBASE     10
 #define VKI_I386_GET_XFPUSTATE  11
 
 #define VKI_AMD64_GET_FSBASE    128
 #define VKI_AMD64_SET_FSBASE    129
 #define VKI_AMD64_GET_GSBASE    130
 #define VKI_AMD64_SET_GSBASE    131
 #define VKI_AMD64_GET_XFPUSTATE  132
 
 //----------------------------------------------------------------------
 // From sys/module.h
 //----------------------------------------------------------------------
 
 #define VKI_MAXMODNAME 32
 
 typedef union vki_modspecific {
    vki_int32_t intval;
    vki_uint32_t   u_intval;
 #if defined(VGP_x86_freebsd)
    vki_int32_t longval;
    vki_uint32_t   u_longval;
 #elif defined(VGP_amd64_freebsd) || defined(VGP_arm64_freebsd)
    vki_int64_t longval;
    vki_uint64_t   u_longval;
 #else
 #error Unknown platform
 #endif
 } vki_modspecific_t;
 
 struct vki_module_stat {
    int   version;
    char  name[VKI_MAXMODNAME];
    int   refs;
    int   id;
    vki_modspecific_t data;
 };
 
 //----------------------------------------------------------------------
 // From sys/rtprio.h
 //----------------------------------------------------------------------
 
 struct vki_rtprio {
    vki_uint16_t   type;
    vki_uint16_t   prio;
 };
 
 #define VKI_RTP_LOOKUP  0
 #define VKI_RTP_SET  1
 
 //----------------------------------------------------------------------
 // From sys/umtx.h
 //----------------------------------------------------------------------
 
 struct vki_umtx {
    unsigned long  u_owner;
 };
 
 struct vki_umutex {
    vki_lwpid_t m_owner;
    vki_uint32_t   m_flags;
    vki_uint32_t   m_ceilings[2];
    vki_uint32_t   m_spare[4];
 };
 
 struct vki_ucond {
    vki_uint32_t   c_has_waiters;
    vki_uint32_t   c_flags;
    vki_uint32_t   c_spare[2];
 };
 
 struct vki_urwlock {
    vki_uint32_t   rw_state;
    vki_uint32_t   rw_flags;
    vki_uint32_t   rw_blocked_readers;
    vki_uint32_t   rw_blocked_writers;
    vki_uint32_t   rw_spare[4];
 };
 
 struct vki_usem {
    vki_uint32_t   has_waiters;
    vki_uint32_t   count;
    vki_uint32_t   flags;
 };
 
 struct vki_umtx_time {
    struct vki_timespec  timeout;
    vki_uint32_t      flags;
    vki_uint32_t      clockid;
 };
 
 struct vki_usem2 {
    vki_uint32_t    count;
    vki_uint32_t  flags;
 };
 
 struct vki_umtx_robust_lists_params {
    vki_uintptr_t robust_list_offset;
    vki_uintptr_t robust_priv_list_offset;
    vki_uintptr_t robust_inact_offset;
 };
 
 #define VKI_UMTX_OP_LOCK     0
 #define VKI_UMTX_OP_UNLOCK      1
 #define VKI_UMTX_OP_WAIT     2
 #define VKI_UMTX_OP_WAKE     3
 #define VKI_UMTX_OP_MUTEX_TRYLOCK  4
 #define VKI_UMTX_OP_MUTEX_LOCK     5
 #define VKI_UMTX_OP_MUTEX_UNLOCK   6
 #define VKI_UMTX_OP_SET_CEILING    7
 #define VKI_UMTX_OP_CV_WAIT     8
 #define VKI_UMTX_OP_CV_SIGNAL      9
 #define VKI_UMTX_OP_CV_BROADCAST   10
 #define VKI_UMTX_OP_WAIT_UINT      11
 #define VKI_UMTX_OP_RW_RDLOCK      12
 #define VKI_UMTX_OP_RW_WRLOCK      13
 #define VKI_UMTX_OP_RW_UNLOCK      14
 #define VKI_UMTX_OP_WAIT_UINT_PRIVATE 15
 #define VKI_UMTX_OP_WAKE_PRIVATE   16
 #define VKI_UMTX_OP_MUTEX_WAIT     17
 #define VKI_UMTX_OP_MUTEX_WAKE     18 /* deprecated */
 #define VKI_UMTX_OP_SEM_WAIT    19
 #define VKI_UMTX_OP_SEM_WAKE    20
 #define VKI_UMTX_OP_NWAKE_PRIVATE  21
 #define VKI_UMTX_OP_MUTEX_WAKE2    22
 #define VKI_UMTX_OP_SEM2_WAIT       23
 #define VKI_UMTX_OP_SEM2_WAKE       24
 #define VKI_UMTX_OP_SHM             25
 #define VKI_UMTX_OP_ROBUST_LISTS    26
 #define VKI_UMTX_OP_GET_MIN_TIMEOUT 27
 #define VKI_UMTX_OP_SET_MIN_TIMEOUT 28
 
 #define VKI_UMTX_SHM_CREAT          0x0001
 
 //----------------------------------------------------------------------
 // From sys/acl.h
 //----------------------------------------------------------------------
 
 struct vki_acl_entry {
    int      ae_tag;
    vki_uid_t   ae_uid;
    vki_mode_t  ae_perm;
 };
 
 #define VKI_ACL_MAX_ENTRIES 32
 struct vki_acl {
    int      acl_cnt;
    struct vki_acl_entry acl_entry[VKI_ACL_MAX_ENTRIES];
 };
 
 
 //----------------------------------------------------------------------
 // From sys/uuid.h
 //----------------------------------------------------------------------
 
 struct vki_uuid {
    vki_uint32_t   time_low;
    vki_uint16_t   time_mid;
    vki_uint16_t   time_hi_and_version;
    vki_uint8_t clock_seq_hi_and_reserved;
    vki_uint8_t clock_seq_low;
    vki_uint8_t node[6];
 };
 
 //----------------------------------------------------------------------
 // sys/_sockaddr_storage.h
 //----------------------------------------------------------------------
 
 #define VKI__SS_MAXSIZE     128U
 #define VKI__SS_ALIGNSIZE   (sizeof(__int64_t))
 #define VKI__SS_PAD1SIZE    (VKI__SS_ALIGNSIZE - sizeof(unsigned char) - \
                             sizeof(vki_sa_family_t))
 #define VKI__SS_PAD2SIZE    (VKI__SS_MAXSIZE - sizeof(unsigned char) - \
                             sizeof(vki_sa_family_t) - VKI__SS_PAD1SIZE - VKI__SS_ALIGNSIZE)
 
 struct vki_sockaddr_storage {
         unsigned char   vki_ss_len;         /* address length */
         vki_sa_family_t     vki_ss_family;      /* address family */
         char            vki___ss_pad1[VKI__SS_PAD1SIZE];
         __int64_t       vki___ss_align;     /* force desired struct alignment */
         char            vki___ss_pad2VKI_[VKI__SS_PAD2SIZE];
 };
 
 //----------------------------------------------------------------------
 // From sys/captrights.h
 //----------------------------------------------------------------------
 
 #define VKI_CAP_RIGHTS_VERSION_00   0
 #define VKI_CAP_RIGHTS_VERSION      VKI_CAP_RIGHTS_VERSION_00
 
 struct vki_cap_rights {
         vki_uint64_t        cki_cr_rights[VKI_CAP_RIGHTS_VERSION + 2];
 };
 
 typedef struct vki_cap_rights       vki_cap_rights_t;
 
 
 //----------------------------------------------------------------------
 // From sys/user.h
 //----------------------------------------------------------------------
 
 #define VKI_KVME_TYPE_NONE          0
 #define VKI_KVME_TYPE_DEFAULT       1
 #define VKI_KVME_TYPE_VNODE         2
 #define VKI_KVME_TYPE_SWAP          3
 #define VKI_KVME_TYPE_DEVICE        4
 #define VKI_KVME_TYPE_PHYS          5
 #define VKI_KVME_TYPE_DEAD          6
 #define VKI_KVME_TYPE_MGTDEVICE     8
 #define VKI_KVME_TYPE_GUARD         9
 #define VKI_KVME_TYPE_UNKNOWN       255
 
 #define VKI_KVME_PROT_READ          0x00000001
 #define VKI_KVME_PROT_WRITE         0x00000002
 #define VKI_KVME_PROT_EXEC          0x00000004
 
 #define VKI_KVME_FLAG_COW           0x00000001
 #define VKI_KVME_FLAG_NEEDS_COPY    0x00000002
 #define VKI_KVME_FLAG_NOCOREDUMP    0x00000004
 #define VKI_KVME_FLAG_SUPER         0x00000008
 #define VKI_KVME_FLAG_GROWS_UP      0x00000010
 #define VKI_KVME_FLAG_GROWS_DOWN    0x00000020
 #define VKI_KVME_FLAG_USER_WIRED    0x00000040
 
 struct vki_kinfo_vmentry {
    int   kve_structsize;
    int   kve_type;
    ULong kve_start;
    ULong kve_end;
    ULong   kve_offset;
    ULong   kve_fileid;
    UInt    kve_vn_fsid_freebsd11;
    int   kve_flags;
    int   kve_resident;
    int   kve_private_resident;
    int   kve_protection;
    int   kve_ref_count;
    int   kve_shadow_count;
    int      kve_vn_type;
    ULong kve_vn_size;
    UInt kve_vn_rdev_freebsd11;
    UShort kve_vn_mode;
    UShort kve_status;
    ULong kve_vn_fsid;
    ULong kve_vn_rdev;
    int      _kve_ispare[8];
    char  kve_path[VKI_PATH_MAX];
 };
 
 #define VKI_KINFO_FILE_SIZE 1392
 
 struct vki_kinfo_file {
    int      vki_kf_structsize;      /* Variable size of record. */
    int      vki_kf_type;        /* Descriptor type. */
    int      vki_kf_fd;          /* Array index. */
    int      vki_kf_ref_count;       /* Reference count. */
    int      vki_kf_flags;       /* Flags. */
    int      vki_kf_pad0;        /* Round to 64 bit alignment. */
    Off64T   vki_kf_offset;      /* Seek location. */
    union {
       struct {
          /* API compatiblity with FreeBSD < 12. */
          int        vki_kf_vnode_type;
          int        vki_kf_sock_domain;
          int        vki_kf_sock_type;
          int        kf_sock_protocol;
          struct vki_sockaddr_storage vki_kf_sa_local;
          struct vki_sockaddr_storage    vki_kf_sa_peer;
       };
       union {
          struct {
             /* Sendq size */
             vki_uint32_t    vki_kf_sock_sendq;
             /* Socket domain. */
             int     vki_kf_sock_domain0;
             /* Socket type. */
             int     vki_kf_sock_type0;
             /* Socket protocol. */
             int     vki_kf_sock_protocol0;
             /* Socket address. */
             struct vki_sockaddr_storage vki_kf_sa_local;
             /* Peer address. */
             struct vki_sockaddr_storage vki_kf_sa_peer;
             /* Address of so_pcb. */
             vki_uint64_t    vki_kf_sock_pcb;
             /* Address of inp_ppcb. */
             vki_uint64_t    vki_kf_sock_inpcb;
             /* Address of unp_conn. */
             vki_uint64_t    vki_kf_sock_unpconn;
             /* Send buffer state. */
             vki_uint16_t    vki_kf_sock_snd_sb_state;
             /* Receive buffer state. */
             vki_uint16_t    vki_kf_sock_rcv_sb_state;
             /* Recvq size. */
             vki_uint32_t    vki_kf_sock_recvq;
          } vki_kf_sock;
          struct {
             /* Vnode type. */
             int     vki_kf_file_type;
             /* Space for future use */
             int     vki_kf_spareint[3];
             vki_uint64_t    vki_kf_spareint64[30];
             /* Vnode filesystem id. */
             vki_uint64_t    vki_kf_file_fsid;
             /* File device. */
             vki_uint64_t    vki_kf_file_rdev;
             /* Global file id. */
             vki_uint64_t    vki_kf_file_fileid;
             /* File size. */
             vki_uint64_t    vki_kf_file_size;
             /* Vnode filesystem id, FreeBSD 11 compat. */
             vki_uint32_t    vki_kf_file_fsid_freebsd11;
             /* File device, FreeBSD 11 compat. */
             vki_uint32_t    kf_file_rdev_freebsd11;
             /* File mode. */
             vki_uint16_t    vki_kf_file_mode;
             /* Round to 64 bit alignment. */
             vki_uint16_t    vki_kf_file_pad0;
             vki_uint32_t    kf_file_pad1;
          } kf_file;
          struct {
             vki_uint32_t    vki_kf_spareint[4];
             vki_uint64_t    vki_kf_spareint64[32];
             vki_uint32_t    vki_kf_sem_value;
             vki_uint16_t    vki_kf_sem_mode;
          } kf_sem;
          struct {
             vki_uint32_t    vki_kf_spareint[4];
             vki_uint64_t    vki_kf_spareint64[32];
             vki_uint64_t    vki_kf_pipe_addr;
             vki_uint64_t    vki_kf_pipe_peer;
             vki_uint32_t    vki_kf_pipe_buffer_cnt;
             /* Round to 64 bit alignment. */
             vki_uint32_t    vki_kf_pipe_pad0[3];
          } kf_pipe;
          struct {
             vki_uint32_t    vki_kf_spareint[4];
             vki_uint64_t    vki_kf_spareint64[32];
             vki_uint32_t    vki_kf_pts_dev_freebsd11;
             vki_uint32_t    vki_kf_pts_pad0;
             vki_uint64_t    vki_kf_pts_dev;
             /* Round to 64 bit alignment. */
             vki_uint32_t    vki_kf_pts_pad1[4];
          } kf_pts;
          struct {
             vki_uint32_t    vki_kf_spareint[4];
             vki_uint64_t    vki_kf_spareint64[32];
             vki_pid_t       vki_kf_pid;
          } vki_kf_proc;
          struct {
             vki_uint64_t    vki_kf_eventfd_value;
             vki_uint32_t    vki_kf_eventfd_flags;
          } vki_kf_eventfd;
       } vki_kf_un;
    };
    vki_uint16_t vki_kf_status;      /* Status flags. */
    vki_uint16_t vki_kf_pad1;        /* Round to 32 bit alignment. */
    int      vki__kf_ispare0;        /* Space for more stuff. */
    vki_cap_rights_t vki_kf_cap_rights;      /* Capability rights. */
    vki_uint64_t vki__kf_cap_spare;      /* Space for future cap_rights_t. */
    /* Truncated before copyout in sysctl */
    char     vki_kf_path[VKI_PATH_MAX];  /* Path to file, if any. */
 };
 
 //----------------------------------------------------------------------
 // From sys/kenv.h
 //----------------------------------------------------------------------
 #define VKI_KENV_GET    0
 #define VKI_KENV_SET    1
 #define VKI_KENV_UNSET     2
 #define VKI_KENV_DUMP      3
 
 //----------------------------------------------------------------------
 // From sys/sysctl.h (and related)
 //----------------------------------------------------------------------
 
 #include <sys/sysctl.h>
 
 #define VKI_CTL_KERN         CTL_KERN
 #define VKI_CTL_HW           CTL_HW
 #define VKI_KERN_PROC        KERN_PROC
 #define VKI_KERN_PROC_VMMAP  KERN_PROC_VMMAP
 #define VKI_KERN_PROC_FILEDESC KERN_PROC_FILEDESC
 #define VKI_HW_MACHINE       HW_MACHINE
 
 //----------------------------------------------------------------------
 // From sys/thr.h
 //----------------------------------------------------------------------
 
 struct vki_thr_param {
    void  (*start_func)(void *);
    void  *arg;
    char  *stack_base;
    vki_size_t  stack_size;
    char  *tls_base;
    vki_size_t  tls_size;
    long  *child_tid;
    long  *parent_tid;
    int   flags;
    struct vki_rtprio *rtp;
    void  *spare[3];
 };
 
 //----------------------------------------------------------------------
 // From sys/linker.h
 //----------------------------------------------------------------------
 
 struct vki_kld_file_stat {
    int         version;        /* set to sizeof(struct kld_file_stat) */
    char        name[MAXPATHLEN];
    int         refs;
    int         id;
    vki_caddr_t     address;        /* load address */
    vki_size_t      size;           /* size in bytes */
    char        pathname[MAXPATHLEN];
 };
 
 
 struct vki_kld_sym_lookup {
    int         version;        /* set to sizeof(struct kld_sym_lookup) */
    char        *symname;       /* Symbol name we are looking up */
    unsigned long symvalue;
    vki_size_t  symsize;
 };
 
 #if !defined(VKI_INIT_ARCH_ELF_STATE)
 /* This structure is used to preserve architecture specific data during
    the loading of an ELF file, throughout the checking of architecture
    specific ELF headers & through to the point where the ELF load is
    known to be proceeding. This implementation is a dummy for
    architectures which require no specific state. */
 struct vki_arch_elf_state {
 };
 
 #  define VKI_INIT_ARCH_ELF_STATE { }
 
 #endif
 
 //----------------------------------------------------------------------
 // From ufs/ufs/quota.h
 //----------------------------------------------------------------------
 
 #define VKI_Q_QUOTAON       0x0100
 #define VKI_Q_QUOTAOFF      0x0200
 #define VKI_Q_GETQUOTA32    0x0300
 #define VKI_Q_SETQUOTA32    0x0400
 #define VKI_Q_SETUSE32      0x0500
 #define VKI_Q_SYNC          0x0600
 #define VKI_Q_GETQUOTA      0x0700
 #define VKI_Q_SETQUOTA      0x0800
 #define VKI_Q_SETUSE        0x0900
 #define VKI_Q_GETQUOTASIZE  0x0A00
 
 //----------------------------------------------------------------------
 // From sys/_bitset.h
 //----------------------------------------------------------------------
 
 #define  VKI_BITSET_BITS      (sizeof(long) * 8)
 
 #define  vki__howmany(x, y)   (((x) + ((y) - 1)) / (y))
 
 #define  vki__bitset_words(_s)   (vki__howmany(_s, VKI_BITSET_BITS))
 
 #define  VKI_BITSET_DEFINE(t, _s)                  \
 struct t {                       \
         long    __bits[vki__bitset_words((_s))];            \
 }
 
 //----------------------------------------------------------------------
 // From sys/_domainset.h
 //----------------------------------------------------------------------
 
 #define  VKI_DOMAINSET_MAXSIZE   256
 
 #ifndef  VKI_DOMAINSET_SETSIZE
 #define  VKI_DOMAINSET_SETSIZE   VKI_DOMAINSET_MAXSIZE
 #endif
 
 VKI_BITSET_DEFINE(vki_domainset, VKI_DOMAINSET_SETSIZE);
 
 typedef struct vki_domainset vki_domainset_t;
 
 //----------------------------------------------------------------------
 // From sys/procctl.h
 //----------------------------------------------------------------------
 
 #define VKI_PROC_SPROTECT           1
 #define VKI_PROC_REAP_ACQUIRE       2
 #define VKI_PROC_REAP_RELEASE       3
 #define VKI_PROC_REAP_STATUS        4
 #define VKI_PROC_REAP_GETPIDS       5
 #define VKI_PROC_REAP_KILL          6
 #define VKI_PROC_TRACE_CTL          7
 #define VKI_PROC_TRACE_STATUS       8
 #define VKI_PROC_TRAPCAP_CTL        9
 #define VKI_PROC_TRAPCAP_STATUS     10
 #define VKI_PROC_PDEATHSIG_CTL      11
 #define VKI_PROC_PDEATHSIG_STATUS   12
 #define VKI_PROC_ASLR_CTL           13
 #define VKI_PROC_ASLR_STATUS        14
 #define VKI_PROC_STACKGAP_CTL       17
 #define VKI_PROC_STACKGAP_STATUS    18
 #define VKI_PROC_NO_NEW_PRIVS_CTL   19
 #define VKI_PROC_NO_NEW_PRIVS_STATUS 20
 #define VKI_PROC_WXMAP_CTL          21
 #define VKI_PROC_WXMAP_STATUS       22
 
 struct vki_procctl_reaper_status {
    vki_u_int   rs_flags;
    vki_u_int   rs_children;
    vki_u_int   rs_descendants;
    vki_pid_t   rs_reaper;
    vki_pid_t   rs_pid;
    vki_u_int   rs_pad0[15];
 };
 
 struct vki_procctl_reaper_pidinfo;
 
 struct vki_procctl_reaper_pids {
    vki_u_int   rp_count;
    vki_u_int   rp_pad0[15];
    struct vki_procctl_reaper_pidinfo *rp_pids;
 };
 
 struct vki_procctl_reaper_kill {
    int     rk_sig;
    vki_u_int   rk_flags;
    vki_pid_t   rk_subtree;
    vki_u_int   rk_killed;
    vki_pid_t   rk_fpid;
    vki_u_int   rk_pad0[15];
 };
 
 //----------------------------------------------------------------------
 // From sys/jail.h
 //----------------------------------------------------------------------
 
 struct vki_jail {
    uint32_t        version;
    char            *path;
    char            *hostname;
    char            *jailname;
    uint32_t        ip4s;
    uint32_t        ip6s;
    struct in_addr  *ip4;
    struct in6_addr *ip6;
 };
 
 //----------------------------------------------------------------------
 // From sys/exec.h
 //----------------------------------------------------------------------
 
 struct vki_ps_strings {
    char** ps_argvstr;
    unsigned int ps_nargvstr;
 
    char** ps_envstr;
    unsigned int ps_nenvstr;
 };
 
 //----------------------------------------------------------------------
 // From sys/elf_common.h
 //----------------------------------------------------------------------
 
 #define VKI_AT_NULL 0
 #define VKI_AT_IGNORE 1
 #define VKI_AT_EXECFD 2
 #define VKI_AT_PHDR 3
 #define VKI_AT_PHENT 4
 #define VKI_AT_PHNUM 5
 #define VKI_AT_PAGESZ 6
 #define VKI_AT_BASE 7
 #define VKI_AT_FLAGS 8
 #define VKI_AT_ENTRY 9
 #define VKI_AT_NOTELF 10
 #define VKI_AT_UID 11
 #define VKI_AT_EUID 12
 #define VKI_AT_GID 13
 #define VKI_AT_EGID 14
 #define VKI_AT_EXECPATH 15
 #define VKI_AT_CANARY 16
 #define VKI_AT_CANARYLEN 17
 #define VKI_AT_OSRELDATE 18
 #define VKI_AT_NCPUS    19
 #define VKI_AT_PAGESIZES 20
 #define VKI_AT_PAGESIZESLEN 21
 #define VKI_AT_TIMEKEEP 22
 #define VKI_AT_STACKPROT 23
 #define VKI_AT_EHDRFLAGS 24
 #define VKI_AT_HWCAP 25
 #define VKI_AT_HWCAP2 26
 /* added in FreeBSD 13 */
 #define VKI_AT_BSDFLAGS 27
 #define VKI_AT_ARGC 28
 #define VKI_AT_ARGV 29
 #define VKI_AT_ENVC 30
 #define VKI_AT_ENVV 31
 #define VKI_AT_PS_STRINGS 32
 /* added in FreeBSD 13.1 */
 #define VKI_AT_FXRNG    33
 #define VKI_AT_KPRELOAD 34
 /* added in FreeBSD 14 */
 #define VKI_AT_USRSTACKBASE 35
 #define VKI_AT_USRSTACKLIM 36
 
 /* AT_COUNT depends on the FreeBSD version, not currently used */
 
 
 #define VKI_NT_FREEBSD_ABI_TAG 1
 #define VKI_NT_FREEBSD_FEATURE_CTL 4
 #define VKI_NT_FREEBSD_FCTL_STKGAP_DISABLE 0x00000004
 #define VKI_NT_FREEBSD_FCTL_WXNEEDED 0x00000008
 
 
 /*
  * PJF this is a bit messy
  *
  * mode_t is uint16_t
  * No problem on x86/amd64
  * On arm64 there are syscalls that take mode_t but that doesn't
  * work with memcheck validation - arm64 doesn't have any 16bit
  * registers.
  *
  * I can't just change mode_t to be 32bit. that will mess up
  * the 'stat' structures in this file.
  *
  * Instead I'll just do what the compiler does, and promote
  * it to 32bits.
  *
  * In the kernel, the syscall interface just pushes all
  * possible syscall args onto the stack and then
  * memcpy's them into an array of register sized args.
  * There's a struct defined for each syscall's arguments
  * that uses padding to type pun the values back to
  * the type passed in from userland. The structs are
  * generated from the syscall table.
  *
  * vki_mode_t is only used in syswrap files so there shouldn't
  * be any other side effects.
  */
 
 #if defined(VGP_arm64_freebsd)
 #define vki_mode_t vki_int32_t
 #endif
 
 //----------------------------------------------------------------------
 // From sys/pciio.h
 //----------------------------------------------------------------------
 
 typedef unsigned long vki_u_long;
 typedef unsigned int vki_u_int;
 #define VKI_PCI_MAXNAMELEN  16
 
 typedef enum {
    VKI_PCI_GETCONF_LAST_DEVICE,
    VKI_PCI_GETCONF_LIST_CHANGED,
    VKI_PCI_GETCONF_MORE_DEVS,
    VKI_PCI_GETCONF_ERROR
 } vki_pci_getconf_status;
 
 typedef enum {
    VKI_PCI_GETCONF_NO_MATCH            = 0x0000,
    VKI_PCI_GETCONF_MATCH_DOMAIN        = 0x0001,
    VKI_PCI_GETCONF_MATCH_BUS           = 0x0002,
    VKI_PCI_GETCONF_MATCH_DEV           = 0x0004,
    VKI_PCI_GETCONF_MATCH_FUNC          = 0x0008,
    VKI_PCI_GETCONF_MATCH_NAME          = 0x0010,
    VKI_PCI_GETCONF_MATCH_UNIT          = 0x0020,
    VKI_PCI_GETCONF_MATCH_VENDOR        = 0x0040,
    VKI_PCI_GETCONF_MATCH_DEVICE        = 0x0080,
    VKI_PCI_GETCONF_MATCH_CLASS         = 0x0100
 } vki_pci_getconf_flags;
 
 struct vki_pcisel {
    vki_uint32_t   pc_domain;      /* domain number */
    vki_uint8_t    pc_bus;         /* bus number */
    vki_uint8_t    pc_dev;         /* device on this bus */
    vki_uint8_t    pc_func;        /* function on this device */
 };
 
 struct vki_pci_conf {
    struct vki_pcisel   pc_sel;         /* domain+bus+slot+function */
    vki_uint8_t    pc_hdr;         /* PCI header type */
    vki_uint16_t   pc_subvendor;   /* card vendor ID */
    vki_uint16_t   pc_subdevice;   /* card device ID, assigned by
                                            card vendor */
    vki_uint16_t   pc_vendor;      /* chip vendor ID */
    vki_uint16_t   pc_device;      /* chip device ID, assigned by
                                            chip vendor */
    vki_uint8_t    pc_class;       /* chip PCI class */
    vki_uint8_t    pc_subclass;    /* chip PCI subclass */
    vki_uint8_t    pc_progif;      /* chip PCI programming interface */
    vki_uint8_t    pc_revid;       /* chip revision ID */
    char        pd_name[VKI_PCI_MAXNAMELEN + 1];  /* device name */
    vki_u_long     pd_unit;        /* device unit number */
 };
 
 struct vki_pci_match_conf {
    struct vki_pcisel       pc_sel;         /* domain+bus+slot+function */
    char                pd_name[VKI_PCI_MAXNAMELEN + 1];  /* device name */
    vki_u_long             pd_unit;        /* Unit number */
    vki_uint16_t           pc_vendor;      /* PCI Vendor ID */
    vki_uint16_t           pc_device;      /* PCI Device ID */
    vki_uint8_t            pc_class;       /* PCI class */
    vki_pci_getconf_flags   flags;          /* Matching expression */
 };
 
 struct vki_pci_conf_io {
    vki_uint32_t           pat_buf_len;    /* pattern buffer length */
    vki_uint32_t           num_patterns;   /* number of patterns */
    struct vki_pci_match_conf   *patterns;      /* pattern buffer */
    vki_uint32_t           match_buf_len;  /* match buffer length */
    vki_uint32_t           num_matches;    /* number of matches returned */
    struct vki_pci_conf     *matches;       /* match buffer */
    vki_uint32_t           offset;         /* offset into device list */
    vki_uint32_t           generation;     /* device list generation */
    vki_pci_getconf_status  status;         /* request status */
 };
 
 #define VKI_PCIOCGETCONF    _VKI_IOWR('p', 5, struct vki_pci_conf_io)
 
 //----------------------------------------------------------------------
 // From cam/cam.h
 //----------------------------------------------------------------------
 
 #define VKI_CAM_MAX_CDBLEN 16
 
 typedef unsigned int vki_path_id_t;
 typedef unsigned int vki_target_id_t;
 typedef unsigned int vki_lun_id_t;
 
 typedef struct {
    vki_uint32_t priority;
    vki_uint32_t generation;
    int       index;
 } vki_cam_pinfo;
 
 
 //----------------------------------------------------------------------
 // From sys/ata.h
 //----------------------------------------------------------------------
 
 struct vki_ata_params {
    /*000*/ vki_u_int16_t   config;         /* configuration info */
    /*001*/ vki_u_int16_t   cylinders;              /* # of cylinders */
    /*002*/ vki_u_int16_t   specconf;               /* specific configuration */
    /*003*/ vki_u_int16_t   heads;                  /* # heads */
    vki_u_int16_t   obsolete4;
    vki_u_int16_t   obsolete5;
    /*006*/ vki_u_int16_t   sectors;                /* # sectors/track */
    /*007*/ vki_u_int16_t   vendor7[3];
    /*010*/ vki_u_int8_t    serial[20];             /* serial number */
    /*020*/ vki_u_int16_t   retired20;
    vki_u_int16_t   retired21;
    vki_u_int16_t   obsolete22;
    /*023*/ vki_u_int8_t    revision[8];            /* firmware revision */
    /*027*/ vki_u_int8_t    model[40];              /* model name */
    /*047*/ vki_u_int16_t   sectors_intr;           /* sectors per interrupt */
    /*048*/ vki_u_int16_t   usedmovsd;              /* double word read/write? */
    /*049*/ vki_u_int16_t   capabilities1;
    /*050*/ vki_u_int16_t   capabilities2;
    /*051*/ vki_u_int16_t   retired_piomode;        /* PIO modes 0-2 */
    /*052*/ vki_u_int16_t   retired_dmamode;        /* DMA modes */
    /*053*/ vki_u_int16_t   atavalid;               /* fields valid */
    /*054*/ vki_u_int16_t   current_cylinders;
    /*055*/ vki_u_int16_t   current_heads;
    /*056*/ vki_u_int16_t   current_sectors;
    /*057*/ vki_u_int16_t   current_size_1;
    /*058*/ vki_u_int16_t   current_size_2;
    /*059*/ vki_u_int16_t   multi;
    /*060*/ vki_u_int16_t   lba_size_1;
    vki_u_int16_t   lba_size_2;
    vki_u_int16_t   obsolete62;
    /*063*/ vki_u_int16_t   mwdmamodes;             /* multiword DMA modes */
    /*064*/ vki_u_int16_t   apiomodes;              /* advanced PIO modes */
 
    /*065*/ vki_u_int16_t   mwdmamin;               /* min. M/W DMA time/word ns */
    /*066*/ vki_u_int16_t   mwdmarec;               /* rec. M/W DMA time ns */
    /*067*/ vki_u_int16_t   pioblind;               /* min. PIO cycle w/o flow */
    /*068*/ vki_u_int16_t   pioiordy;               /* min. PIO cycle IORDY flow */
    /*069*/ vki_u_int16_t   support3;
    vki_u_int16_t   reserved70;
    /*071*/ vki_u_int16_t   rlsovlap;               /* rel time (us) for overlap */
    /*072*/ vki_u_int16_t   rlsservice;             /* rel time (us) for service */
    vki_u_int16_t   reserved73;
    vki_u_int16_t   reserved74;
    /*075*/ vki_u_int16_t   queue;
    /*76*/  vki_u_int16_t   satacapabilities;
    /*77*/  vki_u_int16_t   satacapabilities2;
    /*78*/  vki_u_int16_t   satasupport;
    /*79*/  vki_u_int16_t   sataenabled;
    /*080*/ vki_u_int16_t   version_major;
    /*081*/ vki_u_int16_t   version_minor;
 
    struct {
       /*082/085*/ vki_u_int16_t   command1;
       /*083/086*/ vki_u_int16_t   command2;
       /*084/087*/ vki_u_int16_t   extension;
    } __packed support, enabled;
 
    /*088*/ vki_u_int16_t   udmamodes;              /* UltraDMA modes */
    /*089*/ vki_u_int16_t   erase_time;
    /*090*/ vki_u_int16_t   enhanced_erase_time;
    /*091*/ vki_u_int16_t   apm_value;
    /*092*/ vki_u_int16_t   master_passwd_revision;
    /*093*/ vki_u_int16_t   hwres;
    /*094*/ vki_u_int16_t   acoustic;
    /*095*/ vki_u_int16_t   stream_min_req_size;
    /*096*/ vki_u_int16_t   stream_transfer_time;
    /*097*/ vki_u_int16_t   stream_access_latency;
    /*098*/ vki_u_int32_t   stream_granularity;
    /*100*/ vki_u_int16_t   lba_size48_1;
    vki_u_int16_t   lba_size48_2;
    vki_u_int16_t   lba_size48_3;
    vki_u_int16_t   lba_size48_4;
    vki_u_int16_t   reserved104;
    /*105*/ vki_u_int16_t   max_dsm_blocks;
    /*106*/ vki_u_int16_t   pss;
    /*107*/ vki_u_int16_t   isd;
    /*108*/ vki_u_int16_t   wwn[4];
    vki_u_int16_t   reserved112[5];
    /*117*/ vki_u_int16_t   lss_1;
    /*118*/ vki_u_int16_t   lss_2;
    /*119*/ vki_u_int16_t   support2;
    /*120*/ vki_u_int16_t   enabled2;
    vki_u_int16_t   reserved121[6];
    /*127*/ vki_u_int16_t   removable_status;
    /*128*/ vki_u_int16_t   security_status;
    vki_u_int16_t   reserved129[31];
    /*160*/ vki_u_int16_t   cfa_powermode1;
    vki_u_int16_t   reserved161;
    /*162*/ vki_u_int16_t   cfa_kms_support;
    /*163*/ vki_u_int16_t   cfa_trueide_modes;
    /*164*/ vki_u_int16_t   cfa_memory_modes;
    vki_u_int16_t   reserved165[4];
    /*169*/ vki_u_int16_t   support_dsm;
    vki_u_int16_t   reserved170[6];
    /*176*/ vki_u_int8_t    media_serial[60];
    /*206*/ vki_u_int16_t   sct;
    vki_u_int16_t   reserved206[2];
    /*209*/ vki_u_int16_t   lsalign;
    /*210*/ vki_u_int16_t   wrv_sectors_m3_1;
    vki_u_int16_t   wrv_sectors_m3_2;
    /*212*/ vki_u_int16_t   wrv_sectors_m2_1;
    vki_u_int16_t   wrv_sectors_m2_2;
    /*214*/ vki_u_int16_t   nv_cache_caps;
    /*215*/ vki_u_int16_t   nv_cache_size_1;
    vki_u_int16_t   nv_cache_size_2;
    /*217*/ vki_u_int16_t   media_rotation_rate;
    vki_u_int16_t   reserved218;
    /*219*/ vki_u_int16_t   nv_cache_opt;
    /*220*/ vki_u_int16_t   wrv_mode;
    vki_u_int16_t   reserved221;
    /*222*/ vki_u_int16_t   transport_major;
    /*223*/ vki_u_int16_t   transport_minor;
    vki_u_int16_t   reserved224[31];
    /*255*/ vki_u_int16_t   integrity;
 } __packed;
 
 //----------------------------------------------------------------------
 // From sys/callout.h
 //----------------------------------------------------------------------
 
 struct vki_callout_handle {
    struct vki_callout *callout;
 };
 
 
 //----------------------------------------------------------------------
 // From cam/scsi/scsi_all.h
 //----------------------------------------------------------------------
 
 struct vki_scsi_sense_data {
    vki_u_int8_t error_code;
    vki_u_int8_t segment;
    vki_u_int8_t flags;
    vki_u_int8_t info[4];
    vki_u_int8_t extra_len;
    vki_u_int8_t cmd_spec_info[4];
    vki_u_int8_t add_sense_code;
    vki_u_int8_t add_sense_code_qual;
    vki_u_int8_t fru;
    vki_u_int8_t sense_key_spec[3];
    vki_u_int8_t extra_bytes[14];
 #define VKI_SSD_FULL_SIZE sizeof(struct vki_scsi_sense_data)
 };
 
 struct vki_scsi_inquiry_data {
    vki_uint8_t device;
    vki_uint8_t dev_qual2;
    vki_uint8_t version;
    vki_uint8_t response_format;
    vki_uint8_t additional_length;
    vki_uint8_t spc3_flags;
    vki_uint8_t spc2_flags;
    vki_uint8_t flags;
 #define VKI_SID_VENDOR_SIZE   8
    char     vendor[VKI_SID_VENDOR_SIZE];
 #define VKI_SID_PRODUCT_SIZE  16
    char     product[VKI_SID_PRODUCT_SIZE];
 #define VKI_SID_REVISION_SIZE 4
    char     revision[VKI_SID_REVISION_SIZE];
 #define VKI_SID_VENDOR_SPECIFIC_0_SIZE      20
    vki_uint8_t vendor_specific0[VKI_SID_VENDOR_SPECIFIC_0_SIZE];
    vki_uint8_t spi3data;
    vki_uint8_t reserved2;
    /*
     * Version Descriptors, stored 2 byte values.
     */
    vki_uint8_t version1[2];
    vki_uint8_t version2[2];
    vki_uint8_t version3[2];
    vki_uint8_t version4[2];
    vki_uint8_t version5[2];
    vki_uint8_t version6[2];
    vki_uint8_t version7[2];
    vki_uint8_t version8[2];
 
    vki_uint8_t reserved3[22];
 
 #define VKI_SID_VENDOR_SPECIFIC_1_SIZE      160
    vki_uint8_t vendor_specific1[VKI_SID_VENDOR_SPECIFIC_1_SIZE];
 };
 
 //----------------------------------------------------------------------
 // From sys/queue.h
 //----------------------------------------------------------------------
 
 #define VKI_SLIST_ENTRY(type)                                               \
 struct {                                                                \
         struct type *sle_next;  /* next element */                      \
 }
 
 #define VKI_LIST_ENTRY(type)                                                \
 struct {                                                                \
         struct type *le_next;   /* next element */                      \
         struct type **le_prev;  /* address of previous next element */  \
 }
 
 #define VKI_STAILQ_ENTRY(type)                                              \
 struct {                                                                \
         struct type *stqe_next; /* next element */                      \
 }
 
 #ifdef VKI_QUEUE_MACRO_DEBUG_TRACE
 struct vki_qm_trace {
    unsigned long    lastline;
    unsigned long    prevline;
    const char      *lastfile;
    const char      *prevfile;
 };
 
 #define VKI_TRACEBUF        struct vki_qm_trace trace;
 #else
 #define VKI_TRACEBUF
 #endif
 
 #define VKI_TAILQ_ENTRY(type)                                               \
 struct {                                                                \
         struct type *tqe_next;  /* next element */                      \
         struct type **tqe_prev; /* address of previous next element */  \
         VKI_TRACEBUF                                                        \
 }
 
 
 //----------------------------------------------------------------------
 // From cam/cam_ccb.h
 //----------------------------------------------------------------------
 
 #define VKI_CAM_VERSION 0x1a    /* Hex value for current version */
 
 typedef union {
    VKI_LIST_ENTRY(vki_ccb_hdr) le;
    VKI_SLIST_ENTRY(vki_ccb_hdr) sle;
    VKI_TAILQ_ENTRY(vki_ccb_hdr) tqe;
    VKI_STAILQ_ENTRY(vki_ccb_hdr) stqe;
 } vki_camq_entry;
 
 typedef enum {
    /* Function code flags are bits greater than 0xff */
    VKI_XPT_FC_QUEUED           = 0x100,
    /* Non-immediate function code */
    VKI_XPT_FC_USER_CCB         = 0x200,
    VKI_XPT_FC_XPT_ONLY         = 0x400,
    /* Only for the transport layer device */
    VKI_XPT_FC_DEV_QUEUED       = 0x800 | VKI_XPT_FC_QUEUED,
    /* Passes through the device queues */
    /* Common function commands: 0x00->0x0F */
    VKI_XPT_NOOP                = 0x00,
    /* Execute Nothing */
    VKI_XPT_SCSI_IO             = 0x01 | VKI_XPT_FC_DEV_QUEUED,
    /* Execute the requested I/O operation */
    VKI_XPT_GDEV_TYPE           = 0x02,
    /* Get type information for specified device */
    VKI_XPT_GDEVLIST            = 0x03,
    /* Get a list of peripheral devices */
    VKI_XPT_PATH_INQ            = 0x04,
    /* Path routing inquiry */
    VKI_XPT_REL_SIMQ            = 0x05,
    /* Release a frozen device queue */
    VKI_XPT_SASYNC_CB           = 0x06,
    /* Set Asynchronous Callback Parameters */
    VKI_XPT_SDEV_TYPE           = 0x07,
    /* Set device type information */
    VKI_XPT_SCAN_BUS            = 0x08 | VKI_XPT_FC_QUEUED | VKI_XPT_FC_USER_CCB
                                  | VKI_XPT_FC_XPT_ONLY,
    /* (Re)Scan the SCSI Bus */
    VKI_XPT_DEV_MATCH           = 0x09 | VKI_XPT_FC_XPT_ONLY,
    /* Get EDT entries matching the given pattern */
    VKI_XPT_DEBUG               = 0x0a,
    /* Turn on debugging for a bus, target or lun */
    VKI_XPT_PATH_STATS          = 0x0b,
    /* Path statistics (error counts, etc.) */
    VKI_XPT_GDEV_STATS          = 0x0c,
    /* Device statistics (error counts, etc.) */
    VKI_XPT_FREEZE_QUEUE        = 0x0d,
    /* Freeze device queue */
    /* SCSI Control Functions: 0x10->0x1F */
    VKI_XPT_ABORT               = 0x10,
    /* Abort the specified CCB */
    VKI_XPT_RESET_BUS           = 0x11 | VKI_XPT_FC_XPT_ONLY,
    /* Reset the specified SCSI bus */
    VKI_XPT_RESET_DEV           = 0x12 | VKI_XPT_FC_DEV_QUEUED,
    /* Bus Device Reset the specified SCSI device */
    VKI_XPT_TERM_IO             = 0x13,
    /* Terminate the I/O process */
    VKI_XPT_SCAN_LUN            = 0x14 | VKI_XPT_FC_QUEUED | VKI_XPT_FC_USER_CCB
                                  | VKI_XPT_FC_XPT_ONLY,
    /* Scan Logical Unit */
    VKI_XPT_GET_TRAN_SETTINGS   = 0x15,
    /*
     * Get default/user transfer settings
     * for the target
     */
    VKI_XPT_SET_TRAN_SETTINGS   = 0x16,
    /*
     * Set transfer rate/width
     * negotiation settings
     */
    VKI_XPT_CALC_GEOMETRY       = 0x17,
    /*
     * Calculate the geometry parameters for
     * a device give the sector size and
     * volume size.
     */
    VKI_XPT_ATA_IO              = 0x18 | VKI_XPT_FC_DEV_QUEUED,
    /* Execute the requested ATA I/O operation */
    VKI_XPT_GET_SIM_KNOB        = 0x18,
    /*
     * Get SIM specific knob values.
     */
 
    VKI_XPT_SET_SIM_KNOB        = 0x19,
    /*
     * Set SIM specific knob values.
     */
    /* HBA engine commands 0x20->0x2F */
    VKI_XPT_ENG_INQ             = 0x20 | VKI_XPT_FC_XPT_ONLY,
    /* HBA engine feature inquiry */
    VKI_XPT_ENG_EXEC            = 0x21 | VKI_XPT_FC_DEV_QUEUED,
    /* HBA execute engine request */
 
    /* Target mode commands: 0x30->0x3F */
    VKI_XPT_EN_LUN              = 0x30,
    /* Enable LUN as a target */
    VKI_XPT_TARGET_IO           = 0x31 | VKI_XPT_FC_DEV_QUEUED,
    /* Execute target I/O request */
    VKI_XPT_ACCEPT_TARGET_IO    = 0x32 | VKI_XPT_FC_QUEUED | VKI_XPT_FC_USER_CCB,
    /* Accept Host Target Mode CDB */
    VKI_XPT_CONT_TARGET_IO      = 0x33 | VKI_XPT_FC_DEV_QUEUED,
    /* Continue Host Target I/O Connection */
    VKI_XPT_IMMED_NOTIFY        = 0x34 | VKI_XPT_FC_QUEUED | VKI_XPT_FC_USER_CCB,
    /* Notify Host Target driver of event (obsolete) */
    VKI_XPT_NOTIFY_ACK          = 0x35,
    /* Acknowledgement of event (obsolete) */
    VKI_XPT_IMMEDIATE_NOTIFY    = 0x36 | VKI_XPT_FC_QUEUED | VKI_XPT_FC_USER_CCB,
    /* Notify Host Target driver of event */
    VKI_XPT_NOTIFY_ACKNOWLEDGE  = 0x37 | VKI_XPT_FC_QUEUED | VKI_XPT_FC_USER_CCB,
    /* Acknowledgement of event */
    VKI_XPT_REPROBE_LUN      = 0x38 | VKI_XPT_FC_QUEUED | VKI_XPT_FC_USER_CCB,
    /* Query device capacity and notify GEOM */
 
    VKI_XPT_MMC_SET_TRAN_SETTINGS = 0x40 | VKI_XPT_FC_DEV_QUEUED,
    VKI_XPT_MMC_GET_TRAN_SETTINGS = 0x41 | VKI_XPT_FC_DEV_QUEUED,
    /* Vendor Unique codes: 0x80->0x8F */
    VKI_XPT_VUNIQUE             = 0x80
 } vki_xpt_opcode;
 
 
 /* CAM CCB flags */
 typedef enum {
    VKI_CAM_CDB_POINTER         = 0x00000001,/* The CDB field is a pointer    */
    VKI_CAM_unused1             = 0x00000002,
    VKI_CAM_unused2             = 0x00000004,
    VKI_CAM_NEGOTIATE           = 0x00000008,/*
                                               * Perform transport negotiation
                                               * with this command.
                                               */
    VKI_CAM_DATA_ISPHYS         = 0x00000010,/* Data type with physical addrs */
    VKI_CAM_DIS_AUTOSENSE       = 0x00000020,/* Disable autosense feature     */
    VKI_CAM_DIR_BOTH            = 0x00000000,/* Data direction (00:IN/OUT)  */
    VKI_CAM_DIR_IN              = 0x00000040,/* Data direction (01:DATA IN)   */
    VKI_CAM_DIR_OUT             = 0x00000080,/* Data direction (10:DATA OUT)  */
    VKI_CAM_DIR_NONE            = 0x000000C0,/* Data direction (11:no data)   */
    VKI_CAM_DIR_MASK            = 0x000000C0,/* Data direction Mask           */
    VKI_CAM_DATA_VADDR       = 0x00000000,/* Data type (000:Virtual)       */
    VKI_CAM_DATA_PADDR       = 0x00000010,/* Data type (001:Physical)      */
    VKI_CAM_DATA_SG      = 0x00040000,/* Data type (010:sglist)        */
    VKI_CAM_DATA_SG_PADDR    = 0x00040010,/* Data type (011:sglist phys)   */
    VKI_CAM_DATA_BIO     = 0x00200000,/* Data type (100:bio)           */
    VKI_CAM_DATA_MASK        = 0x00240010,/* Data type mask                */
    VKI_CAM_unused3      = 0x00000100,
    VKI_CAM_unused4      = 0x00000200,
    VKI_CAM_DEV_QFRZDIS         = 0x00000400,/* Disable DEV Q freezing        */
    VKI_CAM_DEV_QFREEZE         = 0x00000800,/* Freeze DEV Q on execution     */
    VKI_CAM_HIGH_POWER          = 0x00001000,/* Command takes a lot of power  */
    VKI_CAM_SENSE_PTR           = 0x00002000,/* Sense data is a pointer       */
    VKI_CAM_SENSE_PHYS          = 0x00004000,/* Sense pointer is physical addr*/
    VKI_CAM_TAG_ACTION_VALID    = 0x00008000,/* Use the tag action in this ccb*/
    VKI_CAM_PASS_ERR_RECOVER    = 0x00010000,/* Pass driver does err. recovery*/
    VKI_CAM_DIS_DISCONNECT      = 0x00020000,/* Disable disconnect            */
    VKI_CAM_unused5             = 0x00080000,
    VKI_CAM_unused6             = 0x00100000,
    VKI_CAM_CDB_PHYS            = 0x00400000,/* CDB poiner is physical        */
    VKI_CAM_unused7             = 0x00800000,
 
    /* Phase cognizant mode flags */
    VKI_CAM_unused8             = 0x01000000,
    VKI_CAM_unused9             = 0x02000000,
    VKI_CAM_unused10            = 0x04000000,
    VKI_CAM_unused11            = 0x08000000,
    VKI_CAM_unused12            = 0x10000000,
    VKI_CAM_unused13            = 0x20000000,
    VKI_CAM_unused14            = 0x40000000,
 
    /* Host target Mode flags */
    VKI_CAM_SEND_SENSE          = 0x08000000,/* Send sense data with status   */
    VKI_CAM_unused15            = 0x10000000,
    VKI_CAM_unused16            = 0x20000000,
    VKI_CAM_SEND_STATUS         = 0x40000000, /* Send status after data phase  */
 
    VKI_CAM_UNLOCKED     = 0x80000000 /* Call callback without lock.   */
 } vki_ccb_flags;
 
 typedef union {
    void            *ptr;
    vki_u_long      field;
    vki_uint8_t     bytes[sizeof(vki_uintptr_t)];
 } vki_ccb_priv_entry;
 
 #define VKI_IOCDBLEN  VKI_CAM_MAX_CDBLEN  /* Space for CDB bytes/pointer */
 #define VKI_CCB_PERIPH_PRIV_SIZE    2   /* size of peripheral private area */
 #define VKI_CCB_SIM_PRIV_SIZE       2   /* size of sim private area */
 
 typedef union {
    vki_ccb_priv_entry entries[VKI_CCB_PERIPH_PRIV_SIZE];
    vki_uint8_t        bytes[VKI_CCB_PERIPH_PRIV_SIZE * sizeof(vki_ccb_priv_entry)];
 } vki_ccb_ppriv_area;
 
 typedef union {
    vki_ccb_priv_entry entries[VKI_CCB_SIM_PRIV_SIZE];
    vki_uint8_t        bytes[VKI_CCB_SIM_PRIV_SIZE * sizeof(vki_ccb_priv_entry)];
 } vki_ccb_spriv_area;
 
 union vki_ccb;
 struct vki_cam_periph;
 
 typedef struct {
    struct vki_timeval   *etime;
    vki_uintptr_t    sim_data;
    vki_uintptr_t    periph_data;
 } vki_ccb_qos_area;
 
 struct vki_ccb_hdr {
    vki_cam_pinfo   pinfo;          /* Info for priority scheduling */
    vki_camq_entry  xpt_links;      /* For chaining in the XPT layer */
    vki_camq_entry  sim_links;      /* For chaining in the SIM layer */
    vki_camq_entry  periph_links;   /* For chaining in the type driver */
 #if BYTE_ORDER == LITTLE_ENDIAN
    vki_uint16_t       retry_count;
    vki_uint16_t       alloc_flags;  /* ccb_alloc_flags */
 #else
    vki_uint16_t       alloc_flags;  /* ccb_alloc_flags */
    vki_uint16_t       retry_count;
 #endif
    void         (*cbfcnp)(struct vki_cam_periph *, union vki_ccb *);
    /* Callback on completion function */
    vki_xpt_opcode  func_code;      /* XPT function code */
    vki_uint32_t    status;         /* Status returned by CAM subsystem */
    struct      vki_cam_path *path; /* Compiled path for this ccb */
    vki_path_id_t   path_id;        /* Path ID for the request */
    vki_target_id_t target_id;      /* Target device ID */
    vki_lun_id_t    target_lun;     /* Target LUN number */
    vki_uint32_t    flags;          /* ccb_flags */
    vki_uint32_t xflags;     /* Extended flags */
    vki_ccb_ppriv_area  periph_priv;
    vki_ccb_spriv_area  sim_priv;
    vki_ccb_qos_area qos;
    vki_uint32_t timeout;    /* Hard timeout value in mseconds */
    struct vki_timeval   softtimeout;    /* Soft timeout value in sec + usec */
 };
 
 typedef union {
    vki_u_int8_t  *cdb_ptr;             /* Pointer to the CDB bytes to send */
    /* Area for the CDB send */
    vki_u_int8_t  cdb_bytes[VKI_IOCDBLEN];
 } vki_cdb_t;
 
 
 /*
  * SCSI I/O Request CCB used for the XPT_SCSI_IO and XPT_CONT_TARGET_IO
  * function codes.
  */
 struct vki_ccb_scsiio {
    struct     vki_ccb_hdr ccb_h;
    union      vki_ccb *next_ccb;   /* Ptr for next CCB for action */
    vki_u_int8_t   *req_map;        /* Ptr to mapping info */
    vki_u_int8_t   *data_ptr;       /* Ptr to the data buf/SG list */
    vki_u_int32_t  dxfer_len;       /* Data transfer length */
    /* Autosense storage */
    struct     vki_scsi_sense_data sense_data;
    vki_u_int8_t   sense_len;       /* Number of bytes to autosense */
    vki_u_int8_t   cdb_len;         /* Number of bytes for the CDB */
    vki_u_int16_t  sglist_cnt;      /* Number of SG list entries */
    vki_u_int8_t   scsi_status;     /* Returned SCSI status */
    vki_u_int8_t   sense_resid;     /* Autosense resid length: 2's comp */
    vki_u_int32_t  resid;           /* Transfer residual length: 2's comp */
    vki_cdb_t      cdb_io;          /* Union for CDB bytes/pointer */
    vki_u_int8_t   *msg_ptr;        /* Pointer to the message buffer */
    vki_u_int16_t  msg_len;         /* Number of bytes for the Message */
    vki_u_int8_t   tag_action;      /* What to do for tag queueing */
    /*
     * The tag action should be either the define below (to send a
     * non-tagged transaction) or one of the defined scsi tag messages
     * from scsi_message.h.
     */
    vki_uint8_t     priority;        /* Command priority for SIMPLE tag */
    vki_u_int      tag_id;          /* tag id from initator (target mode) */
    vki_u_int      init_id;         /* initiator id of who selected */
 };
 
 typedef enum {
    VKI_CAM_DEV_MATCH_LAST,
    VKI_CAM_DEV_MATCH_MORE,
    VKI_CAM_DEV_MATCH_LIST_CHANGED,
    VKI_CAM_DEV_MATCH_SIZE_ERROR,
    VKI_CAM_DEV_MATCH_ERROR
 } vki_ccb_dev_match_status;
 
 
 struct vki_dev_match_pattern;
 
 typedef enum {
    VKI_DEV_MATCH_PERIPH,
    VKI_DEV_MATCH_DEVICE,
    VKI_DEV_MATCH_BUS
 } vki_dev_match_type;
 
 #define VKI_DEV_IDLEN       16          /* ASCII string len for device names */
 
 struct vki_periph_match_result {
    char                    periph_name[VKI_DEV_IDLEN];
    vki_uint32_t            unit_number;
    vki_path_id_t           path_id;
    vki_target_id_t         target_id;
    vki_lun_id_t            target_lun;
 };
 
 typedef enum {
    VKI_PROTO_UNKNOWN,
    VKI_PROTO_UNSPECIFIED,
    VKI_PROTO_SCSI,     /* Small Computer System Interface */
    VKI_PROTO_ATA,      /* AT Attachment */
    VKI_PROTO_ATAPI,    /* AT Attachment Packetized Interface */
    VKI_PROTO_SATAPM,   /* SATA Port Multiplier */
    VKI_PROTO_SEMB,  /* SATA Enclosure Management Bridge */
    VKI_PROTO_NVME,  /* NVME */
    VKI_PROTO_MMCSD, /* MMC, SD, SDIO */
 } vki_cam_proto;
 
 typedef enum {
    VKI_DEV_RESULT_NOFLAG               = 0x00,
    VKI_DEV_RESULT_UNCONFIGURED         = 0x01
 } vki_dev_result_flags;
 
 
 struct vki_device_match_result {
    vki_path_id_t                   path_id;
    vki_target_id_t                 target_id;
    vki_lun_id_t                    target_lun;
    vki_cam_proto                   protocol;
    struct vki_scsi_inquiry_data    inq_data;
    struct vki_ata_params           ident_data;
    vki_dev_result_flags            flags;
 };
 
 struct vki_bus_match_result {
    vki_path_id_t   path_id;
    char            dev_name[VKI_DEV_IDLEN];
    vki_uint32_t    unit_number;
    vki_uint32_t    bus_id;
 };
 
 union vki_match_result {
    struct vki_periph_match_result      periph_result;
    struct vki_device_match_result      device_result;
    struct vki_bus_match_result         bus_result;
 };
 
 struct vki_dev_match_result {
    vki_dev_match_type          type;
    union vki_match_result      result;
 };
 
 typedef enum {
    VKI_CAM_DEV_POS_NONE        = 0x000,
    VKI_CAM_DEV_POS_BUS         = 0x001,
    VKI_CAM_DEV_POS_TARGET      = 0x002,
    VKI_CAM_DEV_POS_DEVICE      = 0x004,
    VKI_CAM_DEV_POS_PERIPH      = 0x008,
    VKI_CAM_DEV_POS_PDPTR       = 0x010,
    VKI_CAM_DEV_POS_TYPEMASK    = 0xf00,
    VKI_CAM_DEV_POS_EDT         = 0x100,
    VKI_CAM_DEV_POS_PDRV        = 0x200
 } vki_dev_pos_type;
 
 struct vki_ccb_dm_cookie {
    void    *bus;
    void    *target;
    void    *device;
    void    *periph;
    void    *pdrv;
 };
 
 struct vki_ccb_dev_position {
    vki_u_int                generations[4];
 #define VKI_CAM_BUS_GENERATION      0x00
 #define VKI_CAM_TARGET_GENERATION   0x01
 #define VKI_CAM_DEV_GENERATION      0x02
 #define VKI_CAM_PERIPH_GENERATION   0x03
    vki_dev_pos_type        position_type;
    struct vki_ccb_dm_cookie cookie;
 };
 
 struct vki_ccb_dev_match {
    struct vki_ccb_hdr              ccb_h;
    vki_ccb_dev_match_status        status;
    vki_uint32_t                    num_patterns;
    vki_uint32_t                    pattern_buf_len;
    struct vki_dev_match_pattern    *patterns;
    vki_uint32_t                    num_matches;
    vki_uint32_t                    match_buf_len;
    struct vki_dev_match_result     *matches;
    struct vki_ccb_dev_position     pos;
 };
 
 /*
  * Union of all CCB types for kernel space allocation.  This union should
  * never be used for manipulating CCBs - its only use is for the allocation
  * and deallocation of raw CCB space and is the return type of xpt_ccb_alloc
  * and the argument to xpt_ccb_free.
  */
 union vki_ccb {
    /* Only letting out ones currently handled */
    struct  vki_ccb_hdr             ccb_h;  /* For convenience */
    struct  vki_ccb_scsiio          csio;
 #if 0
    struct  ccb_getdev              cgd;
    struct  ccb_getdevlist          cgdl;
    struct  ccb_pathinq             cpi;
    struct  ccb_relsim              crs;
    struct  ccb_setasync            csa;
    struct  ccb_setdev              csd;
    struct  ccb_pathstats           cpis;
    struct  ccb_getdevstats         cgds;
 #endif
    struct  vki_ccb_dev_match       cdm;
 #if 0
    struct  ccb_trans_settings      cts;
    struct  ccb_calc_geometry       ccg;
    struct  ccb_sim_knob            knob;
    struct  ccb_abort               cab;
    struct  ccb_resetbus            crb;
    struct  ccb_resetdev            crd;
    struct  ccb_termio              tio;
    struct  ccb_accept_tio          atio;
    struct  ccb_scsiio              ctio;
    struct  ccb_en_lun              cel;
    struct  ccb_immed_notify        cin;
    struct  ccb_notify_ack          cna;
    struct  ccb_immediate_notify    cin1;
    struct  ccb_notify_acknowledge  cna2;
    struct  ccb_eng_inq             cei;
    struct  ccb_eng_exec            cee;
    struct  ccb_rescan              crcn;
    struct  ccb_debug               cdbg;
    struct  ccb_ataio               ataio;
 #endif
    char make_union_right_size[0x4E0];
 };
 
 #define VKI_CAMIOCOMMAND _VKI_IOWR(VKI_CAM_VERSION, 2, union vki_ccb)
 
 
 /*--------------------------------------------------------------------*/
 /*--- end                                                          ---*/
 /*--------------------------------------------------------------------*/