The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux.h

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    1 /*-
    2  * Copyright (c) 1994-1996 Søren Schmidt
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer
   10  *    in this position and unchanged.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * $FreeBSD: releng/10.1/sys/i386/linux/linux.h 272020 2014-09-23 07:50:04Z bz $
   29  */
   30 
   31 #ifndef _I386_LINUX_H_
   32 #define _I386_LINUX_H_
   33 
   34 #include <sys/signal.h> /* for sigval union */
   35 
   36 #include <i386/linux/linux_syscall.h>
   37 
   38 /*
   39  * debugging support
   40  */
   41 extern u_char linux_debug_map[];
   42 #define ldebug(name)    isclr(linux_debug_map, LINUX_SYS_linux_ ## name)
   43 #define ARGS(nm, fmt)   "linux(%ld): "#nm"("fmt")\n", (long)td->td_proc->p_pid
   44 #define LMSG(fmt)       "linux(%ld): "fmt"\n", (long)td->td_proc->p_pid
   45 #define LINUX_DTRACE    linuxulator
   46 
   47 #ifdef MALLOC_DECLARE
   48 MALLOC_DECLARE(M_LINUX);
   49 #endif
   50 
   51 #define LINUX_SHAREDPAGE        (VM_MAXUSER_ADDRESS - PAGE_SIZE)
   52 #define LINUX_USRSTACK          LINUX_SHAREDPAGE
   53 
   54 #define PTRIN(v)        (void *)(v)
   55 #define PTROUT(v)       (l_uintptr_t)(v)
   56 
   57 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
   58 #define CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0)
   59 #define PTRIN_CP(src,dst,fld) \
   60         do { (dst).fld = PTRIN((src).fld); } while (0)
   61 
   62 /*
   63  * Provide a separate set of types for the Linux types.
   64  */
   65 typedef int             l_int;
   66 typedef int32_t         l_long;
   67 typedef int64_t         l_longlong;
   68 typedef short           l_short;
   69 typedef unsigned int    l_uint;
   70 typedef uint32_t        l_ulong;
   71 typedef uint64_t        l_ulonglong;
   72 typedef unsigned short  l_ushort;
   73 
   74 typedef char            *l_caddr_t;
   75 typedef l_ulong         l_uintptr_t;
   76 typedef l_long          l_clock_t;
   77 typedef l_int           l_daddr_t;
   78 typedef l_ushort        l_dev_t;
   79 typedef l_uint          l_gid_t;
   80 typedef l_ushort        l_gid16_t;
   81 typedef l_ulong         l_ino_t;
   82 typedef l_int           l_key_t;
   83 typedef l_longlong      l_loff_t;
   84 typedef l_ushort        l_mode_t;
   85 typedef l_long          l_off_t;
   86 typedef l_int           l_pid_t;
   87 typedef l_uint          l_size_t;
   88 typedef l_long          l_suseconds_t;
   89 typedef l_long          l_time_t;
   90 typedef l_uint          l_uid_t;
   91 typedef l_ushort        l_uid16_t;
   92 typedef l_int           l_timer_t;
   93 typedef l_int           l_mqd_t;
   94 
   95 typedef struct {
   96         l_int           val[2];
   97 } l_fsid_t;
   98 
   99 typedef struct {
  100         l_time_t        tv_sec;
  101         l_suseconds_t   tv_usec;
  102 } l_timeval;
  103 
  104 #define l_fd_set        fd_set
  105 
  106 /*
  107  * Miscellaneous
  108  */
  109 #define LINUX_AT_COUNT          16      /* Count of used aux entry types.
  110                                          * Keep this synchronized with
  111                                          * elf_linux_fixup() code.
  112                                          */
  113 struct l___sysctl_args
  114 {
  115         l_int           *name;
  116         l_int           nlen;
  117         void            *oldval;
  118         l_size_t        *oldlenp;
  119         void            *newval;
  120         l_size_t        newlen;
  121         l_ulong         __spare[4];
  122 };
  123 
  124 /* Resource limits */
  125 #define LINUX_RLIMIT_CPU        0
  126 #define LINUX_RLIMIT_FSIZE      1
  127 #define LINUX_RLIMIT_DATA       2
  128 #define LINUX_RLIMIT_STACK      3
  129 #define LINUX_RLIMIT_CORE       4
  130 #define LINUX_RLIMIT_RSS        5
  131 #define LINUX_RLIMIT_NPROC      6
  132 #define LINUX_RLIMIT_NOFILE     7
  133 #define LINUX_RLIMIT_MEMLOCK    8
  134 #define LINUX_RLIMIT_AS         9       /* Address space limit */
  135 
  136 #define LINUX_RLIM_NLIMITS      10
  137 
  138 struct l_rlimit {
  139         l_ulong rlim_cur;
  140         l_ulong rlim_max;
  141 };
  142 
  143 /* mmap options */
  144 #define LINUX_MAP_SHARED        0x0001
  145 #define LINUX_MAP_PRIVATE       0x0002
  146 #define LINUX_MAP_FIXED         0x0010
  147 #define LINUX_MAP_ANON          0x0020
  148 #define LINUX_MAP_GROWSDOWN     0x0100
  149 
  150 struct l_mmap_argv {
  151         l_uintptr_t     addr;
  152         l_size_t        len;
  153         l_int           prot;
  154         l_int           flags;
  155         l_int           fd;
  156         l_off_t         pgoff;
  157 } __packed;
  158 
  159 /*
  160  * stat family of syscalls
  161  */
  162 struct l_timespec {
  163         l_time_t        tv_sec;
  164         l_long          tv_nsec;
  165 };
  166 
  167 struct l_newstat {
  168         l_ushort        st_dev;
  169         l_ushort        __pad1;
  170         l_ulong         st_ino;
  171         l_ushort        st_mode;
  172         l_ushort        st_nlink;
  173         l_ushort        st_uid;
  174         l_ushort        st_gid;
  175         l_ushort        st_rdev;
  176         l_ushort        __pad2;
  177         l_ulong         st_size;
  178         l_ulong         st_blksize;
  179         l_ulong         st_blocks;
  180         struct l_timespec       st_atim;
  181         struct l_timespec       st_mtim;
  182         struct l_timespec       st_ctim;
  183         l_ulong         __unused4;
  184         l_ulong         __unused5;
  185 };
  186 
  187 struct l_stat {
  188         l_ushort        st_dev;
  189         l_ulong         st_ino;
  190         l_ushort        st_mode;
  191         l_ushort        st_nlink;
  192         l_ushort        st_uid;
  193         l_ushort        st_gid;
  194         l_ushort        st_rdev;
  195         l_long          st_size;
  196         struct l_timespec       st_atim;
  197         struct l_timespec       st_mtim;
  198         struct l_timespec       st_ctim;
  199         l_long          st_blksize;
  200         l_long          st_blocks;
  201         l_ulong         st_flags;
  202         l_ulong         st_gen;
  203 };
  204 
  205 struct l_stat64 {
  206         l_ushort        st_dev;
  207         u_char          __pad0[10];
  208         l_ulong         __st_ino;
  209         l_uint          st_mode;
  210         l_uint          st_nlink;
  211         l_ulong         st_uid;
  212         l_ulong         st_gid;
  213         l_ushort        st_rdev;
  214         u_char          __pad3[10];
  215         l_longlong      st_size;
  216         l_ulong         st_blksize;
  217         l_ulong         st_blocks;
  218         l_ulong         __pad4;
  219         struct l_timespec       st_atim;
  220         struct l_timespec       st_mtim;
  221         struct l_timespec       st_ctim;
  222         l_ulonglong     st_ino;
  223 };
  224 
  225 struct l_statfs64 { 
  226         l_int           f_type; 
  227         l_int           f_bsize; 
  228         uint64_t        f_blocks; 
  229         uint64_t        f_bfree; 
  230         uint64_t        f_bavail; 
  231         uint64_t        f_files; 
  232         uint64_t        f_ffree; 
  233         l_fsid_t        f_fsid;
  234         l_int           f_namelen;
  235         l_int           f_spare[6];
  236 };
  237 
  238 /*
  239  * Signalling
  240  */
  241 #define LINUX_SIGHUP            1
  242 #define LINUX_SIGINT            2
  243 #define LINUX_SIGQUIT           3
  244 #define LINUX_SIGILL            4
  245 #define LINUX_SIGTRAP           5
  246 #define LINUX_SIGABRT           6
  247 #define LINUX_SIGIOT            LINUX_SIGABRT
  248 #define LINUX_SIGBUS            7
  249 #define LINUX_SIGFPE            8
  250 #define LINUX_SIGKILL           9
  251 #define LINUX_SIGUSR1           10
  252 #define LINUX_SIGSEGV           11
  253 #define LINUX_SIGUSR2           12
  254 #define LINUX_SIGPIPE           13
  255 #define LINUX_SIGALRM           14
  256 #define LINUX_SIGTERM           15
  257 #define LINUX_SIGSTKFLT         16
  258 #define LINUX_SIGCHLD           17
  259 #define LINUX_SIGCONT           18
  260 #define LINUX_SIGSTOP           19
  261 #define LINUX_SIGTSTP           20
  262 #define LINUX_SIGTTIN           21
  263 #define LINUX_SIGTTOU           22
  264 #define LINUX_SIGURG            23
  265 #define LINUX_SIGXCPU           24
  266 #define LINUX_SIGXFSZ           25
  267 #define LINUX_SIGVTALRM         26
  268 #define LINUX_SIGPROF           27
  269 #define LINUX_SIGWINCH          28
  270 #define LINUX_SIGIO             29
  271 #define LINUX_SIGPOLL           LINUX_SIGIO
  272 #define LINUX_SIGPWR            30
  273 #define LINUX_SIGSYS            31
  274 #define LINUX_SIGRTMIN          32
  275 
  276 #define LINUX_SIGTBLSZ          31
  277 #define LINUX_NSIG_WORDS        2
  278 #define LINUX_NBPW              32
  279 #define LINUX_NSIG              (LINUX_NBPW * LINUX_NSIG_WORDS)
  280 
  281 /* sigaction flags */
  282 #define LINUX_SA_NOCLDSTOP      0x00000001
  283 #define LINUX_SA_NOCLDWAIT      0x00000002
  284 #define LINUX_SA_SIGINFO        0x00000004
  285 #define LINUX_SA_RESTORER       0x04000000
  286 #define LINUX_SA_ONSTACK        0x08000000
  287 #define LINUX_SA_RESTART        0x10000000
  288 #define LINUX_SA_INTERRUPT      0x20000000
  289 #define LINUX_SA_NOMASK         0x40000000
  290 #define LINUX_SA_ONESHOT        0x80000000
  291 
  292 /* sigprocmask actions */
  293 #define LINUX_SIG_BLOCK         0
  294 #define LINUX_SIG_UNBLOCK       1
  295 #define LINUX_SIG_SETMASK       2
  296 
  297 /* sigset_t macros */
  298 #define LINUX_SIGEMPTYSET(set)          (set).__bits[0] = (set).__bits[1] = 0
  299 #define LINUX_SIGISMEMBER(set, sig)     SIGISMEMBER(set, sig)
  300 #define LINUX_SIGADDSET(set, sig)       SIGADDSET(set, sig)
  301 
  302 /* sigaltstack */
  303 #define LINUX_MINSIGSTKSZ       2048
  304 #define LINUX_SS_ONSTACK        1
  305 #define LINUX_SS_DISABLE        2
  306 
  307 int linux_to_bsd_sigaltstack(int lsa);
  308 int bsd_to_linux_sigaltstack(int bsa);
  309 
  310 typedef void    (*l_handler_t)(l_int);
  311 typedef l_ulong l_osigset_t;
  312 
  313 typedef struct {
  314         l_uint  __bits[LINUX_NSIG_WORDS];
  315 } l_sigset_t;
  316 
  317 typedef struct {
  318         l_handler_t     lsa_handler;
  319         l_osigset_t     lsa_mask;
  320         l_ulong         lsa_flags;
  321         void    (*lsa_restorer)(void);
  322 } l_osigaction_t;
  323 
  324 typedef struct {
  325         l_handler_t     lsa_handler;
  326         l_ulong         lsa_flags;
  327         void    (*lsa_restorer)(void);
  328         l_sigset_t      lsa_mask;
  329 } l_sigaction_t;
  330 
  331 typedef struct {
  332         void            *ss_sp;
  333         l_int           ss_flags;
  334         l_size_t        ss_size;
  335 } l_stack_t;
  336 
  337 /* The Linux sigcontext, pretty much a standard 386 trapframe. */
  338 struct l_sigcontext {
  339         l_int           sc_gs;
  340         l_int           sc_fs;
  341         l_int           sc_es;
  342         l_int           sc_ds;
  343         l_int           sc_edi;
  344         l_int           sc_esi;
  345         l_int           sc_ebp;
  346         l_int           sc_esp;
  347         l_int           sc_ebx;
  348         l_int           sc_edx;
  349         l_int           sc_ecx;
  350         l_int           sc_eax;
  351         l_int           sc_trapno;
  352         l_int           sc_err;
  353         l_int           sc_eip;
  354         l_int           sc_cs;
  355         l_int           sc_eflags;
  356         l_int           sc_esp_at_signal;
  357         l_int           sc_ss;
  358         l_int           sc_387;
  359         l_int           sc_mask;
  360         l_int           sc_cr2;
  361 };
  362 
  363 struct l_ucontext {
  364         l_ulong         uc_flags;
  365         void            *uc_link;
  366         l_stack_t       uc_stack;
  367         struct l_sigcontext     uc_mcontext;
  368         l_sigset_t      uc_sigmask;
  369 };
  370 
  371 #define LINUX_SI_MAX_SIZE       128
  372 #define LINUX_SI_PAD_SIZE       ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3)
  373 
  374 typedef union l_sigval {
  375         l_int           sival_int;
  376         l_uintptr_t     sival_ptr;
  377 } l_sigval_t;
  378 
  379 typedef struct l_siginfo {
  380         l_int           lsi_signo;
  381         l_int           lsi_errno;
  382         l_int           lsi_code;
  383         union {
  384                 l_int   _pad[LINUX_SI_PAD_SIZE];
  385 
  386                 struct {
  387                         l_pid_t         _pid;
  388                         l_uid_t         _uid;
  389                 } _kill;
  390 
  391                 struct {
  392                         l_timer_t       _tid;
  393                         l_int           _overrun;
  394                         char            _pad[sizeof(l_uid_t) - sizeof(l_int)];
  395                         l_sigval_t      _sigval;
  396                         l_int           _sys_private;
  397                 } _timer;
  398 
  399                 struct {
  400                         l_pid_t         _pid;           /* sender's pid */
  401                         l_uid_t         _uid;           /* sender's uid */
  402                         l_sigval_t      _sigval;
  403                 } _rt;
  404 
  405                 struct {
  406                         l_pid_t         _pid;           /* which child */
  407                         l_uid_t         _uid;           /* sender's uid */
  408                         l_int           _status;        /* exit code */
  409                         l_clock_t       _utime;
  410                         l_clock_t       _stime;
  411                 } _sigchld;
  412 
  413                 struct {
  414                         l_uintptr_t     _addr;  /* Faulting insn/memory ref. */
  415                 } _sigfault;
  416 
  417                 struct {
  418                         l_long          _band;  /* POLL_IN,POLL_OUT,POLL_MSG */
  419                         l_int           _fd;
  420                 } _sigpoll;
  421         } _sifields;
  422 } l_siginfo_t;
  423 
  424 #define lsi_pid         _sifields._kill._pid
  425 #define lsi_uid         _sifields._kill._uid
  426 #define lsi_tid         _sifields._timer._tid
  427 #define lsi_overrun     _sifields._timer._overrun
  428 #define lsi_sys_private _sifields._timer._sys_private
  429 #define lsi_status      _sifields._sigchld._status
  430 #define lsi_utime       _sifields._sigchld._utime
  431 #define lsi_stime       _sifields._sigchld._stime
  432 #define lsi_value       _sifields._rt._sigval
  433 #define lsi_int         _sifields._rt._sigval.sival_int
  434 #define lsi_ptr         _sifields._rt._sigval.sival_ptr
  435 #define lsi_addr        _sifields._sigfault._addr
  436 #define lsi_band        _sifields._sigpoll._band
  437 #define lsi_fd          _sifields._sigpoll._fd
  438 
  439 struct l_fpreg {
  440         u_int16_t       significand[4];
  441         u_int16_t       exponent;
  442 };
  443 
  444 struct l_fpxreg {
  445         u_int16_t       significand[4];
  446         u_int16_t       exponent;
  447         u_int16_t       padding[3];
  448 };
  449 
  450 struct l_xmmreg {
  451         u_int32_t       element[4];
  452 };
  453 
  454 struct l_fpstate {
  455         /* Regular FPU environment */
  456         u_int32_t               cw;
  457         u_int32_t               sw;
  458         u_int32_t               tag;
  459         u_int32_t               ipoff;
  460         u_int32_t               cssel;
  461         u_int32_t               dataoff;
  462         u_int32_t               datasel;
  463         struct l_fpreg          _st[8];
  464         u_int16_t               status;
  465         u_int16_t               magic;          /* 0xffff = regular FPU data */
  466 
  467         /* FXSR FPU environment */
  468         u_int32_t               _fxsr_env[6];   /* env is ignored. */
  469         u_int32_t               mxcsr;
  470         u_int32_t               reserved;
  471         struct l_fpxreg         _fxsr_st[8];    /* reg data is ignored. */
  472         struct l_xmmreg         _xmm[8];
  473         u_int32_t               padding[56];
  474 };
  475 
  476 /*
  477  * We make the stack look like Linux expects it when calling a signal
  478  * handler, but use the BSD way of calling the handler and sigreturn().
  479  * This means that we need to pass the pointer to the handler too.
  480  * It is appended to the frame to not interfere with the rest of it.
  481  */
  482 struct l_sigframe {
  483         l_int                   sf_sig;
  484         struct l_sigcontext     sf_sc;
  485         struct l_fpstate        sf_fpstate;
  486         l_uint                  sf_extramask[LINUX_NSIG_WORDS-1];
  487         l_handler_t             sf_handler;
  488 };
  489 
  490 struct l_rt_sigframe {
  491         l_int                   sf_sig;
  492         l_siginfo_t             *sf_siginfo;
  493         struct l_ucontext       *sf_ucontext;
  494         l_siginfo_t             sf_si;
  495         struct l_ucontext       sf_sc;
  496         l_handler_t             sf_handler;
  497 };
  498 
  499 extern struct sysentvec linux_sysvec;
  500 extern struct sysentvec elf_linux_sysvec;
  501 
  502 /*
  503  * open/fcntl flags
  504  */
  505 #define LINUX_O_RDONLY          00000000
  506 #define LINUX_O_WRONLY          00000001
  507 #define LINUX_O_RDWR            00000002
  508 #define LINUX_O_ACCMODE         00000003
  509 #define LINUX_O_CREAT           00000100
  510 #define LINUX_O_EXCL            00000200
  511 #define LINUX_O_NOCTTY          00000400
  512 #define LINUX_O_TRUNC           00001000
  513 #define LINUX_O_APPEND          00002000
  514 #define LINUX_O_NONBLOCK        00004000
  515 #define LINUX_O_NDELAY          LINUX_O_NONBLOCK
  516 #define LINUX_O_SYNC            00010000
  517 #define LINUX_FASYNC            00020000
  518 #define LINUX_O_DIRECT          00040000        /* Direct disk access hint */
  519 #define LINUX_O_LARGEFILE       00100000
  520 #define LINUX_O_DIRECTORY       00200000        /* Must be a directory */
  521 #define LINUX_O_NOFOLLOW        00400000        /* Do not follow links */
  522 #define LINUX_O_NOATIME         01000000
  523 #define LINUX_O_CLOEXEC         02000000
  524 
  525 #define LINUX_F_DUPFD           0
  526 #define LINUX_F_GETFD           1
  527 #define LINUX_F_SETFD           2
  528 #define LINUX_F_GETFL           3
  529 #define LINUX_F_SETFL           4
  530 #define LINUX_F_GETLK           5
  531 #define LINUX_F_SETLK           6
  532 #define LINUX_F_SETLKW          7
  533 #define LINUX_F_SETOWN          8
  534 #define LINUX_F_GETOWN          9
  535 
  536 #define LINUX_F_GETLK64         12
  537 #define LINUX_F_SETLK64         13
  538 #define LINUX_F_SETLKW64        14
  539 
  540 #define LINUX_F_RDLCK           0
  541 #define LINUX_F_WRLCK           1
  542 #define LINUX_F_UNLCK           2
  543 
  544 union l_semun {
  545         l_int           val;
  546         struct l_semid_ds       *buf;
  547         l_ushort        *array;
  548         struct l_seminfo        *__buf;
  549         void            *__pad;
  550 };
  551 
  552 /*
  553  * Socket defines
  554  */
  555 #define LINUX_SOL_SOCKET        1
  556 #define LINUX_SOL_IP            0
  557 #define LINUX_SOL_IPX           256
  558 #define LINUX_SOL_AX25          257
  559 #define LINUX_SOL_TCP           6
  560 #define LINUX_SOL_UDP           17
  561 
  562 #define LINUX_SO_DEBUG          1
  563 #define LINUX_SO_REUSEADDR      2
  564 #define LINUX_SO_TYPE           3
  565 #define LINUX_SO_ERROR          4
  566 #define LINUX_SO_DONTROUTE      5
  567 #define LINUX_SO_BROADCAST      6
  568 #define LINUX_SO_SNDBUF         7
  569 #define LINUX_SO_RCVBUF         8
  570 #define LINUX_SO_KEEPALIVE      9
  571 #define LINUX_SO_OOBINLINE      10
  572 #define LINUX_SO_NO_CHECK       11
  573 #define LINUX_SO_PRIORITY       12
  574 #define LINUX_SO_LINGER         13
  575 #define LINUX_SO_PEERCRED       17
  576 #define LINUX_SO_RCVLOWAT       18
  577 #define LINUX_SO_SNDLOWAT       19
  578 #define LINUX_SO_RCVTIMEO       20
  579 #define LINUX_SO_SNDTIMEO       21
  580 #define LINUX_SO_TIMESTAMP      29
  581 #define LINUX_SO_ACCEPTCONN     30
  582 
  583 struct l_sockaddr {
  584         l_ushort        sa_family;
  585         char            sa_data[14];
  586 };
  587 
  588 struct l_msghdr {
  589         l_uintptr_t     msg_name;
  590         l_int           msg_namelen;
  591         l_uintptr_t     msg_iov;
  592         l_size_t        msg_iovlen;
  593         l_uintptr_t     msg_control;
  594         l_size_t        msg_controllen;
  595         l_uint          msg_flags;
  596 };
  597 
  598 struct l_cmsghdr {
  599         l_size_t        cmsg_len;
  600         l_int           cmsg_level;
  601         l_int           cmsg_type;
  602 };
  603 
  604 struct l_ifmap {
  605         l_ulong         mem_start;
  606         l_ulong         mem_end;
  607         l_ushort        base_addr;
  608         u_char          irq;
  609         u_char          dma;
  610         u_char          port;
  611 };
  612 
  613 #define LINUX_IFHWADDRLEN       6
  614 #define LINUX_IFNAMSIZ          16
  615 
  616 struct l_ifreq {
  617         union {
  618                 char    ifrn_name[LINUX_IFNAMSIZ];
  619         } ifr_ifrn;
  620 
  621         union {
  622                 struct l_sockaddr       ifru_addr;
  623                 struct l_sockaddr       ifru_dstaddr;
  624                 struct l_sockaddr       ifru_broadaddr;
  625                 struct l_sockaddr       ifru_netmask;
  626                 struct l_sockaddr       ifru_hwaddr;
  627                 l_short         ifru_flags[1];
  628                 l_int           ifru_metric;
  629                 l_int           ifru_mtu;
  630                 struct l_ifmap  ifru_map;
  631                 char            ifru_slave[LINUX_IFNAMSIZ];
  632                 l_caddr_t       ifru_data;
  633         } ifr_ifru;
  634 };
  635 
  636 #define ifr_name        ifr_ifrn.ifrn_name      /* Interface name */
  637 #define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address */
  638 
  639 /*
  640  * poll()
  641  */
  642 #define LINUX_POLLIN            0x0001
  643 #define LINUX_POLLPRI           0x0002
  644 #define LINUX_POLLOUT           0x0004
  645 #define LINUX_POLLERR           0x0008
  646 #define LINUX_POLLHUP           0x0010
  647 #define LINUX_POLLNVAL          0x0020
  648 #define LINUX_POLLRDNORM        0x0040
  649 #define LINUX_POLLRDBAND        0x0080
  650 #define LINUX_POLLWRNORM        0x0100
  651 #define LINUX_POLLWRBAND        0x0200
  652 #define LINUX_POLLMSG           0x0400
  653 
  654 struct l_pollfd {
  655         l_int           fd;
  656         l_short         events;
  657         l_short         revents;
  658 };
  659 
  660 struct l_user_desc {
  661         l_uint          entry_number;
  662         l_uint          base_addr;
  663         l_uint          limit;
  664         l_uint          seg_32bit:1;
  665         l_uint          contents:2;
  666         l_uint          read_exec_only:1;
  667         l_uint          limit_in_pages:1;
  668         l_uint          seg_not_present:1;
  669         l_uint          useable:1;
  670 };
  671 
  672 struct l_desc_struct {
  673         unsigned long   a, b;
  674 };
  675 
  676 
  677 #define LINUX_LOWERWORD 0x0000ffff
  678 
  679 /*
  680  * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h.
  681  * These convert Linux user space descriptor to machine one.
  682  */
  683 #define LINUX_LDT_entry_a(info)                                 \
  684         ((((info)->base_addr & LINUX_LOWERWORD) << 16) |        \
  685         ((info)->limit & LINUX_LOWERWORD))
  686 
  687 #define LINUX_ENTRY_B_READ_EXEC_ONLY    9
  688 #define LINUX_ENTRY_B_CONTENTS          10
  689 #define LINUX_ENTRY_B_SEG_NOT_PRESENT   15
  690 #define LINUX_ENTRY_B_BASE_ADDR         16
  691 #define LINUX_ENTRY_B_USEABLE           20
  692 #define LINUX_ENTRY_B_SEG32BIT          22
  693 #define LINUX_ENTRY_B_LIMIT             23
  694 
  695 #define LINUX_LDT_entry_b(info)                                                 \
  696         (((info)->base_addr & 0xff000000) |                                     \
  697         ((info)->limit & 0xf0000) |                                             \
  698         ((info)->contents << LINUX_ENTRY_B_CONTENTS) |                          \
  699         (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) |     \
  700         (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) |         \
  701         (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) |       \
  702         ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) |                         \
  703         ((info)->useable << LINUX_ENTRY_B_USEABLE) |                            \
  704         ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000)
  705 
  706 #define LINUX_LDT_empty(info)           \
  707         ((info)->base_addr == 0 &&      \
  708         (info)->limit == 0 &&           \
  709         (info)->contents == 0 &&        \
  710         (info)->seg_not_present == 1 && \
  711         (info)->read_exec_only == 1 &&  \
  712         (info)->seg_32bit == 0 &&       \
  713         (info)->limit_in_pages == 0 &&  \
  714         (info)->useable == 0)
  715 
  716 /*
  717  * Macros for converting segments.
  718  * They do the same as those in arch/i386/kernel/process.c in Linux.
  719  */
  720 #define LINUX_GET_BASE(desc)                            \
  721         ((((desc)->a >> 16) & LINUX_LOWERWORD) |        \
  722         (((desc)->b << 16) & 0x00ff0000) |              \
  723         ((desc)->b & 0xff000000))
  724 
  725 #define LINUX_GET_LIMIT(desc)                   \
  726         (((desc)->a & LINUX_LOWERWORD) |        \
  727         ((desc)->b & 0xf0000))
  728 
  729 #define LINUX_GET_32BIT(desc)           \
  730         (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1)
  731 #define LINUX_GET_CONTENTS(desc)        \
  732         (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3)
  733 #define LINUX_GET_WRITABLE(desc)        \
  734         (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1)
  735 #define LINUX_GET_LIMIT_PAGES(desc)     \
  736         (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1)
  737 #define LINUX_GET_PRESENT(desc)         \
  738         (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1)
  739 #define LINUX_GET_USEABLE(desc)         \
  740         (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1)
  741 
  742 /* robust futexes */
  743 struct linux_robust_list {
  744         struct linux_robust_list        *next;
  745 };
  746 
  747 struct linux_robust_list_head {
  748         struct linux_robust_list        list;
  749         l_long                          futex_offset;
  750         struct linux_robust_list        *pending_list;
  751 };
  752 
  753 #endif /* !_I386_LINUX_H_ */

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