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

     /*-
      * Copyright (c) 2015 Dmitry Chagin
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _LINUX_MI_H_
    #define _LINUX_MI_H_
    
    #include <sys/queue.h>
    
    #define LINUX_IFHWADDRLEN       6
    #define LINUX_IFNAMSIZ          16
    
    /*
     * Criteria for interface name translation
     */
    #define IFP_IS_ETH(ifp)         (ifp->if_type == IFT_ETHER)
    #define IFP_IS_LOOP(ifp)        (ifp->if_type == IFT_LOOP)
    
    struct l_sockaddr {
            unsigned short  sa_family;
            char            sa_data[14];
    };
    
    #define LINUX_ARPHRD_ETHER      1
    #define LINUX_ARPHRD_LOOPBACK   772
    
    /*
     * Supported address families
     */
    #define LINUX_AF_UNSPEC         0
    #define LINUX_AF_UNIX           1
    #define LINUX_AF_INET           2
    #define LINUX_AF_AX25           3
    #define LINUX_AF_IPX            4
    #define LINUX_AF_APPLETALK      5
    #define LINUX_AF_INET6          10
    #define LINUX_AF_NETLINK        16
    
    #define LINUX_NETLINK_ROUTE             0
    #define LINUX_NETLINK_SOCK_DIAG         4
    #define LINUX_NETLINK_NFLOG             5
    #define LINUX_NETLINK_SELINUX           7
    #define LINUX_NETLINK_AUDIT             9
    #define LINUX_NETLINK_FIB_LOOKUP        10
    #define LINUX_NETLINK_NETFILTER         12
    #define LINUX_NETLINK_KOBJECT_UEVENT    15
    
    /*
     * net device flags
     */
    #define LINUX_IFF_UP            0x0001
    #define LINUX_IFF_BROADCAST     0x0002
    #define LINUX_IFF_DEBUG         0x0004
    #define LINUX_IFF_LOOPBACK      0x0008
    #define LINUX_IFF_POINTOPOINT   0x0010
    #define LINUX_IFF_NOTRAILERS    0x0020
    #define LINUX_IFF_RUNNING       0x0040
    #define LINUX_IFF_NOARP         0x0080
    #define LINUX_IFF_PROMISC       0x0100
    #define LINUX_IFF_ALLMULTI      0x0200
    #define LINUX_IFF_MASTER        0x0400
    #define LINUX_IFF_SLAVE         0x0800
    #define LINUX_IFF_MULTICAST     0x1000
    #define LINUX_IFF_PORTSEL       0x2000
    #define LINUX_IFF_AUTOMEDIA     0x4000
    #define LINUX_IFF_DYNAMIC       0x8000
    
    /* sigaltstack */
    #define LINUX_SS_ONSTACK        1
    #define LINUX_SS_DISABLE        2
    
    int linux_to_bsd_sigaltstack(int lsa);
    int bsd_to_linux_sigaltstack(int bsa);
    
    /* sigset */
   typedef struct {
           uint64_t        __mask;
   } l_sigset_t;
   
   /* primitives to manipulate sigset_t */
   #define LINUX_SIGEMPTYSET(set)          (set).__mask = 0
   #define LINUX_SIGISMEMBER(set, sig)     (1UL & ((set).__mask >> _SIG_IDX(sig)))
   #define LINUX_SIGADDSET(set, sig)       (set).__mask |= 1UL << _SIG_IDX(sig)
   
   void linux_to_bsd_sigset(l_sigset_t *, sigset_t *);
   void bsd_to_linux_sigset(sigset_t *, l_sigset_t *);
   
   /* signaling */
   #define LINUX_SIGHUP            1
   #define LINUX_SIGINT            2
   #define LINUX_SIGQUIT           3
   #define LINUX_SIGILL            4
   #define LINUX_SIGTRAP           5
   #define LINUX_SIGABRT           6
   #define LINUX_SIGIOT            LINUX_SIGABRT
   #define LINUX_SIGBUS            7
   #define LINUX_SIGFPE            8
   #define LINUX_SIGKILL           9
   #define LINUX_SIGUSR1           10
   #define LINUX_SIGSEGV           11
   #define LINUX_SIGUSR2           12
   #define LINUX_SIGPIPE           13
   #define LINUX_SIGALRM           14
   #define LINUX_SIGTERM           15
   #define LINUX_SIGSTKFLT         16
   #define LINUX_SIGCHLD           17
   #define LINUX_SIGCONT           18
   #define LINUX_SIGSTOP           19
   #define LINUX_SIGTSTP           20
   #define LINUX_SIGTTIN           21
   #define LINUX_SIGTTOU           22
   #define LINUX_SIGURG            23
   #define LINUX_SIGXCPU           24
   #define LINUX_SIGXFSZ           25
   #define LINUX_SIGVTALRM         26
   #define LINUX_SIGPROF           27
   #define LINUX_SIGWINCH          28
   #define LINUX_SIGIO             29
   #define LINUX_SIGPOLL           LINUX_SIGIO
   #define LINUX_SIGPWR            30
   #define LINUX_SIGSYS            31
   #define LINUX_SIGTBLSZ          31
   #define LINUX_SIGRTMIN          32
   #define LINUX_SIGRTMAX          64
   
   #define LINUX_SIG_VALID(sig)    ((sig) <= LINUX_SIGRTMAX && (sig) > 0)
   
   int linux_to_bsd_signal(int sig);
   int bsd_to_linux_signal(int sig);
   
   extern LIST_HEAD(futex_list, futex) futex_list;
   extern struct mtx futex_mtx;
   
   void linux_dev_shm_create(void);
   void linux_dev_shm_destroy(void);
   
   /*
    * mask=0 is not sensible for this application, so it will be taken to mean
    * a mask equivalent to the value.  Otherwise, (word & mask) == value maps to
    * (word & ~mask) | value in a bitfield for the platform we're converting to.
    */
   struct bsd_to_linux_bitmap {
           int     bsd_mask;
           int     bsd_value;
           int     linux_mask;
           int     linux_value;
   };
   
   int bsd_to_linux_bits_(int value, struct bsd_to_linux_bitmap *bitmap,
       size_t mapcnt, int no_value);
   int linux_to_bsd_bits_(int value, struct bsd_to_linux_bitmap *bitmap,
       size_t mapcnt, int no_value);
   
   /*
    * These functions are used for simplification of BSD <-> Linux bit conversions.
    * Given `value`, a bit field, these functions will walk the given bitmap table
    * and set the appropriate bits for the target platform.  If any bits were
    * successfully converted, then the return value is the equivalent of value
    * represented with the bit values appropriate for the target platform.
    * Otherwise, the value supplied as `no_value` is returned.
    */
   #define bsd_to_linux_bits(_val, _bmap, _noval) \
       bsd_to_linux_bits_((_val), (_bmap), nitems((_bmap)), (_noval))
   #define linux_to_bsd_bits(_val, _bmap, _noval) \
       linux_to_bsd_bits_((_val), (_bmap), nitems((_bmap)), (_noval))
   
   /*
    * Easy mapping helpers.  BITMAP_EASY_LINUX represents a single bit to be
    * translated, and the FreeBSD and Linux values are supplied.  BITMAP_1t1_LINUX
    * is the extreme version of this, where not only is it a single bit, but the
    * name of the macro used to represent the Linux version of a bit literally has
    * LINUX_ prepended to the normal name.
    */
   #define BITMAP_EASY_LINUX(_name, _linux_name)   \
           {                                       \
                   .bsd_value = (_name),           \
                   .linux_value = (_linux_name),   \
           }
   #define BITMAP_1t1_LINUX(_name) BITMAP_EASY_LINUX(_name, LINUX_##_name)
   
   int bsd_to_linux_errno(int error);
   void linux_check_errtbl(void);
   
   #endif /* _LINUX_MI_H_ */

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