FreeBSD/Linux Kernel Cross Reference
sys/compat/freebsd/freebsd_file.c

     /*      $NetBSD: freebsd_file.c,v 1.31 2007/12/20 23:02:47 dsl Exp $    */
     
     /*
      * Copyright (c) 1995 Frank van der Linden
      * 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.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed for the NetBSD Project
     *      by Frank van der Linden
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
     *
     *      from: linux_file.c,v 1.3 1995/04/04 04:21:30 mycroft Exp
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: freebsd_file.c,v 1.31 2007/12/20 23:02:47 dsl Exp $");
    
    #if defined(_KERNEL_OPT)
    #include "fs_nfs.h"
    #endif
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/namei.h>
    #include <sys/proc.h>
    #include <sys/file.h>
    #include <sys/stat.h>
    #include <sys/filedesc.h>
    #include <sys/ioctl.h>
    #include <sys/kernel.h>
    #include <sys/mount.h>
    #include <sys/malloc.h>
    
    #include <sys/syscallargs.h>
    
    #include <compat/freebsd/freebsd_syscallargs.h>
    #include <compat/common/compat_util.h>
    #include <compat/sys/mount.h>
    
    #define ARRAY_LENGTH(array)     (sizeof(array)/sizeof(array[0]))
    
    static const char * convert_from_freebsd_mount_type(int);
    
    static const char *
    convert_from_freebsd_mount_type(int type)
    {
            static const char * const netbsd_mount_type[] = {
                    NULL,     /*  0 = MOUNT_NONE */
                    "ffs",    /*  1 = "Fast" Filesystem */
                    "nfs",    /*  2 = Network Filesystem */
                    "mfs",    /*  3 = Memory Filesystem */
                    "msdos",  /*  4 = MSDOS Filesystem */
                    "lfs",    /*  5 = Log-based Filesystem */
                    "lofs",   /*  6 = Loopback filesystem */
                    "fdesc",  /*  7 = File Descriptor Filesystem */
                    "portal", /*  8 = Portal Filesystem */
                    "null",   /*  9 = Minimal Filesystem Layer */
                    "umap",   /* 10 = User/Group Identifier Remapping Filesystem */
                    "kernfs", /* 11 = Kernel Information Filesystem */
                    "procfs", /* 12 = /proc Filesystem */
                    "afs",    /* 13 = Andrew Filesystem */
                    "cd9660", /* 14 = ISO9660 (aka CDROM) Filesystem */
                    "union",  /* 15 = Union (translucent) Filesystem */
                    NULL,     /* 16 = "devfs" - existing device Filesystem */
    #if 0 /* These filesystems don't exist in FreeBSD */
                    "adosfs", /* ?? = AmigaDOS Filesystem */
    #endif
            };
    
            if (type < 0 || type >= ARRAY_LENGTH(netbsd_mount_type))
                    return (NULL);
            return (netbsd_mount_type[type]);
    }
    
    int
    freebsd_sys_mount(struct lwp *l, const struct freebsd_sys_mount_args *uap, register_t *retval)
    {
            /* {
                   syscallarg(int) type;
                   syscallarg(char *) path;
                   syscallarg(int) flags;
                   syscallarg(void *) data;
           } */
           const char *type;
           struct vfsops *vfsops;
           register_t dummy;
   
           if ((type = convert_from_freebsd_mount_type(SCARG(uap, type))) == NULL)
                   return ENODEV;
           vfsops = vfs_getopsbyname(type);
           if (vfsops == NULL)
                   return ENODEV;
   
           return do_sys_mount(l, vfsops, NULL, SCARG(uap, path),
               SCARG(uap, flags), SCARG(uap, data), UIO_USERSPACE, 0, &dummy);
   }
   
   /* XXX - UNIX domain: int freebsd_sys_bind(int s, void *name, int namelen); */
   /* XXX - UNIX domain: int freebsd_sys_connect(int s, void *name, int namelen); */

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