sys/compat/freebsd/freebsd_file.c

   1 /*      $NetBSD: freebsd_file.c,v 1.30 2007/12/08 18:35:58 dsl Exp $    */
   2
   3 /*
   4  * Copyright (c) 1995 Frank van der Linden
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed for the NetBSD Project
  18  *      by Frank van der Linden
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  *      from: linux_file.c,v 1.3 1995/04/04 04:21:30 mycroft Exp
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: freebsd_file.c,v 1.30 2007/12/08 18:35:58 dsl Exp $");
  38
  39 #if defined(_KERNEL_OPT)
  40 #include "fs_nfs.h"
  41 #endif
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/namei.h>
  46 #include <sys/proc.h>
  47 #include <sys/file.h>
  48 #include <sys/stat.h>
  49 #include <sys/filedesc.h>
  50 #include <sys/ioctl.h>
  51 #include <sys/kernel.h>
  52 #include <sys/mount.h>
  53 #include <sys/malloc.h>
  54
  55 #include <sys/syscallargs.h>
  56
  57 #include <compat/freebsd/freebsd_syscallargs.h>
  58 #include <compat/common/compat_util.h>
  59 #include <compat/sys/mount.h>
  60
  61 #define ARRAY_LENGTH(array)     (sizeof(array)/sizeof(array[0]))
  62
  63 static const char * convert_from_freebsd_mount_type(int);
  64
  65 static const char *
  66 convert_from_freebsd_mount_type(int type)
  67 {
  68         static const char * const netbsd_mount_type[] = {
  69                 NULL,     /*  0 = MOUNT_NONE */
  70                 "ffs",    /*  1 = "Fast" Filesystem */
  71                 "nfs",    /*  2 = Network Filesystem */
  72                 "mfs",    /*  3 = Memory Filesystem */
  73                 "msdos",  /*  4 = MSDOS Filesystem */
  74                 "lfs",    /*  5 = Log-based Filesystem */
  75                 "lofs",   /*  6 = Loopback filesystem */
  76                 "fdesc",  /*  7 = File Descriptor Filesystem */
  77                 "portal", /*  8 = Portal Filesystem */
  78                 "null",   /*  9 = Minimal Filesystem Layer */
  79                 "umap",   /* 10 = User/Group Identifier Remapping Filesystem */
  80                 "kernfs", /* 11 = Kernel Information Filesystem */
  81                 "procfs", /* 12 = /proc Filesystem */
  82                 "afs",    /* 13 = Andrew Filesystem */
  83                 "cd9660", /* 14 = ISO9660 (aka CDROM) Filesystem */
  84                 "union",  /* 15 = Union (translucent) Filesystem */
  85                 NULL,     /* 16 = "devfs" - existing device Filesystem */
  86 #if 0 /* These filesystems don't exist in FreeBSD */
  87                 "adosfs", /* ?? = AmigaDOS Filesystem */
  88 #endif
  89         };
  90
  91         if (type < 0 || type >= ARRAY_LENGTH(netbsd_mount_type))
  92                 return (NULL);
  93         return (netbsd_mount_type[type]);
  94 }
  95
  96 int
  97 freebsd_sys_mount(struct lwp *l, const struct freebsd_sys_mount_args *uap, register_t *retval)
  98 {
  99         /* {
 100                 syscallarg(int) type;
 101                 syscallarg(char *) path;
 102                 syscallarg(int) flags;
 103                 syscallarg(void *) data;
 104         } */
 105         const char *type;
 106         struct vfsops *vfsops;
 107         register_t dummy;
 108
 109         if ((type = convert_from_freebsd_mount_type(SCARG(uap, type))) == NULL)
 110                 return ENODEV;
 111         vfsops = vfs_getopsbyname(type);
 112         if (vfsops == NULL)
 113                 return ENODEV;
 114
 115         return do_sys_mount(l, vfsops, NULL, SCARG(uap, path),
 116             SCARG(uap, flags), SCARG(uap, data), UIO_USERSPACE, 0, &dummy);
 117 }
 118
 119 /* XXX - UNIX domain: int freebsd_sys_bind(int s, void *name, int namelen); */
 120 /* XXX - UNIX domain: int freebsd_sys_connect(int s, void *name, int namelen); */