sys/fs/sysvbfs/sysvbfs.c

   1 /*      $NetBSD: sysvbfs.c,v 1.11 2008/04/29 18:18:08 ad Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by UCHIYAMA Yasushi.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: sysvbfs.c,v 1.11 2008/04/29 18:18:08 ad Exp $");
  34
  35 #include <sys/resource.h>
  36 #include <sys/param.h>
  37 #include <sys/vnode.h>
  38 #include <sys/mount.h>
  39 #include <sys/module.h>
  40 #include <miscfs/genfs/genfs.h>
  41 #include <miscfs/genfs/genfs_node.h>
  42 #include <fs/sysvbfs/sysvbfs.h>
  43
  44 MODULE(MODULE_CLASS_VFS, sysvbfs, NULL);
  45
  46 /* External interfaces */
  47
  48 int (**sysvbfs_vnodeop_p)(void *);      /* filled by getnewvnode (vnode.h) */
  49
  50 const struct vnodeopv_entry_desc sysvbfs_vnodeop_entries[] = {
  51         { &vop_default_desc, vn_default_error },
  52         { &vop_lookup_desc, sysvbfs_lookup },           /* lookup */
  53         { &vop_create_desc, sysvbfs_create },           /* create */
  54         { &vop_mknod_desc, genfs_eopnotsupp },          /* mknod */
  55         { &vop_open_desc, sysvbfs_open },               /* open */
  56         { &vop_close_desc, sysvbfs_close },             /* close */
  57         { &vop_access_desc, sysvbfs_access },           /* access */
  58         { &vop_getattr_desc, sysvbfs_getattr },         /* getattr */
  59         { &vop_setattr_desc, sysvbfs_setattr },         /* setattr */
  60         { &vop_read_desc, sysvbfs_read },               /* read */
  61         { &vop_write_desc, sysvbfs_write },             /* write */
  62         { &vop_fcntl_desc, genfs_fcntl },               /* fcntl */
  63         { &vop_ioctl_desc, genfs_enoioctl },            /* ioctl */
  64         { &vop_poll_desc, genfs_poll },                 /* poll */
  65         { &vop_kqfilter_desc, genfs_kqfilter },         /* kqfilter */
  66         { &vop_revoke_desc, genfs_revoke },             /* revoke */
  67         { &vop_mmap_desc, genfs_mmap },                 /* mmap */
  68         { &vop_fsync_desc, sysvbfs_fsync },             /* fsync */
  69         { &vop_seek_desc, genfs_seek },                 /* seek */
  70         { &vop_remove_desc, sysvbfs_remove },           /* remove */
  71         { &vop_link_desc, genfs_eopnotsupp },           /* link */
  72         { &vop_rename_desc, sysvbfs_rename },           /* rename */
  73         { &vop_mkdir_desc, genfs_eopnotsupp },          /* mkdir */
  74         { &vop_rmdir_desc, genfs_eopnotsupp },          /* rmdir */
  75         { &vop_symlink_desc, genfs_eopnotsupp },        /* symlink */
  76         { &vop_readdir_desc, sysvbfs_readdir },         /* readdir */
  77         { &vop_readlink_desc, genfs_eopnotsupp },       /* readlink */
  78         { &vop_abortop_desc, genfs_abortop },           /* abortop */
  79         { &vop_inactive_desc, sysvbfs_inactive },       /* inactive */
  80         { &vop_reclaim_desc, sysvbfs_reclaim },         /* reclaim */
  81         { &vop_lock_desc, genfs_lock },                 /* lock */
  82         { &vop_unlock_desc, genfs_unlock },             /* unlock */
  83         { &vop_bmap_desc, sysvbfs_bmap },               /* bmap */
  84         { &vop_strategy_desc, sysvbfs_strategy },       /* strategy */
  85         { &vop_print_desc, sysvbfs_print },             /* print */
  86         { &vop_islocked_desc, genfs_islocked },         /* islocked */
  87         { &vop_pathconf_desc, sysvbfs_pathconf },       /* pathconf */
  88         { &vop_advlock_desc, sysvbfs_advlock },         /* advlock */
  89         { &vop_bwrite_desc, vn_bwrite },                /* bwrite */
  90         { &vop_getpages_desc, genfs_getpages },         /* getpages */
  91         { &vop_putpages_desc, genfs_putpages },         /* putpages */
  92         { NULL, NULL }
  93 };
  94
  95 const struct vnodeopv_desc sysvbfs_vnodeop_opv_desc = {
  96         &sysvbfs_vnodeop_p,
  97         sysvbfs_vnodeop_entries
  98 };
  99
 100 const struct vnodeopv_desc *sysvbfs_vnodeopv_descs[] = {
 101         &sysvbfs_vnodeop_opv_desc,
 102         NULL,
 103 };
 104
 105 const struct genfs_ops sysvbfs_genfsops = {
 106         .gop_size = genfs_size,
 107         .gop_alloc = sysvbfs_gop_alloc,
 108         .gop_write = genfs_gop_write,
 109 };
 110
 111 struct vfsops sysvbfs_vfsops = {
 112         MOUNT_SYSVBFS,
 113         sizeof (struct sysvbfs_args),
 114         sysvbfs_mount,
 115         sysvbfs_start,
 116         sysvbfs_unmount,
 117         sysvbfs_root,
 118         (void *)eopnotsupp,     /* vfs_quotactl */
 119         sysvbfs_statvfs,
 120         sysvbfs_sync,
 121         sysvbfs_vget,
 122         sysvbfs_fhtovp,
 123         sysvbfs_vptofh,
 124         sysvbfs_init,
 125         sysvbfs_reinit,
 126         sysvbfs_done,
 127         NULL,                   /* vfs_mountroot */
 128         (int (*)(struct mount *, struct vnode *, struct timespec *))
 129             eopnotsupp,         /* snapshot */
 130         vfs_stdextattrctl,
 131         (void *)eopnotsupp,     /* vfs_suspendctl */
 132         genfs_renamelock_enter,
 133         genfs_renamelock_exit,
 134         (void *)eopnotsupp,
 135         sysvbfs_vnodeopv_descs,
 136         0,
 137         { NULL, NULL }
 138 };
 139
 140 static int
 141 sysvbfs_modcmd(modcmd_t cmd, void *arg)
 142 {
 143
 144         switch (cmd) {
 145         case MODULE_CMD_INIT:
 146                 return vfs_attach(&sysvbfs_vfsops);
 147         case MODULE_CMD_FINI:
 148                 return vfs_detach(&sysvbfs_vfsops);
 149         default:
 150                 return ENOTTY;
 151         }
 152 }