1 /* $NetBSD: sysvbfs.c,v 1.12 2008/05/10 02:26:09 rumble 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 1.12 2008/05/10 02:26:09 rumble 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 } 153