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      1 /*	$NetBSD: v7fs_extern.c,v 1.9 2021/07/18 23:56:13 dholland Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2004, 2011 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: v7fs_extern.c,v 1.9 2021/07/18 23:56:13 dholland Exp $");
     34 
     35 #if defined _KERNEL_OPT
     36 #include "opt_v7fs.h"
     37 #endif
     38 #include <sys/resource.h>
     39 #include <sys/param.h>
     40 #include <sys/vnode.h>
     41 #include <sys/mount.h>
     42 #include <sys/module.h>
     43 
     44 #include <miscfs/fifofs/fifo.h>
     45 #include <miscfs/genfs/genfs.h>
     46 #include <miscfs/genfs/genfs_node.h>
     47 
     48 #include <fs/v7fs/v7fs_extern.h>
     49 
     50 MODULE(MODULE_CLASS_VFS, v7fs, NULL);
     51 
     52 /* External interfaces */
     53 
     54 int (**v7fs_vnodeop_p)(void *);	/* filled by getnewvnode (vnode.h) */
     55 
     56 const struct vnodeopv_entry_desc v7fs_vnodeop_entries[] = {
     57 	{ &vop_default_desc, vn_default_error },
     58 	{ &vop_parsepath_desc, genfs_parsepath },	/* parsepath */
     59 	{ &vop_lookup_desc, v7fs_lookup },		/* lookup */
     60 	{ &vop_create_desc, v7fs_create },		/* create */
     61 	{ &vop_mknod_desc, v7fs_mknod },		/* mknod */
     62 	{ &vop_open_desc, v7fs_open },			/* open */
     63 	{ &vop_close_desc, v7fs_close },		/* close */
     64 	{ &vop_access_desc, v7fs_access },		/* access */
     65 	{ &vop_accessx_desc, genfs_accessx },		/* accessx */
     66 	{ &vop_getattr_desc, v7fs_getattr },		/* getattr */
     67 	{ &vop_setattr_desc, v7fs_setattr },		/* setattr */
     68 	{ &vop_read_desc, v7fs_read },			/* read */
     69 	{ &vop_write_desc, v7fs_write },		/* write */
     70 	{ &vop_fallocate_desc, genfs_eopnotsupp },	/* fallocate */
     71 	{ &vop_fdiscard_desc, genfs_eopnotsupp },	/* fdiscard */
     72 	{ &vop_fcntl_desc, genfs_fcntl },		/* fcntl */
     73 	{ &vop_ioctl_desc, genfs_enoioctl },		/* ioctl */
     74 	{ &vop_poll_desc, genfs_poll },			/* poll */
     75 	{ &vop_kqfilter_desc, genfs_kqfilter },		/* kqfilter */
     76 	{ &vop_revoke_desc, genfs_revoke },		/* revoke */
     77 	{ &vop_mmap_desc, genfs_mmap },			/* mmap */
     78 	{ &vop_fsync_desc, v7fs_fsync },		/* fsync */
     79 	{ &vop_seek_desc, genfs_seek },			/* seek */
     80 	{ &vop_remove_desc, v7fs_remove },		/* remove */
     81 	{ &vop_link_desc, v7fs_link },			/* link */
     82 	{ &vop_rename_desc, v7fs_rename },		/* rename */
     83 	{ &vop_mkdir_desc, v7fs_mkdir },		/* mkdir */
     84 	{ &vop_rmdir_desc, v7fs_rmdir },		/* rmdir */
     85 	{ &vop_symlink_desc, v7fs_symlink },		/* symlink */
     86 	{ &vop_readdir_desc, v7fs_readdir },		/* readdir */
     87 	{ &vop_readlink_desc, v7fs_readlink },		/* readlink */
     88 	{ &vop_abortop_desc, genfs_abortop },		/* abortop */
     89 	{ &vop_inactive_desc, v7fs_inactive },		/* inactive */
     90 	{ &vop_reclaim_desc, v7fs_reclaim },		/* reclaim */
     91 	{ &vop_lock_desc, genfs_lock },			/* lock */
     92 	{ &vop_unlock_desc, genfs_unlock },		/* unlock */
     93 	{ &vop_bmap_desc, v7fs_bmap },			/* bmap */
     94 	{ &vop_strategy_desc, v7fs_strategy },		/* strategy */
     95 	{ &vop_print_desc, v7fs_print },		/* print */
     96 	{ &vop_islocked_desc, genfs_islocked },		/* islocked */
     97 	{ &vop_pathconf_desc, v7fs_pathconf },		/* pathconf */
     98 	{ &vop_advlock_desc, v7fs_advlock },		/* advlock */
     99 	{ &vop_bwrite_desc, vn_bwrite },		/* bwrite */
    100 	{ &vop_getpages_desc, genfs_getpages },		/* getpages */
    101 	{ &vop_putpages_desc, genfs_putpages },		/* putpages */
    102 	{ NULL, NULL }
    103 };
    104 
    105 
    106 int (**v7fs_specop_p)(void *);
    107 const struct vnodeopv_entry_desc v7fs_specop_entries[] = {
    108 	{ &vop_default_desc, vn_default_error },
    109 	GENFS_SPECOP_ENTRIES,
    110 	{ &vop_close_desc, spec_close },		/* close */
    111 	{ &vop_access_desc, v7fs_access },		/* access */
    112 	{ &vop_accessx_desc, genfs_accessx },		/* accessx */
    113 	{ &vop_getattr_desc, v7fs_getattr },		/* getattr */
    114 	{ &vop_setattr_desc, v7fs_setattr },		/* setattr */
    115 	{ &vop_read_desc, spec_read },			/* read */
    116 	{ &vop_write_desc, spec_write },		/* write */
    117 	{ &vop_fcntl_desc, genfs_fcntl },		/* fcntl */
    118 	{ &vop_fsync_desc, spec_fsync },		/* fsync */
    119 	{ &vop_inactive_desc, v7fs_inactive },		/* inactive */
    120 	{ &vop_reclaim_desc, v7fs_reclaim },		/* reclaim */
    121 	{ &vop_lock_desc, genfs_lock },			/* lock */
    122 	{ &vop_unlock_desc, genfs_unlock },		/* unlock */
    123 	{ &vop_print_desc, spec_print },		/* print */
    124 	{ &vop_islocked_desc, genfs_islocked },		/* islocked */
    125 	{ &vop_bwrite_desc, vn_bwrite },		/* bwrite */
    126 	{ NULL, NULL }
    127 };
    128 
    129 int (**v7fs_fifoop_p)(void *);
    130 const struct vnodeopv_entry_desc v7fs_fifoop_entries[] = {
    131 	{ &vop_default_desc, vn_default_error },
    132 	GENFS_FIFOOP_ENTRIES,
    133 	{ &vop_close_desc, vn_fifo_bypass },		/* close */
    134 	{ &vop_access_desc, v7fs_access },		/* access */
    135 	{ &vop_accessx_desc, genfs_accessx },		/* accessx */
    136 	{ &vop_getattr_desc, v7fs_getattr },		/* getattr */
    137 	{ &vop_setattr_desc, v7fs_setattr },		/* setattr */
    138 	{ &vop_read_desc, vn_fifo_bypass },		/* read */
    139 	{ &vop_write_desc, vn_fifo_bypass },		/* write */
    140 	{ &vop_fcntl_desc, genfs_fcntl },		/* fcntl */
    141 	{ &vop_fsync_desc, vn_fifo_bypass },		/* fsync */
    142 	{ &vop_inactive_desc, v7fs_inactive },		/* inactive */
    143 	{ &vop_reclaim_desc, v7fs_reclaim },		/* reclaim */
    144 	{ &vop_lock_desc, vn_fifo_bypass },		/* lock */
    145 	{ &vop_unlock_desc, vn_fifo_bypass },		/* unlock */
    146 	{ &vop_strategy_desc, vn_fifo_bypass },		/* strategy */
    147 	{ &vop_print_desc, vn_fifo_bypass },		/* print */
    148 	{ &vop_islocked_desc, vn_fifo_bypass },		/* islocked */
    149 	{ &vop_bwrite_desc, vn_bwrite },		/* bwrite */
    150 	{ NULL, NULL }
    151 };
    152 
    153 const struct vnodeopv_desc v7fs_fifoop_opv_desc = {
    154 	&v7fs_fifoop_p,
    155 	v7fs_fifoop_entries
    156 };
    157 
    158 const struct vnodeopv_desc v7fs_vnodeop_opv_desc = {
    159 	&v7fs_vnodeop_p,
    160 	v7fs_vnodeop_entries
    161 };
    162 
    163 const struct vnodeopv_desc v7fs_specop_opv_desc = {
    164 	&v7fs_specop_p,
    165 	v7fs_specop_entries
    166 };
    167 
    168 const struct vnodeopv_desc *v7fs_vnodeopv_descs[] = {
    169 	&v7fs_vnodeop_opv_desc,
    170 	&v7fs_specop_opv_desc,
    171 	&v7fs_fifoop_opv_desc,
    172 	NULL,
    173 };
    174 
    175 const struct genfs_ops v7fs_genfsops = {
    176 	.gop_size = genfs_size,
    177 	.gop_alloc = v7fs_gop_alloc,
    178 	.gop_write = genfs_gop_write,
    179 	.gop_putrange = genfs_gop_putrange,
    180 };
    181 
    182 struct vfsops v7fs_vfsops = {
    183 	.vfs_name = MOUNT_V7FS,
    184 	.vfs_min_mount_data = sizeof(struct v7fs_args),
    185 	.vfs_mount = v7fs_mount,
    186 	.vfs_start = v7fs_start,
    187 	.vfs_unmount = v7fs_unmount,
    188 	.vfs_root = v7fs_root,
    189 	.vfs_quotactl = (void *)eopnotsupp,
    190 	.vfs_statvfs = v7fs_statvfs,
    191 	.vfs_sync = v7fs_sync,
    192 	.vfs_vget = v7fs_vget,
    193 	.vfs_loadvnode = v7fs_loadvnode,
    194 	.vfs_fhtovp = v7fs_fhtovp,
    195 	.vfs_vptofh = v7fs_vptofh,
    196 	.vfs_init = v7fs_init,
    197 	.vfs_reinit = v7fs_reinit,
    198 	.vfs_done = v7fs_done,
    199 	.vfs_mountroot = v7fs_mountroot,
    200 	.vfs_snapshot = (void *)eopnotsupp,
    201 	.vfs_extattrctl = vfs_stdextattrctl,
    202 	.vfs_suspendctl = genfs_suspendctl,
    203 	.vfs_renamelock_enter = genfs_renamelock_enter,
    204 	.vfs_renamelock_exit = genfs_renamelock_exit,
    205 	.vfs_fsync = (void *)eopnotsupp,
    206 	.vfs_opv_descs = v7fs_vnodeopv_descs
    207 };
    208 
    209 static int
    210 v7fs_modcmd(modcmd_t cmd, void *arg)
    211 {
    212 
    213 	switch (cmd) {
    214 	case MODULE_CMD_INIT:
    215 		return vfs_attach(&v7fs_vfsops);
    216 	case MODULE_CMD_FINI:
    217 		return vfs_detach(&v7fs_vfsops);
    218 	default:
    219 		return ENOTTY;
    220 	}
    221 }
    222