2 * Copyright (c) 2007 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/sys/vfs/userfs/userfs_inode.c,v 1.1 2007/08/13 17:49:17 dillon Exp $
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/vnode.h>
41 #include <sys/mount.h>
42 #include <sys/malloc.h>
43 #include <sys/syslink.h>
44 #include <sys/syslink_msg2.h>
45 #include <sys/syslink_vfs.h>
48 static MALLOC_DEFINE(M_USERFSINODE, "userfs-inode", "userfs inode");
51 user_vop_inactive(struct vop_inactive_args *ap)
57 user_vop_reclaim(struct vop_reclaim_args *ap)
59 struct user_mount *ump;
60 struct user_inode *ip;
64 if ((ip = vp->v_data) != NULL) {
67 userfs_ino_rb_tree_RB_REMOVE(&ump->rb_root, ip);
70 kfree(ip, M_USERFSINODE);
76 user_vfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
78 struct user_mount *ump = (void *)mp->mnt_data;
79 struct user_inode *ip;
84 kprintf("LOOKUP ump %p ino %lld\n", ump, ino);
85 ip = userfs_ino_rb_tree_RB_LOOKUP(&ump->rb_root, ino);
89 vn_lock(vp, LK_EXCLUSIVE|LK_RETRY);
90 if (vp->v_flag & VRECLAIMED) {
99 * Locate the inode on-disk
103 * Create a vnode and in-memory inode.
105 error = user_getnewvnode(mp, vpp, ino, VDIR);
112 * Create a vnode and in-memory inode. EAGAIN is returned if we race the
113 * creation of the in-memory inode.
115 * A locked, referenced vnode is returned in *vpp if no error occurs.
118 user_getnewvnode(struct mount *mp, struct vnode **vpp, ino_t ino,
121 struct user_inode *ip;
122 struct user_mount *ump;
126 error = getnewvnode(VT_USERFS, mp, vpp, 0, LK_CANRECURSE);
130 ip = kmalloc(sizeof(*ip), M_USERFSINODE, M_WAITOK|M_ZERO);
133 ump = (void *)mp->mnt_data;
136 * Snap together the new vnode/inode and determine if we have
139 if (userfs_ino_rb_tree_RB_LOOKUP(&ump->rb_root, ino)) {
140 kfree(ip, M_USERFSINODE);
150 userfs_ino_rb_tree_RB_INSERT(&ump->rb_root, ip);