10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*11185SSean.McEnroe@Sun.COM * Common Development and Distribution License (the "License"). 6*11185SSean.McEnroe@Sun.COM * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 210Sstevel@tonic-gate /* 22*11185SSean.McEnroe@Sun.COM * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 230Sstevel@tonic-gate * Use is subject to license terms. 240Sstevel@tonic-gate */ 250Sstevel@tonic-gate 260Sstevel@tonic-gate /* 270Sstevel@tonic-gate * Loop-back file information structure. 280Sstevel@tonic-gate */ 290Sstevel@tonic-gate 300Sstevel@tonic-gate #ifndef _SYS_FS_LOFS_NODE_H 310Sstevel@tonic-gate #define _SYS_FS_LOFS_NODE_H 320Sstevel@tonic-gate 330Sstevel@tonic-gate #include <sys/fs/lofs_info.h> 340Sstevel@tonic-gate 350Sstevel@tonic-gate #ifdef __cplusplus 360Sstevel@tonic-gate extern "C" { 370Sstevel@tonic-gate #endif 380Sstevel@tonic-gate 390Sstevel@tonic-gate /* 400Sstevel@tonic-gate * The lnode is the "inode" for loop-back files. It contains 410Sstevel@tonic-gate * all the information necessary to handle loop-back file on the 420Sstevel@tonic-gate * client side. 430Sstevel@tonic-gate */ 440Sstevel@tonic-gate typedef struct lnode { 450Sstevel@tonic-gate struct lnode *lo_next; /* link for hash chain */ 460Sstevel@tonic-gate struct vnode *lo_vp; /* pointer to real vnode */ 47324Sowenr uint_t lo_looping; /* looping flags (see below) */ 480Sstevel@tonic-gate struct vnode *lo_vnode; /* place holder vnode for file */ 490Sstevel@tonic-gate } lnode_t; 500Sstevel@tonic-gate 510Sstevel@tonic-gate /* 52324Sowenr * Flags used when looping has been detected. 53324Sowenr */ 54324Sowenr #define LO_LOOPING 0x01 /* Looping detected */ 55324Sowenr #define LO_AUTOLOOP 0x02 /* Autonode looping detected */ 56324Sowenr 57324Sowenr /* 58324Sowenr * Flag passed to makelonode(). 59324Sowenr */ 60324Sowenr #define LOF_FORCE 0x1 /* Force creation of new lnode */ 61324Sowenr 62324Sowenr /* 630Sstevel@tonic-gate * Convert between vnode and lnode 640Sstevel@tonic-gate */ 650Sstevel@tonic-gate #define ltov(lp) (((lp)->lo_vnode)) 660Sstevel@tonic-gate #define vtol(vp) ((struct lnode *)((vp)->v_data)) 670Sstevel@tonic-gate #define realvp(vp) (vtol(vp)->lo_vp) 680Sstevel@tonic-gate 690Sstevel@tonic-gate #ifdef _KERNEL 70324Sowenr extern vnode_t *makelonode(vnode_t *, struct loinfo *, int); 710Sstevel@tonic-gate extern void freelonode(lnode_t *); 720Sstevel@tonic-gate #endif /* _KERNEL */ 730Sstevel@tonic-gate 740Sstevel@tonic-gate #ifdef __cplusplus 750Sstevel@tonic-gate } 760Sstevel@tonic-gate #endif 770Sstevel@tonic-gate 780Sstevel@tonic-gate #endif /* _SYS_FS_LOFS_NODE_H */ 79