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Annotation of sys/xfs/xfs_fs.h, Revision 1.1.1.1

1.1       nbrk        1: /*
                      2:  * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
                      3:  * (Royal Institute of Technology, Stockholm, Sweden).
                      4:  * All rights reserved.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  *
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  *
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  *
                     17:  * 3. Neither the name of the Institute nor the names of its contributors
                     18:  *    may be used to endorse or promote products derived from this software
                     19:  *    without specific prior written permission.
                     20:  *
                     21:  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
                     22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
                     25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     31:  * SUCH DAMAGE.
                     32:  */
                     33:
                     34: /* $arla: xfs_fs.h,v 1.22 2002/12/19 09:49:19 lha Exp $ */
                     35:
                     36: #ifndef _xfs_h
                     37: #define _xfs_h
                     38:
                     39: #include <sys/types.h>
                     40:
                     41: #include <xfs/xfs_common.h>
                     42: #include <xfs/xfs_node.h>
                     43: #include <xfs/xfs_attr.h>
                     44:
                     45: #define NNNPFS 2 /* maximal number of filesystems on a single device */
                     46:
                     47: /*
                     48:  * Filesystem struct.
                     49:  */
                     50:
                     51: struct xfs {
                     52:     u_int status;                     /* Inited, opened or mounted */
                     53: #define NNPFS_MOUNTED  0x1
                     54:     struct mount *mp;
                     55:     struct xfs_node *root;
                     56:     u_int nnodes;
                     57:     int fd;
                     58:     struct xfs_nodelist_head nodehead;
                     59: };
                     60:
                     61: #ifdef __osf__
                     62: #ifdef HAVE_STRUCT_MOUNT_M_INFO
                     63: #define VFS_TO_NNPFS(v)      ((struct xfs *) ((v)->m_info))
                     64: #else
                     65: #define VFS_TO_NNPFS(v)      ((struct xfs *) ((v)->m_data))
                     66: #endif
                     67: #else
                     68: #define VFS_TO_NNPFS(v)      ((struct xfs *) ((v)->mnt_data))
                     69: #endif
                     70: #define NNPFS_TO_VFS(x)      ((x)->mp)
                     71:
                     72: #define NNPFS_FROM_VNODE(vp) VFS_TO_NNPFS((vp)->v_mount)
                     73: #define NNPFS_FROM_XNODE(xp) NNPFS_FROM_VNODE(XNODE_TO_VNODE(xp))
                     74:
                     75: extern struct xfs xfs[];
                     76:
                     77: extern struct vnodeops xfs_vnodeops;
                     78:
                     79: int new_xfs_node(struct xfs *, struct xfs_msg_node *, struct xfs_node **,
                     80:                 d_thread_t *);
                     81: void free_xfs_node(struct xfs_node *);
                     82: int free_all_xfs_nodes(struct xfs *, int, int);
                     83:
                     84: int xfs_dnlc_enter(struct vnode *, xfs_componentname *, struct vnode *);
                     85: int xfs_dnlc_enter_name(struct vnode *, const char *, struct vnode *);
                     86: void xfs_dnlc_purge_mp(struct mount *);
                     87: void xfs_dnlc_purge(struct vnode *);
                     88: int xfs_dnlc_lookup(struct vnode *, xfs_componentname *, struct vnode **);
                     89: int xfs_dnlc_lookup_name(struct vnode *, const char *, struct vnode **);
                     90:
                     91: void vattr2xfs_attr(const struct vattr *, struct xfs_attr *);
                     92: void xfs_attr2vattr(const struct xfs_attr *, struct vattr *, int);
                     93:
                     94: int xfs_has_pag(const struct xfs_node *, xfs_pag_t);
                     95:
                     96: #endif                                /* _xfs_h */