1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_MNTFS_MNTDATA_H 28 #define _SYS_MNTFS_MNTDATA_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/vnode.h> 33 #include <sys/poll.h> 34 35 #ifdef __cplusplus 36 extern "C" { 37 #endif 38 39 typedef struct mntsnap { 40 char *mnts_text; /* base address of text in user addr space */ 41 size_t mnts_textsize; /* size of mapped text */ 42 char *mnts_metadata; /* base address of metadata in user space */ 43 size_t mnts_metasize; /* size of mapped metadata */ 44 uint_t mnts_count; /* number of mounts in snapshot */ 45 timespec_t mnts_time; /* time when snapshot was taken */ 46 } mntsnap_t; 47 48 typedef struct mntnode { 49 uint_t mnt_flags; /* flags */ 50 vnode_t *mnt_mountvp; /* vnode mounted on */ 51 vnode_t *mnt_vnode; /* vnode for this mntnode */ 52 mntsnap_t mnt_read; /* Data for read() */ 53 mntsnap_t mnt_ioctl; /* Data for ioctl() */ 54 uint_t mnt_offset; /* offset within ioctl() snapshot */ 55 } mntnode_t; 56 57 struct zone; 58 59 typedef struct mntdata { 60 struct zone *mnt_zone; /* zone for mount point */ 61 uint_t mnt_nopen; /* count of vnodes open */ 62 size_t mnt_size; /* latest snapshot size for mount */ 63 struct mntnode mnt_node; /* embedded mntnode */ 64 } mntdata_t; 65 66 /* 67 * Conversion macros. 68 */ 69 #define VTOM(vp) ((struct mntnode *)(vp)->v_data) 70 #define MTOV(pnp) ((pnp)->mnt_vnode) 71 #define MTOD(pnp) ((struct mntdata *)MTOV(pnp)->v_vfsp->vfs_data) 72 73 #if defined(_KERNEL) 74 75 /* 76 * Values for mnt_flags. 77 */ 78 #define MNT_SHOWHIDDEN 0x1 /* Hack to show all mounts, even MS_NOMNTTAB */ 79 80 extern struct vnodeops *mntvnodeops; 81 extern void mntfs_getmntopts(struct vfs *, char **, size_t *); 82 83 #endif /* _KERNEL */ 84 85 #ifdef __cplusplus 86 } 87 #endif 88 89 #endif /* _SYS_MNTFS_MNTDATA_H */ 90