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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_MNTFS_MNTDATA_H 27 #define _SYS_MNTFS_MNTDATA_H 28 29 #include <sys/vnode.h> 30 #include <sys/poll.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 typedef struct mntsnap { 37 char *mnts_text; /* base address of text in user addr space */ 38 size_t mnts_textsize; /* size of mapped text */ 39 char *mnts_metadata; /* base address of metadata in user space */ 40 size_t mnts_metasize; /* size of mapped metadata */ 41 uint_t mnts_count; /* number of mounts in snapshot */ 42 timespec_t mnts_time; /* time when snapshot was taken */ 43 } mntsnap_t; 44 45 typedef struct mntnode { 46 uint_t mnt_flags; /* flags */ 47 vnode_t *mnt_mountvp; /* vnode mounted on */ 48 vnode_t *mnt_vnode; /* vnode for this mntnode */ 49 mntsnap_t mnt_read; /* Data for read() */ 50 mntsnap_t mnt_ioctl; /* Data for ioctl() */ 51 uint_t mnt_offset; /* offset within ioctl() snapshot */ 52 krwlock_t mnt_contents; /* protects mnt_read, mnt_ioctl, mnt_offset */ 53 } mntnode_t; 54 55 struct zone; 56 57 typedef struct mntdata { 58 struct zone *mnt_zone; /* zone for mount point */ 59 uint_t mnt_nopen; /* count of vnodes open */ 60 size_t mnt_size; /* latest snapshot size for mount */ 61 struct mntnode mnt_node; /* embedded mntnode */ 62 } mntdata_t; 63 64 /* 65 * Conversion macros. 66 */ 67 #define VTOM(vp) ((struct mntnode *)(vp)->v_data) 68 #define MTOV(pnp) ((pnp)->mnt_vnode) 69 #define MTOD(pnp) ((struct mntdata *)MTOV(pnp)->v_vfsp->vfs_data) 70 71 #if defined(_KERNEL) 72 73 /* 74 * Values for mnt_flags. 75 */ 76 #define MNT_SHOWHIDDEN 0x1 /* Hack to show all mounts, even MS_NOMNTTAB */ 77 78 extern struct vnodeops *mntvnodeops; 79 extern void mntfs_getmntopts(struct vfs *, char **, size_t *); 80 81 #endif /* _KERNEL */ 82 83 #ifdef __cplusplus 84 } 85 #endif 86 87 #endif /* _SYS_MNTFS_MNTDATA_H */ 88