blob: 8d0efeaf4874d8f410b8f52ca3887a553596656f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _SYS_MNTFS_MNTDATA_H
#define _SYS_MNTFS_MNTDATA_H
#include <sys/vnode.h>
#include <sys/poll.h>
#include <sys/mnttab.h>
#include <sys/zone.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct mntelem {
/* Metadata. */
struct mntelem *mnte_next;
struct mntelem *mnte_prev;
timespec_t mnte_birth;
timespec_t mnte_death;
timespec_t mnte_vfs_ctime;
int mnte_refcnt;
/* Payload. */
int mnte_hidden;
char *mnte_text;
size_t mnte_text_size;
struct extmnttab mnte_tab;
} mntelem_t;
typedef struct mntsnap {
timespec_t mnts_time; /* Time of this snapshot. */
timespec_t mnts_last_mtime; /* mnttab modification time. */
mntelem_t *mnts_first; /* First element in this snapshot. */
mntelem_t *mnts_next; /* Next element to use. */
int mnts_flags; /* flags; see below. */
size_t mnts_nmnts; /* # of elements in this snapshot. */
size_t mnts_text_size; /* Text size for this snapshot. */
size_t mnts_foffset; /* File offset of last read(). */
size_t mnts_ieoffset; /* Offset of last read() in element. */
} mntsnap_t;
typedef struct mntnode {
vnode_t *mnt_vnode; /* vnode for this mntnode */
vnode_t *mnt_mountvp; /* vnode mounted on */
krwlock_t mnt_contents; /* protects mnt_flags, mnt_read & mnt_ioctl */
uint_t mnt_flags; /* flags; see below */
mntsnap_t mnt_read; /* data for read() */
mntsnap_t mnt_ioctl; /* data for ioctl() */
} mntnode_t;
/*
* Conversion macros.
*/
#define VTOM(vp) ((struct mntnode *)(vp)->v_data)
#define MTOV(pnp) ((pnp)->mnt_vnode)
#define MTOD(pnp) ((struct mntdata *)MTOV(pnp)->v_vfsp->vfs_data)
#define MNTFS_ELEM_IS_DEAD(x) ((x)->mnte_death.tv_sec || \
(x)->mnte_death.tv_nsec)
#define MNTFS_ELEM_IS_ALIVE(x) !MNTFS_ELEM_IS_DEAD(x)
#if defined(_KERNEL)
typedef struct mntdata {
zone_ref_t mnt_zone_ref; /* zone for mount point */
uint_t mnt_nopen; /* count of vnodes open */
size_t mnt_size; /* size of last normal snapshot */
size_t mnt_hidden_size; /* size of last hidden snapshot */
timespec_t mnt_mtime; /* mtime at last normal snapshot */
timespec_t mnt_hidden_mtime; /* mtime at last hidden snapshot */
struct mntnode mnt_node; /* embedded mntnode */
} mntdata_t;
/*
* Value for a mntsnap_t's mnts_flags.
*/
#define MNTS_SHOWHIDDEN 0x1 /* This snapshot contains hidden mounts. */
#define MNTS_REWIND 0x2 /* This snapshot must be refreshed. */
/*
* Values for a mntnode_t's mnt_flags.
*/
#define MNT_SHOWHIDDEN 0x1 /* Include MS_NOMNTTAB mounts in snapshots. */
extern struct vnodeops *mntvnodeops;
extern void mntfs_getmntopts(struct vfs *, char **, size_t *);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MNTFS_MNTDATA_H */
|
