1 | /* $NetBSD: extattr.h,v 1.11 2014/12/19 10:59:21 manu Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 1999-2001 Robert N. M. Watson |
5 | * All rights reserved. |
6 | * |
7 | * This software was developed by Robert Watson for the TrustedBSD Project. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
28 | * SUCH DAMAGE. |
29 | * |
30 | * $FreeBSD: src/sys/ufs/ufs/extattr.h,v 1.20 2005/01/31 08:16:45 imp Exp $ |
31 | */ |
32 | |
33 | /* |
34 | * Support for file system extended attributes on the UFS1 file system. |
35 | * Developed by the TrustedBSD Project. |
36 | */ |
37 | |
38 | #ifndef _UFS_UFS_EXTATTR_H_ |
39 | #define _UFS_UFS_EXTATTR_H_ |
40 | |
41 | #define UFS_EXTATTR_MAGIC 0x00b5d5ec |
42 | #define UFS_EXTATTR_VERSION 0x00000003 |
43 | #define UFS_EXTATTR_FSROOTSUBDIR ".attribute" |
44 | #define UFS_EXTATTR_SUBDIR_SYSTEM "system" |
45 | #define UFS_EXTATTR_SUBDIR_USER "user" |
46 | #define UFS_EXTATTR_MAXEXTATTRNAME 256 /* including null */ |
47 | |
48 | #define UFS_EXTATTR_ATTR_FLAG_INUSE 0x00000001 /* attr has been set */ |
49 | #define UFS_EXTATTR_PERM_KERNEL 0x00000000 |
50 | #define UFS_EXTATTR_PERM_ROOT 0x00000001 |
51 | #define UFS_EXTATTR_PERM_OWNER 0x00000002 |
52 | #define UFS_EXTATTR_PERM_ANYONE 0x00000003 |
53 | |
54 | #define UFS_EXTATTR_UEPM_INITIALIZED 0x00000001 |
55 | #define UFS_EXTATTR_UEPM_STARTED 0x00000002 |
56 | |
57 | #define UFS_EXTATTR_CMD_START EXTATTR_CMD_START |
58 | #define UFS_EXTATTR_CMD_STOP EXTATTR_CMD_STOP |
59 | #define UFS_EXTATTR_CMD_ENABLE 0x00000003 |
60 | #define UFS_EXTATTR_CMD_DISABLE 0x00000004 |
61 | |
62 | struct { |
63 | uint32_t ; /* magic number for sanity checking */ |
64 | uint32_t ; /* version of attribute file */ |
65 | uint32_t ; /* size of attributes, w/o header */ |
66 | }; |
67 | |
68 | struct { |
69 | uint32_t ; /* flags for attribute */ |
70 | uint32_t ; /* local defined length; <= uef_size */ |
71 | uint32_t ; /* generation number for sanity */ |
72 | /* data follows the header */ |
73 | }; |
74 | |
75 | #ifdef _KERNEL |
76 | |
77 | #ifdef MALLOC_DECLARE |
78 | MALLOC_DECLARE(M_EXTATTR); |
79 | #endif |
80 | |
81 | struct vnode; |
82 | LIST_HEAD(ufs_extattr_list_head, ufs_extattr_list_entry); |
83 | struct ufs_extattr_list_entry { |
84 | LIST_ENTRY(ufs_extattr_list_entry) uele_entries; |
85 | struct ufs_extattr_fileheader ; |
86 | int uele_attrnamespace; |
87 | char uele_attrname[UFS_EXTATTR_MAXEXTATTRNAME]; |
88 | struct vnode *uele_backing_vnode; |
89 | int uele_flags; |
90 | }; |
91 | |
92 | /* uele_flags */ |
93 | #define UELE_F_NEEDSWAP 0x01 /* needs byte swap */ |
94 | |
95 | #define UELE_NEEDSWAP(uele) ((uele)->uele_flags & UELE_F_NEEDSWAP) |
96 | |
97 | struct lock; |
98 | struct ufs_extattr_per_mount { |
99 | kmutex_t uepm_lock; |
100 | struct ufs_extattr_list_head uepm_list; |
101 | kauth_cred_t uepm_ucred; |
102 | int uepm_lockcnt; |
103 | int uepm_flags; |
104 | }; |
105 | |
106 | void ufs_extattr_uepm_init(struct ufs_extattr_per_mount *uepm); |
107 | void ufs_extattr_uepm_destroy(struct ufs_extattr_per_mount *uepm); |
108 | int ufs_extattr_start(struct mount *mp, struct lwp *l); |
109 | int ufs_extattr_autostart(struct mount *mp, struct lwp *l); |
110 | void ufs_extattr_stop(struct mount *mp, struct lwp *l); |
111 | int ufs_extattrctl(struct mount *mp, int cmd, struct vnode *filename, |
112 | int attrnamespace, const char *attrname); |
113 | struct vop_getextattr_args; |
114 | int ufs_getextattr(struct vop_getextattr_args *ap); |
115 | struct vop_deleteextattr_args; |
116 | int ufs_deleteextattr(struct vop_deleteextattr_args *ap); |
117 | struct vop_setextattr_args; |
118 | int ufs_setextattr(struct vop_setextattr_args *ap); |
119 | struct vop_listextattr_args; |
120 | int ufs_listextattr(struct vop_listextattr_args *ap); |
121 | void ufs_extattr_vnode_inactive(struct vnode *vp, struct lwp *l); |
122 | |
123 | void ufs_extattr_init(void); |
124 | void ufs_extattr_done(void); |
125 | |
126 | #endif /* !_KERNEL */ |
127 | |
128 | #endif /* !_UFS_UFS_EXTATTR_H_ */ |
129 | |