1 | /* $NetBSD: ulfs_extattr.h,v 1.3 2016/06/20 01:56:21 dholland Exp $ */ |
2 | /* from NetBSD: extattr.h,v 1.11 2014/12/19 10:59:21 manu Exp */ |
3 | |
4 | /*- |
5 | * Copyright (c) 1999-2001 Robert N. M. Watson |
6 | * All rights reserved. |
7 | * |
8 | * This software was developed by Robert Watson for the TrustedBSD Project. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | * |
31 | * $FreeBSD: src/sys/ufs/ufs/extattr.h,v 1.20 2005/01/31 08:16:45 imp Exp $ |
32 | */ |
33 | |
34 | /* |
35 | * Support for file system extended attributes on the ULFS1 file system. |
36 | * Developed by the TrustedBSD Project. |
37 | */ |
38 | |
39 | #ifndef _UFS_LFS_ULFS_EXTATTR_H_ |
40 | #define _UFS_LFS_ULFS_EXTATTR_H_ |
41 | |
42 | #define ULFS_EXTATTR_MAGIC 0x00b5d5ec |
43 | #define ULFS_EXTATTR_VERSION 0x00000003 |
44 | #define ULFS_EXTATTR_FSROOTSUBDIR ".attribute" |
45 | #define ULFS_EXTATTR_SUBDIR_SYSTEM "system" |
46 | #define ULFS_EXTATTR_SUBDIR_USER "user" |
47 | #define ULFS_EXTATTR_MAXEXTATTRNAME 256 /* including null */ |
48 | |
49 | #define ULFS_EXTATTR_ATTR_FLAG_INUSE 0x00000001 /* attr has been set */ |
50 | #define ULFS_EXTATTR_PERM_KERNEL 0x00000000 |
51 | #define ULFS_EXTATTR_PERM_ROOT 0x00000001 |
52 | #define ULFS_EXTATTR_PERM_OWNER 0x00000002 |
53 | #define ULFS_EXTATTR_PERM_ANYONE 0x00000003 |
54 | |
55 | #define ULFS_EXTATTR_UEPM_INITIALIZED 0x00000001 |
56 | #define ULFS_EXTATTR_UEPM_STARTED 0x00000002 |
57 | |
58 | #define ULFS_EXTATTR_CMD_START EXTATTR_CMD_START |
59 | #define ULFS_EXTATTR_CMD_STOP EXTATTR_CMD_STOP |
60 | #define ULFS_EXTATTR_CMD_ENABLE 0x00000003 |
61 | #define ULFS_EXTATTR_CMD_DISABLE 0x00000004 |
62 | |
63 | struct { |
64 | uint32_t ; /* magic number for sanity checking */ |
65 | uint32_t ; /* version of attribute file */ |
66 | uint32_t ; /* size of attributes, w/o header */ |
67 | }; |
68 | |
69 | struct { |
70 | uint32_t ; /* flags for attribute */ |
71 | uint32_t ; /* local defined length; <= uef_size */ |
72 | uint32_t ; /* generation number for sanity */ |
73 | /* data follows the header */ |
74 | }; |
75 | |
76 | #ifdef _KERNEL |
77 | |
78 | #ifdef MALLOC_DECLARE |
79 | MALLOC_DECLARE(M_EXTATTR); |
80 | #endif |
81 | |
82 | struct vnode; |
83 | LIST_HEAD(ulfs_extattr_list_head, ulfs_extattr_list_entry); |
84 | struct ulfs_extattr_list_entry { |
85 | LIST_ENTRY(ulfs_extattr_list_entry) uele_entries; |
86 | struct ulfs_extattr_fileheader ; |
87 | int uele_attrnamespace; |
88 | char uele_attrname[ULFS_EXTATTR_MAXEXTATTRNAME]; |
89 | struct vnode *uele_backing_vnode; |
90 | int uele_flags; |
91 | }; |
92 | |
93 | /* uele_flags */ |
94 | #define UELE_F_NEEDSWAP 0x01 /* needs byte swap */ |
95 | |
96 | #define UELE_NEEDSWAP(uele) ((uele)->uele_flags & UELE_F_NEEDSWAP) |
97 | |
98 | struct lock; |
99 | struct ulfs_extattr_per_mount { |
100 | kmutex_t uepm_lock; |
101 | struct ulfs_extattr_list_head uepm_list; |
102 | kauth_cred_t uepm_ucred; |
103 | int uepm_lockcnt; |
104 | int uepm_flags; |
105 | }; |
106 | |
107 | void ulfs_extattr_uepm_init(struct ulfs_extattr_per_mount *uepm); |
108 | void ulfs_extattr_uepm_destroy(struct ulfs_extattr_per_mount *uepm); |
109 | int ulfs_extattr_start(struct mount *mp, struct lwp *l); |
110 | int ulfs_extattr_autostart(struct mount *mp, struct lwp *l); |
111 | void ulfs_extattr_stop(struct mount *mp, struct lwp *l); |
112 | int ulfs_extattrctl(struct mount *mp, int cmd, struct vnode *filename, |
113 | int attrnamespace, const char *attrname); |
114 | struct vop_getextattr_args; |
115 | int ulfs_getextattr(struct vop_getextattr_args *ap); |
116 | struct vop_deleteextattr_args; |
117 | int ulfs_deleteextattr(struct vop_deleteextattr_args *ap); |
118 | struct vop_setextattr_args; |
119 | int ulfs_setextattr(struct vop_setextattr_args *ap); |
120 | struct vop_listextattr_args; |
121 | int ulfs_listextattr(struct vop_listextattr_args *ap); |
122 | void ulfs_extattr_vnode_inactive(struct vnode *vp, struct lwp *l); |
123 | |
124 | void ulfs_extattr_init(void); |
125 | void ulfs_extattr_done(void); |
126 | |
127 | #endif /* !_KERNEL */ |
128 | |
129 | #endif /* !_UFS_LFS_ULFS_EXTATTR_H_ */ |
130 | |