Annotation of src/sys/ufs/ufs/extattr.h, Revision 1.8.42.1
1.8.42.1! cherry 1: /* $NetBSD: extattr.h,v 1.9 2011/06/17 14:23:52 manu Exp $ */
1.1 thorpej 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 65 /* 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:
1.8.42.1! cherry 57: #define UFS_EXTATTR_CMD_START EXTATTR_CMD_START
! 58: #define UFS_EXTATTR_CMD_STOP EXTATTR_CMD_STOP
1.1 thorpej 59: #define UFS_EXTATTR_CMD_ENABLE 0x00000003
60: #define UFS_EXTATTR_CMD_DISABLE 0x00000004
61:
62: struct ufs_extattr_fileheader {
63: uint32_t uef_magic; /* magic number for sanity checking */
64: uint32_t uef_version; /* version of attribute file */
65: uint32_t uef_size; /* size of attributes, w/o header */
66: };
67:
68: struct ufs_extattr_header {
69: uint32_t ueh_flags; /* flags for attribute */
70: uint32_t ueh_len; /* local defined length; <= uef_size */
71: uint32_t ueh_i_gen; /* 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 uele_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 {
1.8 ad 99: kmutex_t uepm_lock;
1.1 thorpej 100: struct ufs_extattr_list_head uepm_list;
1.4 elad 101: kauth_cred_t uepm_ucred;
1.8 ad 102: int uepm_lockcnt;
1.1 thorpej 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);
1.3 rpaulo 108: int ufs_extattr_start(struct mount *mp, struct lwp *l);
109: int ufs_extattr_autostart(struct mount *mp, struct lwp *l);
1.7 pooka 110: void ufs_extattr_stop(struct mount *mp, struct lwp *l);
1.1 thorpej 111: int ufs_extattrctl(struct mount *mp, int cmd, struct vnode *filename,
1.6 pooka 112: int attrnamespace, const char *attrname);
1.1 thorpej 113: int ufs_getextattr(struct vop_getextattr_args *ap);
114: int ufs_deleteextattr(struct vop_deleteextattr_args *ap);
115: int ufs_setextattr(struct vop_setextattr_args *ap);
116: int ufs_listextattr(struct vop_listextattr_args *ap);
1.3 rpaulo 117: void ufs_extattr_vnode_inactive(struct vnode *vp, struct lwp *l);
1.1 thorpej 118:
1.5 pooka 119: void ufs_extattr_init(void);
120: void ufs_extattr_done(void);
121:
1.1 thorpej 122: #endif /* !_KERNEL */
123:
124: #endif /* !_UFS_UFS_EXTATTR_H_ */
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