FreeBSD/Linux Kernel Cross Reference
sys/sys/extattr.h
1 /*-
2 * Copyright (c) 1999-2001 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * This software was developed by Robert Watson for the TrustedBSD Project.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: releng/6.4/sys/sys/extattr.h 179252 2008-05-23 18:08:32Z mckusick $
29 */
30 /*
31 * Developed by the TrustedBSD Project.
32 * Support for extended filesystem attributes.
33 */
34
35 #ifndef _SYS_EXTATTR_H_
36 #define _SYS_EXTATTR_H_
37
38 /*
39 * Defined name spaces for extended attributes. Numeric constants are passed
40 * via system calls, but a user-friendly string is also defined.
41 */
42 #define EXTATTR_NAMESPACE_EMPTY 0x00000000
43 #define EXTATTR_NAMESPACE_EMPTY_STRING "empty"
44 #define EXTATTR_NAMESPACE_USER 0x00000001
45 #define EXTATTR_NAMESPACE_USER_STRING "user"
46 #define EXTATTR_NAMESPACE_SYSTEM 0x00000002
47 #define EXTATTR_NAMESPACE_SYSTEM_STRING "system"
48
49 /*
50 * The following macro is designed to initialize an array that maps
51 * extended-attribute namespace values to their names, e.g.,
52 * char *extattr_namespace_names[] = EXTATTR_NAMESPACE_NAMES;
53 */
54 #define EXTATTR_NAMESPACE_NAMES { \
55 EXTATTR_NAMESPACE_EMPTY_STRING, \
56 EXTATTR_NAMESPACE_USER_STRING, \
57 EXTATTR_NAMESPACE_SYSTEM_STRING }
58
59 #ifdef _KERNEL
60
61 #define EXTATTR_MAXNAMELEN NAME_MAX
62 struct thread;
63 struct ucred;
64 struct vnode;
65 int extattr_check_cred(struct vnode *vp, int attrnamespace,
66 struct ucred *cred, struct thread *td, int access);
67
68 #else
69 #include <sys/cdefs.h>
70
71 struct iovec;
72
73 __BEGIN_DECLS
74 int extattrctl(const char *_path, int _cmd, const char *_filename,
75 int _attrnamespace, const char *_attrname);
76 int extattr_delete_fd(int _fd, int _attrnamespace, const char *_attrname);
77 int extattr_delete_file(const char *_path, int _attrnamespace,
78 const char *_attrname);
79 int extattr_delete_link(const char *_path, int _attrnamespace,
80 const char *_attrname);
81 ssize_t extattr_get_fd(int _fd, int _attrnamespace, const char *_attrname,
82 void *_data, size_t _nbytes);
83 ssize_t extattr_get_file(const char *_path, int _attrnamespace,
84 const char *_attrname, void *_data, size_t _nbytes);
85 ssize_t extattr_get_link(const char *_path, int _attrnamespace,
86 const char *_attrname, void *_data, size_t _nbytes);
87 ssize_t extattr_list_fd(int _fd, int _attrnamespace, void *_data,
88 size_t _nbytes);
89 ssize_t extattr_list_file(const char *_path, int _attrnamespace, void *_data,
90 size_t _nbytes);
91 ssize_t extattr_list_link(const char *_path, int _attrnamespace, void *_data,
92 size_t _nbytes);
93 int extattr_set_fd(int _fd, int _attrnamespace, const char *_attrname,
94 const void *_data, size_t _nbytes);
95 int extattr_set_file(const char *_path, int _attrnamespace,
96 const char *_attrname, const void *_data, size_t _nbytes);
97 int extattr_set_link(const char *_path, int _attrnamespace,
98 const char *_attrname, const void *_data, size_t _nbytes);
99 __END_DECLS
100
101 #endif /* !_KERNEL */
102 #endif /* !_SYS_EXTATTR_H_ */
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