2 .\" Copyright (c) 2000, 2001 Robert N. M. Watson
3 .\" Copyright (c) 2002 Networks Associates Technology, Inc.
4 .\" All rights reserved.
6 .\" This software was developed for the FreeBSD Project by Poul-Henning
7 .\" Kamp and Network Associates Laboratories, the Security Research Division
8 .\" of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
9 .\" ("CBOSS"), as part of the DARPA CHATS research program
11 .\" Redistribution and use in source and binary forms, with or without
12 .\" modification, are permitted provided that the following conditions
14 .\" 1. Redistributions of source code must retain the above copyright
15 .\" notice, this list of conditions and the following disclaimer.
16 .\" 2. Redistributions in binary form must reproduce the above copyright
17 .\" notice, this list of conditions and the following disclaimer in the
18 .\" documentation and/or other materials provided with the distribution.
20 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 .Nd manipulate extended attributes
73 are user tools to manipulate the named extended attributes on files and
77 argument should be the namespace of the attribute to retrieve: legal
84 argument should be the name of the attribute,
86 the name of the target file or directory,
88 a string to store in the attribute.
90 The following options are available:
91 .Bl -tag -width indent
94 Ignore errors on individual filenames and continue with
95 the remaining arguments.
98 If the file is a symbolic link, perform the operation on the
99 link itself rather than the file that the link points to.
102 Read attribute data from stdin instead of as an argument.
107 -terminate the extent content written out.
110 Do not print out the pathname and suppress error messages.
111 When given twice, print only the attribute value, with no trailing newline.
114 Escape nonprinting characters and put quotes around the output.
117 Print the output in hexadecimal.
121 setextattr system md5 `md5 -q /boot/kernel/kernel` /boot/kernel/kernel
122 md5 -q /boot/kernel/kernel | setextattr -i system md5 /boot/kernel/kernel
123 getextattr system md5 /boot/kernel/kernel
124 getextattr -qq system md5 /boot/kernel/kernel | od -x
125 lsextattr system /boot/kernel/kernel
126 rmextattr system md5 /boot/kernel/kernel
134 Extended attribute support was developed as part of the
139 It was developed to support security extensions requiring additional labels
140 to be associated with each file or directory.
142 .An Robert N M Watson
143 .An Poul-Henning Kamp