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
28 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 .Nd manipulate extended attributes
71 are user tools to manipulate the named extended attributes on files and
75 argument should be the namespace of the attribute to retrieve: legal
82 argument should be the name of the attribute,
84 the name of the target file or directory,
86 a string to store in the attribute.
88 The following options are available:
89 .Bl -tag -width indent
92 Ignore errors on individual filenames and continue with
93 the remaining arguments.
96 If the file is a symbolic link, perform the operation on the
97 link itself rather than the file that the link points to.
100 Read attribute data from stdin instead of as an argument.
105 -terminate the extent content written out.
108 Do not print out the pathname and suppress error messages.
109 When given twice, print only the attribute value, with no trailing newline.
112 Escape nonprinting characters and put quotes around the output.
115 Print the output in hexadecimal.
119 setextattr system md5 `md5 -q /boot/kernel/kernel` /boot/kernel/kernel
120 md5 -q /boot/kernel/kernel | setextattr -i system md5 /boot/kernel/kernel
121 getextattr system md5 /boot/kernel/kernel
122 getextattr -qq system md5 /boot/kernel/kernel | od -x
123 lsextattr system /boot/kernel/kernel
124 rmextattr system md5 /boot/kernel/kernel
132 Extended attribute support was developed as part of the
137 It was developed to support security extensions requiring additional labels
138 to be associated with each file or directory.
140 .An Robert N M Watson
141 .An Poul-Henning Kamp