Copyright (c) 2000, 2001 Robert N. M. Watson
Copyright (c) 2002 Networks Associates Technology, Inc.
All rights reserved.
This software was developed for the FreeBSD Project by Poul-Henning
Kamp and Network Associates Laboratories, the Security Research Division
of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
("CBOSS"), as part of the DARPA CHATS research program
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modification, are permitted provided that the following conditions
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$FreeBSD$
.Dd August 30, 2000 .Dt RMEXTATTR 8 .Os .Sh NAME .Nm getextattr , .Nm lsextattr , .Nm rmextattr , .Nm setextattr .Nd manipulate extended attributes .Sh SYNOPSIS .Nm getextattr .Op Fl fhqsx .Ar attrnamespace .Ar attrname .Ar filename ... .Nm lsextattr .Op Fl fhq .Ar attrnamespace .Ar filename ... .Nm rmextattr .Op Fl fhq .Ar attrnamespace .Ar attrname .Ar filename ... .Nm setextattr .Op Fl fhnq .Ar attrnamespace .Ar attrname .Ar attrvalue .Ar filename ... .Sh DESCRIPTION These utilities are user tools to manipulate the named extended attributes on files and directories. The .Ar attrnamespace argument should be the namespace of the attribute to retrieve: legal values are .Cm user and .Cm system . The .Ar attrname argument should be the name of the attribute, .Ar filename the name of the target file or directory, .Ar attrvalue a string to store in the attribute.
p The following options are available: l -tag -width indent t Fl f (Force.) Ignore errors on individual filenames and continue with the remaining arguments. t Fl h (No follow.) If the file is a symbolic link, perform the operation on the link itself rather than the file that the link points to. t Fl n .Dv ( NUL Ns -terminate.) .Dv NUL Ns -terminate the extent content written out. t Fl q (Quiet.) Do not print out the pathname and suppress error messages. t Fl s (Stringify.) Escape nonprinting characters and put quotes around the output. t Fl x (Hex.) Print the output in hexadecimal. .El .Sh EXAMPLES d -literal setextattr system md5 `md5 -q /boot/kernel/kernel` /boot/kernel/kernel getextattr system md5 /boot/kernel/kernel lsextattr system /boot/kernel/kernel rmextattr system md5 /boot/kernel/kernel .Ed .Sh SEE ALSO .Xr extattr 2 , .Xr extattr 3 , .Xr extattrctl 8 , .Xr extattr 9 .Sh HISTORY Extended attribute support was developed as part of the .Tn TrustedBSD Project, and introduced in .Fx 5.0 . It was developed to support security extensions requiring additional labels to be associated with each file or directory. .Sh AUTHORS .An Robert N M Watson .An Poul-Henning Kamp .Sh BUGS The .Nm setextattr utility can only be used to set attributes to strings.