2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
99 lines
3.4 KiB
Groff
99 lines
3.4 KiB
Groff
.\" $NetBSD: extattr.3,v 1.3 2005/01/02 18:25:09 wiz Exp $
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.\"
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.\" Copyright (c) 2001 Dima Dorfman <dd@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" FreeBSD: src/lib/libc/posix1e/extattr.3,v 1.5 2002/12/12 17:25:53 ru Exp
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.\"
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.Dd January 2, 2004
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.Dt EXTATTR 3
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.Os
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.Sh NAME
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.Nm extattr_namespace_to_string ,
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.Nm extattr_string_to_namespace
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.Nd convert an extended attribute namespace identifier to a string and vice versa
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sys/extattr.h
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.Ft int
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.Fn extattr_namespace_to_string "int attrnamespace" "char **string"
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.Ft int
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.Fn extattr_string_to_namespace "const char *string" "int *attrnamespace"
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.Sh DESCRIPTION
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The
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.Fn extattr_namespace_to_string
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function converts a VFS extended attribute identifier to a human-readable
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string.
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The
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.Fn extattr_string_to_namespace
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converts a human-readable string representing a namespace to a
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namespace identifier.
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Although a file system may implement arbitrary namespaces,
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these functions only support the
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.Dv EXTATTR_NAMESPACE_USER
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.Pq Dq user
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and
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.Dv EXTATTR_NAMESPACE_SYSTEM
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.Pq Dq system
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namespaces,
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which are defined in
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.Xr extattr 9 .
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.Pp
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These functions are meant to be used in error reporting and other
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interactive tasks.
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For example,
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instead of printing the integer identifying an extended attribute in
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an error message,
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a program might use
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.Fn extattr_namespace_to_string
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to obtain a human-readable representation.
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Likewise,
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instead of requiring a user to enter the integer representing a namespace,
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an interactive program might ask for a name and use
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.Fn extattr_string_to_namespace
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to get the desired identifier.
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.Sh RETURN VALUES
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If any of the calls are unsuccessful, the value \-1 is returned
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and the global variable
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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.Bl -tag -width Er
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.It Bq Er EINVAL
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The requested namespace could not be identified.
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.El
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.Sh SEE ALSO
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.Xr getextattr 1 ,
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.Xr extattr_get_file 2 ,
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.Xr extattr 9
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.Sh HISTORY
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Extended attribute support was developed as part of the
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.Tn TrustedBSD
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Project, and introduced in
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.Fx 5.0
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and
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.Nx 3.0 .
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It was developed to support security extensions requiring additional labels
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to be associated with each file or directory.
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