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-.\"-
-.\" Copyright (c) 2000 Robert N. M. Watson
-.\" Copyright (c) 2001 Thomas Moestl
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd March 21, 2001
-.Dt CAP_COPY_EXT 3
-.Os
-.Sh NAME
-.Nm cap_copy_ext , cap_size
-.Nd convert a capability state in working storage to an external representation
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In sys/types.h
-.In sys/capability.h
-.Ft ssize_t
-.Fn cap_copy_ext "void *ext_p" "cap_t cap" "ssize_t len"
-.Ft ssize_t
-.Fn cap_size "cap_t cap"
-.Sh DESCRIPTION
-The
-.Fn cap_copy_ext
-function converts the capability state in working storage identified by
-.Fa cap
-to an opaque contiguous external representation in the buffer
-pointed to by
-.Fa ext_p .
-.Fa len
-specifies the maximum number of bytes that may be written into the buffer.
-.Pp
-An application can use the
-.Fn cap_size
-function to determine the amount of storage in bytes that are needed for
-the external representation of
-.Fa cap .
-.Sh IMPLEMENTATION NOTES
-The format of the external representation is not specified in the POSIX.1e
-draft.
-Applications that need a portable representation should use
-.Xr cap_to_text 3 .
-.Pp
-This function is appropriate in cases where a persistent representation is
-needed that needs not to be portable.
-Due to endianess issues, this format might
-not even be portable between machines of different architectures running this
-implementation.
-.Pp
-.Xr cap_copy_int 3
-can be used to convert the external representation back to a
-.Vt cap_t .
-.Sh RETURN VALUES
-Upon successful completion, the
-.Fn cap_copy_ext
-function returns the number of bytes written to
-.Fa ext_p ,
-and
-.Fn cap_size
-returns the number of bytes needed for the external representation of
-.Fa cap .
-Otherwise, the value \-1 is returned and the global variable
-.Va errno
-is set to indicate the error.
-.Sh ERRORS
-.Fn cap_copy_ext
-fails if:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-The
-.Fa cap
-argument does not refer to a capability state in working storage,
-or the
-.Fa len
-argument is negative.
-.It Bq Er ERANGE
-The buffer size specified by
-.Fa len
-argument is too small to hold the external representation.
-.El
-.Pp
-.Fn cap_size
-fails if:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-The
-.Fa cap
-argument does not refer to a capability state in working storage.
-.El
-.Sh SEE ALSO
-.Xr cap_copy_int 3 ,
-.Xr cap_free 3 ,
-.Xr cap_from_text 3 ,
-.Xr cap_get_flag 3 ,
-.Xr cap_to_text 3 ,
-.Xr posix1e 3
-.Sh STANDARDS
-This function is expected to conform to the withdrawn
-IEEE draft 1003.1e
-.Pq Dq POSIX.1e .
-.Sh HISTORY
-These functions first appeared in
-.Fx 5.0 .
-.Sh AUTHORS
-.An Thomas Moestl Aq tmm@FreeBSD.org