125 lines
3.9 KiB
Groff
125 lines
3.9 KiB
Groff
.\"-
|
|
.\" Copyright (c) 2000 Robert N. M. Watson
|
|
.\" 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 September 18, 2000
|
|
.Dt CAP_TO_TEXT 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm cap_to_text
|
|
.Nd convert a capability state in working storage to text
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In sys/types.h
|
|
.In sys/capability.h
|
|
.Ft char *
|
|
.Fn cap_to_text "cap_t cap_p" "ssize_t *len_p"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn cap_to_text
|
|
function converts the capability state in working storage identified by
|
|
.Va cap_p
|
|
into a null terminated human-readable string.
|
|
This function allocates any memory necessary to contain the string, and
|
|
returns a pointer to the string.
|
|
If the pointer
|
|
.Va len_p
|
|
if not
|
|
.Va (size_t)NULL ,
|
|
the function shall also return the full length of the string (not including
|
|
null terminator) in the location pointed to by
|
|
.Va len_p .
|
|
The capability state in working storage idenfied by
|
|
.Va cap_p
|
|
shall be completely represented in the returned string.
|
|
.Pp
|
|
This function may cause memory to be allocated.
|
|
The caller should free any releasable memory, when the capability state
|
|
in working memory is no longer required, by calling
|
|
.Xr cap_free 3
|
|
with the
|
|
.Va cap_t
|
|
as an argument.
|
|
.Sh IMPLEMENTATION NOTES
|
|
.Fx Ns 's
|
|
support for POSIX.1e interfaces and features is still under
|
|
development at this time.
|
|
.Sh RETURN VALUES
|
|
Upon successful completion, the function shall return a pointer to the
|
|
text form of the capability state.
|
|
Otherwise, a value of
|
|
.Va (char *)NULL
|
|
shall be returned, and
|
|
.Va errno
|
|
set to indicate the error.
|
|
.Sh ERRORS
|
|
If any of the following conditions occur, the
|
|
.Fn cap_to_text
|
|
function shall return a value of
|
|
.Va (cap_t)NULL
|
|
and set
|
|
.Va errno
|
|
to the corresponding value:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EINVAL
|
|
Either the
|
|
.Va cap_p
|
|
argument does not refer to a capability state in working storage
|
|
or the
|
|
.Va len_p
|
|
argument is invalid, or both.
|
|
.It Bq Er ENOMEM
|
|
The string to be returned requires more memory than is allowed by the
|
|
hardware or system-imposed memory management constraints.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr cap 3 ,
|
|
.Xr cap_free 3 ,
|
|
.Xr cap_from_text 3 ,
|
|
.Xr cap_get_flag 3 ,
|
|
.Xr posix1e 3
|
|
.Sh STANDARDS
|
|
POSIX.1e is described in IEEE POSIX.1e draft 17. Discussion
|
|
of the draft continues on the cross-platform POSIX.1e implementation
|
|
mailing list. To join this list, see the
|
|
.Fx
|
|
POSIX.1e implementation
|
|
page for more information.
|
|
.Sh HISTORY
|
|
POSIX.1e support was introduced in
|
|
.Fx 4.0 ,
|
|
and development continues.
|
|
.Sh AUTHORS
|
|
.An Robert N M Watson
|
|
.Sh BUGS
|
|
.Fn cap_to_text
|
|
uses a bounded size (1024 byte) buffer in which to assemble the resulting
|
|
text string.
|
|
If the string requires more space than that buffer provides,
|
|
.Er ENOMEM
|
|
will be returned.
|