57813e7f3f
Specifically, document the crshared() function and fix the prototype and description of the crcopy() function. PR: docs/32275 Submitted by: Chad David <davidc@acns.ab.ca> Reviewed by: jhb
111 lines
3.1 KiB
Groff
111 lines
3.1 KiB
Groff
.\"
|
|
.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. 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(s), this list of conditions and the following disclaimer as
|
|
.\" the first lines of this file unmodified other than the possible
|
|
.\" addition of one or more copyright notices.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice(s), 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 COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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 July 9, 2001
|
|
.Dt UCRED 9
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ucred ,
|
|
.Nm crget ,
|
|
.Nm crhold ,
|
|
.Nm crfree ,
|
|
.Nm crshared ,
|
|
.Nm crcopy ,
|
|
.Nm crdup
|
|
.Nd "functions related to user credentials"
|
|
.Sh SYNOPSIS
|
|
.In sys/param.h
|
|
.In sys/ucred.h
|
|
.Ft "struct ucred *"
|
|
.Fn crget void
|
|
.Ft void
|
|
.Fn crhold "struct ucred *cr"
|
|
.Ft void
|
|
.Fn crfree "struct ucred *cr"
|
|
.Ft int
|
|
.Fn crshared "struct ucred *cr"
|
|
.Ft void
|
|
.Fn crcopy "struct ucred *dest" "struct ucred *src"
|
|
.Ft "struct ucred *"
|
|
.Fn crdup "struct ucred *cr"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
family of functions is used to manage user credential structures
|
|
.Pq Vt "struct ucred"
|
|
within the kernel.
|
|
.Pp
|
|
The
|
|
.Fn crget
|
|
function allocates memory
|
|
for a new structure, sets its reference count to 1, and
|
|
initializes its lock.
|
|
.Pp
|
|
The
|
|
.Fn crhold
|
|
function increases the reference count on the credential.
|
|
.Pp
|
|
The
|
|
.Fn crfree
|
|
function decreases the reference count on the credential.
|
|
If the count drops to 0, the storage for the structure is freed.
|
|
.Pp
|
|
The
|
|
.Fn crshared
|
|
function returns true if the credential is shared.
|
|
A credential is considered to be shared if its reference
|
|
count is greater than one.
|
|
.Pp
|
|
The
|
|
.Fn crcopy
|
|
function copies the contents of the source (template)
|
|
credential into the destination template.
|
|
The
|
|
.Vt uidinfo
|
|
structure within the destination is referenced
|
|
by calling
|
|
.Xr uihold 9 .
|
|
.Pp
|
|
The
|
|
.Fn crdup
|
|
function allocates memory for a new structure and copies the
|
|
contents of
|
|
.Fa cr
|
|
into it.
|
|
The actual copying is performed by
|
|
.Fn crcopy .
|
|
.Sh RETURN VALUES
|
|
The functions that return values all return a pointer to a
|
|
.Vt ucred
|
|
structure.
|
|
.Sh SEE ALSO
|
|
.Xr uihold 9
|
|
.Sh AUTHORS
|
|
This man page was written by
|
|
.An Chad David Aq davidc@acns.ab.ca .
|