95 lines
2.9 KiB
Groff
95 lines
2.9 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. 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.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
.\"
|
|
.\" @(#)getuid.2 8.1 (Berkeley) 6/4/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd June 4, 1993
|
|
.Dt GETUID 2
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm getuid ,
|
|
.Nm geteuid
|
|
.Nd get user identification
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.Fd #include <unistd.h>
|
|
.Fd #include <sys/types.h>
|
|
.Ft uid_t
|
|
.Fn getuid void
|
|
.Ft uid_t
|
|
.Fn geteuid void
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn getuid
|
|
function returns the real user ID of the calling process.
|
|
The
|
|
.Fn geteuid
|
|
function
|
|
returns the effective user ID of the calling process.
|
|
.Pp
|
|
The real user ID is that of the user who has invoked the program.
|
|
As the effective user ID
|
|
gives the process additional permissions during
|
|
execution of
|
|
.Dq Em set-user-ID
|
|
mode processes,
|
|
.Fn getuid
|
|
is used to determine the real-user-id of the calling process.
|
|
.Sh ERRORS
|
|
The
|
|
.Fn getuid
|
|
and
|
|
.Fn geteuid
|
|
functions are always successful, and no return value is reserved to
|
|
indicate an error.
|
|
.Sh SEE ALSO
|
|
.Xr getgid 2 ,
|
|
.Xr issetugid 2 ,
|
|
.Xr setgid 2 ,
|
|
.Xr setreuid 2 ,
|
|
.Xr setuid 2
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn geteuid
|
|
and
|
|
.Fn getuid
|
|
function calls are expected to conform to
|
|
.St -p1003.1-90 .
|
|
.Sh HISTORY
|
|
A
|
|
.Fn getuid
|
|
and a
|
|
.Fn geteuid
|
|
function call appeared in
|
|
.At v7 .
|