mirror of
https://github.com/GnoConsortium/gno.git
synced 2024-12-22 14:30:29 +00:00
82 lines
2.8 KiB
Groff
82 lines
2.8 KiB
Groff
.\" Copyright (c) 1983, 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.
|
|
.\"
|
|
.\" @(#)getgid.2 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.TH GETGID 2 "16 January 1997" GNO "System Calls"
|
|
.SH NAME
|
|
.BR getgid ,
|
|
.BR getegid
|
|
\- get group process identification
|
|
.SH SYNOPSIS
|
|
.br
|
|
#include <sys/types.h>
|
|
.br
|
|
#include <unistd.h>
|
|
.sp 1
|
|
gid_t
|
|
.BR getgid (void);
|
|
.br
|
|
gid_t
|
|
.BR getegid (void);
|
|
.SH DESCRIPTION
|
|
The
|
|
.BR getgid
|
|
function returns the real group ID of the calling process,
|
|
.BR getegid
|
|
returns the effective group ID of the calling process.
|
|
.LP
|
|
The real group ID is specified at login time.
|
|
.LP
|
|
The real group ID is the group of the user who invoked the program.
|
|
As the effective group ID gives the process additional permissions
|
|
during the execution of
|
|
.I set-group-ID
|
|
mode processes,
|
|
.BR getgid
|
|
is used to determine the real-user-id of the calling process.
|
|
.SH ERRORS
|
|
The
|
|
.BR getgid
|
|
and
|
|
.BR getegid
|
|
functions are always successful, and no return value is reserved to
|
|
indicate an error.
|
|
.SH SEE ALSO
|
|
.BR getuid (2),
|
|
.BR setregid (2),
|
|
.BR setgid (2)
|
|
.SH STANDARDS
|
|
.BR Getgid
|
|
and
|
|
.BR getegid
|
|
conform to IEEE Std 1003.1-1988 (POSIX).
|