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authorcvs2svn <cvs2svn@FreeBSD.org>1998-01-10 23:00:07 +0000
committercvs2svn <cvs2svn@FreeBSD.org>1998-01-10 23:00:07 +0000
commit7c6e96080c4fb49bf912942804477d202a53396c (patch)
tree876b1afcb203be407dbb2ddfc69653f78b8680c2 /lib/libc/sys/getgroups.2
parent1a06f650e6ca43e02260e8d252597fbed2cea73e (diff)
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This commit was manufactured by cvs2svn to create branch 'JB'.
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-.\" 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.
-.\"
-.\" @(#)getgroups.2 8.2 (Berkeley) 4/16/94
-.\"
-.Dd April 16, 1994
-.Dt GETGROUPS 2
-.Os BSD 4.2
-.Sh NAME
-.Nm getgroups
-.Nd get group access list
-.Sh SYNOPSIS
-.Fd #include <sys/param.h>
-.Fd #include <unistd.h>
-.Ft int
-.Fn getgroups "int gidsetlen" "gid_t *gidset"
-.Sh DESCRIPTION
-.Fn Getgroups
-gets the current group access list of the user process
-and stores it in the array
-.Fa gidset .
-The parameter
-.Fa gidsetlen
-indicates the number of entries that may be placed in
-.Fa gidset .
-.Fn Getgroups
-returns the actual number of groups returned in
-.Fa gidset .
-No more than
-.Dv NGROUPS ,
-as defined in
-.Aq Pa sys/param.h ,
-will ever
-be returned.
-.Sh RETURN VALUES
-A successful call returns the number of groups in the group set.
-A value of -1 indicates that an error occurred, and the error
-code is stored in the global variable
-.Va errno .
-.Sh ERRORS
-The possible errors for
-.Fn getgroups
-are:
-.Bl -tag -width Er
-.It Bq Er EINVAL
-The argument
-.Fa gidsetlen
-is smaller than the number of groups in the group set.
-.It Bq Er EFAULT
-The argument
-.Fa gidset
-specifies
-an invalid address.
-.El
-.Sh SEE ALSO
-.Xr setgroups 2 ,
-.Xr initgroups 3
-.Sh HISTORY
-The
-.Fn getgroups
-function call appeared in
-.Bx 4.2 .
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