usr/src/lib/libbc/libc/sys/sys5/getgroups.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1990 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*
  30  * POSIX.1 compatible getgroups() routine
  31  * This is needed while gid_t is not the same size as int (or whatever the
  32  * syscall is using at the time).
  33  */
  34
  35 #include <sys/types.h>
  36 #include <sys/param.h>
  37 #include <sys/syscall.h>
  38
  39 int
  40 getgroups(int gidsetsize, gid_t grouplist[])
  41 {
  42         int     glist[NGROUPS]; /* getgroups() syscall returns ints */
  43         int     i;      /* loop control */
  44         int     rc;     /* return code hold area */
  45
  46         rc = _syscall(SYS_getgroups, gidsetsize, glist);
  47         if (rc > 0 && gidsetsize != 0)
  48                 for (i = 0; i < rc; i++)
  49                         grouplist[i] = (gid_t)glist[i];
  50         return (rc);
  51 }