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/*
* Copyright (c) 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.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getgrouplist.c 8.2 (Berkeley) 12/8/94";
#endif /* LIBC_SCCS and not lint */
/*
* get credential
*/
#include <sys/types.h>
#include <string.h>
#include <grp.h>
int
getgrouplist(uname, agroup, groups, grpcnt)
const char *uname;
int agroup;
register int *groups;
int *grpcnt;
{
register struct group *grp;
register int i, ngroups;
int ret, maxgroups;
ret = 0;
ngroups = 0;
maxgroups = *grpcnt;
/*
* When installing primary group, duplicate it;
* the first element of groups is the effective gid
* and will be overwritten when a setgid file is executed.
*/
groups[ngroups++] = agroup;
if (maxgroups > 1)
groups[ngroups++] = agroup;
/*
* Scan the group file to find additional groups.
*/
setgrent();
while (grp = getgrent()) {
for (i = 0; i < ngroups; i++) {
if (grp->gr_gid == groups[i])
goto skip;
}
for (i = 0; grp->gr_mem[i]; i++) {
if (!strcmp(grp->gr_mem[i], uname)) {
if (ngroups >= maxgroups) {
ret = -1;
break;
}
groups[ngroups++] = grp->gr_gid;
break;
}
}
skip:
}
endgrent();
*grpcnt = ngroups;
return (ret);
}
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