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/*
File: acl_equiv_mode.c
Copyright (C) 1999, 2000
Andreas Gruenbacher, <andreas.gruenbacher@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
#include "libacl.h"
int
acl_equiv_mode(acl_t acl, mode_t *mode_p)
{
acl_obj *acl_obj_p = ext2int(acl, acl);
acl_entry_obj *entry_obj_p, *mask_obj_p = NULL;
int not_equiv = 0;
mode_t mode = 0;
if (!acl_obj_p)
return -1;
FOREACH_ACL_ENTRY(entry_obj_p, acl_obj_p) {
switch(entry_obj_p->etag) {
case ACL_USER_OBJ:
mode |= (entry_obj_p->eperm.sperm
& S_IRWXO) << 6;
break;
case ACL_GROUP_OBJ:
mode |= (entry_obj_p->eperm.sperm &
S_IRWXO) << 3;
break;
case ACL_OTHER:
mode |= (entry_obj_p->eperm.sperm &
S_IRWXO);
break;
case ACL_MASK:
mask_obj_p = entry_obj_p;
/* fall through */
case ACL_USER:
case ACL_GROUP:
not_equiv = 1;
break;
default:
errno = EINVAL;
return -1;
}
}
if (mode_p) {
if (mask_obj_p)
mode = (mode & ~S_IRWXG) |
((mask_obj_p->eperm.sperm & S_IRWXO) << 3);
*mode_p = mode;
}
return not_equiv;
}
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