d915a14ef0
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
165 lines
4.3 KiB
C
165 lines
4.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2001-2002 Chris D. Faulhaber
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include "namespace.h"
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#include <sys/acl.h>
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#include "un-namespace.h"
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#include <errno.h>
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#include <string.h>
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#include <stdio.h>
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#include "acl_support.h"
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static int
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_entry_matches(const acl_entry_t a, const acl_entry_t b)
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{
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/*
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* There is a semantical difference here between NFSv4 and POSIX
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* draft ACLs. In POSIX, there may be only one entry for the particular
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* user or group. In NFSv4 ACL, there may be any number of them. We're
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* trying to be more specific here in that case.
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*/
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switch (_entry_brand(a)) {
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case ACL_BRAND_NFS4:
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if (a->ae_tag != b->ae_tag || a->ae_entry_type != b->ae_entry_type)
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return (0);
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/* If ae_ids matter, compare them as well. */
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if (a->ae_tag == ACL_USER || a->ae_tag == ACL_GROUP) {
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if (a->ae_id != b->ae_id)
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return (0);
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}
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return (1);
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default:
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if ((a->ae_tag == b->ae_tag) && (a->ae_id == b->ae_id))
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return (1);
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}
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return (0);
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}
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/*
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* acl_delete_entry() (23.4.9): remove the ACL entry indicated by entry_d
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* from acl.
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*/
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int
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acl_delete_entry(acl_t acl, acl_entry_t entry_d)
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{
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struct acl *acl_int;
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struct acl_entry entry_int;
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int i, j, found = 0;
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if (acl == NULL || entry_d == NULL) {
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errno = EINVAL;
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return (-1);
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}
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acl_int = &acl->ats_acl;
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if (_entry_brand(entry_d) != _acl_brand(acl)) {
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errno = EINVAL;
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return (-1);
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}
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if ((acl->ats_acl.acl_cnt < 1) ||
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(acl->ats_acl.acl_cnt > ACL_MAX_ENTRIES)) {
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errno = EINVAL;
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return (-1);
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}
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/* Use a local copy to prevent deletion of more than this entry */
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entry_int = *entry_d;
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for (i = 0; i < acl->ats_acl.acl_cnt;) {
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if (_entry_matches(&(acl->ats_acl.acl_entry[i]), &entry_int)) {
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/* ...shift the remaining entries... */
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for (j = i; j < acl->ats_acl.acl_cnt - 1; ++j)
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acl->ats_acl.acl_entry[j] =
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acl->ats_acl.acl_entry[j+1];
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/* ...drop the count and zero the unused entry... */
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acl->ats_acl.acl_cnt--;
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bzero(&acl->ats_acl.acl_entry[j],
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sizeof(struct acl_entry));
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acl->ats_cur_entry = 0;
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/* Continue with the loop to remove all matching entries. */
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found = 1;
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} else
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i++;
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}
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if (found)
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return (0);
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errno = EINVAL;
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return (-1);
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}
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int
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acl_delete_entry_np(acl_t acl, int offset)
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{
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struct acl *acl_int;
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int i;
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if (acl == NULL) {
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errno = EINVAL;
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return (-1);
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}
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acl_int = &acl->ats_acl;
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if (offset < 0 || offset >= acl_int->acl_cnt) {
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errno = EINVAL;
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return (-1);
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}
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if ((acl->ats_acl.acl_cnt < 1) ||
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(acl->ats_acl.acl_cnt > ACL_MAX_ENTRIES)) {
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errno = EINVAL;
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return (-1);
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}
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/* ...shift the remaining entries... */
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for (i = offset; i < acl->ats_acl.acl_cnt - 1; ++i)
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acl->ats_acl.acl_entry[i] =
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acl->ats_acl.acl_entry[i+1];
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/* ...drop the count and zero the unused entry... */
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acl->ats_acl.acl_cnt--;
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bzero(&acl->ats_acl.acl_entry[i],
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sizeof(struct acl_entry));
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acl->ats_cur_entry = 0;
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return (0);
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}
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