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mirror of https://gitlab.isc.org/isc-projects/bind9 synced 2025-08-24 11:08:45 +00:00
bind/lib/isc/fsaccess_common.c
Ondřej Surý 58bd26b6cf Update the copyright information in all files in the repository
This commit converts the license handling to adhere to the REUSE
specification.  It specifically:

1. Adds used licnses to LICENSES/ directory

2. Add "isc" template for adding the copyright boilerplate

3. Changes all source files to include copyright and SPDX license
   header, this includes all the C sources, documentation, zone files,
   configuration files.  There are notes in the doc/dev/copyrights file
   on how to add correct headers to the new files.

4. Handle the rest that can't be modified via .reuse/dep5 file.  The
   binary (or otherwise unmodifiable) files could have license places
   next to them in <foo>.license file, but this would lead to cluttered
   repository and most of the files handled in the .reuse/dep5 file are
   system test files.
2022-01-11 09:05:02 +01:00

97 lines
2.0 KiB
C

/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file
* \brief
* This file contains the OS-independent functionality of the API.
*/
#include <stdbool.h>
#include <isc/fsaccess.h>
#include <isc/result.h>
#include <isc/types.h>
#include <isc/util.h>
#include "fsaccess_common_p.h"
void
isc_fsaccess_add(int trustee, int permission, isc_fsaccess_t *access) {
REQUIRE(trustee <= 0x7);
REQUIRE(permission <= 0xFF);
if ((trustee & ISC_FSACCESS_OWNER) != 0) {
*access |= permission;
}
if ((trustee & ISC_FSACCESS_GROUP) != 0) {
*access |= (permission << GROUP);
}
if ((trustee & ISC_FSACCESS_OTHER) != 0) {
*access |= (permission << OTHER);
}
}
void
isc_fsaccess_remove(int trustee, int permission, isc_fsaccess_t *access) {
REQUIRE(trustee <= 0x7);
REQUIRE(permission <= 0xFF);
if ((trustee & ISC_FSACCESS_OWNER) != 0) {
*access &= ~permission;
}
if ((trustee & ISC_FSACCESS_GROUP) != 0) {
*access &= ~(permission << GROUP);
}
if ((trustee & ISC_FSACCESS_OTHER) != 0) {
*access &= ~(permission << OTHER);
}
}
isc_result_t
isc__fsaccess_check_bad_bits(isc_fsaccess_t access, bool is_dir) {
isc_fsaccess_t bits;
/*
* Check for disallowed user bits.
*/
if (is_dir) {
bits = ISC_FSACCESS_READ | ISC_FSACCESS_WRITE |
ISC_FSACCESS_EXECUTE;
} else {
bits = ISC_FSACCESS_CREATECHILD | ISC_FSACCESS_ACCESSCHILD |
ISC_FSACCESS_DELETECHILD | ISC_FSACCESS_LISTDIRECTORY;
}
/*
* Set group bad bits.
*/
bits |= bits << STEP;
/*
* Set other bad bits.
*/
bits |= bits << STEP;
if ((access & bits) != 0) {
if (is_dir) {
return (ISC_R_NOTFILE);
} else {
return (ISC_R_NOTDIRECTORY);
}
}
return (ISC_R_SUCCESS);
}