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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Landlock - Errata information
4 *
5 * Copyright © 2025 Microsoft Corporation
6 */
7
8#ifndef _SECURITY_LANDLOCK_ERRATA_H
9#define _SECURITY_LANDLOCK_ERRATA_H
10
11#include <linux/init.h>
12
13struct landlock_erratum {
14 const int abi;
15 const u8 number;
16};
17
18/* clang-format off */
19#define LANDLOCK_ERRATUM(NUMBER) \
20 { \
21 .abi = LANDLOCK_ERRATA_ABI, \
22 .number = NUMBER, \
23 },
24/* clang-format on */
25
26/*
27 * Some fixes may require user space to check if they are applied on the running
28 * kernel before using a specific feature. For instance, this applies when a
29 * restriction was previously too restrictive and is now getting relaxed (for
30 * compatibility or semantic reasons). However, non-visible changes for
31 * legitimate use (e.g. security fixes) do not require an erratum.
32 */
33static const struct landlock_erratum landlock_errata_init[] __initconst = {
34
35/*
36 * Only Sparse may not implement __has_include. If a compiler does not
37 * implement __has_include, a warning will be printed at boot time (see
38 * setup.c).
39 */
40#ifdef __has_include
41
42#define LANDLOCK_ERRATA_ABI 1
43#if __has_include("errata/abi-1.h")
44#include "errata/abi-1.h"
45#endif
46#undef LANDLOCK_ERRATA_ABI
47
48#define LANDLOCK_ERRATA_ABI 2
49#if __has_include("errata/abi-2.h")
50#include "errata/abi-2.h"
51#endif
52#undef LANDLOCK_ERRATA_ABI
53
54#define LANDLOCK_ERRATA_ABI 3
55#if __has_include("errata/abi-3.h")
56#include "errata/abi-3.h"
57#endif
58#undef LANDLOCK_ERRATA_ABI
59
60#define LANDLOCK_ERRATA_ABI 4
61#if __has_include("errata/abi-4.h")
62#include "errata/abi-4.h"
63#endif
64#undef LANDLOCK_ERRATA_ABI
65
66#define LANDLOCK_ERRATA_ABI 5
67#if __has_include("errata/abi-5.h")
68#include "errata/abi-5.h"
69#endif
70#undef LANDLOCK_ERRATA_ABI
71
72#define LANDLOCK_ERRATA_ABI 6
73#if __has_include("errata/abi-6.h")
74#include "errata/abi-6.h"
75#endif
76#undef LANDLOCK_ERRATA_ABI
77
78/*
79 * For each new erratum, we need to include all the ABI files up to the impacted
80 * ABI to make all potential future intermediate errata easy to backport.
81 *
82 * If such change involves more than one ABI addition, then it must be in a
83 * dedicated commit with the same Fixes tag as used for the actual fix.
84 *
85 * Each commit creating a new security/landlock/errata/abi-*.h file must have a
86 * Depends-on tag to reference the commit that previously added the line to
87 * include this new file, except if the original Fixes tag is enough.
88 *
89 * Each erratum must be documented in its related ABI file, and a dedicated
90 * commit must update Documentation/userspace-api/landlock.rst to include this
91 * erratum. This commit will not be backported.
92 */
93
94#endif
95
96 {}
97};
98
99#endif /* _SECURITY_LANDLOCK_ERRATA_H */