1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Landlock - Limits for different components 4 * 5 * Copyright © 2016-2020 Mickaël Salaün <mic@digikod.net> 6 * Copyright © 2018-2020 ANSSI 7 * Copyright © 2021-2025 Microsoft Corporation 8 */ 9 10 #ifndef _SECURITY_LANDLOCK_LIMITS_H 11 #define _SECURITY_LANDLOCK_LIMITS_H 12 13 #include <linux/bitops.h> 14 #include <linux/capability.h> 15 #include <linux/limits.h> 16 #include <linux/ns/ns_common_types.h> 17 #include <uapi/linux/landlock.h> 18 19 /* clang-format off */ 20 21 #define LANDLOCK_MAX_NUM_LAYERS 16 22 #define LANDLOCK_MAX_NUM_RULES U32_MAX 23 24 #define LANDLOCK_LAST_ACCESS_FS LANDLOCK_ACCESS_FS_RESOLVE_UNIX 25 #define LANDLOCK_MASK_ACCESS_FS ((LANDLOCK_LAST_ACCESS_FS << 1) - 1) 26 #define LANDLOCK_NUM_ACCESS_FS __const_hweight64(LANDLOCK_MASK_ACCESS_FS) 27 28 #define LANDLOCK_LAST_ACCESS_NET LANDLOCK_ACCESS_NET_CONNECT_SEND_UDP 29 #define LANDLOCK_MASK_ACCESS_NET ((LANDLOCK_LAST_ACCESS_NET << 1) - 1) 30 #define LANDLOCK_NUM_ACCESS_NET __const_hweight64(LANDLOCK_MASK_ACCESS_NET) 31 32 #define LANDLOCK_LAST_SCOPE LANDLOCK_SCOPE_SIGNAL 33 #define LANDLOCK_MASK_SCOPE ((LANDLOCK_LAST_SCOPE << 1) - 1) 34 #define LANDLOCK_NUM_SCOPE __const_hweight64(LANDLOCK_MASK_SCOPE) 35 36 #define LANDLOCK_LAST_PERMISSION LANDLOCK_PERMISSION_CAPABILITY_USE 37 #define LANDLOCK_MASK_PERMISSION ((LANDLOCK_LAST_PERMISSION << 1) - 1) 38 #define LANDLOCK_NUM_PERMISSION __const_hweight64(LANDLOCK_MASK_PERMISSION) 39 40 #define LANDLOCK_NUM_NAMESPACE_TYPE __const_hweight64((u64)CLONE_NS_ALL) 41 #define LANDLOCK_NUM_CAPABILITY (CAP_LAST_CAP + 1) 42 43 #define LANDLOCK_NUM_ACCESS_MAX \ 44 MAX(MAX(LANDLOCK_NUM_ACCESS_FS, LANDLOCK_NUM_ACCESS_NET), LANDLOCK_NUM_SCOPE) 45 46 #define LANDLOCK_LAST_RESTRICT_SELF LANDLOCK_RESTRICT_SELF_NO_NEW_PRIVS 47 #define LANDLOCK_MASK_RESTRICT_SELF ((LANDLOCK_LAST_RESTRICT_SELF << 1) - 1) 48 49 /* clang-format on */ 50 51 #endif /* _SECURITY_LANDLOCK_LIMITS_H */ 52