/* SPDX-License-Identifier: GPL-2.0-only */ /* * Landlock - Audit helpers * * Copyright © 2023-2025 Microsoft Corporation */ #ifndef _SECURITY_LANDLOCK_AUDIT_H #define _SECURITY_LANDLOCK_AUDIT_H #include <linux/audit.h> #include <linux/lsm_audit.h> #include "access.h" #include "cred.h" enum landlock_request_type { LANDLOCK_REQUEST_PTRACE = 1, LANDLOCK_REQUEST_FS_CHANGE_TOPOLOGY, LANDLOCK_REQUEST_FS_ACCESS, LANDLOCK_REQUEST_NET_ACCESS, LANDLOCK_REQUEST_SCOPE_ABSTRACT_UNIX_SOCKET, LANDLOCK_REQUEST_SCOPE_SIGNAL, }; /* * We should be careful to only use a variable of this type for * landlock_log_denial(). This way, the compiler can remove it entirely if * CONFIG_AUDIT is not set. */ struct landlock_request { /* Mandatory fields. */ enum landlock_request_type type; struct common_audit_data audit; /** * layer_plus_one: First layer level that denies the request + 1. The * extra one is useful to detect uninitialized field. */ size_t layer_plus_one; /* Required field for configurable access control. */ access_mask_t access; /* Required fields for requests with layer masks. */ const layer_mask_t (*layer_masks)[]; size_t layer_masks_size; /* Required fields for requests with deny masks. */ const access_mask_t all_existing_optional_access; deny_masks_t deny_masks; }; #ifdef CONFIG_AUDIT void landlock_log_drop_domain(const struct landlock_hierarchy *const hierarchy); void landlock_log_denial(const struct landlock_cred_security *const subject, const struct landlock_request *const request); #else /* CONFIG_AUDIT */ static inline void landlock_log_drop_domain(const struct landlock_hierarchy *const hierarchy) { } static inline void landlock_log_denial(const struct landlock_cred_security *const subject, const struct landlock_request *const request) { } #endif /* CONFIG_AUDIT */ #endif /* _SECURITY_LANDLOCK_AUDIT_H */