linux-next/security/landlock/common.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Landlock LSM - Common constants and helpers
 *
 * Copyright © 2016-2020 Mickaël Salaün <mic@digikod.net>
 * Copyright © 2018-2020 ANSSI
 */

#ifndef _SECURITY_LANDLOCK_COMMON_H
#define _SECURITY_LANDLOCK_COMMON_H

#define LANDLOCK_NAME "landlock"

#ifdef pr_fmt
#undef pr_fmt
#endif

#define pr_fmt(fmt) LANDLOCK_NAME ": " fmt

#define BIT_INDEX(bit) HWEIGHT(bit - 1)

#endif /* _SECURITY_LANDLOCK_COMMON_H */
landlock: Set up the security framework and manage credentials Process's credentials point to a Landlock domain, which is underneath implemented with a ruleset. In the following commits, this domain is used to check and enforce the ptrace and filesystem security policies. A domain is inherited from a parent to its child the same way a thread inherits a seccomp policy. Cc: James Morris <jmorris@namei.org> Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com> Reviewed-by: Jann Horn <jannh@google.com> Acked-by: Serge Hallyn <serge@hallyn.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210422154123.13086-4-mic@digikod.net Signed-off-by: James Morris <jamorris@linux.microsoft.com> 2021-04-22 15:41:13 +00:00			`/* SPDX-License-Identifier: GPL-2.0-only */`
			`/*`
			`* Landlock LSM - Common constants and helpers`
			`*`
			`* Copyright © 2016-2020 Mickaël Salaün <mic@digikod.net>`
			`* Copyright © 2018-2020 ANSSI`
			`*/`

			`#ifndef _SECURITY_LANDLOCK_COMMON_H`
			`#define _SECURITY_LANDLOCK_COMMON_H`

			`#define LANDLOCK_NAME "landlock"`

			`#ifdef pr_fmt`
			`#undef pr_fmt`
			`#endif`

			`#define pr_fmt(fmt) LANDLOCK_NAME ": " fmt`

landlock: Add support for KUnit tests Add the SECURITY_LANDLOCK_KUNIT_TEST option to enable KUnit tests for Landlock. The minimal required configuration is listed in the security/landlock/.kunitconfig file. Add an initial landlock_fs KUnit test suite with 7 test cases for filesystem helpers. These are related to the LANDLOCK_ACCESS_FS_REFER right. There is one KUnit test case per: * mutated state (e.g. test_scope_to_request_) or, shared state between tests (e.g. test_is_eaccess_*). Add macros to improve readability of tests (i.e. one per line). Test cases are collocated with the tested functions to help maintenance and improve documentation. This is why SECURITY_LANDLOCK_KUNIT_TEST cannot be set as module. This is a nice complement to Landlock's user space kselftests. We expect new Landlock features to come with KUnit tests as well. Thanks to UML support, we can run all KUnit tests for Landlock with: ./tools/testing/kunit/kunit.py run --kunitconfig security/landlock [00:00:00] ======================= landlock_fs ======================= [00:00:00] [PASSED] test_no_more_access [00:00:00] [PASSED] test_scope_to_request_with_exec_none [00:00:00] [PASSED] test_scope_to_request_with_exec_some [00:00:00] [PASSED] test_scope_to_request_without_access [00:00:00] [PASSED] test_is_eacces_with_none [00:00:00] [PASSED] test_is_eacces_with_refer [00:00:00] [PASSED] test_is_eacces_with_write [00:00:00] =================== [PASSED] landlock_fs =================== [00:00:00] ============================================================ [00:00:00] Testing complete. Ran 7 tests: passed: 7 Cc: Konstantin Meskhidze <konstantin.meskhidze@huawei.com> Reviewed-by: Günther Noack <gnoack@google.com> Link: https://lore.kernel.org/r/20240118113632.1948478-1-mic@digikod.net Signed-off-by: Mickaël Salaün <mic@digikod.net> 2024-01-18 11:36:32 +00:00			`#define BIT_INDEX(bit) HWEIGHT(bit - 1)`

landlock: Set up the security framework and manage credentials Process's credentials point to a Landlock domain, which is underneath implemented with a ruleset. In the following commits, this domain is used to check and enforce the ptrace and filesystem security policies. A domain is inherited from a parent to its child the same way a thread inherits a seccomp policy. Cc: James Morris <jmorris@namei.org> Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com> Reviewed-by: Jann Horn <jannh@google.com> Acked-by: Serge Hallyn <serge@hallyn.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210422154123.13086-4-mic@digikod.net Signed-off-by: James Morris <jamorris@linux.microsoft.com> 2021-04-22 15:41:13 +00:00			`#endif /* _SECURITY_LANDLOCK_COMMON_H */`