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a=openpgp; fpr=F5CAC17350A456D2C21BDFD8CBCC1AB220B3E646 X-Spamd-Result: default: False [-4.10 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:email] X-Spam-Level: X-Spam-Score: -4.10 X-Spam-Status: No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on in-4.smtp.seeweb.it X-Virus-Scanned: clamav-milter 1.0.3 at in-4.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH v4 4/5] Add landlock05 test X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mic@digikod.net, gnoack@google.com Errors-To: ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it Sender: "ltp" From: Andrea Cervesato This test verifies LANDLOCK_ACCESS_FS_REFER access in the landlock sandbox. The feature is available since kernel 5.19. Reviewed-by: Li Wang Signed-off-by: Andrea Cervesato --- runtest/syscalls | 1 + testcases/kernel/syscalls/landlock/.gitignore | 1 + testcases/kernel/syscalls/landlock/landlock05.c | 116 ++++++++++++++++++++++++ 3 files changed, 118 insertions(+) diff --git a/runtest/syscalls b/runtest/syscalls index 67b2e2758..6522f5bc7 100644 --- a/runtest/syscalls +++ b/runtest/syscalls @@ -700,6 +700,7 @@ landlock01 landlock01 landlock02 landlock02 landlock03 landlock03 landlock04 landlock04 +landlock05 landlock05 lchown01 lchown01 lchown01_16 lchown01_16 diff --git a/testcases/kernel/syscalls/landlock/.gitignore b/testcases/kernel/syscalls/landlock/.gitignore index 4fe8d7cba..a7ea6be2e 100644 --- a/testcases/kernel/syscalls/landlock/.gitignore +++ b/testcases/kernel/syscalls/landlock/.gitignore @@ -3,3 +3,4 @@ landlock01 landlock02 landlock03 landlock04 +landlock05 diff --git a/testcases/kernel/syscalls/landlock/landlock05.c b/testcases/kernel/syscalls/landlock/landlock05.c new file mode 100644 index 000000000..6ad1fdb79 --- /dev/null +++ b/testcases/kernel/syscalls/landlock/landlock05.c @@ -0,0 +1,116 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2024 SUSE LLC Andrea Cervesato + */ + +/*\ + * [Description] + * + * This test verifies LANDLOCK_ACCESS_FS_REFER access in the + * landlock sandbox. + * + * [Algorithm] + * + * - apply LANDLOCK_ACCESS_FS_REFER in the folder1 + * - apply LANDLOCK_ACCESS_FS_REFER in the folder2 + * - create folder3 + * - verify that file can be moved from folder1 to folder2 + * - verify that file can't be moved from folder1 to folder3 + */ + +#include "landlock_common.h" + +#define MNTPOINT "sandbox" +#define DIR1 MNTPOINT"/folder1" +#define DIR2 MNTPOINT"/folder2" +#define DIR3 MNTPOINT"/folder3" +#define FILENAME1 DIR1"/file" +#define FILENAME2 DIR2"/file" +#define FILENAME3 DIR3"/file" + +static struct landlock_ruleset_attr *ruleset_attr; +static struct landlock_path_beneath_attr *path_beneath_attr; + +static void run(void) +{ + if (SAFE_FORK()) + return; + + TST_EXP_PASS(rename(FILENAME1, FILENAME2)); + if (TST_RET == -1) + return; + + TST_EXP_FAIL(rename(FILENAME2, FILENAME3), EXDEV); + TST_EXP_PASS(rename(FILENAME2, FILENAME1)); + + _exit(0); +} + +static void setup(void) +{ + int ruleset_fd; + + verify_landlock_is_enabled(); + + SAFE_MKDIR(DIR1, 0640); + SAFE_MKDIR(DIR2, 0640); + SAFE_MKDIR(DIR3, 0640); + SAFE_TOUCH(FILENAME1, 0640, NULL); + + tst_res(TINFO, "Applying LANDLOCK_ACCESS_FS_REFER"); + + ruleset_attr->handled_access_fs = + LANDLOCK_ACCESS_FS_READ_FILE | + LANDLOCK_ACCESS_FS_WRITE_FILE | + LANDLOCK_ACCESS_FS_REFER; + + ruleset_fd = SAFE_LANDLOCK_CREATE_RULESET( + ruleset_attr, sizeof(struct landlock_ruleset_attr), 0); + + apply_landlock_rule( + path_beneath_attr, + ruleset_fd, + LANDLOCK_ACCESS_FS_REFER, + DIR1); + + apply_landlock_rule( + path_beneath_attr, + ruleset_fd, + LANDLOCK_ACCESS_FS_REFER, + DIR2); + + enforce_ruleset(ruleset_fd); + + SAFE_CLOSE(ruleset_fd); +} + +static struct tst_test test = { + .test_all = run, + .setup = setup, + .min_kver = "5.19", + .needs_tmpdir = 1, + .needs_root = 1, + .forks_child = 1, + .needs_kconfigs = (const char *[]) { + "CONFIG_SECURITY_LANDLOCK=y", + NULL + }, + .bufs = (struct tst_buffers []) { + {&ruleset_attr, .size = sizeof(struct landlock_ruleset_attr)}, + {&path_beneath_attr, .size = sizeof(struct landlock_path_beneath_attr)}, + {}, + }, + .caps = (struct tst_cap []) { + TST_CAP(TST_CAP_REQ, CAP_SYS_ADMIN), + {} + }, + .format_device = 1, + .mount_device = 1, + .mntpoint = MNTPOINT, + .all_filesystems = 1, + .skip_filesystems = (const char *[]) { + "vfat", + "exfat", + NULL + }, +};