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a=ed25519-sha256; t=1787926304; l=5358; i=andrea.cervesato@suse.com; s=20251210; h=from:subject:message-id; bh=tjR8iqzTWcr855s8YKE/ynk9t+0WqJTgVMnX+3w4fgU=; b=cZpj1oReAWEcBuyejNiosfjXrW13A5/0PkBIY1MStUYi6jA1yIcwHFP5+JVWPiZNkqj5+ZYN3 iIEp5ckYNFvDdQW9hYEbz5Kn0WV9evRHOEBpRSTQ65ArAg4tf6C9gUh X-Developer-Key: i=andrea.cervesato@suse.com; a=ed25519; pk=zKY+6GCauOiuHNZ//d8PQ/UL4jFCTKbXrzXAOQSLevI= X-Spamd-Result: default: False [-4.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.995]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_DN_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:mid, suse.com:email, linux.it:email, imap1.dmz-prg2.suse.org:helo] X-Virus-Scanned: clamav-milter 1.0.9 at in-3.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH v3 00/15] fchroot: add fchroot() testing suite 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" fchroot() is a new syscall introduced in the Linux v7.3 development cycle together with failfs, a kernel internal filesystem where every operation fails with EOPNOTSUPP. The syscall is the fd-based counterpart of chroot(2): it moves the process root to the directory referenced by a file descriptor, or to the failfs root via the FD_FAILFS_ROOT sentinel. The series first updates the architecture syscall number tables and adds lapi fallback definitions for the new fd sentinels, then adds 13 tests covering: - the basic directory fd use case and the argument error paths (EINVAL, EBADF, ENOTDIR) - the permission checks, both execute permission and CAP_SYS_CHROOT - entering failfs as root: EOPNOTSUPP on every absolute lookup, unreachable working directory, root that can not be referenced or pinned, path walks anchored at file descriptors, execve blocked, fork inheritance and the setns() escape - the unprivileged entry rules: no_new_privs, shared fs_struct and the already chrooted case fchroot() is not part of any released kernel yet, so the tests are added to runtest/staging and each patch carries the [STAGING] prefix as required by the LTP ground rules. The testing suite creation has been assisted by GLM 5.3. Signed-off-by: Andrea Cervesato --- Changes in v3: - remove order specific tests inside the descriptions - fchroot07: add child - fix snprintf() possible overflows - fix tests using TST_EXP_* macros - use stat(".", ..) where it's needed - Link to v2: https://lore.kernel.org/20260820-fchroot-v2-0-062ed20957a0@suse.com Changes in v2: - make description more readable - invert fork() logic for the main test process - fix the issues found by the agent - Link to v1: https://lore.kernel.org/20260819-fchroot-v1-0-2dc2c3c3cf29@suse.com To: Linux Test Project --- Andrea Cervesato (15): syscalls: add v7.3 syscall numbers syscalls: update outdated syscall entries [STAGING] lapi: fallback fchroot() parameters [STAGING] fchroot01: test fchroot() with a directory fd [STAGING] fchroot02: test fchroot() invalid arguments [STAGING] fchroot03: test fchroot() permission checks [STAGING] fchroot04: test fchroot() into failfs as root [STAGING] fchroot05: test failfs root can not be referenced [STAGING] fchroot06: test path walks under failfs root [STAGING] fchroot07: test execve blocked by failfs root [STAGING] fchroot09: test setns escape from failfs root [STAGING] fchroot10: test failfs entry without no_new_privs [STAGING] fchroot11: test failfs entry with no_new_privs [STAGING] fchroot12: test failfs entry with shared fs_struct [STAGING] fchroot13: test failfs entry when chrooted include/lapi/fcntl.h | 13 +++ include/lapi/syscalls/arc.in | 3 + include/lapi/syscalls/arm.in | 4 +- include/lapi/syscalls/arm64.in | 3 + include/lapi/syscalls/i386.in | 4 +- include/lapi/syscalls/loongarch64.in | 3 + include/lapi/syscalls/mips64.in | 5 +- include/lapi/syscalls/mips64n32.in | 5 +- include/lapi/syscalls/mipso32.in | 5 +- include/lapi/syscalls/parisc.in | 4 +- include/lapi/syscalls/powerpc.in | 4 +- include/lapi/syscalls/powerpc64.in | 4 +- include/lapi/syscalls/s390.in | 5 +- include/lapi/syscalls/s390x.in | 5 +- include/lapi/syscalls/sh.in | 4 +- include/lapi/syscalls/sparc.in | 5 +- include/lapi/syscalls/sparc64.in | 5 +- include/lapi/syscalls/x86_64.in | 5 +- runtest/staging | 14 +++ testcases/kernel/syscalls/fchroot/.gitignore | 14 +++ testcases/kernel/syscalls/fchroot/Makefile | 7 ++ testcases/kernel/syscalls/fchroot/fchroot01.c | 58 ++++++++++ testcases/kernel/syscalls/fchroot/fchroot02.c | 75 ++++++++++++ testcases/kernel/syscalls/fchroot/fchroot03.c | 72 ++++++++++++ testcases/kernel/syscalls/fchroot/fchroot04.c | 70 ++++++++++++ testcases/kernel/syscalls/fchroot/fchroot05.c | 75 ++++++++++++ testcases/kernel/syscalls/fchroot/fchroot06.c | 126 +++++++++++++++++++++ testcases/kernel/syscalls/fchroot/fchroot07.c | 56 +++++++++ .../kernel/syscalls/fchroot/fchroot07_child.c | 16 +++ testcases/kernel/syscalls/fchroot/fchroot08.c | 69 +++++++++++ testcases/kernel/syscalls/fchroot/fchroot09.c | 86 ++++++++++++++ testcases/kernel/syscalls/fchroot/fchroot10.c | 50 ++++++++ testcases/kernel/syscalls/fchroot/fchroot11.c | 70 ++++++++++++ testcases/kernel/syscalls/fchroot/fchroot12.c | 85 ++++++++++++++ testcases/kernel/syscalls/fchroot/fchroot13.c | 63 +++++++++++ 35 files changed, 1073 insertions(+), 19 deletions(-) --- base-commit: 3c0271a307bd765c2fd652c325762a90ddf5d46f change-id: 20260819-fchroot-66115fd0d497 Best regards, -- Andrea Cervesato -- Mailing list info: https://lists.linux.it/listinfo/ltp