Sorry about the long silence on this work, As we known this work depends on another work about changing argument from struct dentry to struct path for some attr/xattr related lsm hooks, I'm stuck with this thing, because IMA/EVM is a special security module which is not LSM-based currently, and severely coupled with the file system. so I am waiting for Roberto Sassu' work (Move IMA and EVM to the LSM infrastructure) to be ready, I think it can make my work more easy. you can find Roberto'work here, https://lwn.net/ml/linux-kernel/20230303181842.1087717-1-roberto.sassu@huawe...
Any good idea are welcome, thanks.
On 2022/8/27 19:12, Xiu Jianfeng wrote:
- abstract walk_to_visible_parent() helper
- chmod and chown rights only take affect on directory's context
- add testcase for fchmodat/lchown/fchownat
- fix other review issues
Xiu Jianfeng (6): landlock: expand access_mask_t to u32 type landlock: abstract walk_to_visible_parent() helper landlock: add chmod and chown support landlock/selftests: add selftests for chmod and chown landlock/samples: add chmod and chown support landlock: update chmod and chown support in document
Documentation/userspace-api/landlock.rst | 9 +- include/uapi/linux/landlock.h | 10 +- samples/landlock/sandboxer.c | 13 +- security/landlock/fs.c | 110 ++++++-- security/landlock/limits.h | 2 +- security/landlock/ruleset.h | 2 +- security/landlock/syscalls.c | 2 +- tools/testing/selftests/landlock/base_test.c | 2 +- tools/testing/selftests/landlock/fs_test.c | 267 ++++++++++++++++++- 9 files changed, 386 insertions(+), 31 deletions(-)