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| author | Mickaël Salaün <mic@digikod.net> | 2022-09-23 17:42:06 +0200 |
|---|---|---|
| committer | Mickaël Salaün <mic@digikod.net> | 2022-09-29 18:43:03 +0200 |
| commit | 16023b05f0832f5bc14e6e0d1e7be4d00e01e1bb (patch) | |
| tree | 10303541aea37219351c59c1a7e1218b755472bb /Documentation | |
| parent | samples/landlock: Print hints about ABI versions (diff) | |
| download | linux-16023b05f0832f5bc14e6e0d1e7be4d00e01e1bb.tar.xz linux-16023b05f0832f5bc14e6e0d1e7be4d00e01e1bb.zip | |
landlock: Slightly improve documentation and fix spelling
Now that we have more than one ABI version, make limitation explanation
more consistent by replacing "ABI 1" with "ABI < 2". This also
indicates which ABIs support such past limitation.
Improve documentation consistency by not using contractions.
Fix spelling in fs.c .
Cc: Paul Moore <paul@paul-moore.com>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Reviewed-by: Günther Noack <gnoack3000@gmail.com>
Link: https://lore.kernel.org/r/20220923154207.3311629-3-mic@digikod.net
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/security/landlock.rst | 4 | ||||
| -rw-r--r-- | Documentation/userspace-api/landlock.rst | 10 |
2 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/security/landlock.rst b/Documentation/security/landlock.rst index 5c77730b4479..cc9617f3175b 100644 --- a/Documentation/security/landlock.rst +++ b/Documentation/security/landlock.rst @@ -7,7 +7,7 @@ Landlock LSM: kernel documentation ================================== :Author: Mickaël Salaün -:Date: May 2022 +:Date: September 2022 Landlock's goal is to create scoped access-control (i.e. sandboxing). To harden a whole system, this feature should be available to any process, @@ -49,7 +49,7 @@ Filesystem access rights ------------------------ All access rights are tied to an inode and what can be accessed through it. -Reading the content of a directory doesn't imply to be allowed to read the +Reading the content of a directory does not imply to be allowed to read the content of a listed inode. Indeed, a file name is local to its parent directory, and an inode can be referenced by multiple file names thanks to (hard) links. Being able to unlink a file only has a direct impact on the diff --git a/Documentation/userspace-api/landlock.rst b/Documentation/userspace-api/landlock.rst index b8ea59493964..83bae71bf042 100644 --- a/Documentation/userspace-api/landlock.rst +++ b/Documentation/userspace-api/landlock.rst @@ -8,7 +8,7 @@ Landlock: unprivileged access control ===================================== :Author: Mickaël Salaün -:Date: May 2022 +:Date: September 2022 The goal of Landlock is to enable to restrict ambient rights (e.g. global filesystem access) for a set of processes. Because Landlock is a stackable @@ -170,7 +170,7 @@ It is recommended setting access rights to file hierarchy leaves as much as possible. For instance, it is better to be able to have ``~/doc/`` as a read-only hierarchy and ``~/tmp/`` as a read-write hierarchy, compared to ``~/`` as a read-only hierarchy and ``~/tmp/`` as a read-write hierarchy. -Following this good practice leads to self-sufficient hierarchies that don't +Following this good practice leads to self-sufficient hierarchies that do not depend on their location (i.e. parent directories). This is particularly relevant when we want to allow linking or renaming. Indeed, having consistent access rights per directory enables to change the location of such directory @@ -380,8 +380,8 @@ by the Documentation/admin-guide/cgroup-v1/memory.rst. Previous limitations ==================== -File renaming and linking (ABI 1) ---------------------------------- +File renaming and linking (ABI < 2) +----------------------------------- Because Landlock targets unprivileged access controls, it needs to properly handle composition of rules. Such property also implies rules nesting. @@ -410,7 +410,7 @@ contains `CONFIG_LSM=landlock,[...]` with `[...]` as the list of other potentially useful security modules for the running system (see the `CONFIG_LSM` help). -If the running kernel doesn't have `landlock` in `CONFIG_LSM`, then we can +If the running kernel does not have `landlock` in `CONFIG_LSM`, then we can still enable it by adding ``lsm=landlock,[...]`` to Documentation/admin-guide/kernel-parameters.rst thanks to the bootloader configuration. |