Re: [PATCH v2 bpf-next 1/4] namei: Introduce new helper function path_walk_parent()
From: Al Viro <viro@zeniv.linux.org.uk>
Date: 2025-06-06 14:41:01
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On Mon, Jun 02, 2025 at 11:59:17PM -0700, Song Liu wrote:
This helper walks an input path to its parent. Logic are added to handle walking across mount tree. This will be used by landlock, and BPF LSM.
Unless I'm misreading that, it does *NOT* walk to parent - it treats step into mountpoint as a separate step. NAK in that form - it's simply a wrong primitive.