[roll] Roll fuchsia [starnix][overlay] Add underlying FsNode checks to check_access()

When access to an "overlay" FsNode is checked via check_access(),
it is necessary to check both that the caller has access to the
logical overlay node, but also that the mounter has access to the
physical node in the upper or lower filesystem.

If an overlay node already has an upper then the mounter check is
made against the upper node in the normal way - for the caller to
write to the node, the mounter must have write access to it, etc.

If the overlay node is only backed by a lower filesystem node then
the access check is customized to allow for the fact that for
regular files, directories and links only read access is required
to copy-up the content to the upper filesystem.

Original-Bug: 403260093
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1572833
Original-Revision: 8aaf9f78e12a3aee16960b14758fd7532cfc353c
GitOrigin-RevId: 6f1741597a81ed6c893ceb60c7f6bd0615442dde
Change-Id: I058edfce8dec61dccfe9812772ea7fed92af2018
1 file changed
tree: 6a568085dadb7cb8b4ee118635a48fdf415b3f0c
  1. ctf/
  2. git-hooks/
  3. infra/
  4. third_party/
  5. cobalt
  6. flower
  7. jiri.lock
  8. MILESTONE
  9. minimal
  10. prebuilts
  11. README.md
  12. stem
  13. test_durations
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.

Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance in one of the communication channels documented at get involved.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.