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authorRahat Mahmood <rahat@google.com>2020-06-05 19:10:28 -0700
committergVisor bot <gvisor-bot@google.com>2020-06-05 19:12:03 -0700
commit21b6bc7280f68f43360a008ffd02a4f461ec9fc8 (patch)
tree82a81d3d32681762d0bfa54776ba453349711734 /test/packetdrill/packetdrill_setup.sh
parent527d08f6afdea1e142c76b8abb2266525a98c2ea (diff)
Implement mount(2) and umount2(2) for VFS2.
This is mostly syscall plumbing, VFS2 already implements the internals of mounts. In addition to the syscall defintions, the following mount-related mechanisms are updated: - Implement MS_NOATIME for VFS2, but only for tmpfs and goferfs. The other VFS2 filesystems don't implement node-level timestamps yet. - Implement the 'mode', 'uid' and 'gid' mount options for VFS2's tmpfs. - Plumb mount namespace ownership, which is necessary for checking appropriate capabilities during mount(2). Updates #1035 PiperOrigin-RevId: 315035352
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