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author | Ayush Ranjan <ayushranjan@google.com> | 2020-08-07 20:06:39 -0700 |
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committer | gVisor bot <gvisor-bot@google.com> | 2020-08-07 20:08:47 -0700 |
commit | 3be26a271cd0fc9618fbcb34e1a2a84c4f234c86 (patch) | |
tree | 1ff6717aae2104543670375cb9c90010b2efccf4 /pkg/sentry/kernel/fasync/BUILD | |
parent | 977618c8e155c0178979ff9f8ea05bbb5c0886b5 (diff) |
[vfs2] Fix tmpfs mounting.
Earlier we were using NLink to decide if /tmp is empty or not. However, NLink
at best tells us about the number of subdirectories (via the ".." entries).
NLink = n + 2 for n subdirectories. But it does not tell us if the directory is
empty. There still might be non-directory files. We could also not rely on
NLink because host overlayfs always returned 1.
VFS1 uses Readdir to decide if the directory is empty. Used a similar approach.
We now use IterDirents to decide if the "/tmp" directory is empty.
Fixes #3369
PiperOrigin-RevId: 325554234
Diffstat (limited to 'pkg/sentry/kernel/fasync/BUILD')
0 files changed, 0 insertions, 0 deletions