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authorgVisor bot <gvisor-bot@google.com>2021-11-02 19:34:05 +0000
committergVisor bot <gvisor-bot@google.com>2021-11-02 19:34:05 +0000
commit06c496f54fd0700ca8252ede5843575440ceb9b3 (patch)
tree5c18875817c206aa24e1c4c9c0d4560f0467628e /runsc
parent04d474e716e094266534c791188bea5e36fe5dda (diff)
parent1e1d6b2be37873c5e62461834df973f41565c662 (diff)
Merge release-20211026.0-22-g1e1d6b2be (automated)
Diffstat (limited to 'runsc')
-rw-r--r--runsc/fsgofer/fsgofer.go11
1 files changed, 11 insertions, 0 deletions
diff --git a/runsc/fsgofer/fsgofer.go b/runsc/fsgofer/fsgofer.go
index 600b21189..3d610199c 100644
--- a/runsc/fsgofer/fsgofer.go
+++ b/runsc/fsgofer/fsgofer.go
@@ -140,6 +140,17 @@ func (a *attachPoint) Attach() (p9.File, error) {
return lf, nil
}
+// ServerOptions implements p9.Attacher. It's safe to call SetAttr and Allocate
+// on deleted files because fsgofer either uses an existing FD or opens a new
+// one using the magic symlink in `/proc/[pid]/fd` and cannot mistakely open
+// a file that was created in the same path as the delete file.
+func (a *attachPoint) ServerOptions() p9.AttacherOptions {
+ return p9.AttacherOptions{
+ SetAttrOnDeleted: true,
+ AllocateOnDeleted: true,
+ }
+}
+
// makeQID returns a unique QID for the given stat buffer.
func (a *attachPoint) makeQID(stat *unix.Stat_t) p9.QID {
a.deviceMu.Lock()