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fscrypt: Update mount info before create context

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NewContextFrom{Mountpoint,Path} functions use cached
`/proc/self/mountinfo` to find mounted file systems by device ID.
Since we run fscrypt as a library in a long-lived process the cached
information is likely to be stale. Stale entries may map device IDs to
mount points of already destroyed RBDs and fail context creation.
Updating the cache beforehand prevents this.

Signed-off-by: Marcel Lauhoff <marcel.lauhoff@suse.com>
This commit is contained in:
Marcel Lauhoff 2022-08-02 16:09:24 +02:00 committed by mergify[bot]
parent a52314356e
commit 97cb1b6672
1 changed files with 5 additions and 0 deletions
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5
internal/util/fscrypt/fscrypt.go
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@ -333,6 +333,11 @@ func Unlock(
return err
}
err = fscryptfilesystem.UpdateMountInfo()
if err != nil {
return err
}
fscryptContext, err := fscryptactions.NewContextFromMountpoint(stagingTargetPath, nil)
if err != nil {
log.ErrorLog(ctx, "fscrypt: failed to create context from mountpoint %v: %w", stagingTargetPath, err)