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rclone: treat "file already closed" as command startup error

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Since #3940 the rclone backend returns the commands exit code if it
fails to start. The list of expected errors was missing the "file
already closed"-error which can occur if the http test request first
learns about the closed pipe to rclone before noticing the canceled
context.

Go internally makes sure that a file descriptor is unusable once it was
closed, thus this cannot have unintended side effects (like accidentally
reading from the wrong file due to a reused file descriptor).
This commit is contained in:
Michael Eischer 2022-12-02 20:46:02 +01:00
parent fa20a78bb6
commit f3d964a8c1
1 changed files with 1 additions and 1 deletions
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internal/backend/rclone/backend.go
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@ -239,7 +239,7 @@ func newBackend(cfg Config, lim limiter.Limiter) (*Backend, error) {
// wait for rclone to exit
wg.Wait()
// try to return the program exit code if communication with rclone has failed
if be.waitResult != nil && (errors.Is(err, context.Canceled) || errors.Is(err, io.ErrUnexpectedEOF) || errors.Is(err, syscall.EPIPE)) {
if be.waitResult != nil && (errors.Is(err, context.Canceled) || errors.Is(err, io.ErrUnexpectedEOF) || errors.Is(err, syscall.EPIPE) || errors.Is(err, os.ErrClosed)) {
err = be.waitResult
}