af4c1fb7a3
Retry operations that have been shown to throw EINTR errors on CIFS. Todo: Solution for this pain in the back: warning: unix.Getdents returned errno 2 in the middle of data rm: cannot remove 'linux-3.0.old3/Documentation/ABI/removed': Input/output error Progress towards fixing https://github.com/rfjakob/gocryptfs/issues/483 .
49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
package syscallcompat
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import (
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"syscall"
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)
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// retryEINTR executes operation `op` and retries if it gets EINTR.
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//
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// Like ignoringEINTR() in the Go stdlib:
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// https://github.com/golang/go/blob/d2a80f3fb5b44450e0b304ac5a718f99c053d82a/src/os/file_posix.go#L243
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//
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// This is needed because CIFS throws lots of EINTR errors:
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// https://github.com/rfjakob/gocryptfs/issues/483
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func retryEINTR(op func() error) error {
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for {
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err := op()
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if err != syscall.EINTR {
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return err
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}
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}
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}
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// retryEINTR2 is like retryEINTR but for functions that return an (int, error)
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// pair like syscall.Create().
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func retryEINTR2(op func() (int, error)) (int, error) {
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for {
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ret, err := op()
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if err != syscall.EINTR {
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return ret, err
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}
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}
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}
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// Open wraps syscall.Open.
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// Retries on EINTR.
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func Open(path string, mode int, perm uint32) (fd int, err error) {
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fd, err = retryEINTR2(func() (int, error) {
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return syscall.Open(path, mode, perm)
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})
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return fd, err
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}
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// Close wraps syscall.Close.
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// Retries on EINTR.
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func Close(fd int) (err error) {
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err = retryEINTR(func() error { return syscall.Close(fd) })
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return err
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}
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