zrepl/zfs/zfs_pipe_linux.go

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package zfs
import (
"errors"
"fmt"
"os"
"golang.org/x/sys/unix"
)
func trySetPipeCapacity(p *os.File, capacity int) {
res, err := unix.FcntlInt(p.Fd(), unix.F_SETPIPE_SZ, capacity)
if err != nil {
err = fmt.Errorf("cannot set pipe capacity to %v", capacity)
} else if res == -1 {
err = errors.New("cannot set pipe capacity: fcntl returned -1")
}
if debugEnabled && err != nil {
debug("trySetPipeCapacity error: %s\n", err)
}
}