19 lines
551 B
Go
19 lines
551 B
Go
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package pathfs_frontend
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import "syscall"
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// prealloc - preallocate space without changing the file size. This prevents
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// us from running out of space in the middle of an operation.
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func prealloc(fd int, off int64, len int64) (err error) {
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for {
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err = syscall.Fallocate(fd, FALLOC_FL_KEEP_SIZE, off, len)
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if err == syscall.EINTR {
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// fallocate, like many syscalls, can return EINTR. This is not an
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// error and just signifies that the operation was interrupted by a
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// signal and we should try again.
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continue
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}
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return err
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}
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}
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