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17 lines
300 B
Go
17 lines
300 B
Go
package fs
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import (
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"os"
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"golang.org/x/sys/unix"
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)
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func PreallocateFile(wr *os.File, size int64) error {
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if size <= 0 {
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return nil
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}
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// int fallocate(int fd, int mode, off_t offset, off_t len)
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// use mode = 0 to also change the file size
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return unix.Fallocate(int(wr.Fd()), 0, 0, size)
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}
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