25 lines
526 B
Go
25 lines
526 B
Go
package fsutil
|
|
|
|
import (
|
|
"syscall"
|
|
|
|
"golang.org/x/xerrors"
|
|
)
|
|
|
|
type SizeInfo struct {
|
|
OnDisk int64
|
|
}
|
|
|
|
// FileSize returns bytes used by a file on disk
|
|
func FileSize(path string) (SizeInfo, error) {
|
|
var stat syscall.Stat_t
|
|
if err := syscall.Stat(path, &stat); err != nil {
|
|
return SizeInfo{}, xerrors.Errorf("stat: %w", err)
|
|
}
|
|
|
|
// NOTE: stat.Blocks is in 512B blocks, NOT in stat.Blksize
|
|
// See https://www.gnu.org/software/libc/manual/html_node/Attribute-Meanings.html
|
|
return SizeInfo{
|
|
stat.Blocks * 512,
|
|
}, nil
|
|
} |