34 lines
1.1 KiB
Go
34 lines
1.1 KiB
Go
package fingerprint
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import (
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"fmt"
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"path/filepath"
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"syscall"
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)
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//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -output zstorage_windows.go storage_windows.go
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//sys getDiskFreeSpaceEx(dirName *uint16, availableFreeBytes *uint64, totalBytes *uint64, totalFreeBytes *uint64) (err error) = kernel32.GetDiskFreeSpaceExW
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// diskFree inspects the filesystem for path and returns the volume name and
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// the total and free bytes available on the file system.
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func (f *StorageFingerprint) diskFree(path string) (volume string, total, free uint64, err error) {
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absPath, err := filepath.Abs(path)
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if err != nil {
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return "", 0, 0, fmt.Errorf("failed to determine absolute path for %s", path)
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}
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volume = filepath.VolumeName(absPath)
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absPathp, err := syscall.UTF16PtrFromString(absPath)
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if err != nil {
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return "", 0, 0, fmt.Errorf("failed to convert \"%s\" to UTF16: %v", absPath, err)
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}
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if err := getDiskFreeSpaceEx(absPathp, nil, &total, &free); err != nil {
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return "", 0, 0, fmt.Errorf("failed to get free disk space for %s: %v", absPath, err)
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}
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return volume, total, free, nil
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}
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