??

server/sys/fs.go

@@ -0,0 +1,20 @@
+package sys
+
+import (
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+// package containing fs related operation (unix only)
+
+// FreeSpace gets the available Bytes writable to download directory
+func FreeSpace() (uint64, error) {
+	var stat unix.Statfs_t
+	wd, err := os.Getwd()
+	if err != nil {
+		return 0, err
+	}
+	unix.Statfs(wd+"/downloads", &stat)
+	return (stat.Bavail * uint64(stat.Bsize)), nil
+}