pkg/osutil: add DiskUsage function

DiskUsage returns total recursive disk usage of the dir (similar to du -s).

1 files changed, 6 insertions, 0 deletions

diff --git a/pkg/osutil/osutil_linux.go b/pkg/osutil/osutil_linux.go
index 63743a5f2..50be9b047 100644
--- a/pkg/osutil/osutil_linux.go
+++ b/pkg/osutil/osutil_linux.go
@@ -5,6 +5,7 @@ package osutil
 
 import (
 	"fmt"
+	"io/fs"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -150,3 +151,8 @@ func prolongPipe(r, w *os.File) {
 		syscall.Syscall(syscall.SYS_FCNTL, w.Fd(), syscall.F_SETPIPE_SZ, uintptr(sz))
 	}
 }
+
+func sysDiskUsage(info fs.FileInfo) uint64 {
+	stat := info.Sys().(*syscall.Stat_t)
+	return uint64(max(0, stat.Size, stat.Blocks*512))
+}