Include atime architectural separation from steputils master

Author: Badlazzor

fileutil/atime_darwin.go

@@ -0,0 +1,12 @@
+//go:build darwin || freebsd || netbsd || openbsd
+
+package fileutil
+
+import (
+	"syscall"
+	"time"
+)
+
+func atimeFromStat(stat *syscall.Stat_t) time.Time {
+	return time.Unix(int64(stat.Atimespec.Sec), int64(stat.Atimespec.Nsec))
+}

fileutil/atime_linux.go

@@ -0,0 +1,12 @@
+//go:build linux
+
+package fileutil
+
+import (
+	"syscall"
+	"time"
+)
+
+func atimeFromStat(stat *syscall.Stat_t) time.Time {
+	return time.Unix(int64(stat.Atim.Sec), int64(stat.Atim.Nsec))
+}

fileutil/copy.go

@@ -166,7 +166,7 @@ func (fm fileManager) copyTimes(srcInfo os.FileInfo, dstPath string) error {
 		if stat, ok := srcInfo.Sys().(*syscall.Stat_t); ok {
 			// set times (for non-symlink paths we use os.chtimes)
 			if srcInfo.Mode()&os.ModeSymlink == 0 {
-				atime := time.Unix(stat.Atimespec.Sec, stat.Atimespec.Nsec)
+				atime := atimeFromStat(stat)
 				mtime := srcInfo.ModTime()
 				if err := fm.chtimes(dstPath, atime, mtime); err != nil {
 					return fmt.Errorf("chtimes %s: %w", dstPath, err)