local: add Metadata support #111

backend/local/metadata_linux.go

@@ -0,0 +1,47 @@
+//go:build linux
+// +build linux
+
+package local
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/rclone/rclone/fs"
+	"golang.org/x/sys/unix"
+)
+
+// Read the metadata from the file into metadata where possible
+func (o *Object) readMetadataFromFile(m *fs.Metadata) (err error) {
+	flags := unix.AT_SYMLINK_NOFOLLOW
+	if o.fs.opt.FollowSymlinks {
+		flags = 0
+	}
+	var stat unix.Statx_t
+	err = unix.Statx(unix.AT_FDCWD, o.path, flags, (0 |
+		unix.STATX_TYPE | // Want stx_mode & S_IFMT
+		unix.STATX_MODE | // Want stx_mode & ~S_IFMT
+		unix.STATX_UID | // Want stx_uid
+		unix.STATX_GID | // Want stx_gid
+		unix.STATX_ATIME | // Want stx_atime
+		unix.STATX_MTIME | // Want stx_mtime
+		unix.STATX_CTIME | // Want stx_ctime
+		unix.STATX_BTIME), // Want stx_btime
+		&stat)
+	if err != nil {
+		return err
+	}
+	m.Set("mode", fmt.Sprintf("%0o", stat.Mode))
+	m.Set("uid", fmt.Sprintf("%d", stat.Uid))
+	m.Set("gid", fmt.Sprintf("%d", stat.Gid))
+	if stat.Rdev_major != 0 || stat.Rdev_minor != 0 {
+		m.Set("rdev", fmt.Sprintf("%x", uint64(stat.Rdev_major)<<32|uint64(stat.Rdev_minor)))
+	}
+	setTime := func(key string, t unix.StatxTimestamp) {
+		m.Set(key, time.Unix(t.Sec, int64(t.Nsec)).Format(metadataTimeFormat))
+	}
+	setTime("atime", stat.Atime)
+	setTime("mtime", stat.Mtime)
+	setTime("btime", stat.Btime)
+	return nil
+}