fs: Add fs_get_type_name to return current filesystem name

Add fs_get_type_name so we can get the current filesystem type.
Signed-off-by: NAlex Kiernan <alex.kiernan@gmail.com>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NJoe Hershberger <joe.hershberger@ni.com>

fs/fs.c

@@ -265,6 +265,19 @@ static struct fstype_info *fs_get_info(int fstype)
 	return info;
 }
 
+/**
+ * fs_get_type_name() - Get type of current filesystem
+ *
+ * Return: Pointer to filesystem name
+ *
+ * Returns a string describing the current filesystem, or the sentinel
+ * "unsupported" for any unrecognised filesystem.
+ */
+const char *fs_get_type_name(void)
+{
+	return fs_get_info(fs_type)->name;
+}
+
 int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype)
 {
 	struct fstype_info *info;

include/fs.h

@@ -37,6 +37,16 @@ int fs_set_blk_dev(const char *ifname, const char *dev_part_str, int fstype);
  */
 int fs_set_blk_dev_with_part(struct blk_desc *desc, int part);
 
+/**
+ * fs_get_type_name() - Get type of current filesystem
+ *
+ * Return: Pointer to filesystem name
+ *
+ * Returns a string describing the current filesystem, or the sentinel
+ * "unsupported" for any unrecognised filesystem.
+ */
+const char *fs_get_type_name(void);
+
 /*
  * Print the list of files on the partition previously set by fs_set_blk_dev(),
  * in directory "dirname".