From 86a3f4de2278ef3f25397490e4a5dea86309de9e Mon Sep 17 00:00:00 2001
From: Vreixo Formoso <vformoso@udc.es>
Date: Mon, 26 May 2008 15:43:55 +0200
Subject: [PATCH] Added iso_special_get_dev() API to retrieve devide id for
 device files.

---
 libisofs/libisofs.h | 10 ++++++++++
 libisofs/node.c     | 13 +++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/libisofs/libisofs.h b/libisofs/libisofs.h
index 6c827c0..a7ab0f9 100644
--- a/libisofs/libisofs.h
+++ b/libisofs/libisofs.h
@@ -2493,6 +2493,16 @@ int iso_file_get_sort_weight(IsoFile *file);
  */
 off_t iso_file_get_size(IsoFile *file);
 
+/**
+ * Get the device id (major/minor numbers) of the given block or
+ * character device file. The result is undefined for other kind
+ * of special files, of first be sure iso_node_get_mode() returns either
+ * S_IFBLK or S_IFCHR.
+ *
+ * @since 0.6.6
+ */
+dev_t iso_special_get_dev(IsoSpecial *special);
+
 /**
  * Get the IsoStream that represents the contents of the given IsoFile.
  * 
diff --git a/libisofs/node.c b/libisofs/node.c
index 9c8dee9..f1b26f9 100644
--- a/libisofs/node.c
+++ b/libisofs/node.c
@@ -906,6 +906,19 @@ IsoStream *iso_file_get_stream(IsoFile *file)
     return file->stream;
 }
 
+/**
+ * Get the device id (major/minor numbers) of the given block or
+ * character device file. The result is undefined for other kind
+ * of special files, of first be sure iso_node_get_mode() returns either
+ * S_IFBLK or S_IFCHR.
+ *
+ * @since 0.6.6
+ */
+dev_t iso_special_get_dev(IsoSpecial *special)
+{
+    return special->dev;
+}
+
 /**
  * Get the block lba of a file node, if it was imported from an old image.
  *