From 6549072dcdc6419abc5b2e3a6259bbf0e8b5670f Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Mon, 23 Jan 2012 09:56:53 +0000
Subject: [PATCH] Introduced burn_offst_source_new() flag bit0 which bans size
 changes

---
 cdrskin/cdrskin_timestamp.h |  2 +-
 libburn/libburn.h           | 11 +++++++++--
 libburn/structure.c         |  6 ++++--
 3 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/cdrskin/cdrskin_timestamp.h b/cdrskin/cdrskin_timestamp.h
index 6ea7afa..2d16b70 100644
--- a/cdrskin/cdrskin_timestamp.h
+++ b/cdrskin/cdrskin_timestamp.h
@@ -1 +1 @@
-#define Cdrskin_timestamP "2012.01.19.210418"
+#define Cdrskin_timestamP "2012.01.20.091016"
diff --git a/libburn/libburn.h b/libburn/libburn.h
index 93d1cc2..65c8121 100644
--- a/libburn/libburn.h
+++ b/libburn/libburn.h
@@ -2619,8 +2619,15 @@ struct burn_source *burn_fd_source_new(int datafd, int subfd, off_t size);
     @param start The byte address where to start reading bytes for the
                  consumer. inp bytes may get skipped to reach this address.
     @param size  The number of bytes to be delivered to the consumer.
-    @param flag  Bitfield for control purposes (unused yet, submit 0).
->>> bit0 = allow set_size() to override existing sizes > 0
+                 If size is <= 0 then it may be set later by a call of method
+                 set_size(). If it is >= 0, then it can only be changed if
+                 flag bit0 was set with burn_offst_source_new().
+    @param flag  Bitfield for control purposes
+                 bit0 = Prevent set_size() from overriding interval sizes > 0.
+                        If such a size is already set, then the new one will
+                        only affect the reply of get_size().
+                        See also above struct burn_source.
+                        @since 1.2.0
     @return      Pointer to a burn_source object, later to be freed by
                  burn_source_free(). NULL indicates failure.
     @since 0.8.8
diff --git a/libburn/structure.c b/libburn/structure.c
index 64bf88b..5e0c990 100644
--- a/libburn/structure.c
+++ b/libburn/structure.c
@@ -1784,7 +1784,7 @@ overlapping_ba:;
 		else
 			inp_src = crs->file_source;
 		src = burn_offst_source_new(inp_src, crs->offst_source,
-			(off_t) (file_ba * crs->block_size), (off_t) 0, 0);
+			(off_t) (file_ba * crs->block_size), (off_t) 0, 1);
 		if (src == NULL)
 			goto out_of_mem;
 
@@ -2051,8 +2051,10 @@ cannot_open:;
 				0, 0);
 			ret = 0; goto ex;
 		}
-		burn_track_set_size(crs->track, crs->source_size -
+		ret = burn_track_set_size(crs->track, crs->source_size -
 			(off_t) (crs->current_file_ba * crs->block_size));
+		if (ret <= 0)
+			goto ex;
 
 		ret = cue_attach_track(session, crs, 0);
 		if (ret <= 0)