From 0a3b34d9c133969fd02741bcc7b386e09e8348b6 Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Sun, 9 Jan 2011 13:59:19 +0000
Subject: [PATCH] Refusing to burn if foreseeable size exceeds media capacity

---
 cdrskin/cdrskin.1           |  5 ++++-
 cdrskin/cdrskin.c           | 40 ++++++++++++++++++++++++++-----------
 cdrskin/cdrskin_timestamp.h |  2 +-
 3 files changed, 33 insertions(+), 14 deletions(-)

diff --git a/cdrskin/cdrskin.1 b/cdrskin/cdrskin.1
index 0b4df82..31d36dc 100644
--- a/cdrskin/cdrskin.1
+++ b/cdrskin/cdrskin.1
@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH CDRSKIN 1 "Aug 21, 2010"
+.TH CDRSKIN 1 "Jan 09, 2011"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -554,6 +554,9 @@ which appear to be in the desired blank or format state already.
 This option enables a burn run with option -dummy even if libburn believes
 that drive and media will not simulate the write mode but will write for real.
 .br
+It enables a burn run where cdrskin expects to exceed the available media
+capacity.
+.br
 .B Caution:
 Use this only when in urgent need.
 .TP
diff --git a/cdrskin/cdrskin.c b/cdrskin/cdrskin.c
index 196c0df..e76b81a 100644
--- a/cdrskin/cdrskin.c
+++ b/cdrskin/cdrskin.c
@@ -1,6 +1,6 @@
 
 /*
- cdrskin.c , Copyright 2006-2010 Thomas Schmitt <scdbackup@gmx.net>
+ cdrskin.c , Copyright 2006-2011 Thomas Schmitt <scdbackup@gmx.net>
 Provided under GPL version 2 or later.
 
 A cdrecord compatible command line interface for libburn.
@@ -7081,6 +7081,10 @@ int Cdrskin_burn(struct CdrskiN *skin, int flag)
  double put_counter, get_counter, empty_counter, full_counter;
  int total_min_fill, fifo_percent;
 #endif
+#ifdef Cdrskin_libburn_has_get_spacE
+ off_t free_space;
+ char msg[80];
+#endif
 
  if(skin->tell_media_space)
    doing= "estimating";
@@ -7324,17 +7328,12 @@ burn_failed:;
    /* write capacity estimation and return without actual burning */
 
 #ifdef Cdrskin_libburn_has_get_spacE
-   {
-     off_t free_space;
-     char msg[80];
-
-     free_space= burn_disc_available_space(drive,o);
-     sprintf(msg,"%d\n",(int) (free_space/(off_t) 2048));
-     if(skin->preskin->result_fd>=0) {
-       write(skin->preskin->result_fd,msg,strlen(msg));
-     } else
-       printf("%s",msg);
-   }
+   free_space= burn_disc_available_space(drive,o);
+   sprintf(msg,"%d\n",(int) (free_space/(off_t) 2048));
+   if(skin->preskin->result_fd>=0) {
+     write(skin->preskin->result_fd,msg,strlen(msg));
+   } else
+     printf("%s",msg);
 #endif /* Cdrskin_libburn_has_get_spacE */
 
    if(skin->track_counter>0)
@@ -7344,6 +7343,23 @@ burn_failed:;
    {ret= 1; goto ex;}
  }
 
+
+#ifdef Cdrskin_libburn_has_get_spacE
+ if(skin->fixed_size > 0 && !skin->force_is_set) {
+   free_space= burn_disc_available_space(drive,o);
+   if(skin->fixed_size > free_space && free_space > 0) {
+     fprintf(stderr,
+ "cdrskin: FATAL : predicted session size %lus does not fit on media (%lus)\n",
+             (unsigned long) ((skin->fixed_size + 2047.0) / 2048.0),
+             (unsigned long) ((free_space + 2047) / 2048));
+     ClN(fprintf(stderr,
+              "cdrskin: HINT : This test may be disabled by option -force\n");)
+     {ret= 0; goto ex;}
+   }
+ }
+#endif /* Cdrskin_libburn_has_get_spacE */
+
+
  Cdrskin_adjust_speed(skin,0);
 
 #ifndef Cdrskin_extra_leaN
diff --git a/cdrskin/cdrskin_timestamp.h b/cdrskin/cdrskin_timestamp.h
index 9661961..3073f63 100644
--- a/cdrskin/cdrskin_timestamp.h
+++ b/cdrskin/cdrskin_timestamp.h
@@ -1 +1 @@
-#define Cdrskin_timestamP "2011.01.03.195125"
+#define Cdrskin_timestamP "2011.01.09.135915"