Add fabricated disc status.

libisoburn/isoburn.c

@@ -52,6 +52,7 @@ int isoburn_new(struct isoburn **objpt, int flag)
  o->treatment= 1;
  o->target_ropts= NULL;
  o->new_wopts= NULL;
+ o->fabricated_disc_status= BURN_DISC_UNREADY;
  for(i=0;i<65536;i++)
    o->target_iso_head[i]= 0;
  o->target_volset= NULL;

libisoburn/isoburn.h

@@ -41,6 +41,10 @@ struct isoburn {
  /* Aligned start address to be used for processing (counted in blocks) */
  int nwa;
 
+ /* Eventual freely fabricated isoburn_disc_get_status().
+    BURN_DISC_UNREADY means that normally emulated status is in effect.
+ */
+ enum burn_disc_status fabricated_disc_status;
 
  /* --- Vreixo's part --- */
 

libisoburn/isofs_wrap.c

@@ -96,6 +96,12 @@ int isoburn_read_volset(struct burn_drive *d, struct isoburn_read_opts *read_opt
  if (ret < 0)
    return 0;
 
+ if (o->fabricated_disc_status == BURN_DISC_BLANK) {
+   // FIXME construct an empty volset!!
+   *volset = NULL;
+   return 1;
+ }
+
  ret = isoburn_disc_get_msc1(d, &ropts.block);
  if (ret < 0)
    return -1;
@@ -216,9 +222,9 @@ int isoburn_start_emulation(struct isoburn *o, int flag)
  /* sanity check */
  if (pvm->vol_desc_type[0] != 1 || pvm->vol_desc_version[0] != 1 
      || pvm->file_structure_version[0] != 1 ) {
-   // TODO unsupported image type, maybe not image or damaged image
-   // should this be an error?
-   return -2;
+   // TODO for now I treat this as a full disc
+   o->fabricated_disc_status= BURN_DISC_FULL;
+   return 1;
  }
 
  if (!strncmp((char*)pvm->std_identifier, "CD001", 5)) {
@@ -228,16 +234,16 @@ int isoburn_start_emulation(struct isoburn *o, int flag)
    size = (off_t) iso_read_lsb(pvm->vol_space_size, 4);
    size *= (off_t) 2048; /* block size in bytes */
    isoburn_set_start_byte(o, size, 0);
+   o->fabricated_disc_status= BURN_DISC_APPENDABLE;
  } else if (!strncmp((char*)pvm->std_identifier, "CDXX1", 5)) {
 
    /* empty image */
    isoburn_set_start_byte(o, (off_t) 0, 0);
+   o->fabricated_disc_status= BURN_DISC_BLANK;
  } else {
-   // TODO not valid iso image
-   // should this be an error?
-   return -2;
+   // TODO for now I treat this as a full disc
+   o->fabricated_disc_status= BURN_DISC_FULL;
  }
- 
  return 1;
 }