New API calls isoburn_igopt_set_gpt_guid(), isoburn_igopt_get_gpt_guid()

libisoburn/libisoburn.h

@@ -1987,6 +1987,47 @@ int isoburn_igopt_set_part_like_isohybrid(struct isoburn_imgen_opts *opts,
 int isoburn_igopt_get_part_like_isohybrid(struct isoburn_imgen_opts *opts,
                                           int *alike);
 
+/** Control whether the emerging GPT gets a pseudo-randomly generated disk GUID
+    or whether it gets a user supplied GUID.
+    The partition GUIDs will be generated in a reproducible way by exoring a
+    little-endian 32 bit counter with the disk GUID beginning at byte offset 9.
+    @since 1.4.6
+    @param opts
+           The option set to be manipulated.
+    @param guid
+           16 bytes of user supplied GUID.
+           The upper 4 bit of guid[6] and guid[7] should bear the value 4 to
+           express the version 4 in both endiannesses. Bit 7 of byte[8] should
+           be set to 1 and bit 6 be set to 0, in order to express the RFC 4122
+           variant of GUID, where version 4 means "random".
+    @param mode
+           0 = ignore parameter guid and produce the GPT disk GUID by a
+               pseudo-random algorithm. This is the default setting.
+           1 = use parameter guid as GPT disk GUID
+           2 = ignore parameter guid and derive the GPT disk GUID from
+               parameter uuid of isoburn_igopt_set_pvd_times().
+               The 16 bytes of uuid get copied and bytes 6, 7, 8 get their
+               upper bits changed to comply to RFC 4122.
+               If no such uuid is given when ISO production starts, then
+               mode 2 defaults to mode 0.
+*/ 
+int isoburn_igopt_set_gpt_guid(struct isoburn_imgen_opts *opts,
+                               uint8_t guid[16], int mode);
+
+/** Inquire the current setting of isoburn_igopt_set_gpt_guid().
+    @since 1.4.6
+    @param opts
+           The option set to be inquired.
+    @param guid
+           Returns the current guid if current mode is 1.
+    @param mode
+           Returns the current value.
+    @return
+           <=0 = error, 1 = success
+*/
+int isoburn_igopt_get_gpt_guid(struct isoburn_imgen_opts *opts,
+                               uint8_t guid[16], int *mode);
+
 
 /** Set a name for the system area. This setting is ignored unless system area
     type 3 "SUN Disk Label" is in effect by iso_write_opts_set_system_area().