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Introduced checksum tag for relocated 64 kB superblock on overwriteable media.

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This commit is contained in:
Thomas Schmitt
2009-08-17 17:22:31 +02:00
parent 07a67a59e7
commit 868005ed0e
6 changed files with 172 additions and 48 deletions
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16
libisofs/libisofs.h
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@@ -5057,6 +5057,7 @@ int iso_file_get_md5(IsoImage *image, IsoFile *file, char md5[16], int flag);
* 1= session tag
* 2= superblock tag
* 3= tree tag
* 4= relocated 64 kB superblock tag (at LBA 0 of overwriteable media)
* @param pos
* Returns the LBA where the tag supposes itself to be stored.
* If this does not match the data block LBA then the tag might be
@@ -5071,7 +5072,13 @@ int iso_file_get_md5(IsoImage *image, IsoFile *file, char md5[16], int flag);
* covered by parameter md5.
* @param next_tag
* Returns the predicted block address of the next tag.
* Valid only with return values 2 and 3 and if not 0.
* next_tag is valid only if not 0 and only with return values 2, 3, 4.
* With tag types 2 and 3, reading shall go on sequentially and the MD5
* computation shall continue up to that address.
* With tag type 4, reading shall resume either at LBA 32 for the first
* session or at the given address for the session which is to be loaded
* by default. In both cases the MD5 computation shall be re-started from
* scratch.
* @param md5
* Returns 16 byte of MD5 checksum.
* @param flag
@@ -5081,12 +5088,13 @@ int iso_file_get_md5(IsoImage *image, IsoFile *file, char md5[16], int flag);
* 1= session tag
* 2= superblock tag
* 3= tree tag
* 4= relocated superblock tag
* @return
* 0= not a checksum tag, return parameters are invalid
* 1= checksum tag found, return parameters arevalid
* 1= checksum tag found, return parameters are valid
* <0= error
* return parameters are valid with error ISO_MD5_AREA_CORRUPTED
* but not trustworthy because the tag seems corrupted.
* (return parameters are valid with error ISO_MD5_AREA_CORRUPTED
* but not trustworthy because the tag seems corrupted)
*
* @since 0.6.22
*/