Confirmed users
394
edits
Software Update:MAR: Difference between revisions
→Constraints
| Line 68: | Line 68: | ||
* No signature is more than 2048 bytes long. | * No signature is more than 2048 bytes long. | ||
== Additional sections == | |||
Additional MAR file sections may defined in the future. These sections must follow directly after the SIGNATURES section. | |||
Each additional block must be in the following format: | |||
4 bytes: Block separator {0, 0, 0, 0} (To disambiguate from the INDEX block) | |||
4 bytes: Block identifier | 4 bytes: Block identifier | ||
4 bytes: Block size (Z) | 4 bytes: Block size (Z) | ||
Z bytes: The rest of the block. | Z bytes: The rest of the block. | ||
The block separator is so the MAR reader code knows whether it is reading an additional block or if it is reading the INDEX.IndexSize. | |||
The Block identifier is a value used to uniquely identify additional blocks so that they may be optionally added in any order. | |||
=== Product Information Block === | |||
4 bytes: Block separator {0, 0, 0, 0} (To disambiguate from the INDEX block) | |||
4 bytes: Block identifier | 4 bytes: Block identifier | ||
4 bytes: Block size (Z) | 4 bytes: Block size (Z) | ||
Z bytes: The rest of the block. | Z bytes: The rest of the block. | ||
== Source Code == | == Source Code == | ||