FSPXI:WriteFileSHA256
Revision as of 21:30, 5 June 2022 by TimmSkiller (talk | contribs) (Created page with "=Request= {| class="wikitable" border="1" |- ! Index Word ! Description |- | 0 | Header code [0x004E0204] |- | 1 | File handle lower word |- | 2 | File handle upper word |-...")
Request[edit]
Index Word | Description |
---|---|
0 | Header code [0x004E0204] |
1 | File handle lower word |
2 | File handle upper word |
3 | Offset lower word |
4 | Offset upper word |
5 | Size of write buffer |
6 | Alignment size (always 0x00001000) |
7 | Size of hashtable |
8 | Flush flags |
9 | (size of hashtable << 8) | 6 |
10 | Pointer to hashtable |
11 | (size of write buffer << 8) | 0x14 |
12 | Pointer to write buffer |
Response[edit]
Index Word | Description |
---|---|
0 | Header code |
1 | Result code |
2 | Size written |
3 | 4 |
The data written are stored in the write buffer. For each 0x1000-byte block written, a SHA256 hash of the block is stored in the hashtable.
It is unknown how hashing behaves if the write offset/size are not aligned to a 0x1000-byte boundary.