FSPXI:WriteFileSHA256
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Request
| 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
| 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.