- Read a 32 byte Hook State key from the
- Write the data (value) at that key to the buffer pointed to by
int64_t state ( uint32_t write_ptr, uint32_t write_len, uint32_t kread_ptr, uint32_t kread_len );
#define SBUF(str) (uint32_t)(str), sizeof(str) if (state(SBUF(vault), SBUF(vault_key)) != 16) rollback(SBUF("Error: could not read state!"), 1);
A pointer to the buffer to write the data in the Hook State into.
The length of the write buffer.
Pointer to a buffer containing the Hook State key.
The length of the Hook State key. (Should be 32.)
Ensure you check the return value. A state lookup can fail of a range of reasons and the buffer will then contain whatever it did before the call (typically all zeros).
The number of bytes written to the write buffer.
If negative, an error: