hook_hash
Retreive the 32 byte namespace biased SHA512H of the currently executing Hook
Behaviour
Look up the hash of the hook installed on hook account at position
hook_no
Write the 32 byte hash to
write_ptr
Definition
int64_t hook_hash (
uint32_t write_ptr,
uint32_t write_len,
int32_t hook_no
);
Example
uint8_t hash[32];
int64_t bytes_written =
hook_hash(hash, 32, -1);
Parameters
Name
Type
Description
write_ptr
uint32_t
Pointer to a buffer of a suitable size to store the output. Should be at least 32 bytes.
write_len
uint32_t
Length of the output buffer.
hook_no
int32_t
The position in the hook chain the hook is located at, or -1 for the currently executing hook.
Return Code
Type
Description
int64_t
The number of bytes written
If negative, an error:
OUT_OF_BOUNDS
- pointers/lengths specified outside of hook memory.
DOESNT_EXIST
- The specified hook sequence number doesn't exist in the hook chain.
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