Module ipc_payload 

Typed repr(C) payload structs for fixed-size IPC messages.

Each struct derives zerocopy’s FromBytes + IntoBytes + Immutable, enabling safe zero-cost cast to/from [IpcMessage] payloads via [encode_fixed] / [decode_fixed].

Conventions

• All sizes are ≤ 48 bytes (the payload capacity).
• Variable-length path/data fields use an InlineBlobHeader prefix.
• status == 0 means success; non-zero is an errno-compatible error code.
• Padding fields are named _pad or _reserved and must be zero.

Wire format

Messages are sent through IPC ports or channels as raw bytes. The msg_type field in the IpcMessage header identifies the operation. The payload field contains the struct-specific data.

Example

use strat9_abi::ipc_codec::{encode_fixed, decode_fixed, put_str, InlineBlobHeader};
use strat9_abi::ipc_payload::{OpenRequest, OpenReply};

// Encode an open request with path "/tmp/test"
let mut msg = encode_fixed(0x01, &OpenRequest {
    flags: 0x02,  // WRITE
    path_hdr: InlineBlobHeader { len: 10, kind: 0 },
});
put_str(&mut msg.payload, 8, "/tmp/test").unwrap();

// Decode the reply
let reply: &OpenReply = decode_fixed(&reply_msg).unwrap();
assert_eq!(reply.status, 0); // success

Macros

assert_payload_size 🔒

Structs

CloseRequest

Close request.

CreateReply

Create reply.

CreateRequest

Create request (file or directory).

LseekReply

Lseek reply.

LseekRequest

Lseek request.

OpenReply

Open reply.

OpenRequest

Open request.

ReadReply

Read reply prefix (variable-length data follows at offset 8).

ReadRequest

Read request.

StatRequest

Stat request.

StatusReply

Minimal reply carrying only a status code.

TcpConnectReply

TCP connect reply.

TcpConnectRequest

TCP connect request.

WriteReply

Write reply.

WriteRequest

Write request with variable-length inline data.