Function io_uring_recvmsg_validate 

pub unsafe fn io_uring_recvmsg_validate(
    buf: *mut c_void,
    buf_len: c_int,
    msgh: *mut msghdr,
) -> *mut io_uring_recvmsg_out

Access data from multishot recvmsg

DESCRIPTION

These functions are used to access data in the payload delivered by io_uring_prep_recvmsg_multishot.

msgh should point to the struct msghdr submitted with the request.

io_uring_recvmsg_validate will validate a buffer delivered by io_uring_prep_recvmsg_multishot and extract the io_uring_recvmsg_out if it is valid, returning a pointer to it or else NULL.

The structure is defined as follows:

struct io_uring_recvmsg_out {
        __u32 namelen;    /* Name byte count as would have been populated
                           * by recvmsg(2) */
        __u32 controllen; /* Control byte count */
        __u32 payloadlen; /* Payload byte count as would have been returned
                           * by recvmsg(2) */
        __u32 flags;      /* Flags result as would have been populated
                           * by recvmsg(2) */
};

io_uring_recvmsg_name(3)
returns a pointer to the name in the buffer.
io_uring_recvmsg_cmsg_firsthdr(3)
returns a pointer to the first cmsg in the buffer, or NULL.
io_uring_recvmsg_cmsg_nexthdr(3)
returns a pointer to the next cmsg in the buffer, or NULL.
io_uring_recvmsg_payload(3)
returns a pointer to the payload in the buffer.
io_uring_recvmsg_payload_length(3)
Calculates the usable payload length in bytes.

SEE ALSO

io_uring_prep_recvmsg_multishot