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    SubjectRe: your mail
    On Fri, 28 Jan 2000, Manpreet Singh wrote:

    > Hi there !!
    > I have a small problem. Could you please tell where can I find the
    > bindings of operations in the kernel code. For instance, to what does
    > 'recvmsg' in the net module bind to in the case of an INET socket using
    > TCP and ipv4 and how does it finally reach tcp_recvmsg ? Or more
    > generally, what is the path from 'sock_read' to 'tcp_recvmsg' and where
    > are the bindings specified ?
    > I would be appreciative of your efforts.
    > Thanks,
    > Manpreet.

    ../linux/net/socket.c handles most of the Socket API conversions
    (bindings). This interfaces to lower-level code, most of which
    is in ../linux/net/ipv4.

    Just `grep` through the kernel sources to follow the path. Most
    of the names are similar. For instance:

    ./ipv4/tcp.c: * tcp_recvmsg has given to the user so far, it speeds up the
    ./ipv4/tcp.c:int tcp_recvmsg(struct sock *sk, struct msghdr *msg,
    ./ipv4/tcp_ipv4.c: tcp_recvmsg, /* recvmsg */
    ./ipv6/tcp_ipv6.c: tcp_recvmsg, /* recvmsg */

    Dick Johnson

    Penguin : Linux version 2.3.39 on an i686 machine (800.63 BogoMips).

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