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    SubjectRe: description of struct sockaddr
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    On Sun, 2004-12-26 at 16:40 +0000, Karel Kulhavy wrote:
    > On Tue, Nov 23, 2004 at 11:11:31PM +0100, Jan Engelhardt wrote:
    > > >Hello
    > > >
    > > >man netdevice talks about struct sockaddr, but neither describes it,
    > > >nor provides a link to descriptio, nor the "SEE ALSO" items
    > > >(ip(7), proc(7), rnetlink(7)) provide the necessary information.
    > > >
    > > >"The hardware address is specified in a struct sockaddr".
    > >
    > > I don't think so. The hardware address is, well, specific to the hardware (like
    > > Ethernet, for example). IP/TCP/UDP however is not limited to Ethernet. And
    > > 'sockaddr' clearly is something that does not deal with hardware.
    >
    > It is a sentence from man netdevice. Should I send a bugreport to the manpage
    > maintainer?

    No. struct sockaddr basically holds only the common field "sa_family"
    and an array of char which contains the hardware specific data
    (see /usr/include/linux/socket.h). It is used by the socket API.
    For different hardware types you have other structs, e.g. you have
    struct sockaddr_in for IP sockets and struct sockaddr_un for Unix domain
    sockets.
    sockaddr_in has additionally to the common fields a field for the IP
    address "sin_address" and "sin_port" for the port. sockaddr_un has
    simply the field "sun_path" for the name in the filesystem.

    Just grep for them under /usr/include...

    Bernd
    --
    Firmix Software GmbH http://www.firmix.at/
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