ixp_serve9conn (3)

#include <ixp.h>

typedef struct Ixp9Srv Ixp9Srv;
struct Ixp9Srv {
        void* aux;
        void (*attach)(Ixp9Req*);
        void (*clunk)(Ixp9Req*);
        void (*create)(Ixp9Req*);
        void (*flush)(Ixp9Req*);
        void (*open)(Ixp9Req*);
        void (*read)(Ixp9Req*);
        void (*remove)(Ixp9Req*);
        void (*stat)(Ixp9Req*);
        void (*walk)(Ixp9Req*);
        void (*write)(Ixp9Req*);
        void (*wstat)(Ixp9Req*);
        void (*freefid)(IxpFid*);
}

typedef struct Ixp9Req Ixp9Req;
struct Ixp9Req {
        Ixp9Srv*        srv;
        IxpFid*         fid;    /* Fid structure corresponding to IxpFHdr.fid */
        IxpFid*         newfid; /* Corresponds to IxpFTWStat.newfid */
        Ixp9Req*        oldreq; /* For TFlush requests, the original request. */
        IxpFcall        ifcall; /* The incoming request fcall. */
        IxpFcall        ofcall; /* The response fcall, to be filled by handler. */
        void*           aux;    /* Arbitrary pointer, to be used by handlers. */

        /* Private members */
        ...
}

void ixp_serve9conn(IxpConn *c);

The ixp_serve9conn handles incoming 9P connections. It is ordinarily passed as the read member to ixp_listen(3) with an Ixp9Srv structure passed as the aux member. The handlers defined in the Ixp9Srv structure are called whenever a matching Fcall type is received. The handlers are expected to call ixp_respond(3) at some point, whether before they return or at some undefined point in the future. Whenever a client disconnects, libixp generates whatever flush and clunk events are required to leave the connection in a clean state and waits for all responses before freeing the connections associated data structures.

Whenever a file is closed and an IxpFid(3) is about to be freed, the freefid member is called to perform any necessary cleanup and to free any associated resources.

ixp_listen(3), ixp_respond(3), ixp_printfcall(3), IxpFcall(3), IxpFid(3)