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Annotation of xinu/sys/dgclose.c, revision 1.1

1.1     ! root        1: /* dgclose.c - dgclose */
        !             2: 
        !             3: #include <conf.h>
        !             4: #include <kernel.h>
        !             5: #include <proc.h>
        !             6: #include <network.h>
        !             7: 
        !             8: /*------------------------------------------------------------------------
        !             9:  *  dgclose  -  close a datagram pseudo device, making it available again
        !            10:  *------------------------------------------------------------------------
        !            11:  */
        !            12: dgclose(devptr)
        !            13: struct devsw   *devptr;
        !            14: {
        !            15:        PStype  ps;
        !            16:        struct  dgblk   *dgptr;
        !            17:        struct  netq    *nqptr;
        !            18:        int     nq;
        !            19: 
        !            20:        dgptr = (struct dgblk *) devptr->dvioblk;
        !            21:        disable(ps);
        !            22:        nq = dgptr->dg_netq;
        !            23:        nqptr = &Net.netqs[nq];
        !            24:        nqptr->valid = FALSE;
        !            25:        nqptr->uport = -1;
        !            26:        nqptr->pid = BADPID;
        !            27:        dgptr->dg_state = DG_FREE;
        !            28:        restore(ps);
        !            29:        return(OK);
        !            30: }
        !            31: 

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