usr/src/sys/netccitt/pk_acct.c

/*
 * Copyright (c) University of British Columbia, 1984
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Laboratory for Computation Vision and the Computer Science Department
 * of the University of British Columbia.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)pk_acct.c   7.3 (Berkeley) %G%
 */

#include "param.h
#include "systm.h"
#include "time.h"
#include "proc.h"
#include "user.h"
#include "vnode.h"
#include "kernel.h"
#include "file.h"
#include "acct.h"
#include "uio.h"
#include "socket.h"
#include "socketvar.h"

#include "../net/if.h"

#include "x25.h"
#include "pk.h"
#include "pk_var.h"
#include "x25acct.h"


struct  vnode *pkacctp;
/*
 *  Turn on packet accounting
 */

pk_accton (path)
        char *path;
{
        register struct vnode *vp = NULL;
        register struct nameidata *ndp = &u.u_nd;
        struct vnode *oacctp = pkacctp;
        int error;

        ndp -> ni_segflg = UIO_USERSPACE;
        ndp -> ni_dirp = path;
        if (error = vn_open (ndp, FREAD|FWRITE, 0))
                return (error);
        vp = ndp -> ni_vp;
        if (vp -> v_type != VREG) {
                vrele (vp);
                return (EACCES);
        }
        pkacctp = vp;
        if (oacctp)
                vrele (oacctp);
        return (0);
}

/*
 *  Turn off packet accounting
 */

pk_acctoff ()
{
        if (pkacctp) {
                vrele (pkacctp);
                pkacctp = 0;
        }
}

/*
 *  Write a record on the accounting file.
 */

pk_acct (lcp)
register struct pklcd *lcp;
{
        register struct vnode *vp;
        register struct sockaddr_x25 *sa;
        register char *src, *dst;
        register int len;
        register long etime;
        static struct x25acct acbuf;

        if ((vp = pkacctp) == 0)
                return;
        bzero ((caddr_t)&acbuf, sizeof (acbuf));
        if (lcp -> lcd_ceaddr != 0)
                sa = lcp -> lcd_ceaddr;
        else if (lcp -> lcd_craddr != 0) {
                sa = lcp -> lcd_craddr;
                acbuf.x25acct_callin = 1;
        } else
                return;

        if (sa -> x25_opts.op_flags & X25_REVERSE_CHARGE)
                acbuf.x25acct_revcharge = 1;
        acbuf.x25acct_stime = lcp -> lcd_stime;
        acbuf.x25acct_etime = time.tv_sec - acbuf.x25acct_stime;
        acbuf.x25acct_uid = u.u_uid;
        acbuf.x25acct_psize = sa -> x25_opts.op_psize;
        acbuf.x25acct_net = sa -> x25_net;
        /*
         * Convert address to bcd
         */
        src = sa -> x25_addr;
        dst = acbuf.x25acct_addr;
        for (len = 0; *src; len++)
                if (len & 01)
                        *dst++ |= *src++ & 0xf;
                else
                        *dst = *src++ << 4;
        acbuf.x25acct_addrlen = len;

        bcopy (sa -> x25_udata, acbuf.x25acct_udata,
                sizeof (acbuf.x25acct_udata));
        acbuf.x25acct_txcnt = lcp -> lcd_txcnt;
        acbuf.x25acct_rxcnt = lcp -> lcd_rxcnt;

        (void) vn_rdwr(UIO_WRITE, vp, (caddr_t)&acbuf, sizeof (acbuf),
                (off_t)0, UIO_SYSSPACE, IO_UNIT|IO_APPEND, u.u_cred, (int *)0);
}