/*
* Given a request with it's body already composed,
* rewind to the start and fill in the SMB header.
* This is called after the request is enqueued,
* so we have the final MID, seq num. etc.
*/
void
smb_rq_fillhdr(struct smb_rq *rqp)
{
struct mbchain mbtmp, *mbp = &mbtmp;
mblk_t *m;
/*
* Fill in the SMB header using a dup of the first mblk,
* which points at the same data but has its own wptr,
* so we can rewind without trashing the message.
*/
m = dupb(rqp->sr_rq.mb_top);
m->b_wptr = m->b_rptr; /* rewind */
mb_initm(mbp, m);
mb_put_mem(mbp, SMB_SIGNATURE, 4, MB_MSYSTEM);
mb_put_uint8(mbp, rqp->sr_cmd);
mb_put_uint32le(mbp, 0); /* status */
mb_put_uint8(mbp, rqp->sr_rqflags);
mb_put_uint16le(mbp, rqp->sr_rqflags2);
mb_put_uint16le(mbp, 0); /* pid-high */
mb_put_mem(mbp, NULL, 8, MB_MZERO); /* MAC sig. (later) */
mb_put_uint16le(mbp, 0); /* reserved */
mb_put_uint16le(mbp, rqp->sr_rqtid);
mb_put_uint16le(mbp, rqp->sr_pid);
mb_put_uint16le(mbp, rqp->sr_rquid);
mb_put_uint16le(mbp, rqp->sr_mid);
/* This will free the mblk from dupb. */
mb_done(mbp);
}
/*
* Various helper functions
*/
int
mb_init(struct mbchain *mbp)
{
struct mbuf *m;
m = m_gethdr(M_WAIT, MT_DATA);
m->m_len = 0;
mb_initm(mbp, m);
return 0;
}
int
mb_init(struct mbdata *mbp, size_t size)
{
struct mbuf *m;
int error;
if ((error = m_get(size, &m)) != 0)
return error;
return mb_initm(mbp, m);
}
int
mb_init(struct mbchain *mbp)
{
struct mbuf *m;
m = m_gethdr(M_WAIT, MT_DATA);
if (m == NULL)
return ENOBUFS;
m->m_len = 0;
mb_initm(mbp, m);
return 0;
}
