sys/xdr/xdr_mbuf.c

65 xdrmbuf_create(XDR *xdrs, struct mbuf *m, enum xdr_op op)
69 	xdrs->x_op = op;
70 	xdrs->x_ops = &xdrmbuf_ops;
71 	xdrs->x_base = (char *) m;
74 		xdrs->x_private = m;
75 		xdrs->x_handy = m->m_len;
77 		xdrs->x_private = m;
78 		xdrs->x_handy = 0;
83 xdrmbuf_append(XDR *xdrs, struct mbuf *madd)
87 	KASSERT(xdrs->x_ops == &xdrmbuf_ops && xdrs->x_op == XDR_ENCODE,
95 	m = (struct mbuf *) xdrs->x_private;
99 	xdrs->x_private = m;
100 	xdrs->x_handy = m->m_len;
104 xdrmbuf_getall(XDR *xdrs)
108 	KASSERT(xdrs->x_ops == &xdrmbuf_ops && xdrs->x_op == XDR_DECODE,
111 	m0 = (struct mbuf *) xdrs->x_base;
112 	m = (struct mbuf *) xdrs->x_private;
117 		xdrs->x_private = NULL;
119 		xdrs->x_base = NULL;
120 		xdrs->x_private = NULL;
124 		m_adj(m, xdrs->x_handy);
131 xdrmbuf_destroy(XDR *xdrs)
134 	if (xdrs->x_op == XDR_DECODE && xdrs->x_base) {
135 		m_freem((struct mbuf *) xdrs->x_base);
136 		xdrs->x_base = NULL;
137 		xdrs->x_private = NULL;
142 xdrmbuf_getlong(XDR *xdrs, long *lp)
147 	p = xdrmbuf_inline(xdrs, sizeof(int32_t));
151 		xdrmbuf_getbytes(xdrs, (char *) &t, sizeof(int32_t));
159 xdrmbuf_putlong(xdrs, lp)
160 	XDR *xdrs;
166 	p = xdrmbuf_inline(xdrs, sizeof(int32_t));
171 		return (xdrmbuf_putbytes(xdrs, (char *) &t, sizeof(int32_t)));
176 xdrmbuf_getbytes(XDR *xdrs, char *addr, u_int len)
178 	struct mbuf *m = (struct mbuf *) xdrs->x_private;
192 		sz = m->m_len - xdrs->x_handy;
195 		bcopy(mtod(m, const char *) + xdrs->x_handy, addr, sz);
198 		xdrs->x_handy += sz;
201 		if (xdrs->x_handy == m->m_len) {
203 			xdrs->x_private = (void *) m;
204 			xdrs->x_handy = 0;
212 xdrmbuf_putbytes(XDR *xdrs, const char *addr, u_int len)
214 	struct mbuf *m = (struct mbuf *) xdrs->x_private;
219 		sz = M_TRAILINGSPACE(m) + (m->m_len - xdrs->x_handy);
222 		bcopy(addr, mtod(m, char *) + xdrs->x_handy, sz);
224 		xdrs->x_handy += sz;
225 		if (xdrs->x_handy > m->m_len)
226 			m->m_len = xdrs->x_handy;
229 		if (xdrs->x_handy == m->m_len && M_TRAILINGSPACE(m) == 0) {
237 			xdrs->x_private = (void *) m;
238 			xdrs->x_handy = 0;
246 xdrmbuf_getpos(XDR *xdrs)
248 	struct mbuf *m0 = (struct mbuf *) xdrs->x_base;
249 	struct mbuf *m = (struct mbuf *) xdrs->x_private;
258 	return (pos + xdrs->x_handy);
262 xdrmbuf_setpos(XDR *xdrs, u_int pos)
264 	struct mbuf *m = (struct mbuf *) xdrs->x_base;
272 	xdrs->x_private = (void *) m;
273 	xdrs->x_handy = pos;
279 xdrmbuf_inline(XDR *xdrs, u_int len)
281 	struct mbuf *m = (struct mbuf *) xdrs->x_private;
287 	if (xdrs->x_op == XDR_ENCODE) {
288 		available = M_TRAILINGSPACE(m) + (m->m_len - xdrs->x_handy);
290 		available = m->m_len - xdrs->x_handy;
294 		p = mtod(m, char *) + xdrs->x_handy;
297 		xdrs->x_handy += len;
298 		if (xdrs->x_handy > m->m_len)
299 			m->m_len = xdrs->x_handy;