1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 1994 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.6 */
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate # include <unistd.h>
34*0Sstevel@tonic-gate # include <errno.h>
35*0Sstevel@tonic-gate # include <stdlib.h>
36*0Sstevel@tonic-gate
37*0Sstevel@tonic-gate #if defined(__STDC__)
38*0Sstevel@tonic-gate # include <stdarg.h>
39*0Sstevel@tonic-gate #else
40*0Sstevel@tonic-gate # include <varargs.h>
41*0Sstevel@tonic-gate #endif
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gate # include "lp.h"
44*0Sstevel@tonic-gate # include "msgs.h"
45*0Sstevel@tonic-gate
46*0Sstevel@tonic-gate
47*0Sstevel@tonic-gate /*
48*0Sstevel@tonic-gate ** Size and pointer for mgetm()
49*0Sstevel@tonic-gate */
50*0Sstevel@tonic-gate static int MBGSize = 0;
51*0Sstevel@tonic-gate static char * MBG = NULL;
52*0Sstevel@tonic-gate
53*0Sstevel@tonic-gate /*
54*0Sstevel@tonic-gate ** Size and pointer for mputm()
55*0Sstevel@tonic-gate */
56*0Sstevel@tonic-gate static int MBPSize = 0;
57*0Sstevel@tonic-gate static char * MBP = NULL;
58*0Sstevel@tonic-gate
59*0Sstevel@tonic-gate int peek3_2();
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate #if defined(__STDC__)
mgetm(MESG * md,int type,...)62*0Sstevel@tonic-gate int mgetm ( MESG * md, int type, ... )
63*0Sstevel@tonic-gate #else
64*0Sstevel@tonic-gate int mgetm (md, type, va_alist)
65*0Sstevel@tonic-gate MESG *md;
66*0Sstevel@tonic-gate int type;
67*0Sstevel@tonic-gate va_dcl
68*0Sstevel@tonic-gate #endif
69*0Sstevel@tonic-gate {
70*0Sstevel@tonic-gate va_list vp;
71*0Sstevel@tonic-gate int ret;
72*0Sstevel@tonic-gate int needsize;
73*0Sstevel@tonic-gate
74*0Sstevel@tonic-gate #if defined(__STDC__)
75*0Sstevel@tonic-gate va_start(vp, type);
76*0Sstevel@tonic-gate #else
77*0Sstevel@tonic-gate va_start(vp);
78*0Sstevel@tonic-gate #endif
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate needsize = mpeek(md);
81*0Sstevel@tonic-gate if (needsize <=0 || needsize > MSGMAX)
82*0Sstevel@tonic-gate needsize = MSGMAX;
83*0Sstevel@tonic-gate if (needsize > MBGSize)
84*0Sstevel@tonic-gate {
85*0Sstevel@tonic-gate if (MBG)
86*0Sstevel@tonic-gate Free(MBG);
87*0Sstevel@tonic-gate if ((MBG = (char *)Malloc(needsize)) == NULL)
88*0Sstevel@tonic-gate {
89*0Sstevel@tonic-gate MBGSize = 0;
90*0Sstevel@tonic-gate MBG = NULL;
91*0Sstevel@tonic-gate errno = ENOMEM;
92*0Sstevel@tonic-gate return(-1);
93*0Sstevel@tonic-gate }
94*0Sstevel@tonic-gate MBGSize = needsize;
95*0Sstevel@tonic-gate }
96*0Sstevel@tonic-gate if (mread(md, MBG, MBGSize) < 0)
97*0Sstevel@tonic-gate return(-1);
98*0Sstevel@tonic-gate
99*0Sstevel@tonic-gate ret = _getmessage(MBG, type, vp);
100*0Sstevel@tonic-gate
101*0Sstevel@tonic-gate va_end(vp);
102*0Sstevel@tonic-gate
103*0Sstevel@tonic-gate return(ret);
104*0Sstevel@tonic-gate }
105*0Sstevel@tonic-gate
106*0Sstevel@tonic-gate #if defined(__STDC__)
mputm(MESG * md,int type,...)107*0Sstevel@tonic-gate int mputm ( MESG * md, int type, ... )
108*0Sstevel@tonic-gate #else
109*0Sstevel@tonic-gate int mputm (md, type, va_alist)
110*0Sstevel@tonic-gate MESG *md;
111*0Sstevel@tonic-gate int type;
112*0Sstevel@tonic-gate va_dcl
113*0Sstevel@tonic-gate #endif
114*0Sstevel@tonic-gate {
115*0Sstevel@tonic-gate va_list vp;
116*0Sstevel@tonic-gate int needsize;
117*0Sstevel@tonic-gate
118*0Sstevel@tonic-gate #if defined(__STDC__)
119*0Sstevel@tonic-gate va_start(vp, type);
120*0Sstevel@tonic-gate #else
121*0Sstevel@tonic-gate va_start(vp);
122*0Sstevel@tonic-gate #endif
123*0Sstevel@tonic-gate needsize = _putmessage(NULL, type, vp);
124*0Sstevel@tonic-gate va_end(vp);
125*0Sstevel@tonic-gate if (needsize <= 0)
126*0Sstevel@tonic-gate return(-1);
127*0Sstevel@tonic-gate
128*0Sstevel@tonic-gate if (needsize > MBPSize)
129*0Sstevel@tonic-gate {
130*0Sstevel@tonic-gate if (MBP)
131*0Sstevel@tonic-gate Free(MBP);
132*0Sstevel@tonic-gate if ((MBP = (char *)Malloc(needsize)) == NULL)
133*0Sstevel@tonic-gate {
134*0Sstevel@tonic-gate MBPSize = 0;
135*0Sstevel@tonic-gate MBP = NULL;
136*0Sstevel@tonic-gate errno = ENOMEM;
137*0Sstevel@tonic-gate return(-1);
138*0Sstevel@tonic-gate }
139*0Sstevel@tonic-gate MBPSize = needsize;
140*0Sstevel@tonic-gate }
141*0Sstevel@tonic-gate
142*0Sstevel@tonic-gate #if defined(__STDC__)
143*0Sstevel@tonic-gate va_start(vp, type);
144*0Sstevel@tonic-gate #else
145*0Sstevel@tonic-gate va_start(vp);
146*0Sstevel@tonic-gate #endif
147*0Sstevel@tonic-gate needsize = _putmessage(MBP, type, vp);
148*0Sstevel@tonic-gate va_end(vp);
149*0Sstevel@tonic-gate if (needsize <= 0)
150*0Sstevel@tonic-gate return(-1);
151*0Sstevel@tonic-gate
152*0Sstevel@tonic-gate
153*0Sstevel@tonic-gate return(mwrite(md, MBP));
154*0Sstevel@tonic-gate }
155*0Sstevel@tonic-gate
156*0Sstevel@tonic-gate #if defined(__STDC__)
__mbfree(void)157*0Sstevel@tonic-gate void __mbfree ( void )
158*0Sstevel@tonic-gate #else
159*0Sstevel@tonic-gate void __mbfree ()
160*0Sstevel@tonic-gate #endif
161*0Sstevel@tonic-gate {
162*0Sstevel@tonic-gate MBGSize = MBPSize = 0;
163*0Sstevel@tonic-gate if (MBG)
164*0Sstevel@tonic-gate Free (MBG);
165*0Sstevel@tonic-gate if (MBP)
166*0Sstevel@tonic-gate Free (MBP);
167*0Sstevel@tonic-gate MBG = MBP = NULL;
168*0Sstevel@tonic-gate }
169*0Sstevel@tonic-gate
170*0Sstevel@tonic-gate #if defined(__STDC__)
mpeek(MESG * md)171*0Sstevel@tonic-gate short mpeek ( MESG * md )
172*0Sstevel@tonic-gate #else
173*0Sstevel@tonic-gate short mpeek (md)
174*0Sstevel@tonic-gate MESG *md;
175*0Sstevel@tonic-gate #endif
176*0Sstevel@tonic-gate {
177*0Sstevel@tonic-gate int size;
178*0Sstevel@tonic-gate
179*0Sstevel@tonic-gate if (md->type == MD_USR_FIFO || md->type == MD_SYS_FIFO)
180*0Sstevel@tonic-gate return(peek3_2(md->readfd) - EXCESS_3_2_LEN);
181*0Sstevel@tonic-gate
182*0Sstevel@tonic-gate if (ioctl(md->readfd, I_NREAD, &size))
183*0Sstevel@tonic-gate return((short)size);
184*0Sstevel@tonic-gate
185*0Sstevel@tonic-gate return(-1);
186*0Sstevel@tonic-gate }
187