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 1997 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
32*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */
33*0Sstevel@tonic-gate
34*0Sstevel@tonic-gate #include <unistd.h>
35*0Sstevel@tonic-gate #include <signal.h>
36*0Sstevel@tonic-gate #include <stropts.h>
37*0Sstevel@tonic-gate #include <errno.h>
38*0Sstevel@tonic-gate #include "lp.h"
39*0Sstevel@tonic-gate #include "msgs.h"
40*0Sstevel@tonic-gate
41*0Sstevel@tonic-gate extern int errno;
42*0Sstevel@tonic-gate
43*0Sstevel@tonic-gate /*
44*0Sstevel@tonic-gate * Putmsg() function
45*0Sstevel@tonic-gate * Return 0: success,
46*0Sstevel@tonic-gate * non-zero: return code of the failed putmsg() system call.
47*0Sstevel@tonic-gate * plus errno for caller to check.
48*0Sstevel@tonic-gate * NOTE: cannot do TRACE* calls if errno is expected to be returned!
49*0Sstevel@tonic-gate * TRACE* uses fprintf and destroys the content of errno.
50*0Sstevel@tonic-gate * Save errno before the TRACE* calls.
51*0Sstevel@tonic-gate */
52*0Sstevel@tonic-gate
53*0Sstevel@tonic-gate int
Putmsg(MESG * mdp,strbuf_t * ctlp,strbuf_t * datap,int flags)54*0Sstevel@tonic-gate Putmsg (MESG *mdp, strbuf_t *ctlp, strbuf_t *datap, int flags)
55*0Sstevel@tonic-gate {
56*0Sstevel@tonic-gate int i;
57*0Sstevel@tonic-gate int rtncode;
58*0Sstevel@tonic-gate int count;
59*0Sstevel@tonic-gate struct pollfd fds;
60*0Sstevel@tonic-gate
61*0Sstevel@tonic-gate fds.fd = mdp->writefd;
62*0Sstevel@tonic-gate fds.events = POLLOUT;
63*0Sstevel@tonic-gate fds.revents = 0;
64*0Sstevel@tonic-gate
65*0Sstevel@tonic-gate (void) poll(&fds, 1, 1000);
66*0Sstevel@tonic-gate if (fds.revents & (POLLHUP | POLLERR | POLLNVAL)) {
67*0Sstevel@tonic-gate errno = EBADF;
68*0Sstevel@tonic-gate return (-1);
69*0Sstevel@tonic-gate }
70*0Sstevel@tonic-gate
71*0Sstevel@tonic-gate if (!(fds.revents & POLLOUT)) {
72*0Sstevel@tonic-gate errno = EAGAIN;
73*0Sstevel@tonic-gate return (-1);
74*0Sstevel@tonic-gate }
75*0Sstevel@tonic-gate
76*0Sstevel@tonic-gate rtncode = putmsg (mdp->writefd, ctlp, datap, flags);
77*0Sstevel@tonic-gate return (rtncode);
78*0Sstevel@tonic-gate }
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate int
Getmsg(MESG * mdp,strbuf_t * ctlp,strbuf_t * datap,int * flagsp)81*0Sstevel@tonic-gate Getmsg (MESG *mdp, strbuf_t *ctlp, strbuf_t *datap, int *flagsp)
82*0Sstevel@tonic-gate {
83*0Sstevel@tonic-gate int rtncode;
84*0Sstevel@tonic-gate
85*0Sstevel@tonic-gate rtncode = getmsg (mdp->readfd, ctlp, datap, flagsp);
86*0Sstevel@tonic-gate return (rtncode);
87*0Sstevel@tonic-gate }
88*0Sstevel@tonic-gate
89*0Sstevel@tonic-gate char AuthCode[HEAD_AUTHCODE_LEN];
90*0Sstevel@tonic-gate static void (*callers_sigpipe_trap)() = SIG_DFL;
91*0Sstevel@tonic-gate
92*0Sstevel@tonic-gate
93*0Sstevel@tonic-gate /*
94*0Sstevel@tonic-gate ** Function: static int read3_2( MESG *, char *, int)
95*0Sstevel@tonic-gate ** Args: message descriptor
96*0Sstevel@tonic-gate ** message buffer (var)
97*0Sstevel@tonic-gate ** buffer size
98*0Sstevel@tonic-gate ** Return: 0 for sucess, -1 for failure
99*0Sstevel@tonic-gate **
100*0Sstevel@tonic-gate ** This performs a 3.2 HPI style read_fifo on the pipe referanced
101*0Sstevel@tonic-gate ** in the message descriptor. If a message is found, it is returned
102*0Sstevel@tonic-gate ** in message buffer.
103*0Sstevel@tonic-gate */
read3_2(MESG * md,char * msgbuf,int size)104*0Sstevel@tonic-gate int read3_2 ( MESG * md, char *msgbuf, int size )
105*0Sstevel@tonic-gate {
106*0Sstevel@tonic-gate short type;
107*0Sstevel@tonic-gate
108*0Sstevel@tonic-gate if (md->type == MD_USR_FIFO)
109*0Sstevel@tonic-gate (void) Close (Open(md->file, O_RDONLY, 0));
110*0Sstevel@tonic-gate
111*0Sstevel@tonic-gate do
112*0Sstevel@tonic-gate {
113*0Sstevel@tonic-gate switch (read_fifo(md->readfd, msgbuf, size))
114*0Sstevel@tonic-gate {
115*0Sstevel@tonic-gate case -1:
116*0Sstevel@tonic-gate return (-1);
117*0Sstevel@tonic-gate
118*0Sstevel@tonic-gate case 0:
119*0Sstevel@tonic-gate /*
120*0Sstevel@tonic-gate ** The fifo was empty and we have O_NDELAY set,
121*0Sstevel@tonic-gate ** or the Spooler closed our FIFO.
122*0Sstevel@tonic-gate ** We don't set O_NDELAY in the user process,
123*0Sstevel@tonic-gate ** so that should never happen. But be warned
124*0Sstevel@tonic-gate ** that we can't tell the difference in some versions
125*0Sstevel@tonic-gate ** of the UNIX op. sys.!!
126*0Sstevel@tonic-gate **
127*0Sstevel@tonic-gate */
128*0Sstevel@tonic-gate errno = EPIPE;
129*0Sstevel@tonic-gate return (-1);
130*0Sstevel@tonic-gate }
131*0Sstevel@tonic-gate
132*0Sstevel@tonic-gate if ((type = stoh(msgbuf + HEAD_TYPE)) < 0 || LAST_MESSAGE < type)
133*0Sstevel@tonic-gate {
134*0Sstevel@tonic-gate errno = ENOMSG;
135*0Sstevel@tonic-gate return (-1);
136*0Sstevel@tonic-gate }
137*0Sstevel@tonic-gate }
138*0Sstevel@tonic-gate while (type == I_QUEUE_CHK);
139*0Sstevel@tonic-gate
140*0Sstevel@tonic-gate (void)memcpy (AuthCode, msgbuf + HEAD_AUTHCODE, HEAD_AUTHCODE_LEN);
141*0Sstevel@tonic-gate
142*0Sstevel@tonic-gate /*
143*0Sstevel@tonic-gate ** Get the size from the 3.2 HPI message
144*0Sstevel@tonic-gate ** minus the size of the control data
145*0Sstevel@tonic-gate ** Copy the actual message
146*0Sstevel@tonic-gate ** Reset the message size.
147*0Sstevel@tonic-gate */
148*0Sstevel@tonic-gate size = stoh(msgbuf + HEAD_SIZE) - EXCESS_3_2_LEN;
149*0Sstevel@tonic-gate memmove(msgbuf, msgbuf + HEAD_SIZE, size);
150*0Sstevel@tonic-gate (void) htos(msgbuf + MESG_SIZE, size);
151*0Sstevel@tonic-gate return(0);
152*0Sstevel@tonic-gate }
153*0Sstevel@tonic-gate
write3_2(MESG * md,char * msgbuf,int size)154*0Sstevel@tonic-gate int write3_2 ( MESG * md, char * msgbuf, int size )
155*0Sstevel@tonic-gate {
156*0Sstevel@tonic-gate char tmpbuf [MSGMAX + EXCESS_3_2_LEN];
157*0Sstevel@tonic-gate int rval;
158*0Sstevel@tonic-gate
159*0Sstevel@tonic-gate
160*0Sstevel@tonic-gate (void) memmove(tmpbuf + HEAD_SIZE, msgbuf, size);
161*0Sstevel@tonic-gate (void) htos(tmpbuf + HEAD_SIZE, size + EXCESS_3_2_LEN);
162*0Sstevel@tonic-gate (void) memcpy (tmpbuf + HEAD_AUTHCODE, AuthCode, HEAD_AUTHCODE_LEN);
163*0Sstevel@tonic-gate
164*0Sstevel@tonic-gate callers_sigpipe_trap = signal(SIGPIPE, SIG_IGN);
165*0Sstevel@tonic-gate
166*0Sstevel@tonic-gate rval = write_fifo(md->writefd, tmpbuf, size + EXCESS_3_2_LEN);
167*0Sstevel@tonic-gate
168*0Sstevel@tonic-gate (void) signal(SIGPIPE, callers_sigpipe_trap);
169*0Sstevel@tonic-gate
170*0Sstevel@tonic-gate
171*0Sstevel@tonic-gate return (rval);
172*0Sstevel@tonic-gate }
173