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62810009 | 1 | /* |
997fbfa7 | 2 | * "$Id: scsi-irix.c,v 1.2 2002/12/17 18:56:33 swdev Exp $" |
62810009 | 3 | * |
4 | * IRIX SCSI printer support for the Common UNIX Printing System (CUPS). | |
5 | * | |
997fbfa7 | 6 | * Copyright 2003 by Easy Software Products, all rights reserved. |
62810009 | 7 | * |
8 | * Redistribution and use in source and binary forms, with or | |
9 | * without modification, are permitted provided that the | |
10 | * following conditions are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above | |
13 | * copyright notice, this list of conditions and the | |
14 | * following disclaimer. | |
15 | * | |
16 | * 2. Redistributions in binary form must reproduce the | |
17 | * above copyright notice, this list of conditions and | |
18 | * the following disclaimer in the documentation and/or | |
19 | * other materials provided with the distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use | |
22 | * of this software must display the following | |
23 | * acknowledgement: | |
24 | * | |
25 | * This product includes software developed by Easy | |
26 | * Software Products. | |
27 | * | |
28 | * 4. The name of Easy Software Products may not be used to | |
29 | * endorse or promote products derived from this software | |
30 | * without specific prior written permission. | |
31 | * | |
32 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS | |
33 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, | |
34 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
35 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
36 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS | |
37 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
38 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
39 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
40 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
41 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
42 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
43 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
44 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
45 | * DAMAGE. | |
46 | * | |
47 | * Contents: | |
48 | * | |
49 | * list_devices() - List the available SCSI printer devices. | |
50 | * print_device() - Print a file to a SCSI device. | |
51 | */ | |
52 | ||
53 | /* | |
54 | * Include necessary headers. | |
55 | */ | |
56 | ||
57 | #include <bstring.h> /* memcpy() and friends */ | |
58 | #include <sys/dsreq.h> /* SCSI interface stuff */ | |
59 | ||
60 | ||
61 | /* | |
62 | * 'list_devices()' - List the available SCSI printer devices. | |
63 | */ | |
64 | ||
65 | void | |
66 | list_devices(void) | |
67 | { | |
68 | puts("direct scsi \"Unknown\" \"SCSI Printer\""); | |
69 | } | |
70 | ||
71 | ||
72 | /* | |
73 | * 'print_device()' - Print a file to a SCSI device. | |
74 | */ | |
75 | ||
76 | int /* O - Print status */ | |
77 | print_device(const char *resource, /* I - SCSI device */ | |
78 | int fd, /* I - File to print */ | |
79 | int copies) /* I - Number of copies to print */ | |
80 | { | |
81 | int scsi_fd; /* SCSI file descriptor */ | |
82 | char buffer[8192]; /* Data buffer */ | |
83 | int bytes; /* Number of bytes */ | |
84 | int try; /* Current try */ | |
85 | dsreq_t scsi_req; /* SCSI request */ | |
86 | char scsi_cmd[6], /* SCSI command data */ | |
87 | scsi_sense[32]; /* SCSI sense data */ | |
88 | #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) | |
89 | struct sigaction action; /* Actions for POSIX signals */ | |
90 | #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ | |
91 | ||
92 | ||
93 | /* | |
94 | * Make sure we have a valid resource name... | |
95 | */ | |
96 | ||
97 | if (strncmp(resource, "/dev/scsi/", 10) != 0) | |
98 | { | |
99 | fprintf(stderr, "ERROR: Bad SCSI device file \"%s\"!\n", resource); | |
100 | return (1); | |
101 | } | |
102 | ||
103 | /* | |
104 | * Open the SCSI device file... | |
105 | */ | |
106 | ||
107 | do | |
108 | { | |
109 | if ((scsi_fd = open(resource, O_RDWR | O_EXCL)) == -1) | |
110 | { | |
111 | if (errno != EAGAIN && errno != EBUSY) | |
112 | { | |
113 | fprintf(stderr, "ERROR: Unable to open SCSI device \"%s\" - %s\n", | |
114 | resource, strerror(errno)); | |
115 | return (1); | |
116 | } | |
117 | else | |
118 | { | |
119 | fprintf(stderr, "INFO: SCSI device \"%s\" busy; retrying...\n", | |
120 | resource); | |
121 | sleep(30); | |
122 | } | |
123 | } | |
124 | } | |
125 | while (scsi_fd == -1); | |
126 | ||
127 | /* | |
128 | * Now that we are "connected" to the port, ignore SIGTERM so that we | |
129 | * can finish out any page data the driver sends (e.g. to eject the | |
130 | * current page... Only ignore SIGTERM if we are printing data from | |
131 | * stdin (otherwise you can't cancel raw jobs...) | |
132 | */ | |
133 | ||
134 | if (fd != 0) | |
135 | { | |
136 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
137 | sigset(SIGTERM, SIG_IGN); | |
138 | #elif defined(HAVE_SIGACTION) | |
139 | memset(&action, 0, sizeof(action)); | |
140 | ||
141 | sigemptyset(&action.sa_mask); | |
142 | action.sa_handler = SIG_IGN; | |
143 | sigaction(SIGTERM, &action, NULL); | |
144 | #else | |
145 | signal(SIGTERM, SIG_IGN); | |
146 | #endif /* HAVE_SIGSET */ | |
147 | } | |
148 | ||
149 | /* | |
150 | * Copy the print file to the device... | |
151 | */ | |
152 | ||
153 | while (copies > 0) | |
154 | { | |
155 | if (fd != 0) | |
156 | lseek(fd, 0, SEEK_SET); | |
157 | ||
158 | while ((bytes = read(fd, buffer, sizeof(buffer))) > 0) | |
159 | { | |
160 | memset(&scsi_req, 0, sizeof(scsi_req)); | |
161 | ||
162 | scsi_req.ds_flags = DSRQ_WRITE; | |
163 | scsi_req.ds_time = 60 * 1000; | |
164 | scsi_req.ds_cmdbuf = scsi_cmd; | |
165 | scsi_req.ds_cmdlen = 6; | |
166 | scsi_req.ds_databuf = buffer; | |
167 | scsi_req.ds_datalen = bytes; | |
168 | ||
169 | scsi_cmd[0] = 0x0a; /* Group 0 print command */ | |
170 | scsi_cmd[1] = 0x00; | |
171 | scsi_cmd[2] = bytes / 65536; | |
172 | scsi_cmd[3] = bytes / 256; | |
173 | scsi_cmd[4] = bytes; | |
174 | scsi_cmd[5] = 0x00; | |
175 | ||
176 | for (try = 0; try < 10; try ++) | |
177 | if (ioctl(scsi_fd, DS_ENTER, &scsi_req) < 0 || | |
178 | scsi_req.ds_status != 0) | |
179 | { | |
180 | fprintf(stderr, "WARNING: SCSI command timed out (%d); retrying...\n", | |
181 | scsi_req.ds_status); | |
182 | sleep(try + 1); | |
183 | } | |
184 | else | |
185 | break; | |
186 | ||
187 | if (try >= 10) | |
188 | { | |
189 | fprintf(stderr, "ERROR: Unable to send print data (%d)\n", | |
190 | scsi_req.ds_status); | |
191 | close(scsi_fd); | |
192 | return (1); | |
193 | } | |
194 | } | |
195 | ||
196 | copies --; | |
197 | } | |
198 | ||
199 | /* | |
200 | * Close the device and return... | |
201 | */ | |
202 | ||
203 | close(fd); | |
204 | ||
205 | return (0); | |
206 | } | |
207 | ||
208 | ||
209 | /* | |
997fbfa7 | 210 | * End of "$Id: scsi-irix.c,v 1.2 2002/12/17 18:56:33 swdev Exp $". |
62810009 | 211 | */ |