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89008a65 | 1 | /* |
c9d3f842 | 2 | * "$Id$" |
89008a65 | 3 | * |
4 | * IRIX SCSI printer support for the Common UNIX Printing System (CUPS). | |
5 | * | |
4e8d321f | 6 | * Copyright 2007 by Apple Inc. |
c9d3f842 | 7 | * Copyright 2003-2005 by Easy Software Products, all rights reserved. |
89008a65 | 8 | * |
9 | * Redistribution and use in source and binary forms, with or | |
10 | * without modification, are permitted provided that the | |
11 | * following conditions are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above | |
14 | * copyright notice, this list of conditions and the | |
15 | * following disclaimer. | |
16 | * | |
17 | * 2. Redistributions in binary form must reproduce the | |
18 | * above copyright notice, this list of conditions and | |
19 | * the following disclaimer in the documentation and/or | |
20 | * other materials provided with the distribution. | |
21 | * | |
22 | * 3. All advertising materials mentioning features or use | |
23 | * of this software must display the following | |
24 | * acknowledgement: | |
25 | * | |
26 | * This product includes software developed by Easy | |
27 | * Software Products. | |
28 | * | |
29 | * 4. The name of Easy Software Products may not be used to | |
30 | * endorse or promote products derived from this software | |
31 | * without specific prior written permission. | |
32 | * | |
33 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS | |
34 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, | |
35 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
36 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
37 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS | |
38 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
39 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
40 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
41 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
42 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
43 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
44 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
45 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
46 | * DAMAGE. | |
47 | * | |
48 | * Contents: | |
49 | * | |
50 | * list_devices() - List the available SCSI printer devices. | |
51 | * print_device() - Print a file to a SCSI device. | |
52 | */ | |
53 | ||
54 | /* | |
55 | * Include necessary headers. | |
56 | */ | |
57 | ||
58 | #include <bstring.h> /* memcpy() and friends */ | |
59 | #include <sys/dsreq.h> /* SCSI interface stuff */ | |
60 | ||
61 | ||
62 | /* | |
63 | * 'list_devices()' - List the available SCSI printer devices. | |
64 | */ | |
65 | ||
66 | void | |
67 | list_devices(void) | |
68 | { | |
69 | puts("direct scsi \"Unknown\" \"SCSI Printer\""); | |
70 | } | |
71 | ||
72 | ||
73 | /* | |
74 | * 'print_device()' - Print a file to a SCSI device. | |
75 | */ | |
76 | ||
77 | int /* O - Print status */ | |
78 | print_device(const char *resource, /* I - SCSI device */ | |
79 | int fd, /* I - File to print */ | |
80 | int copies) /* I - Number of copies to print */ | |
81 | { | |
82 | int scsi_fd; /* SCSI file descriptor */ | |
83 | char buffer[8192]; /* Data buffer */ | |
84 | int bytes; /* Number of bytes */ | |
85 | int try; /* Current try */ | |
86 | dsreq_t scsi_req; /* SCSI request */ | |
7414cf08 | 87 | char scsi_cmd[6]; /* SCSI command data */ |
89008a65 | 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 | { | |
ff0295f0 | 99 | fprintf(stderr, _("ERROR: Bad SCSI device file \"%s\"!\n"), resource); |
6248387b | 100 | return (CUPS_BACKEND_STOP); |
89008a65 | 101 | } |
102 | ||
103 | /* | |
104 | * Open the SCSI device file... | |
105 | */ | |
106 | ||
22a980cc | 107 | fputs("STATE: +connecting-to-device\n", stderr); |
108 | ||
89008a65 | 109 | do |
110 | { | |
111 | if ((scsi_fd = open(resource, O_RDWR | O_EXCL)) == -1) | |
112 | { | |
b7b63780 | 113 | if (getenv("CLASS") != NULL) |
114 | { | |
115 | /* | |
116 | * If the CLASS environment variable is set, the job was submitted | |
117 | * to a class and not to a specific queue. In this case, we want | |
118 | * to abort immediately so that the job can be requeued on the next | |
119 | * available printer in the class. | |
120 | */ | |
121 | ||
ff0295f0 | 122 | fputs(_("INFO: Unable to contact printer, queuing on next " |
123 | "printer in class...\n"), stderr); | |
b7b63780 | 124 | |
125 | /* | |
126 | * Sleep 5 seconds to keep the job from requeuing too rapidly... | |
127 | */ | |
128 | ||
129 | sleep(5); | |
130 | ||
131 | return (1); | |
132 | } | |
133 | ||
89008a65 | 134 | if (errno != EAGAIN && errno != EBUSY) |
135 | { | |
ff0295f0 | 136 | fprintf(stderr, _("ERROR: Unable to open device file \"%s\": %s\n"), |
3611e7ed | 137 | resource, strerror(errno)); |
6248387b | 138 | return (CUPS_BACKEND_FAILED); |
89008a65 | 139 | } |
140 | else | |
141 | { | |
ff0295f0 | 142 | fputs(_("INFO: Printer busy; will retry in 30 seconds...\n"), stderr); |
89008a65 | 143 | sleep(30); |
144 | } | |
145 | } | |
146 | } | |
147 | while (scsi_fd == -1); | |
148 | ||
22a980cc | 149 | fputs("STATE: -connecting-to-device\n", stderr); |
150 | ||
89008a65 | 151 | /* |
152 | * Now that we are "connected" to the port, ignore SIGTERM so that we | |
153 | * can finish out any page data the driver sends (e.g. to eject the | |
154 | * current page... Only ignore SIGTERM if we are printing data from | |
155 | * stdin (otherwise you can't cancel raw jobs...) | |
156 | */ | |
157 | ||
158 | if (fd != 0) | |
159 | { | |
160 | #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ | |
161 | sigset(SIGTERM, SIG_IGN); | |
162 | #elif defined(HAVE_SIGACTION) | |
163 | memset(&action, 0, sizeof(action)); | |
164 | ||
165 | sigemptyset(&action.sa_mask); | |
166 | action.sa_handler = SIG_IGN; | |
167 | sigaction(SIGTERM, &action, NULL); | |
168 | #else | |
169 | signal(SIGTERM, SIG_IGN); | |
170 | #endif /* HAVE_SIGSET */ | |
171 | } | |
172 | ||
173 | /* | |
174 | * Copy the print file to the device... | |
175 | */ | |
176 | ||
177 | while (copies > 0) | |
178 | { | |
179 | if (fd != 0) | |
180 | lseek(fd, 0, SEEK_SET); | |
181 | ||
182 | while ((bytes = read(fd, buffer, sizeof(buffer))) > 0) | |
183 | { | |
184 | memset(&scsi_req, 0, sizeof(scsi_req)); | |
185 | ||
186 | scsi_req.ds_flags = DSRQ_WRITE; | |
187 | scsi_req.ds_time = 60 * 1000; | |
188 | scsi_req.ds_cmdbuf = scsi_cmd; | |
189 | scsi_req.ds_cmdlen = 6; | |
190 | scsi_req.ds_databuf = buffer; | |
191 | scsi_req.ds_datalen = bytes; | |
192 | ||
193 | scsi_cmd[0] = 0x0a; /* Group 0 print command */ | |
194 | scsi_cmd[1] = 0x00; | |
195 | scsi_cmd[2] = bytes / 65536; | |
196 | scsi_cmd[3] = bytes / 256; | |
197 | scsi_cmd[4] = bytes; | |
198 | scsi_cmd[5] = 0x00; | |
199 | ||
200 | for (try = 0; try < 10; try ++) | |
201 | if (ioctl(scsi_fd, DS_ENTER, &scsi_req) < 0 || | |
202 | scsi_req.ds_status != 0) | |
203 | { | |
ff0295f0 | 204 | fprintf(stderr, |
205 | _("WARNING: SCSI command timed out (%d); retrying...\n"), | |
206 | scsi_req.ds_status); | |
89008a65 | 207 | sleep(try + 1); |
208 | } | |
209 | else | |
210 | break; | |
211 | ||
212 | if (try >= 10) | |
213 | { | |
ff0295f0 | 214 | fprintf(stderr, _("ERROR: Unable to send print data (%d)\n"), |
215 | scsi_req.ds_status); | |
89008a65 | 216 | close(scsi_fd); |
6248387b | 217 | return (CUPS_BACKEND_FAILED); |
89008a65 | 218 | } |
219 | } | |
220 | ||
221 | copies --; | |
222 | } | |
223 | ||
224 | /* | |
225 | * Close the device and return... | |
226 | */ | |
227 | ||
228 | close(fd); | |
229 | ||
6248387b | 230 | return (CUPS_BACKEND_OK); |
89008a65 | 231 | } |
232 | ||
233 | ||
234 | /* | |
c9d3f842 | 235 | * End of "$Id$". |
89008a65 | 236 | */ |