/* * "$Id$" * * IRIX SCSI printer support for the Common UNIX Printing System (CUPS). * * Copyright 2003 by Easy Software Products, all rights reserved. * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the * following conditions are met: * * 1. Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * 2. Redistributions in binary form must reproduce the * above copyright notice, this list of conditions and * the following disclaimer in the documentation and/or * other materials provided with the distribution. * * 3. All advertising materials mentioning features or use * of this software must display the following * acknowledgement: * * This product includes software developed by Easy * Software Products. * * 4. The name of Easy Software Products may not be used to * endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * Contents: * * list_devices() - List the available SCSI printer devices. * print_device() - Print a file to a SCSI device. */ /* * Include necessary headers. */ #include <bstring.h> /* memcpy() and friends */ #include <sys/dsreq.h> /* SCSI interface stuff */ /* * 'list_devices()' - List the available SCSI printer devices. */ void list_devices(void) { puts("direct scsi \"Unknown\" \"SCSI Printer\""); } /* * 'print_device()' - Print a file to a SCSI device. */ int /* O - Print status */ print_device(const char *resource, /* I - SCSI device */ int fd, /* I - File to print */ int copies) /* I - Number of copies to print */ { int scsi_fd; /* SCSI file descriptor */ char buffer[8192]; /* Data buffer */ int bytes; /* Number of bytes */ int try; /* Current try */ dsreq_t scsi_req; /* SCSI request */ char scsi_cmd[6]; /* SCSI command data */ #if defined(HAVE_SIGACTION) && !defined(HAVE_SIGSET) struct sigaction action; /* Actions for POSIX signals */ #endif /* HAVE_SIGACTION && !HAVE_SIGSET */ /* * Make sure we have a valid resource name... */ if (strncmp(resource, "/dev/scsi/", 10) != 0) { fprintf(stderr, "ERROR: Bad SCSI device file \"%s\"!\n", resource); return (1); } /* * Open the SCSI device file... */ do { if ((scsi_fd = open(resource, O_RDWR | O_EXCL)) == -1) { if (errno != EAGAIN && errno != EBUSY) { fprintf(stderr, "ERROR: Unable to open SCSI device \"%s\" - %s\n", resource, strerror(errno)); return (1); } else { fprintf(stderr, "INFO: SCSI device \"%s\" busy; retrying...\n", resource); sleep(30); } } } while (scsi_fd == -1); /* * Now that we are "connected" to the port, ignore SIGTERM so that we * can finish out any page data the driver sends (e.g. to eject the * current page... Only ignore SIGTERM if we are printing data from * stdin (otherwise you can't cancel raw jobs...) */ if (fd != 0) { #ifdef HAVE_SIGSET /* Use System V signals over POSIX to avoid bugs */ sigset(SIGTERM, SIG_IGN); #elif defined(HAVE_SIGACTION) memset(&action, 0, sizeof(action)); sigemptyset(&action.sa_mask); action.sa_handler = SIG_IGN; sigaction(SIGTERM, &action, NULL); #else signal(SIGTERM, SIG_IGN); #endif /* HAVE_SIGSET */ } /* * Copy the print file to the device... */ while (copies > 0) { if (fd != 0) lseek(fd, 0, SEEK_SET); while ((bytes = read(fd, buffer, sizeof(buffer))) > 0) { memset(&scsi_req, 0, sizeof(scsi_req)); scsi_req.ds_flags = DSRQ_WRITE; scsi_req.ds_time = 60 * 1000; scsi_req.ds_cmdbuf = scsi_cmd; scsi_req.ds_cmdlen = 6; scsi_req.ds_databuf = buffer; scsi_req.ds_datalen = bytes; scsi_cmd[0] = 0x0a; /* Group 0 print command */ scsi_cmd[1] = 0x00; scsi_cmd[2] = bytes / 65536; scsi_cmd[3] = bytes / 256; scsi_cmd[4] = bytes; scsi_cmd[5] = 0x00; for (try = 0; try < 10; try ++) if (ioctl(scsi_fd, DS_ENTER, &scsi_req) < 0 || scsi_req.ds_status != 0) { fprintf(stderr, "WARNING: SCSI command timed out (%d); retrying...\n", scsi_req.ds_status); sleep(try + 1); } else break; if (try >= 10) { fprintf(stderr, "ERROR: Unable to send print data (%d)\n", scsi_req.ds_status); close(scsi_fd); return (1); } } copies --; } /* * Close the device and return... */ close(fd); return (0); } /* * End of "$Id$". */