share/examples/rump/ulptprint/ulptprint.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (c) 2009 Antti Kantee.  All Rights Reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/types.h>
  29 #include <sys/dirent.h>
  30 #include <sys/mount.h>
  31
  32 #include <rump/rump.h>
  33 #include <rump/rump_syscalls.h>
  34
  35 #include <err.h>
  36 #include <errno.h>
  37 #include <fcntl.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42
  43 /*
  44  * Proof-of-concept program:
  45  *
  46  * Prints given (postscript) file by "catting" into the printer.
  47  */
  48
  49 int
  50 main(int argc, char *argv[])
  51 {
  52         char buf[8192];
  53         ssize_t n;
  54         int probeonly = 0;
  55         int fd_src, fd_dst;
  56
  57         if (argc != 2)
  58                 errx(1, "need 2 args");
  59
  60         if (strcmp(argv[1], "probe") == 0)
  61                 probeonly = 1;
  62
  63         if (probeonly)
  64                 rump_boot_sethowto(RUMP_AB_VERBOSE);
  65         rump_init();
  66         if (probeonly)
  67                 exit(0);
  68
  69         fd_dst = rump_sys_open("/dev/ulpt0", O_RDWR);
  70         if (fd_dst == -1)
  71                 err(1, "printer open");
  72
  73         fd_src = open(argv[1], O_RDONLY);
  74         if (fd_src == -1)
  75                 err(1, "open source");
  76
  77         for (;;) {
  78                 n = read(fd_src, buf, sizeof(buf));
  79                 if (n == 0)
  80                         break;
  81                 if (n == -1)
  82                         err(1, "read");
  83
  84                 if (rump_sys_write(fd_dst, buf, n) != n)
  85                         err(1, "write to printer");
  86         }
  87         rump_sys_close(fd_dst);
  88
  89         printf("done\n");
  90 }