src/sys/iopen.c

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #include <afsconfig.h>
  11 #include <afs/param.h>
  12
  13 #include <roken.h>
  14
  15 #ifdef AFS_HPUX_ENV
  16 #include <sys/mknod.h>
  17 #endif
  18
  19 #include "afssyscalls.h"
  20
  21 #include "AFS_component_version_number.c"
  22
  23 void
  24 Usage(void)
  25 {
  26     printf("Usage: iopen <partition> <inode>\n");
  27     printf
  28         ("iopen opens file by inode, then tries to read it, printing it to stdout.\n");
  29     exit(1);
  30 }
  31
  32 main(argc, argv)
  33      char **argv;
  34 {
  35     char *part;
  36     char buf[5];
  37     int fd, n;
  38     struct stat status;
  39     Inode ino;
  40
  41     if (argc != 3)
  42         Usage();
  43
  44     part = argv[1];
  45 #ifdef AFS_64BIT_IOPS_ENV
  46     ino = strtoull(argv[2], NULL, 10);
  47 #else
  48     ino = atoi(argv[2]);
  49 #endif
  50
  51     if (stat(part, &status) == -1) {
  52         perror("stat");
  53         exit(1);
  54     }
  55     printf("ino=%" AFS_INT64_FMT "\n", ino);
  56     printf("About to iopen(dev=(%d,%d), inode=%s, mode=%d\n",
  57            major(status.st_dev), minor(status.st_dev), PrintInode(NULL, ino),
  58            O_RDONLY);
  59     fflush(stdout);
  60     fd = IOPEN(status.st_dev, ino, O_RDONLY);
  61     if (fd == -1) {
  62         perror("iopen");
  63         exit(1);
  64     }
  65     printf("iopen successful, fd=%d\n", fd);
  66     while ((n = read(fd, buf, 5)) > 0)
  67         write(1, buf, n);
  68     if (n < 0)
  69         perror("read");
  70     exit(0);
  71 }