tests/test-cc-cpp.cpp

   1 /* nbdkit
   2  * Copyright Red Hat
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  * * 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  * * Neither the name of Red Hat nor the names of its contributors may be
  16  * used to endorse or promote products derived from this software without
  17  * specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  22  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
  23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  26  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  27  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  28  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  29  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #ifndef __cplusplus
  34 #error "this test should be compiled with a C++ compiler"
  35 #endif
  36
  37 #include <cstdio>
  38 #include <cstring>
  39
  40 #define NBDKIT_API_VERSION 2
  41 #include <nbdkit-plugin.h>
  42
  43 /* This looks like a 100MB disk with one empty partition. */
  44 static unsigned char bootsector[512] = {
  45   0xfa, 0xb8, 0x00, 0x10, 0x8e, 0xd0, 0xbc, 0x00,
  46   0xb0, 0xb8, 0x00, 0x00, 0x8e, 0xd8, 0x8e, 0xc0,
  47   0xfb, 0xbe, 0x00, 0x7c, 0xbf, 0x00, 0x06, 0xb9,
  48   0x00, 0x02, 0xf3, 0xa4, 0xea, 0x21, 0x06, 0x00,
  49   0x00, 0xbe, 0xbe, 0x07, 0x38, 0x04, 0x75, 0x0b,
  50   0x83, 0xc6, 0x10, 0x81, 0xfe, 0xfe, 0x07, 0x75,
  51   0xf3, 0xeb, 0x16, 0xb4, 0x02, 0xb0, 0x01, 0xbb,
  52   0x00, 0x7c, 0xb2, 0x80, 0x8a, 0x74, 0x01, 0x8b,
  53   0x4c, 0x02, 0xcd, 0x13, 0xea, 0x00, 0x7c, 0x00,
  54   0x00, 0xeb, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00,
  55   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  56   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  57   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  58   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  59   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  60   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  61   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  62   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  63   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  64   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  65   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  66   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  67   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  68   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  69   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  70   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  71   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  72   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  73   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  74   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  75   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  76   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  77   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  78   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  79   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  80   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  81   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  82   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  83   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  84   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  85   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  86   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  87   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  88   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  89   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  90   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  91   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  92   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  93   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  94   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  95   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  96   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  97   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  98   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  99   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 100   0xe1, 0x5b, 0x02, 0x00, 0x00, 0x00, 0x00, 0x02,
 101   0x03, 0x00, 0x83, 0xbc, 0x31, 0x0c, 0x80, 0x00,
 102   0x00, 0x00, 0x01, 0x1f, 0x03, 0x00, 0x00, 0x00,
 103   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 104   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 105   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 106   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 107   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 108   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xaa
 109 };
 110 static unsigned char data[104857600];
 111
 112 static void
 113 cc_cpp_load (void)
 114 {
 115   memcpy (data, bootsector, sizeof bootsector);
 116 }
 117
 118 static void *
 119 cc_cpp_open (int readonly)
 120 {
 121   return NBDKIT_HANDLE_NOT_NEEDED;
 122 }
 123
 124 static int64_t
 125 cc_cpp_get_size (void *handle)
 126 {
 127   return (int64_t) sizeof (data);
 128 }
 129
 130 #define THREAD_MODEL NBDKIT_THREAD_MODEL_SERIALIZE_ALL_REQUESTS
 131
 132 static int
 133 cc_cpp_pread (void *handle, void *buf, uint32_t count, uint64_t offset,
 134               uint32_t flags)
 135 {
 136   memcpy (buf, data+offset, count);
 137   return 0;
 138 }
 139
 140 /* https://bugzilla.redhat.com/show_bug.cgi?id=1418328#c9 */
 141 namespace {
 142   nbdkit_plugin create_plugin() {
 143     nbdkit_plugin plugin = nbdkit_plugin ();
 144     plugin.name = "cc-cpp";
 145     plugin.version = "1.0";
 146     plugin.load = cc_cpp_load;
 147     plugin.open = cc_cpp_open;
 148     plugin.get_size = cc_cpp_get_size;
 149     plugin.pread = cc_cpp_pread;
 150     return plugin;
 151   }
 152 }
 153 static struct nbdkit_plugin plugin = create_plugin ();
 154
 155 NBDKIT_REGISTER_PLUGIN(plugin)