OSX/utilities/Regressions/su-08-secbuffer.c

   1 /*
   2  * Copyright (c) 2014 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24
  25 #include <utilities/SecBuffer.h>
  26
  27 #include "utilities_regressions.h"
  28
  29
  30 #define kTestCount (2 * 12 + 3 * 12)
  31
  32 const uint8_t testBytes[] = { 0xD0, 0xD0, 0xBA, 0xAD };
  33
  34 static void
  35 tests(void) {
  36     for(size_t testSize = 1023; testSize < 2 * 1024 * 1024; testSize *= 2) {
  37         PerformWithBuffer(testSize, ^(size_t size, uint8_t *buffer) {
  38             ok(buffer, "got buffer");
  39             ok(size == testSize, "buffer size");
  40
  41             // Scribble on the end, make sure we can.
  42             uint64_t *scribbleLocation = (uint64_t *) (buffer + testSize - sizeof(testBytes));
  43             bcopy(testBytes, scribbleLocation, sizeof(testBytes));
  44         });
  45     }
  46
  47     for(size_t testSize = 1023; testSize < 2 * 1024 * 1024; testSize *= 2) {
  48         __block uint64_t *scribbleLocation = NULL;
  49         PerformWithBufferAndClear(testSize, ^(size_t size, uint8_t *buffer) {
  50             ok(buffer, "got buffer");
  51             ok(size == testSize, "buffer size");
  52
  53             scribbleLocation = (uint64_t *) (buffer + testSize - sizeof(testBytes));
  54             bcopy(testBytes, scribbleLocation, sizeof(testBytes));
  55         });
  56         SKIP: {
  57             skip("memory might be unmapped leading to a crash", 1, false);
  58             ok(*scribbleLocation == 0, "Was erased");
  59         }
  60     }
  61 }
  62
  63
  64 int
  65 su_08_secbuffer(int argc, char *const *argv) {
  66     plan_tests(kTestCount);
  67
  68     tests();
  69
  70     return 0;
  71 }