trts_emodpr.cpp 2.7 KB

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  1. /*
  2. * Copyright (C) 2011-2018 Intel Corporation. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. *
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in
  12. * the documentation and/or other materials provided with the
  13. * distribution.
  14. * * Neither the name of Intel Corporation nor the names of its
  15. * contributors may be used to endorse or promote products derived
  16. * from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. *
  30. */
  31. #include "trts_emodpr.h"
  32. #include "sgx_trts.h" // for sgx_ocalloc, sgx_is_outside_enclave
  33. #include "arch.h"
  34. #include "sgx_edger8r.h" // for sgx_ocall etc.
  35. #include "internal/rts.h"
  36. /* sgx_ocfree() just restores the original outside stack pointer. */
  37. #define OCALLOC(val, type, len) do { \
  38. void* __tmp = sgx_ocalloc(len); \
  39. if (__tmp == NULL) { \
  40. sgx_ocfree(); \
  41. return SGX_ERROR_UNEXPECTED;\
  42. } \
  43. (val) = (type)__tmp; \
  44. } while (0)
  45. typedef struct ms_change_permissions_ocall_t {
  46. size_t ms_addr;
  47. size_t ms_size;
  48. uint64_t ms_epcm_perms;
  49. } ms_change_permissions_ocall_t;
  50. sgx_status_t SGXAPI change_permissions_ocall(size_t addr, size_t size, uint64_t epcm_perms)
  51. {
  52. #ifdef SE_SIM
  53. (void)addr;
  54. (void)size;
  55. (void)epcm_perms;
  56. return SGX_SUCCESS;
  57. #else
  58. sgx_status_t status = SGX_SUCCESS;
  59. ms_change_permissions_ocall_t* ms;
  60. OCALLOC(ms, ms_change_permissions_ocall_t*, sizeof(*ms));
  61. ms->ms_addr = addr;
  62. ms->ms_size = size;
  63. ms->ms_epcm_perms = epcm_perms;
  64. status = sgx_ocall(EDMM_MODPR, ms);
  65. sgx_ocfree();
  66. return status;
  67. #endif
  68. }