Remove unused support for SysV shared memory

src/trusted/service_runtime/mmap_unittest.cc

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 
 #if NACL_LINUX
 # include <sys/mman.h>
 #elif NACL_OSX
 # include <mach/mach.h>
 #endif
 
 #include "gtest/gtest.h"
 
 #include "native_client/src/include/portability_io.h"
-#include "native_client/src/trusted/desc/linux/nacl_desc_sysv_shm.h"
 #include "native_client/src/trusted/desc/nacl_desc_imc_shm.h"
 #include "native_client/src/trusted/desc/nacl_desc_io.h"
 #include "native_client/src/trusted/desc/nrd_all_modules.h"
 #include "native_client/src/trusted/service_runtime/include/bits/mman.h"
 #include "native_client/src/trusted/service_runtime/include/sys/fcntl.h"
 #include "native_client/src/trusted/service_runtime/mmap_test_check.h"
 #include "native_client/src/trusted/service_runtime/nacl_app_thread.h"
 #include "native_client/src/trusted/service_runtime/sel_addrspace.h"
 #include "native_client/src/trusted/service_runtime/sel_ldr.h"
 #include "native_client/src/trusted/service_runtime/sys_memory.h"
@@ skipping 361 matching lines @@
   CheckMapping(sysaddr, size, PROT_NONE, MAP_PRIVATE);
 #elif NACL_OSX
   CheckMapping(sysaddr, size, VM_PROT_NONE, SM_EMPTY);
 #else
 # error Unsupported platform
 #endif
 
   NaClAddrSpaceFree(&app);
 }
 
-// NaCl uses SysV shared memory only on Linux, because X Windows
-// depends on it.
-#if NACL_LINUX
-TEST_F(MmapTest, TestSysvShmMapping) {
-  struct NaClApp app;
-  ASSERT_EQ(NaClAppCtor(&app), 1);
-  ASSERT_EQ(NaClAllocAddrSpace(&app), LOAD_OK);
-
-  size_t shm_size = 0x12000;
-  size_t rounded_size = NaClRoundAllocPage(shm_size);
-  ASSERT_EQ(rounded_size, (size_t) 0x20000);
-
-  struct NaClDescSysvShm *shm_desc =
-      (struct NaClDescSysvShm *) malloc(sizeof(*shm_desc));
-  ASSERT_TRUE(NaClDescSysvShmCtor(shm_desc, shm_size));
-  struct NaClDesc *desc = &shm_desc->base;
-  int fd = NaClAppSetDescAvail(&app, desc);
-
-  uintptr_t mapping_addr = 0x200000;
-
-  // First, map something with PROT_READ, so that we can later check
-  // that this is correctly overwritten by PROT_READ|PROT_WRITE and
-  // PROT_NONE mappings.
-  uintptr_t result_addr = (uint32_t) NaClSysMmapIntern(
-      &app, (void *) mapping_addr, shm_size,
-      NACL_ABI_PROT_READ,
-      NACL_ABI_MAP_FIXED | NACL_ABI_MAP_PRIVATE | NACL_ABI_MAP_ANONYMOUS,
-      -1, 0);
-  ASSERT_EQ(result_addr, mapping_addr);
-
-  result_addr = (uint32_t) NaClSysMmapIntern(
-      &app, (void *) mapping_addr, shm_size,
-      NACL_ABI_PROT_READ | NACL_ABI_PROT_WRITE,
-      NACL_ABI_MAP_FIXED | NACL_ABI_MAP_SHARED, fd, 0);
-  ASSERT_EQ(result_addr, mapping_addr);
-  uintptr_t sysaddr = NaClUserToSys(&app, mapping_addr);
-  // We should see two mappings.  The first is the SysV shared memory
-  // segment.  The second is padding upto the 64k page size.
-  CheckMapping(sysaddr, shm_size, PROT_READ | PROT_WRITE, MAP_SHARED);
-  CheckMapping(sysaddr + shm_size, rounded_size - shm_size,
-               PROT_NONE, MAP_PRIVATE);
-
-  NaClDescUnref(desc);
-  NaClAddrSpaceFree(&app);
-}
-#endif
-
 #endif /* NACL_ARCH(NACL_BUILD_ARCH) != NACL_arm */