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HDFS-15977. Call explicit_bzero only if it is available. (#2914) 

Reviewed-by: Masatake Iwasaki <iwasakims@apache.org>
Reviewed-by: Inigo Goiri <inigoiri@apache.org>
(cherry picked from commit f0241ec216)

 Conflicts:
	hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/x-platform/syscall_linux.cc
This commit is contained in:
Akira Ajisaka 2021-04-16 13:26:45 +09:00
parent ff26a7700d
commit f1c0dc84cd
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GPG Key ID: C1EDBB9CA400FD50
4 changed files with 18 additions and 0 deletions
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6
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/CMakeLists.txt
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@ -48,6 +48,7 @@ find_package(GSasl)
find_package(Threads)
include(CheckCXXSourceCompiles)
include(CheckSymbolExists)
# Check if thread_local is supported
unset (THREAD_LOCAL_SUPPORTED CACHE)
@ -141,6 +142,11 @@ else (NOT NO_SASL)
message(STATUS "Compiling with NO SASL SUPPORT")
endif (NOT NO_SASL)
check_symbol_exists(explicit_bzero "string.h" HAVE_EXPLICIT_BZERO)
if(HAVE_EXPLICIT_BZERO)
add_definitions(-DHAVE_EXPLICIT_BZERO)
endif()
add_definitions(-DASIO_STANDALONE -DASIO_CPP11_DATE_TIME)
# Disable optimizations if compiling debug

4
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/bindings/c/hdfs.cc
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@ -1402,7 +1402,11 @@ int hdfsGetBlockLocations(hdfsFS fs, const char *path, struct hdfsBlockLocations
hdfsBlockLocations *locations = new struct hdfsBlockLocations();
(*locations_out) = locations;
#ifdef HAVE_EXPLICIT_BZERO
explicit_bzero(locations, sizeof(*locations));
#else
bzero(locations, sizeof(*locations));
#endif
locations->fileLength = ppLocations->getFileLength();
locations->isLastBlockComplete = ppLocations->isLastBlockComplete();
locations->isUnderConstruction = ppLocations->isUnderConstruction();

4
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/hdfs_ext_test.cc
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@ -475,7 +475,11 @@ TEST_F(HdfsExtTest, TestReadStats) {
hdfsFile file = hdfsOpenFile(fs, path.c_str(), O_WRONLY, 0, 0, 0);
EXPECT_NE(nullptr, file);
void * buf = malloc(size);
#ifdef HAVE_EXPLICIT_BZERO
explicit_bzero(buf, size);
#else
bzero(buf, size);
#endif
EXPECT_EQ(size, hdfsWrite(fs, file, buf, size));
free(buf);
EXPECT_EQ(0, hdfsCloseFile(fs, file));

4
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tests/hdfspp_mini_dfs.h
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@ -92,7 +92,11 @@ public:
hdfsFile file = hdfsOpenFile(*this, path.c_str(), O_WRONLY, 0, 0, 0);
EXPECT_NE(nullptr, file);
void * buf = malloc(size);
#ifdef HAVE_EXPLICIT_BZERO
explicit_bzero(buf, size);
#else
bzero(buf, size);
#endif
EXPECT_EQ(1024, hdfsWrite(*this, file, buf, size));
EXPECT_EQ(0, hdfsCloseFile(*this, file));
free(buf);