feature: Add FsAccess and Derived class in Sysman Kmd Interface

- The FsAccess, ProcFsAccess and SysfsAccess classes have been added in
a file in the Sysman Shared directory. The instances of these classes
are maintained in the Sysman Kmd Interface classes.
- Added functions for opendir, readdir and closedir in the shared code.
- Added a ULT in the sysman directory to cover these new functions from
the shared code.

Related-To: LOCI-4689

Signed-off-by: Bari, Pratik <pratik.bari@intel.com>

shared/test/common/os_interface/linux/sys_calls_linux_ult.cpp

@@ -58,6 +58,9 @@ int mkstempCalled = 0;
 int renameCalled = 0;
 int pathFileExistsCalled = 0;
 int flockCalled = 0;
+int opendirCalled = 0;
+int readdirCalled = 0;
+int closedirCalled = 0;
 
 std::vector<void *> mmapVector(64);
 std::vector<void *> mmapCapturedExtendedPointers(64);
@@ -92,6 +95,9 @@ int (*sysCallsStat)(const std::string &filePath, struct stat *statbuf) = nullptr
 int (*sysCallsMkstemp)(char *fileName) = nullptr;
 int (*sysCallsMkdir)(const std::string &dir) = nullptr;
 bool (*sysCallsPathExists)(const std::string &path) = nullptr;
+DIR *(*sysCallsOpendir)(const char *name) = nullptr;
+struct dirent *(*sysCallsReaddir)(DIR *dir) = nullptr;
+int (*sysCallsClosedir)(DIR *dir) = nullptr;
 
 int mkdir(const std::string &path) {
     if (sysCallsMkdir != nullptr) {
@@ -413,5 +419,32 @@ int stat(const std::string &filePath, struct stat *statbuf) {
     return 0;
 }
 
+DIR *opendir(const char *name) {
+    opendirCalled++;
+    if (sysCallsOpendir != nullptr) {
+        return sysCallsOpendir(name);
+    }
+
+    return nullptr;
+}
+
+struct dirent *readdir(DIR *dir) {
+    readdirCalled++;
+    if (sysCallsReaddir != nullptr) {
+        return sysCallsReaddir(dir);
+    }
+
+    return nullptr;
+}
+
+int closedir(DIR *dir) {
+    closedirCalled++;
+    if (sysCallsClosedir != nullptr) {
+        return sysCallsClosedir(dir);
+    }
+
+    return 0;
+}
+
 } // namespace SysCalls
 } // namespace NEO

shared/test/common/os_interface/linux/sys_calls_linux_ult.h

@@ -41,6 +41,9 @@ extern int (*sysCallsUnlink)(const std::string &pathname);
 extern int (*sysCallsStat)(const std::string &filePath, struct stat *statbuf);
 extern int (*sysCallsMkstemp)(char *fileName);
 extern bool (*sysCallsPathExists)(const std::string &path);
+extern DIR *(*sysCallsOpendir)(const char *name);
+extern struct dirent *(*sysCallsReaddir)(DIR *dir);
+extern int (*sysCallsClosedir)(DIR *dir);
 
 extern int flockRetVal;
 extern int closeFuncRetVal;