Make sure cFile_i is constructed & destructed cleanly; clean up GetSymLinkStr a bit more; improve Debug/Basic & UnixFSServices/GetExecutableFilename unit tests

src/core/file_unix.cpp

@@ -83,13 +83,14 @@ struct cFile_i
 
 //Ctor
 cFile_i::cFile_i() :
-    mpCurrStream(NULL)
+    m_fd(-1), mpCurrStream(NULL), mFlags(0)
 {}
 
 //Dtor
 cFile_i::~cFile_i()
 {
     if (mpCurrStream != NULL)
+    {
         fclose( mpCurrStream );
         mpCurrStream = NULL;
 
@@ -103,8 +104,7 @@ cFile_i::~cFile_i()
             }
         }
 #endif
-
+    }
-    mFileName.empty();
 }
 
 ///////////////////////////////////////////////////////////////////////////

src/fs/fspropcalc.cpp

@@ -90,7 +90,7 @@ bool cFSPropCalc::GetSymLinkStr(const TSTRING& strName, cArchive& arch, size_t s
     std::vector<char> data(size+1);
     char* buf = &data[0];
 
-#if defined(O_PATH) 
+#if defined(O_PATH) // A Linuxism that lets us read symlinks w/o bumping the access time.
     int fd = open(strName.c_str(), (O_PATH | O_NOFOLLOW | O_NOATIME));
     int rtn = readlinkat(fd, 0, buf, size);
     close(fd);
@@ -98,7 +98,7 @@ bool cFSPropCalc::GetSymLinkStr(const TSTRING& strName, cArchive& arch, size_t s
     int rtn = readlink( strName.c_str(), buf, size );
 #endif
 
-    if(rtn == -1)
+    if(rtn < 0)
     {
         // Some OSes (like HP-UX) return ERANGE if buffer is too small.
         // This is nonstandard but better than the usual truncate-and-say-you-succeeded

src/twtest/debug_t.cpp

@@ -88,6 +88,11 @@ void TestDebug()
     if(oldOutTarget & cDebug::OUT_FILE)     cDebug::AddOutTarget(cDebug::OUT_FILE);     else cDebug::RemoveOutTarget(cDebug::OUT_FILE);
 
     d.TraceDebug("Exiting...\n");
+
+#ifndef DEBUG
+    TEST("Should always succeed in release builds & cDebug should do nothing");
+#endif
+
 }
 
 void RegisterSuite_Debug()

src/twtest/unixfsservices_t.cpp

@@ -42,6 +42,8 @@
 #include "twtest/test.h"
 #endif
 
+#include <unistd.h>
+
 using namespace std;
 
 
@@ -177,6 +179,9 @@ void TestGetIPAddress()
 
 void TestGetExecutableFilename()
 {
+    if( -1 == access("/bin/sh", F_OK))
+        skip("/bin/sh not found/accessible");
+
     TSTRING filename = _T("sh");
     TSTRING fullpath = _T("/bin/");
     TEST( iFSServices::GetInstance()->GetExecutableFilename(fullpath, filename));