Avoid /tmp when running some tests

Many features in xrootd require file system support for extended file
attributes. Tests that run tests on these features fail if the file
system does not support them. The /tmp directory in many Linux
installations is using a tmpfs partition. The tmpfs file system does
not support extended file attributes, so some tests that use /tmp to
store files fail.

This commit changes some affected tests so that they create the
temporary directory containing the test files in the current working
directory instead of /tmp.

Example of failure:

17/34 Test #20: XrdEc::AlignedWriteTest ...................................................***Failed    0.07 sec
You have selected:

Selected tests/
  Selected tests/MicroTest::AlignedWriteTest

Running:

.F

MicroTest.cc:506:Assertion
Test name: MicroTest::AlignedWriteTest
assertion failed
- Expression: _st.IsOK()
- [*status]: [ERROR] Internal error: std::bad_alloc

Failures !!!
Run: 1   Failure total: 1   Failures: 1   Errors: 0

The following tests FAILED:
	 20 - XrdEc::AlignedWriteTest (Failed)
	 21 - XrdEc::SmallWriteTest (Failed)
	 22 - XrdEc::BigWriteTest (Failed)
	 23 - XrdEc::VectorReadTest (Failed)
	 24 - XrdEc::IllegalVectorReadTest (Failed)
	 25 - XrdEc::AlignedWrite1MissingTest (Failed)
	 26 - XrdEc::AlignedWrite2MissingTest (Failed)
	 27 - XrdEc::AlignedWriteTestIsalCrcNoMt (Failed)
	 28 - XrdEc::SmallWriteTestIsalCrcNoMt (Failed)
	 29 - XrdEc::BigWriteTestIsalCrcNoMt (Failed)
	 30 - XrdEc::AlignedWrite1MissingTestIsalCrcNoMt (Failed)
	 31 - XrdEc::AlignedWrite2MissingTestIsalCrcNoMt (Failed)

In addition to addressing the above failures, the commit also
addresses the following warnings during the XRootD::smoke-test test:

34: setfattr: /tmp/xrdfs-test-ChGSEb/01.ref: Operation not supported
34: Extended attributes not supported, using downloaded checksums for server checks
34: setfattr: /tmp/xrdfs-test-ChGSEb/02.ref: Operation not supported
34: Extended attributes not supported, using downloaded checksums for server checks
34: setfattr: /tmp/xrdfs-test-ChGSEb/03.ref: Operation not supported
34: Extended attributes not supported, using downloaded checksums for server checks

tests/XRootD/smoke.sh

@@ -39,7 +39,7 @@ ${XRDFS} ${HOST} statvfs /
 ${XRDFS} ${HOST} spaceinfo /
 
 # create local temporary directory
-TMPDIR=$(mktemp -d /tmp/xrdfs-test-XXXXXX)
+TMPDIR=$(mktemp -d ${PWD}/xrdfs-test-XXXXXX)
 
 # cleanup after ourselves if something fails
 trap "rm -rf ${TMPDIR}" EXIT

tests/XrdEc/MicroTest.cc

@@ -32,6 +32,8 @@
 
 #include "XrdCl/XrdClMessageUtils.hh"
 
+#include "XrdSys/XrdSysPlatform.hh"
+
 #include "XrdZip/XrdZipCDFH.hh"
 
 #include <string>
@@ -323,7 +325,9 @@ void XrdEcTests::Init( bool usecrc32c )
   objcfg.reset( new ObjCfg( "test.txt", nbdata, nbparity, chsize, usecrc32c, true ) );
   rawdata.clear();
 
-  char tmpdir[32] = "/tmp/xrootd-xrdec-XXXXXX";
+  char tmpdir[MAXPATHLEN];
+  EXPECT_TRUE( getcwd(tmpdir, MAXPATHLEN - 21) );
+  strcat(tmpdir, "/xrootd-xrdec-XXXXXX");
   // create the data directory
   EXPECT_TRUE( mkdtemp(tmpdir) );
   datadir = tmpdir;

tests/XrdEcTests/MicroTest.cc

@@ -34,6 +34,8 @@
 
 #include "XrdZip/XrdZipCDFH.hh"
 
+#include "XrdSys/XrdSysPlatform.hh"
+
 #include <string>
 #include <memory>
 #include <limits>
@@ -280,7 +282,9 @@ void MicroTest::Init( bool usecrc32c )
   objcfg.reset( new ObjCfg( "test.txt", nbdata, nbparity, chsize, usecrc32c, true ) );
   rawdata.clear();
 
-  char tmpdir[32] = "/tmp/xrootd-xrdec-XXXXXX";
+  char tmpdir[MAXPATHLEN];
+  CPPUNIT_ASSERT( getcwd(tmpdir, MAXPATHLEN - 21) );
+  strcat(tmpdir, "/xrootd-xrdec-XXXXXX");
   // create the data directory
   CPPUNIT_ASSERT( mkdtemp(tmpdir) );
   datadir = tmpdir;