Relocating everything in the repo s.t. it can be merged into

the columnstore repo.

storage-manager/src/TruncateTask.cpp

@@ -0,0 +1,86 @@
+/* Copyright (C) 2019 MariaDB Corporation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; version 2 of
+   the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+
+#include "TruncateTask.h"
+#include <errno.h>
+#include "messageFormat.h"
+#include "SMLogging.h"
+
+using namespace std;
+
+namespace storagemanager
+{
+
+TruncateTask::TruncateTask(int sock, uint len) : PosixTask(sock, len)
+{
+}
+
+TruncateTask::~TruncateTask()
+{
+}
+
+#define check_error(msg, ret) \
+    if (!success) \
+    { \
+        handleError(msg, errno); \
+        return ret; \
+    }
+
+bool TruncateTask::run()
+{
+    SMLogging* logger = SMLogging::get();
+    bool success;
+    uint8_t buf[1024] = {0};
+    
+    if (getLength() > 1023) {
+        handleError("TruncateTask read", ENAMETOOLONG);
+        return false;
+    }
+    
+    success = read(buf, getLength());
+    check_error("TruncateTask read", false);
+    truncate_cmd *cmd = (truncate_cmd *) buf;
+    
+    #ifdef SM_TRACE
+    logger->log(LOG_DEBUG,"truncate %s newlength %i.",cmd->filename,cmd->length);
+    #endif
+    int err;
+    
+    try
+    {
+        err = ioc->truncate(cmd->filename, cmd->length);
+    }
+    catch (exception &e)
+    {
+        logger->log(LOG_DEBUG, "TruncateTask: caught '%s'", e.what());
+        errno = EIO;
+        err = -1;
+    }
+    if (err)
+    {
+        handleError("TruncateTask truncate", errno);
+        return true;
+    }
+    
+    sm_response *resp = (sm_response *) buf;
+    resp->returnCode = 0;
+    success = write(*resp, 0);
+    return success;
+}
+
+}