1 files changed, 80 insertions, 0 deletions
diff --git a/inc/dnbd3/shared/log.h b/inc/dnbd3/shared/log.h
new file mode 100644
index 0000000..2a15f1d
--- /dev/null
+++ b/inc/dnbd3/shared/log.h
@@ -0,0 +1,80 @@
+/*
+ * This file is part of the Distributed Network Block Device 3
+ *
+ * Copyright(c) 2011-2012 Simon Rettberg
+ *
+ * This file may be licensed under the terms of the
+ * GNU General Public License Version 2 (the ``GPL'').
+ *
+ * Software distributed under the License is distributed
+ * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
+ * express or implied. See the GPL for the specific language
+ * governing rights and limitations.
+ *
+ * You should have received a copy of the GPL along with this
+ * program. If not, go to http://www.gnu.org/licenses/gpl.html
+ * or write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef LOG_H_
+#define LOG_H_
+
+#include <stdbool.h>
+#include <unistd.h>
+#include <stdio.h>
+
+typedef unsigned int logmask_t;
+#define LOG_ERROR    ((logmask_t)1)  // Fatal error, server will terminate
+#define LOG_WARNING  ((logmask_t)2)  // Major issue, something is broken but keep running
+#define LOG_MINOR    ((logmask_t)4)  // Minor issue, more of a hickup than serious problem
+#define LOG_INFO     ((logmask_t)8)  // Informational message
+#define LOG_DEBUG1  ((logmask_t)16)  // Debug information, use this for non-spammy stuff
+#define LOG_DEBUG2  ((logmask_t)32)  // Use this for debug messages that will show up a lot
+
+/**
+ * Initialize the logging (constructor)
+ */
+void log_init(void);
+
+/**
+ * Check if cansoleMask | fileMask has all of mask set.
+ */
+bool log_hasMask(const logmask_t mask);
+
+void log_setFileMask(logmask_t mask);
+
+void log_setConsoleMask(logmask_t mask);
+
+void log_setConsoleTimestamps(bool on);
+
+/**
+ * Set console output stream
+ * The output stream can be either stdout or stderr
+ *
+ * Note: A call of this function is optional and only required if the output
+ *       stream should be changed from stdout to stderr since the log
+ *       implementation defaults to the output stream stdout
+ */
+int log_setConsoleOutputStream(FILE *outputStream);
+
+/**
+ * Open or reopen the log file. If path is NULL and the
+ * function was called with a path before, the same path
+ * will be used again.
+ */
+bool log_openLogFile(const char *path);
+
+/**
+ * Add a line to the log
+ */
+void logadd(const logmask_t mask, const char *text, ...)
+	__attribute__ ((format (printf, 2, 3)));
+
+/**
+ * Return last size bytes of log.
+ */
+ssize_t log_fetch(char *buffer, int size);
+
+#endif /* LOG_H_ */