Common include file for SLAPI plugin logging

Consolidate the common logging macros into common/util.h and use them
in SLAPI plugins instead of calling slapi_log_error() directly.

https://fedorahosted.org/freeipa/ticket/408

Signed-off-by: Simo Sorce <ssorce@redhat.com>

daemons/ipa-slapi-plugins/common/util.h

@@ -0,0 +1,39 @@
+#ifndef _SLAPI_PLUGINS_UTIL_H
+#define _SLAPI_PLUGINS_UTIL_H
+
+#define EOK 0
+#define EFAIL -1
+
+#ifndef discard_const
+#define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
+#endif
+
+#define log_func discard_const(__func__)
+
+#define LOG_PLUGIN_NAME(NAME, fmt, ...) \
+    slapi_log_error(SLAPI_LOG_PLUGIN, \
+                    NAME, \
+                    fmt, ##__VA_ARGS__)
+
+#define LOG(fmt, ...) \
+    LOG_PLUGIN_NAME(IPA_PLUGIN_NAME, fmt, ##__VA_ARGS__)
+
+#define LOG_CONFIG_NAME(NAME, fmt, ...) \
+    slapi_log_error(SLAPI_LOG_CONFIG, \
+                    NAME, \
+                    fmt, ##__VA_ARGS__)
+
+#define LOG_CONFIG(fmt, ...) \
+    LOG_CONFIG_NAME(IPA_PLUGIN_NAME, fmt, ##__VA_ARGS__)
+
+#define LOG_FATAL(fmt, ...) \
+    slapi_log_error(SLAPI_LOG_FATAL, log_func, \
+                    "[file %s, line %d]: " fmt, \
+                    __FILE__, __LINE__, ##__VA_ARGS__)
+
+#define LOG_TRACE(fmt, ...) \
+    slapi_log_error(SLAPI_LOG_TRACE, log_func, fmt, ##__VA_ARGS__)
+
+#define LOG_OOM() LOG_FATAL("Out of Memory!\n")
+
+#endif /* _SLAPI_PLUGINS_UTIL_H */