libblkid: export blkid_init_debug()

Signed-off-by: Karel Zak <kzak@redhat.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/libblkid/src/init.c b/libblkid/src/init.c
new file mode 100644
index 000000000..4ca4db171
--- /dev/null
+++ b/libblkid/src/init.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2008-2013 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+
+/**
+ * SECTION: init
+ * @title: Library initialization
+ * @short_description: initialize debuging
+ */
+
+#include <stdarg.h>
+
+#include "blkidP.h"
+
+int libblkid_debug_mask;
+
+/**
+ * blkid_init_debug:
+ * @mask: debug mask (0xffff to enable full debuging)
+ *
+ * If the @mask is not specified then this function reads
+ * LIBBLKID_DEBUG environment variable to get the mask.
+ *
+ * Already initialized debugging stuff cannot be changed. It does not
+ * have effect to call this function twice.
+ */
+void blkid_init_debug(int mask)
+{
+	if (libblkid_debug_mask & BLKID_DEBUG_INIT)
+		return;
+	if (!mask) {
+		char *str = getenv("LIBBLKID_DEBUG");
+		if (str)
+			libblkid_debug_mask = strtoul(str, 0, 0);
+	} else
+		libblkid_debug_mask = mask;
+
+	libblkid_debug_mask |= BLKID_DEBUG_INIT;
+
+	if (libblkid_debug_mask && libblkid_debug_mask != BLKID_DEBUG_INIT) {
+		const char *ver = NULL;
+		const char *date = NULL;
+
+		DBG(INIT, blkid_debug("library debug mask: 0x%04x",
+				libblkid_debug_mask));
+
+		blkid_get_library_version(&ver, &date);
+		DBG(INIT, blkid_debug("library version: %s [%s]", ver, date));
+	}
+}