ulog: introduce new simple logging api

The ulog api is intended to be used by procd, fstools, ubox etc. to provide
a generic logging api for early boot messages and automatic switching between
syslog / kmsg / stdout depending on the way the process is executed.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/ulog.h b/ulog.h
new file mode 100644
index 0000000..4818b1a
--- /dev/null
+++ b/ulog.h
@@ -0,0 +1,42 @@
+/*
+ * ulog - simple logging functions
+ *
+ * Copyright (C) 2015 Jo-Philipp Wich <jow@openwrt.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __LIBUBOX_ULOG_H
+#define __LIBUBOX_ULOG_H
+
+#include <syslog.h>
+
+enum {
+	ULOG_KMSG   = (1 << 0),
+	ULOG_SYSLOG = (1 << 1),
+	ULOG_STDIO  = (1 << 2)
+};
+
+void ulog_open(int channels, int facility, const char *ident);
+void ulog_close(void);
+
+void ulog_threshold(int threshold);
+
+void ulog(int priority, const char *fmt, ...);
+
+#define ULOG_INFO(fmt, ...) ulog(LOG_INFO, fmt, ## __VA_ARGS__)
+#define ULOG_NOTE(fmt, ...) ulog(LOG_NOTICE, fmt, ## __VA_ARGS__)
+#define ULOG_WARN(fmt, ...) ulog(LOG_WARNING, fmt, ## __VA_ARGS__)
+#define ULOG_ERR(fmt, ...) ulog(LOG_ERR, fmt, ## __VA_ARGS__)
+
+#endif