1 files changed, 72 insertions, 0 deletions
diff --git a/lib/zlog_live.h b/lib/zlog_live.h
new file mode 100644
index 0000000..17245fe
--- /dev/null
+++ b/lib/zlog_live.h
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Copyright (c) 2019-22  David Lamparter, for NetDEF, Inc.
+ */
+
+#ifndef _FRR_ZLOG_LIVE_H
+#define _FRR_ZLOG_LIVE_H
+
+#include "printfrr.h"
+
+struct zlog_live_hdr {
+	/* timestamp (CLOCK_REALTIME) */
+	uint64_t ts_sec;
+	uint32_t ts_nsec;
+
+	/* length of zlog_live_hdr, including variable length bits and
+	 * possible future extensions - aka start of text
+	 */
+	uint32_t hdrlen;
+
+	/* process & thread ID, meaning depends on OS */
+	int64_t pid;
+	int64_t tid;
+
+	/* number of lost messages due to best-effort non-blocking mode */
+	uint32_t lost_msgs;
+	/* syslog priority value */
+	uint32_t prio;
+	/* flags: currently unused */
+	uint32_t flags;
+	/* length of message text - extra data (e.g. future key/value metadata)
+	 * may follow after it
+	 */
+	uint32_t textlen;
+	/* length of "[XXXXX-XXXXX][EC 0] " header; consumer may want to skip
+	 * over it if using the raw values below.  Note that this text may be
+	 * absent depending on "log error-category" and "log unique-id"
+	 * settings
+	 */
+	uint32_t texthdrlen;
+
+	/* xref unique identifier, "XXXXX-XXXXX\0" = 12 bytes */
+	char uid[12];
+	/* EC value */
+	uint32_t ec;
+
+	/* recorded printf formatting argument positions (variable length) */
+	uint32_t n_argpos;
+	struct fmt_outpos argpos[0];
+};
+
+struct zlt_live;
+
+struct zlog_live_cfg {
+	struct zlt_live *target;
+
+	/* nothing else here */
+};
+
+extern void zlog_live_open(struct zlog_live_cfg *cfg, int prio_min,
+			   int *other_fd);
+extern void zlog_live_open_fd(struct zlog_live_cfg *cfg, int prio_min, int fd);
+
+static inline bool zlog_live_is_null(struct zlog_live_cfg *cfg)
+{
+	return cfg->target == NULL;
+}
+
+extern void zlog_live_close(struct zlog_live_cfg *cfg);
+extern void zlog_live_disown(struct zlog_live_cfg *cfg);
+
+#endif /* _FRR_ZLOG_5424_H */