e1_recorder: Add signal handlers for log file rotation + talloc report

src/e1_recorder.c

@@ -1,3 +1,5 @@
+#include <signal.h>
+
 #include <osmocom/core/signal.h>
 #include <osmocom/core/logging.h>
 #include <osmocom/core/application.h>
@@ -82,6 +84,18 @@ struct vty_app_info vty_info = {
 static void *rec_tall_ctx;
 struct e1_recorder g_recorder;
 
+static void signal_handler(int signo)
+{
+	switch (signo) {
+	case SIGHUP:
+		storage_close();
+		break;
+	case SIGUSR1:
+		talloc_report(rec_tall_ctx, stderr);
+		break;
+	}
+}
+
 int main(int argc, char **argv)
 {
 	int rc;
@@ -96,6 +110,9 @@ int main(int argc, char **argv)
 	e1inp_vty_init();
 	recorder_vty_init();
 
+	signal(SIGHUP, &signal_handler);
+	signal(SIGUSR1, &signal_handler);
+
 	rc = vty_read_config_file("osmo-e1-recorder.cfg", NULL);
 	if (rc < 0)
 		exit(1);

src/storage.c

@@ -27,16 +27,24 @@ static const char *storage_gen_filename(void)
 	return buf;
 }
 
+void storage_close(void)
+{
+	LOGP(DMAIN, LOGL_INFO, "Closing Log file\n");
+	close(g_out_fd);
+	g_out_fd = -1;
+}
+
 static int storage_reopen_if_needed(void)
 {
 	if (g_written_bytes / (1024*1024) >= g_recorder.max_file_size_mb) {
-		close(g_out_fd);
-		g_out_fd = -1;
+		storage_close();
+		/* we re-open below */
 	}
 
 	if (g_out_fd < 0) {
 		int rc;
 		const char *fname = storage_gen_filename();
+		LOGP(DMAIN, LOGL_INFO, "Opening Log file %s\n", fname);
 		rc = chdir(g_recorder.storage_path);
 		if (rc < 0) {
 			LOGP(DMAIN, LOGL_ERROR, "Unable to chdir(%s): %s\n",

src/storage.h

@@ -30,6 +30,7 @@ struct msgb;
 struct e1inp_ts;
 
 int e1frame_store(struct e1inp_ts *ts, struct msgb *msg, enum osmo_e1cap_capture_mode mode);
+void storage_close(void);
 
 struct osmo_e1cap_file;
 struct osmo_e1cap_file *osmo_e1cap_open(void *ctx, const char *path);