--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rvinterf/l1filter/main.c	Tue Nov 09 23:14:22 2021 +0000
@@ -0,0 +1,87 @@
+/*
+ * This module contains the main() function for l1trace-filter.
+ */
+
+#include <sys/types.h>
+#include <sys/errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "exitcodes.h"
+
+extern char *socket_pathname;
+extern char *rvinterf_ttyport, *rvinterf_Bopt, *rvinterf_lopt, *rvinterf_wopt;
+extern int sock;
+
+char **filter_list;
+
+main(argc, argv)
+	char **argv;
+{
+	extern int optind;
+	extern char *optarg;
+	int c, sopt = 0;
+	fd_set fds;
+
+	while ((c = getopt(argc, argv, "B:l:p:s:w:")) != EOF)
+		switch (c) {
+		case 'B':
+			rvinterf_Bopt = optarg;
+			continue;
+		case 'l':
+			rvinterf_lopt = optarg;
+			continue;
+		case 'p':
+			rvinterf_ttyport = optarg;
+			continue;
+		case 's':
+			socket_pathname = optarg;
+			sopt++;
+			continue;
+		case 'w':
+			rvinterf_wopt = optarg;
+			continue;
+		case '?':
+		default:
+			/* error msg already printed */
+			exit(ERROR_USAGE);
+		}
+	if (!argv[optind]) {
+		fprintf(stderr, "error: no filter keywords specified\n");
+		exit(ERROR_USAGE);
+	}
+	if (rvinterf_ttyport) {
+		if (sopt) {
+			fprintf(stderr,
+			"%s error: -p and -s options are mutually exclusive\n",
+				argv[0]);
+			exit(ERROR_USAGE);
+		}
+		launch_rvinterf(0);
+	} else {
+		if (rvinterf_Bopt || rvinterf_lopt || rvinterf_wopt) {
+			fprintf(stderr,
+"%s error: -B, -l and -w options are meaningful only when launching rvinterf\n",
+				argv[0]);
+			exit(ERROR_USAGE);
+		}
+		connect_local_socket();
+	}
+
+	filter_list = argv + optind;
+	init();
+	for (;;) {
+		FD_ZERO(&fds);
+		FD_SET(sock, &fds);
+		c = select(sock+1, &fds, 0, 0, 0);
+		if (c < 0) {
+			if (errno == EINTR)
+				continue;
+			perror("select");
+			exit(ERROR_UNIX);
+		}
+		if (FD_ISSET(sock, &fds))
+			handle_rvinterf_input();
+		fflush(stdout);
+	}
+}