1 files changed, 109 insertions, 0 deletions
diff --git a/tracecmd/trace-convert.c b/tracecmd/trace-convert.c
new file mode 100644
index 00000000..88935dc7
--- /dev/null
+++ b/tracecmd/trace-convert.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021, VMware, Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
+ */
+#include <stdlib.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "trace-local.h"
+#include "trace-cmd.h"
+#include "trace-cmd-private.h"
+
+static void convert_file(const char *in, const char *out, int file_version, char *compr)
+{
+	struct tracecmd_input *ihandle;
+	struct tracecmd_output *ohandle;
+
+	ihandle = tracecmd_open_head(in, 0);
+	if (!ihandle)
+		die("error reading %s", in);
+
+	ohandle = tracecmd_copy(ihandle, out, TRACECMD_FILE_CPU_FLYRECORD, file_version, compr);
+	if (!ohandle)
+		die("error writing %s", out);
+
+	tracecmd_output_close(ohandle);
+	tracecmd_close(ihandle);
+}
+
+enum {
+	OPT_file_version	= 254,
+	OPT_compression		= 255,
+};
+
+void trace_convert(int argc, char **argv)
+{
+	char *input_file = NULL;
+	char *output_file = NULL;
+	char *compression = NULL;
+	int file_version = tracecmd_default_file_version();
+	int c;
+
+	if (argc < 2)
+		usage(argv);
+
+	if (strcmp(argv[1], "convert") != 0)
+		usage(argv);
+
+	for (;;) {
+		int option_index = 0;
+		static struct option long_options[] = {
+			{"compression", required_argument, NULL, OPT_compression},
+			{"file-version", required_argument, NULL, OPT_file_version},
+			{"help", no_argument, NULL, '?'},
+			{NULL, 0, NULL, 0}
+		};
+
+		c = getopt_long (argc-1, argv+1, "+hi:o:", long_options, &option_index);
+		if (c == -1)
+			break;
+		switch (c) {
+		case 'i':
+			if (input_file)
+				die("Only one input file is supported, %s already set",
+				    input_file);
+			input_file = optarg;
+			break;
+		case 'o':
+			if (output_file)
+				die("Only one output file is supported, %s already set",
+				    output_file);
+			output_file = optarg;
+			break;
+		case OPT_compression:
+			if (strcmp(optarg, "any") && strcmp(optarg, "none") &&
+			    !tracecmd_compress_is_supported(optarg, NULL))
+				die("Compression algorithm  %s is not supported", optarg);
+			compression = optarg;
+			break;
+		case OPT_file_version:
+			file_version = atoi(optarg);
+			if (file_version < FILE_VERSION_MIN || file_version > FILE_VERSION_MAX)
+				die("Unsupported file version %d, "
+				    "supported versions are from %d to %d",
+				    file_version, FILE_VERSION_MIN, FILE_VERSION_MAX);
+
+			break;
+		case 'h':
+		case '?':
+		default:
+			usage(argv);
+		}
+	}
+
+	if ((argc - optind) >= 2) {
+		if (output_file)
+			usage(argv);
+		output_file = argv[optind + 1];
+	}
+
+	if (!input_file)
+		input_file = DEFAULT_INPUT_FILE;
+	if (!output_file)
+		usage(argv);
+
+	convert_file(input_file, output_file, file_version, compression);
+}