[PATCH v4 25/25] trace-cmd report: Add new parameter for trace file version

["Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>]

By default, "trace-cmd report" writes in trace file version 6.
A new parameter is added, which can be used to set desired version
the output trace file.
 "trace-cmd report --file-version <version>"

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 tracecmd/trace-record.c | 21 +++++++++++++++++++++
 tracecmd/trace-usage.c  |  2 +-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/tracecmd/trace-record.c b/tracecmd/trace-record.c
index 338a6a8a..fab34361 100644
--- a/tracecmd/trace-record.c
+++ b/tracecmd/trace-record.c
@@ -3698,6 +3698,8 @@ static struct tracecmd_output *create_net_output(struct common_record_context *c
 	out = tracecmd_output_allocate(-1);
 	if (!out)
 		return NULL;
+	if (ctx->file_version && tracecmd_output_set_version(out, ctx->file_version))
+		goto error;
 	if (tracecmd_output_set_msg(out, msg_handle))
 		goto error;
 	if (tracecmd_output_write_headers(out, listed_events))
@@ -3744,6 +3746,8 @@ setup_connection(struct buffer_instance *instance, struct common_record_context
 		network_handle = tracecmd_output_allocate(msg_handle->fd);
 		if (!network_handle)
 			goto error;
+		if (tracecmd_output_set_version(network_handle, ctx->file_version))
+			goto error;
 		if (tracecmd_output_write_headers(network_handle, listed_events))
 			goto error;
 		tracecmd_set_quiet(network_handle, quiet);
@@ -4475,6 +4479,8 @@ static struct tracecmd_output *create_output(struct common_record_context *ctx)
 	out = tracecmd_output_allocate(fd);
 	if (!out)
 		goto error;
+	if (ctx->file_version && tracecmd_output_set_version(out, ctx->file_version))
+		goto error;
 	if (tracecmd_output_write_headers(out, listed_events))
 		goto error;
 	return out;
@@ -5785,6 +5791,7 @@ void init_top_instance(void)
 }
 
 enum {
+	OPT_file_ver		= 238,
 	OPT_verbose		= 239,
 	OPT_tsc2nsec		= 240,
 	OPT_fork		= 241,
@@ -6224,6 +6231,7 @@ static void parse_record_options(int argc,
 			{"tsc2nsec", no_argument, NULL, OPT_tsc2nsec},
 			{"poll", no_argument, NULL, OPT_poll},
 			{"verbose", optional_argument, NULL, OPT_verbose},
+			{"file-version", required_argument, NULL, OPT_file_ver},
 			{NULL, 0, NULL, 0}
 		};
 
@@ -6649,6 +6657,19 @@ static void parse_record_options(int argc,
 			cmd_check_die(ctx, CMD_set, *(argv+1), "--poll");
 			recorder_flags |= TRACECMD_RECORD_POLL;
 			break;
+		case OPT_file_ver:
+			cmd_check_die(ctx, CMD_start, *(argv+1), "--file_version");
+			cmd_check_die(ctx, CMD_set, *(argv+1), "--file_version");
+			cmd_check_die(ctx, CMD_extract, *(argv+1), "--file_version");
+			cmd_check_die(ctx, CMD_stream, *(argv+1), "--file_version");
+			cmd_check_die(ctx, CMD_profile, *(argv+1), "--file_version");
+			ctx->file_version = atoi(optarg);
+			if (ctx->file_version < FILE_VERSION_MIN ||
+			    ctx->file_version > FILE_VERSION_MAX)
+				die("Unsupported file version %d, "
+				    "supported versions are from %d to %d",
+				    ctx->file_version, FILE_VERSION_MIN, FILE_VERSION_MAX);
+			break;
 		case OPT_quiet:
 		case 'q':
 			quiet = true;
diff --git a/tracecmd/trace-usage.c b/tracecmd/trace-usage.c
index 32b38bfd..ac12b066 100644
--- a/tracecmd/trace-usage.c
+++ b/tracecmd/trace-usage.c
@@ -69,7 +69,7 @@ static struct usage_help usage_help[] = {
 		"               If 0 is specified, no loop is performed - timestamps offset is calculated only twice,"
 		"                                                         at the beginnig and at the end of the trace\n"
 		"          --poll don't block while reading from the trace buffer\n"
-		"          --verbose 'level' Set the desired log level\n"
+		"          --file-version set the desired trace file version\n"
 	},
 	{
 		"set",
-- 
2.31.1