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From: "Tzvetomir Stoyanov (VMware)" <tz.stoyanov@gmail.com>
To: rostedt@goodmis.org
Cc: linux-trace-devel@vger.kernel.org
Subject: [PATCH 02/10] trace-cmd dump: Print compression header
Date: Mon, 13 Sep 2021 15:50:31 +0300	[thread overview]
Message-ID: <20210913125039.3680986-3-tz.stoyanov@gmail.com> (raw)
In-Reply-To: <20210913125039.3680986-1-tz.stoyanov@gmail.com>

Dump the compression header of trace file version 7

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 tracecmd/trace-dump.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tracecmd/trace-dump.c b/tracecmd/trace-dump.c
index d0278f7e..3cce231f 100644
--- a/tracecmd/trace-dump.c
+++ b/tracecmd/trace-dump.c
@@ -217,6 +217,29 @@ static void dump_initial_format(int fd)
 	do_print(SUMMARY, "\t\t%d\t[Page size, bytes]\n", val4);
 }
 
+static void dump_compress(int fd)
+{
+	char zname[DUMP_SIZE];
+	char zver[DUMP_SIZE];
+
+	if (file_version < FILE_VERSION_COMPRESSION)
+		return;
+
+	/* get compression header */
+	if (read_file_string(fd, zname, DUMP_SIZE))
+		die("no compression header");
+	if (read_file_string(fd, zver, DUMP_SIZE))
+		die("no compression version");
+	do_print((SUMMARY), "\t\t%s\t[Compression algorithm]\n", zname);
+	do_print((SUMMARY), "\t\t%s\t[Compression version]\n", zver);
+
+	if (strcmp(zname, "none")) {
+		compress = tracecmd_compress_alloc(zname, zver, fd, tep, NULL);
+		if (!compress)
+			die("cannot uncompress the file");
+	}
+}
+
 static void dump_header_page(int fd)
 {
 	unsigned long long size;
@@ -715,6 +738,7 @@ static void dump_file(const char *file)
 	do_print(SUMMARY, "\n Tracing meta data in file %s:\n", file);
 
 	dump_initial_format(fd);
+	dump_compress(fd);
 	dump_header_page(fd);
 	dump_header_event(fd);
 	dump_ftrace_events_format(fd);
-- 
2.31.1


  parent reply	other threads:[~2021-09-13 12:50 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-13 12:50 [PATCH 00/10] trace-cmd dump - v7 update Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 01/10] trace-cmd dump: Add helpers for processing trace file version 7 Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` Tzvetomir Stoyanov (VMware) [this message]
2021-09-13 12:50 ` [PATCH 03/10] trace-cmd dump: Add helpers for processing trace file sections Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 04/10] trace-cmd dump: Read recursively all options sections Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 05/10] trace-cmd dump: Read extended BUFFER option Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 06/10] trace-cmd dump: Dump sections Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 07/10] trace-cmd dump: Dump trace file version 7 Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 08/10] trace-cmd dump: Dump sections content Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 09/10] trace-cmd dump: Add new argument --sections Tzvetomir Stoyanov (VMware)
2021-09-13 12:50 ` [PATCH 10/10] trace-cmd dump: Align better the output of flyrecord dump Tzvetomir Stoyanov (VMware)

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