diff mbox series

[v5,08/10] trace-cmd dump: Dump sections content

Message ID 20211202122907.44008-9-tz.stoyanov@gmail.com (mailing list archive)
State Superseded
Headers show
Series trace-cmd dump - v7 update | expand

Commit Message

Tzvetomir Stoyanov (VMware) Dec. 2, 2021, 12:29 p.m. UTC 
In trace file version 7, dump the content of the headers content, that
are stored as sections. Added logic to dump these headers:
 HEADER_INFO
 FTRACE_EVENTS
 EVENT_FORMATS
 KALLSYM
 PRINTK
 CMDLINES

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 tracecmd/trace-dump.c | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
diff mbox series

Patch

diff --git a/tracecmd/trace-dump.c b/tracecmd/trace-dump.c
index 11a6e1df..b2670744 100644
--- a/tracecmd/trace-dump.c
+++ b/tracecmd/trace-dump.c
@@ -731,6 +731,46 @@  static void dump_option_section(int fd, unsigned int size,
 	do_print(OPTIONS, "%lld\n", sec->offset);
 }
 
+static void dump_sections(int fd)
+{
+	struct file_section *sec = sections;
+	unsigned short flags;
+
+	while (sec) {
+		if (lseek64(fd, sec->offset, SEEK_SET) == (off_t)-1)
+			die("cannot goto option offset %lld", sec->offset);
+
+		dump_section_header(fd, sec->verbosity, &flags);
+
+		if ((flags & TRACECMD_SEC_FL_COMPRESS) && uncompress_block())
+			die("cannot uncompress section block");
+
+		switch (sec->id) {
+		case TRACECMD_OPTION_HEADER_INFO:
+			dump_header_page(fd);
+			dump_header_event(fd);
+			break;
+		case TRACECMD_OPTION_FTRACE_EVENTS:
+			dump_ftrace_events_format(fd);
+			break;
+		case TRACECMD_OPTION_EVENT_FORMATS:
+			dump_events_format(fd);
+			break;
+		case TRACECMD_OPTION_KALLSYMS:
+			dump_kallsyms(fd);
+			break;
+		case TRACECMD_OPTION_PRINTK:
+			dump_printk(fd);
+			break;
+		case TRACECMD_OPTION_CMDLINES:
+			dump_cmdlines(fd);
+			break;
+		}
+		uncompress_reset();
+		sec = sec->next;
+	}
+}
+
 static int dump_options_read(int fd);
 
 static int dump_option_done(int fd, int size)
@@ -952,6 +992,7 @@  static void dump_v7_file(int fd)
 	if (lseek64(fd, offset, SEEK_SET) == (off64_t)-1)
 		die("cannot goto options offset %lld", offset);
 	dump_options(fd);
+	dump_sections(fd);
 }
 
 static void free_sections(void)