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[8/8] trace-cmd: Add new function to set log level

Message ID 20210428074149.757163-9-tz.stoyanov@gmail.com (mailing list archive)
State Superseded
Headers show
Series Changes to trace-cmd logs | expand

Commit Message

Tzvetomir Stoyanov (VMware) April 28, 2021, 7:41 a.m. UTC 
Introduce a new trace-cmd internal function to set the application log
level.
 trace_set_verbose()
The log level can be set using string with log id or log name.

Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
---
 tracecmd/include/trace-local.h |  2 ++
 tracecmd/trace-cmd.c           | 41 ++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
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Patch

diff --git a/tracecmd/include/trace-local.h b/tracecmd/include/trace-local.h
index 1218de12..cb929be4 100644
--- a/tracecmd/include/trace-local.h
+++ b/tracecmd/include/trace-local.h
@@ -36,6 +36,8 @@  void usage(char **argv);
 extern int silence_warnings;
 extern int show_status;
 
+int trace_set_verbose(char *level);
+
 struct pid_record_data {
 	int			pid;
 	int			brass[2];
diff --git a/tracecmd/trace-cmd.c b/tracecmd/trace-cmd.c
index 60cd3ea1..4e4a73af 100644
--- a/tracecmd/trace-cmd.c
+++ b/tracecmd/trace-cmd.c
@@ -45,6 +45,47 @@  void *malloc_or_die(unsigned int size)
 	return data;
 }
 
+static struct trace_log_severity {
+	int		id;
+	const char	*name;
+} log_severtity[] = {
+	{ .id = TEP_LOG_NONE, .name = "none" },
+	{ .id = TEP_LOG_CRITICAL, .name = "crit" },
+	{ .id = TEP_LOG_ERROR, .name = "err" },
+	{ .id = TEP_LOG_WARNING, .name = "warn" },
+	{ .id = TEP_LOG_INFO, .name = "info" },
+	{ .id = TEP_LOG_DEBUG, .name = "debug" },
+	{ .id = TEP_LOG_ALL, .name = "all" },
+};
+
+int trace_set_verbose(char *level)
+{
+	int id;
+
+	if (!level)
+		return -1;
+
+	if (isdigit(level[0])) {
+		id = atoi(level);
+		if (id >= TEP_LOG_NONE && id <= TEP_LOG_ALL) {
+			tracecmd_set_loglevel(id);
+			return 0;
+		}
+	} else {
+		int size = sizeof(log_severtity) / sizeof(log_severtity[0]);
+		int i;
+
+		for (i = 0; i < size; i++) {
+			if (strlen(level) >= strlen(log_severtity[i].name) &&
+			    !strncmp(level, log_severtity[i].name, strlen(log_severtity[i].name))) {
+				tracecmd_set_loglevel(log_severtity[i].id);
+				return 0;
+			}
+		}
+	}
+
+	return -1;
+}
 
 /**
  * struct command