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Diffstat (limited to 'tools/lib/traceevent/event-plugin.c')
-rw-r--r--tools/lib/traceevent/event-plugin.c60
1 files changed, 54 insertions, 6 deletions
diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c
index 136162c03af1..a16756ae3526 100644
--- a/tools/lib/traceevent/event-plugin.c
+++ b/tools/lib/traceevent/event-plugin.c
@@ -18,6 +18,7 @@
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
+#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <dlfcn.h>
@@ -49,6 +50,52 @@ struct plugin_list {
void *handle;
};
+static void lower_case(char *str)
+{
+ if (!str)
+ return;
+ for (; *str; str++)
+ *str = tolower(*str);
+}
+
+static int update_option_value(struct pevent_plugin_option *op, const char *val)
+{
+ char *op_val;
+
+ if (!val) {
+ /* toggle, only if option is boolean */
+ if (op->value)
+ /* Warn? */
+ return 0;
+ op->set ^= 1;
+ return 0;
+ }
+
+ /*
+ * If the option has a value then it takes a string
+ * otherwise the option is a boolean.
+ */
+ if (op->value) {
+ op->value = val;
+ return 0;
+ }
+
+ /* Option is boolean, must be either "1", "0", "true" or "false" */
+
+ op_val = strdup(val);
+ if (!op_val)
+ return -1;
+ lower_case(op_val);
+
+ if (strcmp(val, "1") == 0 || strcmp(val, "true") == 0)
+ op->set = 1;
+ else if (strcmp(val, "0") == 0 || strcmp(val, "false") == 0)
+ op->set = 0;
+ free(op_val);
+
+ return 0;
+}
+
/**
* traceevent_plugin_list_options - get list of plugin options
*
@@ -120,6 +167,7 @@ update_option(const char *file, struct pevent_plugin_option *option)
{
struct trace_plugin_options *op;
char *plugin;
+ int ret = 0;
if (option->plugin_alias) {
plugin = strdup(option->plugin_alias);
@@ -144,9 +192,10 @@ update_option(const char *file, struct pevent_plugin_option *option)
if (strcmp(op->option, option->name) != 0)
continue;
- option->value = op->value;
- option->set ^= 1;
- goto out;
+ ret = update_option_value(option, op->value);
+ if (ret)
+ goto out;
+ break;
}
/* first look for unnamed options */
@@ -156,14 +205,13 @@ update_option(const char *file, struct pevent_plugin_option *option)
if (strcmp(op->option, option->name) != 0)
continue;
- option->value = op->value;
- option->set ^= 1;
+ ret = update_option_value(option, op->value);
break;
}
out:
free(plugin);
- return 0;
+ return ret;
}
/**