1 files changed, 113 insertions, 0 deletions

diff --git a/trace-options.c b/trace-options.c
new file mode 100644
index 0000000..70c6343
--- /dev/null
+++ b/trace-options.c
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License (not later!)
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#define _LARGEFILE64_SOURCE
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <unistd.h>
+
+#include "trace-local.h"
+
+enum {
+        OPT_kallsyms    = 253,
+        OPT_events      = 254,
+        OPT_cpu         = 255,
+};
+
+struct option_list {
+        struct option_list      *next;
+        struct plugin_option    *op;
+};
+
+static struct plugin_list {
+        struct plugin_list      *next;
+        const char              *name;
+        struct option_list      *ops;
+} *plugin_list;
+
+static void add_option(struct plugin_option *option)
+{
+        struct plugin_list *pl;
+        struct option_list *po;
+        const char *name;
+
+        name = option->plugin_alias ? : option->file;
+
+        for (pl = plugin_list; pl; pl = pl->next) {
+                if (strcmp(name, pl->name) == 0)
+                        break;
+        }
+        if (!pl) {
+                pl = malloc_or_die(sizeof(*pl));
+                memset(pl, 0, sizeof(*pl));
+                pl->name = name;
+                pl->next = plugin_list;
+                plugin_list = pl;
+        };
+        po = malloc_or_die(sizeof(*po));
+        po->next = pl->ops;
+        pl->ops = po;
+        po->op = option;
+}
+
+void trace_option (int argc, char **argv)
+{
+        struct plugin_option *options;
+        struct plugin_option *op;
+        struct plugin_list *pl;
+        struct plugin_list *npl;
+        struct option_list *po;
+        struct option_list *npo;
+
+        if (argc < 2)
+                usage(argv);
+
+        if (strcmp(argv[1], "options") != 0)
+                usage(argv);
+
+        options = trace_util_read_plugin_options();
+        if (!options) {
+                printf("No plugin options found\n");
+                goto out;
+        }
+
+        /* Group them up according to aliases */
+        for (op = options; op; op = op->next)
+                add_option(op);
+
+        for (pl = plugin_list; pl; pl = npl) {
+                npl = pl->next;
+                printf("%s\n", pl->name);
+                for (po = pl->ops; po; po = npo) {
+                        npo = po->next;
+                        printf("  %s: %s\n",
+                               po->op->name, po->op->description);
+                        free(po);
+                }
+                free(pl);
+        }
+
+ out:
+        trace_util_free_options(options);
+        return;
+}