From: NeilBrown <neilb@suse.de>
Date: Fri, 25 Mar 2011 22:03:32 +0000 (+1100)
Subject: Add trace command to adjust tracing level
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=fc277c9163fd0905d716125a076636d57495775b;p=lafs-utils.git

Add trace command to adjust tracing level

Signed-off-by: NeilBrown <neilb@suse.de>
---

diff --git a/tools/lafs.c b/tools/lafs.c
index dc62aa7..6e5735d 100644
--- a/tools/lafs.c
+++ b/tools/lafs.c
@@ -1648,6 +1648,33 @@ static void c_flush(struct state *st, void **args)
 		printf("Inode %d flushed\n", (int)inode->inum);
 }
 
+/****** TRACE ******/
+static char help_trace[] = "Control internal tracing";
+static struct args args_trace[] = {
+	{ "LEVEL", opaque, -1, {NULL}, "New tracing verbosity level"},
+	TERMINAL_ARG
+};
+static void c_trace(struct state *st, void **args)
+{
+	char *levelstr = args[1];
+	int level = 1;
+	extern int lafs_trace_level;
+	int old = lafs_trace_level;
+	if (levelstr) {
+		if (get_int(levelstr, &level) < 0) {
+			printf("trace: %s not a valid number\n", levelstr);
+			return;
+		}
+	}
+	if (st->verbose) {
+		if (level == old)
+			printf("Tracing unchanged at %d\n", old);
+		else
+			printf("Tracing change from %d to %d\n", old, level);
+	}
+	lafs_trace_level = level;
+}
+
 /***********************************************************/
 /* list of all commands - preferably in alphabetical order */
 #define CMD(x) {#x, c_##x, args_##x, help_##x}
@@ -1665,6 +1692,7 @@ static struct cmd lafs_cmds[] = {
 	CMD(reset),
 	CMD(show),
 	CMD(store),
+	CMD(trace),
 	CMD(write),
 	{ NULL, NULL, NULL, NULL}
 };