X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fenable_events.c;h=18a958d321e6101d1de0c2c6ff00f75fae9e06bd;hb=c138a39bf483662d3aa07bf4740f265a1f1c0f13;hp=2af85fe476eb74abaf71ea7b456a6ee1723408b1;hpb=8571134087a7a1fbd83924ab5b98836ce6ca840a;p=lttng-tools.git

diff --git a/src/bin/lttng/commands/enable_events.c b/src/bin/lttng/commands/enable_events.c
index 2af85fe47..18a958d32 100644
--- a/src/bin/lttng/commands/enable_events.c
+++ b/src/bin/lttng/commands/enable_events.c
@@ -113,11 +113,11 @@ static void usage(FILE *ofp)
 	fprintf(ofp, "                             e.g.:\n");
 	fprintf(ofp, "                               \"*\"\n");
 	fprintf(ofp, "                               \"app_component:na*\"\n");
-	fprintf(ofp, "    --probe [addr | symbol | symbol+offset]\n");
+	fprintf(ofp, "    --probe (addr | symbol | symbol+offset)\n");
 	fprintf(ofp, "                           Dynamic probe.\n");
 	fprintf(ofp, "                           Addr and offset can be octal (0NNN...),\n");
 	fprintf(ofp, "                           decimal (NNN...) or hexadecimal (0xNNN...)\n");
-	fprintf(ofp, "    --function [addr | symbol | symbol+offset]\n");
+	fprintf(ofp, "    --function (addr | symbol | symbol+offset)\n");
 	fprintf(ofp, "                           Dynamic function entry/return probe.\n");
 	fprintf(ofp, "                           Addr and offset can be octal (0NNN...),\n");
 	fprintf(ofp, "                           decimal (NNN...) or hexadecimal (0xNNN...)\n");
@@ -168,7 +168,7 @@ static void usage(FILE *ofp)
 	fprintf(ofp, "                           Expression examples:.\n");
 	fprintf(ofp, "                           \n");
 	fprintf(ofp, "                           'intfield > 500 && intfield < 503'\n");
-	fprintf(ofp, "                           '(stringfield == \"test\" || intfield != 10) && intfield > 33'\n");
+	fprintf(ofp, "                           '(strfield == \"test\" || intfield != 10) && intfield > 33'\n");
 	fprintf(ofp, "                           'doublefield > 1.1 && intfield < 5.3'\n");
 	fprintf(ofp, "                           \n");
 	fprintf(ofp, "                           Wildcards are allowed at the end of strings:\n");
@@ -268,7 +268,11 @@ int loglevel_str_to_value(const char *inputstr)
 	int i = 0;
 	char str[LTTNG_SYMBOL_NAME_LEN];
 
-	while (i < LTTNG_SYMBOL_NAME_LEN && inputstr[i] != '\0') {
+	/*
+	 * Loop up to LTTNG_SYMBOL_NAME_LEN minus one because the NULL bytes is
+	 * added at the end of the loop so a the upper bound we avoid the overflow.
+	 */
+	while (i < (LTTNG_SYMBOL_NAME_LEN - 1) && inputstr[i] != '\0') {
 		str[i] = toupper(inputstr[i]);
 		i++;
 	}
@@ -336,7 +340,7 @@ static int enable_events(char *session_name)
 	} else if (opt_userspace) {
 		dom.type = LTTNG_DOMAIN_UST;
 		/* Default. */
-		dom.buf_type = LTTNG_BUFFER_PER_PID;
+		dom.buf_type = LTTNG_BUFFER_PER_UID;
 	} else {
 		ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
 		ret = CMD_ERROR;