Check for context name duplicata

[lttng-modules.git] / lttng-context-ppid.c

diff --git a/lttng-context-ppid.c b/lttng-context-ppid.c
index 342aa343337b2a55a380da763651a9e22225cf96..738f7e6882d518d95b2ebe559ede4e683363bbf9 100644 (file)
--- a/lttng-context-ppid.c
+++ b/lttng-context-ppid.c
@@ -43,11 +43,14 @@ void ppid_record(struct lttng_ctx_field *field,
 int lttng_add_ppid_to_ctx(struct lttng_ctx **ctx)
 {
        struct lttng_ctx_field *field;
-       int ret;
 
        field = lttng_append_context(ctx);
        if (!field)
-               return ret;
+               return -ENOMEM;
+       if (lttng_find_context(*ctx, "ppid")) {
+               lttng_remove_context_field(ctx, field);
+               return -EEXIST;
+       }
        field->event_field.name = "ppid";
        field->event_field.type.atype = atype_integer;
        field->event_field.type.u.basic.integer.size = sizeof(pid_t) * CHAR_BIT;