Fix: race between lttng-ust getenv() and application setenv()

[lttng-ust.git] / liblttng-ust-ctl / ustctl.c

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index 7b46eda2675caaa00b4b84124c188bd2748650f2..4067758254438c45e2db0363ba55ee8d5d2f08a0 100644 (file)
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -18,6 +18,7 @@
 
 #define _GNU_SOURCE
 #include <string.h>
+#include <lttng/ust-config.h>
 #include <lttng/ust-ctl.h>
 #include <lttng/ust-abi.h>
 #include <lttng/ust-events.h>
@@ -1742,7 +1743,7 @@ int ustctl_get_instance_id(struct ustctl_consumer_stream *stream,
        return client_cb->instance_id(buf, handle, id);
 }
 
-#if defined(__x86_64__) || defined(__i386__) || defined(__ARM_ARCH_7A__)
+#ifdef LTTNG_UST_HAVE_PERF_EVENT
 
 int ustctl_has_perf_counters(void)
 {
@@ -2204,6 +2205,7 @@ static __attribute__((constructor))
 void ustctl_init(void)
 {
        init_usterr();
+       lttng_ust_getenv_init();        /* Needs init_usterr() to be completed. */
        lttng_ust_clock_init();
        lttng_ring_buffer_metadata_client_init();
        lttng_ring_buffer_client_overwrite_init();