Fix: Java agent: close session daemon socket on error

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

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index 39c8baa4b4fea4b586a9323290b6287acd4e86f4..ea5ab9dc4ed3ce29cd3dad50b1cc16c4bc32167a 100644 (file)
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -21,6 +21,7 @@
 #include <stdint.h>
 #include <string.h>
 #include <sys/mman.h>
+#include <unistd.h>
 
 #include <lttng/ust-config.h>
 #include <lttng/ust-ctl.h>
@@ -1853,7 +1854,8 @@ int ustctl_recv_reg_msg(int sock,
        *uint64_t_alignment = reg_msg.uint64_t_alignment;
        *long_alignment = reg_msg.long_alignment;
        memcpy(name, reg_msg.name, LTTNG_UST_ABI_PROCNAME_LEN);
-       if (reg_msg.major != LTTNG_UST_ABI_MAJOR_VERSION) {
+       if (reg_msg.major < LTTNG_UST_ABI_MAJOR_VERSION_OLDEST_COMPATIBLE ||
+                       reg_msg.major > LTTNG_UST_ABI_MAJOR_VERSION) {
                return -LTTNG_UST_ERR_UNSUP_MAJOR;
        }