Add support for LTTNG_UST_HOME

[lttng-ust.git] / src / lib / lttng-ust / lttng-ust-comm.c

diff --git a/src/lib/lttng-ust/lttng-ust-comm.c b/src/lib/lttng-ust/lttng-ust-comm.c
index e57caa12f7e23c73765b990fa804cf76685ba7f6..e206456f0d98060ea20c2310c4f993c1d6494ece 100644 (file)
--- a/src/lib/lttng-ust/lttng-ust-comm.c
+++ b/src/lib/lttng-ust/lttng-ust-comm.c
@@ -370,16 +370,26 @@ static char *get_map_shm(struct sock_info *sock_info);
 /*
  * Returns the HOME directory path. Caller MUST NOT free(3) the returned
  * pointer.
+ * The following env are checked in order of priority:
+ *  1 - LTTNG_UST_HOME
+ *  2 - LTTNG_HOME
+ *  3 - HOME
  */
 static
 const char *get_lttng_home_dir(void)
 {
        const char *val;
 
+       val = (const char *) lttng_ust_getenv("LTTNG_UST_HOME");
+       if (val != NULL) {
+               return val;
+       }
+
        val = (const char *) lttng_ust_getenv("LTTNG_HOME");
        if (val != NULL) {
                return val;
        }
+
        return (const char *) lttng_ust_getenv("HOME");
 }