Fix: liblttng-ctl: unreported truncations when copying strings

[lttng-tools.git] / src / lib / lttng-ctl / rotate.c

diff --git a/src/lib/lttng-ctl/rotate.c b/src/lib/lttng-ctl/rotate.c
index 2dbaa46a3eaf9d955b3d50f030c0504421aa3260..1002e230b64e504b55583e1770aa49b42d38a88c 100644 (file)
--- a/src/lib/lttng-ctl/rotate.c
+++ b/src/lib/lttng-ctl/rotate.c
@@ -219,8 +219,11 @@ int lttng_rotate_session(const char *session_name,
 
        memset(&lsm, 0, sizeof(lsm));
        lsm.cmd_type = LTTNG_ROTATE_SESSION;
-       lttng_ctl_copy_string(lsm.session.name, session_name,
-                       sizeof(lsm.session.name));
+
+       ret = lttng_strncpy(lsm.session.name, session_name,
+                           sizeof(lsm.session.name));
+       /* Source length already validated. */
+       assert(ret == 0);
 
        ret = lttng_ctl_ask_sessiond(&lsm, (void **) &rotate_return);
        if (ret <= 0) {
@@ -282,8 +285,10 @@ enum lttng_rotation_status lttng_rotation_update_schedule(
 
        memset(&lsm, 0, sizeof(lsm));
        lsm.cmd_type = LTTNG_ROTATION_SET_SCHEDULE;
-       lttng_ctl_copy_string(lsm.session.name, session_name,
+       ret = lttng_strncpy(lsm.session.name, session_name,
                        sizeof(lsm.session.name));
+       /* Source length already validated. */
+       assert(ret == 0);
 
        lsm.u.rotation_set_schedule.type = (uint32_t) schedule->type;
        switch (schedule->type) {
@@ -366,10 +371,19 @@ int get_schedules(const char *session_name,
        struct lttng_rotation_schedules *schedules = NULL;
        struct lttng_rotation_schedule *periodic = NULL, *size = NULL;
 
+       if (!session_name) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
        memset(&lsm, 0, sizeof(lsm));
        lsm.cmd_type = LTTNG_SESSION_LIST_ROTATION_SCHEDULES;
-       lttng_ctl_copy_string(lsm.session.name, session_name,
+       ret = lttng_strncpy(lsm.session.name, session_name,
                        sizeof(lsm.session.name));
+       if (ret) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
 
        ret = lttng_ctl_ask_sessiond(&lsm, (void **) &schedules_comm);
        if (ret < 0) {