Fix: liblttng-ctl: unreported truncations when copying strings

[lttng-tools.git] / src / lib / lttng-ctl / lttng-ctl-helper.h

diff --git a/src/lib/lttng-ctl/lttng-ctl-helper.h b/src/lib/lttng-ctl/lttng-ctl-helper.h
index 8c14e1fdcfd327227f3c97ab7e5331f11a12d0b2..b96ed56e4285da6fffcbd1664b704cb654d91c61 100644 (file)
--- a/src/lib/lttng-ctl/lttng-ctl-helper.h
+++ b/src/lib/lttng-ctl/lttng-ctl-helper.h
@@ -20,7 +20,6 @@
  */
 
 /* Copy helper functions. */
-void lttng_ctl_copy_string(char *dst, const char *src, size_t len);
 void lttng_ctl_copy_lttng_domain(struct lttng_domain *dst,
                struct lttng_domain *src);
 
@@ -37,12 +36,24 @@ int lttng_ctl_ask_sessiond_fds_varlen(struct lttcomm_session_msg *lsm,
                void **user_payload_buf, void **user_cmd_header_buf,
                size_t *user_cmd_header_len);
 
+/*
+ * Sends the lttcomm message to the session daemon and fills the reply payload.
+ *
+ * Return the size of the received data on success or else a negative lttng
+ * error code.
+ */
+LTTNG_HIDDEN
+int lttng_ctl_ask_sessiond_payload(struct lttng_payload_view *message,
+               struct lttng_payload *reply);
+
 /*
  * Calls lttng_ctl_ask_sessiond_fds_varlen() with no expected command header.
  */
-static inline
-int lttng_ctl_ask_sessiond_varlen_no_cmd_header(struct lttcomm_session_msg *lsm,
-               void *vardata, size_t vardata_len, void **user_payload_buf)
+static inline int lttng_ctl_ask_sessiond_varlen_no_cmd_header(
+               struct lttcomm_session_msg *lsm,
+               const void *vardata,
+               size_t vardata_len,
+               void **user_payload_buf)
 {
        return lttng_ctl_ask_sessiond_fds_varlen(lsm, NULL, 0, vardata,
                vardata_len, user_payload_buf, NULL, NULL);