Add _c versions of functions that otherwise return static buffers

We have a habit of returning static buffers from some functions,
particularly when generating some kind of string values.  This is
convenient in terms of memory management, but it comes at the expense
of not being thread-safe, and not allowing for two calls of the
related function within one printf() statement.

Let's introduce _c suffix versions of those functions where the
caller passes in a talloc context from which the output buffer shall
be allocated.

Change-Id: I8481c19b68ff67cfa22abb93c405ebcfcb0ab19b

1 files changed, 1 insertions, 0 deletions

diff --git a/include/osmocom/gprs/gprs_ns.h b/include/osmocom/gprs/gprs_ns.h
index ed155ffe..02faa506 100644
--- a/include/osmocom/gprs/gprs_ns.h
+++ b/include/osmocom/gprs/gprs_ns.h
@@ -213,6 +213,7 @@ int gprs_ns_vty_init(struct gprs_ns_inst *nsi);
 const char *gprs_ns_ll_str(const struct gprs_nsvc *nsvc);
 /* Return peer info in user-supplied buffer */
 char *gprs_ns_ll_str_buf(char *buf, size_t buf_len, const struct gprs_nsvc *nsvc);
+char *gprs_ns_ll_str_c(const void *ctx, const struct gprs_nsvc *nsvc);
 
 /* Copy the link layer info from other into nsvc */
 void gprs_ns_ll_copy(struct gprs_nsvc *nsvc, struct gprs_nsvc *other);