Add _buf() functions to bypass static string buffers
We have a number of static buffers in use in libosmo*. This means
the related functions are not usable in a thread-safe way. While
we so far don't have many multi-threaded programs in the osmocom
universe, the static buffers also prevent us from calling the same
e.g. string-ify function twice within a single printf() call.
Let's make sure there's an alternative function in all those cases,
where the user can pass in a caller-allocated buffer + size, and make
the 'classic' function with the static buffer a wrapper around that
_buf() variant.
Change-Id: Ibf85f79e93244f53b2684ff6f1095c5b41203e05
diff --git a/include/osmocom/gprs/gprs_ns.h b/include/osmocom/gprs/gprs_ns.h
index c62ef98..ed155ff 100644
--- a/include/osmocom/gprs/gprs_ns.h
+++ b/include/osmocom/gprs/gprs_ns.h
@@ -211,6 +211,8 @@
/* Resturn peer info as string (NOTE: the buffer is allocated statically) */
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);
/* Copy the link layer info from other into nsvc */
void gprs_ns_ll_copy(struct gprs_nsvc *nsvc, struct gprs_nsvc *other);