cbsp: Introduce osmo_cbsp_errstr
Rather than having the encoder/decoder library print some log
messages in case of encoding/decoding errors, let's provide something
akin to 'errno', but with a string instead of a numeric error code.
The 'osmo_cbsp_errstr' global variable (if set) contains a
human-readable string describing the most recent encoding/decoding error.
It exists separately for each thread and hence can be used safely in
multi-threaded environments.
Change-Id: Id9a5a595a76ba278647aee9470ded213d8464103
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index eefcf61..ea1f759 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -656,6 +656,7 @@
osmo_cbsp_encode;
osmo_cbsp_decode;
osmo_cbsp_recv_buffered;
+osmo_cbsp_errstr;
local: *;
};