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/sim/sim.h b/include/osmocom/sim/sim.h
index 0490dcd4..2bc47153 100644
--- a/include/osmocom/sim/sim.h
+++ b/include/osmocom/sim/sim.h
@@ -298,6 +298,7 @@ enum osim_card_sw_class osim_sw_class(const struct osim_card_profile *cp,
 struct osim_card_hdl;
 char *osim_print_sw_buf(char *buf, size_t buf_len, const struct osim_card_hdl *ch, uint16_t sw_in);
 char *osim_print_sw(const struct osim_card_hdl *ch, uint16_t sw_in);
+char *osim_print_sw_c(const void *ctx, const struct osim_card_hdl *ch, uint16_t sw_in);
 
 extern const struct tlv_definition ts102221_fcp_tlv_def;
 extern const struct value_string ts102221_fcp_vals[14];