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

1 files changed, 6 insertions, 0 deletions

diff --git a/include/osmocom/gsm/gsm23003.h b/include/osmocom/gsm/gsm23003.h
index cf622ce0..88c4f3c2 100644
--- a/include/osmocom/gsm/gsm23003.h
+++ b/include/osmocom/gsm/gsm23003.h
@@ -105,13 +105,19 @@ bool osmo_msisdn_str_valid(const char *msisdn);
 bool osmo_imei_str_valid(const char *imei, bool with_15th_digit);
 
 const char *osmo_mcc_name(uint16_t mcc);
+char *osmo_mcc_name_buf(char *buf, size_t buf_len, uint16_t mcc);
 const char *osmo_mnc_name(uint16_t mnc, bool mnc_3_digits);
+char *osmo_mnc_name_buf(char *buf, size_t buf_len, uint16_t mnc, bool mnc_3_digits);
 const char *osmo_plmn_name(const struct osmo_plmn_id *plmn);
 const char *osmo_plmn_name2(const struct osmo_plmn_id *plmn);
+char *osmo_plmn_name_buf(char *buf, size_t buf_len, const struct osmo_plmn_id *plmn);
 const char *osmo_lai_name(const struct osmo_location_area_id *lai);
+char *osmo_lai_name_buf(char *buf, size_t buf_len, const struct osmo_location_area_id *lai);
 const char *osmo_cgi_name(const struct osmo_cell_global_id *cgi);
 const char *osmo_cgi_name2(const struct osmo_cell_global_id *cgi);
+char *osmo_cgi_name_buf(char *buf, size_t buf_len, const struct osmo_cell_global_id *cgi);
 const char *osmo_gummei_name(const struct osmo_gummei *gummei);
+char *osmo_gummei_name_buf(char *buf, size_t buf_len, const struct osmo_gummei *gummei);
 
 void osmo_plmn_to_bcd(uint8_t *bcd_dst, const struct osmo_plmn_id *plmn);
 void osmo_plmn_from_bcd(const uint8_t *bcd_src, struct osmo_plmn_id *plmn);