subscr_name(): Handle case for subscr == NULL
subscr_name() was called from several places: * either without a check for subscr being NULL, which for example was causing a segfault if we hand-over a channel before identifying the subscriber * or with an explicit NULL check and the ternary operator (?). We now simplify the code by checking for the NULL Subscriber in subscr_name() itself. Change-Id: Ide09f4a515222eb2ec6c25e7a6a8c5f6cc2ffd4b Reviewed-on: https://gerrit.osmocom.org/92 Tested-by: Jenkins Builder Reviewed-by: Holger Freyther <holger@freyther.de>
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@ -1051,7 +1051,7 @@ static void print_meas_rep(struct gsm_lchan *lchan, struct gsm_meas_rep *mr)
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int i;
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char *name = "";
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if (lchan && lchan->conn && lchan->conn->subscr)
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if (lchan && lchan->conn)
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name = subscr_name(lchan->conn->subscr);
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DEBUGP(DMEAS, "[%s] MEASUREMENT RESULT NR=%d ", name, mr->nr);
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@ -43,6 +43,9 @@ struct llist_head *subscr_bsc_active_subscribers(void)
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char *subscr_name(struct gsm_subscriber *subscr)
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{
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if (!subscr)
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return "unknown";
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if (strlen(subscr->name))
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return subscr->name;
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@ -447,8 +447,7 @@ int gsm0408_loc_upd_rej(struct gsm_subscriber_connection *conn, uint8_t cause)
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msg->lchan = conn->lchan;
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LOGP(DMM, LOGL_INFO, "Subscriber %s: LOCATION UPDATING REJECT "
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"LAC=%u BTS=%u\n", conn->subscr ?
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subscr_name(conn->subscr) : "unknown",
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"LAC=%u BTS=%u\n", subscr_name(conn->subscr),
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bts->location_area_code, bts->nr);
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return gsm48_conn_sendmsg(msg, conn, NULL);
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@ -1153,9 +1152,7 @@ static int gsm0408_rcv_mm(struct gsm_subscriber_connection *conn, struct msgb *m
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break;
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case GSM48_MT_MM_TMSI_REALL_COMPL:
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DEBUGP(DMM, "TMSI Reallocation Completed. Subscriber: %s\n",
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conn->subscr ?
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subscr_name(conn->subscr) :
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"unknown subscriber");
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subscr_name(conn->subscr));
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release_loc_updating_req(conn, 1);
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break;
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case GSM48_MT_MM_IMSI_DETACH_IND:
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