FreeCalypso > hg > themwi-system-sw
annotate mncc/mncc_sock.c @ 22:7a9eb3df14e6
top Makefile: add mtctest
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 28 Jun 2022 18:27:44 -0800 |
parents | ccc5ab6d8388 |
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rev | line source |
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1 /* |
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2 * In this module we implement low-level handling |
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3 * of the main MNCC socket that connects to OsmoMSC. |
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4 */ |
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5 |
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6 #include <sys/types.h> |
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7 #include <sys/socket.h> |
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8 #include <sys/un.h> |
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9 #include <stdio.h> |
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10 #include <stdint.h> |
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11 #include <stdlib.h> |
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12 #include <syslog.h> |
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13 #include "../include/mncc.h" |
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14 |
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15 static char mncc_socket_pathname[] = "/var/gsm/mncc_socket"; |
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16 |
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17 int mncc_socket; |
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18 |
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19 open_mncc_socket() |
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20 { |
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21 struct sockaddr_un sa; |
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22 unsigned sa_len; |
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23 int rc; |
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24 |
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25 mncc_socket = socket(AF_UNIX, SOCK_SEQPACKET, 0); |
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26 if (mncc_socket < 0) { |
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27 syslog(LOG_CRIT, "socket(AF_UNIX, SOCK_SEQPACKET, 0): %m"); |
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28 return(-1); |
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29 } |
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30 fill_sockaddr_un(mncc_socket_pathname, &sa, &sa_len); |
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31 rc = connect(mncc_socket, (struct sockaddr *) &sa, sa_len); |
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32 if (rc < 0) { |
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33 syslog(LOG_ERR, "connect to %s: %m", mncc_socket_pathname); |
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34 return(-1); |
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35 } |
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36 update_max_fd(mncc_socket); |
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37 return(0); |
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38 } |
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39 |
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40 void |
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41 mncc_socket_select() |
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42 { |
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43 union mncc_msg msg; |
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44 int rc; |
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45 |
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46 rc = recv(mncc_socket, &msg, sizeof msg, 0); |
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47 if (rc < 0) { |
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48 syslog(LOG_CRIT, "error reading from MNCC socket: %m"); |
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49 exit(1); |
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50 } |
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51 if (rc < 4) { |
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52 syslog(LOG_CRIT, "short read from MNCC socket: %d bytes", rc); |
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53 exit(1); |
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54 } |
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55 mncc_msg_from_gsm(&msg, rc); |
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56 } |
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57 |
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58 send_mncc_to_gsm(msg, msglen) |
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59 union mncc_msg *msg; |
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60 unsigned msglen; |
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61 { |
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62 return send(mncc_socket, msg, msglen, 0); |
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63 } |