FreeCalypso > hg > freecalypso-tools

annotate rvinterf/old/before-rvinterf/openport.c @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents e7502631a0f9
children
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1 /*
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2 * This module takes care of opening the serial port and setting the
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3 * proper "raw" termios modes, including the baud rate.
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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/file.h>
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8 #include <sys/ioctl.h>
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9 #include <termios.h>
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include <unistd.h>
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15
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16 int target_fd;
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17 char *baudrate_name = "115200";
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18
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19 static struct baudrate {
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20 char *name;
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21 speed_t termios_code;
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22 } baud_rate_table[] = {
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23 {"19200", B19200},
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24 {"38400", B38400},
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25 {"57600", B57600},
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26 {"115200", B115200},
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27 /* non-standard high baud rates "remapped" by CP2102 usb2serial IC */
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28 {"203125", B230400},
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29 {"406250", B460800},
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30 {"812500", B921600},
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31 /* table search terminator */
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32 {NULL, B0}
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33 };
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34
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35 static speed_t
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36 get_baud_rate()
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37 {
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38 struct baudrate *br;
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39
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40 for (br = baud_rate_table; br->name; br++)
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41 if (!strcmp(br->name, baudrate_name))
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42 break;
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43 if (!br->name) {
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44 fprintf(stderr, "baud rate \"%s\" unknown/unsupported\n",
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45 baudrate_name);
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46 exit(1);
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47 }
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48 return br->termios_code;
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49 }
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50
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51 open_target_serial(ttydev)
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52 char *ttydev;
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53 {
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54 struct termios target_termios;
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55 speed_t br_code;
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56
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57 br_code = get_baud_rate();
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58 target_fd = open(ttydev, O_RDWR|O_NONBLOCK);
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59 if (target_fd < 0) {
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60 perror(ttydev);
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61 exit(1);
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62 }
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63 target_termios.c_iflag = IGNBRK;
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64 target_termios.c_oflag = 0;
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65 target_termios.c_cflag = CLOCAL|HUPCL|CREAD|CS8;
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66 target_termios.c_lflag = 0;
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67 target_termios.c_cc[VMIN] = 1;
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68 target_termios.c_cc[VTIME] = 0;
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69 cfsetispeed(&target_termios, br_code);
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70 cfsetospeed(&target_termios, br_code);
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71 if (tcsetattr(target_fd, TCSAFLUSH, &target_termios) < 0) {
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72 perror("initial tcsetattr on target");
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73 exit(1);
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74 }
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75 return 0;
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76 }
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77
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78 set_serial_nonblock(state)
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79 int state;
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80 {
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81 ioctl(target_fd, FIONBIO, &state);
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82 }