FreeCalypso > hg > freecalypso-tools

annotate rvinterf/etmsync/fsnew.c @ 344:e0260c2982b6

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fcup-atinterf: brown paper bag
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 04 Feb 2018 08:23:54 +0000
parents 0cb766828d7a
children 003e48f8ebe1
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0cb766828d7a fc-fsio: implemented write-battery-table and write-charging-config commands
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1 /*
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2 * In this module we are going to implement the commands that upload
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3 * new FreeCalypso-invented stuff into the FFS of our FC devices.
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4 */
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5
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6 #include <sys/wait.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9 #include <unistd.h>
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10 #include "exitcodes.h"
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11
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12 char batterytab_compile_tool[] = "/opt/freecalypso/bin/compile-fc-batt";
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13 char charging_compile_tool[] = "/opt/freecalypso/bin/compile-fc-chg";
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14
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15 upload_fc_table_from_ascii(asciisrc, compiletool, ffs_pathname)
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16 char *asciisrc, *compiletool, *ffs_pathname;
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17 {
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18 char tmpfile[] = "/tmp/fc-fsioXXXXXX";
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19 int tmpfd;
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20 pid_t child, waitres;
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21 int status, rc;
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22
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23 tmpfd = mkstemp(tmpfile);
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24 if (tmpfd < 0) {
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25 fprintf(stderr, "unable to get temp file via mkstemp()\n");
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26 return(ERROR_UNIX);
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27 }
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28 close(tmpfd);
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29 child = vfork();
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30 if (child < 0) {
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31 fprintf(stderr, "unable to vfork to run compiler tool\n");
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32 unlink(tmpfile);
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33 return(ERROR_UNIX);
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34 }
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35 if (!child) {
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36 execl(compiletool, compiletool, asciisrc, tmpfile, 0);
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37 perror(compiletool);
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38 _exit(ERROR_UNIX);
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39 }
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40 waitres = waitpid(child, &status, 0);
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41 if (waitres != child || !WIFEXITED(status)) {
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42 fprintf(stderr, "unexpected wait result after compiler run\n");
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43 unlink(tmpfile);
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44 return(ERROR_UNIX);
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45 }
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46 rc = WEXITSTATUS(status);
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47 if (rc) {
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48 unlink(tmpfile);
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49 return rc;
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50 }
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51 rc = fwrite_from_file(ffs_pathname, tmpfile);
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52 unlink(tmpfile);
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53 return rc;
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54 }
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55
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56 cmd_write_battery_table(argc, argv)
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57 char **argv;
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58 {
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59 return upload_fc_table_from_ascii(argv[1], batterytab_compile_tool,
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60 "/etc/batterytab");
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61 }
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62
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63 cmd_write_charging_config(argc, argv)
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64 char **argv;
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65 {
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66 return upload_fc_table_from_ascii(argv[1], charging_compile_tool,
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67 "/etc/charging");
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68 }