FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/fsnew.c @ 719:f33d050eac6e
INSTALL: libserial-linux change
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 23 Aug 2020 15:42:45 +0000 |
parents | 003e48f8ebe1 |
children | 2cd5ac909e23 |
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/* * In this module we are going to implement the commands that upload * new FreeCalypso-invented stuff into the FFS of our FC devices. */ #include <sys/wait.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "exitcodes.h" char batterytab_compile_tool[] = "/opt/freecalypso/bin/compile-fc-batt"; char charging_compile_tool[] = "/opt/freecalypso/bin/compile-fc-chg"; upload_fc_table_from_ascii(asciisrc, compiletool, ffs_pathname) char *asciisrc, *compiletool, *ffs_pathname; { char tmpfile[] = "/tmp/fc-fsioXXXXXX"; int tmpfd; pid_t child, waitres; int status, rc; tmpfd = mkstemp(tmpfile); if (tmpfd < 0) { fprintf(stderr, "unable to get temp file via mkstemp()\n"); return(ERROR_UNIX); } close(tmpfd); child = vfork(); if (child < 0) { fprintf(stderr, "unable to vfork to run compiler tool\n"); unlink(tmpfile); return(ERROR_UNIX); } if (!child) { execl(compiletool, compiletool, asciisrc, tmpfile, (char *) 0); perror(compiletool); _exit(ERROR_UNIX); } waitres = waitpid(child, &status, 0); if (waitres != child || !WIFEXITED(status)) { fprintf(stderr, "unexpected wait result after compiler run\n"); unlink(tmpfile); return(ERROR_UNIX); } rc = WEXITSTATUS(status); if (rc) { unlink(tmpfile); return rc; } rc = fwrite_from_file(ffs_pathname, tmpfile); unlink(tmpfile); return rc; } cmd_write_battery_table(argc, argv) char **argv; { return upload_fc_table_from_ascii(argv[1], batterytab_compile_tool, "/etc/batterytab"); } cmd_write_charging_config(argc, argv) char **argv; { return upload_fc_table_from_ascii(argv[1], charging_compile_tool, "/etc/charging"); }