/* $Id: lcd4linux.c,v 1.70 2004/06/02 05:14:16 reinelt Exp $ * * LCD4Linux * * Copyright 1999-2004 Michael Reinelt * Copyright 2004 The LCD4Linux Team * * This file is part of LCD4Linux. * * LCD4Linux is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * LCD4Linux is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: lcd4linux.c,v $ * Revision 1.70 2004/06/02 05:14:16 reinelt * * fixed models listing for Beckmann+Egle driver * some cosmetic changes * * Revision 1.69 2004/03/14 07:11:42 reinelt * parameter count fixed for plugin_dvb() * plugin_APM (battery status) ported * * Revision 1.68 2004/03/11 06:39:59 reinelt * big patch from Martin: * - reuse filehandles * - memory leaks fixed * - earlier busy-flag checking with HD44780 * - reuse memory for strings in RESULT and hash * - netdev_fast to wavid time-consuming regex * * Revision 1.67 2004/03/06 20:31:16 reinelt * Complete rewrite of the evaluator to get rid of the code * from mark Morley (because of license issues). * The new Evaluator does a pre-compile of expressions, and * stores them in trees. Therefore it should be reasonable faster... * * Revision 1.66 2004/03/03 04:44:16 reinelt * changes (cosmetics?) to the big patch from Martin * hash patch un-applied * * Revision 1.65 2004/03/03 03:47:04 reinelt * big patch from Martin Hejl: * - use qprintf() where appropriate * - save CPU cycles on gettimeofday() * - add quit() functions to free allocated memory * - fixed lots of memory leaks * * Revision 1.64 2004/02/27 07:06:25 reinelt * new function 'qprintf()' (simple but quick snprintf() replacement) * * Revision 1.63 2004/02/10 07:42:35 reinelt * cut off all old-style files which are no longer used with NextGeneration * * Revision 1.62 2004/01/30 20:57:56 reinelt * HD44780 patch from Martin Hejl * dmalloc integrated * * Revision 1.61 2004/01/14 11:33:00 reinelt * new plugin 'uname' which does what it's called * text widget nearly finished * first results displayed on MatrixOrbital * * Revision 1.60 2004/01/13 08:18:19 reinelt * timer queues added * liblcd4linux deactivated turing transformation to new layout * * Revision 1.59 2004/01/12 03:51:01 reinelt * evaluating the 'Variables' section in the config file * * Revision 1.58 2004/01/10 20:

# Sweden - Bruzaholm
# T freq bw fec_hi fec_lo mod transmission-mode guard-interval hierarchy
T 658000000 8MHz 2/3 NONE QAM64 8k 1/8 NONE

pixmap.c that leaded to empty bars fixed * name conflicts with X11 resolved * * Revision 1.13 2000/03/26 12:55:03 reinelt * * enhancements to the PPM driver * * Revision 1.12 2000/03/25 05:50:43 reinelt * * memory leak in Raster_flush closed * driver family logic changed * * Revision 1.11 2000/03/24 11:36:56 reinelt * * new syntax for raster configuration * changed XRES and YRES to be configurable * PPM driver works nice * * Revision 1.10 2000/03/23 07:24:48 reinelt * * PPM driver up and running (but slow!) * * Revision 1.9 2000/03/22 15:36:21 reinelt * * added '-l' switch (list drivers) * generic pixmap driver added * X11 Framework done * * Revision 1.8 2000/03/22 07:33:50 reinelt * * FAQ added * new modules 'processor.c' contains all data processing * * Revision 1.7 2000/03/19 08:41:28 reinelt * * documentation available! README, README.MatrixOrbital, README.Drivers * added Skeleton.c as a starting point for new drivers * * Revision 1.6 2000/03/18 10:31:06 reinelt * * added sensor handling (for temperature etc.) * made data collecting happen only if data is used * (reading /proc/meminfo takes a lot of CPU!) * released lcd4linux-0.92 * * Revision 1.5 2000/03/18 08:07:04 reinelt * * vertical bars implemented * bar compaction improved * memory information implemented * * Revision 1.4 2000/03/17 09:21:42 reinelt * * various memory statistics added * * Revision 1.3 2000/03/13 15:58:24 reinelt * * release 0.9 * moved row parsing to parser.c * all basic work finished * * Revision 1.2 2000/03/10 17:36:02 reinelt * * first unstable but running release * */ #include "config.h" #include #include #include #include #include #include #include #include #include "cfg.h" #include "debug.h" #include "qprintf.h" #include "pid.h" #include "udelay.h" #include "drv.h" #include "timer.h" #include "layout.h" #include "plugin.h" #ifdef WITH_DMALLOC #include #endif #define PIDFILE "/var/run/lcd4linux.pid" static char *release = "LCD4Linux " VERSION; static char *copyright = "Copyright 1999-2004 The LCD4Linux Team "; static char **my_argv; static int got_signal=0; int tick, tack; extern char* output; static void usage(void) { printf ("%s\n", release); printf ("%s\n", copyright); printf ("usage: lcd4linux [-h]\n"); printf (" lcd4linux [-l]\n"); printf (" lcd4linux [-c key=value] [-i] [-f config-file] [-v]\n"); printf (" lcd4linux [-c key=value] [-F] [-f config-file] [-o output-file] [-q] [-v]\n"); } #if 0 // Fixme: how to hello() with new layout? int hello (void) { int i, x, y, flag; char *line1[] = { "* LCD4Linux " VERSION " *", "LCD4Linux " VERSION, "LCD4Linux", "L4Linux", NULL }; char *line2[] = { "(c) 2003 M.Reinelt", "(c) M.Reinelt", NULL }; lcd_query (&y, &x, NULL, NULL, NULL, NULL, NULL); flag=0; for (i=0; line1[i]; i++) { if (strlen(line1[i])<=x) { lcd_put (1, (x-strlen(line1[i]))/2+1, line1[i]); flag=1; break; } } for (i=0; line2[i]; i++) { if (strlen(line2[i])<=x) { lcd_put (2, (x-strlen(line2[i]))/2+1, line2[i]); flag=1; break; } } if (flag) lcd_flush(); return flag; } #endif static void interactive_mode (void) { char line[1024]; void *tree; RESULT result = {0, 0, 0, NULL}; printf("\neval> "); for(fgets(line, 1024, stdin); !feof(stdin); fgets(line, 1024, stdin)) { if (line[strlen(line)-1]=='\n') line[strlen(line)-1]='\0'; if (strlen(line)>0) { if (Compile(line, &tree)!=-1) { Eval (tree, &result); if (result.type==R_NUMBER) { printf ("%g\n", R2N(&result)); } else if (result.type==R_STRING) { printf ("'%s'\n", R2S(&result)); } DelResult (&result); } DelTree(tree); } printf("eval> "); } printf ("\n"); } void handler (int signal) { debug ("got signal %d", signal); got_signal=signal; } int main (int argc, char *argv[]) { char *cfg = "/etc/lcd4linux.conf"; char *display, *driver, *layout; char section[32]; int c; int quiet = 0; int interactive = 0; int pid; // save arguments for restart my_argv = malloc(sizeof(char*)*(argc+1)); for (c = 0; c < argc; c++) { my_argv[c] = strdup(argv[c]); } my_argv[c] = NULL; running_foreground = 0; running_background = 0; while ((c=getopt (argc, argv, "c:Ff:hilo:qv"))!=EOF) { switch (c) { case 'c': if (cfg_cmd (optarg)<0) { fprintf (stderr, "%s: illegal argument -c '%s'\n", argv[0], optarg); exit(2); } break; case 'F': running_foreground++; break; case 'f': cfg=optarg; break; case 'h': usage(); exit(0); case 'i': interactive++; break; case 'l': printf ("%s\n", release); printf ("%s\n", copyright); drv_list(); exit(0); case 'o': output=optarg; break; case 'q': quiet++; break; case 'v': verbose_level++; break; default: exit(2); } } if (optind < argc) { fprintf (stderr, "%s: illegal option %s\n", argv[0], argv[optind]); exit(2); } // do not fork in interactive mode if (interactive) { running_foreground=1; } info ("Version " VERSION " starting"); if (!running_foreground && (my_argv[0]==NULL || my_argv[0][0]!='/')) { info ("invoked without full path; restart may not work!"); } if (cfg_init(cfg)==-1) exit (1); if (plugin_init()==-1) exit (1); display=cfg_get(NULL, "Display", NULL); if (display==NULL || *display=='\0') { error ("missing 'Display' entry in %s!", cfg_source()); exit (1); } qprintf(section, sizeof(section), "Display:%s", display); free(display); driver=cfg_get(section, "Driver", NULL); if (driver==NULL || *driver=='\0') { error ("missing '%s.Driver' entry in %s!", section, cfg_source()); exit (1); } if (!running_foreground) { pid_t i; int fd; debug ("going background..."); i=fork(); if (i<0) { error ("fork() failed: %s", strerror(errno)); exit (1); } if (i!=0) exit (0); // ignore nasty signals signal(SIGINT, SIG_IGN); signal(SIGQUIT, SIG_IGN); // chdir("/") if (chdir("/")!=0) { error ("chdir(\"/\") failed: %s", strerror(errno)); exit (1); } // we want full control over permissions umask (0); // detach stdin if (freopen("/dev/null", "r", stdin)==NULL) { error ("freopen (/dev/null) failed: %s", strerror(errno)); exit (1); } // detach stdout and stderr fd=open("/dev/null", O_WRONLY, 0666); if (fd==-1) { error ("open (/dev/null) failed: %s", strerror(errno)); exit (1); } fflush(stdout); fflush(stderr); dup2(fd, STDOUT_FILENO); dup2(fd, STDERR_FILENO); close(fd); // create PID file if ((pid = pid_init(PIDFILE)) != 0) { error ("lcd4linux already running as process %d", pid) exit (1); } // now we are a daemon running_background=1; } // go into interactive mode before display initialization if (interactive >= 2) { interactive_mode(); pid_exit(PIDFILE); cfg_exit(); exit (0); } debug ("initializing driver %s", driver); if (drv_init(section, driver)==-1) { pid_exit(PIDFILE); exit (1); } free(driver); // check for new-style layout layout=cfg_get(NULL, "Layout", NULL); if (layout==NULL || *layout=='\0') { error ("missing 'Layout' entry in %s!", cfg_source()); exit (1); } layout_init(layout); free(layout); // go into interactive mode (display has been initialized) if (interactive >= 1) { interactive_mode(); drv_quit(); pid_exit(PIDFILE); cfg_exit(); exit (0); } // check the conf to see if quiet startup is wanted if (!quiet) { cfg_number(NULL, "Quiet", 0, 0, 1, &quiet); } #if 0 // Fixme: how to hello() with new layout? if (!quiet && hello()) { sleep (3); lcd_clear(1); } #endif debug ("starting main loop"); // now install our own signal handler signal(SIGHUP, handler); signal(SIGINT, handler); signal(SIGQUIT, handler); signal(SIGTERM, handler); while (got_signal==0) { struct timespec delay; if (timer_process(&delay)<0) break; nanosleep(&delay, NULL); } debug ("leaving main loop"); #if 0 // Fixme: how to hello() with new layout? lcd_clear(1); if (!quiet) hello(); #endif drv_quit(); pid_exit(PIDFILE); cfg_exit(); plugin_exit(); timer_exit(); if (got_signal==SIGHUP) { long fd; debug ("restarting..."); // close all files on exec for (fd=sysconf(_SC_OPEN_MAX); fd>2; fd--) { int flag; if ((flag=fcntl(fd,F_GETFD,0))!=-1) fcntl(fd,F_SETFD,flag|FD_CLOEXEC); } execv (my_argv[0], my_argv); error ("execv() failed: %s", strerror(errno)); exit(1); } for(c=0;my_argv[c]!=NULL;c++) { free(my_argv[c]); } free(my_argv); exit (0); }