# Cable conf for NEFtv # (Nuernberg, Erlangen, Fuerth and Herzogenaurach (herzomedia)) # freq sr fec mod [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 113000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 346000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 354000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 362000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 370000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 378000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 386000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 394000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 402000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 410000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 418000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 426000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 434000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 442000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 450000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 458000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO # The following channel is only available in Herzogenaurach [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 466000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 474000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 490000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 498000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 514000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 522000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 546000000 SYMBOL_RATE = 6875000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 618000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 634000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 786000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 794000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 802000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 810000000 SYMBOL_RATE = 6900000 INNER_FEC = NONE MODULATION = QAM/64 INVERSION = AUTO id='n65' href='#n65'>65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 
/* $Id: pid.c,v 1.2 2003/10/05 17:58:50 reinelt Exp $
 *
 * PID file handling
 *
 * Copyright 1999, 2000 Michael Reinelt <reinelt@eunet.at>
 *
 * 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: pid.c,v $
 * Revision 1.2  2003/10/05 17:58:50  reinelt
 * libtool junk; copyright messages cleaned up
 *
 * Revision 1.1  2003/08/08 08:05:23  reinelt
 * added PID file handling
 *
 */

/* 
 * exported functions:
 * 
 * int pid_init (const char *pidfile)
 *   returns 0 if PID file could be successfully created
 *   returns PID of an already running process
 *   returns -1 in case of an error

 * int pid_exit (const char *pidfile)
 *   returns 0 if PID file could be successfully deleted
 *   otherwise returns error from unlink() call
 *
 */


#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "debug.h"
#include "pid.h"


int pid_init (const char *pidfile)
{
  char tmpfile[256];
  char buffer[16];
  int fd, len, pid;
  
  snprintf(tmpfile, sizeof(tmpfile), "%s.%s", pidfile, "XXXXXX");

  if ((fd=mkstemp(tmpfile))==-1) {
    error ("mkstemp(%s) failed: %s", tmpfile, strerror(errno));
    return -1;
  }
  
  if (fchmod(fd,S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH)==-1) {
    error ("fchmod(%s) failed: %s", tmpfile, strerror(errno));
    close(fd);
    unlink(tmpfile);
    return -1;
  }
  
  snprintf (buffer, sizeof(buffer), "%d\n", (int)getpid());
  if (write(fd, buffer, strlen(buffer))!=strlen(buffer)) {
    error ("write(%s) failed: %s", tmpfile, strerror(errno));
    close(fd);
    unlink(tmpfile);
    return -1;
  }
  close (fd);
  
  
  while (link(tmpfile, pidfile)==-1) {

    if (errno!=EEXIST) {
      error ("link(%s, %s) failed: %s", tmpfile, pidfile, strerror(errno));
      unlink(tmpfile);
      return -1;
    }

    if ((fd=open(pidfile, O_RDONLY))==-1) {
      if (errno==ENOENT) continue; // pidfile disappared
      error ("open(%s) failed: %s", pidfile, strerror(errno));
      unlink (tmpfile);
      return -1;
    }

    len=read(fd, buffer, sizeof(buffer)-1);
    if (len<0) {
      error ("read(%s) failed: %s", pidfile, strerror(errno));
      unlink (tmpfile);
      return -1;
    }
    
    buffer[len]='\0';
    if (sscanf(buffer, "%d", &pid)!=1 || pid==0) {
      error ("scan(%s) failed.", pidfile);
      unlink (tmpfile);
      return -1;
    }

    if (pid==getpid()) {
      error ("%s already locked by us. uh-oh...", pidfile);
      unlink(tmpfile);
      return 0;
    }
    
    if ((kill(pid, 0)==-1) && errno==ESRCH) {
      error ("removing stale PID file %s", pidfile);
      if (unlink(pidfile)==-1 && errno!=ENOENT) {
	error ("unlink(%s) failed: %s", pidfile, strerror(errno));
	unlink(tmpfile);
	return pid;
      }
      continue;
    }
    unlink (tmpfile);
    return pid;
  }
  
  unlink (tmpfile);
  return 0;
}


int pid_exit (const char *pidfile)
{
  return unlink(pidfile);
}