# UPC Česká republika | https://www.upc.cz/ # Created from http://www.upczone.cz/download/seznam_muxu.htm # Last updated: 15/10/2016 [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 554000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 562000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 570000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 578000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 586000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 602000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 610000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 618000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/256 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 626000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 634000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 642000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 650000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 658000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 666000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 674000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 682000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 690000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 698000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 706000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 714000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 722000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 730000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 738000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 746000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 754000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 762000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 770000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO [CHANNEL] DELIVERY_SYSTEM = DVBC/ANNEX_A FREQUENCY = 778000000 SYMBOL_RATE = 6900000 INNER_FEC = 3/5 MODULATION = QAM/64 INVERSION = AUTO '>51 52 53 54 55 56 57 58 59 60 61 62 63 64 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 
/* $Id: lock.c,v 1.2 2000/08/10 09:44:09 reinelt Exp $
 *
 * UUCP style locking
 *
 * Copyright 1999, 2000 by Michael Reinelt (reinelt@eunet.at)
 *
 * This program 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.
 *
 * This program 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: lock.c,v $
 * Revision 1.2  2000/08/10 09:44:09  reinelt
 *
 * new debugging scheme: error(), info(), debug()
 * uses syslog if in daemon mode
 *
 * Revision 1.1  2000/04/07 05:42:20  reinelt
 *
 * UUCP style lockfiles for the serial port
 *
 */

/* 
 * exported functions:
 * 
 * pid_t lock_port (char *port)
 *   returns 0 if port could be successfully locked
 *   otherwise returns PID of the process holding the lock
 *
 * pid_t unlock_port (char *port)
 *   returns 0 if port could be successfully unlocked
 *   otherwise returns PID of the process holding the lock
 *
 */


#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 "lock.h"


pid_t lock_port (char *port)
{
  char lockfile[256];
  char tempfile[256];
  char buffer[16];
  char *p;
  int fd, len, pid;

  if ((p=strrchr (port, '/'))==NULL) 
    p=port;
  else
    p++;
  
  snprintf(lockfile, sizeof(lockfile), LOCK, p);
  snprintf(tempfile, sizeof(tempfile), LOCK, "TMP.XXXXXX");

  if (mktemp(tempfile)==NULL) {
    error ("mktemp(%s) failed.", tempfile);
    return -1;
  }
  
  if ((fd=creat(tempfile, 0664))==-1) {
    error ("creat(%s) failed: %s", tempfile, strerror(errno));
    return -1;
  }
  
  snprintf (buffer, sizeof(buffer), "%10d\n", (int)getpid());
  if (write(fd, buffer, strlen(buffer))!=strlen(buffer)) {
    error ("write(%s) failed: %s", tempfile, strerror(errno));
    close(fd);
    unlink(tempfile);
    return -1;
  }
  close (fd);
  

  while (link(tempfile, lockfile)==-1) {

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

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

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

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


pid_t unlock_port (char *port)
{
  char lockfile[256];
  char *p;
  
  if ((p=strrchr (port, '/'))==NULL) 
    p=port;
  else
    p++;
  
  snprintf(lockfile, sizeof(lockfile), LOCK, p);
  unlink (lockfile);
  return 0;
}