Function _cups_debug_set

cups/debug.c:258–327

 */

void
_cups_debug_set(const char *logfile,	/* I - Log file or NULL */
                const char *level,	/* I - Log level or NULL */
		const char *filter,	/* I - Filter string or NULL */
		int        force)	/* I - Force initialization */
{
  _cupsMutexLock(&debug_init_mutex);

  if (!debug_init || force)
  {
   /*
    * Restore debug settings to defaults...
    */

    if (_cups_debug_fd != -1)
    {
      close(_cups_debug_fd);
      _cups_debug_fd = -1;
    }

    if (debug_filter)
    {
      regfree((regex_t *)debug_filter);
      debug_filter = NULL;
    }

    _cups_debug_level = 1;

   /*
    * Open logs, set log levels, etc.
    */

    if (!logfile)
      _cups_debug_fd = -1;
    else if (!strcmp(logfile, "-"))
      _cups_debug_fd = 2;
    else
    {
      char	buffer[1024];		/* Filename buffer */

      snprintf(buffer, sizeof(buffer), logfile, getpid());

      if (buffer[0] == '+')
	_cups_debug_fd = open(buffer + 1, O_WRONLY | O_APPEND | O_CREAT, 0644);
      else
	_cups_debug_fd = open(buffer, O_WRONLY | O_TRUNC | O_CREAT, 0644);
    }

    if (level)
      _cups_debug_level = atoi(level);

    if (filter)
    {
      if ((debug_filter = (regex_t *)calloc(1, sizeof(regex_t))) == NULL)
	fputs("Unable to allocate memory for CUPS_DEBUG_FILTER - results not "
	      "filtered!\n", stderr);
      else if (regcomp(debug_filter, filter, REG_EXTENDED))
      {