text: /*
   * Copyright (c) 2011 Roman Tokarev <roman.s.tokarev@gmail.com>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *        notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *        notice, this list of conditions and the following disclaimer in the
   *        documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the author nor the names of any co-contributors
   *        may be used to endorse or promote products derived from this software
   *        without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY CONTRIBUTORS ``AS IS'' AND ANY EXPRESS
   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
   * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
   * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <debug.h>
  
  #include <config.h>
  
  #include <fcntl.h>
  #include <string.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <unistd.h>
  
  
  static int debug_fd = -1;
  
  
  void debug_init(void)
  {
  	if (config.input) {
  		debug_fd = open(config.input, O_RDWR);
  		if (debug_fd == -1)
  			say_error("debug_init: can't open `%s': %m", config.input);
  	}
  }
  
  int debug_write(const char *data)
  {
  	if (debug_fd == -1)
  		return -1;
  
  	size_t len = strlen(data);
  	ssize_t r = write(debug_fd, data, len);
  
  	if (r == -1) {
  		say_error("debug_write: can't write: %m");
  
  		return -1;
  	}
  
  	if (r != (ssize_t)len) {
  		say_error("debug_write: some data hasn't been written");
  
  		return -1;
  	}
  
  	return 0;
  }
  