text: /* Id */
  
  /*
   * Copyright (c) 2009 Joshua Elsasser <josh@elsasser.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
   * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
   * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <sys/types.h>
  
  #include <event.h>
  #include <libproc.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  
  char			*osdep_get_name(int, char *);
  char			*osdep_get_cwd(int);
  struct event_base	*osdep_event_init(void);
  
  #define unused __attribute__ ((unused))
  
  char *
  osdep_get_name(int fd, unused char *tty)
  {
  	struct proc_bsdinfo		bsdinfo;
  	pid_t				pgrp;
  	int				ret;
  
  	if ((pgrp = tcgetpgrp(fd)) == -1)
  		return (NULL);
  
  	ret = proc_pidinfo(pgrp, PROC_PIDTBSDINFO, 0,
  	    &bsdinfo, sizeof bsdinfo);
  	if (ret == sizeof bsdinfo && *bsdinfo.pbi_comm != '\0')
  		return (strdup(bsdinfo.pbi_comm));
  	return (NULL);
  }
  
  char *
  osdep_get_cwd(int fd)
  {
  	static char			wd[PATH_MAX];
  	struct proc_vnodepathinfo	pathinfo;
  	pid_t				pgrp;
  	int				ret;
  
  	if ((pgrp = tcgetpgrp(fd)) == -1)
  		return (NULL);
  
  	ret = proc_pidinfo(pgrp, PROC_PIDVNODEPATHINFO, 0,
  	    &pathinfo, sizeof pathinfo);
  	if (ret == sizeof pathinfo) {
  		strlcpy(wd, pathinfo.pvi_cdir.vip_path, sizeof wd);
  		return (wd);
  	}
  	return (NULL);
  }
  
  struct event_base *
  osdep_event_init(void)
  {
  	/*
  	 * On OS X, kqueue and poll are both completely broken and don't
  	 * work on anything except socket file descriptors (yes, really).
  	 */
  	setenv("EVENT_NOKQUEUE", "1", 1);
  	setenv("EVENT_NOPOLL", "1", 1);
  	return (event_init());
  }
  