/*
** unix.h
*/

/*@-nextlinemacros@*/

/*
** sys/types.h
**
** evans - 2001-08-27: from http://www.opengroup.org/onlinepubs/007908799/xsh/systypes.h.html
*/

typedef /*@integraltype@*/ blkcnt_t;
typedef /*@integraltype@*/ blksize_t;
typedef /*@integraltype@*/ clock_t;
typedef /*@integraltype@*/ clockid_t;
typedef /*@integraltype@*/ dev_t;
typedef /*@unsignedintegraltype@*/ fsblkcnt_t;
typedef /*@unsignedintegraltype@*/ fsfilcnt_t;
typedef /*@integraltype@*/ gid_t;
typedef /*@integraltype@*/ id_t;
typedef /*@unsignedintegraltype@*/ ino_t;
typedef /*@integraltype@*/ key_t;
typedef /*@integraltype@*/ mode_t;
typedef /*@integraltype@*/ nlink_t;
typedef /*@integraltype@*/ off_t;
typedef /*@integraltype@*/ pid_t;
typedef /*@integraltype@*/ pthread_attr_t;
typedef /*@integraltype@*/ pthread_cond_t;
typedef /*@integraltype@*/ pthread_condattr_t;
typedef /*@integraltype@*/ pthread_key_t;
typedef /*@integraltype@*/ pthread_mutex_t;
typedef /*@integraltype@*/ pthread_mutexattr_t;
typedef /*@integraltype@*/ pthread_once_t;
typedef /*@integraltype@*/ pthread_rwlock_t;
typedef /*@integraltype@*/ pthread_rwlockattr_t;
typedef /*@integraltype@*/ pthread_t;
typedef /*@signedintegraltype@*/ suseconds_t;
typedef /*@integraltype@*/ time_t;
typedef /*@integraltype@*/ timer_t;
typedef /*@integraltype@*/ uid_t;
typedef /*@unsignedintegraltype@*/ useconds_t;

   /*-------------------------------------------------------------
     -------------------------------------------------------------
   */

   
/*
** Extra stuff in some unixen, not in posix.
*/

/*@unchecked@*/ int signgam;

typedef /*@integraltype@*/ clockid_t;

extern void bcopy (char *b1, /*@out@*/ char *b2, int length) 
   /*@modifies *b2@*/ ;  /* Yes, the second parameter is the out param! */

extern int /*@alt lltX_bool@*/ bcmp (char *b1, char *b2, int length) /*@*/ ;
   /* Return value is NOT like strcmp! */

extern void bzero (/*@out@*/ char *b1, int length) /*@modifies *b1@*/ ;
extern int ffs (int i) /*@*/ ;
extern int symlink (char *name1, char *name2) /*@modifies fileSystem@*/ ;

extern int 
  setvbuf_unlocked (FILE *stream, /*@null@*/ /*@exposed@*/ char *buf, 
		    int mode, size_t size)
  /*@modifies internalState@*/ ;

extern void 
  setbuffer (FILE *stream, /*@null@*/ /*@exposed@*/ char *buf, int size)
  /*@modifies internalState@*/ ;

extern void setlinebuf (FILE *stream) /*@modifies internalState@*/ ;

extern int strerror_r (int errnum, /*@out@*/ char *strerrbuf, int buflen)
  /*@modifies strerrbuf@*/ ;

extern size_t 
  fread_unlocked (/*@out@*/ void *ptr, size_t size, size_t nitems, 
		  FILE *stream) 
  /*@modifies *stream, *ptr;@*/ ;

extern size_t 
  fwrite_unlocked (void *pointer, size_t size, size_t num_items, FILE *stream)
  /*@modifies *stream;@*/ ;

extern void /*@alt void * @*/ 
  memccpy (/*@returned@*/ /*@out@*/ void *s1, 
	   /*@unique@*/ void *s2, int c, size_t n) 
  /*@modifies *s1@*/ ;

extern int strcasecmp (char *s1, char *s2) /*@*/ ;
extern int strncasecmp (char *s1, char *s2, int n) /*@*/ ;
extern /*@null@*/ /*@only@*/ char *strdup (char *s) /*@*/ ;

extern /*@null@*/ /*@dependent@*/ char *
  index (/*@returned@*/ char *s, char c) /*@*/ ;

extern /*@null@*/ /*@dependent@*/ char *
  rindex (/*@returned@*/ char *s, char c) /*@*/ ;


extern double cbrt (double x) /*@modifies errno@*/ ;
extern double rint (double x) /*@*/ ;
extern double trunc (double x) /*@*/ ; 

/*@constant int ENOTBLK@*/
/*@constant int ETXTBSY@*/
/*@constant int EWOULDBLOCK@*/
/*@constant int EINPROGRESS@*/
/*@constant int EALREADY@*/
/*@constant int ENOTSOCK@*/
/*@constant int EDESTADDRREQ@*/
/*@constant int EMSGSIZE@*/
/*@constant int EPROTOTYPE@*/
/*@constant int ENOPROTOOPT@*/
/*@constant int EPROTONOSUPPORT@*/
/*@constant int ESOCKTNOSUPPORT@*/
/*@constant int EOPNOTSUPP@*/
/*@constant int EPFNOSUPPORT@*/
/*@constant int EAFNOSUPPORT@*/
/*@constant int EADDRINUSE@*/
/*@constant int EADDRNOTAVAIL@*/
/*@constant int ENETDOWN@*/
/*@constant int ENETUNREACH@*/
/*@constant int ENETRESET@*/
/*@constant int ECONNABORTED@*/
/*@constant int ECONNRESET@*/
/*@constant int ENOBUFS@*/
/*@constant int EISCONN@*/
/*@constant int ENOTCONN@*/
/*@constant int ESHUTDOWN@*/
/*@constant int ETOOMANYREFS@*/
/*@constant int ETIMEDOUT@*/
/*@constant int ECONNREFUSED@*/
/*@constant int ENAMETOOLONG@*/
/*@constant int EHOSTDOWN@*/
/*@constant int EHOSTUNREACH@*/
/*@constant int ENOTEMPTY@*/
/*@constant int EPROCLIM@*/
/*@constant int EUSERS@*/
/*@constant int EDQUOT@*/
/*@constant int ESTALE@*/
/*@constant int EREMOTE@*/
/*@constant int ENOMSG@*/
/*@constant int EIDRM@*/
/*@constant int EALIGN@*/
/*@constant int EDEADLK@*/
/*@constant int ENOLCK@*/
/*@constant int ENOSYS@*/
/*@constant int EACTIVE@*/
/*@constant int ENOACTIVE@*/
/*@constant int ENORESOURCES@*/
/*@constant int ENOSYSTEM@*/
/*@constant int ENODUST@*/
/*@constant int EDUPNOCONN@*/
/*@constant int EDUPNODISCONN@*/
/*@constant int EDUPNOTCNTD@*/
/*@constant int EDUPNOTIDLE@*/
/*@constant int EDUPNOTWAIT@*/
/*@constant int EDUPNOTRUN@*/
/*@constant int EDUPBADOPCODE@*/
/*@constant int EDUPINTRANSIT@*/
/*@constant int EDUPTOOMANYCPUS@*/
/*@constant int ELOOP@*/

/*@constant int LOCK_MAX@*/
/*@constant int FCHR_MAX@*/
/*@constant int USI_MAX@*/
/*@constant int WORD_BIT@*/
/*@constant int LONG_BIT@*/
/*@constant long NAME_MAX@*/
/*@constant long NGROUPS_MAX@*/
/*@constant long MAX_INPUT@*/
/*@constant long MAX_CANON@*/
/*@constant int MAX_CHAR@*/
/*@constant long OPEN_MAX@*/
/*@constant int PASS_MAX@*/
/*@constant int PATH_MAX@*/
/*@constant int PID_MAX@*/
/*@constant int SYSPID_MAX@*/
/*@constant long PIPE_BUF@*/
/*@constant int PIPE_MAX@*/
/*@constant int PROC_MAX@*/
/*@constant int STD_BLK@*/
/*@constant int SYS_NMLN@*/
/*@constant int SYS_OPEN@*/
/*@constant int NZERO@*/
/*@constant int UID_MAX@*/
/*@constant long MB_LEN_MAX@*/
/*@constant int NL_ARGMAX@*/
/*@constant int NL_MSGMAX@*/
/*@constant int NL_NMAX@*/
/*@constant int NL_SETMAX@*/
/*@constant int NL_TEXTMAX@*/
/*@constant int NL_LBLMAX@*/
/*@constant int NL_LANGMAX @*/

/*@constant double M_E@*/
/*@constant double M_LOG2E@*/
/*@constant double M_LOG10E@*/
/*@constant double M_LN2@*/
/*@constant double M_LN10@*/
/*@constant double M_PI@*/
/*@constant double M_PI_2@*/
/*@constant double M_PI_4@*/
/*@constant double M_1_PI@*/
/*@constant double M_2_PI@*/
/*@constant double M_2_SQRTPI@*/
/*@constant double M_SQRT2@*/
/*@constant double M_SQRT1_2@*/ 

/*@constant double MAXFLOAT@*/
/*@constant double HUGE@*/
 
/*@constant int DOMAIN@*/
/*@constant int SING@*/
/*@constant int OVERFLOW@*/
/*@constant int UNDERFLOW@*/
/*@constant int TLOSS@*/
/*@constant int PLOSS@*/

extern /*@unchecked@*/ int daylight;
extern /*@unchecked@*/ long timezone;
extern /*@unchecked@*/ char *tzname[];

/*@-incondefs@*/
extern void tzset(void) /*@modifies daylight, timezone, tzname@*/ ;
/*@=incondefs@*/

typedef	unsigned char uchar_t;
typedef	unsigned short ushort_t;
typedef	unsigned int uint_t;
typedef unsigned long ulong_t;
typedef	volatile unsigned char vuchar_t;
typedef	volatile unsigned short	vushort_t;
typedef	volatile unsigned int vuint_t;
typedef volatile unsigned long vulong_t;
typedef long label_t;
typedef int level_t;
typedef	/*@integraltype@*/ daddr_t;
typedef	char *caddr_t;	
typedef long *qaddr_t; 
typedef char *addr_t;
typedef long physadr_t;
typedef short cnt_t;
typedef	int chan_t;	
typedef unsigned long rlim_t;
typedef	int paddr_t;
typedef /*@integraltype@*/ key_t;
typedef	void *mid_t;
typedef char slab_t[12];	
typedef ulong_t	shmatt_t;	
typedef ulong_t	msgqnum_t;	
typedef ulong_t	msglen_t;
typedef long timer_t;
typedef	uchar_t uchar;
typedef	ushort_t ushort;
typedef	uint_t uint;
typedef ulong_t	ulong;
typedef	uchar_t	u_char;
typedef	ushort_t u_short;
typedef	uint_t u_int;
typedef	ulong_t	u_long;
typedef	vuchar_t vu_char;
typedef	vushort_t vu_short;
typedef	vuint_t	vu_int;
typedef	vulong_t vu_long;
typedef	long swblk_t;
typedef u_long fixpt_t;
typedef long segsz_t;
typedef /*@abstract@*/ fd_set;

int ttyname_r (int fg, /*@out@*/ char *buffer, int len) /*@modifies buffer@*/ ;
int ioctl (int d, int /*@alt long@*/ request, /*@out@*/ void *arg) 
   /*@modifies *arg, errno@*/ ;  /* depends on request! */

pid_t vfork (void) /*@modifies fileSystem@*/ ;


struct iovec {
  void    *iov_base;
  size_t   iov_len;
};

/*@constant int UIO_MAXIOV@*/   /* BSD */
/*@constant int IOV_MAX@*/      /* supposedly SVR4 */

	extern ssize_t
readv (int fd, const struct iovec iov[], int iovcnt)
	/*@modifies iov[].iov_base, fileSystem, errno@*/;

	extern ssize_t
writev (int fd, const struct iovec iov[], int iovcnt)
	/*@modifies errno@*/;

/*________________________________________________________________________
 * poll.h
 */

 struct poll {
	int fd;
	short events;
	short revents;
};

/*@constant short POLLIN@*/
/*@constant short POLLRDNORM@*/
/*@constant short POLLRDBAND@*/
/*@constant short POLLPRI@*/
/*@constant short POLLOUT@*/
/*@constant short POLLWRNORM@*/
/*@constant short POLLWRBAND@*/
/*@constant short POLLERR@*/
/*@constant short POLLHUP@*/
/*@constant short POLLNVAL@*/

extern int poll (struct poll pollfd[], unsigned long nfds, int timeout)
  /*@modifies pollfd[].revents, errno@*/ ;

/*
** free does not take null
*/

/*@-incondefs@*/
extern void free (/*@notnull@*/ /*@out@*/ /*@only@*/ void *p) /*@modifies *p@*/ ;
/*@=incondefs@*/

/*________________________________________________________________________
 * sys/socket.h
 */

/*@constant int SOCK_STREAM@*/
/*@constant int SOCK_DGRAM@*/
/*@constant int SOCK_RAW@*/
/*@constant int SOCK_RDM@*/
/*@constant int SOCK_SEQPACKET@*/
/*@constant int SO_DEBUG@*/
/*@constant int SO_ACCEPTCONN@*/
/*@constant int SO_REUSEADDR@*/
/*@constant int SO_KEEPALIVE@*/
/*@constant int SO_DONTROUTE@*/
/*@constant int SO_BROADCAST@*/
/*@constant int SO_USELOOPBACK@*/
/*@constant int SO_LINGER@*/
/*@constant int SO_OOBINLINE@*/
/*@constant int SO_REUSEPORT@*/
/*@constant int SO_SNDBUF@*/
/*@constant int SO_RCVBUF@*/
/*@constant int SO_SNDLOWAT@*/
/*@constant int SO_RCVLOWAT@*/
/*@constant int SO_SNDTIMEO@*/
/*@constant int SO_RCVTIMEO@*/
/*@constant int SO_ERROR@*/
/*@constant int SO_TYPE@*/
/*@constant int SOL_SOCKET@*/
/*@constant int AF_UNSPEC@*/
/*@constant int AF_LOCAL@*/
/*@constant int AF_UNIX@*/
/*@constant int AF_INET@*/
/*@constant int AF_IMPLINK@*/
/*@constant int AF_PUP@*/
/*@constant int AF_CHAOS@*/
/*@constant int AF_NS@*/
/*@constant int AF_ISO@*/
/*@constant int AF_OSI@*/
/*@constant int AF_ECMA@*/
/*@constant int AF_DATAKIT@*/
/*@constant int AF_CCITT@*/
/*@constant int AF_SNA@*/
/*@constant int AF_DECnet@*/
/*@constant int AF_DLI@*/
/*@constant int AF_LAT@*/
/*@constant int AF_HYLINK@*/
/*@constant int AF_APPLETALK@*/
/*@constant int AF_ROUTE@*/
/*@constant int AF_LINK@*/
/*@constant int pseudo_AF_XTP@*/
/*@constant int AF_COIP@*/
/*@constant int AF_CNT@*/
/*@constant int pseudo_AF_RTIP@*/
/*@constant int AF_IPX@*/
/*@constant int AF_SIP@*/
/*@constant int pseudo_AF_PIP@*/
/*@constant int AF_ISDN@*/
/*@constant int AF_E164@*/
/*@constant int AF_MAX@*/
/*@constant int MSG_OOB@*/
/*@constant int MSG_PEEK@*/
/*@constant int MSG_DONTROUTE@*/
/*@constant int MSG_EOR@*/
/*@constant int MSG_TRUNC@*/
/*@constant int MSG_CTRUNC@*/
/*@constant int MSG_WAITALL@*/
/*@constant int MSG_DONTWAIT@*/
/*@constant int MSG_EOF@*/
/*@constant int MSG_COMPAT@*/
/*@constant int PF_UNSPEC@*/
/*@constant int PF_LOCAL@*/
/*@constant int PF_UNIX@*/
/*@constant int PF_INET@*/
/*@constant int PF_IMPLINK@*/
/*@constant int PF_PUP@*/
/*@constant int PF_CHAOS@*/
/*@constant int PF_NS@*/
/*@constant int PF_ISO@*/
/*@constant int PF_OSI@*/
/*@constant int PF_ECMA@*/
/*@constant int PF_DATAKIT@*/
/*@constant int PF_CCITT@*/
/*@constant int PF_SNA@*/
/*@constant int PF_DECnet@*/
/*@constant int PF_DLI@*/
/*@constant int PF_LAT@*/
/*@constant int PF_HYLINK@*/
/*@constant int PF_APPLETALK@*/
/*@constant int PF_ROUTE@*/
/*@constant int PF_LINK@*/
/*@constant int PF_XTP@*/
/*@constant int PF_COIP@*/
/*@constant int PF_CNT@*/
/*@constant int PF_SIP@*/
/*@constant int PF_IPX@*/
/*@constant int PF_RTIP@*/
/*@constant int PF_PIP@*/
/*@constant int PF_ISDN@*/
/*@constant int PF_MAX@*/
/*@constant int NET_MAXID@*/
/*@constant int NET_RT_DUMP@*/
/*@constant int NET_RT_FLAGS@*/
/*@constant int NET_RT_IFLIST@*/
/*@constant int NET_RT_MAXID@*/
/*@constant int SOMAXCONN@*/
/*@constant int SCM_RIGHTS@*/

 struct sockaddr {
	u_char	sa_len;			/* total length */
	u_char	sa_family;		/* address family */
	char	sa_data[14];		/* actually longer; address value */
};

 struct linger {
	int	l_onoff;		/* option on/off */
	int	l_linger;		/* linger time */
};

 struct sockproto {
	u_short	sp_family;		/* address family */
	u_short	sp_protocol;		/* protocol */
};
 struct msghdr {
	caddr_t	msg_name;		/* optional address */
	u_int	msg_namelen;		/* size of address */
	struct	iovec *msg_iov;		/* scatter/gather array */
	u_int	msg_iovlen;		/* # elements in msg_iov */
	caddr_t	msg_control;		/* ancillary data, see below */
	u_int	msg_controllen;		/* ancillary data buffer len */
	int	msg_flags;		/* flags on received message */
};

 struct cmsghdr {
	u_int	cmsg_len;		/* data byte count, including hdr */
	int	cmsg_level;		/* originating protocol */
	int	cmsg_type;		/* protocol-specific type */
/* followed by	u_char  cmsg_data[]; */
};

	extern int
accept (int s, struct sockaddr *addr, int *addrlen)
	/*@modifies *addrlen, errno@*/;

	extern int
bind (int s, struct sockaddr *name, int namelen)
	/*@modifies errno, fileSystem@*/;

	extern int
connect (int s, struct sockaddr *name, int namelen)
	/*@modifies errno, internalState@*/;

int getpeername (int s, /*@out@*/ struct sockaddr *name, size_t *namelen)
	/*@modifies *name, *namelen, errno@*/;

int getsockname (int s, struct sockaddr *address, size_t *address_len)
  //   /*@requires maxSet(address) >= ( *address_len) @*/ 
  /*@modifies *address, *address_len, errno@*/;

int getsockopt (int s, int level, int optname, /*@out@*/ void *optval, size_t *optlen)
	/*@modifies *optval, *optlen, errno@*/;

	extern int
listen (int s, int backlog)
	/*@modifies errno, internalState@*/;

	extern ssize_t
recv (int s, /*@out@*/ void *buf, size_t len, int flags)
	/*@modifies *buf, errno@*/;

	extern ssize_t
recvfrom (int s, void *buf, size_t len, int flags, /*@null@*/ struct sockaddr *from, int *fromlen)
	/*@modifies *buf, *from, *fromlen, errno@*/;

	extern ssize_t
recvmsg (int s, struct msghdr *msg, int flags)
	/*@modifies msg->msg_iov->iov_base[], errno@*/;

	extern ssize_t
send (int s, const void *msg, size_t len, int flags)
	/*@modifies errno@*/;

	extern ssize_t
sendto (int s, const void *msg, size_t len, int flags, const struct sockaddr *to, int tolen)
	/*@modifies errno@*/;

	extern ssize_t
sendmsg (int s, const struct msghdr *msg, int flags)
	/*@modifies errno@*/;

	extern int
setsockopt (int s, int level, int optname, const void *optval, int optlen)
	/*@modifies internalState, errno@*/;

	extern int
shutdown (int s, int how)
	/*@modifies errno@*/;

	extern int
socket (int domain, int type, int protocol)
	/*@modifies errno@*/;

	extern int
socketpair (int d, int type, int protocol, /*@out@*/ int *sv)
	/*@modifies errno@*/;

/*@constant int BADSIG@*/
/*@constant int SA_ONSTACK@*/
/*@constant int SA_RESTART@*/
/*@constant int SA_DISABLE@*/
/*@constant int SIGBUS@*/
/*@constant int SIGEMT@*/
/*@constant int SIGINFO@*/
/*@constant int SIGIO@*/
/*@constant int SIGIOT@*/
/*@constant int SIGPOLL@*/
/*@constant int SIGPROF@*/
/*@constant int SIGPWR@*/
/*@constant int SIGSYS@*/
/*@constant int SIGTRAP@*/
/*@constant int SIGURG@*/
/*@constant int SIGVTALRM@*/
/*@constant int SIGWINCH@*/
/*@constant int SIGXCPU@*/
/*@constant int SIGXFSZ@*/

extern void psignal (int sig, const char *msg)
   /*@modifies fileSystem@*/;

	extern int
setenv (const char *name, const char *value, int overwrite)
	/*@globals environ@*/
	/*@modifies *environ, errno@*/;

	extern void
unsetenv (const char *name)
	/*@globals environ@*/
	/*@modifies *environ@*/;

/*________________________________________________________________________
 * sys/wait.h
 */

	extern int
WCOREDUMP (int x)
	/*@*/;

	extern int
W_EXITCODE (int ret, int sig)
	/*@*/;

	extern int
W_STOPCODE (int sig)
	/*@*/;

/*@constant int WAIT_ANY@*/
/*@constant int WAIT_MYPGRP@*/
/*@constant int WSTOPPED@*/

	extern pid_t
wait3 (int *statloc, int options, /*@null@*/ /*@out@*/ struct rusage *rusage)
	/*@modifies *statloc, *rusage, errno@*/;

	extern pid_t
wait4 (pid_t p, int *statloc, int opt, /*@null@*/ /*@out@*/ struct rusage *r)
	/*@modifies *statloc, *r, errno@*/;

struct timeval {
  long	tv_sec;
  long	tv_usec;
} ;

struct timespec {
  long	ts_sec;
  long	ts_nsec;
} ;

struct timezone {
  int	tz_minuteswest;
  int	tz_dsttime;
} ;

/*@constant int DST_NONE@*/
/*@constant int DST_USA@*/
/*@constant int DST_AUST@*/
/*@constant int DST_WET@*/
/*@constant int DST_MET@*/
/*@constant int DST_EET@*/
/*@constant int DST_CAN@*/

/*@constant int ITIMER_PROF@*/
/*@constant int ITIMER_REAL@*/
/*@constant int ITIMER_VIRTUAL@*/

 struct itimerval {
	struct	timeval it_interval;
	struct	timeval it_value;
};

 struct clockinfo {
	int	hz;
	int	tick;
	int	stathz;
	int	profhz;
};

	extern int
adjtime (const struct timeval *delta, /*@null@*/ /*@out@*/ struct timeval *olddelta)
	/*@modifies internalState, *olddelta, errno@*/;

	extern int
getitimer (int which, /*@out@*/ struct itimerval *value)
	/*@modifies errno, *value*/;

	extern int
gettimeofday (/*@null@*/ /*@out@*/ struct timeval *tp, /*@null@*/ /*@out@*/ struct timezone *tzp)
	/*@modifies *tp, *tzp, errno@*/;

	extern int
setitimer (int which, struct itimerval *val, /*@null@*/ /*@out@*/ struct itimerval *oval)
	/*@modifies *oval, errno, internalState*/;

	extern int
settimeofday (const struct timeval *t, const struct timezone *z)
	/*@modifies internalState, errno@*/;

	extern int
utimes (const char *file, /*@null@*/ const struct timeval *times)
	/*@modifies fileSystem, errno*/;

/*________________________________________________________________________
 * sys/mman.h
 */

/*@constant int PROT_READ@*/
/*@constant int PROT_WRITE@*/
/*@constant int PROT_EXEC@*/
/*@constant int MAP_SHARED@*/
/*@constant int MAP_PRIVATE@*/
/*@constant int MAP_COPY@*/
/*@constant int MAP_FIXED@*/
/*@constant int MAP_RENAME@*/
/*@constant int MAP_NORESERVE@*/
/*@constant int MAP_INHERIT@*/
/*@constant int MAP_NOEXTEND@*/
/*@constant int MAP_HASSEMAPHORE@*/
/*@constant int MS_ASYNC@*/
/*@constant int MS_INVALIDATE@*/
/*@constant int MAP_FILE@*/
/*@constant int MAP_ANON@*/
/*@constant int MADV_NORMAL@*/
/*@constant int MADV_RANDOM@*/
/*@constant int MADV_SEQUENTIAL@*/
/*@constant int MADV_WILLNEED@*/
/*@constant int MADV_DONTNEED@*/

	extern caddr_t
mmap (/*@null@*/ /*@returned@*/ caddr_t addr, size_t len, int prot, int flags, int fd, off_t offset)
	/*@modifies addr@*/;

	extern int
madvise (caddr_t addr, int len, int behav)
	/*@*/;

	extern int
mprotect (caddr_t addr, int len, int prot)
	/*@*/;

	extern int
	int munmap (/*@only@*/ caddr_t addr, size_t len)
     /*@modifies fileSystem, *addr, errno @*/;
    
	extern int
msync (caddr_t addr, int len, int flags)
	/*@*/;

	extern int
mlock (caddr_t addr, size_t len)
	/*@*/;

	extern int
munlock (caddr_t addr, size_t len)
	/*@*/;


/*________________________________________________________________________
 * sys/ioctl.h
 */

 struct winsize {
	unsigned short	ws_row;
	unsigned short	ws_col;
	unsigned short	ws_xpixel;
	unsigned short	ws_ypixel;
};

/*@constant int TIOCMODG@*/
/*@constant int TIOCMODS@*/
/*@constant int TIOCM_LE@*/
/*@constant int TIOCM_DTR@*/
/*@constant int TIOCM_RTS@*/
/*@constant int TIOCM_ST@*/
/*@constant int TIOCM_SR@*/
/*@constant int TIOCM_CTS@*/
/*@constant int TIOCM_CAR@*/
/*@constant int TIOCM_CD@*/
/*@constant int TIOCM_RNG@*/
/*@constant int TIOCM_RI@*/
/*@constant int TIOCM_DSR@*/
/*@constant int TIOCEXCL@*/
/*@constant int TIOCNXCL@*/
/*@constant int TIOCFLUSH@*/
/*@constant int TIOCGETA@*/
/*@constant int TIOCSETA@*/
/*@constant int TIOCSETAW@*/
/*@constant int TIOCSETAF@*/
/*@constant int TIOCGETD@*/
/*@constant int TIOCSETD@*/
/*@constant int TIOCSBRK@*/
/*@constant int TIOCCBRK@*/
/*@constant int TIOCSDTR@*/
/*@constant int TIOCCDTR@*/
/*@constant int TIOCGPGRP@*/
/*@constant int TIOCSPGRP@*/
/*@constant int TIOCOUTQ@*/
/*@constant int TIOCSTI@*/
/*@constant int TIOCNOTTY@*/
/*@constant int TIOCPKT@*/
/*@constant int TIOCPKT_DATA@*/
/*@constant int TIOCPKT_FLUSHREAD@*/
/*@constant int TIOCPKT_FLUSHWRITE@*/
/*@constant int TIOCPKT_STOP@*/
/*@constant int TIOCPKT_START@*/
/*@constant int TIOCPKT_NOSTOP@*/
/*@constant int TIOCPKT_DOSTOP@*/
/*@constant int TIOCPKT_IOCTL@*/
/*@constant int TIOCSTOP@*/
/*@constant int TIOCSTART@*/
/*@constant int TIOCMSET@*/
/*@constant int TIOCMBIS@*/
/*@constant int TIOCMBIC@*/
/*@constant int TIOCMGET@*/
/*@constant int TIOCREMOTE@*/
/*@constant int TIOCGWINSZ@*/
/*@constant int TIOCSWINSZ@*/
/*@constant int TIOCUCNTL@*/
/*@constant int TIOCSTAT@*/
/*@constant int TIOCCONS@*/
/*@constant int TIOCSCTTY@*/
/*@constant int TIOCEXT@*/
/*@constant int TIOCSIG@*/
/*@constant int TIOCDRAIN@*/
/*@constant int TIOCMSDTRWAIT@*/
/*@constant int TIOCMGDTRWAIT@*/
/*@constant int TIOCTIMESTAMP@*/
/*@constant int TIOCSDRAINWAIT@*/
/*@constant int TIOCGDRAINWAIT@*/
/*@constant int TTYDISC@*/
/*@constant int TABLDISC@*/
/*@constant int SLIPDISC@*/
/*@constant int PPPDISC@*/

/*@constant int MAXHOSTNAMELEN@*/

	extern void
FD_CLR (int n, fd_set *p)
	/*@modifies *p@*/;

	extern void
FD_COPY (fd_set *f, /*@out@*/ fd_set *t)
	/*@modifies *t@*/;

	extern int /*@alt lltX_bool@*/
FD_ISSET (int n, fd_set *p)
	/*@*/;

	extern void
FD_SET (int n, fd_set *p)
	/*@modifies *p@*/;

	extern void
FD_ZERO (fd_set /*@out@*/ *p)
	/*@modifies *p@*/;

	extern int
fchdir (int fd)
	/*@modifies internalState, errno@*/;

	extern int
fchown (int fd, uid_t owner, gid_t group)
	/*@modifies errno, fileSystem@*/;

	extern int
fsync (int fd)
	/*@modifies errno, fileSystem@*/;

	extern int
ftruncate (int fd, off_t length)
	/*@modifies errno, fileSystem@*/;

int gethostname (/*@out@*/ char *address, size_t address_len) 
   /*:errorstatus@*/
   /*@modifies address@*/ ;

int initgroups (const char *name, int basegid)
   /*@modifies internalState@*/;

	extern int
lchown (const char *path, uid_t owner, gid_t group)
	/*@modifies errno, fileSystem@*/;

	extern int
readlink (const char *path, /*@out@*/ char *buf, int size)
     /*@modifies *buf, errno@*/ /*@ensures result <= size @*/;

	extern int
select (int mfd, fd_set /*@null@*/ *r, fd_set /*@null@*/ *w, fd_set /*@null@*/ *e, struct timeval *t)
	/*@modifies *r, *w, *e, *t, errno@*/;

	extern int
setegid (gid_t egid)
	/*@modifies errno, internalState@*/;

	extern int
seteuid (uid_t euid)
	/*@modifies errno, internalState@*/;

	extern int
setgroups (int ngroups, const gid_t *gidset)
	/*@modifies errno, internalState@*/;

	extern int
setregid (gid_t rgid, gid_t egid)
	/*@modifies errno, internalState@*/;

	extern int
setreuid (gid_t ruid, gid_t euid)
	/*@modifies errno, internalState@*/;

	extern void
sync (void)
	/*@modifies fileSystem@*/;

	extern int
symlink (const char *path, const char *path2)
	/*@modifies fileSystem@*/;

	extern int
truncate (const char *name, off_t length)
	/*@modifies errno, fileSystem@*/;

/*@constant int EBADRPC@*/
/*@constant int ERPCMISMATCH@*/
/*@constant int EPROGUNAVAIL@*/
/*@constant int EPROGMISMATCH@*/
/*@constant int EPROCUNAVAIL@*/
/*@constant int EFTYPE@*/
/*@constant int EAUTH@*/
/*@constant int ENEEDAUTH@*/
/*@constant int ELAST@*/

/*________________________________________________________________________
 * tar.h
 */

/*@unchecked@*/ extern char *TMAGIC;
/*@constant int TMAGLEN@*/
/*@unchecked@*/ extern char *TVERSION;
/*@constant int TVERSLEN@*/

/*@constant int REGTYPE@*/
/*@constant int AREGTYPE@*/
/*@constant int LNKTYPE@*/
/*@constant int SYMTYPE@*/
/*@constant int CHRTYPE@*/
/*@constant int BLKTYPE@*/
/*@constant int DIRTYPE@*/
/*@constant int FIFOTYPE@*/
/*@constant int CONTTYPE@*/

/*@constant int TSUID@*/
/*@constant int TSGID@*/
/*@constant int TSVTX@*/

/*@constant int TUREAD@*/
/*@constant int TUWRITE@*/
/*@constant int TUEXEC@*/
/*@constant int TGREAD@*/
/*@constant int TGWRITE@*/
/*@constant int TGEXEC@*/
/*@constant int TOREAD@*/
/*@constant int TOWRITE@*/
/*@constant int TOEXEC@*/

struct ipc_perm {
  uid_t	uid;	/* user id */
  gid_t	gid;	/* group id */
  uid_t	cuid;	/* creator user id */
  gid_t	cgid;	/* creator group id */
  mode_t	mode;	/* r/w permission */
  ulong	seq;	/* slot usage sequence number */
  key_t	key;	/* user specified msg/sem/shm key */
} ;

/*@constant int	IPC_R@*/
/*@constant int	IPC_W@*/
/*@constant int	IPC_M@*/
/*@constant int	IPC_CREAT@*/
/*@constant int	IPC_EXCL@*/
/*@constant int	IPC_NOWAIT@*/
/*@constant key_t IPC_PRIVATE@*/
/*@constant int IPC_RMID@*/
/*@constant int IPC_SET@*/
/*@constant int IPC_STAT@*/

/*________________________________________________________________________
 * sys/msg.h
 */

 struct msqid_ds {
	struct	ipc_perm msg_perm;	/* msg queue permission bits */
	struct	msg *msg_first;	/* first message in the queue */
	struct	msg *msg_last;	/* last message in the queue */
	u_long	msg_cbytes;	/* number of bytes in use on the queue */
	u_long	msg_qnum;	/* number of msgs in the queue */
	u_long	msg_qbytes;	/* max # of bytes on the queue */
	pid_t	msg_lspid;	/* pid of last msgsnd() */
	pid_t	msg_lrpid;	/* pid of last msgrcv() */
	time_t	msg_stime;	/* time of last msgsnd() */
	time_t	msg_rtime;	/* time of last msgrcv() */
	time_t	msg_ctime;	/* time of last msgctl() */
};

 struct mymesg {
	long	mtype;		/* message type (+ve integer) */
	char	mtext[];	/* message body */
};

/*@constant int MSG_NOERROR@*/
/*@constant int MSGMAX@*/
/*@constant int MSGMNB@*/
/*@constant int MSGMNI@*/
/*@constant int MSGTQL@*/

	extern int
msgctl (int id , int cmd, /*@out@*/ struct msqid_ds *buf)
	/*@modifies errno, *buf@*/;

	extern int
msgget (key_t key, int flag)
	/*@modifies errno@*/;

	extern int
msgrcv (int id, /*@out@*/ void *ptr, size_t nbytes, long type, int flags)
	/*@modifies errno, *ptr@*/;

	extern int
msgsnd (int id, const void *ptr, size_t nbytes, int flag)
	/*@modifies errno@*/;

/*________________________________________________________________________
 * sys/sem.h
 */

 struct semid_ds {
	struct ipc_perm sem_perm;
	struct sem     *sem_base;
	ushort          sem_nsems;
	time_t          sem_otime;
	time_t          sem_ctime;
};

 struct sem {
	ushort semval;
	pid_t  sempid;
	ushort semncnt;
	ushort semzcnt;
};

 union semun {
	int val;
	struct semid_ds *buf;
	ushort *array;
};

 struct sembuf {
	ushort sem_num;
	short sem_op;
	short sem_flg;
};

/*@constant int SEM_A@*/
/*@constant int SEMAEM@*/
/*@constant int SEMMNI@*/
/*@constant int SEMMNS@*/
/*@constant int SEMMNU@*/
/*@constant int SEMMSL@*/
/*@constant int SEMOPN@*/
/*@constant int SEM_R@*/
/*@constant int SEMUME@*/
/*@constant int SEM_UNDO@*/
/*@constant int SEMVMX@*/
/*@constant int GETVAL@*/
/*@constant int SETVAL@*/
/*@constant int GETPID@*/
/*@constant int GETNCNT@*/
/*@constant int GETZCNT@*/
/*@constant int GETALL@*/
/*@constant int SETALL@*/

/*@constant int ERMID@*/

	extern int
semctl (int id, int semnum, int cmd, union semun arg)
	/*@modifies errno@*/;

	extern int
semget (key_t key, int nsems, int flag)
	/*@modifies errno@*/;

	extern int
semop (int id, struct sembuf *semoparray, size_t nops)
	/*@modifies errno@*/;

/*________________________________________________________________________
 * sys/shm.h
 */

 struct shmid_ds {
	struct ipc_perm shm_perm;
	int shm_segsz;
	ushort shm_lkcnt;
	pid_t shm_lpid;
	pid_t shm_cpid;
	ulong shm_nattch;
	ulong shm_cnattch;
	time_t shm_atime;
	time_t shm_dtime;
	time_t shm_ctime;
};

/*@constant int SHMLBA@*/
/*@constant int SHM_LOCK@*/
/*@constant int SHMMAX@*/
/*@constant int SHMMIN@*/
/*@constant int SHMMNI@*/
/*@constant int SHM_R@*/
/*@constant int SHM_RDONLY@*/
/*@constant int SHM_RND@*/
/*@constant int SHMSEG@*/
/*@constant int SHM_W@*/
/*@constant int SHM_UNLOCK@*/

	void *
shmat (int id, /*@null@*/ void *addr, int flag)
	/*@modifies errno@*/;

	extern int
shmctl (int id, int cmd, /*@out@*/ struct shmid_ds *buf)
	/*@modifies errno, *buf@*/;

	extern int
shmdt (void *addr)
	/*@modifies errno@*/;

	extern int
shmget (key_t key, int size, int flag)
	/*@modifies errno@*/;

/*________________________________________________________________________
 * syslog.h
 */

/*@constant int LOG_EMERG@*/
/*@constant int LOG_ALERT@*/
/*@constant int LOG_CRIT@*/
/*@constant int LOG_ERR@*/
/*@constant int LOG_WARNING@*/
/*@constant int LOG_NOTICE@*/
/*@constant int LOG_INFO@*/
/*@constant int LOG_DEBUG@*/

/*@constant int LOG_KERN@*/
/*@constant int LOG_USER@*/
/*@constant int LOG_MAIL@*/
/*@constant int LOG_DAEMON@*/
/*@constant int LOG_AUTH@*/
/*@constant int LOG_SYSLOG@*/
/*@constant int LOG_LPR@*/
/*@constant int LOG_NEWS@*/
/*@constant int LOG_UUCP@*/
/*@constant int LOG_CRON@*/
/*@constant int LOG_AUTHPRIV@*/
/*@constant int LOG_FTP@*/
/*@constant int LOG_LOCAL0@*/
/*@constant int LOG_LOCAL1@*/
/*@constant int LOG_LOCAL2@*/
/*@constant int LOG_LOCAL3@*/
/*@constant int LOG_LOCAL4@*/
/*@constant int LOG_LOCAL5@*/
/*@constant int LOG_LOCAL6@*/
/*@constant int LOG_LOCAL7@*/

/*@constant int LOG_PID@*/
/*@constant int LOG_CONS@*/
/*@constant int LOG_ODELAY@*/
/*@constant int LOG_NDELAY@*/
/*@constant int LOG_NOWAIT@*/
/*@constant int LOG_PERROR@*/

	extern int
LOG_MASK (int pri)
	/*@*/;

	extern int
LOG_UPTO (int pri)
	/*@*/;

	extern void
closelog (void)
	/*@modifies fileSystem@*/;

	extern void
openlog (const char *ident, int logopt, int facility)
	/*@modifies fileSystem@*/;

	extern int
setlogmask (int maskpri)
	/*@modifies internalState@*/;

	extern void /*@printflike@*/
syslog (int priority, const char *message, ...)
	/*@modifies fileSystem@*/;

	extern void
vsyslog (int priority, const char *message, va_list args)
	/*@modifies fileSystem@*/;

/*________________________________________________________________________
 * pwd.h
 */

	extern extern void
endpwent (void)
	/*@modifies internalState@*/;

	extern /*@null@*/ struct passwd *
getpwent (void)
	/*@modifies internalState@*/;

	extern int
setpassent (int stayopen)
	/*@modifies internalState@*/;

	extern int
setpwent (void)
	/*@modifies internalState@*/;

/*________________________________________________________________________
 * grp.h
 */

	extern void
endgrent (void)
	/*@modifies internalState@*/;

	extern /*@null@*/ struct group *
getgrent (void)
	/*@modifies internalState@*/;

	extern int
setgrent (void)
	/*@modifies internalState@*/;

	extern void
setgrfile (const char *name)
	/*@modifies internalState@*/;

	extern int
setgroupent (int stayopen)
	/*@modifies internalState@*/;

/*
** sys/stat.h
**
** evans 2001-08-26 - updated from http://www.opengroup.org/onlinepubs/007908799/xsh/sysstat.h.html
*/

/*
** struct stat replaces POSIX version - more required fields in Unix
*/

struct stat {
  dev_t     st_dev; /* ID of device containing file */
  ino_t     st_ino; /* file serial number */
  mode_t    st_mode; /* mode of file (see below) */
  nlink_t   st_nlink; /* number of links to the file */
  uid_t     st_uid; /* user ID of file */
  gid_t     st_gid; /* group ID of file */
  dev_t     st_rdev; /* device ID (if file is character or block special) */
  off_t     st_size; /* file size in bytes (if file is a regular file) */
  time_t    st_atime; /* time of last access */
  time_t    st_mtime; /* time of last data modification */
  time_t    st_ctime; /* time of last status change */
  blksize_t st_blksize; /* a filesystem-specific preferred I/O block size for
			   this object.  In some filesystem types, this may
			   vary from file to file */
  blkcnt_t  st_blocks; /*  number of blocks allocated for this object */
};

/*@constant mode_t S_IFMT@*/
/*@constant mode_t S_IFBLK@*/
/*@constant mode_t S_IFCHR@*/
/*@constant mode_t S_IFIFO@*/
/*@constant mode_t S_IFREG@*/
/*@constant mode_t S_IFDIR@*/
/*@constant mode_t S_IFLNK@*/

/*@constant mode_t S_IRWXU@*/
/*@constant mode_t S_IRUSR@*/
/*@constant mode_t S_IWUSR@*/
/*@constant mode_t S_IXUSR@*/
/*@constant mode_t S_IRWXG@*/
/*@constant mode_t S_IRGRP@*/
/*@constant mode_t S_IWGRP@*/
/*@constant mode_t S_IXGRP@*/
/*@constant mode_t S_IRWXO@*/
/*@constant mode_t S_IROTH@*/
/*@constant mode_t S_IWOTH@*/
/*@constant mode_t S_IXOTH@*/
/*@constant mode_t S_ISUID@*/
/*@constant mode_t S_ISGID@*/
/*@constant mode_t S_ISVTX@*/

# if 0
/*These are the old definitions - they don't appear to be in the Single UNIX Specification */

/*@constant int S_ISTXT@*/
/*@constant int S_IREAD@*/
/*@constant int S_IWRITE@*/
/*@constant int S_IEXEC@*/
/*@constant int S_IFMT@*/
/*@constant int S_IFIFO@*/
/*@constant int S_IFCHR@*/
/*@constant int S_IFDIR@*/
/*@constant int S_IFBLK@*/
/*@constant int S_IFREG@*/
/*@constant int S_IFLNK@*/
/*@constant int S_IFSOCK@*/
/*@constant int S_ISVTX@*/
/*@constant int S_ISVTX@*/
/*@constant int SF_SETTABLE@*/
/*@constant int SF_ARCHIVED@*/
/*@constant int ACCESSPERMS@*/
/*@constant int ALLPERMS@*/
/*@constant int DEFFILEMODE@*/
/*@constant int S_BLKSIZE@*/
/*@constant int SF_IMMUTABLE@*/
/*@constant int SF_APPEND@*/
/*@constant int UF_NODUMP@*/
/*@constant int UF_IMMUTABLE@*/
/*@constant int UF_APPEND@*/
# endif

int /*@alt lltX_bool@*/ S_ISBLK (/*@sef@*/ mode_t m) /*@*/;
int /*@alt lltX_bool@*/ S_ISCHR (/*@sef@*/ mode_t m) /*@*/;
int /*@alt lltX_bool@*/ S_ISDIR (/*@sef@*/ mode_t m) /*@*/;
int /*@alt lltX_bool@*/ S_ISFIFO (/*@sef@*/ mode_t m) /*@*/;
int /*@alt lltX_bool@*/ S_ISREG (/*@sef@*/ mode_t m) /*@*/;
int /*@alt lltX_bool@*/ S_ISLNK (/*@sef@*/ mode_t m) /*@*/;

int /*@alt lltX_bool@*/ S_TYPEISMQ (/*@sef@*/ struct stat *buf) /*@*/ ;
int /*@alt lltX_bool@*/ S_TYPEISSEM (/*@sef@*/ struct stat *buf) /*@*/ ;
int /*@alt lltX_bool@*/ S_TYPEISSHM  (/*@sef@*/ struct stat *buf) /*@*/ ;

/* in POSIX: chmod, fstat, mkdir, mkfifo, stat, umask */

int lstat(const char *, /*@out@*/ struct stat *)
  /*:errorcode -1:*/
  /*@modifies errno@*/ ;

int mknod (const char *, mode_t, dev_t)
  /*@warn portability "The only portable use of mknod is to create FIFO-special file. If mode is not S_IFIFO or dev is not 0, the behaviour of mknod() is unspecified."@*/
  /*:errorcode -1:*/
  /*@modifies errno@*/ ;

int chflags (const char *path, u_long flags)
  /*@warn unixstandard "Not in Single UNIX Specification Version 2"@*/
  /*@modifies fileSystem, errno@*/;

int fchflags (int fd, u_long flags)
  /*@warn unixstandard "Not in Single UNIX Specification Version 2"@*/
  /*@modifies fileSystem, errno@*/;

/*________________________________________________________________________
 * stropts.h
 */

/*@constant int FMNAMESZ@*/
/*@constant int MSG_BAND@*/
/*@constant int MSG_HIPRI@*/
/*@constant int RS_HIPRI@*/
/*@constant int S_INPUT@*/
/*@constant int S_RDNORM@*/
/*@constant int S_RDBAND@*/
/*@constant int S_BANDURG@*/
/*@constant int S_HIPRI@*/
/*@constant int S_OUTPUT@*/
/*@constant int S_WRNORM@*/
/*@constant int S_WRBAND@*/
/*@constant int S_MSG@*/
/*@constant int S_ERROR@*/
/*@constant int S_HANGUP@*/

 struct strbuf {
	int maxlen;
	int len;
	char *buf;
}

 struct str_mlist {
	char l_name[];
}

 struct str_list {
	int sl_nmods;
	struct str_mlist *sl_modlist;
}

	extern int
getmsg (int fd, /*@out@*/ struct strbuf *c, /*@out@*/ struct strbuf *d, int *f)
	/*@modifies *c, *d, errno@*/;

	extern int
getpmsg (int fd, /*@out@*/ struct strbuf *c, /*@out@*/ struct strbuf *d, int *b, int *f)
	/*@modifies *b, *c, *d, errno@*/;

	extern int
putmsg (int fd, const struct strbuf *c, const struct strbuf *d, int *f)
	/*@modifies internalState, errno@*/;

extern int putpmsg (int fd, const struct strbuf *c, const struct strbuf *d, int b, int *f)
   /*@modifies internalState, errno@*/;

/*________________________________________________________________________
 * sys/resource.h
 */

/*@constant int RLIMIT_CPU@*/
/*@constant int RLIMIT_FSIZE@*/
/*@constant int RLIMIT_DATA@*/
/*@constant int RLIMIT_STACK@*/
/*@constant int RLIMIT_CORE@*/
/*@constant int RLIMIT_RSS@*/
/*@constant int RLIMIT_MEMLOCK@*/
/*@constant int RLIMIT_NPROC@*/
/*@constant int RLIMIT_NOFILE@*/
/*@constant int RLIM_NLIMITS@*/
/*@constant int RLIM_INFINITY@*/
/*@constant int PRIO_MIN@*/
/*@constant int PRIO_MAX@*/
/*@constant int PRIO_PROCESS@*/
/*@constant int PRIO_PGRP@*/
/*@constant int PRIO_USER@*/
/*@constant int RUSAGE_SELF@*/
/*@constant int RUSAGE_CHILDREN@*/

 struct rusage {
	struct timeval ru_utime;        /* user time used */
	struct timeval ru_stime;        /* system time used */
	long    ru_maxrss;              /* max resident set size */
	long    ru_ixrss;               /* integral shared memory size */
	long    ru_idrss;               /* integral unshared data " */
	long    ru_isrss;               /* integral unshared stack " */
	long    ru_minflt;              /* page reclaims */
	long    ru_majflt;              /* page faults */
	long    ru_nswap;               /* swaps */
	long    ru_inblock;             /* block input operations */
	long    ru_oublock;             /* block output operations */
	long    ru_msgsnd;              /* messages sent */
	long    ru_msgrcv;              /* messages received */
	long    ru_nsignals;            /* signals received */
	long    ru_nvcsw;               /* voluntary context switches */
	long    ru_nivcsw;              /* involuntary " */
};

 struct rlimit {
	long  rlim_cur;
	long  rlim_max;
};

 struct loadavg {
	unsigned long ldavg[3];
	long fscale;
};

	extern int
getpriority (int which, int who)
	/*@modifies errno@*/;

	extern int
getrlimit (int res, /*@out@*/ struct rlimit *rlp)
	/*@modifies *rlp, errno@*/;

	extern int
getrusage (int who, /*@out@*/ struct rusage *rusage)
	/*@modifies *rusage, errno@*/;

	extern int
setpriority (int which, int who, int prio)
	/*@modifies errno, internalState@*/;

	extern int
setrlimit (int resource, const struct rlimit *rlp)
	/*@modifies errno, internalState@*/;


/*
** in <netdb.h>
*/

struct servent
{
  /*@observer@*/ char *s_name;			/* Official service name.  */
  /*@observer@*/ char **s_aliases;		/* Alias list.  */
  int s_port;			                /* Port number.  */
  /*@observer@*/ char *s_proto;		        /* Protocol to use.  */
} ;

/*@observer@*/ /*@dependent@*/ /*@null@*/ struct servent *getservbyname (const char *name, /*@null@*/ const char *proto) 
     /*@warn multithreaded "Unsafe in multithreaded applications, use getsrvbyname_r instead"@*/ ;

struct servent *getservbyname_r (const char *name, /*@null@*/ const char *proto, /*@out@*/ /*@returned@*/ struct servent *result, /*@out@*/ char *buffer, int buflen) 
     /*@requires maxSet (buffer) >= buflen@*/ ;


/*@observer@*/ /*@dependent@*/ struct servent *getservbyport (int port, /*@null@*/ const char *proto)
     /*@warn multithreaded "Unsafe in multithreaded applications, use getservbyport_r instead"@*/ ;

struct servent *getservbyport_r (int port, /*@null@*/ const char *proto, /*@out@*/ /*@returned@*/ struct servent *result, /*@out@*/ char *buffer, int buflen)
     /*@requires maxSet (buffer) >= buflen@*/ ;

/*@null@*/ struct servent *getservent (void);

/*@null@*/ struct servent *getservent_r (struct servent *result, char *buffer, int buflen);

int setservent (int stayopen);

int endservent (void);


extern int h_errno;

/*@null@*/ /*@observer@*/ struct hostent *gethostbyname (/*@nullterminated@*/ /*@notnull@*/ const char *name)
     /*@warn multithreaded "Unsafe in multithreaded applications, use gethostbyname_r instead"@*/ 
     /*@modifies h_errno@*/ ;

struct hostent *gethostbyname_r (/*@nullterminated@*/ const char *name, /*@notnull@*/ /*@returned@*/ struct hostent *hent, /*@out@*/ /*@exposed@*/ char *buffer, int bufsize, /*@out@*/ int *h_errnop)
     /*@requires maxSet(buffer) >= bufsize@*/ ;

/*@null@*/ /*@observer@*/ struct hostent *gethostbyaddr (/*@notnull@*/ const void *addr, size_t addrlen, int type) 
     /*@requires maxRead(addr) == addrlen@*/ /*@i534 ??? is this right? */
     /*@warn multithreaded "Unsafe in multithreaded applications, use gethostbyaddr_r instead"@*/ 
     /*@modifies h_errno@*/ ;

struct hostent *gethostbyaddr_r (/*@notnull@*/ const void *addr, size_t addrlen, int type, 
				 /*@returned@*/ /*@out@*/ struct hostent *hent, 
				 /*@exposed@*/ /*@out@*/ char *buffer, int bufsize, /*@out@*/ int *h_errnop)
     /*@requires maxRead(addr) == addrlen 
          /\ maxSet(buffer) >= bufsize@*/ /*@i534 ??? is this right? */ ;

/*@observer@*/ /*@null@*/ struct hostent *gethostent (void)
    /*@warn multithreaded "Unsafe in multithreaded applications, use gethostent_r instead"@*/ ;

struct hostent *gethostent_r (/*@out@*/ /*@returned@*/ struct hostent *hent, /*@exposed@*/ /*@out@*/ char *buffer, int bufsize)
     /*@requires maxSet(buffer) >= bufsize@*/ ;

     /*@i534 need to annotate these: */
struct hostent *fgethostent(FILE *f);

struct hostent *fgethostent_r(FILE*f, struct hostent *hent, char buffer, int bufsize);

void sethostent(int stayopen);

void endhostent(void);

void herror(const char *string);

char *hstrerror(int err);

struct hostent {
  /*@observer@*/ /*@nullterminated@*/ char *h_name;   /* official name of host */
  /*@observer@*/ /*@nullterminated@*/ char * /*:observer@*/ /*:nullterminated@*/ *h_aliases;   /* alias list */
  int  h_addrtype;   /* host address type*/
  int  h_length;   /* length ofaddress*/
  /*@observer@*/ /*@nullterminated@*/ char * /*:observer@*/ /*:nullterminated@*/ *h_addr_list; /* list of addressesfrom name server */
  /*@observer@*/ /*@nullterminated@*/ char *h_addr; /* first address in list (backward compatibility) */
} ;

/*
** arpa/inet.h
*/

typedef uint32_t in_addr_t;

struct in_addr
{
  in_addr_t s_addr;
};

typedef uint16_t in_port_t;

in_addr_t htonl (in_addr_t hostlong) /*@*/ ;
in_port_t htons (in_port_t hostshort) /*@*/ ;
in_addr_t ntohl (in_addr_t netlong) /*@*/ ;
in_port_t ntohs (in_port_t netshort) /*@*/ ;

/*
** unistd.h
*/

int chroot (/*@notnull@*/ /*@nullterminated@*/ const char *path)
   /*:statusreturn@*/
   /*@warn superuser "Only super-user processes may call chroot."@*/
     /*: other wanings? */ ;

int fchroot (int fildes)
   /*:statusreturn@*/
   /*@warn superuser "Only super-user processes may call fchroot."@*/ ;

/*
** ctype.h 
**
** evans 2001-08-26 - added from http://www.opengroup.org/onlinepubs/007908799/xsh/ctype.h.html
*/

# ifdef STRICT
lltX_bool isascii(int) /*@*/ ;
lltX_bool toascii(int) /*@*/ ;
char _toupper(/*@sef@*/ int) /*@*/ ;
char  _tolower(/*@sef@*/ int) /*@*/ ;
# else
lltX_bool /*@alt int@*/ isascii(int /*@alt unsigned char@*/) /*@*/ ;
lltX_bool /*@alt int@*/ toascii(int /*@alt unsigned char@*/);
char  /*@alt int@*/ _toupper(/*@sef@*/ int /*@alt unsigned char@*/);
char /*@alt int@*/ _tolower(/*@sef@*/ int /*@alt unsigned char@*/);
# endif

/* other ctype.h functions in ansi.h */

/*
** stdlib.h
**
** evans 2001-08-27 - added from http://www.opengroup.org/onlinepubs/007908799/xsh/drand48.html
*/

double drand48 (void) /*@modifies internalState@*/ ; 
double erand48 (unsigned short int xsubi[3]) /*@modifies internalState@*/ ; 
void srand48 (long int seedval) /*@modifies internalState@*/ ; 

/*
** netinet/in.h
**
** evans 2001-08-27 - added from http://www.opengroup.org/onlinepubs/007908799/xns/netinetin.h.html
*/

typedef /*@unsignedintegraltype@*/ in_port_t; /* An unsigned integral type of exactly 16 bits. */
typedef /*@unsignedintegraltype@*/ in_addr_t; /* An unsigned integral type of exactly 32 bits. */

typedef /*@unsignedintegraltype@*/ sa_family_t;

struct in_addr {
  in_addr_t      s_addr;
} ;

struct sockaddr_in {
  sa_family_t    sin_family;
  in_port_t      sin_port;
  struct in_addr sin_addr;
  unsigned char  sin_zero[8];
} ;


/* The <netinet/in.h> header defines the following macros for use as values of the level argument of 
   getsockopt() and setsockopt(): 
 */

/*@constant int IPPROTO_IP@*/
/*@constant int IPPROTO_ICMP@*/
/*@constant int IPPROTO_TCP@*/
/*@constant int IPPROTO_UDP@*/

/* The <netinet/in.h> header defines the following macros for use as destination addresses for connect(), sendmsg() and sendto(): 
 */

/*@constant in_addr_t INADDR_ANY@*/
/*@constant in_addr_t INADDR_BROADCAST@*/

/*
** dirent.h
**
** evans 2001-08-27 - added from http://www.opengroup.org/onlinepubs/007908799/xsh/dirent.h.html
*/

struct dirent
{
  ino_t  d_ino;
  char   d_name[];    
};

typedef /*@abstract@*/ DIR;

/*@i32  need to check annotations on these */
int closedir (DIR *) /*:errorcode -1*/ ; 
/*@null@*/ DIR *opendir(const char *) ;
struct dirent *readdir(DIR *);
int readdir_r(DIR *, struct dirent *, struct dirent **);
void rewinddir(DIR *);
void seekdir(DIR *, long int);
long int telldir(DIR *);

/*drl added these functions
  stpcpy and stpncpy are found on linux but
  don't seem to be present on other unixes

  thanks to Jeff Johnson for pointing out that
  these functions were in the unix library
*/

/* this function is like strcpy but it reutrns a pointer to the null terminated character in dest instead of the beginning of dest */

extern char * stpcpy(/*@out@*/ /*@returned@*/ char * dest, const char * src)
             /*@modifies *dest @*/
     /*@requires maxSet(dest) >= maxRead(src) @*/
     /*@ensures MaxRead(dest) == MaxRead (src) /\ MaxRead(result) == 0 /\ MaxSet(result) == ( maxSet(dest) - MaxRead(src) ); @*/;


extern char * stpncpy(/*@out@*/ /*@returned@*/ char * dest,
		      const char * src, size_t n)
           /*@modifies *dest @*/
   /*@requires MaxSet(dest) >= ( n - 1 ); @*/ /*@ensures MaxRead (src) >= MaxRead(dest) /\ MaxRead (dest) <= n; @*/
  ;