defines.h - platform/external/openssh - Gitiles

 /*
  * Copyright (c) 1999-2003 Damien Miller.  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.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
  */

 #ifndef _DEFINES_H
 #define _DEFINES_H

 /* $Id: defines.h,v 1.183 2014/09/02 19:33:26 djm Exp $ */


 /* Constants */

 #if defined(HAVE_DECL_SHUT_RD) && HAVE_DECL_SHUT_RD == 0
 enum
 {
   SHUT_RD = 0,		/* No more receptions.  */
   SHUT_WR,			/* No more transmissions.  */
   SHUT_RDWR			/* No more receptions or transmissions.  */
 };
 # define SHUT_RD   SHUT_RD
 # define SHUT_WR   SHUT_WR
 # define SHUT_RDWR SHUT_RDWR
 #endif

 /*
  * Definitions for IP type of service (ip_tos)
  */
 #include <netinet/in_systm.h>
 #include <netinet/ip.h>
 #ifndef IPTOS_LOWDELAY
 # define IPTOS_LOWDELAY          0x10
 # define IPTOS_THROUGHPUT        0x08
 # define IPTOS_RELIABILITY       0x04
 # define IPTOS_LOWCOST           0x02
 # define IPTOS_MINCOST           IPTOS_LOWCOST
 #endif /* IPTOS_LOWDELAY */

 /*
  * Definitions for DiffServ Codepoints as per RFC2474
  */
 #ifndef IPTOS_DSCP_AF11
 # define	IPTOS_DSCP_AF11		0x28
 # define	IPTOS_DSCP_AF12		0x30
 # define	IPTOS_DSCP_AF13		0x38
 # define	IPTOS_DSCP_AF21		0x48
 # define	IPTOS_DSCP_AF22		0x50
 # define	IPTOS_DSCP_AF23		0x58
 # define	IPTOS_DSCP_AF31		0x68
 # define	IPTOS_DSCP_AF32		0x70
 # define	IPTOS_DSCP_AF33		0x78
 # define	IPTOS_DSCP_AF41		0x88
 # define	IPTOS_DSCP_AF42		0x90
 # define	IPTOS_DSCP_AF43		0x98
 # define	IPTOS_DSCP_EF		0xb8
 #endif /* IPTOS_DSCP_AF11 */
 #ifndef IPTOS_DSCP_CS0
 # define	IPTOS_DSCP_CS0		0x00
 # define	IPTOS_DSCP_CS1		0x20
 # define	IPTOS_DSCP_CS2		0x40
 # define	IPTOS_DSCP_CS3		0x60
 # define	IPTOS_DSCP_CS4		0x80
 # define	IPTOS_DSCP_CS5		0xa0
 # define	IPTOS_DSCP_CS6		0xc0
 # define	IPTOS_DSCP_CS7		0xe0
 #endif /* IPTOS_DSCP_CS0 */
 #ifndef IPTOS_DSCP_EF
 # define	IPTOS_DSCP_EF		0xb8
 #endif /* IPTOS_DSCP_EF */

 #ifndef PATH_MAX
 # ifdef _POSIX_PATH_MAX
 # define PATH_MAX _POSIX_PATH_MAX
 # endif
 #endif

 #ifndef MAXPATHLEN
 # ifdef PATH_MAX
 #  define MAXPATHLEN PATH_MAX
 # else /* PATH_MAX */
 #  define MAXPATHLEN 64
 /* realpath uses a fixed buffer of size MAXPATHLEN, so force use of ours */
 #  ifndef BROKEN_REALPATH
 #   define BROKEN_REALPATH 1
 #  endif /* BROKEN_REALPATH */
 # endif /* PATH_MAX */
 #endif /* MAXPATHLEN */

 #ifndef HOST_NAME_MAX
 # include "netdb.h" /* for MAXHOSTNAMELEN */
 # if defined(_POSIX_HOST_NAME_MAX)
 #  define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
 # elif defined(MAXHOSTNAMELEN)
 #  define HOST_NAME_MAX MAXHOSTNAMELEN
 # else
 #  define HOST_NAME_MAX	255
 # endif
 #endif /* HOST_NAME_MAX */

 #if defined(HAVE_DECL_MAXSYMLINKS) && HAVE_DECL_MAXSYMLINKS == 0
 # define MAXSYMLINKS 5
 #endif

 #ifndef STDIN_FILENO
 # define STDIN_FILENO    0
 #endif
 #ifndef STDOUT_FILENO
 # define STDOUT_FILENO   1
 #endif
 #ifndef STDERR_FILENO
 # define STDERR_FILENO   2
 #endif

 #ifndef NGROUPS_MAX	/* Disable groupaccess if NGROUP_MAX is not set */
 #ifdef NGROUPS
 #define NGROUPS_MAX NGROUPS
 #else
 #define NGROUPS_MAX 0
 #endif
 #endif

 #if defined(HAVE_DECL_O_NONBLOCK) && HAVE_DECL_O_NONBLOCK == 0
 # define O_NONBLOCK      00004	/* Non Blocking Open */
 #endif

 #ifndef S_IFSOCK
 # define S_IFSOCK 0
 #endif /* S_IFSOCK */

 #ifndef S_ISDIR
 # define S_ISDIR(mode)	(((mode) & (_S_IFMT)) == (_S_IFDIR))
 #endif /* S_ISDIR */

 #ifndef S_ISREG
 # define S_ISREG(mode)	(((mode) & (_S_IFMT)) == (_S_IFREG))
 #endif /* S_ISREG */

 #ifndef S_ISLNK
 # define S_ISLNK(mode)	(((mode) & S_IFMT) == S_IFLNK)
 #endif /* S_ISLNK */

 #ifndef S_IXUSR
 # define S_IXUSR			0000100	/* execute/search permission, */
 # define S_IXGRP			0000010	/* execute/search permission, */
 # define S_IXOTH			0000001	/* execute/search permission, */
 # define _S_IWUSR			0000200	/* write permission, */
 # define S_IWUSR			_S_IWUSR	/* write permission, owner */
 # define S_IWGRP			0000020	/* write permission, group */
 # define S_IWOTH			0000002	/* write permission, other */
 # define S_IRUSR			0000400	/* read permission, owner */
 # define S_IRGRP			0000040	/* read permission, group */
 # define S_IROTH			0000004	/* read permission, other */
 # define S_IRWXU			0000700	/* read, write, execute */
 # define S_IRWXG			0000070	/* read, write, execute */
 # define S_IRWXO			0000007	/* read, write, execute */
 #endif /* S_IXUSR */

 #if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
 #define MAP_ANON MAP_ANONYMOUS
 #endif

 #ifndef MAP_FAILED
 # define MAP_FAILED ((void *)-1)
 #endif

 /*
 SCO Open Server 3 has INADDR_LOOPBACK defined in rpc/rpc.h but
 including rpc/rpc.h breaks Solaris 6
 */
 #ifndef INADDR_LOOPBACK
 #define INADDR_LOOPBACK ((u_long)0x7f000001)
 #endif

 /* Types */

 /* If sys/types.h does not supply intXX_t, supply them ourselves */
 /* (or die trying) */

 #ifndef HAVE_U_INT
 typedef unsigned int u_int;
 #endif

 #ifndef HAVE_INTXX_T
 typedef signed char int8_t;
 # if (SIZEOF_SHORT_INT == 2)
 typedef short int int16_t;
 # else
 #  ifdef _UNICOS
 #   if (SIZEOF_SHORT_INT == 4)
 typedef short int16_t;
 #   else
 typedef long  int16_t;
 #   endif
 #  else
 #   error "16 bit int type not found."
 #  endif /* _UNICOS */
 # endif
 # if (SIZEOF_INT == 4)
 typedef int int32_t;
 # else
 #  ifdef _UNICOS
 typedef long  int32_t;
 #  else
 #   error "32 bit int type not found."
 #  endif /* _UNICOS */
 # endif
 #endif

 /* If sys/types.h does not supply u_intXX_t, supply them ourselves */
 #ifndef HAVE_U_INTXX_T
 # ifdef HAVE_UINTXX_T
 typedef uint8_t u_int8_t;
 typedef uint16_t u_int16_t;
 typedef uint32_t u_int32_t;
 # define HAVE_U_INTXX_T 1
 # else
 typedef unsigned char u_int8_t;
 #  if (SIZEOF_SHORT_INT == 2)
 typedef unsigned short int u_int16_t;
 #  else
 #   ifdef _UNICOS
 #    if (SIZEOF_SHORT_INT == 4)
 typedef unsigned short u_int16_t;
 #    else
 typedef unsigned long  u_int16_t;
 #    endif
 #   else
 #    error "16 bit int type not found."
 #   endif
 #  endif
 #  if (SIZEOF_INT == 4)
 typedef unsigned int u_int32_t;
 #  else
 #   ifdef _UNICOS
 typedef unsigned long  u_int32_t;
 #   else
 #    error "32 bit int type not found."
 #   endif
 #  endif
 # endif
 #define __BIT_TYPES_DEFINED__
 #endif

 /* 64-bit types */
 #ifndef HAVE_INT64_T
 # if (SIZEOF_LONG_INT == 8)
 typedef long int int64_t;
 # else
 #  if (SIZEOF_LONG_LONG_INT == 8)
 typedef long long int int64_t;
 #  endif
 # endif
 #endif
 #ifndef HAVE_U_INT64_T
 # if (SIZEOF_LONG_INT == 8)
 typedef unsigned long int u_int64_t;
 # else
 #  if (SIZEOF_LONG_LONG_INT == 8)
 typedef unsigned long long int u_int64_t;
 #  endif
 # endif
 #endif

 #ifndef HAVE_UINTXX_T
 typedef u_int8_t uint8_t;
 typedef u_int16_t uint16_t;
 typedef u_int32_t uint32_t;
 typedef u_int64_t uint64_t;
 #endif

 #ifndef HAVE_INTMAX_T
 typedef long long intmax_t;
 #endif

 #ifndef HAVE_UINTMAX_T
 typedef unsigned long long uintmax_t;
 #endif

 #ifndef HAVE_U_CHAR
 typedef unsigned char u_char;
 # define HAVE_U_CHAR
 #endif /* HAVE_U_CHAR */

 #ifndef ULLONG_MAX
 # define ULLONG_MAX ((unsigned long long)-1)
 #endif

 #ifndef SIZE_T_MAX
 #define SIZE_T_MAX ULONG_MAX
 #endif /* SIZE_T_MAX */

 #ifndef HAVE_SIZE_T
 typedef unsigned int size_t;
 # define HAVE_SIZE_T
 # define SIZE_T_MAX UINT_MAX
 #endif /* HAVE_SIZE_T */

 #ifndef SIZE_MAX
 #define SIZE_MAX SIZE_T_MAX
 #endif

 #ifndef HAVE_SSIZE_T
 typedef int ssize_t;
 # define HAVE_SSIZE_T
 #endif /* HAVE_SSIZE_T */

 #ifndef HAVE_CLOCK_T
 typedef long clock_t;
 # define HAVE_CLOCK_T
 #endif /* HAVE_CLOCK_T */

 #ifndef HAVE_SA_FAMILY_T
 typedef int sa_family_t;
 # define HAVE_SA_FAMILY_T
 #endif /* HAVE_SA_FAMILY_T */

 #ifndef HAVE_PID_T
 typedef int pid_t;
 # define HAVE_PID_T
 #endif /* HAVE_PID_T */

 #ifndef HAVE_SIG_ATOMIC_T
 typedef int sig_atomic_t;
 # define HAVE_SIG_ATOMIC_T
 #endif /* HAVE_SIG_ATOMIC_T */

 #ifndef HAVE_MODE_T
 typedef int mode_t;
 # define HAVE_MODE_T
 #endif /* HAVE_MODE_T */

 #if !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE___SS_FAMILY_IN_SS)
 # define ss_family __ss_family
 #endif /* !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE_SA_FAMILY_IN_SS) */

 #ifndef HAVE_SYS_UN_H
 struct	sockaddr_un {
 	short	sun_family;		/* AF_UNIX */
 	char	sun_path[108];		/* path name (gag) */
 };
 #endif /* HAVE_SYS_UN_H */

 #ifndef HAVE_IN_ADDR_T
 typedef u_int32_t	in_addr_t;
 #endif
 #ifndef HAVE_IN_PORT_T
 typedef u_int16_t	in_port_t;
 #endif

 #if defined(BROKEN_SYS_TERMIO_H) && !defined(_STRUCT_WINSIZE)
 #define _STRUCT_WINSIZE
 struct winsize {
       unsigned short ws_row;          /* rows, in characters */
       unsigned short ws_col;          /* columns, in character */
       unsigned short ws_xpixel;       /* horizontal size, pixels */
       unsigned short ws_ypixel;       /* vertical size, pixels */
 };
 #endif

 /* bits needed for select that may not be in the system headers */
 #ifndef HAVE_FD_MASK
  typedef unsigned long int	fd_mask;
 #endif

 #if defined(HAVE_DECL_NFDBITS) && HAVE_DECL_NFDBITS == 0
 # define	NFDBITS (8 * sizeof(unsigned long))
 #endif

 #if defined(HAVE_DECL_HOWMANY) && HAVE_DECL_HOWMANY == 0
 # define howmany(x,y)	(((x)+((y)-1))/(y))
 #endif

 /* Paths */

 #ifndef _PATH_BSHELL
 # define _PATH_BSHELL "/bin/sh"
 #endif

 #ifdef USER_PATH
 # ifdef _PATH_STDPATH
 #  undef _PATH_STDPATH
 # endif
 # define _PATH_STDPATH USER_PATH
 #endif

 #ifndef _PATH_STDPATH
 # define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
 #endif

 #ifndef SUPERUSER_PATH
 # define SUPERUSER_PATH	_PATH_STDPATH
 #endif

 #ifndef _PATH_DEVNULL
 # define _PATH_DEVNULL "/dev/null"
 #endif

 /* user may have set a different path */
 #if defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY)
 # undef _PATH_MAILDIR
 #endif /* defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY) */

 #ifdef MAIL_DIRECTORY
 # define _PATH_MAILDIR MAIL_DIRECTORY
 #endif

 #ifndef _PATH_NOLOGIN
 # define _PATH_NOLOGIN "/etc/nologin"
 #endif

 /* Define this to be the path of the xauth program. */
 #ifdef XAUTH_PATH
 #define _PATH_XAUTH XAUTH_PATH
 #endif /* XAUTH_PATH */

 /* derived from XF4/xc/lib/dps/Xlibnet.h */
 #ifndef X_UNIX_PATH
 #  ifdef __hpux
 #    define X_UNIX_PATH "/var/spool/sockets/X11/%u"
 #  else
 #    define X_UNIX_PATH "/tmp/.X11-unix/X%u"
 #  endif
 #endif /* X_UNIX_PATH */
 #define _PATH_UNIX_X X_UNIX_PATH

 #ifndef _PATH_TTY
 # define _PATH_TTY "/dev/tty"
 #endif

 /* Macros */

 #if defined(HAVE_LOGIN_GETCAPBOOL) && defined(HAVE_LOGIN_CAP_H)
 # define HAVE_LOGIN_CAP
 #endif

 #ifndef MAX
 # define MAX(a,b) (((a)>(b))?(a):(b))
 # define MIN(a,b) (((a)<(b))?(a):(b))
 #endif

 #ifndef roundup
 # define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
 #endif

 #ifndef timersub
 #define timersub(a, b, result)					\
    do {								\
       (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;		\
       (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;		\
       if ((result)->tv_usec < 0) {				\
 	 --(result)->tv_sec;					\
 	 (result)->tv_usec += 1000000;				\
       }								\
    } while (0)
 #endif

 #ifndef TIMEVAL_TO_TIMESPEC
 #define	TIMEVAL_TO_TIMESPEC(tv, ts) {					\
 	(ts)->tv_sec = (tv)->tv_sec;					\
 	(ts)->tv_nsec = (tv)->tv_usec * 1000;				\
 }
 #endif

 #ifndef TIMESPEC_TO_TIMEVAL
 #define	TIMESPEC_TO_TIMEVAL(tv, ts) {					\
 	(tv)->tv_sec = (ts)->tv_sec;					\
 	(tv)->tv_usec = (ts)->tv_nsec / 1000;				\
 }
 #endif

 #ifndef __P
 # define __P(x) x
 #endif

 #if !defined(IN6_IS_ADDR_V4MAPPED)
 # define IN6_IS_ADDR_V4MAPPED(a) \
 	((((u_int32_t *) (a))[0] == 0) && (((u_int32_t *) (a))[1] == 0) && \
 	 (((u_int32_t *) (a))[2] == htonl (0xffff)))
 #endif /* !defined(IN6_IS_ADDR_V4MAPPED) */

 #if !defined(__GNUC__) || (__GNUC__ < 2)
 # define __attribute__(x)
 #endif /* !defined(__GNUC__) || (__GNUC__ < 2) */

 #if !defined(HAVE_ATTRIBUTE__SENTINEL__) && !defined(__sentinel__)
 # define __sentinel__
 #endif

 #if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__bounded__)
 # define __bounded__(x, y, z)
 #endif

 #if !defined(HAVE_ATTRIBUTE__NONNULL__) && !defined(__nonnull__)
 # define __nonnull__(x)
 #endif

 #ifndef OSSH_ALIGNBYTES
 #define OSSH_ALIGNBYTES	(sizeof(int) - 1)
 #endif
 #ifndef __CMSG_ALIGN
 #define	__CMSG_ALIGN(p) (((u_int)(p) + OSSH_ALIGNBYTES) &~ OSSH_ALIGNBYTES)
 #endif

 /* Length of the contents of a control message of length len */
 #ifndef CMSG_LEN
 #define	CMSG_LEN(len)	(__CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
 #endif

 /* Length of the space taken up by a padded control message of length len */
 #ifndef CMSG_SPACE
 #define	CMSG_SPACE(len)	(__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(len))
 #endif

 /* given pointer to struct cmsghdr, return pointer to data */
 #ifndef CMSG_DATA
 #define CMSG_DATA(cmsg) ((u_char *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
 #endif /* CMSG_DATA */

 /*
  * RFC 2292 requires to check msg_controllen, in case that the kernel returns
  * an empty list for some reasons.
  */
 #ifndef CMSG_FIRSTHDR
 #define CMSG_FIRSTHDR(mhdr) \
 	((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
 	 (struct cmsghdr *)(mhdr)->msg_control : \
 	 (struct cmsghdr *)NULL)
 #endif /* CMSG_FIRSTHDR */

 #if defined(HAVE_DECL_OFFSETOF) && HAVE_DECL_OFFSETOF == 0
 # define offsetof(type, member) ((size_t) &((type *)0)->member)
 #endif

 /* Set up BSD-style BYTE_ORDER definition if it isn't there already */
 /* XXX: doesn't try to cope with strange byte orders (PDP_ENDIAN) */
 #ifndef BYTE_ORDER
 # ifndef LITTLE_ENDIAN
 #  define LITTLE_ENDIAN  1234
 # endif /* LITTLE_ENDIAN */
 # ifndef BIG_ENDIAN
 #  define BIG_ENDIAN     4321
 # endif /* BIG_ENDIAN */
 # ifdef WORDS_BIGENDIAN
 #  define BYTE_ORDER BIG_ENDIAN
 # else /* WORDS_BIGENDIAN */
 #  define BYTE_ORDER LITTLE_ENDIAN
 # endif /* WORDS_BIGENDIAN */
 #endif /* BYTE_ORDER */

 /* Function replacement / compatibility hacks */

 #if !defined(HAVE_GETADDRINFO) && (defined(HAVE_OGETADDRINFO) || defined(HAVE_NGETADDRINFO))
 # define HAVE_GETADDRINFO
 #endif

 #ifndef HAVE_GETOPT_OPTRESET
 # undef getopt
 # undef opterr
 # undef optind
 # undef optopt
 # undef optreset
 # undef optarg
 # define getopt(ac, av, o)  BSDgetopt(ac, av, o)
 # define opterr             BSDopterr
 # define optind             BSDoptind
 # define optopt             BSDoptopt
 # define optreset           BSDoptreset
 # define optarg             BSDoptarg
 #endif

 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_GETADDRINFO)
 # undef HAVE_GETADDRINFO
 #endif
 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_FREEADDRINFO)
 # undef HAVE_FREEADDRINFO
 #endif
 #if defined(BROKEN_GETADDRINFO) && defined(HAVE_GAI_STRERROR)
 # undef HAVE_GAI_STRERROR
 #endif

 #if defined(HAVE_GETADDRINFO)
 # if defined(HAVE_DECL_AI_NUMERICSERV) && HAVE_DECL_AI_NUMERICSERV == 0
 #   define AI_NUMERICSERV	0
 # endif
 #endif

 #if defined(BROKEN_UPDWTMPX) && defined(HAVE_UPDWTMPX)
 # undef HAVE_UPDWTMPX
 #endif

 #if defined(BROKEN_SHADOW_EXPIRE) && defined(HAS_SHADOW_EXPIRE)
 # undef HAS_SHADOW_EXPIRE
 #endif

 #if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT) && \
     defined(SYSLOG_R_SAFE_IN_SIGHAND)
 # define DO_LOG_SAFE_IN_SIGHAND
 #endif

 #if !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY)
 # define memmove(s1, s2, n) bcopy((s2), (s1), (n))
 #endif /* !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY) */

 #ifndef GETPGRP_VOID
 # include <unistd.h>
 # define getpgrp() getpgrp(0)
 #endif

 #ifdef USE_BSM_AUDIT
 # define SSH_AUDIT_EVENTS
 # define CUSTOM_SSH_AUDIT_EVENTS
 #endif

 #ifdef USE_LINUX_AUDIT
 # define SSH_AUDIT_EVENTS
 # define CUSTOM_SSH_AUDIT_EVENTS
 #endif

 #if !defined(HAVE___func__) && defined(HAVE___FUNCTION__)
 #  define __func__ __FUNCTION__
 #elif !defined(HAVE___func__)
 #  define __func__ ""
 #endif

 #if defined(KRB5) && !defined(HEIMDAL)
 #  define krb5_get_err_text(context,code) error_message(code)
 #endif

 #if defined(SKEYCHALLENGE_4ARG)
 # define _compat_skeychallenge(a,b,c,d) skeychallenge(a,b,c,d)
 #else
 # define _compat_skeychallenge(a,b,c,d) skeychallenge(a,b,c)
 #endif

 /* Maximum number of file descriptors available */
 #ifdef HAVE_SYSCONF
 # define SSH_SYSFDMAX sysconf(_SC_OPEN_MAX)
 #else
 # define SSH_SYSFDMAX 10000
 #endif

 #ifdef FSID_HAS_VAL
 /* encode f_fsid into a 64 bit value  */
 #define FSID_TO_ULONG(f) \
 	((((u_int64_t)(f).val[0] & 0xffffffffUL) << 32) | \
 	    ((f).val[1] & 0xffffffffUL))
 #elif defined(FSID_HAS___VAL)
 #define FSID_TO_ULONG(f) \
 	((((u_int64_t)(f).__val[0] & 0xffffffffUL) << 32) | \
 	    ((f).__val[1] & 0xffffffffUL))
 #else
 # define FSID_TO_ULONG(f) ((f))
 #endif

 #if defined(__Lynx__)
  /*
   * LynxOS defines these in param.h which we do not want to include since
   * it will also pull in a bunch of kernel definitions.
   */
 # define ALIGNBYTES (sizeof(int) - 1)
 # define ALIGN(p) (((unsigned)p + ALIGNBYTES) & ~ALIGNBYTES)
   /* Missing prototypes on LynxOS */
   int snprintf (char *, size_t, const char *, ...);
   int mkstemp (char *);
   char *crypt (const char *, const char *);
   int seteuid (uid_t);
   int setegid (gid_t);
   char *mkdtemp (char *);
   int rresvport_af (int *, sa_family_t);
   int innetgr (const char *, const char *, const char *, const char *);
 #endif

 /*
  * Define this to use pipes instead of socketpairs for communicating with the
  * client program.  Socketpairs do not seem to work on all systems.
  *
  * configure.ac sets this for a few OS's which are known to have problems
  * but you may need to set it yourself
  */
 /* #define USE_PIPES 1 */

 /**
  ** login recorder definitions
  **/

 /* FIXME: put default paths back in */
 #ifndef UTMP_FILE
 #  ifdef _PATH_UTMP
 #    define UTMP_FILE _PATH_UTMP
 #  else
 #    ifdef CONF_UTMP_FILE
 #      define UTMP_FILE CONF_UTMP_FILE
 #    endif
 #  endif
 #endif
 #ifndef WTMP_FILE
 #  ifdef _PATH_WTMP
 #    define WTMP_FILE _PATH_WTMP
 #  else
 #    ifdef CONF_WTMP_FILE
 #      define WTMP_FILE CONF_WTMP_FILE
 #    endif
 #  endif
 #endif
 /* pick up the user's location for lastlog if given */
 #ifndef LASTLOG_FILE
 #  ifdef _PATH_LASTLOG
 #    define LASTLOG_FILE _PATH_LASTLOG
 #  else
 #    ifdef CONF_LASTLOG_FILE
 #      define LASTLOG_FILE CONF_LASTLOG_FILE
 #    endif
 #  endif
 #endif

 #if defined(HAVE_SHADOW_H) && !defined(DISABLE_SHADOW)
 # define USE_SHADOW
 #endif

 /* The login() library function in libutil is first choice */
 #if defined(HAVE_LOGIN) && !defined(DISABLE_LOGIN)
 #  define USE_LOGIN

 #else
 /* Simply select your favourite login types. */
 /* Can't do if-else because some systems use several... <sigh> */
 #  if !defined(DISABLE_UTMPX)
 #    define USE_UTMPX
 #  endif
 #  if defined(UTMP_FILE) && !defined(DISABLE_UTMP)
 #    define USE_UTMP
 #  endif
 #  if defined(WTMPX_FILE) && !defined(DISABLE_WTMPX)
 #    define USE_WTMPX
 #  endif
 #  if defined(WTMP_FILE) && !defined(DISABLE_WTMP)
 #    define USE_WTMP
 #  endif

 #endif

 #ifndef UT_LINESIZE
 # define UT_LINESIZE 8
 #endif

 /* I hope that the presence of LASTLOG_FILE is enough to detect this */
 #if defined(LASTLOG_FILE) && !defined(DISABLE_LASTLOG)
 #  define USE_LASTLOG
 #endif

 #ifdef HAVE_OSF_SIA
 # ifdef USE_SHADOW
 #  undef USE_SHADOW
 # endif
 # define CUSTOM_SYS_AUTH_PASSWD 1
 #endif

 #if defined(HAVE_LIBIAF) && defined(HAVE_SET_ID) && !defined(HAVE_SECUREWARE)
 # define CUSTOM_SYS_AUTH_PASSWD 1
 #endif
 #if defined(HAVE_LIBIAF) && defined(HAVE_SET_ID) && !defined(BROKEN_LIBIAF)
 # define USE_LIBIAF
 #endif

 /* HP-UX 11.11 */
 #ifdef BTMP_FILE
 # define _PATH_BTMP BTMP_FILE
 #endif

 #if defined(USE_BTMP) && defined(_PATH_BTMP)
 # define CUSTOM_FAILED_LOGIN
 #endif

 /** end of login recorder definitions */

 #ifdef BROKEN_GETGROUPS
 # define getgroups(a,b) ((a)==0 && (b)==NULL ? NGROUPS_MAX : getgroups((a),(b)))
 #endif

 #if defined(HAVE_MMAP) && defined(BROKEN_MMAP)
 # undef HAVE_MMAP
 #endif

 #ifndef IOV_MAX
 # if defined(_XOPEN_IOV_MAX)
 #  define	IOV_MAX		_XOPEN_IOV_MAX
 # elif defined(DEF_IOV_MAX)
 #  define	IOV_MAX		DEF_IOV_MAX
 # else
 #  define	IOV_MAX		16
 # endif
 #endif

 #ifndef EWOULDBLOCK
 # define EWOULDBLOCK EAGAIN
 #endif

 #ifndef INET6_ADDRSTRLEN	/* for non IPv6 machines */
 #define INET6_ADDRSTRLEN 46
 #endif

 #ifndef SSH_IOBUFSZ
 # define SSH_IOBUFSZ 8192
 #endif

 /*
  * Platforms that have arc4random_uniform() and not arc4random_stir()
  * shouldn't need the latter.
  */
 #if defined(HAVE_ARC4RANDOM) && defined(HAVE_ARC4RANDOM_UNIFORM) && \
     !defined(HAVE_ARC4RANDOM_STIR)
 # define arc4random_stir()
 #endif

 #ifndef HAVE_VA_COPY
 # ifdef HAVE___VA_COPY
 #  define va_copy(dest, src) __va_copy(dest, src)
 # else
 #  define va_copy(dest, src) (dest) = (src)
 # endif
 #endif

 #ifndef __predict_true
 # if defined(__GNUC__) && \
      ((__GNUC__ > (2)) || (__GNUC__ == (2) && __GNUC_MINOR__ >= (96)))
 #  define __predict_true(exp)     __builtin_expect(((exp) != 0), 1)
 #  define __predict_false(exp)    __builtin_expect(((exp) != 0), 0)
 # else
 #  define __predict_true(exp)     ((exp) != 0)
 #  define __predict_false(exp)    ((exp) != 0)
 # endif /* gcc version */
 #endif /* __predict_true */

 #endif /* _DEFINES_H */
	/*
	* Copyright (c) 1999-2003 Damien Miller. 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.
	*
	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
	*/

	#ifndef _DEFINES_H
	#define _DEFINES_H

	/* $Id: defines.h,v 1.183 2014/09/02 19:33:26 djm Exp $ */


	/* Constants */

	#if defined(HAVE_DECL_SHUT_RD) && HAVE_DECL_SHUT_RD == 0
	enum
	{
	SHUT_RD = 0, /* No more receptions. */
	SHUT_WR, /* No more transmissions. */
	SHUT_RDWR /* No more receptions or transmissions. */
	};
	# define SHUT_RD SHUT_RD
	# define SHUT_WR SHUT_WR
	# define SHUT_RDWR SHUT_RDWR
	#endif

	/*
	* Definitions for IP type of service (ip_tos)
	*/
	#include <netinet/in_systm.h>
	#include <netinet/ip.h>
	#ifndef IPTOS_LOWDELAY
	# define IPTOS_LOWDELAY 0x10
	# define IPTOS_THROUGHPUT 0x08
	# define IPTOS_RELIABILITY 0x04
	# define IPTOS_LOWCOST 0x02
	# define IPTOS_MINCOST IPTOS_LOWCOST
	#endif /* IPTOS_LOWDELAY */

	/*
	* Definitions for DiffServ Codepoints as per RFC2474
	*/
	#ifndef IPTOS_DSCP_AF11
	# define IPTOS_DSCP_AF11 0x28
	# define IPTOS_DSCP_AF12 0x30
	# define IPTOS_DSCP_AF13 0x38
	# define IPTOS_DSCP_AF21 0x48
	# define IPTOS_DSCP_AF22 0x50
	# define IPTOS_DSCP_AF23 0x58
	# define IPTOS_DSCP_AF31 0x68
	# define IPTOS_DSCP_AF32 0x70
	# define IPTOS_DSCP_AF33 0x78
	# define IPTOS_DSCP_AF41 0x88
	# define IPTOS_DSCP_AF42 0x90
	# define IPTOS_DSCP_AF43 0x98
	# define IPTOS_DSCP_EF 0xb8
	#endif /* IPTOS_DSCP_AF11 */
	#ifndef IPTOS_DSCP_CS0
	# define IPTOS_DSCP_CS0 0x00
	# define IPTOS_DSCP_CS1 0x20
	# define IPTOS_DSCP_CS2 0x40
	# define IPTOS_DSCP_CS3 0x60
	# define IPTOS_DSCP_CS4 0x80
	# define IPTOS_DSCP_CS5 0xa0
	# define IPTOS_DSCP_CS6 0xc0
	# define IPTOS_DSCP_CS7 0xe0
	#endif /* IPTOS_DSCP_CS0 */
	#ifndef IPTOS_DSCP_EF
	# define IPTOS_DSCP_EF 0xb8
	#endif /* IPTOS_DSCP_EF */

	#ifndef PATH_MAX
	# ifdef _POSIX_PATH_MAX
	# define PATH_MAX _POSIX_PATH_MAX
	# endif
	#endif

	#ifndef MAXPATHLEN
	# ifdef PATH_MAX
	# define MAXPATHLEN PATH_MAX
	# else /* PATH_MAX */
	# define MAXPATHLEN 64
	/* realpath uses a fixed buffer of size MAXPATHLEN, so force use of ours */
	# ifndef BROKEN_REALPATH
	# define BROKEN_REALPATH 1
	# endif /* BROKEN_REALPATH */
	# endif /* PATH_MAX */
	#endif /* MAXPATHLEN */

	#ifndef HOST_NAME_MAX
	# include "netdb.h" /* for MAXHOSTNAMELEN */
	# if defined(_POSIX_HOST_NAME_MAX)
	# define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
	# elif defined(MAXHOSTNAMELEN)
	# define HOST_NAME_MAX MAXHOSTNAMELEN
	# else
	# define HOST_NAME_MAX 255
	# endif
	#endif /* HOST_NAME_MAX */

	#if defined(HAVE_DECL_MAXSYMLINKS) && HAVE_DECL_MAXSYMLINKS == 0
	# define MAXSYMLINKS 5
	#endif

	#ifndef STDIN_FILENO
	# define STDIN_FILENO 0
	#endif
	#ifndef STDOUT_FILENO
	# define STDOUT_FILENO 1
	#endif
	#ifndef STDERR_FILENO
	# define STDERR_FILENO 2
	#endif

	#ifndef NGROUPS_MAX /* Disable groupaccess if NGROUP_MAX is not set */
	#ifdef NGROUPS
	#define NGROUPS_MAX NGROUPS
	#else
	#define NGROUPS_MAX 0
	#endif
	#endif

	#if defined(HAVE_DECL_O_NONBLOCK) && HAVE_DECL_O_NONBLOCK == 0
	# define O_NONBLOCK 00004 /* Non Blocking Open */
	#endif

	#ifndef S_IFSOCK
	# define S_IFSOCK 0
	#endif /* S_IFSOCK */

	#ifndef S_ISDIR
	# define S_ISDIR(mode) (((mode) & (_S_IFMT)) == (_S_IFDIR))
	#endif /* S_ISDIR */

	#ifndef S_ISREG
	# define S_ISREG(mode) (((mode) & (_S_IFMT)) == (_S_IFREG))
	#endif /* S_ISREG */

	#ifndef S_ISLNK
	# define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
	#endif /* S_ISLNK */

	#ifndef S_IXUSR
	# define S_IXUSR 0000100 /* execute/search permission, */
	# define S_IXGRP 0000010 /* execute/search permission, */
	# define S_IXOTH 0000001 /* execute/search permission, */
	# define _S_IWUSR 0000200 /* write permission, */
	# define S_IWUSR _S_IWUSR /* write permission, owner */
	# define S_IWGRP 0000020 /* write permission, group */
	# define S_IWOTH 0000002 /* write permission, other */
	# define S_IRUSR 0000400 /* read permission, owner */
	# define S_IRGRP 0000040 /* read permission, group */
	# define S_IROTH 0000004 /* read permission, other */
	# define S_IRWXU 0000700 /* read, write, execute */
	# define S_IRWXG 0000070 /* read, write, execute */
	# define S_IRWXO 0000007 /* read, write, execute */
	#endif /* S_IXUSR */

	#if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
	#define MAP_ANON MAP_ANONYMOUS
	#endif

	#ifndef MAP_FAILED
	# define MAP_FAILED ((void *)-1)
	#endif

	/*
	SCO Open Server 3 has INADDR_LOOPBACK defined in rpc/rpc.h but
	including rpc/rpc.h breaks Solaris 6
	*/
	#ifndef INADDR_LOOPBACK
	#define INADDR_LOOPBACK ((u_long)0x7f000001)
	#endif

	/* Types */

	/* If sys/types.h does not supply intXX_t, supply them ourselves */
	/* (or die trying) */

	#ifndef HAVE_U_INT
	typedef unsigned int u_int;
	#endif

	#ifndef HAVE_INTXX_T
	typedef signed char int8_t;
	# if (SIZEOF_SHORT_INT == 2)
	typedef short int int16_t;
	# else
	# ifdef _UNICOS
	# if (SIZEOF_SHORT_INT == 4)
	typedef short int16_t;
	# else
	typedef long int16_t;
	# endif
	# else
	# error "16 bit int type not found."
	# endif /* _UNICOS */
	# endif
	# if (SIZEOF_INT == 4)
	typedef int int32_t;
	# else
	# ifdef _UNICOS
	typedef long int32_t;
	# else
	# error "32 bit int type not found."
	# endif /* _UNICOS */
	# endif
	#endif

	/* If sys/types.h does not supply u_intXX_t, supply them ourselves */
	#ifndef HAVE_U_INTXX_T
	# ifdef HAVE_UINTXX_T
	typedef uint8_t u_int8_t;
	typedef uint16_t u_int16_t;
	typedef uint32_t u_int32_t;
	# define HAVE_U_INTXX_T 1
	# else
	typedef unsigned char u_int8_t;
	# if (SIZEOF_SHORT_INT == 2)
	typedef unsigned short int u_int16_t;
	# else
	# ifdef _UNICOS
	# if (SIZEOF_SHORT_INT == 4)
	typedef unsigned short u_int16_t;
	# else
	typedef unsigned long u_int16_t;
	# endif
	# else
	# error "16 bit int type not found."
	# endif
	# endif
	# if (SIZEOF_INT == 4)
	typedef unsigned int u_int32_t;
	# else
	# ifdef _UNICOS
	typedef unsigned long u_int32_t;
	# else
	# error "32 bit int type not found."
	# endif
	# endif
	# endif
	#define __BIT_TYPES_DEFINED__
	#endif

	/* 64-bit types */
	#ifndef HAVE_INT64_T
	# if (SIZEOF_LONG_INT == 8)
	typedef long int int64_t;
	# else
	# if (SIZEOF_LONG_LONG_INT == 8)
	typedef long long int int64_t;
	# endif
	# endif
	#endif
	#ifndef HAVE_U_INT64_T
	# if (SIZEOF_LONG_INT == 8)
	typedef unsigned long int u_int64_t;
	# else
	# if (SIZEOF_LONG_LONG_INT == 8)
	typedef unsigned long long int u_int64_t;
	# endif
	# endif
	#endif

	#ifndef HAVE_UINTXX_T
	typedef u_int8_t uint8_t;
	typedef u_int16_t uint16_t;
	typedef u_int32_t uint32_t;
	typedef u_int64_t uint64_t;
	#endif

	#ifndef HAVE_INTMAX_T
	typedef long long intmax_t;
	#endif

	#ifndef HAVE_UINTMAX_T
	typedef unsigned long long uintmax_t;
	#endif

	#ifndef HAVE_U_CHAR
	typedef unsigned char u_char;
	# define HAVE_U_CHAR
	#endif /* HAVE_U_CHAR */

	#ifndef ULLONG_MAX
	# define ULLONG_MAX ((unsigned long long)-1)
	#endif

	#ifndef SIZE_T_MAX
	#define SIZE_T_MAX ULONG_MAX
	#endif /* SIZE_T_MAX */

	#ifndef HAVE_SIZE_T
	typedef unsigned int size_t;
	# define HAVE_SIZE_T
	# define SIZE_T_MAX UINT_MAX
	#endif /* HAVE_SIZE_T */

	#ifndef SIZE_MAX
	#define SIZE_MAX SIZE_T_MAX
	#endif

	#ifndef HAVE_SSIZE_T
	typedef int ssize_t;
	# define HAVE_SSIZE_T
	#endif /* HAVE_SSIZE_T */

	#ifndef HAVE_CLOCK_T
	typedef long clock_t;
	# define HAVE_CLOCK_T
	#endif /* HAVE_CLOCK_T */

	#ifndef HAVE_SA_FAMILY_T
	typedef int sa_family_t;
	# define HAVE_SA_FAMILY_T
	#endif /* HAVE_SA_FAMILY_T */

	#ifndef HAVE_PID_T
	typedef int pid_t;
	# define HAVE_PID_T
	#endif /* HAVE_PID_T */

	#ifndef HAVE_SIG_ATOMIC_T
	typedef int sig_atomic_t;
	# define HAVE_SIG_ATOMIC_T
	#endif /* HAVE_SIG_ATOMIC_T */

	#ifndef HAVE_MODE_T
	typedef int mode_t;
	# define HAVE_MODE_T
	#endif /* HAVE_MODE_T */

	#if !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE___SS_FAMILY_IN_SS)
	# define ss_family __ss_family
	#endif /* !defined(HAVE_SS_FAMILY_IN_SS) && defined(HAVE_SA_FAMILY_IN_SS) */

	#ifndef HAVE_SYS_UN_H
	struct sockaddr_un {
	short sun_family; /* AF_UNIX */
	char sun_path[108]; /* path name (gag) */
	};
	#endif /* HAVE_SYS_UN_H */

	#ifndef HAVE_IN_ADDR_T
	typedef u_int32_t in_addr_t;
	#endif
	#ifndef HAVE_IN_PORT_T
	typedef u_int16_t in_port_t;
	#endif

	#if defined(BROKEN_SYS_TERMIO_H) && !defined(_STRUCT_WINSIZE)
	#define _STRUCT_WINSIZE
	struct winsize {
	unsigned short ws_row; /* rows, in characters */
	unsigned short ws_col; /* columns, in character */
	unsigned short ws_xpixel; /* horizontal size, pixels */
	unsigned short ws_ypixel; /* vertical size, pixels */
	};
	#endif

	/* bits needed for select that may not be in the system headers */
	#ifndef HAVE_FD_MASK
	typedef unsigned long int fd_mask;
	#endif

	#if defined(HAVE_DECL_NFDBITS) && HAVE_DECL_NFDBITS == 0
	# define NFDBITS (8 * sizeof(unsigned long))
	#endif

	#if defined(HAVE_DECL_HOWMANY) && HAVE_DECL_HOWMANY == 0
	# define howmany(x,y) (((x)+((y)-1))/(y))
	#endif

	/* Paths */

	#ifndef _PATH_BSHELL
	# define _PATH_BSHELL "/bin/sh"
	#endif

	#ifdef USER_PATH
	# ifdef _PATH_STDPATH
	# undef _PATH_STDPATH
	# endif
	# define _PATH_STDPATH USER_PATH
	#endif

	#ifndef _PATH_STDPATH
	# define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
	#endif

	#ifndef SUPERUSER_PATH
	# define SUPERUSER_PATH _PATH_STDPATH
	#endif

	#ifndef _PATH_DEVNULL
	# define _PATH_DEVNULL "/dev/null"
	#endif

	/* user may have set a different path */
	#if defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY)
	# undef _PATH_MAILDIR
	#endif /* defined(_PATH_MAILDIR) && defined(MAIL_DIRECTORY) */

	#ifdef MAIL_DIRECTORY
	# define _PATH_MAILDIR MAIL_DIRECTORY
	#endif

	#ifndef _PATH_NOLOGIN
	# define _PATH_NOLOGIN "/etc/nologin"
	#endif

	/* Define this to be the path of the xauth program. */
	#ifdef XAUTH_PATH
	#define _PATH_XAUTH XAUTH_PATH
	#endif /* XAUTH_PATH */

	/* derived from XF4/xc/lib/dps/Xlibnet.h */
	#ifndef X_UNIX_PATH
	# ifdef __hpux
	# define X_UNIX_PATH "/var/spool/sockets/X11/%u"
	# else
	# define X_UNIX_PATH "/tmp/.X11-unix/X%u"
	# endif
	#endif /* X_UNIX_PATH */
	#define _PATH_UNIX_X X_UNIX_PATH

	#ifndef _PATH_TTY
	# define _PATH_TTY "/dev/tty"
	#endif

	/* Macros */

	#if defined(HAVE_LOGIN_GETCAPBOOL) && defined(HAVE_LOGIN_CAP_H)
	# define HAVE_LOGIN_CAP
	#endif

	#ifndef MAX
	# define MAX(a,b) (((a)>(b))?(a):(b))
	# define MIN(a,b) (((a)<(b))?(a):(b))
	#endif

	#ifndef roundup
	# define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
	#endif

	#ifndef timersub
	#define timersub(a, b, result) \
	do { \
	(result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
	(result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
	if ((result)->tv_usec < 0) { \
	--(result)->tv_sec; \
	(result)->tv_usec += 1000000; \
	} \
	} while (0)
	#endif

	#ifndef TIMEVAL_TO_TIMESPEC
	#define TIMEVAL_TO_TIMESPEC(tv, ts) { \
	(ts)->tv_sec = (tv)->tv_sec; \
	(ts)->tv_nsec = (tv)->tv_usec * 1000; \
	}
	#endif

	#ifndef TIMESPEC_TO_TIMEVAL
	#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
	(tv)->tv_sec = (ts)->tv_sec; \
	(tv)->tv_usec = (ts)->tv_nsec / 1000; \
	}
	#endif

	#ifndef __P
	# define __P(x) x
	#endif

	#if !defined(IN6_IS_ADDR_V4MAPPED)
	# define IN6_IS_ADDR_V4MAPPED(a) \
	((((u_int32_t ) (a))[0] == 0) && (((u_int32_t ) (a))[1] == 0) && \
	(((u_int32_t *) (a))[2] == htonl (0xffff)))
	#endif /* !defined(IN6_IS_ADDR_V4MAPPED) */

	#if !defined(__GNUC__) \|\| (__GNUC__ < 2)
	# define __attribute__(x)
	#endif /* !defined(__GNUC__) \|\| (__GNUC__ < 2) */

	#if !defined(HAVE_ATTRIBUTE__SENTINEL__) && !defined(__sentinel__)
	# define __sentinel__
	#endif

	#if !defined(HAVE_ATTRIBUTE__BOUNDED__) && !defined(__bounded__)
	# define __bounded__(x, y, z)
	#endif

	#if !defined(HAVE_ATTRIBUTE__NONNULL__) && !defined(__nonnull__)
	# define __nonnull__(x)
	#endif

	#ifndef OSSH_ALIGNBYTES
	#define OSSH_ALIGNBYTES (sizeof(int) - 1)
	#endif
	#ifndef __CMSG_ALIGN
	#define __CMSG_ALIGN(p) (((u_int)(p) + OSSH_ALIGNBYTES) &~ OSSH_ALIGNBYTES)
	#endif

	/* Length of the contents of a control message of length len */
	#ifndef CMSG_LEN
	#define CMSG_LEN(len) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
	#endif

	/* Length of the space taken up by a padded control message of length len */
	#ifndef CMSG_SPACE
	#define CMSG_SPACE(len) (__CMSG_ALIGN(sizeof(struct cmsghdr)) + __CMSG_ALIGN(len))
	#endif

	/* given pointer to struct cmsghdr, return pointer to data */
	#ifndef CMSG_DATA
	#define CMSG_DATA(cmsg) ((u_char *)(cmsg) + __CMSG_ALIGN(sizeof(struct cmsghdr)))
	#endif /* CMSG_DATA */

	/*
	* RFC 2292 requires to check msg_controllen, in case that the kernel returns
	* an empty list for some reasons.
	*/
	#ifndef CMSG_FIRSTHDR
	#define CMSG_FIRSTHDR(mhdr) \
	((mhdr)->msg_controllen >= sizeof(struct cmsghdr) ? \
	(struct cmsghdr *)(mhdr)->msg_control : \
	(struct cmsghdr *)NULL)
	#endif /* CMSG_FIRSTHDR */

	#if defined(HAVE_DECL_OFFSETOF) && HAVE_DECL_OFFSETOF == 0
	# define offsetof(type, member) ((size_t) &((type *)0)->member)
	#endif

	/* Set up BSD-style BYTE_ORDER definition if it isn't there already */
	/* XXX: doesn't try to cope with strange byte orders (PDP_ENDIAN) */
	#ifndef BYTE_ORDER
	# ifndef LITTLE_ENDIAN
	# define LITTLE_ENDIAN 1234
	# endif /* LITTLE_ENDIAN */
	# ifndef BIG_ENDIAN
	# define BIG_ENDIAN 4321
	# endif /* BIG_ENDIAN */
	# ifdef WORDS_BIGENDIAN
	# define BYTE_ORDER BIG_ENDIAN
	# else /* WORDS_BIGENDIAN */
	# define BYTE_ORDER LITTLE_ENDIAN
	# endif /* WORDS_BIGENDIAN */
	#endif /* BYTE_ORDER */

	/* Function replacement / compatibility hacks */

	#if !defined(HAVE_GETADDRINFO) && (defined(HAVE_OGETADDRINFO) \|\| defined(HAVE_NGETADDRINFO))
	# define HAVE_GETADDRINFO
	#endif

	#ifndef HAVE_GETOPT_OPTRESET
	# undef getopt
	# undef opterr
	# undef optind
	# undef optopt
	# undef optreset
	# undef optarg
	# define getopt(ac, av, o) BSDgetopt(ac, av, o)
	# define opterr BSDopterr
	# define optind BSDoptind
	# define optopt BSDoptopt
	# define optreset BSDoptreset
	# define optarg BSDoptarg
	#endif

	#if defined(BROKEN_GETADDRINFO) && defined(HAVE_GETADDRINFO)
	# undef HAVE_GETADDRINFO
	#endif
	#if defined(BROKEN_GETADDRINFO) && defined(HAVE_FREEADDRINFO)
	# undef HAVE_FREEADDRINFO
	#endif
	#if defined(BROKEN_GETADDRINFO) && defined(HAVE_GAI_STRERROR)
	# undef HAVE_GAI_STRERROR
	#endif

	#if defined(HAVE_GETADDRINFO)
	# if defined(HAVE_DECL_AI_NUMERICSERV) && HAVE_DECL_AI_NUMERICSERV == 0
	# define AI_NUMERICSERV 0
	# endif
	#endif

	#if defined(BROKEN_UPDWTMPX) && defined(HAVE_UPDWTMPX)
	# undef HAVE_UPDWTMPX
	#endif

	#if defined(BROKEN_SHADOW_EXPIRE) && defined(HAS_SHADOW_EXPIRE)
	# undef HAS_SHADOW_EXPIRE
	#endif

	#if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT) && \
	defined(SYSLOG_R_SAFE_IN_SIGHAND)
	# define DO_LOG_SAFE_IN_SIGHAND
	#endif

	#if !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY)
	# define memmove(s1, s2, n) bcopy((s2), (s1), (n))
	#endif /* !defined(HAVE_MEMMOVE) && defined(HAVE_BCOPY) */

	#ifndef GETPGRP_VOID
	# include <unistd.h>
	# define getpgrp() getpgrp(0)
	#endif

	#ifdef USE_BSM_AUDIT
	# define SSH_AUDIT_EVENTS
	# define CUSTOM_SSH_AUDIT_EVENTS
	#endif

	#ifdef USE_LINUX_AUDIT
	# define SSH_AUDIT_EVENTS
	# define CUSTOM_SSH_AUDIT_EVENTS
	#endif

	#if !defined(HAVE___func__) && defined(HAVE___FUNCTION__)
	# define __func__ __FUNCTION__
	#elif !defined(HAVE___func__)
	# define __func__ ""
	#endif

	#if defined(KRB5) && !defined(HEIMDAL)
	# define krb5_get_err_text(context,code) error_message(code)
	#endif

	#if defined(SKEYCHALLENGE_4ARG)
	# define _compat_skeychallenge(a,b,c,d) skeychallenge(a,b,c,d)
	#else
	# define _compat_skeychallenge(a,b,c,d) skeychallenge(a,b,c)
	#endif

	/* Maximum number of file descriptors available */
	#ifdef HAVE_SYSCONF
	# define SSH_SYSFDMAX sysconf(_SC_OPEN_MAX)
	#else
	# define SSH_SYSFDMAX 10000
	#endif

	#ifdef FSID_HAS_VAL
	/* encode f_fsid into a 64 bit value */
	#define FSID_TO_ULONG(f) \
	((((u_int64_t)(f).val[0] & 0xffffffffUL) << 32) \| \
	((f).val[1] & 0xffffffffUL))
	#elif defined(FSID_HAS___VAL)
	#define FSID_TO_ULONG(f) \
	((((u_int64_t)(f).__val[0] & 0xffffffffUL) << 32) \| \
	((f).__val[1] & 0xffffffffUL))
	#else
	# define FSID_TO_ULONG(f) ((f))
	#endif

	#if defined(__Lynx__)
	/*
	* LynxOS defines these in param.h which we do not want to include since
	* it will also pull in a bunch of kernel definitions.
	*/
	# define ALIGNBYTES (sizeof(int) - 1)
	# define ALIGN(p) (((unsigned)p + ALIGNBYTES) & ~ALIGNBYTES)
	/* Missing prototypes on LynxOS */
	int snprintf (char , size_t, const char , ...);
	int mkstemp (char *);
	char crypt (const char , const char *);
	int seteuid (uid_t);
	int setegid (gid_t);
	char mkdtemp (char );
	int rresvport_af (int *, sa_family_t);
	int innetgr (const char , const char , const char , const char );
	#endif

	/*
	* Define this to use pipes instead of socketpairs for communicating with the
	* client program. Socketpairs do not seem to work on all systems.
	*
	* configure.ac sets this for a few OS's which are known to have problems
	* but you may need to set it yourself
	*/
	/* #define USE_PIPES 1 */

	/**
	** login recorder definitions
	**/

	/* FIXME: put default paths back in */
	#ifndef UTMP_FILE
	# ifdef _PATH_UTMP
	# define UTMP_FILE _PATH_UTMP
	# else
	# ifdef CONF_UTMP_FILE
	# define UTMP_FILE CONF_UTMP_FILE
	# endif
	# endif
	#endif
	#ifndef WTMP_FILE
	# ifdef _PATH_WTMP
	# define WTMP_FILE _PATH_WTMP
	# else
	# ifdef CONF_WTMP_FILE
	# define WTMP_FILE CONF_WTMP_FILE
	# endif
	# endif
	#endif
	/* pick up the user's location for lastlog if given */
	#ifndef LASTLOG_FILE
	# ifdef _PATH_LASTLOG
	# define LASTLOG_FILE _PATH_LASTLOG
	# else
	# ifdef CONF_LASTLOG_FILE
	# define LASTLOG_FILE CONF_LASTLOG_FILE
	# endif
	# endif
	#endif

	#if defined(HAVE_SHADOW_H) && !defined(DISABLE_SHADOW)
	# define USE_SHADOW
	#endif

	/* The login() library function in libutil is first choice */
	#if defined(HAVE_LOGIN) && !defined(DISABLE_LOGIN)
	# define USE_LOGIN

	#else
	/* Simply select your favourite login types. */
	/* Can't do if-else because some systems use several... <sigh> */
	# if !defined(DISABLE_UTMPX)
	# define USE_UTMPX
	# endif
	# if defined(UTMP_FILE) && !defined(DISABLE_UTMP)
	# define USE_UTMP
	# endif
	# if defined(WTMPX_FILE) && !defined(DISABLE_WTMPX)
	# define USE_WTMPX
	# endif
	# if defined(WTMP_FILE) && !defined(DISABLE_WTMP)
	# define USE_WTMP
	# endif

	#endif

	#ifndef UT_LINESIZE
	# define UT_LINESIZE 8
	#endif

	/* I hope that the presence of LASTLOG_FILE is enough to detect this */
	#if defined(LASTLOG_FILE) && !defined(DISABLE_LASTLOG)
	# define USE_LASTLOG
	#endif

	#ifdef HAVE_OSF_SIA
	# ifdef USE_SHADOW
	# undef USE_SHADOW
	# endif
	# define CUSTOM_SYS_AUTH_PASSWD 1
	#endif

	#if defined(HAVE_LIBIAF) && defined(HAVE_SET_ID) && !defined(HAVE_SECUREWARE)
	# define CUSTOM_SYS_AUTH_PASSWD 1
	#endif
	#if defined(HAVE_LIBIAF) && defined(HAVE_SET_ID) && !defined(BROKEN_LIBIAF)
	# define USE_LIBIAF
	#endif

	/* HP-UX 11.11 */
	#ifdef BTMP_FILE
	# define _PATH_BTMP BTMP_FILE
	#endif

	#if defined(USE_BTMP) && defined(_PATH_BTMP)
	# define CUSTOM_FAILED_LOGIN
	#endif

	/** end of login recorder definitions */

	#ifdef BROKEN_GETGROUPS
	# define getgroups(a,b) ((a)==0 && (b)==NULL ? NGROUPS_MAX : getgroups((a),(b)))
	#endif

	#if defined(HAVE_MMAP) && defined(BROKEN_MMAP)
	# undef HAVE_MMAP
	#endif

	#ifndef IOV_MAX
	# if defined(_XOPEN_IOV_MAX)
	# define IOV_MAX _XOPEN_IOV_MAX
	# elif defined(DEF_IOV_MAX)
	# define IOV_MAX DEF_IOV_MAX
	# else
	# define IOV_MAX 16
	# endif
	#endif

	#ifndef EWOULDBLOCK
	# define EWOULDBLOCK EAGAIN
	#endif

	#ifndef INET6_ADDRSTRLEN /* for non IPv6 machines */
	#define INET6_ADDRSTRLEN 46
	#endif

	#ifndef SSH_IOBUFSZ
	# define SSH_IOBUFSZ 8192
	#endif

	/*
	* Platforms that have arc4random_uniform() and not arc4random_stir()
	* shouldn't need the latter.
	*/
	#if defined(HAVE_ARC4RANDOM) && defined(HAVE_ARC4RANDOM_UNIFORM) && \
	!defined(HAVE_ARC4RANDOM_STIR)
	# define arc4random_stir()
	#endif

	#ifndef HAVE_VA_COPY
	# ifdef HAVE___VA_COPY
	# define va_copy(dest, src) __va_copy(dest, src)
	# else
	# define va_copy(dest, src) (dest) = (src)
	# endif
	#endif

	#ifndef __predict_true
	# if defined(__GNUC__) && \
	((__GNUC__ > (2)) \|\| (__GNUC__ == (2) && __GNUC_MINOR__ >= (96)))
	# define __predict_true(exp) __builtin_expect(((exp) != 0), 1)
	# define __predict_false(exp) __builtin_expect(((exp) != 0), 0)
	# else
	# define __predict_true(exp) ((exp) != 0)
	# define __predict_false(exp) ((exp) != 0)
	# endif /* gcc version */
	#endif /* __predict_true */

	#endif /* _DEFINES_H */