Flatten bind9 vendor work area

13 files changed, 1222 insertions, 0 deletions

diff --git a/lib/isc/unix/include/Makefile.in b/lib/isc/unix/include/Makefile.in
new file mode 100644
index 0000000..78eba44
--- /dev/null
+++ b/lib/isc/unix/include/Makefile.in
@@ -0,0 +1,25 @@
+# Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
+# Copyright (C) 1998-2001  Internet Software Consortium.
+#
+# 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 ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF 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.
+
+# $Id: Makefile.in,v 1.12 2004/03/05 05:11:50 marka Exp $
+
+srcdir =	@srcdir@
+VPATH =		@srcdir@
+top_srcdir =	@top_srcdir@
+
+SUBDIRS =	isc
+TARGETS =
+
+@BIND9_MAKE_RULES@
diff --git a/lib/isc/unix/include/isc/Makefile.in b/lib/isc/unix/include/isc/Makefile.in
new file mode 100644
index 0000000..9599f7c
--- /dev/null
+++ b/lib/isc/unix/include/isc/Makefile.in
@@ -0,0 +1,38 @@
+# Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
+# Copyright (C) 1998-2001  Internet Software Consortium.
+#
+# 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 ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF 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.
+
+# $Id: Makefile.in,v 1.28 2004/03/05 05:11:52 marka Exp $
+
+srcdir =	@srcdir@
+VPATH =		@srcdir@
+top_srcdir =	@top_srcdir@
+
+@BIND9_VERSION@
+
+HEADERS =	dir.h int.h net.h netdb.h offset.h stdtime.h \
+		syslog.h time.h
+
+SUBDIRS =
+TARGETS =
+
+@BIND9_MAKE_RULES@
+
+installdirs:
+	$(SHELL) ${top_srcdir}/mkinstalldirs ${DESTDIR}${includedir}/isc
+
+install:: installdirs
+	for i in ${HEADERS}; do \
+		${INSTALL_DATA} $(srcdir)/$$i ${DESTDIR}${includedir}/isc ; \
+	done
diff --git a/lib/isc/unix/include/isc/dir.h b/lib/isc/unix/include/isc/dir.h
new file mode 100644
index 0000000..cc85706
--- /dev/null
+++ b/lib/isc/unix/include/isc/dir.h
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: dir.h,v 1.17.18.2 2005/04/29 00:17:09 marka Exp $ */
+
+/* Principal Authors: DCL */
+
+#ifndef ISC_DIR_H
+#define ISC_DIR_H 1
+
+/*! \file */
+
+#include <sys/types.h>		/* Required on some systems. */
+#include <dirent.h>
+
+#include <isc/lang.h>
+#include <isc/result.h>
+
+#define ISC_DIR_NAMEMAX 256
+#define ISC_DIR_PATHMAX 1024
+
+/*% Directory Entry */
+typedef struct isc_direntry {
+	/*!
+	 * Ideally, this should be NAME_MAX, but AIX does not define it by
+	 * default and dynamically allocating the space based on pathconf()
+	 * complicates things undesirably, as does adding special conditionals
+	 * just for AIX.  So a comfortably sized buffer is chosen instead.
+	 */
+	char 		name[ISC_DIR_NAMEMAX];
+	unsigned int	length;
+} isc_direntry_t;
+
+/*% Directory */
+typedef struct isc_dir {
+	unsigned int	magic;
+	/*!
+	 * As with isc_direntry_t->name, making this "right" for all systems
+	 * is slightly problematic because AIX does not define PATH_MAX.
+	 */
+	char		dirname[ISC_DIR_PATHMAX];
+	isc_direntry_t	entry;
+	DIR *		handle;
+} isc_dir_t;
+
+ISC_LANG_BEGINDECLS
+
+void
+isc_dir_init(isc_dir_t *dir);
+
+isc_result_t
+isc_dir_open(isc_dir_t *dir, const char *dirname);
+
+isc_result_t
+isc_dir_read(isc_dir_t *dir);
+
+isc_result_t
+isc_dir_reset(isc_dir_t *dir);
+
+void
+isc_dir_close(isc_dir_t *dir);
+
+isc_result_t
+isc_dir_chdir(const char *dirname);
+
+isc_result_t
+isc_dir_chroot(const char *dirname);
+
+isc_result_t
+isc_dir_createunique(char *templet);
+/*!<
+ * Use a templet (such as from isc_file_mktemplate()) to create a uniquely
+ * named, empty directory.  The templet string is modified in place.
+ * If result == ISC_R_SUCCESS, it is the name of the directory that was
+ * created.
+ */
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_DIR_H */
diff --git a/lib/isc/unix/include/isc/int.h b/lib/isc/unix/include/isc/int.h
new file mode 100644
index 0000000..1e1de7b
--- /dev/null
+++ b/lib/isc/unix/include/isc/int.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: int.h,v 1.12.18.2 2005/04/29 00:17:09 marka Exp $ */
+
+#ifndef ISC_INT_H
+#define ISC_INT_H 1
+
+/*! \file */
+
+typedef char				isc_int8_t;
+typedef unsigned char			isc_uint8_t;
+typedef short				isc_int16_t;
+typedef unsigned short			isc_uint16_t;
+typedef int				isc_int32_t;
+typedef unsigned int			isc_uint32_t;
+typedef long long			isc_int64_t;
+typedef unsigned long long		isc_uint64_t;
+
+#define ISC_INT8_MIN	-128
+#define ISC_INT8_MAX	127
+#define ISC_UINT8_MAX	255
+
+#define ISC_INT16_MIN	-32768
+#define ISC_INT16_MAX	32767
+#define ISC_UINT16_MAX	65535
+
+/*%
+ * Note that "int" is 32 bits on all currently supported Unix-like operating
+ * systems, but "long" can be either 32 bits or 64 bits, thus the 32 bit
+ * constants are not qualified with "L".
+ */
+#define ISC_INT32_MIN	-2147483648
+#define ISC_INT32_MAX	2147483647
+#define ISC_UINT32_MAX	4294967295U
+
+#define ISC_INT64_MIN	-9223372036854775808LL
+#define ISC_INT64_MAX	9223372036854775807LL
+#define ISC_UINT64_MAX	18446744073709551615ULL
+
+#endif /* ISC_INT_H */
diff --git a/lib/isc/unix/include/isc/keyboard.h b/lib/isc/unix/include/isc/keyboard.h
new file mode 100644
index 0000000..4b28cc0
--- /dev/null
+++ b/lib/isc/unix/include/isc/keyboard.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: keyboard.h,v 1.7.18.2 2005/04/29 00:17:09 marka Exp $ */
+
+#ifndef ISC_KEYBOARD_H
+#define ISC_KEYBOARD_H 1
+
+/*! \file */
+
+#include <termios.h>
+
+#include <isc/lang.h>
+#include <isc/result.h>
+
+ISC_LANG_BEGINDECLS
+
+typedef struct {
+	int fd;
+	struct termios saved_mode;
+	isc_result_t result;
+} isc_keyboard_t;
+
+isc_result_t
+isc_keyboard_open(isc_keyboard_t *keyboard);
+
+isc_result_t
+isc_keyboard_close(isc_keyboard_t *keyboard, unsigned int sleepseconds);
+
+isc_result_t
+isc_keyboard_getchar(isc_keyboard_t *keyboard, unsigned char *cp);
+
+isc_boolean_t
+isc_keyboard_canceled(isc_keyboard_t *keyboard);
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_KEYBOARD_H */
diff --git a/lib/isc/unix/include/isc/net.h b/lib/isc/unix/include/isc/net.h
new file mode 100644
index 0000000..bdd8c14
--- /dev/null
+++ b/lib/isc/unix/include/isc/net.h
@@ -0,0 +1,348 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2003  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: net.h,v 1.39.18.4 2005/04/27 05:02:37 sra Exp $ */
+
+#ifndef ISC_NET_H
+#define ISC_NET_H 1
+
+/*****
+ ***** Module Info
+ *****/
+
+/*! \file
+ * \brief
+ * Basic Networking Types
+ *
+ * This module is responsible for defining the following basic networking
+ * types:
+ *
+ *\li		struct in_addr
+ *\li		struct in6_addr
+ *\li		struct in6_pktinfo
+ *\li		struct sockaddr
+ *\li		struct sockaddr_in
+ *\li		struct sockaddr_in6
+ *\li		in_port_t
+ *
+ * It ensures that the AF_ and PF_ macros are defined.
+ *
+ * It declares ntoh[sl]() and hton[sl]().
+ *
+ * It declares inet_aton(), inet_ntop(), and inet_pton().
+ *
+ * It ensures that #INADDR_LOOPBACK, #INADDR_ANY, #IN6ADDR_ANY_INIT,
+ * in6addr_any, and in6addr_loopback are available.
+ *
+ * It ensures that IN_MULTICAST() is available to check for multicast
+ * addresses.
+ *
+ * MP:
+ *\li	No impact.
+ *
+ * Reliability:
+ *\li	No anticipated impact.
+ *
+ * Resources:
+ *\li	N/A.
+ *
+ * Security:
+ *\li	No anticipated impact.
+ *
+ * Standards:
+ *\li	BSD Socket API
+ *\li	RFC2553
+ */
+
+/***
+ *** Imports.
+ ***/
+#include <isc/platform.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>		/* Contractual promise. */
+
+#include <net/if.h>
+
+#include <netinet/in.h>		/* Contractual promise. */
+#include <arpa/inet.h>		/* Contractual promise. */
+#ifdef ISC_PLATFORM_NEEDNETINETIN6H
+#include <netinet/in6.h>	/* Required on UnixWare. */
+#endif
+#ifdef ISC_PLATFORM_NEEDNETINET6IN6H
+#include <netinet6/in6.h>	/* Required on BSD/OS for in6_pktinfo. */
+#endif
+
+#ifndef ISC_PLATFORM_HAVEIPV6
+#include <isc/ipv6.h>		/* Contractual promise. */
+#endif
+
+#include <isc/lang.h>
+#include <isc/types.h>
+
+#ifdef ISC_PLATFORM_HAVEINADDR6
+#define in6_addr in_addr6	/*%< Required for pre RFC2133 implementations. */
+#endif
+
+#ifdef ISC_PLATFORM_HAVEIPV6
+#ifndef IN6ADDR_ANY_INIT
+#ifdef s6_addr
+/*%
+ * Required for some pre RFC2133 implementations.
+ * IN6ADDR_ANY_INIT and IN6ADDR_LOOPBACK_INIT were added in
+ * draft-ietf-ipngwg-bsd-api-04.txt or draft-ietf-ipngwg-bsd-api-05.txt.  
+ * If 's6_addr' is defined then assume that there is a union and three
+ * levels otherwise assume two levels required.
+ */
+#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
+#else
+#define IN6ADDR_ANY_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } }
+#endif
+#endif
+
+#ifndef IN6ADDR_LOOPBACK_INIT
+#ifdef s6_addr
+/*% IPv6 address loopback init */
+#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
+#else
+#define IN6ADDR_LOOPBACK_INIT { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } }
+#endif
+#endif
+
+#ifndef IN6_IS_ADDR_V4MAPPED
+/*% Is IPv6 address V4 mapped? */
+#define IN6_IS_ADDR_V4MAPPED(x) \
+	 (memcmp((x)->s6_addr, in6addr_any.s6_addr, 10) == 0 && \
+	  (x)->s6_addr[10] == 0xff && (x)->s6_addr[11] == 0xff)
+#endif
+
+#ifndef IN6_IS_ADDR_V4COMPAT
+/*% Is IPv6 address V4 compatible? */
+#define IN6_IS_ADDR_V4COMPAT(x) \
+	 (memcmp((x)->s6_addr, in6addr_any.s6_addr, 12) == 0 && \
+	 ((x)->s6_addr[12] != 0 || (x)->s6_addr[13] != 0 || \
+	  (x)->s6_addr[14] != 0 || \
+	  ((x)->s6_addr[15] != 0 && (x)->s6_addr[15] != 1)))
+#endif
+
+#ifndef IN6_IS_ADDR_MULTICAST
+/*% Is IPv6 address multicast? */
+#define IN6_IS_ADDR_MULTICAST(a)        ((a)->s6_addr[0] == 0xff)
+#endif
+
+#ifndef IN6_IS_ADDR_LINKLOCAL
+/*% Is IPv6 address linklocal? */
+#define IN6_IS_ADDR_LINKLOCAL(a) \
+	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
+#endif
+
+#ifndef IN6_IS_ADDR_SITELOCAL
+/*% is IPv6 address sitelocal? */
+#define IN6_IS_ADDR_SITELOCAL(a) \
+	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
+#endif
+
+
+#ifndef IN6_IS_ADDR_LOOPBACK
+/*% is IPv6 address loopback? */
+#define IN6_IS_ADDR_LOOPBACK(x) \
+	(memcmp((x)->s6_addr, in6addr_loopback.s6_addr, 16) == 0)
+#endif
+#endif
+
+#ifndef AF_INET6
+/*% IPv6 */
+#define AF_INET6 99
+#endif
+
+#ifndef PF_INET6
+/*% IPv6 */
+#define PF_INET6 AF_INET6
+#endif
+
+#ifndef INADDR_LOOPBACK
+/*% inaddr loopback */
+#define INADDR_LOOPBACK 0x7f000001UL
+#endif
+
+#ifndef ISC_PLATFORM_HAVEIN6PKTINFO
+/*% IPv6 packet info */
+struct in6_pktinfo {
+	struct in6_addr ipi6_addr;    /*%< src/dst IPv6 address */
+	unsigned int    ipi6_ifindex; /*%< send/recv interface index */
+};
+#endif
+
+#if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRANY)
+extern const struct in6_addr isc_net_in6addrany;
+/*%
+ * Cope with a missing in6addr_any and in6addr_loopback.
+ */
+#define in6addr_any isc_net_in6addrany
+#endif
+
+#if defined(ISC_PLATFORM_HAVEIPV6) && defined(ISC_PLATFORM_NEEDIN6ADDRLOOPBACK)
+extern const struct in6_addr isc_net_in6addrloop;
+#define in6addr_loopback isc_net_in6addrloop
+#endif
+
+#ifdef ISC_PLATFORM_FIXIN6ISADDR
+#undef  IN6_IS_ADDR_GEOGRAPHIC
+/*! 
+ * \brief
+ * Fix UnixWare 7.1.1's broken IN6_IS_ADDR_* definitions.
+ */
+#define IN6_IS_ADDR_GEOGRAPHIC(a) (((a)->S6_un.S6_l[0] & 0xE0) == 0x80)
+#undef  IN6_IS_ADDR_IPX
+#define IN6_IS_ADDR_IPX(a)        (((a)->S6_un.S6_l[0] & 0xFE) == 0x04)
+#undef  IN6_IS_ADDR_LINKLOCAL
+#define IN6_IS_ADDR_LINKLOCAL(a)  (((a)->S6_un.S6_l[0] & 0xC0FF) == 0x80FE)
+#undef  IN6_IS_ADDR_MULTICAST
+#define IN6_IS_ADDR_MULTICAST(a)  (((a)->S6_un.S6_l[0] & 0xFF) == 0xFF)
+#undef  IN6_IS_ADDR_NSAP
+#define IN6_IS_ADDR_NSAP(a)       (((a)->S6_un.S6_l[0] & 0xFE) == 0x02)
+#undef  IN6_IS_ADDR_PROVIDER
+#define IN6_IS_ADDR_PROVIDER(a)   (((a)->S6_un.S6_l[0] & 0xE0) == 0x40)
+#undef  IN6_IS_ADDR_SITELOCAL
+#define IN6_IS_ADDR_SITELOCAL(a)  (((a)->S6_un.S6_l[0] & 0xC0FF) == 0xC0FE)
+#endif /* ISC_PLATFORM_FIXIN6ISADDR */
+
+#ifdef ISC_PLATFORM_NEEDPORTT
+/*%
+ * Ensure type in_port_t is defined.
+ */
+typedef isc_uint16_t in_port_t;
+#endif
+
+#ifndef MSG_TRUNC
+/*%
+ * If this system does not have MSG_TRUNC (as returned from recvmsg())
+ * ISC_PLATFORM_RECVOVERFLOW will be defined.  This will enable the MSG_TRUNC
+ * faking code in socket.c.
+ */
+#define ISC_PLATFORM_RECVOVERFLOW
+#endif
+
+/*% IP address. */
+#define ISC__IPADDR(x)	((isc_uint32_t)htonl((isc_uint32_t)(x)))
+
+/*% Is IP address multicast? */
+#define ISC_IPADDR_ISMULTICAST(i) \
+		(((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
+		 == ISC__IPADDR(0xe0000000))
+
+#define ISC_IPADDR_ISEXPERIMENTAL(i) \
+		(((isc_uint32_t)(i) & ISC__IPADDR(0xf0000000)) \
+		 == ISC__IPADDR(0xf0000000))
+
+/***
+ *** Functions.
+ ***/
+
+ISC_LANG_BEGINDECLS
+
+isc_result_t
+isc_net_probeipv4(void);
+/*%<
+ * Check if the system's kernel supports IPv4.
+ *
+ * Returns:
+ *
+ *\li	#ISC_R_SUCCESS		IPv4 is supported.
+ *\li	#ISC_R_NOTFOUND		IPv4 is not supported.
+ *\li	#ISC_R_DISABLED		IPv4 is disabled.
+ *\li	#ISC_R_UNEXPECTED
+ */
+
+isc_result_t
+isc_net_probeipv6(void);
+/*%<
+ * Check if the system's kernel supports IPv6.
+ *
+ * Returns:
+ *
+ *\li	#ISC_R_SUCCESS		IPv6 is supported.
+ *\li	#ISC_R_NOTFOUND		IPv6 is not supported.
+ *\li	#ISC_R_DISABLED		IPv6 is disabled.
+ *\li	#ISC_R_UNEXPECTED
+ */
+
+isc_result_t
+isc_net_probe_ipv6only(void);
+/*%<
+ * Check if the system's kernel supports the IPV6_V6ONLY socket option.
+ *
+ * Returns:
+ *
+ *\li	#ISC_R_SUCCESS		the option is supported for both TCP and UDP.
+ *\li	#ISC_R_NOTFOUND		IPv6 itself or the option is not supported.
+ *\li	#ISC_R_UNEXPECTED
+ */
+
+isc_result_t
+isc_net_probe_ipv6pktinfo(void);
+/*
+ * Check if the system's kernel supports the IPV6_(RECV)PKTINFO socket option
+ * for UDP sockets.
+ *
+ * Returns:
+ *
+ * \li	#ISC_R_SUCCESS		the option is supported.
+ * \li	#ISC_R_NOTFOUND		IPv6 itself or the option is not supported.
+ * \li	#ISC_R_UNEXPECTED
+ */
+
+void
+isc_net_disableipv4(void);
+
+void
+isc_net_disableipv6(void);
+
+void
+isc_net_enableipv4(void);
+
+void
+isc_net_enableipv6(void);
+
+isc_result_t
+isc_net_probeunix(void);
+/*
+ * Returns whether UNIX domain sockets are supported.
+ */
+
+#ifdef ISC_PLATFORM_NEEDNTOP
+const char *
+isc_net_ntop(int af, const void *src, char *dst, size_t size);
+#define inet_ntop isc_net_ntop
+#endif
+
+#ifdef ISC_PLATFORM_NEEDPTON
+int
+isc_net_pton(int af, const char *src, void *dst);
+#undef inet_pton
+#define inet_pton isc_net_pton
+#endif
+
+#ifdef ISC_PLATFORM_NEEDATON
+int
+isc_net_aton(const char *cp, struct in_addr *addr);
+#define inet_aton isc_net_aton
+#endif
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_NET_H */
diff --git a/lib/isc/unix/include/isc/netdb.h b/lib/isc/unix/include/isc/netdb.h
new file mode 100644
index 0000000..428f087
--- /dev/null
+++ b/lib/isc/unix/include/isc/netdb.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: netdb.h,v 1.7.18.2 2005/04/29 00:17:10 marka Exp $ */
+
+#ifndef ISC_NETDB_H
+#define ISC_NETDB_H 1
+
+/*****
+ ***** Module Info
+ *****/
+
+/*! \file
+ * \brief
+ * Portable netdb.h support.
+ *
+ * This module is responsible for defining the get<x>by<y> APIs.
+ *
+ * MP:
+ *\li	No impact.
+ *
+ * Reliability:
+ *\li	No anticipated impact.
+ *
+ * Resources:
+ *\li	N/A.
+ *
+ * Security:
+ *\li	No anticipated impact.
+ *
+ * Standards:
+ *\li	BSD API
+ */
+
+/***
+ *** Imports.
+ ***/
+
+#include <isc/net.h>
+
+#include <netdb.h>
+
+#endif /* ISC_NETDB_H */
diff --git a/lib/isc/unix/include/isc/offset.h b/lib/isc/unix/include/isc/offset.h
new file mode 100644
index 0000000..15fbad4
--- /dev/null
+++ b/lib/isc/unix/include/isc/offset.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: offset.h,v 1.11.18.2 2005/04/29 00:17:10 marka Exp $ */
+
+#ifndef ISC_OFFSET_H
+#define ISC_OFFSET_H 1
+
+/*! \file
+ * \brief
+ * File offsets are operating-system dependent.
+ */
+#include <limits.h>             /* Required for CHAR_BIT. */
+#include <sys/types.h>
+
+typedef off_t isc_offset_t;
+
+/*%
+ * POSIX says "Additionally, blkcnt_t and off_t are extended signed integral
+ * types", so the maximum value is all 1s except for the high bit.
+ * This definition is more complex than it really needs to be because it was
+ * crafted to keep both the SunOS 5.6 and the HP/UX 11 compilers quiet about
+ * integer overflow.  For example, though this is equivalent to just left
+ * shifting 1 to the high bit and then inverting the bits, the SunOS compiler
+ * is unhappy about shifting a positive "1" to negative in a signed integer.
+ */
+#define ISC_OFFSET_MAXIMUM \
+	(~(((off_t)-1 >> (sizeof(off_t) * CHAR_BIT - 1)) \
+		      << (sizeof(off_t) * CHAR_BIT - 1)))
+
+#endif /* ISC_OFFSET_H */
diff --git a/lib/isc/unix/include/isc/stat.h b/lib/isc/unix/include/isc/stat.h
new file mode 100644
index 0000000..d1b2489
--- /dev/null
+++ b/lib/isc/unix/include/isc/stat.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: stat.h,v 1.2.18.1 2004/08/19 04:42:54 marka Exp $ */
+
+#ifndef ISC_STAT_H
+#define ISC_STAT_H 1
+
+/*****
+ ***** Module Info
+ *****/
+
+/*
+ * Portable netdb.h support.
+ *
+ * This module is responsible for defining S_IS??? macros.
+ *
+ * MP:
+ *	No impact.
+ *
+ * Reliability:
+ *	No anticipated impact.
+ *
+ * Resources:
+ *	N/A.
+ *
+ * Security:
+ *	No anticipated impact.
+ *
+ */
+
+/***
+ *** Imports.
+ ***/
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#endif /* ISC_STAT_H */
diff --git a/lib/isc/unix/include/isc/stdtime.h b/lib/isc/unix/include/isc/stdtime.h
new file mode 100644
index 0000000..24a91d2
--- /dev/null
+++ b/lib/isc/unix/include/isc/stdtime.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: stdtime.h,v 1.9.18.3 2005/06/04 06:23:45 jinmei Exp $ */
+
+#ifndef ISC_STDTIME_H
+#define ISC_STDTIME_H 1
+
+/*! \file */
+
+#include <isc/lang.h>
+#include <isc/int.h>
+
+/*%
+ * It's public information that 'isc_stdtime_t' is an unsigned integral type.
+ * Applications that want maximum portability should not assume anything
+ * about its size.
+ */
+typedef isc_uint32_t isc_stdtime_t;
+/*
+ * isc_stdtime32_t is a 32-bit version of isc_stdtime_t.  A variable of this
+ * type should only be used as an opaque integer (e.g.,) to compare two
+ * time values.
+ */
+typedef isc_uint32_t isc_stdtime32_t;
+
+ISC_LANG_BEGINDECLS
+/* */
+void
+isc_stdtime_get(isc_stdtime_t *t);
+/*%<
+ * Set 't' to the number of seconds since 00:00:00 UTC, January 1, 1970.
+ *
+ * Requires:
+ *
+ *\li	't' is a valid pointer.
+ */
+
+#define isc_stdtime_convert32(t, t32p) (*(t32p) = t)
+/*
+ * Convert the standard time to its 32-bit version.
+ */
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_STDTIME_H */
diff --git a/lib/isc/unix/include/isc/strerror.h b/lib/isc/unix/include/isc/strerror.h
new file mode 100644
index 0000000..fb2e8a4
--- /dev/null
+++ b/lib/isc/unix/include/isc/strerror.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: strerror.h,v 1.4.18.2 2005/04/29 00:17:10 marka Exp $ */
+
+#ifndef ISC_STRERROR_H
+#define ISC_STRERROR_H
+
+/*! \file */
+
+#include <sys/types.h>
+
+#include <isc/lang.h>
+
+ISC_LANG_BEGINDECLS
+
+/*% String Error Size */
+#define ISC_STRERRORSIZE 128
+
+/*%
+ * Provide a thread safe wrapper to strerrror().
+ *
+ * Requires:
+ * 	'buf' to be non NULL.
+ */
+void
+isc__strerror(int num, char *buf, size_t bufsize);
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_STRERROR_H */
diff --git a/lib/isc/unix/include/isc/syslog.h b/lib/isc/unix/include/isc/syslog.h
new file mode 100644
index 0000000..08adca1
--- /dev/null
+++ b/lib/isc/unix/include/isc/syslog.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: syslog.h,v 1.3.18.2 2005/04/29 00:17:10 marka Exp $ */
+
+#ifndef ISC_SYSLOG_H
+#define ISC_SYSLOG_H 1
+
+/*! \file */
+
+#include <isc/lang.h>
+#include <isc/types.h>
+
+ISC_LANG_BEGINDECLS
+
+isc_result_t
+isc_syslog_facilityfromstring(const char *str, int *facilityp);
+/*%<
+ * Convert 'str' to the appropriate syslog facility constant.
+ *
+ * Requires:
+ *
+ *\li	'str' is not NULL
+ *\li	'facilityp' is not NULL
+ *
+ * Returns:
+ * \li	#ISC_R_SUCCESS
+ * \li	#ISC_R_NOTFOUND
+ */
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_SYSLOG_H */
diff --git a/lib/isc/unix/include/isc/time.h b/lib/isc/unix/include/isc/time.h
new file mode 100644
index 0000000..6579439
--- /dev/null
+++ b/lib/isc/unix/include/isc/time.h
@@ -0,0 +1,304 @@
+/*
+ * Copyright (C) 2004, 2005  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1998-2001  Internet Software Consortium.
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF 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.
+ */
+
+/* $Id: time.h,v 1.30.18.2 2005/04/29 00:17:10 marka Exp $ */
+
+#ifndef ISC_TIME_H
+#define ISC_TIME_H 1
+
+/*! \file */
+
+#include <isc/lang.h>
+#include <isc/types.h>
+
+/***
+ *** Intervals
+ ***/
+
+/*! 
+ *  \brief
+ * The contents of this structure are private, and MUST NOT be accessed
+ * directly by callers.
+ *
+ * The contents are exposed only to allow callers to avoid dynamic allocation.
+ */
+struct isc_interval {
+	unsigned int seconds;
+	unsigned int nanoseconds;
+};
+
+extern isc_interval_t *isc_interval_zero;
+
+ISC_LANG_BEGINDECLS
+
+void
+isc_interval_set(isc_interval_t *i,
+		 unsigned int seconds, unsigned int nanoseconds);
+/*%<
+ * Set 'i' to a value representing an interval of 'seconds' seconds and
+ * 'nanoseconds' nanoseconds, suitable for use in isc_time_add() and
+ * isc_time_subtract().
+ *
+ * Requires:
+ *
+ *\li	't' is a valid pointer.
+ *\li	nanoseconds < 1000000000.
+ */
+
+isc_boolean_t
+isc_interval_iszero(const isc_interval_t *i);
+/*%<
+ * Returns ISC_TRUE iff. 'i' is the zero interval.
+ *
+ * Requires:
+ *
+ *\li	'i' is a valid pointer.
+ */
+
+/***
+ *** Absolute Times
+ ***/
+
+/*%
+ * The contents of this structure are private, and MUST NOT be accessed
+ * directly by callers.
+ *
+ * The contents are exposed only to allow callers to avoid dynamic allocation.
+ */
+
+struct isc_time {
+	unsigned int	seconds;
+	unsigned int	nanoseconds;
+};
+
+extern isc_time_t *isc_time_epoch;
+
+void
+isc_time_set(isc_time_t *t, unsigned int seconds, unsigned int nanoseconds);
+/*%<
+ * Set 't' to a particular number of seconds + nanoseconds since the epoch.
+ *
+ * Notes:
+ *\li	This call is equivalent to:
+ *\code
+ *	isc_time_settoepoch(t);
+ *	isc_interval_set(i, seconds, nanoseconds);
+ *	isc_time_add(t, i, t);
+ *\endcode
+ * Requires:
+ *\li	't' is a valid pointer.
+ *\li	nanoseconds < 1000000000.
+ */
+
+void
+isc_time_settoepoch(isc_time_t *t);
+/*%<
+ * Set 't' to the time of the epoch.
+ *
+ * Notes:
+ * \li	The date of the epoch is platform-dependent.
+ *
+ * Requires:
+ *
+ *\li	't' is a valid pointer.
+ */
+
+isc_boolean_t
+isc_time_isepoch(const isc_time_t *t);
+/*%<
+ * Returns ISC_TRUE iff. 't' is the epoch ("time zero").
+ *
+ * Requires:
+ *
+ *\li	't' is a valid pointer.
+ */
+
+isc_result_t
+isc_time_now(isc_time_t *t);
+/*%<
+ * Set 't' to the current absolute time.
+ *
+ * Requires:
+ *
+ *\li	't' is a valid pointer.
+ *
+ * Returns:
+ *
+ *\li	Success
+ *\li	Unexpected error
+ *		Getting the time from the system failed.
+ *\li	Out of range
+ *		The time from the system is too large to be represented
+ *		in the current definition of isc_time_t.
+ */
+
+isc_result_t
+isc_time_nowplusinterval(isc_time_t *t, const isc_interval_t *i);
+/*%<
+ * Set *t to the current absolute time + i.
+ *
+ * Note:
+ *\li	This call is equivalent to:
+ *
+ *\code
+ *		isc_time_now(t);
+ *		isc_time_add(t, i, t);
+ *\endcode
+ *
+ * Requires:
+ *
+ *\li	't' and 'i' are valid pointers.
+ *
+ * Returns:
+ *
+ *\li	Success
+ *\li	Unexpected error
+ *		Getting the time from the system failed.
+ *\li	Out of range
+ *		The interval added to the time from the system is too large to
+ *		be represented in the current definition of isc_time_t.
+ */
+
+int
+isc_time_compare(const isc_time_t *t1, const isc_time_t *t2);
+/*%<
+ * Compare the times referenced by 't1' and 't2'
+ *
+ * Requires:
+ *
+ *\li	't1' and 't2' are valid pointers.
+ *
+ * Returns:
+ *
+ *\li	-1		t1 < t2		(comparing times, not pointers)
+ *\li	0		t1 = t2
+ *\li	1		t1 > t2
+ */
+
+isc_result_t
+isc_time_add(const isc_time_t *t, const isc_interval_t *i, isc_time_t *result);
+/*%<
+ * Add 'i' to 't', storing the result in 'result'.
+ *
+ * Requires:
+ *
+ *\li	't', 'i', and 'result' are valid pointers.
+ *
+ * Returns:
+ * \li	Success
+ *\li	Out of range
+ * 		The interval added to the time is too large to
+ *		be represented in the current definition of isc_time_t.
+ */
+
+isc_result_t
+isc_time_subtract(const isc_time_t *t, const isc_interval_t *i,
+		  isc_time_t *result);
+/*%<
+ * Subtract 'i' from 't', storing the result in 'result'.
+ *
+ * Requires:
+ *
+ *\li	't', 'i', and 'result' are valid pointers.
+ *
+ * Returns:
+ *\li	Success
+ *\li	Out of range
+ *		The interval is larger than the time since the epoch.
+ */
+
+isc_uint64_t
+isc_time_microdiff(const isc_time_t *t1, const isc_time_t *t2);
+/*%<
+ * Find the difference in microseconds between time t1 and time t2.
+ * t2 is the subtrahend of t1; ie, difference = t1 - t2.
+ *
+ * Requires:
+ *
+ *\li	't1' and 't2' are valid pointers.
+ *
+ * Returns:
+ *\li	The difference of t1 - t2, or 0 if t1 <= t2.
+ */
+
+isc_uint32_t
+isc_time_seconds(const isc_time_t *t);
+/*%<
+ * Return the number of seconds since the epoch stored in a time structure.
+ *
+ * Requires:
+ *
+ *\li	't' is a valid pointer.
+ */
+
+isc_result_t
+isc_time_secondsastimet(const isc_time_t *t, time_t *secondsp);
+/*%<
+ * Ensure the number of seconds in an isc_time_t is representable by a time_t.
+ *
+ * Notes:
+ *\li	The number of seconds stored in an isc_time_t might be larger
+ *	than the number of seconds a time_t is able to handle.  Since
+ *	time_t is mostly opaque according to the ANSI/ISO standard
+ *	(essentially, all you can be sure of is that it is an arithmetic type,
+ *	not even necessarily integral), it can be tricky to ensure that
+ *	the isc_time_t is in the range a time_t can handle.  Use this
+ *	function in place of isc_time_seconds() any time you need to set a
+ *	time_t from an isc_time_t.
+ *
+ * Requires:
+ *\li	't' is a valid pointer.
+ *
+ * Returns:
+ *\li	Success
+ *\li	Out of range
+ */
+
+isc_uint32_t
+isc_time_nanoseconds(const isc_time_t *t);
+/*%<
+ * Return the number of nanoseconds stored in a time structure.
+ *
+ * Notes:
+ *\li	This is the number of nanoseconds in excess of the the number
+ *	of seconds since the epoch; it will always be less than one
+ *	full second.
+ *
+ * Requires:
+ *\li	't' is a valid pointer.
+ *
+ * Ensures:
+ *\li	The returned value is less than 1*10^9.
+ */
+
+void
+isc_time_formattimestamp(const isc_time_t *t, char *buf, unsigned int len);
+/*%<
+ * Format the time 't' into the buffer 'buf' of length 'len',
+ * using a format like "30-Aug-2000 04:06:47.997" and the local time zone.
+ * If the text does not fit in the buffer, the result is indeterminate,
+ * but is always guaranteed to be null terminated.
+ *
+ *  Requires:
+ *\li      'len' > 0
+ *  \li    'buf' points to an array of at least len chars
+ *
+ */
+
+ISC_LANG_ENDDECLS
+
+#endif /* ISC_TIME_H */