initial import

4 files changed, 562 insertions, 0 deletions

diff --git a/inet/arpa/ftp.h b/inet/arpa/ftp.h
new file mode 100644
index 0000000..64532b9
--- /dev/null
+++ b/inet/arpa/ftp.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 1983, 1989, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)ftp.h	8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef _FTP_H_
+#define	_FTP_H_
+
+/* Definitions for FTP; see RFC-765. */
+
+/*
+ * Reply codes.
+ */
+#define PRELIM		1	/* positive preliminary */
+#define COMPLETE	2	/* positive completion */
+#define CONTINUE	3	/* positive intermediate */
+#define TRANSIENT	4	/* transient negative completion */
+#define ERROR		5	/* permanent negative completion */
+
+/*
+ * Type codes
+ */
+#define	TYPE_A		1	/* ASCII */
+#define	TYPE_E		2	/* EBCDIC */
+#define	TYPE_I		3	/* image */
+#define	TYPE_L		4	/* local byte size */
+
+#ifdef FTP_NAMES
+char *typenames[] =  {"0", "ASCII", "EBCDIC", "Image", "Local" };
+#endif
+
+/*
+ * Form codes
+ */
+#define	FORM_N		1	/* non-print */
+#define	FORM_T		2	/* telnet format effectors */
+#define	FORM_C		3	/* carriage control (ASA) */
+#ifdef FTP_NAMES
+char *formnames[] =  {"0", "Nonprint", "Telnet", "Carriage-control" };
+#endif
+
+/*
+ * Structure codes
+ */
+#define	STRU_F		1	/* file (no record structure) */
+#define	STRU_R		2	/* record structure */
+#define	STRU_P		3	/* page structure */
+#ifdef FTP_NAMES
+char *strunames[] =  {"0", "File", "Record", "Page" };
+#endif
+
+/*
+ * Mode types
+ */
+#define	MODE_S		1	/* stream */
+#define	MODE_B		2	/* block */
+#define	MODE_C		3	/* compressed */
+#ifdef FTP_NAMES
+char *modenames[] =  {"0", "Stream", "Block", "Compressed" };
+#endif
+
+/*
+ * Record Tokens
+ */
+#define	REC_ESC		'\377'	/* Record-mode Escape */
+#define	REC_EOR		'\001'	/* Record-mode End-of-Record */
+#define REC_EOF		'\002'	/* Record-mode End-of-File */
+
+/*
+ * Block Header
+ */
+#define	BLK_EOR		0x80	/* Block is End-of-Record */
+#define	BLK_EOF		0x40	/* Block is End-of-File */
+#define BLK_ERRORS	0x20	/* Block is suspected of containing errors */
+#define	BLK_RESTART	0x10	/* Block is Restart Marker */
+
+#define	BLK_BYTECOUNT	2	/* Bytes in this block */
+
+#endif /* !_FTP_H_ */
diff --git a/inet/arpa/inet.h b/inet/arpa/inet.h
new file mode 100644
index 0000000..a231484
--- /dev/null
+++ b/inet/arpa/inet.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)inet.h	8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef _INET_H_
+#define	_INET_H_
+
+/* External definitions for functions in inet(3) */
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+unsigned long	 inet_addr __P((const char *));
+int		 inet_aton __P((const char *, struct in_addr *));
+unsigned long	 inet_lnaof __P((struct in_addr));
+struct in_addr	 inet_makeaddr __P((u_long , u_long));
+unsigned long	 inet_netof __P((struct in_addr));
+unsigned long	 inet_network __P((const char *));
+char		*inet_ntoa __P((struct in_addr));
+__END_DECLS
+
+#endif /* !_INET_H_ */
diff --git a/inet/arpa/telnet.h b/inet/arpa/telnet.h
new file mode 100644
index 0000000..10155a8
--- /dev/null
+++ b/inet/arpa/telnet.h
@@ -0,0 +1,320 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)telnet.h	8.2 (Berkeley) 12/15/93
+ */
+
+#ifndef _TELNET_H_
+#define	_TELNET_H_
+
+/*
+ * Definitions for the TELNET protocol.
+ */
+#define	IAC	255		/* interpret as command: */
+#define	DONT	254		/* you are not to use option */
+#define	DO	253		/* please, you use option */
+#define	WONT	252		/* I won't use option */
+#define	WILL	251		/* I will use option */
+#define	SB	250		/* interpret as subnegotiation */
+#define	GA	249		/* you may reverse the line */
+#define	EL	248		/* erase the current line */
+#define	EC	247		/* erase the current character */
+#define	AYT	246		/* are you there */
+#define	AO	245		/* abort output--but let prog finish */
+#define	IP	244		/* interrupt process--permanently */
+#define	BREAK	243		/* break */
+#define	DM	242		/* data mark--for connect. cleaning */
+#define	NOP	241		/* nop */
+#define	SE	240		/* end sub negotiation */
+#define EOR     239             /* end of record (transparent mode) */
+#define	ABORT	238		/* Abort process */
+#define	SUSP	237		/* Suspend process */
+#define	xEOF	236		/* End of file: EOF is already used... */
+
+#define SYNCH	242		/* for telfunc calls */
+
+#ifdef TELCMDS
+char *telcmds[] = {
+	"EOF", "SUSP", "ABORT", "EOR",
+	"SE", "NOP", "DMARK", "BRK", "IP", "AO", "AYT", "EC",
+	"EL", "GA", "SB", "WILL", "WONT", "DO", "DONT", "IAC", 0,
+};
+#else
+extern char *telcmds[];
+#endif
+
+#define	TELCMD_FIRST	xEOF
+#define	TELCMD_LAST	IAC
+#define	TELCMD_OK(x)	((unsigned int)(x) <= TELCMD_LAST && \
+			 (unsigned int)(x) >= TELCMD_FIRST)
+#define	TELCMD(x)	telcmds[(x)-TELCMD_FIRST]
+
+/* telnet options */
+#define TELOPT_BINARY	0	/* 8-bit data path */
+#define TELOPT_ECHO	1	/* echo */
+#define	TELOPT_RCP	2	/* prepare to reconnect */
+#define	TELOPT_SGA	3	/* suppress go ahead */
+#define	TELOPT_NAMS	4	/* approximate message size */
+#define	TELOPT_STATUS	5	/* give status */
+#define	TELOPT_TM	6	/* timing mark */
+#define	TELOPT_RCTE	7	/* remote controlled transmission and echo */
+#define TELOPT_NAOL 	8	/* negotiate about output line width */
+#define TELOPT_NAOP 	9	/* negotiate about output page size */
+#define TELOPT_NAOCRD	10	/* negotiate about CR disposition */
+#define TELOPT_NAOHTS	11	/* negotiate about horizontal tabstops */
+#define TELOPT_NAOHTD	12	/* negotiate about horizontal tab disposition */
+#define TELOPT_NAOFFD	13	/* negotiate about formfeed disposition */
+#define TELOPT_NAOVTS	14	/* negotiate about vertical tab stops */
+#define TELOPT_NAOVTD	15	/* negotiate about vertical tab disposition */
+#define TELOPT_NAOLFD	16	/* negotiate about output LF disposition */
+#define TELOPT_XASCII	17	/* extended ascic character set */
+#define	TELOPT_LOGOUT	18	/* force logout */
+#define	TELOPT_BM	19	/* byte macro */
+#define	TELOPT_DET	20	/* data entry terminal */
+#define	TELOPT_SUPDUP	21	/* supdup protocol */
+#define	TELOPT_SUPDUPOUTPUT 22	/* supdup output */
+#define	TELOPT_SNDLOC	23	/* send location */
+#define	TELOPT_TTYPE	24	/* terminal type */
+#define	TELOPT_EOR	25	/* end or record */
+#define	TELOPT_TUID	26	/* TACACS user identification */
+#define	TELOPT_OUTMRK	27	/* output marking */
+#define	TELOPT_TTYLOC	28	/* terminal location number */
+#define	TELOPT_3270REGIME 29	/* 3270 regime */
+#define	TELOPT_X3PAD	30	/* X.3 PAD */
+#define	TELOPT_NAWS	31	/* window size */
+#define	TELOPT_TSPEED	32	/* terminal speed */
+#define	TELOPT_LFLOW	33	/* remote flow control */
+#define TELOPT_LINEMODE	34	/* Linemode option */
+#define TELOPT_XDISPLOC	35	/* X Display Location */
+#define TELOPT_OLD_ENVIRON 36	/* Old - Environment variables */
+#define	TELOPT_AUTHENTICATION 37/* Authenticate */
+#define	TELOPT_ENCRYPT	38	/* Encryption option */
+#define TELOPT_NEW_ENVIRON 39	/* New - Environment variables */
+#define	TELOPT_EXOPL	255	/* extended-options-list */
+
+
+#define	NTELOPTS	(1+TELOPT_NEW_ENVIRON)
+#ifdef TELOPTS
+char *telopts[NTELOPTS+1] = {
+	"BINARY", "ECHO", "RCP", "SUPPRESS GO AHEAD", "NAME",
+	"STATUS", "TIMING MARK", "RCTE", "NAOL", "NAOP",
+	"NAOCRD", "NAOHTS", "NAOHTD", "NAOFFD", "NAOVTS",
+	"NAOVTD", "NAOLFD", "EXTEND ASCII", "LOGOUT", "BYTE MACRO",
+	"DATA ENTRY TERMINAL", "SUPDUP", "SUPDUP OUTPUT",
+	"SEND LOCATION", "TERMINAL TYPE", "END OF RECORD",
+	"TACACS UID", "OUTPUT MARKING", "TTYLOC",
+	"3270 REGIME", "X.3 PAD", "NAWS", "TSPEED", "LFLOW",
+	"LINEMODE", "XDISPLOC", "OLD-ENVIRON", "AUTHENTICATION",
+	"ENCRYPT", "NEW-ENVIRON",
+	0,
+};
+#define	TELOPT_FIRST	TELOPT_BINARY
+#define	TELOPT_LAST	TELOPT_NEW_ENVIRON
+#define	TELOPT_OK(x)	((unsigned int)(x) <= TELOPT_LAST)
+#define	TELOPT(x)	telopts[(x)-TELOPT_FIRST]
+#endif
+
+/* sub-option qualifiers */
+#define	TELQUAL_IS	0	/* option is... */
+#define	TELQUAL_SEND	1	/* send option */
+#define	TELQUAL_INFO	2	/* ENVIRON: informational version of IS */
+#define	TELQUAL_REPLY	2	/* AUTHENTICATION: client version of IS */
+#define	TELQUAL_NAME	3	/* AUTHENTICATION: client version of IS */
+
+#define	LFLOW_OFF		0	/* Disable remote flow control */
+#define	LFLOW_ON		1	/* Enable remote flow control */
+#define	LFLOW_RESTART_ANY	2	/* Restart output on any char */
+#define	LFLOW_RESTART_XON	3	/* Restart output only on XON */
+
+/*
+ * LINEMODE suboptions
+ */
+
+#define	LM_MODE		1
+#define	LM_FORWARDMASK	2
+#define	LM_SLC		3
+
+#define	MODE_EDIT	0x01
+#define	MODE_TRAPSIG	0x02
+#define	MODE_ACK	0x04
+#define MODE_SOFT_TAB	0x08
+#define MODE_LIT_ECHO	0x10
+
+#define	MODE_MASK	0x1f
+
+/* Not part of protocol, but needed to simplify things... */
+#define MODE_FLOW		0x0100
+#define MODE_ECHO		0x0200
+#define MODE_INBIN		0x0400
+#define MODE_OUTBIN		0x0800
+#define MODE_FORCE		0x1000
+
+#define	SLC_SYNCH	1
+#define	SLC_BRK		2
+#define	SLC_IP		3
+#define	SLC_AO		4
+#define	SLC_AYT		5
+#define	SLC_EOR		6
+#define	SLC_ABORT	7
+#define	SLC_EOF		8
+#define	SLC_SUSP	9
+#define	SLC_EC		10
+#define	SLC_EL		11
+#define	SLC_EW		12
+#define	SLC_RP		13
+#define	SLC_LNEXT	14
+#define	SLC_XON		15
+#define	SLC_XOFF	16
+#define	SLC_FORW1	17
+#define	SLC_FORW2	18
+
+#define	NSLC		18
+
+/*
+ * For backwards compatability, we define SLC_NAMES to be the
+ * list of names if SLC_NAMES is not defined.
+ */
+#define	SLC_NAMELIST	"0", "SYNCH", "BRK", "IP", "AO", "AYT", "EOR", \
+			"ABORT", "EOF", "SUSP", "EC", "EL", "EW", "RP", \
+			"LNEXT", "XON", "XOFF", "FORW1", "FORW2", 0,
+#ifdef	SLC_NAMES
+char *slc_names[] = {
+	SLC_NAMELIST
+};
+#else
+extern char *slc_names[];
+#define	SLC_NAMES SLC_NAMELIST
+#endif
+
+#define	SLC_NAME_OK(x)	((unsigned int)(x) <= NSLC)
+#define SLC_NAME(x)	slc_names[x]
+
+#define	SLC_NOSUPPORT	0
+#define	SLC_CANTCHANGE	1
+#define	SLC_VARIABLE	2
+#define	SLC_DEFAULT	3
+#define	SLC_LEVELBITS	0x03
+
+#define	SLC_FUNC	0
+#define	SLC_FLAGS	1
+#define	SLC_VALUE	2
+
+#define	SLC_ACK		0x80
+#define	SLC_FLUSHIN	0x40
+#define	SLC_FLUSHOUT	0x20
+
+#define	OLD_ENV_VAR	1
+#define	OLD_ENV_VALUE	0
+#define	NEW_ENV_VAR	0
+#define	NEW_ENV_VALUE	1
+#define	ENV_ESC		2
+#define ENV_USERVAR	3
+
+/*
+ * AUTHENTICATION suboptions
+ */
+
+/*
+ * Who is authenticating who ...
+ */
+#define	AUTH_WHO_CLIENT		0	/* Client authenticating server */
+#define	AUTH_WHO_SERVER		1	/* Server authenticating client */
+#define	AUTH_WHO_MASK		1
+
+/*
+ * amount of authentication done
+ */
+#define	AUTH_HOW_ONE_WAY	0
+#define	AUTH_HOW_MUTUAL		2
+#define	AUTH_HOW_MASK		2
+
+#define	AUTHTYPE_NULL		0
+#define	AUTHTYPE_KERBEROS_V4	1
+#define	AUTHTYPE_KERBEROS_V5	2
+#define	AUTHTYPE_SPX		3
+#define	AUTHTYPE_MINK		4
+#define	AUTHTYPE_CNT		5
+
+#define	AUTHTYPE_TEST		99
+
+#ifdef	AUTH_NAMES
+char *authtype_names[] = {
+	"NULL", "KERBEROS_V4", "KERBEROS_V5", "SPX", "MINK", 0,
+};
+#else
+extern char *authtype_names[];
+#endif
+
+#define	AUTHTYPE_NAME_OK(x)	((unsigned int)(x) < AUTHTYPE_CNT)
+#define	AUTHTYPE_NAME(x)	authtype_names[x]
+
+/*
+ * ENCRYPTion suboptions
+ */
+#define	ENCRYPT_IS		0	/* I pick encryption type ... */
+#define	ENCRYPT_SUPPORT		1	/* I support encryption types ... */
+#define	ENCRYPT_REPLY		2	/* Initial setup response */
+#define	ENCRYPT_START		3	/* Am starting to send encrypted */
+#define	ENCRYPT_END		4	/* Am ending encrypted */
+#define	ENCRYPT_REQSTART	5	/* Request you start encrypting */
+#define	ENCRYPT_REQEND		6	/* Request you send encrypting */
+#define	ENCRYPT_ENC_KEYID	7
+#define	ENCRYPT_DEC_KEYID	8
+#define	ENCRYPT_CNT		9
+
+#define	ENCTYPE_ANY		0
+#define	ENCTYPE_DES_CFB64	1
+#define	ENCTYPE_DES_OFB64	2
+#define	ENCTYPE_CNT		3
+
+#ifdef	ENCRYPT_NAMES
+char *encrypt_names[] = {
+	"IS", "SUPPORT", "REPLY", "START", "END",
+	"REQUEST-START", "REQUEST-END", "ENC-KEYID", "DEC-KEYID",
+	0,
+};
+char *enctype_names[] = {
+	"ANY", "DES_CFB64",  "DES_OFB64",  0,
+};
+#else
+extern char *encrypt_names[];
+extern char *enctype_names[];
+#endif
+
+
+#define	ENCRYPT_NAME_OK(x)	((unsigned int)(x) < ENCRYPT_CNT)
+#define	ENCRYPT_NAME(x)		encrypt_names[x]
+
+#define	ENCTYPE_NAME_OK(x)	((unsigned int)(x) < ENCTYPE_CNT)
+#define	ENCTYPE_NAME(x)		enctype_names[x]
+
+#endif /* !_TELNET_H_ */
diff --git a/inet/arpa/tftp.h b/inet/arpa/tftp.h
new file mode 100644
index 0000000..0367200
--- /dev/null
+++ b/inet/arpa/tftp.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)tftp.h	8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef _TFTP_H_
+#define	_TFTP_H_
+
+/*
+ * Trivial File Transfer Protocol (IEN-133)
+ */
+#define	SEGSIZE		512		/* data segment size */
+
+/*
+ * Packet types.
+ */
+#define	RRQ	01			/* read request */
+#define	WRQ	02			/* write request */
+#define	DATA	03			/* data packet */
+#define	ACK	04			/* acknowledgement */
+#define	ERROR	05			/* error code */
+
+struct	tftphdr {
+	short	th_opcode;		/* packet type */
+	union {
+		short	tu_block;	/* block # */
+		short	tu_code;	/* error code */
+		char	tu_stuff[1];	/* request packet stuff */
+	} th_u;
+	char	th_data[1];		/* data or error string */
+};
+
+#define	th_block	th_u.tu_block
+#define	th_code		th_u.tu_code
+#define	th_stuff	th_u.tu_stuff
+#define	th_msg		th_data
+
+/*
+ * Error codes.
+ */
+#define	EUNDEF		0		/* not defined */
+#define	ENOTFOUND	1		/* file not found */
+#define	EACCESS		2		/* access violation */
+#define	ENOSPACE	3		/* disk full or allocation exceeded */
+#define	EBADOP		4		/* illegal TFTP operation */
+#define	EBADID		5		/* unknown transfer ID */
+#define	EEXISTS		6		/* file already exists */
+#define	ENOUSER		7		/* no such user */
+
+#endif /* !_TFTP_H_ */