BSD 4.4 Lite Libexec Sources

1 files changed, 244 insertions, 0 deletions

diff --git a/libexec/rbootd/rmp_var.h b/libexec/rbootd/rmp_var.h
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+/*
+ * Copyright (c) 1988, 1992 The University of Utah and the Center
+ *	for Software Science (CSS).
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Center for Software Science of the University of Utah Computer
+ * Science Department.  CSS requests users of this software to return
+ * to css-dist@cs.utah.edu any improvements that they make and grant
+ * CSS redistribution rights.
+ *
+ * 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.
+ *
+ *	@(#)rmp_var.h	8.1 (Berkeley) 6/4/93
+ *
+ * Utah $Hdr: rmp_var.h 3.1 92/07/06$
+ * Author: Jeff Forys, University of Utah CSS
+ */
+
+/*
+ *  Possible values for "rmp_type" fields.
+ */
+
+#define	RMP_BOOT_REQ	1	/* boot request packet */
+#define	RMP_BOOT_REPL	129	/* boot reply packet */
+#define	RMP_READ_REQ	2	/* read request packet */
+#define	RMP_READ_REPL	130	/* read reply packet */
+#define	RMP_BOOT_DONE	3	/* boot complete packet */
+
+/*
+ *  Useful constants.
+ */
+
+#define RMP_VERSION	2	/* protocol version */
+#define RMP_TIMEOUT	600	/* timeout connection after ten minutes */
+#define	RMP_PROBESID	0xffff	/* session ID for probes */
+#define	RMP_HOSTLEN	13	/* max length of server's name */
+#define	RMP_MACHLEN	20	/* length of machine type field */
+
+/*
+ *  RMP error codes
+ */
+
+#define	RMP_E_OKAY	0
+#define	RMP_E_EOF	2	/* read reply: returned end of file */
+#define	RMP_E_ABORT	3	/* abort operation */
+#define	RMP_E_BUSY	4	/* boot reply: server busy */
+#define	RMP_E_TIMEOUT	5	/* lengthen time out (not implemented) */
+#define	RMP_E_NOFILE	16	/* boot reply: file does not exist */
+#define RMP_E_OPENFILE	17	/* boot reply: file open failed */
+#define	RMP_E_NODFLT	18	/* boot reply: default file does not exist */
+#define RMP_E_OPENDFLT	19	/* boot reply: default file open failed */
+#define	RMP_E_BADSID	25	/* read reply: bad session ID */
+#define RMP_E_BADPACKET	27 	/* Bad packet detected */
+
+/*
+ *  RMPDATALEN is the maximum number of data octets that can be stuffed
+ *  into an RMP packet.  This excludes the 802.2 LLC w/HP extensions.
+ */
+#define RMPDATALEN	(RMP_MAX_PACKET - (sizeof(struct hp_hdr) + \
+			                   sizeof(struct hp_llc)))
+
+/*
+ *  Define sizes of packets we send.  Boot and Read replies are variable
+ *  in length depending on the length of `s'.
+ *
+ *  Also, define how much space `restofpkt' can take up for outgoing
+ *  Boot and Read replies.  Boot Request packets are effectively
+ *  limited to 255 bytes due to the preceding 1-byte length field.
+ */
+
+#define	RMPBOOTSIZE(s)	(sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \
+			 sizeof(struct rmp_boot_repl) + s - sizeof(restofpkt))
+#define	RMPREADSIZE(s)	(sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \
+			 sizeof(struct rmp_read_repl) + s - sizeof(restofpkt) \
+			 - sizeof(u_char))
+#define	RMPDONESIZE	(sizeof(struct hp_hdr) + sizeof(struct hp_llc) + \
+			 sizeof(struct rmp_boot_done))
+#define	RMPBOOTDATA	255
+#define	RMPREADDATA	(RMPDATALEN - \
+			 (2*sizeof(u_char)+sizeof(u_short)+sizeof(u_word)))
+
+/*
+ * This protocol defines some field sizes as "rest of ethernet packet".
+ * There is no easy way to specify this in C, so we use a one character
+ * field to denote it, and index past it to the end of the packet.
+ */
+
+typedef char	restofpkt;
+
+/*
+ * Due to the RMP packet layout, we'll run into alignment problems
+ * on machines that cant access words on half-word boundaries.  If
+ * you know that your machine does not suffer from this problem,
+ * add it to the hp300 #define below.
+ *
+ * The following macros are used to deal with this problem:
+ *	WORDZE(w)	Return True if u_word `w' is zero, False otherwise.
+ *	ZEROWORD(w)	Set u_word `w' to zero.
+ *	COPYWORD(w1,w2)	Copy u_word `w1' to `w2'.
+ *	GETWORD(w,i)	Copy u_word `w' into int `i'.
+ *	PUTWORD(i,w)	Copy int `i' into u_word `w'.
+ *
+ * N.B. We do not support little endian alignment-challenged machines.
+ */
+#if defined(vax) || defined(tahoe) || defined(hp300)
+
+typedef	u_int		u_word;
+
+#define	WORDZE(w)	((w) == 0)
+#define	ZEROWORD(w)	(w) = 0
+#define	COPYWORD(w1,w2)	(w2) = (w1)
+#define	GETWORD(w, i)	(i) = (w)
+#define	PUTWORD(i, w)	(w) = (i)
+
+#else
+
+#define	_WORD_HIGHPART	0	/* XXX: assume Big Endian for now */
+#define	_WORD_LOWPART	1
+
+typedef	struct _uword { u_short val[2]; }	u_word;
+
+#define	WORDZE(w) \
+	((w.val[_WORD_HIGHPART] == 0) && (w.val[_WORD_LOWPART] == 0))
+#define	ZEROWORD(w) \
+	(w).val[_WORD_HIGHPART] = (w).val[_WORD_LOWPART] = 0
+#define	COPYWORD(w1, w2) \
+	{ (w2).val[_WORD_HIGHPART] = (w1).val[_WORD_HIGHPART]; \
+	  (w2).val[_WORD_LOWPART] = (w1).val[_WORD_LOWPART]; \
+	}
+#define	GETWORD(w, i) \
+	(i) = (((u_int)(w).val[_WORD_HIGHPART]) << 16) | (w).val[_WORD_LOWPART]
+#define	PUTWORD(i, w) \
+	{ (w).val[_WORD_HIGHPART] = (u_short) (((i) >> 16) & 0xffff); \
+	  (w).val[_WORD_LOWPART] = (u_short) (i & 0xffff); \
+	}
+
+#endif
+
+/*
+ * Packet structures.
+ */
+
+struct rmp_raw {		/* generic RMP packet */
+	u_char	rmp_type;		/* packet type */
+	u_char	rmp_rawdata[RMPDATALEN-1];
+};
+
+struct rmp_boot_req {		/* boot request */
+	u_char	rmp_type;		/* packet type (RMP_BOOT_REQ) */
+	u_char	rmp_retcode;		/* return code (0) */
+	u_word	rmp_seqno;		/* sequence number (real time clock) */
+	u_short	rmp_session;		/* session id (normally 0) */
+	u_short	rmp_version;		/* protocol version (RMP_VERSION) */
+	char	rmp_machtype[RMP_MACHLEN];	/* machine type */
+	u_char	rmp_flnmsize;		/* length of rmp_flnm */
+	restofpkt rmp_flnm;		/* name of file to be read */
+};
+
+struct rmp_boot_repl {		/* boot reply */
+	u_char	rmp_type;		/* packet type (RMP_BOOT_REPL) */
+	u_char	rmp_retcode;		/* return code (normally 0) */
+	u_word	rmp_seqno;		/* sequence number (from boot req) */
+	u_short	rmp_session;		/* session id (generated) */
+	u_short	rmp_version;		/* protocol version (RMP_VERSION) */
+	u_char	rmp_flnmsize;		/* length of rmp_flnm */
+	restofpkt rmp_flnm;		/* name of file (from boot req) */
+};
+
+struct rmp_read_req {		/* read request */
+	u_char	rmp_type;		/* packet type (RMP_READ_REQ) */
+	u_char	rmp_retcode;		/* return code (0) */
+	u_word	rmp_offset;		/* file relative byte offset */
+	u_short	rmp_session;		/* session id (from boot repl) */
+	u_short	rmp_size;		/* max no of bytes to send */
+};
+
+struct rmp_read_repl {		/* read reply */
+	u_char	rmp_type;		/* packet type (RMP_READ_REPL) */
+	u_char	rmp_retcode;		/* return code (normally 0) */
+	u_word	rmp_offset;		/* byte offset (from read req) */
+	u_short	rmp_session;		/* session id (from read req) */
+	restofpkt rmp_data;		/* data (max size from read req) */
+	u_char	rmp_unused;		/* padding to 16-bit boundary */
+};
+
+struct rmp_boot_done {		/* boot complete */
+	u_char	rmp_type;		/* packet type (RMP_BOOT_DONE) */
+	u_char	rmp_retcode;		/* return code (0) */
+	u_word	rmp_unused;		/* not used (0) */
+	u_short	rmp_session;		/* session id (from read repl) */
+};
+
+struct rmp_packet {
+	struct hp_hdr hp_hdr;
+	struct hp_llc hp_llc;
+	union {
+		struct rmp_boot_req	rmp_brq;	/* boot request */
+		struct rmp_boot_repl	rmp_brpl;	/* boot reply */
+		struct rmp_read_req	rmp_rrq;	/* read request */
+		struct rmp_read_repl	rmp_rrpl;	/* read reply */
+		struct rmp_boot_done	rmp_done;	/* boot complete */
+		struct rmp_raw		rmp_raw;	/* raw data */
+	} rmp_proto;
+};
+
+/*
+ *  Make life easier...
+ */
+
+#define	r_type	rmp_proto.rmp_raw.rmp_type
+#define	r_data	rmp_proto.rmp_raw.rmp_data
+#define	r_brq	rmp_proto.rmp_brq
+#define	r_brpl	rmp_proto.rmp_brpl
+#define	r_rrq	rmp_proto.rmp_rrq
+#define	r_rrpl	rmp_proto.rmp_rrpl
+#define	r_done	rmp_proto.rmp_done