20060303a

1 files changed, 512 insertions, 0 deletions

diff --git a/emu/port/dat.h b/emu/port/dat.h
new file mode 100644
index 00000000..b245b61c
--- /dev/null
+++ b/emu/port/dat.h
@@ -0,0 +1,512 @@
+typedef struct Block	Block;
+typedef struct Chan	Chan;
+typedef struct Cmdbuf	Cmdbuf;
+typedef struct Cmdtab	Cmdtab;
+typedef struct Cname	Cname;
+typedef struct Dev	Dev;
+typedef struct Dirtab	Dirtab;
+typedef struct Egrp	Egrp;
+typedef struct Evalue	Evalue;
+typedef struct Fgrp	Fgrp;
+typedef struct Mount	Mount;
+typedef struct Mntcache Mntcache;
+typedef struct Mntparam Mntparam;
+typedef struct Mntrpc	Mntrpc;
+typedef struct Mntwalk	Mntwalk;
+typedef struct Mnt	Mnt;
+typedef struct Mhead	Mhead;
+typedef struct Osenv	Osenv;
+typedef struct Pgrp	Pgrp;
+typedef struct Proc	Proc;
+typedef struct Queue	Queue;
+typedef struct Ref	Ref;
+typedef struct Rendez	Rendez;
+typedef struct Rept	Rept;
+typedef struct Rootdata Rootdata;
+/*typedef struct RWlock	RWlock;*/
+typedef struct RWLock	RWlock;
+typedef struct Procs	Procs;
+typedef struct Signerkey Signerkey;
+typedef struct Skeyset	Skeyset;
+typedef struct Uqid	Uqid;
+typedef struct Uqidtab	Uqidtab;
+typedef struct Walkqid	Walkqid;
+
+#include "lib9.h"
+#undef CHDIR
+#undef NAMELEN
+#undef ERRLEN
+
+#pragma incomplete Queue
+#pragma incomplete Mntrpc
+
+#include "fcall.h"
+
+#include "pool.h"
+
+typedef int    Devgen(Chan*, char*, Dirtab*, int, int, Dir*);
+
+enum
+{
+	NERR		= 32,
+	KNAMELEN	= 28,
+	MAXROOT		= 5*KNAMELEN, 	/* Maximum root pathname len of devfs-* */
+	NUMSIZE		= 11,
+	PRINTSIZE	= 256,
+	READSTR		= 1000		/* temporary buffer size for device reads */
+};
+
+struct Ref
+{
+	Lock	lk;
+	long	ref;
+};
+
+struct Rendez
+{
+	Lock	l;
+	Proc*	p;
+};
+
+struct Rept
+{
+	Lock	l;
+	Rendez	r;
+	void	*o;
+	int	t;
+	int	(*active)(void*);
+	int	(*ck)(void*, int);
+	void	(*f)(void*);	/* called with VM acquire()'d */
+};
+
+/*
+ * Access types in namec & channel flags
+ */
+enum
+{
+	Aaccess,			/* as in access, stat */
+	Abind,			/* for left-hand-side of bind */
+	Atodir,				/* as in chdir */
+	Aopen,				/* for i/o */
+	Amount,				/* to be mounted upon */
+	Acreate,			/* file is to be created */
+	Aremove,			/* will be removed by caller */
+
+	COPEN	= 0x0001,		/* for i/o */
+	CMSG	= 0x0002,		/* the message channel for a mount */
+/*rsc	CCREATE	= 0x0004,		/* permits creation if c->mnt */
+	CCEXEC	= 0x0008,		/* close on exec */
+	CFREE	= 0x0010,		/* not in use */
+	CRCLOSE	= 0x0020,		/* remove on close */
+	CCACHE	= 0x0080		/* client cache */
+};
+
+struct Chan
+{
+	Lock	l;
+	Ref	r;
+	Chan*	next;			/* allocation */
+	Chan*	link;
+	vlong	offset;			/* in file */
+	ushort	type;
+	ulong	dev;
+	ushort	mode;			/* read/write */
+	ushort	flag;
+	Qid	qid;
+	int	fid;			/* for devmnt */
+	ulong	iounit;	/* chunk size for i/o; 0==default */
+	Mhead*	umh;			/* mount point that derived Chan; used in unionread */
+	Chan*	umc;			/* channel in union; held for union read */
+	QLock	umqlock;		/* serialize unionreads */
+	int	uri;			/* union read index */
+	int	dri;			/* devdirread index */
+	ulong	mountid;
+	Mntcache *mcp;			/* Mount cache pointer */
+	Mnt		*mux;		/* Mnt for clients using me for messages */
+	void*	aux;		/* device specific data */
+	Chan*	mchan;			/* channel to mounted server */
+	Qid	mqid;			/* qid of root of mount point */
+	Cname	*name;
+};
+
+struct Cname
+{
+	Ref	r;
+	int	alen;			/* allocated length */
+	int	len;			/* strlen(s) */
+	char	*s;
+};
+
+struct Dev
+{
+	int	dc;
+	char*	name;
+
+	void	(*init)(void);
+	Chan*	(*attach)(char*);
+	Walkqid*	(*walk)(Chan*, Chan*, char**, int);
+	int	(*stat)(Chan*, uchar*, int);
+	Chan*	(*open)(Chan*, int);
+	void	(*create)(Chan*, char*, int, ulong);
+	void	(*close)(Chan*);
+	long	(*read)(Chan*, void*, long, vlong);
+	Block*	(*bread)(Chan*, long, ulong);
+	long	(*write)(Chan*, void*, long, vlong);
+	long	(*bwrite)(Chan*, Block*, ulong);
+	void	(*remove)(Chan*);
+	int	(*wstat)(Chan*, uchar*, int);
+};
+
+enum
+{
+	BINTR		=	(1<<0),
+	BFREE		=	(1<<1),
+	BMORE		=	(1<<2)		/* continued in next block */
+};
+
+struct Block
+{
+	Block*	next;
+	Block*	list;
+	uchar*	rp;			/* first unconsumed byte */
+	uchar*	wp;			/* first empty byte */
+	uchar*	lim;			/* 1 past the end of the buffer */
+	uchar*	base;			/* start of the buffer */
+	void	(*free)(Block*);
+	ulong	flag;
+};
+#define BLEN(s)	((s)->wp - (s)->rp)
+#define BALLOC(s) ((s)->lim - (s)->base)
+
+struct Dirtab
+{
+	char	name[KNAMELEN];
+	Qid	qid;
+	vlong	length;
+	long	perm;
+};
+
+struct Walkqid
+{
+	Chan	*clone;
+	int	nqid;
+	Qid	qid[1];
+};
+
+enum
+{
+	NSMAX	=	1000,
+	NSLOG	=	7,
+	NSCACHE	=	(1<<NSLOG)
+};
+
+struct Mntwalk				/* state for /proc/#/ns */
+{
+	int		cddone;
+	ulong	id;
+	Mhead*	mh;
+	Mount*	cm;
+};
+
+struct Mount
+{
+	ulong	mountid;
+	Mount*	next;
+	Mhead*	head;
+	Mount*	copy;
+	Mount*	order;
+	Chan*	to;			/* channel replacing channel */
+	int	mflag;
+	char	*spec;
+};
+
+struct Mhead
+{
+	Ref	r;
+	RWlock	lock;
+	Chan*	from;			/* channel mounted upon */
+	Mount*	mount;			/* what's mounted upon it */
+	Mhead*	hash;			/* Hash chain */
+};
+
+struct Mnt
+{
+	Lock	l;
+	/* references are counted using c->ref; channels on this mount point incref(c->mchan) == Mnt.c */
+	Chan*	c;		/* Channel to file service */
+	Proc*	rip;		/* Reader in progress */
+	Mntrpc*	queue;		/* Queue of pending requests on this channel */
+	ulong	id;		/* Multiplexor id for channel check */
+	Mnt*	list;		/* Free list */
+	int	flags;		/* cache */
+	int	msize;		/* data + IOHDRSZ */
+	char	*version;			/* 9P version */
+	Queue	*q;		/* input queue */
+};
+
+enum
+{
+	MNTLOG	=	5,
+	MNTHASH =	1<<MNTLOG,		/* Hash to walk mount table */
+	DELTAFD=		20,		/* allocation quantum for process file descriptors */
+	MAXNFD =		4000,		/* max per process file descriptors */
+	MAXKEY =		8	/* keys for signed modules */
+};
+#define MOUNTH(p,qid)	((p)->mnthash[(qid).path&((1<<MNTLOG)-1)])
+
+struct Mntparam {
+	Chan*	chan;
+	Chan*	authchan;
+	char*	spec;
+	int	flags;
+};
+
+struct Pgrp
+{
+	Ref	r;			/* also used as a lock when mounting */
+	ulong	pgrpid;
+	RWlock	ns;			/* Namespace n read/one write lock */
+	QLock	nsh;
+	Mhead*	mnthash[MNTHASH];
+	int	progmode;
+	int	privatemem;	/* deny access to /prog by debuggers */
+	Chan*	dot;
+	Chan*	slash;
+	int	nodevs;
+	int	pin;
+};
+
+enum
+{
+	Nopin =	-1
+};
+
+struct Fgrp
+{
+	Lock	l;
+	Ref	r;
+	Chan**	fd;
+	int	nfd;			/* number of fd slots */
+	int	maxfd;			/* highest fd in use */
+	int	minfd;			/* lower bound on free fd */
+};
+
+struct Evalue
+{
+	char	*var;
+	char	*val;
+	int	len;
+	Qid	qid;
+	Evalue	*next;
+};
+
+struct Egrp
+{
+	Ref	r;
+	QLock	l;
+	ulong	path;
+	ulong	vers;
+	Evalue	*entries;
+};
+
+struct Signerkey
+{
+	Ref	r;
+	char*	owner;
+	ushort	footprint;
+	ulong	expires;
+	void*	alg;
+	void*	pk;
+	void	(*pkfree)(void*);
+};
+
+struct Skeyset
+{
+	Ref	r;
+	QLock	l;
+	ulong	flags;
+	char*	devs;
+	int	nkey;
+	Signerkey	*keys[MAXKEY];
+};
+
+struct Uqid
+{
+	Ref	r;
+	int	type;
+	int	dev;
+	vlong	oldpath;
+	vlong	newpath;
+	Uqid*	next;
+};
+
+enum
+{
+	Nqidhash = 32
+};
+
+struct Uqidtab
+{
+	QLock	l;
+	Uqid*	qids[Nqidhash];
+	ulong	pathgen;
+};
+
+struct Osenv
+{
+	char	*syserrstr;	/* last error from a system call, errbuf0 or 1 */
+	char	*errstr;	/* reason we're unwinding the error stack, errbuf1 or 0 */
+	char	errbuf0[ERRMAX];
+	char	errbuf1[ERRMAX];
+	Pgrp*	pgrp;		/* Ref to namespace, working dir and root */
+	Fgrp*	fgrp;		/* Ref to file descriptors */
+	Egrp*	egrp;	/* Environment vars */
+	Skeyset*		sigs;		/* Signed module keys */
+	Rendez*	rend;		/* Synchro point */
+	Queue*	waitq;		/* Info about dead children */
+	Queue*	childq;		/* Info about children for debuggers */
+	void*	debug;		/* Debugging master */
+	char*	user;	/* Inferno user name */
+	FPU	fpu;		/* Floating point thread state */
+	int	uid;		/* Numeric user id for host system */
+	int	gid;		/* Numeric group id for host system */
+	void	*ui;		/* User info for NT */
+};
+
+enum
+{
+	Unknown	= 0xdeadbabe,
+	IdleGC	= 0x16,
+	Interp	= 0x17,
+	BusyGC	= 0x18,
+	Moribund
+};
+
+struct Proc
+{
+	int	type;		/* interpreter or not */
+	char	text[KNAMELEN];
+	Proc*	qnext;		/* list of processes waiting on a Qlock */
+	long	pid;
+	Proc*	next;		/* list of created processes */
+	Proc*	prev;
+	Lock	rlock;	/* sync between sleep/swiproc for r */
+	Rendez*	r;		/* rendezvous point slept on */
+	Rendez	sleep;		/* place to sleep */
+	int		killed;		/* by swiproc */
+	int	swipend;	/* software interrupt pending for Prog */
+	int	syscall;	/* set true under sysio for interruptable syscalls */
+	int	intwait;	/* spin wait for note to turn up */
+	int	sigid;		/* handle used for signal/note/exception */
+	Lock	sysio;		/* note handler lock */
+	char	genbuf[128];	/* buffer used e.g. for last name element from namec */
+	int	nerr;		/* error stack SP */
+	osjmpbuf	estack[NERR];	/* vector of error jump labels */
+	char*	kstack;
+	void	(*func)(void*);	/* saved trampoline pointer for kproc */
+	void*	arg;		/* arg for invoked kproc function */
+	void*	iprog;		/* work for Prog after release */
+	void*	prog;		/* fake prog for slaves eg. exportfs */
+	Osenv*	env;		/* effective operating system environment */
+	Osenv	defenv;		/* default env for slaves with no prog */
+	osjmpbuf	privstack;	/* private stack for making new kids */
+	osjmpbuf	sharestack;
+	Proc	*kid;
+	void	*kidsp;
+	void	*os;		/* host os specific data */
+};
+
+#define poperror()	up->nerr--
+#define	waserror()	(up->nerr++, ossetjmp(up->estack[up->nerr-1]))
+
+enum
+{
+	/* kproc flags */
+	KPDUPPG		= (1<<0),
+	KPDUPFDG	= (1<<1),
+	KPDUPENVG	= (1<<2),
+	KPX11		= (1<<8),		/* needs silly amount of stack */
+	KPDUP		= (KPDUPPG|KPDUPFDG|KPDUPENVG)
+};
+
+struct Procs
+{
+	Lock	l;
+	Proc*	head;
+	Proc*	tail;
+};
+
+struct Rootdata
+{
+	int	dotdot;
+	void	*ptr;
+	int	size;
+	int	*sizep;
+};
+
+extern	Dev*	devtab[];
+extern	char	*ossysname;
+extern	char	*eve;
+extern	Queue*	kbdq;
+extern	Queue*	gkbdq;
+extern	Queue*	gkscanq;
+extern	int	Xsize;
+extern	int	Ysize;
+extern	Pool*	mainmem;
+extern	char	rootdir[MAXROOT];		/* inferno root */
+extern	Procs	procs;
+extern	int	sflag;
+extern	int	xtblbit;
+extern	int	globfs;
+extern	int	greyscale;
+extern	uint	qiomaxatomic;
+
+/*
+ * floating point control and status register masks
+ */
+enum
+{
+	INVAL		= 0x0001,
+	ZDIV		= 0x0002,
+	OVFL		= 0x0004,
+	UNFL		= 0x0008,
+	INEX		= 0x0010,
+	RND_NR		= 0x0000,
+	RND_NINF	= 0x0100,
+	RND_PINF	= 0x0200,
+	RND_Z		= 0x0300,
+	RND_MASK	= 0x0300
+};
+
+struct Cmdbuf
+{
+	char	*buf;
+	char	**f;
+	int	nf;
+};
+
+struct Cmdtab
+{
+	int	index;	/* used by client to switch on result */
+	char	*cmd;	/* command name */
+	int	narg;	/* expected #args; 0 ==> variadic */
+};
+
+/* queue state bits,  Qmsg, Qcoalesce, and Qkick can be set in qopen */
+enum
+{
+	/* Queue.state */
+	Qstarve		= (1<<0),	/* consumer starved */
+	Qmsg		= (1<<1),	/* message stream */
+	Qclosed		= (1<<2),	/* queue has been closed/hungup */
+	Qflow		= (1<<3),	/* producer flow controlled */
+	Qcoalesce	= (1<<4),	/* coallesce packets on read */
+	Qkick		= (1<<5),	/* always call the kick routine after qwrite */
+};
+
+#define DEVDOTDOT -1
+
+#pragma varargck	type	"I" uchar*
+#pragma	varargck	type	"E" uchar*
+
+extern void	(*mainmonitor)(int, void*, ulong);