removing (outdated) drawterm

drawterm is much better maintained by russ cox,
so removing this outdated copy.

for a more recent version, go to:

http://swtch.com/drawterm/

1 files changed, 0 insertions, 511 deletions

diff --git a/sys/src/cmd/unix/drawterm/exportfs/exportfs.c b/sys/src/cmd/unix/drawterm/exportfs/exportfs.c
deleted file mode 100644
index 568cdbea1..000000000
--- a/sys/src/cmd/unix/drawterm/exportfs/exportfs.c
+++ /dev/null
@@ -1,511 +0,0 @@
-/*
- * exportfs - Export a plan 9 name space across a network
- */
-#include <u.h>
-#include <libc.h>
-#include <fcall.h>
-#include <libsec.h>
-#include "drawterm.h"
-#define Extern
-#include "exportfs.h"
-
-/* #define QIDPATH	((1LL<<48)-1) */
-#define QIDPATH	((((vlong)1)<<48)-1)
-vlong newqid = 0;
-
-void (*fcalls[256])(Fsrpc*);
-
-/* accounting and debugging counters */
-int	filecnt;
-int	freecnt;
-int	qidcnt;
-int	qfreecnt;
-int	ncollision;
-int	netfd;
-
-int
-exportfs(int fd, int msgsz)
-{
-	char buf[ERRMAX], ebuf[ERRMAX];
-	Fsrpc *r;
-	int i, n;
-
-	fcalls[Tversion] = Xversion;
-	fcalls[Tauth] = Xauth;
-	fcalls[Tflush] = Xflush;
-	fcalls[Tattach] = Xattach;
-	fcalls[Twalk] = Xwalk;
-	fcalls[Topen] = slave;
-	fcalls[Tcreate] = Xcreate;
-	fcalls[Tclunk] = Xclunk;
-	fcalls[Tread] = slave;
-	fcalls[Twrite] = slave;
-	fcalls[Tremove] = Xremove;
-	fcalls[Tstat] = Xstat;
-	fcalls[Twstat] = Xwstat;
-
-	srvfd = -1;
-	netfd = fd;
-	//dbg = 1;
-
-	strcpy(buf, "this is buf");
-	strcpy(ebuf, "this is ebuf");
-	DEBUG(DFD, "exportfs: started\n");
-
-//	rfork(RFNOTEG);
-
-	messagesize = msgsz;
-	if(messagesize == 0){
-		messagesize = iounit(netfd);
-		if(messagesize == 0)
-			messagesize = 8192+IOHDRSZ;
-	}
-
-	Workq = emallocz(sizeof(Fsrpc)*Nr_workbufs);
-//	for(i=0; i<Nr_workbufs; i++)
-//		Workq[i].buf = emallocz(messagesize);
-	fhash = emallocz(sizeof(Fid*)*FHASHSIZE);
-
-	fmtinstall('F', fcallfmt);
-
-	initroot();
-
-	DEBUG(DFD, "exportfs: %s\n", buf);
-
-	/*
-	 * Start serving file requests from the network
-	 */
-	for(;;) {
-		r = getsbuf();
-		if(r == 0)
-			fatal("Out of service buffers");
-			
-		DEBUG(DFD, "read9p...");
-		n = read9pmsg(netfd, r->buf, messagesize);
-		if(n <= 0)
-			fatal("eof: n=%d %r", n);
-
-		if(convM2S(r->buf, n, &r->work) == 0){
-			iprint("convM2S %d byte message\n", n);
-			for(i=0; i<n; i++){
-				iprint(" %.2ux", r->buf[i]);
-				if(i%16 == 15)
-					iprint("\n");
-			}
-			if(i%16)
-				iprint("\n");
-			fatal("convM2S format error");
-		}
-
-if(0) iprint("<- %F\n", &r->work);
-		DEBUG(DFD, "%F\n", &r->work);
-		(fcalls[r->work.type])(r);
-	}
-}
-
-void
-reply(Fcall *r, Fcall *t, char *err)
-{
-	uchar *data;
-	int m, n;
-
-	t->tag = r->tag;
-	t->fid = r->fid;
-	if(err) {
-		t->type = Rerror;
-		t->ename = err;
-	}
-	else 
-		t->type = r->type + 1;
-
-if(0) iprint("-> %F\n", t);
-	DEBUG(DFD, "\t%F\n", t);
-
-	data = malloc(messagesize);	/* not mallocz; no need to clear */
-	if(data == nil)
-		fatal(Enomem);
-	n = convS2M(t, data, messagesize);
-	if((m=write(netfd, data, n))!=n){
-		iprint("wrote %d got %d (%r)\n", n, m);
-		fatal("write");
-	}
-	free(data);
-}
-
-Fid *
-getfid(int nr)
-{
-	Fid *f;
-
-	for(f = fidhash(nr); f; f = f->next)
-		if(f->nr == nr)
-			return f;
-
-	return 0;
-}
-
-int
-freefid(int nr)
-{
-	Fid *f, **l;
-	char buf[128];
-
-	l = &fidhash(nr);
-	for(f = *l; f; f = f->next) {
-		if(f->nr == nr) {
-			if(f->mid) {
-				sprint(buf, "/mnt/exportfs/%d", f->mid);
-				unmount(0, buf);
-				psmap[f->mid] = 0;
-			}
-			if(f->f) {
-				freefile(f->f);
-				f->f = nil;
-			}
-			*l = f->next;
-			f->next = fidfree;
-			fidfree = f;
-			return 1;
-		}
-		l = &f->next;
-	}
-
-	return 0;	
-}
-
-Fid *
-newfid(int nr)
-{
-	Fid *new, **l;
-	int i;
-
-	l = &fidhash(nr);
-	for(new = *l; new; new = new->next)
-		if(new->nr == nr)
-			return 0;
-
-	if(fidfree == 0) {
-		fidfree = emallocz(sizeof(Fid) * Fidchunk);
-
-		for(i = 0; i < Fidchunk-1; i++)
-			fidfree[i].next = &fidfree[i+1];
-
-		fidfree[Fidchunk-1].next = 0;
-	}
-
-	new = fidfree;
-	fidfree = new->next;
-
-	memset(new, 0, sizeof(Fid));
-	new->next = *l;
-	*l = new;
-	new->nr = nr;
-	new->fid = -1;
-	new->mid = 0;
-
-	return new;	
-}
-
-Fsrpc *
-getsbuf(void)
-{
-	static int ap;
-	int look, rounds;
-	Fsrpc *wb;
-	int small_instead_of_fast = 1;
-
-	if(small_instead_of_fast)
-		ap = 0;	/* so we always start looking at the beginning and reuse buffers */
-
-	for(rounds = 0; rounds < 10; rounds++) {
-		for(look = 0; look < Nr_workbufs; look++) {
-			if(++ap == Nr_workbufs)
-				ap = 0;
-			if(Workq[ap].busy == 0)
-				break;
-		}
-
-		if(look == Nr_workbufs){
-			sleep(10 * rounds);
-			continue;
-		}
-
-		wb = &Workq[ap];
-		wb->pid = 0;
-		wb->canint = 0;
-		wb->flushtag = NOTAG;
-		wb->busy = 1;
-		if(wb->buf == nil)	/* allocate buffers dynamically to keep size down */
-			wb->buf = emallocz(messagesize);
-		return wb;
-	}
-	fatal("No more work buffers");
-	return nil;
-}
-
-void
-freefile(File *f)
-{
-	File *parent, *child;
-
-Loop:
-	f->ref--;
-	if(f->ref > 0)
-		return;
-	freecnt++;
-	if(f->ref < 0) abort();
-	DEBUG(DFD, "free %s\n", f->name);
-	/* delete from parent */
-	parent = f->parent;
-	if(parent->child == f)
-		parent->child = f->childlist;
-	else{
-		for(child=parent->child; child->childlist!=f; child=child->childlist)
-			if(child->childlist == nil)
-				fatal("bad child list");
-		child->childlist = f->childlist;
-	}
-	freeqid(f->qidt);
-	free(f->name);
-	f->name = nil;
-	free(f);
-	f = parent;
-	if(f != nil)
-		goto Loop;
-}
-
-File *
-file(File *parent, char *name)
-{
-	Dir *dir;
-	char *path;
-	File *f;
-
-	DEBUG(DFD, "\tfile: 0x%p %s name %s\n", parent, parent->name, name);
-
-	path = makepath(parent, name);
-	dir = dirstat(path);
-	free(path);
-	if(dir == nil)
-		return nil;
-
-	for(f = parent->child; f; f = f->childlist)
-		if(strcmp(name, f->name) == 0)
-			break;
-
-	if(f == nil){
-		f = emallocz(sizeof(File));
-		f->name = estrdup(name);
-
-		f->parent = parent;
-		f->childlist = parent->child;
-		parent->child = f;
-		parent->ref++;
-		f->ref = 0;
-		filecnt++;
-	}
-	f->ref++;
-	f->qid.type = dir->qid.type;
-	f->qid.vers = dir->qid.vers;
-	f->qidt = uniqueqid(dir);
-	f->qid.path = f->qidt->uniqpath;
-
-	f->inval = 0;
-
-	free(dir);
-
-	return f;
-}
-
-void
-initroot(void)
-{
-	Dir *dir;
-
-	root = emallocz(sizeof(File));
-	root->name = estrdup(".");
-
-	dir = dirstat(root->name);
-	if(dir == nil)
-		fatal("root stat");
-
-	root->ref = 1;
-	root->qid.vers = dir->qid.vers;
-	root->qidt = uniqueqid(dir);
-	root->qid.path = root->qidt->uniqpath;
-	root->qid.type = QTDIR;
-	free(dir);
-
-	psmpt = emallocz(sizeof(File));
-	psmpt->name = estrdup("/");
-
-	dir = dirstat(psmpt->name);
-	if(dir == nil)
-		return;
-
-	psmpt->ref = 1;
-	psmpt->qid.vers = dir->qid.vers;
-	psmpt->qidt = uniqueqid(dir);
-	psmpt->qid.path = psmpt->qidt->uniqpath;
-	free(dir);
-
-	psmpt = file(psmpt, "mnt");
-	if(psmpt == 0)
-		return;
-	psmpt = file(psmpt, "exportfs");
-}
-
-char*
-makepath(File *p, char *name)
-{
-	int i, n;
-	char *c, *s, *path, *seg[256];
-
-	seg[0] = name;
-	n = strlen(name)+2;
-	for(i = 1; i < 256 && p; i++, p = p->parent){
-		seg[i] = p->name;
-		n += strlen(p->name)+1;
-	}
-	path = malloc(n);
-	if(path == nil)
-		fatal("out of memory");
-	s = path;
-
-	while(i--) {
-		for(c = seg[i]; *c; c++)
-			*s++ = *c;
-		*s++ = '/';
-	}
-	while(s[-1] == '/')
-		s--;
-	*s = '\0';
-
-	return path;
-}
-
-int
-qidhash(vlong path)
-{
-	int h, n;
-
-	h = 0;
-	for(n=0; n<64; n+=Nqidbits){
-		h ^= path;
-		path >>= Nqidbits;
-	}
-	return h & (Nqidtab-1);
-}
-
-void
-freeqid(Qidtab *q)
-{
-	ulong h;
-	Qidtab *l;
-
-	q->ref--;
-	if(q->ref > 0)
-		return;
-	qfreecnt++;
-	h = qidhash(q->path);
-	if(qidtab[h] == q)
-		qidtab[h] = q->next;
-	else{
-		for(l=qidtab[h]; l->next!=q; l=l->next)
-			if(l->next == nil)
-				fatal("bad qid list");
-		l->next = q->next;
-	}
-	free(q);
-}
-
-Qidtab*
-qidlookup(Dir *d)
-{
-	ulong h;
-	Qidtab *q;
-
-	h = qidhash(d->qid.path);
-	for(q=qidtab[h]; q!=nil; q=q->next)
-		if(q->type==d->type && q->dev==d->dev && q->path==d->qid.path)
-			return q;
-	return nil;
-}
-
-int
-qidexists(vlong path)
-{
-	int h;
-	Qidtab *q;
-
-	for(h=0; h<Nqidtab; h++)
-		for(q=qidtab[h]; q!=nil; q=q->next)
-			if(q->uniqpath == path)
-				return 1;
-	return 0;
-}
-
-Qidtab*
-uniqueqid(Dir *d)
-{
-	ulong h;
-	vlong path;
-	Qidtab *q;
-
-	q = qidlookup(d);
-	if(q != nil){
-		q->ref++;
-		return q;
-	}
-	path = d->qid.path;
-	while(qidexists(path)){
-		DEBUG(DFD, "collision on %s\n", d->name);
-		/* collision: find a new one */
-		ncollision++;
-		path &= QIDPATH;
-		++newqid;
-		if(newqid >= (1<<16)){
-			DEBUG(DFD, "collision wraparound\n");
-			newqid = 1;
-		}
-		path |= newqid<<48;
-		DEBUG(DFD, "assign qid %.16llux\n", path);
-	}
-	q = mallocz(sizeof(Qidtab), 1);
-	if(q == nil)
-		fatal("no memory for qid table");
-	qidcnt++;
-	q->ref = 1;
-	q->type = d->type;
-	q->dev = d->dev;
-	q->path = d->qid.path;
-	q->uniqpath = path;
-	h = qidhash(d->qid.path);
-	q->next = qidtab[h];
-	qidtab[h] = q;
-	return q;
-}
-
-void
-fatal(char *s, ...)
-{
-	char buf[ERRMAX];
-	va_list arg;
-
-	if (s) {
-		va_start(arg, s);
-		vsnprint(buf, ERRMAX, s, arg);
-		va_end(arg);
-	}
-
-	/* Clear away the slave children */
-//	for(m = Proclist; m; m = m->next)
-//		postnote(PNPROC, m->pid, "kill");
-
-	DEBUG(DFD, "%s\n", buf);
-	if (s) 
-		sysfatal(buf);
-	else
-		sysfatal("");
-}
-