removing (outdated) drawterm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so removing this outdated copy.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, 1244 deletions

diff --git a/sys/src/cmd/unix/drawterm/kern/sysfile.c b/sys/src/cmd/unix/drawterm/kern/sysfile.c
deleted file mode 100644
index 18dadbcda..000000000
--- a/sys/src/cmd/unix/drawterm/kern/sysfile.c
+++ /dev/null
@@ -1,1244 +0,0 @@
-#include	"u.h"
-#include	"lib.h"
-#include	"dat.h"
-#include	"fns.h"
-#include	"error.h"
-
-#include	"user.h"
-#undef open
-#undef mount
-#undef read
-#undef write
-#undef seek
-#undef stat
-#undef wstat
-#undef remove
-#undef close
-#undef fstat
-#undef fwstat
-
-/*
- * The sys*() routines needn't poperror() as they return directly to syscall().
- */
-
-static void
-unlockfgrp(Fgrp *f)
-{
-	int ex;
-
-	ex = f->exceed;
-	f->exceed = 0;
-	unlock(&f->ref.lk);
-	if(ex)
-		pprint("warning: process exceeds %d file descriptors\n", ex);
-}
-
-int
-growfd(Fgrp *f, int fd)	/* fd is always >= 0 */
-{
-	Chan **newfd, **oldfd;
-
-	if(fd < f->nfd)
-		return 0;
-	if(fd >= f->nfd+DELTAFD)
-		return -1;	/* out of range */
-	/*
-	 * Unbounded allocation is unwise; besides, there are only 16 bits
-	 * of fid in 9P
-	 */
-	if(f->nfd >= 5000){
-    Exhausted:
-		print("no free file descriptors\n");
-		return -1;
-	}
-	newfd = malloc((f->nfd+DELTAFD)*sizeof(Chan*));
-	if(newfd == 0)
-		goto Exhausted;
-	oldfd = f->fd;
-	memmove(newfd, oldfd, f->nfd*sizeof(Chan*));
-	f->fd = newfd;
-	free(oldfd);
-	f->nfd += DELTAFD;
-	if(fd > f->maxfd){
-		if(fd/100 > f->maxfd/100)
-			f->exceed = (fd/100)*100;
-		f->maxfd = fd;
-	}
-	return 1;
-}
-
-/*
- *  this assumes that the fgrp is locked
- */
-int
-findfreefd(Fgrp *f, int start)
-{
-	int fd;
-
-	for(fd=start; fd<f->nfd; fd++)
-		if(f->fd[fd] == 0)
-			break;
-	if(fd >= f->nfd && growfd(f, fd) < 0)
-		return -1;
-	return fd;
-}
-
-int
-newfd(Chan *c)
-{
-	int fd;
-	Fgrp *f;
-
-	f = up->fgrp;
-	lock(&f->ref.lk);
-	fd = findfreefd(f, 0);
-	if(fd < 0){
-		unlockfgrp(f);
-		return -1;
-	}
-	if(fd > f->maxfd)
-		f->maxfd = fd;
-	f->fd[fd] = c;
-	unlockfgrp(f);
-	return fd;
-}
-
-int
-newfd2(int fd[2], Chan *c[2])
-{
-	Fgrp *f;
-
-	f = up->fgrp;
-	lock(&f->ref.lk);
-	fd[0] = findfreefd(f, 0);
-	if(fd[0] < 0){
-		unlockfgrp(f);
-		return -1;
-	}
-	fd[1] = findfreefd(f, fd[0]+1);
-	if(fd[1] < 0){
-		unlockfgrp(f);
-		return -1;
-	}
-	if(fd[1] > f->maxfd)
-		f->maxfd = fd[1];
-	f->fd[fd[0]] = c[0];
-	f->fd[fd[1]] = c[1];
-	unlockfgrp(f);
-
-	return 0;
-}
-
-Chan*
-fdtochan(int fd, int mode, int chkmnt, int iref)
-{
-	Chan *c;
-	Fgrp *f;
-
-	c = 0;
-	f = up->fgrp;
-
-	lock(&f->ref.lk);
-	if(fd<0 || f->nfd<=fd || (c = f->fd[fd])==0) {
-		unlock(&f->ref.lk);
-		error(Ebadfd);
-	}
-	if(iref)
-		incref(&c->ref);
-	unlock(&f->ref.lk);
-
-	if(chkmnt && (c->flag&CMSG)) {
-		if(iref)
-			cclose(c);
-		error(Ebadusefd);
-	}
-
-	if(mode<0 || c->mode==ORDWR)
-		return c;
-
-	if((mode&OTRUNC) && c->mode==OREAD) {
-		if(iref)
-			cclose(c);
-		error(Ebadusefd);
-	}
-
-	if((mode&~OTRUNC) != c->mode) {
-		if(iref)
-			cclose(c);
-		error(Ebadusefd);
-	}
-
-	return c;
-}
-
-int
-openmode(ulong o)
-{
-	o &= ~(OTRUNC|OCEXEC|ORCLOSE);
-	if(o > OEXEC)
-		error(Ebadarg);
-	if(o == OEXEC)
-		return OREAD;
-	return o;
-}
-
-long
-_sysfd2path(int fd, char *buf, uint nbuf)
-{
-	Chan *c;
-
-	c = fdtochan(fd, -1, 0, 1);
-
-	if(c->name == nil)
-		snprint(buf, nbuf, "<null>");
-	else
-		snprint(buf, nbuf, "%s", c->name->s);
-	cclose(c);
-	return 0;
-}
-
-long
-_syspipe(int fd[2])
-{
-	Chan *c[2];
-	Dev *d;
-	static char *datastr[] = {"data", "data1"};
-
-	d = devtab[devno('|', 0)];
-	c[0] = namec("#|", Atodir, 0, 0);
-	c[1] = 0;
-	fd[0] = -1;
-	fd[1] = -1;
-
-	if(waserror()){
-		cclose(c[0]);
-		if(c[1])
-			cclose(c[1]);
-		nexterror();
-	}
-	c[1] = cclone(c[0]);
-	if(walk(&c[0], datastr+0, 1, 1, nil) < 0)
-		error(Egreg);
-	if(walk(&c[1], datastr+1, 1, 1, nil) < 0)
-		error(Egreg);
-	c[0] = d->open(c[0], ORDWR);
-	c[1] = d->open(c[1], ORDWR);
-	if(newfd2(fd, c) < 0)
-		error(Enofd);
-	poperror();
-
-	return 0;
-}
-
-long
-_sysdup(int fd0, int fd1)
-{
-	int fd;
-	Chan *c, *oc;
-	Fgrp *f = up->fgrp;
-
-	/*
-	 * Close after dup'ing, so date > #d/1 works
-	 */
-	c = fdtochan(fd0, -1, 0, 1);
-	fd = fd1;
-	if(fd != -1){
-		lock(&f->ref.lk);
-		if(fd<0 || growfd(f, fd)<0) {
-			unlockfgrp(f);
-			cclose(c);
-			error(Ebadfd);
-		}
-		if(fd > f->maxfd)
-			f->maxfd = fd;
-
-		oc = f->fd[fd];
-		f->fd[fd] = c;
-		unlockfgrp(f);
-		if(oc)
-			cclose(oc);
-	}else{
-		if(waserror()) {
-			cclose(c);
-			nexterror();
-		}
-		fd = newfd(c);
-		if(fd < 0)
-			error(Enofd);
-		poperror();
-	}
-
-	return fd;
-}
-
-long
-_sysopen(char *name, int mode)
-{
-	int fd;
-	Chan *c = 0;
-
-	openmode(mode);	/* error check only */
-	if(waserror()){
-		if(c)
-			cclose(c);
-		nexterror();
-	}
-	c = namec(name, Aopen, mode, 0);
-	fd = newfd(c);
-	if(fd < 0)
-		error(Enofd);
-	poperror();
-	return fd;
-}
-
-void
-fdclose(int fd, int flag)
-{
-	int i;
-	Chan *c;
-	Fgrp *f = up->fgrp;
-
-	lock(&f->ref.lk);
-	c = f->fd[fd];
-	if(c == 0){
-		/* can happen for users with shared fd tables */
-		unlock(&f->ref.lk);
-		return;
-	}
-	if(flag){
-		if(c==0 || !(c->flag&flag)){
-			unlock(&f->ref.lk);
-			return;
-		}
-	}
-	f->fd[fd] = 0;
-	if(fd == f->maxfd)
-		for(i=fd; --i>=0 && f->fd[i]==0; )
-			f->maxfd = i;
-
-	unlock(&f->ref.lk);
-	cclose(c);
-}
-
-long
-_sysclose(int fd)
-{
-	fdtochan(fd, -1, 0, 0);
-	fdclose(fd, 0);
-
-	return 0;
-}
-
-long
-unionread(Chan *c, void *va, long n)
-{
-	int i;
-	long nr;
-	Mhead *m;
-	Mount *mount;
-
-	qlock(&c->umqlock);
-	m = c->umh;
-	rlock(&m->lock);
-	mount = m->mount;
-	/* bring mount in sync with c->uri and c->umc */
-	for(i = 0; mount != nil && i < c->uri; i++)
-		mount = mount->next;
-
-	nr = 0;
-	while(mount != nil) {
-		/* Error causes component of union to be skipped */
-		if(mount->to && !waserror()) {
-			if(c->umc == nil){
-				c->umc = cclone(mount->to);
-				c->umc = devtab[c->umc->type]->open(c->umc, OREAD);
-			}
-	
-			nr = devtab[c->umc->type]->read(c->umc, va, n, c->umc->offset);
-			c->umc->offset += nr;
-			poperror();
-		}
-		if(nr > 0)
-			break;
-
-		/* Advance to next element */
-		c->uri++;
-		if(c->umc) {
-			cclose(c->umc);
-			c->umc = nil;
-		}
-		mount = mount->next;
-	}
-	runlock(&m->lock);
-	qunlock(&c->umqlock);
-	return nr;
-}
-
-static long
-kread(int fd, void *buf, long n, vlong *offp)
-{
-	int dir;
-	Chan *c;
-	vlong off;
-
-	c = fdtochan(fd, OREAD, 1, 1);
-
-	if(waserror()) {
-		cclose(c);
-		nexterror();
-	}
-
-	dir = c->qid.type&QTDIR;
-	/*
-	 * The offset is passed through on directories, normally. sysseek complains but
-	 * pread is used by servers and e.g. exportfs that shouldn't need to worry about this issue.
-	 */
-
-	if(offp == nil)	/* use and maintain channel's offset */
-		off = c->offset;
-	else
-		off = *offp;
-
-	if(off < 0)
-		error(Enegoff);
-
-	if(dir && c->umh)
-		n = unionread(c, buf, n);
-	else
-		n = devtab[c->type]->read(c, buf, n, off);
-
-	if(offp == nil){
-		lock(&c->ref.lk);
-		c->offset += n;
-		unlock(&c->ref.lk);
-	}
-
-	poperror();
-	cclose(c);
-
-	return n;
-}
-
-/* name conflicts with netbsd
-long
-_sys_read(int fd, void *buf, long n)
-{
-	return kread(fd, buf, n, nil);
-}
-*/
-
-long
-_syspread(int fd, void *buf, long n, vlong off)
-{
-	if(off == ((uvlong) ~0))
-		return kread(fd, buf, n, nil);
-	return kread(fd, buf, n, &off);
-}
-
-static long
-kwrite(int fd, void *buf, long nn, vlong *offp)
-{
-	Chan *c;
-	long m, n;
-	vlong off;
-
-	n = 0;
-	c = fdtochan(fd, OWRITE, 1, 1);
-	if(waserror()) {
-		if(offp == nil){
-			lock(&c->ref.lk);
-			c->offset -= n;
-			unlock(&c->ref.lk);
-		}
-		cclose(c);
-		nexterror();
-	}
-
-	if(c->qid.type & QTDIR)
-		error(Eisdir);
-
-	n = nn;
-
-	if(offp == nil){	/* use and maintain channel's offset */
-		lock(&c->ref.lk);
-		off = c->offset;
-		c->offset += n;
-		unlock(&c->ref.lk);
-	}else
-		off = *offp;
-
-	if(off < 0)
-		error(Enegoff);
-
-	m = devtab[c->type]->write(c, buf, n, off);
-
-	if(offp == nil && m < n){
-		lock(&c->ref.lk);
-		c->offset -= n - m;
-		unlock(&c->ref.lk);
-	}
-
-	poperror();
-	cclose(c);
-
-	return m;
-}
-
-long
-sys_write(int fd, void *buf, long n)
-{
-	return kwrite(fd, buf, n, nil);
-}
-
-long
-_syspwrite(int fd, void *buf, long n, vlong off)
-{
-	if(off == ((uvlong) ~0))
-		return kwrite(fd, buf, n, nil);
-	return kwrite(fd, buf, n, &off);
-}
-
-static vlong
-_sysseek(int fd, vlong off, int whence)
-{
-	Chan *c;
-	uchar buf[sizeof(Dir)+100];
-	Dir dir;
-	int n;
-
-	c = fdtochan(fd, -1, 1, 1);
-	if(waserror()){
-		cclose(c);
-		nexterror();
-	}
-	if(devtab[c->type]->dc == '|')
-		error(Eisstream);
-
-	switch(whence){
-	case 0:
-		if((c->qid.type & QTDIR) && off != 0)
-			error(Eisdir);
-		if(off < 0)
-			error(Enegoff);
-		c->offset = off;
-		break;
-
-	case 1:
-		if(c->qid.type & QTDIR)
-			error(Eisdir);
-		lock(&c->ref.lk);	/* lock for read/write update */
-		off = off + c->offset;
-		if(off < 0)
-			error(Enegoff);
-		c->offset = off;
-		unlock(&c->ref.lk);
-		break;
-
-	case 2:
-		if(c->qid.type & QTDIR)
-			error(Eisdir);
-		n = devtab[c->type]->stat(c, buf, sizeof buf);
-		if(convM2D(buf, n, &dir, nil) == 0)
-			error("internal error: stat error in seek");
-		off = dir.length + off;
-		if(off < 0)
-			error(Enegoff);
-		c->offset = off;
-		break;
-
-	default:
-		error(Ebadarg);
-	}
-	c->uri = 0;
-	c->dri = 0;
-	cclose(c);
-	poperror();
-	return off;
-}
-
-void
-validstat(uchar *s, int n)
-{
-	int m;
-	char buf[64];
-
-	if(statcheck(s, n) < 0)
-		error(Ebadstat);
-	/* verify that name entry is acceptable */
-	s += STATFIXLEN - 4*BIT16SZ;	/* location of first string */
-	/*
-	 * s now points at count for first string.
-	 * if it's too long, let the server decide; this is
-	 * only for his protection anyway. otherwise
-	 * we'd have to allocate and waserror.
-	 */
-	m = GBIT16(s);
-	s += BIT16SZ;
-	if(m+1 > sizeof buf)
-		return;
-	memmove(buf, s, m);
-	buf[m] = '\0';
-	/* name could be '/' */
-	if(strcmp(buf, "/") != 0)
-		validname(buf, 0);
-}
-
-long
-_sysfstat(int fd, void *buf, long n)
-{
-	Chan *c;
-	uint l;
-
-	l = n;
-	validaddr(buf, l, 1);
-	c = fdtochan(fd, -1, 0, 1);
-	if(waserror()) {
-		cclose(c);
-		nexterror();
-	}
-	l = devtab[c->type]->stat(c, buf, l);
-	poperror();
-	cclose(c);
-	return l;
-}
-
-long
-_sysstat(char *name, void *buf, long n)
-{
-	Chan *c;
-	uint l;
-
-	l = n;
-	validaddr(buf, l, 1);
-	validaddr(name, 1, 0);
-	c = namec(name, Aaccess, 0, 0);
-	if(waserror()){
-		cclose(c);
-		nexterror();
-	}
-	l = devtab[c->type]->stat(c, buf, l);
-	poperror();
-	cclose(c);
-	return l;
-}
-
-long
-_syschdir(char *name)
-{
-	Chan *c;
-
-	validaddr(name, 1, 0);
-
-	c = namec(name, Atodir, 0, 0);
-	cclose(up->dot);
-	up->dot = c;
-	return 0;
-}
-
-long
-bindmount(int ismount, int fd, int afd, char* arg0, char* arg1, ulong flag, char* spec)
-{
-	int ret;
-	Chan *c0, *c1, *ac, *bc;
-	struct{
-		Chan	*chan;
-		Chan	*authchan;
-		char	*spec;
-		int	flags;
-	}bogus;
-
-	if((flag&~MMASK) || (flag&MORDER)==(MBEFORE|MAFTER))
-		error(Ebadarg);
-
-	bogus.flags = flag & MCACHE;
-
-	if(ismount){
-		if(up->pgrp->noattach)
-			error(Enoattach);
-
-		ac = nil;
-		bc = fdtochan(fd, ORDWR, 0, 1);
-		if(waserror()) {
-			if(ac)
-				cclose(ac);
-			cclose(bc);
-			nexterror();
-		}
-
-		if(afd >= 0)
-			ac = fdtochan(afd, ORDWR, 0, 1);
-
-		bogus.chan = bc;
-		bogus.authchan = ac;
-
-		validaddr((ulong)spec, 1, 0);
-		bogus.spec = spec;
-		if(waserror())
-			error(Ebadspec);
-		validname(spec, 1);
-		poperror();
-
-		ret = devno('M', 0);
-		c0 = devtab[ret]->attach((char*)&bogus);
-
-		poperror();
-		if(ac)
-			cclose(ac);
-		cclose(bc);
-	}else{
-		bogus.spec = 0;
-		validaddr((ulong)arg0, 1, 0);
-		c0 = namec(arg0, Abind, 0, 0);
-	}
-
-	if(waserror()){
-		cclose(c0);
-		nexterror();
-	}
-
-	validaddr((ulong)arg1, 1, 0);
-	c1 = namec(arg1, Amount, 0, 0);
-	if(waserror()){
-		cclose(c1);
-		nexterror();
-	}
-
-	ret = cmount(&c0, c1, flag, bogus.spec);
-
-	poperror();
-	cclose(c1);
-	poperror();
-	cclose(c0);
-	if(ismount)
-		fdclose(fd, 0);
-
-	return ret;
-}
-
-long
-_sysbind(char *old, char *new, int flag)
-{
-	return bindmount(0, -1, -1, old, new, flag, nil);
-}
-
-long
-_sysmount(int fd, int afd, char *new, int flag, char *spec)
-{
-	return bindmount(1, fd, afd, nil, new, flag, spec);
-}
-
-long
-_sysunmount(char *old, char *new)
-{
-	Chan *cmount, *cmounted;
-
-	cmounted = 0;
-
-	cmount = namec(new, Amount, 0, 0);
-
-	if(old) {
-		if(waserror()) {
-			cclose(cmount);
-			nexterror();
-		}
-		validaddr(old, 1, 0);
-		/*
-		 * This has to be namec(..., Aopen, ...) because
-		 * if arg[0] is something like /srv/cs or /fd/0,
-		 * opening it is the only way to get at the real
-		 * Chan underneath.
-		 */
-		cmounted = namec(old, Aopen, OREAD, 0);
-		poperror();
-	}
-
-	if(waserror()) {
-		cclose(cmount);
-		if(cmounted)
-			cclose(cmounted);
-		nexterror();
-	}
-
-	cunmount(cmount, cmounted);
-	cclose(cmount);
-	if(cmounted)
-		cclose(cmounted);
-	poperror();
-	return 0;
-}
-
-long
-_syscreate(char *name, int mode, ulong perm)
-{
-	int fd;
-	Chan *c = 0;
-
-	openmode(mode&~OEXCL);	/* error check only; OEXCL okay here */
-	if(waserror()) {
-		if(c)
-			cclose(c);
-		nexterror();
-	}
-	validaddr(name, 1, 0);
-	c = namec(name, Acreate, mode, perm);
-	fd = newfd(c);
-	if(fd < 0)
-		error(Enofd);
-	poperror();
-	return fd;
-}
-
-long
-_sysremove(char *name)
-{
-	Chan *c;
-
-	c = namec(name, Aremove, 0, 0);
-	if(waserror()){
-		c->type = 0;	/* see below */
-		cclose(c);
-		nexterror();
-	}
-	devtab[c->type]->remove(c);
-	/*
-	 * Remove clunks the fid, but we need to recover the Chan
-	 * so fake it up.  rootclose() is known to be a nop.
-	 */
-	c->type = 0;
-	poperror();
-	cclose(c);
-	return 0;
-}
-
-long
-_syswstat(char *name, void *buf, long n)
-{
-	Chan *c;
-	uint l;
-
-	l = n;
-	validstat(buf, l);
-	validaddr(name, 1, 0);
-	c = namec(name, Aaccess, 0, 0);
-	if(waserror()){
-		cclose(c);
-		nexterror();
-	}
-	l = devtab[c->type]->wstat(c, buf, l);
-	poperror();
-	cclose(c);
-	return l;
-}
-
-long
-_sysfwstat(int fd, void *buf, long n)
-{
-	Chan *c;
-	uint l;
-
-	l = n;
-	validaddr(buf, l, 0);
-	validstat(buf, l);
-	c = fdtochan(fd, -1, 1, 1);
-	if(waserror()) {
-		cclose(c);
-		nexterror();
-	}
-	l = devtab[c->type]->wstat(c, buf, l);
-	poperror();
-	cclose(c);
-	return l;
-}
-
-
-static void
-starterror(void)
-{
-	assert(up->nerrlab == 0);
-}
-
-static void
-_syserror(void)
-{
-	char *p;
-
-	p = up->syserrstr;
-	up->syserrstr = up->errstr;
-	up->errstr = p;
-}
-
-static void
-enderror(void)
-{
-	assert(up->nerrlab == 1);
-	poperror();
-}
-
-int
-sysbind(char *old, char *new, int flag)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysbind(old, new, flag);
-	enderror();
-	return n;
-}
-
-int
-syschdir(char *path)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syschdir(path);
-	enderror();
-	return n;
-}
-
-int
-sysclose(int fd)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysclose(fd);
-	enderror();
-	return n;
-}
-
-int
-syscreate(char *name, int mode, ulong perm)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syscreate(name, mode, perm);
-	enderror();
-	return n;
-}
-
-int
-sysdup(int fd0, int fd1)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysdup(fd0, fd1);
-	enderror();
-	return n;
-}
-
-int
-sysfstat(int fd, uchar *buf, int n)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysfstat(fd, buf, n);
-	enderror();
-	return n;
-}
-
-int
-sysfwstat(int fd, uchar *buf, int n)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysfwstat(fd, buf, n);
-	enderror();
-	return n;
-}
-
-int
-sysmount(int fd, int afd, char *new, int flag, char *spec)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysmount(fd, afd, new, flag, spec);
-	enderror();
-	return n;
-}
-
-int
-sysunmount(char *old, char *new)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysunmount(old, new);
-	enderror();
-	return n;
-}
-
-int
-sysopen(char *name, int mode)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysopen(name, mode);
-	enderror();
-	return n;
-}
-
-int
-syspipe(int *fd)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syspipe(fd);
-	enderror();
-	return n;
-}
-
-long
-syspread(int fd, void *buf, long n, vlong off)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syspread(fd, buf, n, off);
-	enderror();
-	return n;
-}
-
-long
-syspwrite(int fd, void *buf, long n, vlong off)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syspwrite(fd, buf, n, off);
-	enderror();
-	return n;
-}
-
-long
-sysread(int fd, void *buf, long n)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syspread(fd, buf, n, (uvlong) ~0);
-	enderror();
-	return n;
-}
-
-int
-sysremove(char *path)
-{
-	int n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysremove(path);
-	enderror();
-	return n;
-}
-
-vlong
-sysseek(int fd, vlong off, int whence)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	off = _sysseek(fd, off, whence);
-	enderror();
-	return off;
-}
-
-int
-sysstat(char *name, uchar *buf, int n)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _sysstat(name, buf, n);
-	enderror();
-	return n;
-}
-
-long
-syswrite(int fd, void *buf, long n)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syspwrite(fd, buf, n, (uvlong) ~0);
-	enderror();
-	return n;
-}
-
-int
-syswstat(char *name, uchar *buf, int n)
-{
-	starterror();
-	if(waserror()){
-		_syserror();
-		return -1;
-	}
-	n = _syswstat(name, buf, n);
-	enderror();
-	return n;
-}
-
-void
-werrstr(char *f, ...)
-{
-	char buf[ERRMAX];
-	va_list arg;
-
-	va_start(arg, f);
-	vsnprint(buf, sizeof buf, f, arg);
-	va_end(arg);
-
-	if(up->nerrlab)
-		strecpy(up->errstr, up->errstr+ERRMAX, buf);
-	else
-		strecpy(up->syserrstr, up->syserrstr+ERRMAX, buf);
-}
-
-int
-__errfmt(Fmt *fmt)
-{
-	if(up->nerrlab)
-		return fmtstrcpy(fmt, up->errstr);
-	else
-		return fmtstrcpy(fmt, up->syserrstr);
-}
-
-int
-errstr(char *buf, uint n)
-{
-	char tmp[ERRMAX];
-	char *p;
-
-	p = up->nerrlab ? up->errstr : up->syserrstr;
-	memmove(tmp, p, ERRMAX);
-	utfecpy(p, p+ERRMAX, buf);
-	utfecpy(buf, buf+n, tmp);
-	return strlen(buf);
-}
-
-int
-rerrstr(char *buf, uint n)
-{
-	char *p;
-
-	p = up->nerrlab ? up->errstr : up->syserrstr;
-	utfecpy(buf, buf+n, p);
-	return strlen(buf);
-}
-
-void*
-_sysrendezvous(void* arg0, void* arg1)
-{
-	void *tag, *val;
-	Proc *p, **l;
-
-	tag = arg0;
-	l = &REND(up->rgrp, (uintptr)tag);
-	up->rendval = (void*)~0;
-
-	lock(&up->rgrp->ref.lk);
-	for(p = *l; p; p = p->rendhash) {
-		if(p->rendtag == tag) {
-			*l = p->rendhash;
-			val = p->rendval;
-			p->rendval = arg1;
-
-			while(p->mach != 0)
-				;
-			procwakeup(p);
-			unlock(&up->rgrp->ref.lk);
-			return val;
-		}
-		l = &p->rendhash;
-	}
-
-	/* Going to sleep here */
-	up->rendtag = tag;
-	up->rendval = arg1;
-	up->rendhash = *l;
-	*l = up;
-	up->state = Rendezvous;
-	unlock(&up->rgrp->ref.lk);
-
-	procsleep();
-
-	return up->rendval;
-}
-
-void*
-sysrendezvous(void *tag, void *val)
-{
-	void *n;
-
-	starterror();
-	if(waserror()){
-		_syserror();
-		return (void*)~0;
-	}
-	n = _sysrendezvous(tag, val);
-	enderror();
-	return n;
-}