/* Copyright (C) 2003 Russ Cox, Massachusetts Institute of Technology *//* See COPYRIGHT */ #include <u.h>#include <libc.h>#include <fcall.h>#include <9pclient.h>#include "fsimpl.h" static long_fspwrite(CFid *fid, void *buf, long n, vlong offset){	Fcall tx, rx;	void *freep; 	tx.type = Twrite;	tx.fid = fid->fid;	if(offset == -1){		qlock(&fid->lk);		tx.offset = fid->offset;		qunlock(&fid->lk);	}else		tx.offset = offset;	tx.count = n;	tx.data = buf; 	if(_fsrpc(fid->fs, &tx, &rx, &freep) < 0)		return -1;	if(rx.type == Rerror){		werrstr("%s", rx.ename);		free(freep);		return -1;	}	if(offset == -1 && rx.count){		qlock(&fid->lk);		fid->offset += rx.count;		qunlock(&fid->lk);	}	free(freep);	return rx.count;} longfspwrite(CFid *fid, void *buf, long n, vlong offset){	long tot, want, got, first;	uint msize; 	msize = fid->fs->msize - IOHDRSZ;	tot = 0;	first = 1;	while(tot < n || first){		want = n - tot;		if(want > msize)			want = msize;		got = _fspwrite(fid, (char*)buf+tot, want, offset);		first = 0;		if(got < 0){			if(tot == 0)				return got;			break;		}		tot += got;		if(offset != -1)			offset += got;	}	return tot;} longfswrite(CFid *fid, void *buf, long n){	return fspwrite(fid, buf, n, -1);}