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/* Copyright (C) 2003 Russ Cox, Massachusetts Institute of Technology */
/* See COPYRIGHT */
#include <u.h>
#include <libc.h>
#include <fcall.h>
#include <fs.h>
#include "fsimpl.h"
long
fspwrite(Fid *fd, void *buf, long n, vlong offset)
{
Fcall tx, rx;
void *freep;
tx.type = Tread;
if(offset == -1){
qlock(&fd->lk);
tx.offset = fd->offset;
fd->offset += n;
qunlock(&fd->lk);
}else
tx.offset = offset;
tx.count = n;
tx.data = buf;
fsrpc(fd->fs, &tx, &rx, &freep);
if(rx.type == Rerror){
if(offset == -1){
qlock(&fd->lk);
fd->offset -= n;
qunlock(&fd->lk);
}
werrstr("%s", rx.ename);
free(freep);
return -1;
}
free(freep);
return rx.count;
}
long
fswrite(Fid *fd, void *buf, long n)
{
return fspwrite(fd, buf, n, -1);
}
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