void
Xattach(Fsrpc *t)
{
int i, nfd;
Fcall rhdr;
Fid *f;
char buf[128];
f = newfid(t->work.fid);
if(f == 0) {
reply(&t->work, &rhdr, Ebadfid);
t->busy = 0;
return;
}
if(srvfd >= 0){
if(psmpt == 0){
Nomount:
reply(&t->work, &rhdr, Enopsmt);
t->busy = 0;
freefid(t->work.fid);
return;
}
for(i=0; i<Npsmpt; i++)
if(psmap[i] == 0)
break;
if(i >= Npsmpt)
goto Nomount;
sprint(buf, "%d", i);
f->f = file(psmpt, buf);
if(f->f == nil)
goto Nomount;
sprint(buf, "/mnt/exportfs/%d", i);
nfd = dup(srvfd, -1);
if(amount(nfd, buf, MREPL|MCREATE, t->work.aname) < 0){
errstr(buf, sizeof buf);
reply(&t->work, &rhdr, buf);
t->busy = 0;
freefid(t->work.fid);
close(nfd);
return;
}
psmap[i] = 1;
f->mid = i;
}else{
f->f = root;
f->f->ref++;
}
rhdr.qid = f->f->qid;
reply(&t->work, &rhdr, 0);
t->busy = 0;
}
char*
rwalk(Job *job, Mfile *mf)
{
int i, nelems;
char *err;
char **elems;
Mfile *nmf;
Qid qid;
err = 0;
nmf = nil;
elems = job->request.wname;
nelems = job->request.nwname;
job->reply.nwqid = 0;
if(job->request.newfid != job->request.fid){
/* clone fid */
nmf = copyfid(mf, job->request.newfid);
if(nmf == nil){
err = "clone bad newfid";
goto send;
}
mf = nmf;
}
/* else nmf will be nil */
qid = mf->qid;
if(nelems > 0)
/* walk fid */
for(i=0; i<nelems && i<MAXWELEM; i++){
if((qid.type & QTDIR) == 0){
err = "not a directory";
break;
}
if (strcmp(elems[i], "..") == 0 ||
strcmp(elems[i], ".") == 0){
qid.type = QTDIR;
qid.path = Qdir;
Found:
job->reply.wqid[i] = qid;
job->reply.nwqid++;
continue;
}
if(strcmp(elems[i], "dns") == 0){
qid.type = QTFILE;
qid.path = Qdns;
goto Found;
}
err = "file does not exist";
break;
}
send:
if(nmf != nil && (err!=nil || job->reply.nwqid<nelems))
freefid(nmf);
if(err == nil)
mf->qid = qid;
sendmsg(job, err);
return err;
}
void
rclunk(Job *job, Mfile *mf)
{
freefid(mf);
sendmsg(job, 0);
}