void
np_fid_decref(Npfid *fid)
{
if (!fid)
return;
fid->refcount--;
if (!fid->refcount)
np_fid_destroy(fid);
}
void
np_fid_decref(Npfid *fid)
{
int n;
if (!fid)
return;
pthread_mutex_lock(&fid->lock);
n = --fid->refcount;
pthread_mutex_unlock(&fid->lock);
if (!n)
np_fid_destroy(fid);
}
/* Look up operation's fid and assign it to req->fid.
* This is done before the request is handed off to a worker, with
* the plan of using fid data in scheduling work.
* The fid refcount is incremented here, then decremented in np_respond ().
*/
static void
np_preprocess_request(Npreq *req)
{
Npfcall *tc = req->tcall;
Npconn *conn = req->conn;
switch (tc->type) {
case P9_TSTATFS:
req->fid = np_fid_find (conn, tc->u.tstatfs.fid);
break;
case P9_TLOPEN:
req->fid = np_fid_find (conn, tc->u.tlopen.fid);
break;
case P9_TLCREATE:
req->fid = np_fid_find (conn, tc->u.tlcreate.fid);
break;
case P9_TSYMLINK:
req->fid = np_fid_find (conn, tc->u.tsymlink.fid);
break;
case P9_TMKNOD:
req->fid = np_fid_find (conn, tc->u.tmknod.fid);
break;
case P9_TRENAME:
req->fid = np_fid_find (conn, tc->u.trename.fid);
break;
case P9_TREADLINK:
req->fid = np_fid_find (conn, tc->u.treadlink.fid);
break;
case P9_TGETATTR:
req->fid = np_fid_find (conn, tc->u.tgetattr.fid);
break;
case P9_TSETATTR:
req->fid = np_fid_find (conn, tc->u.tsetattr.fid);
break;
case P9_TXATTRWALK:
req->fid = np_fid_find (conn, tc->u.txattrwalk.fid);
break;
case P9_TXATTRCREATE:
req->fid = np_fid_find (conn, tc->u.txattrcreate.fid);
break;
case P9_TREADDIR:
req->fid = np_fid_find (conn, tc->u.treaddir.fid);
break;
case P9_TFSYNC:
req->fid = np_fid_find (conn, tc->u.tfsync.fid);
break;
case P9_TLOCK:
req->fid = np_fid_find (conn, tc->u.tlock.fid);
break;
case P9_TGETLOCK:
req->fid = np_fid_find (conn, tc->u.tgetlock.fid);
break;
case P9_TLINK:
req->fid = np_fid_find (conn, tc->u.tlink.dfid);
break;
case P9_TMKDIR:
req->fid = np_fid_find (conn, tc->u.tmkdir.fid);
break;
case P9_TVERSION:
break;
case P9_TAUTH:
if (np_fid_find (conn, tc->u.tauth.afid))
break;
req->fid = np_fid_create (conn, tc->u.tauth.afid, NULL);
if (!req->fid)
break;
req->fid->aname = np_strdup (&tc->u.tauth.aname);
if (!req->fid->aname) {
np_fid_destroy(req->fid);
req->fid = NULL;
}
/* XXX leave fid->tpool NULL for now as auth
* can be handled in the default thread pool
* without risk of deadlock.
*/
break;
case P9_TATTACH:
if (np_fid_find (conn, tc->u.tattach.fid))
break;
req->fid = np_fid_create (conn, tc->u.tattach.fid,NULL);
if (!req->fid)
break;
req->fid->aname = np_strdup (&tc->u.tattach.aname);
if (!req->fid->aname) {
np_fid_destroy(req->fid);
req->fid = NULL;
}
np_tpool_select (req);
break;
case P9_TFLUSH:
break;
case P9_TWALK:
req->fid = np_fid_find (conn, tc->u.twalk.fid);
break;
case P9_TREAD:
req->fid = np_fid_find (conn, tc->u.tread.fid);
break;
case P9_TWRITE:
req->fid = np_fid_find (conn, tc->u.twrite.fid);
break;
case P9_TCLUNK:
req->fid = np_fid_find (conn, tc->u.tclunk.fid);
break;
case P9_TREMOVE:
req->fid = np_fid_find (conn, tc->u.tremove.fid);
break;
default:
break;
}
if (req->fid)
np_fid_incref (req->fid);
}
