Untangle the nfs send and receive queue locking a little. One lock
routine was [ab]used for two different things, and you couldn't tell from the wait channel which one had wedged. Catch a few things missing from NFS_NOSERVER.
This commit is contained in:
Peter Wemm
parent
d1bf5d56b6
commit
803870b48d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=44246
@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs.h 8.4 (Berkeley) 5/1/95
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* $Id: nfs.h,v 1.43 1998/08/23 03:07:16 wollman Exp $
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* $Id: nfs.h,v 1.44 1998/09/07 05:42:15 bde Exp $
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*/
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#ifndef _NFS_NFS_H_
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@ -594,8 +594,10 @@ int nfs_send __P((struct socket *, struct sockaddr *, struct mbuf *,
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int nfs_rephead __P((int, struct nfsrv_descript *, struct nfssvc_sock *,
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int, int, u_quad_t *, struct mbuf **, struct mbuf **,
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caddr_t *));
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int nfs_sndlock __P((int *, int *, struct nfsreq *));
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void nfs_sndunlock __P((int *, int *));
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int nfs_sndlock __P((struct nfsreq *));
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void nfs_sndunlock __P((struct nfsreq *));
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int nfs_slplock __P((struct nfssvc_sock *, int));
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void nfs_slpunlock __P((struct nfssvc_sock *));
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int nfs_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
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int nfs_vinvalbuf __P((struct vnode *, int, struct ucred *, struct proc *,
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int));
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_nqlease.c 8.9 (Berkeley) 5/20/95
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* $Id: nfs_nqlease.c,v 1.38 1998/09/05 15:17:33 bde Exp $
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* $Id: nfs_nqlease.c,v 1.39 1998/10/31 15:31:25 peter Exp $
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*/
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@ -81,13 +81,15 @@ time_t nqnfsstarttime = (time_t)0;
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int nqsrv_clockskew = NQ_CLOCKSKEW;
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int nqsrv_writeslack = NQ_WRITESLACK;
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int nqsrv_maxlease = NQ_MAXLEASE;
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#ifndef NFS_NOSERVER
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static int nqsrv_maxnumlease = NQ_MAXNUMLEASE;
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#endif
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struct vop_lease_args;
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#ifndef NFS_NOSERVER
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static int nqsrv_cmpnam __P((struct nfssvc_sock *, struct sockaddr *,
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struct nqhost *));
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extern void nqnfs_lease_updatetime __P((int deltat));
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static int nqnfs_vacated __P((struct vnode *vp, struct ucred *cred));
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static void nqsrv_addhost __P((struct nqhost *lph, struct nfssvc_sock *slp,
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struct sockaddr *nam));
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@ -99,6 +101,8 @@ static void nqsrv_send_eviction __P((struct vnode *vp, struct nqlease *lp,
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struct ucred *cred));
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static void nqsrv_unlocklease __P((struct nqlease *lp));
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static void nqsrv_waitfor_expiry __P((struct nqlease *lp));
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#endif
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extern void nqnfs_lease_updatetime __P((int deltat));
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/*
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* Signifies which rpcs can have piggybacked lease requests
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@ -366,7 +370,6 @@ nqnfs_vop_lease_check(ap)
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return (0);
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}
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#endif /* NFS_NOSERVER */
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/*
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* Add a host to an nqhost structure for a lease.
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@ -560,15 +563,13 @@ nqsrv_send_eviction(vp, lp, slp, nam, cred)
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}
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if (((lph->lph_flag & (LC_UDP | LC_CLTP)) == 0 &&
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(lph->lph_slp->ns_flag & SLP_VALID) == 0) ||
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(solockp && (*solockp & NFSSTA_SNDLOCK)))
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(nfs_slplock(lph->lph_slp, 0) == 0))
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m_freem(m);
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else {
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if (solockp)
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*solockp |= NFSSTA_SNDLOCK;
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(void) nfs_send(so, nam2, m,
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(struct nfsreq *)0);
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if (solockp)
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nfs_sndunlock(solockp, solockp);
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nfs_slpunlock(lph->lph_slp);
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}
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if (lph->lph_flag & LC_UDP)
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FREE(nam2, M_SONAME);
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@ -629,8 +630,6 @@ nqsrv_waitfor_expiry(lp)
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}
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}
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#ifndef NFS_NOSERVER
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/*
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* Nqnfs server timer that maintains the server lease queue.
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* Scan the lease queue for expired entries:
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@ -899,6 +898,7 @@ nqnfs_getlease(vp, rwflag, cred, p)
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return (error);
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}
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#ifndef NFS_NOSERVER
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/*
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* Client vacated message function.
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*/
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@ -940,17 +940,14 @@ nqnfs_vacated(vp, cred)
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myrep.r_flags = 0;
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myrep.r_nmp = nmp;
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if (nmp->nm_soflags & PR_CONNREQUIRED)
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(void) nfs_sndlock(&nmp->nm_flag, &nmp->nm_state,
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(struct nfsreq *)0);
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(void) nfs_sndlock(&myrep);
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(void) nfs_send(nmp->nm_so, nmp->nm_nam, m, &myrep);
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if (nmp->nm_soflags & PR_CONNREQUIRED)
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nfs_sndunlock(&nmp->nm_flag, &nmp->nm_state);
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nfs_sndunlock(&myrep);
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nfsmout:
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return (error);
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}
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#ifndef NFS_NOSERVER
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/*
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* Called for client side callbacks
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*/
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@ -1225,6 +1222,7 @@ nqnfs_lease_updatetime(deltat)
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simple_unlock(&mountlist_slock);
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}
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#ifndef NFS_NOSERVER
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/*
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* Lock a server lease.
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*/
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@ -1253,6 +1251,7 @@ nqsrv_unlocklease(lp)
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if (lp->lc_flag & LC_WANTED)
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wakeup((caddr_t)lp);
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}
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#endif /* NFS_NOSERVER */
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/*
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* Update a client lease.
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
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*
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* @(#)nfs_socket.c 8.5 (Berkeley) 3/30/95
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* $Id: nfs_socket.c,v 1.48 1998/12/07 21:58:44 archie Exp $
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* $Id: nfs_socket.c,v 1.49 1998/12/30 00:37:43 hoek Exp $
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*/
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/*
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@ -137,7 +137,7 @@ struct callout_handle nfs_timer_handle;
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static int nfs_msg __P((struct proc *,char *,char *));
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static int nfs_rcvlock __P((struct nfsreq *));
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static void nfs_rcvunlock __P((int *flagp, int *statep));
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static void nfs_rcvunlock __P((struct nfsreq *));
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static void nfs_realign __P((struct mbuf *m, int hsiz));
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static int nfs_receive __P((struct nfsreq *rep, struct sockaddr **aname,
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struct mbuf **mp));
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@ -233,7 +233,6 @@ nfs_connect(nmp, rep)
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goto bad;
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}
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} else {
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/* XXX should not use mbuf */
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error = soconnect(so, nmp->nm_nam, p);
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if (error)
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goto bad;
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@ -393,7 +392,7 @@ nfs_safedisconnect(nmp)
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dummyreq.r_nmp = nmp;
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nfs_rcvlock(&dummyreq);
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nfs_disconnect(nmp);
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nfs_rcvunlock(&nmp->nm_flag, &nmp->nm_state);
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nfs_rcvunlock(&dummyreq);
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}
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/*
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@ -519,8 +518,7 @@ nfs_receive(rep, aname, mp)
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* until we have an entire rpc request/reply.
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*/
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if (sotype != SOCK_DGRAM) {
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error = nfs_sndlock(&rep->r_nmp->nm_flag, &rep->r_nmp->nm_state,
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rep);
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error = nfs_sndlock(rep);
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if (error)
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return (error);
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tryagain:
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@ -534,16 +532,14 @@ nfs_receive(rep, aname, mp)
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* mount point.
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*/
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if (rep->r_mrep || (rep->r_flags & R_SOFTTERM)) {
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nfs_sndunlock(&rep->r_nmp->nm_flag,
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&rep->r_nmp->nm_state);
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nfs_sndunlock(rep);
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return (EINTR);
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}
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so = rep->r_nmp->nm_so;
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if (!so) {
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error = nfs_reconnect(rep);
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if (error) {
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nfs_sndunlock(&rep->r_nmp->nm_flag,
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&rep->r_nmp->nm_state);
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nfs_sndunlock(rep);
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return (error);
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}
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goto tryagain;
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@ -555,14 +551,13 @@ nfs_receive(rep, aname, mp)
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if (error) {
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if (error == EINTR || error == ERESTART ||
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(error = nfs_reconnect(rep)) != 0) {
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nfs_sndunlock(&rep->r_nmp->nm_flag,
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&rep->r_nmp->nm_state);
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nfs_sndunlock(rep);
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return (error);
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}
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goto tryagain;
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}
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}
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nfs_sndunlock(&rep->r_nmp->nm_flag, &rep->r_nmp->nm_state);
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nfs_sndunlock(rep);
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if (sotype == SOCK_STREAM) {
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aio.iov_base = (caddr_t) &len;
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aio.iov_len = sizeof(u_int32_t);
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@ -669,15 +664,13 @@ nfs_receive(rep, aname, mp)
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"receive error %d from nfs server %s\n",
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error,
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rep->r_nmp->nm_mountp->mnt_stat.f_mntfromname);
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error = nfs_sndlock(&rep->r_nmp->nm_flag,
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&rep->r_nmp->nm_state, rep);
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error = nfs_sndlock(rep);
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if (!error)
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error = nfs_reconnect(rep);
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if (!error)
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goto tryagain;
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else
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nfs_sndunlock(&rep->r_nmp->nm_flag,
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&rep->r_nmp->nm_state);
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nfs_sndunlock(rep);
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}
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} else {
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if ((so = rep->r_nmp->nm_so) == NULL)
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@ -756,7 +749,7 @@ nfs_reply(myrep)
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* Get the next Rpc reply off the socket
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*/
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error = nfs_receive(myrep, &nam, &mrep);
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nfs_rcvunlock(&nmp->nm_flag, &nmp->nm_state);
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nfs_rcvunlock(myrep);
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if (error) {
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/*
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@ -1016,12 +1009,12 @@ nfs_request(vp, mrest, procnum, procp, cred, mrp, mdp, dposp)
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nmp->nm_sent < nmp->nm_cwnd)) {
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splx(s);
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if (nmp->nm_soflags & PR_CONNREQUIRED)
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error = nfs_sndlock(&nmp->nm_flag, &nmp->nm_state, rep);
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error = nfs_sndlock(rep);
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if (!error) {
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m = m_copym(m, 0, M_COPYALL, M_WAIT);
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error = nfs_send(nmp->nm_so, nmp->nm_nam, m, rep);
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if (nmp->nm_soflags & PR_CONNREQUIRED)
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nfs_sndunlock(&nmp->nm_flag, &nmp->nm_state);
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nfs_sndunlock(rep);
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}
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if (!error && (rep->r_flags & R_MUSTRESEND) == 0) {
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nmp->nm_sent += NFS_CWNDSCALE;
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@ -1497,11 +1490,10 @@ nfs_sigintr(nmp, rep, p)
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* in progress when a reconnect is necessary.
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*/
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int
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nfs_sndlock(flagp, statep, rep)
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register int *flagp;
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register int *statep;
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nfs_sndlock(rep)
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struct nfsreq *rep;
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{
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register int *statep = &rep->r_nmp->nm_state;
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struct proc *p;
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int slpflag = 0, slptimeo = 0;
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@ -1515,7 +1507,7 @@ nfs_sndlock(flagp, statep, rep)
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if (nfs_sigintr(rep->r_nmp, rep, p))
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return (EINTR);
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*statep |= NFSSTA_WANTSND;
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(void) tsleep((caddr_t)flagp, slpflag | (PZERO - 1),
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(void) tsleep((caddr_t)statep, slpflag | (PZERO - 1),
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"nfsndlck", slptimeo);
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if (slpflag == PCATCH) {
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slpflag = 0;
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@ -1530,17 +1522,17 @@ nfs_sndlock(flagp, statep, rep)
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* Unlock the stream socket for others.
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*/
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void
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nfs_sndunlock(flagp, statep)
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register int *flagp;
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register int *statep;
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nfs_sndunlock(rep)
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struct nfsreq *rep;
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{
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register int *statep = &rep->r_nmp->nm_state;
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if ((*statep & NFSSTA_SNDLOCK) == 0)
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panic("nfs sndunlock");
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*statep &= ~NFSSTA_SNDLOCK;
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if (*statep & NFSSTA_WANTSND) {
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*statep &= ~NFSSTA_WANTSND;
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wakeup((caddr_t)flagp);
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wakeup((caddr_t)statep);
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}
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}
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@ -1548,11 +1540,10 @@ static int
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nfs_rcvlock(rep)
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register struct nfsreq *rep;
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{
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register int *flagp = &rep->r_nmp->nm_flag;
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register int *statep = &rep->r_nmp->nm_state;
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int slpflag, slptimeo = 0;
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if (*flagp & NFSMNT_INT)
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if (rep->r_nmp->nm_flag & NFSMNT_INT)
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slpflag = PCATCH;
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else
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slpflag = 0;
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@ -1560,7 +1551,7 @@ nfs_rcvlock(rep)
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if (nfs_sigintr(rep->r_nmp, rep, rep->r_procp))
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return (EINTR);
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*statep |= NFSSTA_WANTRCV;
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(void) tsleep((caddr_t)flagp, slpflag | (PZERO - 1), "nfsrcvlk",
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(void) tsleep((caddr_t)statep, slpflag | (PZERO - 1), "nfsrcvlk",
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slptimeo);
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/*
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* If our reply was recieved while we were sleeping,
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@ -1583,17 +1574,17 @@ nfs_rcvlock(rep)
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* Unlock the stream socket for others.
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*/
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static void
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nfs_rcvunlock(flagp, statep)
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register int *flagp;
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register int *statep;
|
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nfs_rcvunlock(rep)
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register struct nfsreq *rep;
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{
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register int *statep = &rep->r_nmp->nm_state;
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|
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if ((*statep & NFSSTA_RCVLOCK) == 0)
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panic("nfs rcvunlock");
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*statep &= ~NFSSTA_RCVLOCK;
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if (*statep & NFSSTA_WANTRCV) {
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*statep &= ~NFSSTA_WANTRCV;
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wakeup((caddr_t)flagp);
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wakeup((caddr_t)statep);
|
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}
|
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}
|
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|
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|
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@ -34,7 +34,7 @@
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* SUCH DAMAGE.
|
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*
|
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* @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
|
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* $Id: nfs_syscalls.c,v 1.46 1999/02/16 10:49:53 dfr Exp $
|
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* $Id: nfs_syscalls.c,v 1.47 1999/02/18 09:19:41 dfr Exp $
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*/
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#include <sys/param.h>
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@ -89,7 +89,9 @@ extern int nfsrvw_procrastinate_v3;
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struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
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static int nuidhash_max = NFS_MAXUIDHASH;
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|
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#ifndef NFS_NOSERVER
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static void nfsrv_zapsock __P((struct nfssvc_sock *slp));
|
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#endif
|
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static int nfssvc_iod __P((struct proc *));
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|
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#define TRUE 1
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@ -466,8 +468,6 @@ nfssvc_nfsd(nsd, argp, p)
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register struct mbuf *m;
|
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register int siz;
|
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register struct nfssvc_sock *slp;
|
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register struct socket *so;
|
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register int *solockp;
|
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struct nfsd *nfsd = nsd->nsd_nfsd;
|
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struct nfsrv_descript *nd = NULL;
|
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struct mbuf *mreq;
|
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@ -527,13 +527,10 @@ nfssvc_nfsd(nsd, argp, p)
|
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nfsrv_zapsock(slp);
|
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else if (slp->ns_flag & SLP_NEEDQ) {
|
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slp->ns_flag &= ~SLP_NEEDQ;
|
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(void) nfs_sndlock(&slp->ns_solock,
|
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&slp->ns_solock,
|
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(struct nfsreq *)0);
|
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(void) nfs_slplock(slp, 1);
|
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nfsrv_rcv(slp->ns_so, (caddr_t)slp,
|
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M_WAIT);
|
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nfs_sndunlock(&slp->ns_solock,
|
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&slp->ns_solock);
|
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nfs_slpunlock(slp);
|
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}
|
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error = nfsrv_dorec(slp, nfsd, &nd);
|
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cur_usec = nfs_curusec();
|
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@ -561,12 +558,7 @@ nfssvc_nfsd(nsd, argp, p)
|
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continue;
|
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}
|
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splx(s);
|
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so = slp->ns_so;
|
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sotype = so->so_type;
|
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if (so->so_proto->pr_flags & PR_CONNREQUIRED)
|
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solockp = &slp->ns_solock;
|
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else
|
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solockp = (int *)0;
|
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sotype = slp->ns_so->so_type;
|
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if (nd) {
|
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getmicrotime(&nd->nd_starttime);
|
||||
if (nd->nd_nam2)
|
||||
@ -692,11 +684,10 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
|
||||
*mtod(m, u_int32_t *) = htonl(0x80000000 | siz);
|
||||
}
|
||||
if (solockp)
|
||||
(void) nfs_sndlock(solockp, solockp,
|
||||
(struct nfsreq *)0);
|
||||
if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
(void) nfs_slplock(slp, 1);
|
||||
if (slp->ns_flag & SLP_VALID)
|
||||
error = nfs_send(so, nd->nd_nam2, m, NULL);
|
||||
error = nfs_send(slp->ns_so, nd->nd_nam2, m, NULL);
|
||||
else {
|
||||
error = EPIPE;
|
||||
m_freem(m);
|
||||
@ -709,8 +700,8 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
m_freem(nd->nd_mrep);
|
||||
if (error == EPIPE)
|
||||
nfsrv_zapsock(slp);
|
||||
if (solockp)
|
||||
nfs_sndunlock(solockp, solockp);
|
||||
if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
nfs_slpunlock(slp);
|
||||
if (error == EINTR || error == ERESTART) {
|
||||
free((caddr_t)nd, M_NFSRVDESC);
|
||||
nfsrv_slpderef(slp);
|
||||
@ -834,6 +825,44 @@ nfsrv_slpderef(slp)
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Lock a socket against others.
|
||||
*/
|
||||
int
|
||||
nfs_slplock(slp, wait)
|
||||
register struct nfssvc_sock *slp;
|
||||
int wait;
|
||||
{
|
||||
int *statep = &slp->ns_solock;
|
||||
|
||||
if (!wait && (*statep & NFSSTA_SNDLOCK))
|
||||
return(0); /* already locked, fail */
|
||||
while (*statep & NFSSTA_SNDLOCK) {
|
||||
*statep |= NFSSTA_WANTSND;
|
||||
(void) tsleep((caddr_t)statep, PZERO - 1, "nfsslplck", 0);
|
||||
}
|
||||
*statep |= NFSSTA_SNDLOCK;
|
||||
return (1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Unlock the stream socket for others.
|
||||
*/
|
||||
void
|
||||
nfs_slpunlock(slp)
|
||||
register struct nfssvc_sock *slp;
|
||||
{
|
||||
int *statep = &slp->ns_solock;
|
||||
|
||||
if ((*statep & NFSSTA_SNDLOCK) == 0)
|
||||
panic("nfs slpunlock");
|
||||
*statep &= ~NFSSTA_SNDLOCK;
|
||||
if (*statep & NFSSTA_WANTSND) {
|
||||
*statep &= ~NFSSTA_WANTSND;
|
||||
wakeup((caddr_t)statep);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the data structures for the server.
|
||||
* Handshake with any new nfsds starting up to avoid any chance of
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs.h 8.4 (Berkeley) 5/1/95
|
||||
* $Id: nfs.h,v 1.43 1998/08/23 03:07:16 wollman Exp $
|
||||
* $Id: nfs.h,v 1.44 1998/09/07 05:42:15 bde Exp $
|
||||
*/
|
||||
|
||||
#ifndef _NFS_NFS_H_
|
||||
@ -594,8 +594,10 @@ int nfs_send __P((struct socket *, struct sockaddr *, struct mbuf *,
|
||||
int nfs_rephead __P((int, struct nfsrv_descript *, struct nfssvc_sock *,
|
||||
int, int, u_quad_t *, struct mbuf **, struct mbuf **,
|
||||
caddr_t *));
|
||||
int nfs_sndlock __P((int *, int *, struct nfsreq *));
|
||||
void nfs_sndunlock __P((int *, int *));
|
||||
int nfs_sndlock __P((struct nfsreq *));
|
||||
void nfs_sndunlock __P((struct nfsreq *));
|
||||
int nfs_slplock __P((struct nfssvc_sock *, int));
|
||||
void nfs_slpunlock __P((struct nfssvc_sock *));
|
||||
int nfs_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
|
||||
int nfs_vinvalbuf __P((struct vnode *, int, struct ucred *, struct proc *,
|
||||
int));
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
|
||||
* $Id: nfs_syscalls.c,v 1.46 1999/02/16 10:49:53 dfr Exp $
|
||||
* $Id: nfs_syscalls.c,v 1.47 1999/02/18 09:19:41 dfr Exp $
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
@ -89,7 +89,9 @@ extern int nfsrvw_procrastinate_v3;
|
||||
struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
|
||||
static int nuidhash_max = NFS_MAXUIDHASH;
|
||||
|
||||
#ifndef NFS_NOSERVER
|
||||
static void nfsrv_zapsock __P((struct nfssvc_sock *slp));
|
||||
#endif
|
||||
static int nfssvc_iod __P((struct proc *));
|
||||
|
||||
#define TRUE 1
|
||||
@ -466,8 +468,6 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
register struct mbuf *m;
|
||||
register int siz;
|
||||
register struct nfssvc_sock *slp;
|
||||
register struct socket *so;
|
||||
register int *solockp;
|
||||
struct nfsd *nfsd = nsd->nsd_nfsd;
|
||||
struct nfsrv_descript *nd = NULL;
|
||||
struct mbuf *mreq;
|
||||
@ -527,13 +527,10 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
nfsrv_zapsock(slp);
|
||||
else if (slp->ns_flag & SLP_NEEDQ) {
|
||||
slp->ns_flag &= ~SLP_NEEDQ;
|
||||
(void) nfs_sndlock(&slp->ns_solock,
|
||||
&slp->ns_solock,
|
||||
(struct nfsreq *)0);
|
||||
(void) nfs_slplock(slp, 1);
|
||||
nfsrv_rcv(slp->ns_so, (caddr_t)slp,
|
||||
M_WAIT);
|
||||
nfs_sndunlock(&slp->ns_solock,
|
||||
&slp->ns_solock);
|
||||
nfs_slpunlock(slp);
|
||||
}
|
||||
error = nfsrv_dorec(slp, nfsd, &nd);
|
||||
cur_usec = nfs_curusec();
|
||||
@ -561,12 +558,7 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
continue;
|
||||
}
|
||||
splx(s);
|
||||
so = slp->ns_so;
|
||||
sotype = so->so_type;
|
||||
if (so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
solockp = &slp->ns_solock;
|
||||
else
|
||||
solockp = (int *)0;
|
||||
sotype = slp->ns_so->so_type;
|
||||
if (nd) {
|
||||
getmicrotime(&nd->nd_starttime);
|
||||
if (nd->nd_nam2)
|
||||
@ -692,11 +684,10 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
|
||||
*mtod(m, u_int32_t *) = htonl(0x80000000 | siz);
|
||||
}
|
||||
if (solockp)
|
||||
(void) nfs_sndlock(solockp, solockp,
|
||||
(struct nfsreq *)0);
|
||||
if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
(void) nfs_slplock(slp, 1);
|
||||
if (slp->ns_flag & SLP_VALID)
|
||||
error = nfs_send(so, nd->nd_nam2, m, NULL);
|
||||
error = nfs_send(slp->ns_so, nd->nd_nam2, m, NULL);
|
||||
else {
|
||||
error = EPIPE;
|
||||
m_freem(m);
|
||||
@ -709,8 +700,8 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
m_freem(nd->nd_mrep);
|
||||
if (error == EPIPE)
|
||||
nfsrv_zapsock(slp);
|
||||
if (solockp)
|
||||
nfs_sndunlock(solockp, solockp);
|
||||
if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
nfs_slpunlock(slp);
|
||||
if (error == EINTR || error == ERESTART) {
|
||||
free((caddr_t)nd, M_NFSRVDESC);
|
||||
nfsrv_slpderef(slp);
|
||||
@ -834,6 +825,44 @@ nfsrv_slpderef(slp)
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Lock a socket against others.
|
||||
*/
|
||||
int
|
||||
nfs_slplock(slp, wait)
|
||||
register struct nfssvc_sock *slp;
|
||||
int wait;
|
||||
{
|
||||
int *statep = &slp->ns_solock;
|
||||
|
||||
if (!wait && (*statep & NFSSTA_SNDLOCK))
|
||||
return(0); /* already locked, fail */
|
||||
while (*statep & NFSSTA_SNDLOCK) {
|
||||
*statep |= NFSSTA_WANTSND;
|
||||
(void) tsleep((caddr_t)statep, PZERO - 1, "nfsslplck", 0);
|
||||
}
|
||||
*statep |= NFSSTA_SNDLOCK;
|
||||
return (1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Unlock the stream socket for others.
|
||||
*/
|
||||
void
|
||||
nfs_slpunlock(slp)
|
||||
register struct nfssvc_sock *slp;
|
||||
{
|
||||
int *statep = &slp->ns_solock;
|
||||
|
||||
if ((*statep & NFSSTA_SNDLOCK) == 0)
|
||||
panic("nfs slpunlock");
|
||||
*statep &= ~NFSSTA_SNDLOCK;
|
||||
if (*statep & NFSSTA_WANTSND) {
|
||||
*statep &= ~NFSSTA_WANTSND;
|
||||
wakeup((caddr_t)statep);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the data structures for the server.
|
||||
* Handshake with any new nfsds starting up to avoid any chance of
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs_socket.c 8.5 (Berkeley) 3/30/95
|
||||
* $Id: nfs_socket.c,v 1.48 1998/12/07 21:58:44 archie Exp $
|
||||
* $Id: nfs_socket.c,v 1.49 1998/12/30 00:37:43 hoek Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -137,7 +137,7 @@ struct callout_handle nfs_timer_handle;
|
||||
|
||||
static int nfs_msg __P((struct proc *,char *,char *));
|
||||
static int nfs_rcvlock __P((struct nfsreq *));
|
||||
static void nfs_rcvunlock __P((int *flagp, int *statep));
|
||||
static void nfs_rcvunlock __P((struct nfsreq *));
|
||||
static void nfs_realign __P((struct mbuf *m, int hsiz));
|
||||
static int nfs_receive __P((struct nfsreq *rep, struct sockaddr **aname,
|
||||
struct mbuf **mp));
|
||||
@ -233,7 +233,6 @@ nfs_connect(nmp, rep)
|
||||
goto bad;
|
||||
}
|
||||
} else {
|
||||
/* XXX should not use mbuf */
|
||||
error = soconnect(so, nmp->nm_nam, p);
|
||||
if (error)
|
||||
goto bad;
|
||||
@ -393,7 +392,7 @@ nfs_safedisconnect(nmp)
|
||||
dummyreq.r_nmp = nmp;
|
||||
nfs_rcvlock(&dummyreq);
|
||||
nfs_disconnect(nmp);
|
||||
nfs_rcvunlock(&nmp->nm_flag, &nmp->nm_state);
|
||||
nfs_rcvunlock(&dummyreq);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -519,8 +518,7 @@ nfs_receive(rep, aname, mp)
|
||||
* until we have an entire rpc request/reply.
|
||||
*/
|
||||
if (sotype != SOCK_DGRAM) {
|
||||
error = nfs_sndlock(&rep->r_nmp->nm_flag, &rep->r_nmp->nm_state,
|
||||
rep);
|
||||
error = nfs_sndlock(rep);
|
||||
if (error)
|
||||
return (error);
|
||||
tryagain:
|
||||
@ -534,16 +532,14 @@ nfs_receive(rep, aname, mp)
|
||||
* mount point.
|
||||
*/
|
||||
if (rep->r_mrep || (rep->r_flags & R_SOFTTERM)) {
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
return (EINTR);
|
||||
}
|
||||
so = rep->r_nmp->nm_so;
|
||||
if (!so) {
|
||||
error = nfs_reconnect(rep);
|
||||
if (error) {
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
return (error);
|
||||
}
|
||||
goto tryagain;
|
||||
@ -555,14 +551,13 @@ nfs_receive(rep, aname, mp)
|
||||
if (error) {
|
||||
if (error == EINTR || error == ERESTART ||
|
||||
(error = nfs_reconnect(rep)) != 0) {
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
return (error);
|
||||
}
|
||||
goto tryagain;
|
||||
}
|
||||
}
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag, &rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
if (sotype == SOCK_STREAM) {
|
||||
aio.iov_base = (caddr_t) &len;
|
||||
aio.iov_len = sizeof(u_int32_t);
|
||||
@ -669,15 +664,13 @@ nfs_receive(rep, aname, mp)
|
||||
"receive error %d from nfs server %s\n",
|
||||
error,
|
||||
rep->r_nmp->nm_mountp->mnt_stat.f_mntfromname);
|
||||
error = nfs_sndlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state, rep);
|
||||
error = nfs_sndlock(rep);
|
||||
if (!error)
|
||||
error = nfs_reconnect(rep);
|
||||
if (!error)
|
||||
goto tryagain;
|
||||
else
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
}
|
||||
} else {
|
||||
if ((so = rep->r_nmp->nm_so) == NULL)
|
||||
@ -756,7 +749,7 @@ nfs_reply(myrep)
|
||||
* Get the next Rpc reply off the socket
|
||||
*/
|
||||
error = nfs_receive(myrep, &nam, &mrep);
|
||||
nfs_rcvunlock(&nmp->nm_flag, &nmp->nm_state);
|
||||
nfs_rcvunlock(myrep);
|
||||
if (error) {
|
||||
|
||||
/*
|
||||
@ -1016,12 +1009,12 @@ nfs_request(vp, mrest, procnum, procp, cred, mrp, mdp, dposp)
|
||||
nmp->nm_sent < nmp->nm_cwnd)) {
|
||||
splx(s);
|
||||
if (nmp->nm_soflags & PR_CONNREQUIRED)
|
||||
error = nfs_sndlock(&nmp->nm_flag, &nmp->nm_state, rep);
|
||||
error = nfs_sndlock(rep);
|
||||
if (!error) {
|
||||
m = m_copym(m, 0, M_COPYALL, M_WAIT);
|
||||
error = nfs_send(nmp->nm_so, nmp->nm_nam, m, rep);
|
||||
if (nmp->nm_soflags & PR_CONNREQUIRED)
|
||||
nfs_sndunlock(&nmp->nm_flag, &nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
}
|
||||
if (!error && (rep->r_flags & R_MUSTRESEND) == 0) {
|
||||
nmp->nm_sent += NFS_CWNDSCALE;
|
||||
@ -1497,11 +1490,10 @@ nfs_sigintr(nmp, rep, p)
|
||||
* in progress when a reconnect is necessary.
|
||||
*/
|
||||
int
|
||||
nfs_sndlock(flagp, statep, rep)
|
||||
register int *flagp;
|
||||
register int *statep;
|
||||
nfs_sndlock(rep)
|
||||
struct nfsreq *rep;
|
||||
{
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
struct proc *p;
|
||||
int slpflag = 0, slptimeo = 0;
|
||||
|
||||
@ -1515,7 +1507,7 @@ nfs_sndlock(flagp, statep, rep)
|
||||
if (nfs_sigintr(rep->r_nmp, rep, p))
|
||||
return (EINTR);
|
||||
*statep |= NFSSTA_WANTSND;
|
||||
(void) tsleep((caddr_t)flagp, slpflag | (PZERO - 1),
|
||||
(void) tsleep((caddr_t)statep, slpflag | (PZERO - 1),
|
||||
"nfsndlck", slptimeo);
|
||||
if (slpflag == PCATCH) {
|
||||
slpflag = 0;
|
||||
@ -1530,17 +1522,17 @@ nfs_sndlock(flagp, statep, rep)
|
||||
* Unlock the stream socket for others.
|
||||
*/
|
||||
void
|
||||
nfs_sndunlock(flagp, statep)
|
||||
register int *flagp;
|
||||
register int *statep;
|
||||
nfs_sndunlock(rep)
|
||||
struct nfsreq *rep;
|
||||
{
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
|
||||
if ((*statep & NFSSTA_SNDLOCK) == 0)
|
||||
panic("nfs sndunlock");
|
||||
*statep &= ~NFSSTA_SNDLOCK;
|
||||
if (*statep & NFSSTA_WANTSND) {
|
||||
*statep &= ~NFSSTA_WANTSND;
|
||||
wakeup((caddr_t)flagp);
|
||||
wakeup((caddr_t)statep);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1548,11 +1540,10 @@ static int
|
||||
nfs_rcvlock(rep)
|
||||
register struct nfsreq *rep;
|
||||
{
|
||||
register int *flagp = &rep->r_nmp->nm_flag;
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
int slpflag, slptimeo = 0;
|
||||
|
||||
if (*flagp & NFSMNT_INT)
|
||||
if (rep->r_nmp->nm_flag & NFSMNT_INT)
|
||||
slpflag = PCATCH;
|
||||
else
|
||||
slpflag = 0;
|
||||
@ -1560,7 +1551,7 @@ nfs_rcvlock(rep)
|
||||
if (nfs_sigintr(rep->r_nmp, rep, rep->r_procp))
|
||||
return (EINTR);
|
||||
*statep |= NFSSTA_WANTRCV;
|
||||
(void) tsleep((caddr_t)flagp, slpflag | (PZERO - 1), "nfsrcvlk",
|
||||
(void) tsleep((caddr_t)statep, slpflag | (PZERO - 1), "nfsrcvlk",
|
||||
slptimeo);
|
||||
/*
|
||||
* If our reply was recieved while we were sleeping,
|
||||
@ -1583,17 +1574,17 @@ nfs_rcvlock(rep)
|
||||
* Unlock the stream socket for others.
|
||||
*/
|
||||
static void
|
||||
nfs_rcvunlock(flagp, statep)
|
||||
register int *flagp;
|
||||
register int *statep;
|
||||
nfs_rcvunlock(rep)
|
||||
register struct nfsreq *rep;
|
||||
{
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
|
||||
if ((*statep & NFSSTA_RCVLOCK) == 0)
|
||||
panic("nfs rcvunlock");
|
||||
*statep &= ~NFSSTA_RCVLOCK;
|
||||
if (*statep & NFSSTA_WANTRCV) {
|
||||
*statep &= ~NFSSTA_WANTRCV;
|
||||
wakeup((caddr_t)flagp);
|
||||
wakeup((caddr_t)statep);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs.h 8.4 (Berkeley) 5/1/95
|
||||
* $Id: nfs.h,v 1.43 1998/08/23 03:07:16 wollman Exp $
|
||||
* $Id: nfs.h,v 1.44 1998/09/07 05:42:15 bde Exp $
|
||||
*/
|
||||
|
||||
#ifndef _NFS_NFS_H_
|
||||
@ -594,8 +594,10 @@ int nfs_send __P((struct socket *, struct sockaddr *, struct mbuf *,
|
||||
int nfs_rephead __P((int, struct nfsrv_descript *, struct nfssvc_sock *,
|
||||
int, int, u_quad_t *, struct mbuf **, struct mbuf **,
|
||||
caddr_t *));
|
||||
int nfs_sndlock __P((int *, int *, struct nfsreq *));
|
||||
void nfs_sndunlock __P((int *, int *));
|
||||
int nfs_sndlock __P((struct nfsreq *));
|
||||
void nfs_sndunlock __P((struct nfsreq *));
|
||||
int nfs_slplock __P((struct nfssvc_sock *, int));
|
||||
void nfs_slpunlock __P((struct nfssvc_sock *));
|
||||
int nfs_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
|
||||
int nfs_vinvalbuf __P((struct vnode *, int, struct ucred *, struct proc *,
|
||||
int));
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs.h 8.4 (Berkeley) 5/1/95
|
||||
* $Id: nfs.h,v 1.43 1998/08/23 03:07:16 wollman Exp $
|
||||
* $Id: nfs.h,v 1.44 1998/09/07 05:42:15 bde Exp $
|
||||
*/
|
||||
|
||||
#ifndef _NFS_NFS_H_
|
||||
@ -594,8 +594,10 @@ int nfs_send __P((struct socket *, struct sockaddr *, struct mbuf *,
|
||||
int nfs_rephead __P((int, struct nfsrv_descript *, struct nfssvc_sock *,
|
||||
int, int, u_quad_t *, struct mbuf **, struct mbuf **,
|
||||
caddr_t *));
|
||||
int nfs_sndlock __P((int *, int *, struct nfsreq *));
|
||||
void nfs_sndunlock __P((int *, int *));
|
||||
int nfs_sndlock __P((struct nfsreq *));
|
||||
void nfs_sndunlock __P((struct nfsreq *));
|
||||
int nfs_slplock __P((struct nfssvc_sock *, int));
|
||||
void nfs_slpunlock __P((struct nfssvc_sock *));
|
||||
int nfs_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
|
||||
int nfs_vinvalbuf __P((struct vnode *, int, struct ucred *, struct proc *,
|
||||
int));
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs.h 8.4 (Berkeley) 5/1/95
|
||||
* $Id: nfs.h,v 1.43 1998/08/23 03:07:16 wollman Exp $
|
||||
* $Id: nfs.h,v 1.44 1998/09/07 05:42:15 bde Exp $
|
||||
*/
|
||||
|
||||
#ifndef _NFS_NFS_H_
|
||||
@ -594,8 +594,10 @@ int nfs_send __P((struct socket *, struct sockaddr *, struct mbuf *,
|
||||
int nfs_rephead __P((int, struct nfsrv_descript *, struct nfssvc_sock *,
|
||||
int, int, u_quad_t *, struct mbuf **, struct mbuf **,
|
||||
caddr_t *));
|
||||
int nfs_sndlock __P((int *, int *, struct nfsreq *));
|
||||
void nfs_sndunlock __P((int *, int *));
|
||||
int nfs_sndlock __P((struct nfsreq *));
|
||||
void nfs_sndunlock __P((struct nfsreq *));
|
||||
int nfs_slplock __P((struct nfssvc_sock *, int));
|
||||
void nfs_slpunlock __P((struct nfssvc_sock *));
|
||||
int nfs_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
|
||||
int nfs_vinvalbuf __P((struct vnode *, int, struct ucred *, struct proc *,
|
||||
int));
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs_socket.c 8.5 (Berkeley) 3/30/95
|
||||
* $Id: nfs_socket.c,v 1.48 1998/12/07 21:58:44 archie Exp $
|
||||
* $Id: nfs_socket.c,v 1.49 1998/12/30 00:37:43 hoek Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -137,7 +137,7 @@ struct callout_handle nfs_timer_handle;
|
||||
|
||||
static int nfs_msg __P((struct proc *,char *,char *));
|
||||
static int nfs_rcvlock __P((struct nfsreq *));
|
||||
static void nfs_rcvunlock __P((int *flagp, int *statep));
|
||||
static void nfs_rcvunlock __P((struct nfsreq *));
|
||||
static void nfs_realign __P((struct mbuf *m, int hsiz));
|
||||
static int nfs_receive __P((struct nfsreq *rep, struct sockaddr **aname,
|
||||
struct mbuf **mp));
|
||||
@ -233,7 +233,6 @@ nfs_connect(nmp, rep)
|
||||
goto bad;
|
||||
}
|
||||
} else {
|
||||
/* XXX should not use mbuf */
|
||||
error = soconnect(so, nmp->nm_nam, p);
|
||||
if (error)
|
||||
goto bad;
|
||||
@ -393,7 +392,7 @@ nfs_safedisconnect(nmp)
|
||||
dummyreq.r_nmp = nmp;
|
||||
nfs_rcvlock(&dummyreq);
|
||||
nfs_disconnect(nmp);
|
||||
nfs_rcvunlock(&nmp->nm_flag, &nmp->nm_state);
|
||||
nfs_rcvunlock(&dummyreq);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -519,8 +518,7 @@ nfs_receive(rep, aname, mp)
|
||||
* until we have an entire rpc request/reply.
|
||||
*/
|
||||
if (sotype != SOCK_DGRAM) {
|
||||
error = nfs_sndlock(&rep->r_nmp->nm_flag, &rep->r_nmp->nm_state,
|
||||
rep);
|
||||
error = nfs_sndlock(rep);
|
||||
if (error)
|
||||
return (error);
|
||||
tryagain:
|
||||
@ -534,16 +532,14 @@ nfs_receive(rep, aname, mp)
|
||||
* mount point.
|
||||
*/
|
||||
if (rep->r_mrep || (rep->r_flags & R_SOFTTERM)) {
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
return (EINTR);
|
||||
}
|
||||
so = rep->r_nmp->nm_so;
|
||||
if (!so) {
|
||||
error = nfs_reconnect(rep);
|
||||
if (error) {
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
return (error);
|
||||
}
|
||||
goto tryagain;
|
||||
@ -555,14 +551,13 @@ nfs_receive(rep, aname, mp)
|
||||
if (error) {
|
||||
if (error == EINTR || error == ERESTART ||
|
||||
(error = nfs_reconnect(rep)) != 0) {
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
return (error);
|
||||
}
|
||||
goto tryagain;
|
||||
}
|
||||
}
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag, &rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
if (sotype == SOCK_STREAM) {
|
||||
aio.iov_base = (caddr_t) &len;
|
||||
aio.iov_len = sizeof(u_int32_t);
|
||||
@ -669,15 +664,13 @@ nfs_receive(rep, aname, mp)
|
||||
"receive error %d from nfs server %s\n",
|
||||
error,
|
||||
rep->r_nmp->nm_mountp->mnt_stat.f_mntfromname);
|
||||
error = nfs_sndlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state, rep);
|
||||
error = nfs_sndlock(rep);
|
||||
if (!error)
|
||||
error = nfs_reconnect(rep);
|
||||
if (!error)
|
||||
goto tryagain;
|
||||
else
|
||||
nfs_sndunlock(&rep->r_nmp->nm_flag,
|
||||
&rep->r_nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
}
|
||||
} else {
|
||||
if ((so = rep->r_nmp->nm_so) == NULL)
|
||||
@ -756,7 +749,7 @@ nfs_reply(myrep)
|
||||
* Get the next Rpc reply off the socket
|
||||
*/
|
||||
error = nfs_receive(myrep, &nam, &mrep);
|
||||
nfs_rcvunlock(&nmp->nm_flag, &nmp->nm_state);
|
||||
nfs_rcvunlock(myrep);
|
||||
if (error) {
|
||||
|
||||
/*
|
||||
@ -1016,12 +1009,12 @@ nfs_request(vp, mrest, procnum, procp, cred, mrp, mdp, dposp)
|
||||
nmp->nm_sent < nmp->nm_cwnd)) {
|
||||
splx(s);
|
||||
if (nmp->nm_soflags & PR_CONNREQUIRED)
|
||||
error = nfs_sndlock(&nmp->nm_flag, &nmp->nm_state, rep);
|
||||
error = nfs_sndlock(rep);
|
||||
if (!error) {
|
||||
m = m_copym(m, 0, M_COPYALL, M_WAIT);
|
||||
error = nfs_send(nmp->nm_so, nmp->nm_nam, m, rep);
|
||||
if (nmp->nm_soflags & PR_CONNREQUIRED)
|
||||
nfs_sndunlock(&nmp->nm_flag, &nmp->nm_state);
|
||||
nfs_sndunlock(rep);
|
||||
}
|
||||
if (!error && (rep->r_flags & R_MUSTRESEND) == 0) {
|
||||
nmp->nm_sent += NFS_CWNDSCALE;
|
||||
@ -1497,11 +1490,10 @@ nfs_sigintr(nmp, rep, p)
|
||||
* in progress when a reconnect is necessary.
|
||||
*/
|
||||
int
|
||||
nfs_sndlock(flagp, statep, rep)
|
||||
register int *flagp;
|
||||
register int *statep;
|
||||
nfs_sndlock(rep)
|
||||
struct nfsreq *rep;
|
||||
{
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
struct proc *p;
|
||||
int slpflag = 0, slptimeo = 0;
|
||||
|
||||
@ -1515,7 +1507,7 @@ nfs_sndlock(flagp, statep, rep)
|
||||
if (nfs_sigintr(rep->r_nmp, rep, p))
|
||||
return (EINTR);
|
||||
*statep |= NFSSTA_WANTSND;
|
||||
(void) tsleep((caddr_t)flagp, slpflag | (PZERO - 1),
|
||||
(void) tsleep((caddr_t)statep, slpflag | (PZERO - 1),
|
||||
"nfsndlck", slptimeo);
|
||||
if (slpflag == PCATCH) {
|
||||
slpflag = 0;
|
||||
@ -1530,17 +1522,17 @@ nfs_sndlock(flagp, statep, rep)
|
||||
* Unlock the stream socket for others.
|
||||
*/
|
||||
void
|
||||
nfs_sndunlock(flagp, statep)
|
||||
register int *flagp;
|
||||
register int *statep;
|
||||
nfs_sndunlock(rep)
|
||||
struct nfsreq *rep;
|
||||
{
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
|
||||
if ((*statep & NFSSTA_SNDLOCK) == 0)
|
||||
panic("nfs sndunlock");
|
||||
*statep &= ~NFSSTA_SNDLOCK;
|
||||
if (*statep & NFSSTA_WANTSND) {
|
||||
*statep &= ~NFSSTA_WANTSND;
|
||||
wakeup((caddr_t)flagp);
|
||||
wakeup((caddr_t)statep);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1548,11 +1540,10 @@ static int
|
||||
nfs_rcvlock(rep)
|
||||
register struct nfsreq *rep;
|
||||
{
|
||||
register int *flagp = &rep->r_nmp->nm_flag;
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
int slpflag, slptimeo = 0;
|
||||
|
||||
if (*flagp & NFSMNT_INT)
|
||||
if (rep->r_nmp->nm_flag & NFSMNT_INT)
|
||||
slpflag = PCATCH;
|
||||
else
|
||||
slpflag = 0;
|
||||
@ -1560,7 +1551,7 @@ nfs_rcvlock(rep)
|
||||
if (nfs_sigintr(rep->r_nmp, rep, rep->r_procp))
|
||||
return (EINTR);
|
||||
*statep |= NFSSTA_WANTRCV;
|
||||
(void) tsleep((caddr_t)flagp, slpflag | (PZERO - 1), "nfsrcvlk",
|
||||
(void) tsleep((caddr_t)statep, slpflag | (PZERO - 1), "nfsrcvlk",
|
||||
slptimeo);
|
||||
/*
|
||||
* If our reply was recieved while we were sleeping,
|
||||
@ -1583,17 +1574,17 @@ nfs_rcvlock(rep)
|
||||
* Unlock the stream socket for others.
|
||||
*/
|
||||
static void
|
||||
nfs_rcvunlock(flagp, statep)
|
||||
register int *flagp;
|
||||
register int *statep;
|
||||
nfs_rcvunlock(rep)
|
||||
register struct nfsreq *rep;
|
||||
{
|
||||
register int *statep = &rep->r_nmp->nm_state;
|
||||
|
||||
if ((*statep & NFSSTA_RCVLOCK) == 0)
|
||||
panic("nfs rcvunlock");
|
||||
*statep &= ~NFSSTA_RCVLOCK;
|
||||
if (*statep & NFSSTA_WANTRCV) {
|
||||
*statep &= ~NFSSTA_WANTRCV;
|
||||
wakeup((caddr_t)flagp);
|
||||
wakeup((caddr_t)statep);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
|
||||
* $Id: nfs_syscalls.c,v 1.46 1999/02/16 10:49:53 dfr Exp $
|
||||
* $Id: nfs_syscalls.c,v 1.47 1999/02/18 09:19:41 dfr Exp $
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
@ -89,7 +89,9 @@ extern int nfsrvw_procrastinate_v3;
|
||||
struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
|
||||
static int nuidhash_max = NFS_MAXUIDHASH;
|
||||
|
||||
#ifndef NFS_NOSERVER
|
||||
static void nfsrv_zapsock __P((struct nfssvc_sock *slp));
|
||||
#endif
|
||||
static int nfssvc_iod __P((struct proc *));
|
||||
|
||||
#define TRUE 1
|
||||
@ -466,8 +468,6 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
register struct mbuf *m;
|
||||
register int siz;
|
||||
register struct nfssvc_sock *slp;
|
||||
register struct socket *so;
|
||||
register int *solockp;
|
||||
struct nfsd *nfsd = nsd->nsd_nfsd;
|
||||
struct nfsrv_descript *nd = NULL;
|
||||
struct mbuf *mreq;
|
||||
@ -527,13 +527,10 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
nfsrv_zapsock(slp);
|
||||
else if (slp->ns_flag & SLP_NEEDQ) {
|
||||
slp->ns_flag &= ~SLP_NEEDQ;
|
||||
(void) nfs_sndlock(&slp->ns_solock,
|
||||
&slp->ns_solock,
|
||||
(struct nfsreq *)0);
|
||||
(void) nfs_slplock(slp, 1);
|
||||
nfsrv_rcv(slp->ns_so, (caddr_t)slp,
|
||||
M_WAIT);
|
||||
nfs_sndunlock(&slp->ns_solock,
|
||||
&slp->ns_solock);
|
||||
nfs_slpunlock(slp);
|
||||
}
|
||||
error = nfsrv_dorec(slp, nfsd, &nd);
|
||||
cur_usec = nfs_curusec();
|
||||
@ -561,12 +558,7 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
continue;
|
||||
}
|
||||
splx(s);
|
||||
so = slp->ns_so;
|
||||
sotype = so->so_type;
|
||||
if (so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
solockp = &slp->ns_solock;
|
||||
else
|
||||
solockp = (int *)0;
|
||||
sotype = slp->ns_so->so_type;
|
||||
if (nd) {
|
||||
getmicrotime(&nd->nd_starttime);
|
||||
if (nd->nd_nam2)
|
||||
@ -692,11 +684,10 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
|
||||
*mtod(m, u_int32_t *) = htonl(0x80000000 | siz);
|
||||
}
|
||||
if (solockp)
|
||||
(void) nfs_sndlock(solockp, solockp,
|
||||
(struct nfsreq *)0);
|
||||
if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
(void) nfs_slplock(slp, 1);
|
||||
if (slp->ns_flag & SLP_VALID)
|
||||
error = nfs_send(so, nd->nd_nam2, m, NULL);
|
||||
error = nfs_send(slp->ns_so, nd->nd_nam2, m, NULL);
|
||||
else {
|
||||
error = EPIPE;
|
||||
m_freem(m);
|
||||
@ -709,8 +700,8 @@ nfssvc_nfsd(nsd, argp, p)
|
||||
m_freem(nd->nd_mrep);
|
||||
if (error == EPIPE)
|
||||
nfsrv_zapsock(slp);
|
||||
if (solockp)
|
||||
nfs_sndunlock(solockp, solockp);
|
||||
if (slp->ns_so->so_proto->pr_flags & PR_CONNREQUIRED)
|
||||
nfs_slpunlock(slp);
|
||||
if (error == EINTR || error == ERESTART) {
|
||||
free((caddr_t)nd, M_NFSRVDESC);
|
||||
nfsrv_slpderef(slp);
|
||||
@ -834,6 +825,44 @@ nfsrv_slpderef(slp)
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Lock a socket against others.
|
||||
*/
|
||||
int
|
||||
nfs_slplock(slp, wait)
|
||||
register struct nfssvc_sock *slp;
|
||||
int wait;
|
||||
{
|
||||
int *statep = &slp->ns_solock;
|
||||
|
||||
if (!wait && (*statep & NFSSTA_SNDLOCK))
|
||||
return(0); /* already locked, fail */
|
||||
while (*statep & NFSSTA_SNDLOCK) {
|
||||
*statep |= NFSSTA_WANTSND;
|
||||
(void) tsleep((caddr_t)statep, PZERO - 1, "nfsslplck", 0);
|
||||
}
|
||||
*statep |= NFSSTA_SNDLOCK;
|
||||
return (1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Unlock the stream socket for others.
|
||||
*/
|
||||
void
|
||||
nfs_slpunlock(slp)
|
||||
register struct nfssvc_sock *slp;
|
||||
{
|
||||
int *statep = &slp->ns_solock;
|
||||
|
||||
if ((*statep & NFSSTA_SNDLOCK) == 0)
|
||||
panic("nfs slpunlock");
|
||||
*statep &= ~NFSSTA_SNDLOCK;
|
||||
if (*statep & NFSSTA_WANTSND) {
|
||||
*statep &= ~NFSSTA_WANTSND;
|
||||
wakeup((caddr_t)statep);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the data structures for the server.
|
||||
* Handshake with any new nfsds starting up to avoid any chance of
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* @(#)nfs.h 8.4 (Berkeley) 5/1/95
|
||||
* $Id: nfs.h,v 1.43 1998/08/23 03:07:16 wollman Exp $
|
||||
* $Id: nfs.h,v 1.44 1998/09/07 05:42:15 bde Exp $
|
||||
*/
|
||||
|
||||
#ifndef _NFS_NFS_H_
|
||||
@ -594,8 +594,10 @@ int nfs_send __P((struct socket *, struct sockaddr *, struct mbuf *,
|
||||
int nfs_rephead __P((int, struct nfsrv_descript *, struct nfssvc_sock *,
|
||||
int, int, u_quad_t *, struct mbuf **, struct mbuf **,
|
||||
caddr_t *));
|
||||
int nfs_sndlock __P((int *, int *, struct nfsreq *));
|
||||
void nfs_sndunlock __P((int *, int *));
|
||||
int nfs_sndlock __P((struct nfsreq *));
|
||||
void nfs_sndunlock __P((struct nfsreq *));
|
||||
int nfs_slplock __P((struct nfssvc_sock *, int));
|
||||
void nfs_slpunlock __P((struct nfssvc_sock *));
|
||||
int nfs_disct __P((struct mbuf **, caddr_t *, int, int, caddr_t *));
|
||||
int nfs_vinvalbuf __P((struct vnode *, int, struct ucred *, struct proc *,
|
||||
int));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user