5207 lines
139 KiB
C
5207 lines
139 KiB
C
/*-
|
|
* Copyright (c) 2009 Rick Macklem, University of Guelph
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* These functions implement the client side state handling for NFSv4.
|
|
* NFSv4 state handling:
|
|
* - A lockowner is used to determine lock contention, so it
|
|
* corresponds directly to a Posix pid. (1 to 1 mapping)
|
|
* - The correct granularity of an OpenOwner is not nearly so
|
|
* obvious. An OpenOwner does the following:
|
|
* - provides a serial sequencing of Open/Close/Lock-with-new-lockowner
|
|
* - is used to check for Open/Share contention (not applicable to
|
|
* this client, since all Opens are Deny_None)
|
|
* As such, I considered both extreme.
|
|
* 1 OpenOwner per ClientID - Simple to manage, but fully serializes
|
|
* all Open, Close and Lock (with a new lockowner) Ops.
|
|
* 1 OpenOwner for each Open - This one results in an OpenConfirm for
|
|
* every Open, for most servers.
|
|
* So, I chose to use the same mapping as I did for LockOwnwers.
|
|
* The main concern here is that you can end up with multiple Opens
|
|
* for the same File Handle, but on different OpenOwners (opens
|
|
* inherited from parents, grandparents...) and you do not know
|
|
* which of these the vnodeop close applies to. This is handled by
|
|
* delaying the Close Op(s) until all of the Opens have been closed.
|
|
* (It is not yet obvious if this is the correct granularity.)
|
|
* - How the code handles serialization:
|
|
* - For the ClientId, it uses an exclusive lock while getting its
|
|
* SetClientId and during recovery. Otherwise, it uses a shared
|
|
* lock via a reference count.
|
|
* - For the rest of the data structures, it uses an SMP mutex
|
|
* (once the nfs client is SMP safe) and doesn't sleep while
|
|
* manipulating the linked lists.
|
|
* - The serialization of Open/Close/Lock/LockU falls out in the
|
|
* "wash", since OpenOwners and LockOwners are both mapped from
|
|
* Posix pid. In other words, there is only one Posix pid using
|
|
* any given owner, so that owner is serialized. (If you change
|
|
* the granularity of the OpenOwner, then code must be added to
|
|
* serialize Ops on the OpenOwner.)
|
|
* - When to get rid of OpenOwners and LockOwners.
|
|
* - The function nfscl_cleanup_common() is executed after a process exits.
|
|
* It goes through the client list looking for all Open and Lock Owners.
|
|
* When one is found, it is marked "defunct" or in the case of
|
|
* an OpenOwner without any Opens, freed.
|
|
* The renew thread scans for defunct Owners and gets rid of them,
|
|
* if it can. The LockOwners will also be deleted when the
|
|
* associated Open is closed.
|
|
* - If the LockU or Close Op(s) fail during close in a way
|
|
* that could be recovered upon retry, they are relinked to the
|
|
* ClientId's defunct open list and retried by the renew thread
|
|
* until they succeed or an unmount/recovery occurs.
|
|
* (Since we are done with them, they do not need to be recovered.)
|
|
*/
|
|
|
|
#ifndef APPLEKEXT
|
|
#include <fs/nfs/nfsport.h>
|
|
|
|
/*
|
|
* Global variables
|
|
*/
|
|
extern struct nfsstats newnfsstats;
|
|
extern struct nfsreqhead nfsd_reqq;
|
|
extern u_int32_t newnfs_false, newnfs_true;
|
|
extern int nfscl_debuglevel;
|
|
NFSREQSPINLOCK;
|
|
NFSCLSTATEMUTEX;
|
|
int nfscl_inited = 0;
|
|
struct nfsclhead nfsclhead; /* Head of clientid list */
|
|
int nfscl_deleghighwater = NFSCLDELEGHIGHWATER;
|
|
int nfscl_layouthighwater = NFSCLLAYOUTHIGHWATER;
|
|
#endif /* !APPLEKEXT */
|
|
|
|
static int nfscl_delegcnt = 0;
|
|
static int nfscl_layoutcnt = 0;
|
|
static int nfscl_getopen(struct nfsclownerhead *, u_int8_t *, int, u_int8_t *,
|
|
u_int8_t *, u_int32_t, struct nfscllockowner **, struct nfsclopen **);
|
|
static void nfscl_clrelease(struct nfsclclient *);
|
|
static void nfscl_cleanclient(struct nfsclclient *);
|
|
static void nfscl_expireclient(struct nfsclclient *, struct nfsmount *,
|
|
struct ucred *, NFSPROC_T *);
|
|
static int nfscl_expireopen(struct nfsclclient *, struct nfsclopen *,
|
|
struct nfsmount *, struct ucred *, NFSPROC_T *);
|
|
static void nfscl_recover(struct nfsclclient *, struct ucred *, NFSPROC_T *);
|
|
static void nfscl_insertlock(struct nfscllockowner *, struct nfscllock *,
|
|
struct nfscllock *, int);
|
|
static int nfscl_updatelock(struct nfscllockowner *, struct nfscllock **,
|
|
struct nfscllock **, int);
|
|
static void nfscl_delegreturnall(struct nfsclclient *, NFSPROC_T *);
|
|
static u_int32_t nfscl_nextcbident(void);
|
|
static mount_t nfscl_getmnt(int, uint8_t *, u_int32_t, struct nfsclclient **);
|
|
static struct nfsclclient *nfscl_getclnt(u_int32_t);
|
|
static struct nfsclclient *nfscl_getclntsess(uint8_t *);
|
|
static struct nfscldeleg *nfscl_finddeleg(struct nfsclclient *, u_int8_t *,
|
|
int);
|
|
static void nfscl_retoncloselayout(struct nfsclclient *, uint8_t *, int);
|
|
static void nfscl_reldevinfo_locked(struct nfscldevinfo *);
|
|
static struct nfscllayout *nfscl_findlayout(struct nfsclclient *, u_int8_t *,
|
|
int);
|
|
static struct nfscldevinfo *nfscl_finddevinfo(struct nfsclclient *, uint8_t *);
|
|
static int nfscl_checkconflict(struct nfscllockownerhead *, struct nfscllock *,
|
|
u_int8_t *, struct nfscllock **);
|
|
static void nfscl_freealllocks(struct nfscllockownerhead *, int);
|
|
static int nfscl_localconflict(struct nfsclclient *, u_int8_t *, int,
|
|
struct nfscllock *, u_int8_t *, struct nfscldeleg *, struct nfscllock **);
|
|
static void nfscl_newopen(struct nfsclclient *, struct nfscldeleg *,
|
|
struct nfsclowner **, struct nfsclowner **, struct nfsclopen **,
|
|
struct nfsclopen **, u_int8_t *, u_int8_t *, int, int *);
|
|
static int nfscl_moveopen(vnode_t , struct nfsclclient *,
|
|
struct nfsmount *, struct nfsclopen *, struct nfsclowner *,
|
|
struct nfscldeleg *, struct ucred *, NFSPROC_T *);
|
|
static void nfscl_totalrecall(struct nfsclclient *);
|
|
static int nfscl_relock(vnode_t , struct nfsclclient *, struct nfsmount *,
|
|
struct nfscllockowner *, struct nfscllock *, struct ucred *, NFSPROC_T *);
|
|
static int nfscl_tryopen(struct nfsmount *, vnode_t , u_int8_t *, int,
|
|
u_int8_t *, int, u_int32_t, struct nfsclopen *, u_int8_t *, int,
|
|
struct nfscldeleg **, int, u_int32_t, struct ucred *, NFSPROC_T *);
|
|
static int nfscl_trylock(struct nfsmount *, vnode_t , u_int8_t *,
|
|
int, struct nfscllockowner *, int, int, u_int64_t, u_int64_t, short,
|
|
struct ucred *, NFSPROC_T *);
|
|
static int nfsrpc_reopen(struct nfsmount *, u_int8_t *, int, u_int32_t,
|
|
struct nfsclopen *, struct nfscldeleg **, struct ucred *, NFSPROC_T *);
|
|
static void nfscl_freedeleg(struct nfscldeleghead *, struct nfscldeleg *);
|
|
static int nfscl_errmap(struct nfsrv_descript *);
|
|
static void nfscl_cleanup_common(struct nfsclclient *, u_int8_t *);
|
|
static int nfscl_recalldeleg(struct nfsclclient *, struct nfsmount *,
|
|
struct nfscldeleg *, vnode_t, struct ucred *, NFSPROC_T *, int);
|
|
static void nfscl_freeopenowner(struct nfsclowner *, int);
|
|
static void nfscl_cleandeleg(struct nfscldeleg *);
|
|
static int nfscl_trydelegreturn(struct nfscldeleg *, struct ucred *,
|
|
struct nfsmount *, NFSPROC_T *);
|
|
static void nfscl_emptylockowner(struct nfscllockowner *,
|
|
struct nfscllockownerfhhead *);
|
|
static void nfscl_mergeflayouts(struct nfsclflayouthead *,
|
|
struct nfsclflayouthead *);
|
|
static int nfscl_layoutrecall(int, struct nfscllayout *, uint32_t, uint64_t,
|
|
uint64_t, uint32_t, struct nfsclrecalllayout *);
|
|
static int nfscl_seq(uint32_t, uint32_t);
|
|
static void nfscl_layoutreturn(struct nfsmount *, struct nfscllayout *,
|
|
struct ucred *, NFSPROC_T *);
|
|
static void nfscl_dolayoutcommit(struct nfsmount *, struct nfscllayout *,
|
|
struct ucred *, NFSPROC_T *);
|
|
|
|
static short nfscberr_null[] = {
|
|
0,
|
|
0,
|
|
};
|
|
|
|
static short nfscberr_getattr[] = {
|
|
NFSERR_RESOURCE,
|
|
NFSERR_BADHANDLE,
|
|
NFSERR_BADXDR,
|
|
NFSERR_RESOURCE,
|
|
NFSERR_SERVERFAULT,
|
|
0,
|
|
};
|
|
|
|
static short nfscberr_recall[] = {
|
|
NFSERR_RESOURCE,
|
|
NFSERR_BADHANDLE,
|
|
NFSERR_BADSTATEID,
|
|
NFSERR_BADXDR,
|
|
NFSERR_RESOURCE,
|
|
NFSERR_SERVERFAULT,
|
|
0,
|
|
};
|
|
|
|
static short *nfscl_cberrmap[] = {
|
|
nfscberr_null,
|
|
nfscberr_null,
|
|
nfscberr_null,
|
|
nfscberr_getattr,
|
|
nfscberr_recall
|
|
};
|
|
|
|
#define NETFAMILY(clp) \
|
|
(((clp)->nfsc_flags & NFSCLFLAGS_AFINET6) ? AF_INET6 : AF_INET)
|
|
|
|
/*
|
|
* Called for an open operation.
|
|
* If the nfhp argument is NULL, just get an openowner.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_open(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t amode, int usedeleg,
|
|
struct ucred *cred, NFSPROC_T *p, struct nfsclowner **owpp,
|
|
struct nfsclopen **opp, int *newonep, int *retp, int lockit)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfsclopen *op = NULL, *nop = NULL;
|
|
struct nfscldeleg *dp;
|
|
struct nfsclownerhead *ohp;
|
|
u_int8_t own[NFSV4CL_LOCKNAMELEN];
|
|
int ret;
|
|
|
|
if (newonep != NULL)
|
|
*newonep = 0;
|
|
if (opp != NULL)
|
|
*opp = NULL;
|
|
if (owpp != NULL)
|
|
*owpp = NULL;
|
|
|
|
/*
|
|
* Might need one or both of these, so MALLOC them now, to
|
|
* avoid a tsleep() in MALLOC later.
|
|
*/
|
|
MALLOC(nowp, struct nfsclowner *, sizeof (struct nfsclowner),
|
|
M_NFSCLOWNER, M_WAITOK);
|
|
if (nfhp != NULL)
|
|
MALLOC(nop, struct nfsclopen *, sizeof (struct nfsclopen) +
|
|
fhlen - 1, M_NFSCLOPEN, M_WAITOK);
|
|
ret = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
|
|
if (ret != 0) {
|
|
FREE((caddr_t)nowp, M_NFSCLOWNER);
|
|
if (nop != NULL)
|
|
FREE((caddr_t)nop, M_NFSCLOPEN);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Get the Open iff it already exists.
|
|
* If none found, add the new one or return error, depending upon
|
|
* "create".
|
|
*/
|
|
nfscl_filllockowner(p->td_proc, own, F_POSIX);
|
|
NFSLOCKCLSTATE();
|
|
dp = NULL;
|
|
/* First check the delegation list */
|
|
if (nfhp != NULL && usedeleg) {
|
|
LIST_FOREACH(dp, NFSCLDELEGHASH(clp, nfhp, fhlen), nfsdl_hash) {
|
|
if (dp->nfsdl_fhlen == fhlen &&
|
|
!NFSBCMP(nfhp, dp->nfsdl_fh, fhlen)) {
|
|
if (!(amode & NFSV4OPEN_ACCESSWRITE) ||
|
|
(dp->nfsdl_flags & NFSCLDL_WRITE))
|
|
break;
|
|
dp = NULL;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dp != NULL)
|
|
ohp = &dp->nfsdl_owner;
|
|
else
|
|
ohp = &clp->nfsc_owner;
|
|
/* Now, search for an openowner */
|
|
LIST_FOREACH(owp, ohp, nfsow_list) {
|
|
if (!NFSBCMP(owp->nfsow_owner, own, NFSV4CL_LOCKNAMELEN))
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Create a new open, as required.
|
|
*/
|
|
nfscl_newopen(clp, dp, &owp, &nowp, &op, &nop, own, nfhp, fhlen,
|
|
newonep);
|
|
|
|
/*
|
|
* Serialize modifications to the open owner for multiple threads
|
|
* within the same process using a read/write sleep lock.
|
|
*/
|
|
if (lockit)
|
|
nfscl_lockexcl(&owp->nfsow_rwlock, NFSCLSTATEMUTEXPTR);
|
|
NFSUNLOCKCLSTATE();
|
|
if (nowp != NULL)
|
|
FREE((caddr_t)nowp, M_NFSCLOWNER);
|
|
if (nop != NULL)
|
|
FREE((caddr_t)nop, M_NFSCLOPEN);
|
|
if (owpp != NULL)
|
|
*owpp = owp;
|
|
if (opp != NULL)
|
|
*opp = op;
|
|
if (retp != NULL) {
|
|
if (nfhp != NULL && dp != NULL && nop == NULL)
|
|
/* new local open on delegation */
|
|
*retp = NFSCLOPEN_SETCRED;
|
|
else
|
|
*retp = NFSCLOPEN_OK;
|
|
}
|
|
|
|
/*
|
|
* Now, check the mode on the open and return the appropriate
|
|
* value.
|
|
*/
|
|
if (op != NULL && (amode & ~(op->nfso_mode))) {
|
|
op->nfso_mode |= amode;
|
|
if (retp != NULL && dp == NULL)
|
|
*retp = NFSCLOPEN_DOOPEN;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Create a new open, as required.
|
|
*/
|
|
static void
|
|
nfscl_newopen(struct nfsclclient *clp, struct nfscldeleg *dp,
|
|
struct nfsclowner **owpp, struct nfsclowner **nowpp, struct nfsclopen **opp,
|
|
struct nfsclopen **nopp, u_int8_t *own, u_int8_t *fhp, int fhlen,
|
|
int *newonep)
|
|
{
|
|
struct nfsclowner *owp = *owpp, *nowp;
|
|
struct nfsclopen *op, *nop;
|
|
|
|
if (nowpp != NULL)
|
|
nowp = *nowpp;
|
|
else
|
|
nowp = NULL;
|
|
if (nopp != NULL)
|
|
nop = *nopp;
|
|
else
|
|
nop = NULL;
|
|
if (owp == NULL && nowp != NULL) {
|
|
NFSBCOPY(own, nowp->nfsow_owner, NFSV4CL_LOCKNAMELEN);
|
|
LIST_INIT(&nowp->nfsow_open);
|
|
nowp->nfsow_clp = clp;
|
|
nowp->nfsow_seqid = 0;
|
|
nowp->nfsow_defunct = 0;
|
|
nfscl_lockinit(&nowp->nfsow_rwlock);
|
|
if (dp != NULL) {
|
|
newnfsstats.cllocalopenowners++;
|
|
LIST_INSERT_HEAD(&dp->nfsdl_owner, nowp, nfsow_list);
|
|
} else {
|
|
newnfsstats.clopenowners++;
|
|
LIST_INSERT_HEAD(&clp->nfsc_owner, nowp, nfsow_list);
|
|
}
|
|
owp = *owpp = nowp;
|
|
*nowpp = NULL;
|
|
if (newonep != NULL)
|
|
*newonep = 1;
|
|
}
|
|
|
|
/* If an fhp has been specified, create an Open as well. */
|
|
if (fhp != NULL) {
|
|
/* and look for the correct open, based upon FH */
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op->nfso_fhlen == fhlen &&
|
|
!NFSBCMP(op->nfso_fh, fhp, fhlen))
|
|
break;
|
|
}
|
|
if (op == NULL && nop != NULL) {
|
|
nop->nfso_own = owp;
|
|
nop->nfso_mode = 0;
|
|
nop->nfso_opencnt = 0;
|
|
nop->nfso_posixlock = 1;
|
|
nop->nfso_fhlen = fhlen;
|
|
NFSBCOPY(fhp, nop->nfso_fh, fhlen);
|
|
LIST_INIT(&nop->nfso_lock);
|
|
nop->nfso_stateid.seqid = 0;
|
|
nop->nfso_stateid.other[0] = 0;
|
|
nop->nfso_stateid.other[1] = 0;
|
|
nop->nfso_stateid.other[2] = 0;
|
|
if (dp != NULL) {
|
|
TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list);
|
|
TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp,
|
|
nfsdl_list);
|
|
dp->nfsdl_timestamp = NFSD_MONOSEC + 120;
|
|
newnfsstats.cllocalopens++;
|
|
} else {
|
|
newnfsstats.clopens++;
|
|
}
|
|
LIST_INSERT_HEAD(&owp->nfsow_open, nop, nfso_list);
|
|
*opp = nop;
|
|
*nopp = NULL;
|
|
if (newonep != NULL)
|
|
*newonep = 1;
|
|
} else {
|
|
*opp = op;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called to find/add a delegation to a client.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_deleg(mount_t mp, struct nfsclclient *clp, u_int8_t *nfhp,
|
|
int fhlen, struct ucred *cred, NFSPROC_T *p, struct nfscldeleg **dpp)
|
|
{
|
|
struct nfscldeleg *dp = *dpp, *tdp;
|
|
|
|
/*
|
|
* First, if we have received a Read delegation for a file on a
|
|
* read/write file system, just return it, because they aren't
|
|
* useful, imho.
|
|
*/
|
|
if (mp != NULL && dp != NULL && !NFSMNT_RDONLY(mp) &&
|
|
(dp->nfsdl_flags & NFSCLDL_READ)) {
|
|
(void) nfscl_trydelegreturn(dp, cred, VFSTONFS(mp), p);
|
|
FREE((caddr_t)dp, M_NFSCLDELEG);
|
|
*dpp = NULL;
|
|
return (0);
|
|
}
|
|
|
|
/* Look for the correct deleg, based upon FH */
|
|
NFSLOCKCLSTATE();
|
|
tdp = nfscl_finddeleg(clp, nfhp, fhlen);
|
|
if (tdp == NULL) {
|
|
if (dp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (NFSERR_BADSTATEID);
|
|
}
|
|
*dpp = NULL;
|
|
TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, nfsdl_list);
|
|
LIST_INSERT_HEAD(NFSCLDELEGHASH(clp, nfhp, fhlen), dp,
|
|
nfsdl_hash);
|
|
dp->nfsdl_timestamp = NFSD_MONOSEC + 120;
|
|
newnfsstats.cldelegates++;
|
|
nfscl_delegcnt++;
|
|
} else {
|
|
/*
|
|
* Delegation already exists, what do we do if a new one??
|
|
*/
|
|
if (dp != NULL) {
|
|
printf("Deleg already exists!\n");
|
|
FREE((caddr_t)dp, M_NFSCLDELEG);
|
|
*dpp = NULL;
|
|
} else {
|
|
*dpp = tdp;
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Find a delegation for this file handle. Return NULL upon failure.
|
|
*/
|
|
static struct nfscldeleg *
|
|
nfscl_finddeleg(struct nfsclclient *clp, u_int8_t *fhp, int fhlen)
|
|
{
|
|
struct nfscldeleg *dp;
|
|
|
|
LIST_FOREACH(dp, NFSCLDELEGHASH(clp, fhp, fhlen), nfsdl_hash) {
|
|
if (dp->nfsdl_fhlen == fhlen &&
|
|
!NFSBCMP(dp->nfsdl_fh, fhp, fhlen))
|
|
break;
|
|
}
|
|
return (dp);
|
|
}
|
|
|
|
/*
|
|
* Get a stateid for an I/O operation. First, look for an open and iff
|
|
* found, return either a lockowner stateid or the open stateid.
|
|
* If no Open is found, just return error and the special stateid of all zeros.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_getstateid(vnode_t vp, u_int8_t *nfhp, int fhlen, u_int32_t mode,
|
|
int fords, struct ucred *cred, NFSPROC_T *p, nfsv4stateid_t *stateidp,
|
|
void **lckpp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclowner *owp;
|
|
struct nfsclopen *op = NULL;
|
|
struct nfscllockowner *lp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np;
|
|
u_int8_t own[NFSV4CL_LOCKNAMELEN];
|
|
int error, done;
|
|
|
|
*lckpp = NULL;
|
|
/*
|
|
* Initially, just set the special stateid of all zeros.
|
|
* (Don't do this for a DS, since the special stateid can't be used.)
|
|
*/
|
|
if (fords == 0) {
|
|
stateidp->seqid = 0;
|
|
stateidp->other[0] = 0;
|
|
stateidp->other[1] = 0;
|
|
stateidp->other[2] = 0;
|
|
}
|
|
if (vnode_vtype(vp) != VREG)
|
|
return (EISDIR);
|
|
np = VTONFS(vp);
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(VFSTONFS(vnode_mount(vp)));
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (EACCES);
|
|
}
|
|
|
|
/*
|
|
* Wait for recovery to complete.
|
|
*/
|
|
while ((clp->nfsc_flags & NFSCLFLAGS_RECVRINPROG))
|
|
(void) nfsmsleep(&clp->nfsc_flags, NFSCLSTATEMUTEXPTR,
|
|
PZERO, "nfsrecvr", NULL);
|
|
|
|
/*
|
|
* First, look for a delegation.
|
|
*/
|
|
LIST_FOREACH(dp, NFSCLDELEGHASH(clp, nfhp, fhlen), nfsdl_hash) {
|
|
if (dp->nfsdl_fhlen == fhlen &&
|
|
!NFSBCMP(nfhp, dp->nfsdl_fh, fhlen)) {
|
|
if (!(mode & NFSV4OPEN_ACCESSWRITE) ||
|
|
(dp->nfsdl_flags & NFSCLDL_WRITE)) {
|
|
stateidp->seqid = dp->nfsdl_stateid.seqid;
|
|
stateidp->other[0] = dp->nfsdl_stateid.other[0];
|
|
stateidp->other[1] = dp->nfsdl_stateid.other[1];
|
|
stateidp->other[2] = dp->nfsdl_stateid.other[2];
|
|
if (!(np->n_flag & NDELEGRECALL)) {
|
|
TAILQ_REMOVE(&clp->nfsc_deleg, dp,
|
|
nfsdl_list);
|
|
TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp,
|
|
nfsdl_list);
|
|
dp->nfsdl_timestamp = NFSD_MONOSEC +
|
|
120;
|
|
dp->nfsdl_rwlock.nfslock_usecnt++;
|
|
*lckpp = (void *)&dp->nfsdl_rwlock;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (p != NULL) {
|
|
/*
|
|
* If p != NULL, we want to search the parentage tree
|
|
* for a matching OpenOwner and use that.
|
|
*/
|
|
nfscl_filllockowner(p->td_proc, own, F_POSIX);
|
|
lp = NULL;
|
|
error = nfscl_getopen(&clp->nfsc_owner, nfhp, fhlen, own, own,
|
|
mode, &lp, &op);
|
|
if (error == 0 && lp != NULL && fords == 0) {
|
|
/* Don't return a lock stateid for a DS. */
|
|
stateidp->seqid =
|
|
lp->nfsl_stateid.seqid;
|
|
stateidp->other[0] =
|
|
lp->nfsl_stateid.other[0];
|
|
stateidp->other[1] =
|
|
lp->nfsl_stateid.other[1];
|
|
stateidp->other[2] =
|
|
lp->nfsl_stateid.other[2];
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
}
|
|
if (op == NULL) {
|
|
/* If not found, just look for any OpenOwner that will work. */
|
|
done = 0;
|
|
owp = LIST_FIRST(&clp->nfsc_owner);
|
|
while (!done && owp != NULL) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op->nfso_fhlen == fhlen &&
|
|
!NFSBCMP(op->nfso_fh, nfhp, fhlen) &&
|
|
(mode & op->nfso_mode) == mode) {
|
|
done = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (!done)
|
|
owp = LIST_NEXT(owp, nfsow_list);
|
|
}
|
|
if (!done) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (ENOENT);
|
|
}
|
|
/*
|
|
* For read aheads or write behinds, use the open cred.
|
|
* A read ahead or write behind is indicated by p == NULL.
|
|
*/
|
|
if (p == NULL)
|
|
newnfs_copycred(&op->nfso_cred, cred);
|
|
}
|
|
|
|
/*
|
|
* No lock stateid, so return the open stateid.
|
|
*/
|
|
stateidp->seqid = op->nfso_stateid.seqid;
|
|
stateidp->other[0] = op->nfso_stateid.other[0];
|
|
stateidp->other[1] = op->nfso_stateid.other[1];
|
|
stateidp->other[2] = op->nfso_stateid.other[2];
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Search for a matching file, mode and, optionally, lockowner.
|
|
*/
|
|
static int
|
|
nfscl_getopen(struct nfsclownerhead *ohp, u_int8_t *nfhp, int fhlen,
|
|
u_int8_t *openown, u_int8_t *lockown, u_int32_t mode,
|
|
struct nfscllockowner **lpp, struct nfsclopen **opp)
|
|
{
|
|
struct nfsclowner *owp;
|
|
struct nfsclopen *op, *rop, *rop2;
|
|
struct nfscllockowner *lp;
|
|
int keep_looping;
|
|
|
|
if (lpp != NULL)
|
|
*lpp = NULL;
|
|
/*
|
|
* rop will be set to the open to be returned. There are three
|
|
* variants of this, all for an open of the correct file:
|
|
* 1 - A match of lockown.
|
|
* 2 - A match of the openown, when no lockown match exists.
|
|
* 3 - A match for any open, if no openown or lockown match exists.
|
|
* Looking for #2 over #3 probably isn't necessary, but since
|
|
* RFC3530 is vague w.r.t. the relationship between openowners and
|
|
* lockowners, I think this is the safer way to go.
|
|
*/
|
|
rop = NULL;
|
|
rop2 = NULL;
|
|
keep_looping = 1;
|
|
/* Search the client list */
|
|
owp = LIST_FIRST(ohp);
|
|
while (owp != NULL && keep_looping != 0) {
|
|
/* and look for the correct open */
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
while (op != NULL && keep_looping != 0) {
|
|
if (op->nfso_fhlen == fhlen &&
|
|
!NFSBCMP(op->nfso_fh, nfhp, fhlen)
|
|
&& (op->nfso_mode & mode) == mode) {
|
|
if (lpp != NULL) {
|
|
/* Now look for a matching lockowner. */
|
|
LIST_FOREACH(lp, &op->nfso_lock,
|
|
nfsl_list) {
|
|
if (!NFSBCMP(lp->nfsl_owner,
|
|
lockown,
|
|
NFSV4CL_LOCKNAMELEN)) {
|
|
*lpp = lp;
|
|
rop = op;
|
|
keep_looping = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (rop == NULL && !NFSBCMP(owp->nfsow_owner,
|
|
openown, NFSV4CL_LOCKNAMELEN)) {
|
|
rop = op;
|
|
if (lpp == NULL)
|
|
keep_looping = 0;
|
|
}
|
|
if (rop2 == NULL)
|
|
rop2 = op;
|
|
}
|
|
op = LIST_NEXT(op, nfso_list);
|
|
}
|
|
owp = LIST_NEXT(owp, nfsow_list);
|
|
}
|
|
if (rop == NULL)
|
|
rop = rop2;
|
|
if (rop == NULL)
|
|
return (EBADF);
|
|
*opp = rop;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Release use of an open owner. Called when open operations are done
|
|
* with the open owner.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_ownerrelease(struct nfsclowner *owp, __unused int error,
|
|
__unused int candelete, int unlocked)
|
|
{
|
|
|
|
if (owp == NULL)
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
if (!unlocked)
|
|
nfscl_lockunlock(&owp->nfsow_rwlock);
|
|
nfscl_clrelease(owp->nfsow_clp);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Release use of an open structure under an open owner.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_openrelease(struct nfsclopen *op, int error, int candelete)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclowner *owp;
|
|
|
|
if (op == NULL)
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
owp = op->nfso_own;
|
|
nfscl_lockunlock(&owp->nfsow_rwlock);
|
|
clp = owp->nfsow_clp;
|
|
if (error && candelete && op->nfso_opencnt == 0)
|
|
nfscl_freeopen(op, 0);
|
|
nfscl_clrelease(clp);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Called to get a clientid structure. It will optionally lock the
|
|
* client data structures to do the SetClientId/SetClientId_confirm,
|
|
* but will release that lock and return the clientid with a refernce
|
|
* count on it.
|
|
* If the "cred" argument is NULL, a new clientid should not be created.
|
|
* If the "p" argument is NULL, a SetClientID/SetClientIDConfirm cannot
|
|
* be done.
|
|
* The start_renewthread argument tells nfscl_getcl() to start a renew
|
|
* thread if this creates a new clp.
|
|
* It always clpp with a reference count on it, unless returning an error.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_getcl(struct mount *mp, struct ucred *cred, NFSPROC_T *p,
|
|
int start_renewthread, struct nfsclclient **clpp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclclient *newclp = NULL;
|
|
struct nfsmount *nmp;
|
|
char uuid[HOSTUUIDLEN];
|
|
int igotlock = 0, error, trystalecnt, clidinusedelay, i;
|
|
u_int16_t idlen = 0;
|
|
|
|
nmp = VFSTONFS(mp);
|
|
if (cred != NULL) {
|
|
getcredhostuuid(cred, uuid, sizeof uuid);
|
|
idlen = strlen(uuid);
|
|
if (idlen > 0)
|
|
idlen += sizeof (u_int64_t);
|
|
else
|
|
idlen += sizeof (u_int64_t) + 16; /* 16 random bytes */
|
|
MALLOC(newclp, struct nfsclclient *,
|
|
sizeof (struct nfsclclient) + idlen - 1, M_NFSCLCLIENT,
|
|
M_WAITOK | M_ZERO);
|
|
}
|
|
NFSLOCKCLSTATE();
|
|
/*
|
|
* If a forced dismount is already in progress, don't
|
|
* allocate a new clientid and get out now. For the case where
|
|
* clp != NULL, this is a harmless optimization.
|
|
*/
|
|
if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
|
|
NFSUNLOCKCLSTATE();
|
|
if (newclp != NULL)
|
|
free(newclp, M_NFSCLCLIENT);
|
|
return (EBADF);
|
|
}
|
|
clp = nmp->nm_clp;
|
|
if (clp == NULL) {
|
|
if (newclp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (EACCES);
|
|
}
|
|
clp = newclp;
|
|
clp->nfsc_idlen = idlen;
|
|
LIST_INIT(&clp->nfsc_owner);
|
|
TAILQ_INIT(&clp->nfsc_deleg);
|
|
TAILQ_INIT(&clp->nfsc_layout);
|
|
LIST_INIT(&clp->nfsc_devinfo);
|
|
for (i = 0; i < NFSCLDELEGHASHSIZE; i++)
|
|
LIST_INIT(&clp->nfsc_deleghash[i]);
|
|
for (i = 0; i < NFSCLLAYOUTHASHSIZE; i++)
|
|
LIST_INIT(&clp->nfsc_layouthash[i]);
|
|
clp->nfsc_flags = NFSCLFLAGS_INITED;
|
|
clp->nfsc_clientidrev = 1;
|
|
clp->nfsc_cbident = nfscl_nextcbident();
|
|
nfscl_fillclid(nmp->nm_clval, uuid, clp->nfsc_id,
|
|
clp->nfsc_idlen);
|
|
LIST_INSERT_HEAD(&nfsclhead, clp, nfsc_list);
|
|
nmp->nm_clp = clp;
|
|
clp->nfsc_nmp = nmp;
|
|
NFSUNLOCKCLSTATE();
|
|
if (start_renewthread != 0)
|
|
nfscl_start_renewthread(clp);
|
|
} else {
|
|
NFSUNLOCKCLSTATE();
|
|
if (newclp != NULL)
|
|
free(newclp, M_NFSCLCLIENT);
|
|
}
|
|
NFSLOCKCLSTATE();
|
|
while ((clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID) == 0 && !igotlock &&
|
|
(mp->mnt_kern_flag & MNTK_UNMOUNTF) == 0)
|
|
igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
|
|
NFSCLSTATEMUTEXPTR, mp);
|
|
if (!igotlock)
|
|
nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR, mp);
|
|
if (igotlock == 0 && (mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
|
|
/*
|
|
* Both nfsv4_lock() and nfsv4_getref() know to check
|
|
* for MNTK_UNMOUNTF and return without sleeping to
|
|
* wait for the exclusive lock to be released, since it
|
|
* might be held by nfscl_umount() and we need to get out
|
|
* now for that case and not wait until nfscl_umount()
|
|
* releases it.
|
|
*/
|
|
NFSUNLOCKCLSTATE();
|
|
return (EBADF);
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
|
|
/*
|
|
* If it needs a clientid, do the setclientid now.
|
|
*/
|
|
if ((clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID) == 0) {
|
|
if (!igotlock)
|
|
panic("nfscl_clget");
|
|
if (p == NULL || cred == NULL) {
|
|
NFSLOCKCLSTATE();
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
return (EACCES);
|
|
}
|
|
/*
|
|
* If RFC3530 Sec. 14.2.33 is taken literally,
|
|
* NFSERR_CLIDINUSE will be returned persistently for the
|
|
* case where a new mount of the same file system is using
|
|
* a different principal. In practice, NFSERR_CLIDINUSE is
|
|
* only returned when there is outstanding unexpired state
|
|
* on the clientid. As such, try for twice the lease
|
|
* interval, if we know what that is. Otherwise, make a
|
|
* wild ass guess.
|
|
* The case of returning NFSERR_STALECLIENTID is far less
|
|
* likely, but might occur if there is a significant delay
|
|
* between doing the SetClientID and SetClientIDConfirm Ops,
|
|
* such that the server throws away the clientid before
|
|
* receiving the SetClientIDConfirm.
|
|
*/
|
|
if (clp->nfsc_renew > 0)
|
|
clidinusedelay = NFSCL_LEASE(clp->nfsc_renew) * 2;
|
|
else
|
|
clidinusedelay = 120;
|
|
trystalecnt = 3;
|
|
do {
|
|
error = nfsrpc_setclient(nmp, clp, 0, cred, p);
|
|
if (error == NFSERR_STALECLIENTID ||
|
|
error == NFSERR_STALEDONTRECOVER ||
|
|
error == NFSERR_BADSESSION ||
|
|
error == NFSERR_CLIDINUSE) {
|
|
(void) nfs_catnap(PZERO, error, "nfs_setcl");
|
|
}
|
|
} while (((error == NFSERR_STALECLIENTID ||
|
|
error == NFSERR_BADSESSION ||
|
|
error == NFSERR_STALEDONTRECOVER) && --trystalecnt > 0) ||
|
|
(error == NFSERR_CLIDINUSE && --clidinusedelay > 0));
|
|
if (error) {
|
|
NFSLOCKCLSTATE();
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
return (error);
|
|
}
|
|
clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID;
|
|
}
|
|
if (igotlock) {
|
|
NFSLOCKCLSTATE();
|
|
nfsv4_unlock(&clp->nfsc_lock, 1);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
*clpp = clp;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Get a reference to a clientid and return it, if valid.
|
|
*/
|
|
APPLESTATIC struct nfsclclient *
|
|
nfscl_findcl(struct nfsmount *nmp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
|
|
clp = nmp->nm_clp;
|
|
if (clp == NULL || !(clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID))
|
|
return (NULL);
|
|
return (clp);
|
|
}
|
|
|
|
/*
|
|
* Release the clientid structure. It may be locked or reference counted.
|
|
*/
|
|
static void
|
|
nfscl_clrelease(struct nfsclclient *clp)
|
|
{
|
|
|
|
if (clp->nfsc_lock.nfslock_lock & NFSV4LOCK_LOCK)
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
else
|
|
nfsv4_relref(&clp->nfsc_lock);
|
|
}
|
|
|
|
/*
|
|
* External call for nfscl_clrelease.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_clientrelease(struct nfsclclient *clp)
|
|
{
|
|
|
|
NFSLOCKCLSTATE();
|
|
if (clp->nfsc_lock.nfslock_lock & NFSV4LOCK_LOCK)
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
else
|
|
nfsv4_relref(&clp->nfsc_lock);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Called when wanting to lock a byte region.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_getbytelock(vnode_t vp, u_int64_t off, u_int64_t len,
|
|
short type, struct ucred *cred, NFSPROC_T *p, struct nfsclclient *rclp,
|
|
int recovery, void *id, int flags, u_int8_t *rownp, u_int8_t *ropenownp,
|
|
struct nfscllockowner **lpp, int *newonep, int *donelocallyp)
|
|
{
|
|
struct nfscllockowner *lp;
|
|
struct nfsclopen *op;
|
|
struct nfsclclient *clp;
|
|
struct nfscllockowner *nlp;
|
|
struct nfscllock *nlop, *otherlop;
|
|
struct nfscldeleg *dp = NULL, *ldp = NULL;
|
|
struct nfscllockownerhead *lhp = NULL;
|
|
struct nfsnode *np;
|
|
u_int8_t own[NFSV4CL_LOCKNAMELEN], *ownp, openown[NFSV4CL_LOCKNAMELEN];
|
|
u_int8_t *openownp;
|
|
int error = 0, ret, donelocally = 0;
|
|
u_int32_t mode;
|
|
|
|
/* For Lock Ops, the open mode doesn't matter, so use 0 to match any. */
|
|
mode = 0;
|
|
np = VTONFS(vp);
|
|
*lpp = NULL;
|
|
lp = NULL;
|
|
*newonep = 0;
|
|
*donelocallyp = 0;
|
|
|
|
/*
|
|
* Might need these, so MALLOC them now, to
|
|
* avoid a tsleep() in MALLOC later.
|
|
*/
|
|
MALLOC(nlp, struct nfscllockowner *,
|
|
sizeof (struct nfscllockowner), M_NFSCLLOCKOWNER, M_WAITOK);
|
|
MALLOC(otherlop, struct nfscllock *,
|
|
sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
|
|
MALLOC(nlop, struct nfscllock *,
|
|
sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
|
|
nlop->nfslo_type = type;
|
|
nlop->nfslo_first = off;
|
|
if (len == NFS64BITSSET) {
|
|
nlop->nfslo_end = NFS64BITSSET;
|
|
} else {
|
|
nlop->nfslo_end = off + len;
|
|
if (nlop->nfslo_end <= nlop->nfslo_first)
|
|
error = NFSERR_INVAL;
|
|
}
|
|
|
|
if (!error) {
|
|
if (recovery)
|
|
clp = rclp;
|
|
else
|
|
error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
|
|
}
|
|
if (error) {
|
|
FREE((caddr_t)nlp, M_NFSCLLOCKOWNER);
|
|
FREE((caddr_t)otherlop, M_NFSCLLOCK);
|
|
FREE((caddr_t)nlop, M_NFSCLLOCK);
|
|
return (error);
|
|
}
|
|
|
|
op = NULL;
|
|
if (recovery) {
|
|
ownp = rownp;
|
|
openownp = ropenownp;
|
|
} else {
|
|
nfscl_filllockowner(id, own, flags);
|
|
ownp = own;
|
|
nfscl_filllockowner(p->td_proc, openown, F_POSIX);
|
|
openownp = openown;
|
|
}
|
|
if (!recovery) {
|
|
NFSLOCKCLSTATE();
|
|
/*
|
|
* First, search for a delegation. If one exists for this file,
|
|
* the lock can be done locally against it, so long as there
|
|
* isn't a local lock conflict.
|
|
*/
|
|
ldp = dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
|
|
np->n_fhp->nfh_len);
|
|
/* Just sanity check for correct type of delegation */
|
|
if (dp != NULL && ((dp->nfsdl_flags &
|
|
(NFSCLDL_RECALL | NFSCLDL_DELEGRET)) != 0 ||
|
|
(type == F_WRLCK &&
|
|
(dp->nfsdl_flags & NFSCLDL_WRITE) == 0)))
|
|
dp = NULL;
|
|
}
|
|
if (dp != NULL) {
|
|
/* Now, find an open and maybe a lockowner. */
|
|
ret = nfscl_getopen(&dp->nfsdl_owner, np->n_fhp->nfh_fh,
|
|
np->n_fhp->nfh_len, openownp, ownp, mode, NULL, &op);
|
|
if (ret)
|
|
ret = nfscl_getopen(&clp->nfsc_owner,
|
|
np->n_fhp->nfh_fh, np->n_fhp->nfh_len, openownp,
|
|
ownp, mode, NULL, &op);
|
|
if (!ret) {
|
|
lhp = &dp->nfsdl_lock;
|
|
TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list);
|
|
TAILQ_INSERT_HEAD(&clp->nfsc_deleg, dp, nfsdl_list);
|
|
dp->nfsdl_timestamp = NFSD_MONOSEC + 120;
|
|
donelocally = 1;
|
|
} else {
|
|
dp = NULL;
|
|
}
|
|
}
|
|
if (!donelocally) {
|
|
/*
|
|
* Get the related Open and maybe lockowner.
|
|
*/
|
|
error = nfscl_getopen(&clp->nfsc_owner,
|
|
np->n_fhp->nfh_fh, np->n_fhp->nfh_len, openownp,
|
|
ownp, mode, &lp, &op);
|
|
if (!error)
|
|
lhp = &op->nfso_lock;
|
|
}
|
|
if (!error && !recovery)
|
|
error = nfscl_localconflict(clp, np->n_fhp->nfh_fh,
|
|
np->n_fhp->nfh_len, nlop, ownp, ldp, NULL);
|
|
if (error) {
|
|
if (!recovery) {
|
|
nfscl_clrelease(clp);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
FREE((caddr_t)nlp, M_NFSCLLOCKOWNER);
|
|
FREE((caddr_t)otherlop, M_NFSCLLOCK);
|
|
FREE((caddr_t)nlop, M_NFSCLLOCK);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Ok, see if a lockowner exists and create one, as required.
|
|
*/
|
|
if (lp == NULL)
|
|
LIST_FOREACH(lp, lhp, nfsl_list) {
|
|
if (!NFSBCMP(lp->nfsl_owner, ownp, NFSV4CL_LOCKNAMELEN))
|
|
break;
|
|
}
|
|
if (lp == NULL) {
|
|
NFSBCOPY(ownp, nlp->nfsl_owner, NFSV4CL_LOCKNAMELEN);
|
|
if (recovery)
|
|
NFSBCOPY(ropenownp, nlp->nfsl_openowner,
|
|
NFSV4CL_LOCKNAMELEN);
|
|
else
|
|
NFSBCOPY(op->nfso_own->nfsow_owner, nlp->nfsl_openowner,
|
|
NFSV4CL_LOCKNAMELEN);
|
|
nlp->nfsl_seqid = 0;
|
|
nlp->nfsl_lockflags = flags;
|
|
nlp->nfsl_inprog = NULL;
|
|
nfscl_lockinit(&nlp->nfsl_rwlock);
|
|
LIST_INIT(&nlp->nfsl_lock);
|
|
if (donelocally) {
|
|
nlp->nfsl_open = NULL;
|
|
newnfsstats.cllocallockowners++;
|
|
} else {
|
|
nlp->nfsl_open = op;
|
|
newnfsstats.cllockowners++;
|
|
}
|
|
LIST_INSERT_HEAD(lhp, nlp, nfsl_list);
|
|
lp = nlp;
|
|
nlp = NULL;
|
|
*newonep = 1;
|
|
}
|
|
|
|
/*
|
|
* Now, update the byte ranges for locks.
|
|
*/
|
|
ret = nfscl_updatelock(lp, &nlop, &otherlop, donelocally);
|
|
if (!ret)
|
|
donelocally = 1;
|
|
if (donelocally) {
|
|
*donelocallyp = 1;
|
|
if (!recovery)
|
|
nfscl_clrelease(clp);
|
|
} else {
|
|
/*
|
|
* Serial modifications on the lock owner for multiple threads
|
|
* for the same process using a read/write lock.
|
|
*/
|
|
if (!recovery)
|
|
nfscl_lockexcl(&lp->nfsl_rwlock, NFSCLSTATEMUTEXPTR);
|
|
}
|
|
if (!recovery)
|
|
NFSUNLOCKCLSTATE();
|
|
|
|
if (nlp)
|
|
FREE((caddr_t)nlp, M_NFSCLLOCKOWNER);
|
|
if (nlop)
|
|
FREE((caddr_t)nlop, M_NFSCLLOCK);
|
|
if (otherlop)
|
|
FREE((caddr_t)otherlop, M_NFSCLLOCK);
|
|
|
|
*lpp = lp;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Called to unlock a byte range, for LockU.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_relbytelock(vnode_t vp, u_int64_t off, u_int64_t len,
|
|
__unused struct ucred *cred, NFSPROC_T *p, int callcnt,
|
|
struct nfsclclient *clp, void *id, int flags,
|
|
struct nfscllockowner **lpp, int *dorpcp)
|
|
{
|
|
struct nfscllockowner *lp;
|
|
struct nfsclowner *owp;
|
|
struct nfsclopen *op;
|
|
struct nfscllock *nlop, *other_lop = NULL;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np;
|
|
u_int8_t own[NFSV4CL_LOCKNAMELEN];
|
|
int ret = 0, fnd;
|
|
|
|
np = VTONFS(vp);
|
|
*lpp = NULL;
|
|
*dorpcp = 0;
|
|
|
|
/*
|
|
* Might need these, so MALLOC them now, to
|
|
* avoid a tsleep() in MALLOC later.
|
|
*/
|
|
MALLOC(nlop, struct nfscllock *,
|
|
sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
|
|
nlop->nfslo_type = F_UNLCK;
|
|
nlop->nfslo_first = off;
|
|
if (len == NFS64BITSSET) {
|
|
nlop->nfslo_end = NFS64BITSSET;
|
|
} else {
|
|
nlop->nfslo_end = off + len;
|
|
if (nlop->nfslo_end <= nlop->nfslo_first) {
|
|
FREE((caddr_t)nlop, M_NFSCLLOCK);
|
|
return (NFSERR_INVAL);
|
|
}
|
|
}
|
|
if (callcnt == 0) {
|
|
MALLOC(other_lop, struct nfscllock *,
|
|
sizeof (struct nfscllock), M_NFSCLLOCK, M_WAITOK);
|
|
*other_lop = *nlop;
|
|
}
|
|
nfscl_filllockowner(id, own, flags);
|
|
dp = NULL;
|
|
NFSLOCKCLSTATE();
|
|
if (callcnt == 0)
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
|
|
np->n_fhp->nfh_len);
|
|
|
|
/*
|
|
* First, unlock any local regions on a delegation.
|
|
*/
|
|
if (dp != NULL) {
|
|
/* Look for this lockowner. */
|
|
LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
|
|
if (!NFSBCMP(lp->nfsl_owner, own,
|
|
NFSV4CL_LOCKNAMELEN))
|
|
break;
|
|
}
|
|
if (lp != NULL)
|
|
/* Use other_lop, so nlop is still available */
|
|
(void)nfscl_updatelock(lp, &other_lop, NULL, 1);
|
|
}
|
|
|
|
/*
|
|
* Now, find a matching open/lockowner that hasn't already been done,
|
|
* as marked by nfsl_inprog.
|
|
*/
|
|
lp = NULL;
|
|
fnd = 0;
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op->nfso_fhlen == np->n_fhp->nfh_len &&
|
|
!NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) {
|
|
LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
|
|
if (lp->nfsl_inprog == NULL &&
|
|
!NFSBCMP(lp->nfsl_owner, own,
|
|
NFSV4CL_LOCKNAMELEN)) {
|
|
fnd = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (fnd)
|
|
break;
|
|
}
|
|
}
|
|
if (fnd)
|
|
break;
|
|
}
|
|
|
|
if (lp != NULL) {
|
|
ret = nfscl_updatelock(lp, &nlop, NULL, 0);
|
|
if (ret)
|
|
*dorpcp = 1;
|
|
/*
|
|
* Serial modifications on the lock owner for multiple
|
|
* threads for the same process using a read/write lock.
|
|
*/
|
|
lp->nfsl_inprog = p;
|
|
nfscl_lockexcl(&lp->nfsl_rwlock, NFSCLSTATEMUTEXPTR);
|
|
*lpp = lp;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
if (nlop)
|
|
FREE((caddr_t)nlop, M_NFSCLLOCK);
|
|
if (other_lop)
|
|
FREE((caddr_t)other_lop, M_NFSCLLOCK);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Release all lockowners marked in progess for this process and file.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_releasealllocks(struct nfsclclient *clp, vnode_t vp, NFSPROC_T *p,
|
|
void *id, int flags)
|
|
{
|
|
struct nfsclowner *owp;
|
|
struct nfsclopen *op;
|
|
struct nfscllockowner *lp;
|
|
struct nfsnode *np;
|
|
u_int8_t own[NFSV4CL_LOCKNAMELEN];
|
|
|
|
np = VTONFS(vp);
|
|
nfscl_filllockowner(id, own, flags);
|
|
NFSLOCKCLSTATE();
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op->nfso_fhlen == np->n_fhp->nfh_len &&
|
|
!NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) {
|
|
LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
|
|
if (lp->nfsl_inprog == p &&
|
|
!NFSBCMP(lp->nfsl_owner, own,
|
|
NFSV4CL_LOCKNAMELEN)) {
|
|
lp->nfsl_inprog = NULL;
|
|
nfscl_lockunlock(&lp->nfsl_rwlock);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
nfscl_clrelease(clp);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Called to find out if any bytes within the byte range specified are
|
|
* write locked by the calling process. Used to determine if flushing
|
|
* is required before a LockU.
|
|
* If in doubt, return 1, so the flush will occur.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_checkwritelocked(vnode_t vp, struct flock *fl,
|
|
struct ucred *cred, NFSPROC_T *p, void *id, int flags)
|
|
{
|
|
struct nfsclowner *owp;
|
|
struct nfscllockowner *lp;
|
|
struct nfsclopen *op;
|
|
struct nfsclclient *clp;
|
|
struct nfscllock *lop;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np;
|
|
u_int64_t off, end;
|
|
u_int8_t own[NFSV4CL_LOCKNAMELEN];
|
|
int error = 0;
|
|
|
|
np = VTONFS(vp);
|
|
switch (fl->l_whence) {
|
|
case SEEK_SET:
|
|
case SEEK_CUR:
|
|
/*
|
|
* Caller is responsible for adding any necessary offset
|
|
* when SEEK_CUR is used.
|
|
*/
|
|
off = fl->l_start;
|
|
break;
|
|
case SEEK_END:
|
|
off = np->n_size + fl->l_start;
|
|
break;
|
|
default:
|
|
return (1);
|
|
};
|
|
if (fl->l_len != 0) {
|
|
end = off + fl->l_len;
|
|
if (end < off)
|
|
return (1);
|
|
} else {
|
|
end = NFS64BITSSET;
|
|
}
|
|
|
|
error = nfscl_getcl(vnode_mount(vp), cred, p, 1, &clp);
|
|
if (error)
|
|
return (1);
|
|
nfscl_filllockowner(id, own, flags);
|
|
NFSLOCKCLSTATE();
|
|
|
|
/*
|
|
* First check the delegation locks.
|
|
*/
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (dp != NULL) {
|
|
LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
|
|
if (!NFSBCMP(lp->nfsl_owner, own,
|
|
NFSV4CL_LOCKNAMELEN))
|
|
break;
|
|
}
|
|
if (lp != NULL) {
|
|
LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
|
|
if (lop->nfslo_first >= end)
|
|
break;
|
|
if (lop->nfslo_end <= off)
|
|
continue;
|
|
if (lop->nfslo_type == F_WRLCK) {
|
|
nfscl_clrelease(clp);
|
|
NFSUNLOCKCLSTATE();
|
|
return (1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now, check state against the server.
|
|
*/
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op->nfso_fhlen == np->n_fhp->nfh_len &&
|
|
!NFSBCMP(op->nfso_fh, np->n_fhp->nfh_fh, op->nfso_fhlen)) {
|
|
LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
|
|
if (!NFSBCMP(lp->nfsl_owner, own,
|
|
NFSV4CL_LOCKNAMELEN))
|
|
break;
|
|
}
|
|
if (lp != NULL) {
|
|
LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
|
|
if (lop->nfslo_first >= end)
|
|
break;
|
|
if (lop->nfslo_end <= off)
|
|
continue;
|
|
if (lop->nfslo_type == F_WRLCK) {
|
|
nfscl_clrelease(clp);
|
|
NFSUNLOCKCLSTATE();
|
|
return (1);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
nfscl_clrelease(clp);
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Release a byte range lock owner structure.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_lockrelease(struct nfscllockowner *lp, int error, int candelete)
|
|
{
|
|
struct nfsclclient *clp;
|
|
|
|
if (lp == NULL)
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
clp = lp->nfsl_open->nfso_own->nfsow_clp;
|
|
if (error != 0 && candelete &&
|
|
(lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED) == 0)
|
|
nfscl_freelockowner(lp, 0);
|
|
else
|
|
nfscl_lockunlock(&lp->nfsl_rwlock);
|
|
nfscl_clrelease(clp);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Free up an open structure and any associated byte range lock structures.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_freeopen(struct nfsclopen *op, int local)
|
|
{
|
|
|
|
LIST_REMOVE(op, nfso_list);
|
|
nfscl_freealllocks(&op->nfso_lock, local);
|
|
FREE((caddr_t)op, M_NFSCLOPEN);
|
|
if (local)
|
|
newnfsstats.cllocalopens--;
|
|
else
|
|
newnfsstats.clopens--;
|
|
}
|
|
|
|
/*
|
|
* Free up all lock owners and associated locks.
|
|
*/
|
|
static void
|
|
nfscl_freealllocks(struct nfscllockownerhead *lhp, int local)
|
|
{
|
|
struct nfscllockowner *lp, *nlp;
|
|
|
|
LIST_FOREACH_SAFE(lp, lhp, nfsl_list, nlp) {
|
|
if ((lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED))
|
|
panic("nfscllckw");
|
|
nfscl_freelockowner(lp, local);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called for an Open when NFSERR_EXPIRED is received from the server.
|
|
* If there are no byte range locks nor a Share Deny lost, try to do a
|
|
* fresh Open. Otherwise, free the open.
|
|
*/
|
|
static int
|
|
nfscl_expireopen(struct nfsclclient *clp, struct nfsclopen *op,
|
|
struct nfsmount *nmp, struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfscllockowner *lp;
|
|
struct nfscldeleg *dp;
|
|
int mustdelete = 0, error;
|
|
|
|
/*
|
|
* Look for any byte range lock(s).
|
|
*/
|
|
LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
|
|
if (!LIST_EMPTY(&lp->nfsl_lock)) {
|
|
mustdelete = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If no byte range lock(s) nor a Share deny, try to re-open.
|
|
*/
|
|
if (!mustdelete && (op->nfso_mode & NFSLCK_DENYBITS) == 0) {
|
|
newnfs_copycred(&op->nfso_cred, cred);
|
|
dp = NULL;
|
|
error = nfsrpc_reopen(nmp, op->nfso_fh,
|
|
op->nfso_fhlen, op->nfso_mode, op, &dp, cred, p);
|
|
if (error) {
|
|
mustdelete = 1;
|
|
if (dp != NULL) {
|
|
FREE((caddr_t)dp, M_NFSCLDELEG);
|
|
dp = NULL;
|
|
}
|
|
}
|
|
if (dp != NULL)
|
|
nfscl_deleg(nmp->nm_mountp, clp, op->nfso_fh,
|
|
op->nfso_fhlen, cred, p, &dp);
|
|
}
|
|
|
|
/*
|
|
* If a byte range lock or Share deny or couldn't re-open, free it.
|
|
*/
|
|
if (mustdelete)
|
|
nfscl_freeopen(op, 0);
|
|
return (mustdelete);
|
|
}
|
|
|
|
/*
|
|
* Free up an open owner structure.
|
|
*/
|
|
static void
|
|
nfscl_freeopenowner(struct nfsclowner *owp, int local)
|
|
{
|
|
|
|
LIST_REMOVE(owp, nfsow_list);
|
|
FREE((caddr_t)owp, M_NFSCLOWNER);
|
|
if (local)
|
|
newnfsstats.cllocalopenowners--;
|
|
else
|
|
newnfsstats.clopenowners--;
|
|
}
|
|
|
|
/*
|
|
* Free up a byte range lock owner structure.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_freelockowner(struct nfscllockowner *lp, int local)
|
|
{
|
|
struct nfscllock *lop, *nlop;
|
|
|
|
LIST_REMOVE(lp, nfsl_list);
|
|
LIST_FOREACH_SAFE(lop, &lp->nfsl_lock, nfslo_list, nlop) {
|
|
nfscl_freelock(lop, local);
|
|
}
|
|
FREE((caddr_t)lp, M_NFSCLLOCKOWNER);
|
|
if (local)
|
|
newnfsstats.cllocallockowners--;
|
|
else
|
|
newnfsstats.cllockowners--;
|
|
}
|
|
|
|
/*
|
|
* Free up a byte range lock structure.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_freelock(struct nfscllock *lop, int local)
|
|
{
|
|
|
|
LIST_REMOVE(lop, nfslo_list);
|
|
FREE((caddr_t)lop, M_NFSCLLOCK);
|
|
if (local)
|
|
newnfsstats.cllocallocks--;
|
|
else
|
|
newnfsstats.cllocks--;
|
|
}
|
|
|
|
/*
|
|
* Clean out the state related to a delegation.
|
|
*/
|
|
static void
|
|
nfscl_cleandeleg(struct nfscldeleg *dp)
|
|
{
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfsclopen *op;
|
|
|
|
LIST_FOREACH_SAFE(owp, &dp->nfsdl_owner, nfsow_list, nowp) {
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
if (op != NULL) {
|
|
if (LIST_NEXT(op, nfso_list) != NULL)
|
|
panic("nfscleandel");
|
|
nfscl_freeopen(op, 1);
|
|
}
|
|
nfscl_freeopenowner(owp, 1);
|
|
}
|
|
nfscl_freealllocks(&dp->nfsdl_lock, 1);
|
|
}
|
|
|
|
/*
|
|
* Free a delegation.
|
|
*/
|
|
static void
|
|
nfscl_freedeleg(struct nfscldeleghead *hdp, struct nfscldeleg *dp)
|
|
{
|
|
|
|
TAILQ_REMOVE(hdp, dp, nfsdl_list);
|
|
LIST_REMOVE(dp, nfsdl_hash);
|
|
FREE((caddr_t)dp, M_NFSCLDELEG);
|
|
newnfsstats.cldelegates--;
|
|
nfscl_delegcnt--;
|
|
}
|
|
|
|
/*
|
|
* Free up all state related to this client structure.
|
|
*/
|
|
static void
|
|
nfscl_cleanclient(struct nfsclclient *clp)
|
|
{
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfsclopen *op, *nop;
|
|
|
|
/* Now, all the OpenOwners, etc. */
|
|
LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
|
|
LIST_FOREACH_SAFE(op, &owp->nfsow_open, nfso_list, nop) {
|
|
nfscl_freeopen(op, 0);
|
|
}
|
|
nfscl_freeopenowner(owp, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Called when an NFSERR_EXPIRED is received from the server.
|
|
*/
|
|
static void
|
|
nfscl_expireclient(struct nfsclclient *clp, struct nfsmount *nmp,
|
|
struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfsclowner *owp, *nowp, *towp;
|
|
struct nfsclopen *op, *nop, *top;
|
|
struct nfscldeleg *dp, *ndp;
|
|
int ret, printed = 0;
|
|
|
|
/*
|
|
* First, merge locally issued Opens into the list for the server.
|
|
*/
|
|
dp = TAILQ_FIRST(&clp->nfsc_deleg);
|
|
while (dp != NULL) {
|
|
ndp = TAILQ_NEXT(dp, nfsdl_list);
|
|
owp = LIST_FIRST(&dp->nfsdl_owner);
|
|
while (owp != NULL) {
|
|
nowp = LIST_NEXT(owp, nfsow_list);
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
if (op != NULL) {
|
|
if (LIST_NEXT(op, nfso_list) != NULL)
|
|
panic("nfsclexp");
|
|
LIST_FOREACH(towp, &clp->nfsc_owner, nfsow_list) {
|
|
if (!NFSBCMP(towp->nfsow_owner, owp->nfsow_owner,
|
|
NFSV4CL_LOCKNAMELEN))
|
|
break;
|
|
}
|
|
if (towp != NULL) {
|
|
/* Merge opens in */
|
|
LIST_FOREACH(top, &towp->nfsow_open, nfso_list) {
|
|
if (top->nfso_fhlen == op->nfso_fhlen &&
|
|
!NFSBCMP(top->nfso_fh, op->nfso_fh,
|
|
op->nfso_fhlen)) {
|
|
top->nfso_mode |= op->nfso_mode;
|
|
top->nfso_opencnt += op->nfso_opencnt;
|
|
break;
|
|
}
|
|
}
|
|
if (top == NULL) {
|
|
/* Just add the open to the owner list */
|
|
LIST_REMOVE(op, nfso_list);
|
|
op->nfso_own = towp;
|
|
LIST_INSERT_HEAD(&towp->nfsow_open, op, nfso_list);
|
|
newnfsstats.cllocalopens--;
|
|
newnfsstats.clopens++;
|
|
}
|
|
} else {
|
|
/* Just add the openowner to the client list */
|
|
LIST_REMOVE(owp, nfsow_list);
|
|
owp->nfsow_clp = clp;
|
|
LIST_INSERT_HEAD(&clp->nfsc_owner, owp, nfsow_list);
|
|
newnfsstats.cllocalopenowners--;
|
|
newnfsstats.clopenowners++;
|
|
newnfsstats.cllocalopens--;
|
|
newnfsstats.clopens++;
|
|
}
|
|
}
|
|
owp = nowp;
|
|
}
|
|
if (!printed && !LIST_EMPTY(&dp->nfsdl_lock)) {
|
|
printed = 1;
|
|
printf("nfsv4 expired locks lost\n");
|
|
}
|
|
nfscl_cleandeleg(dp);
|
|
nfscl_freedeleg(&clp->nfsc_deleg, dp);
|
|
dp = ndp;
|
|
}
|
|
if (!TAILQ_EMPTY(&clp->nfsc_deleg))
|
|
panic("nfsclexp");
|
|
|
|
/*
|
|
* Now, try and reopen against the server.
|
|
*/
|
|
LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
|
|
owp->nfsow_seqid = 0;
|
|
LIST_FOREACH_SAFE(op, &owp->nfsow_open, nfso_list, nop) {
|
|
ret = nfscl_expireopen(clp, op, nmp, cred, p);
|
|
if (ret && !printed) {
|
|
printed = 1;
|
|
printf("nfsv4 expired locks lost\n");
|
|
}
|
|
}
|
|
if (LIST_EMPTY(&owp->nfsow_open))
|
|
nfscl_freeopenowner(owp, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This function must be called after the process represented by "own" has
|
|
* exited. Must be called with CLSTATE lock held.
|
|
*/
|
|
static void
|
|
nfscl_cleanup_common(struct nfsclclient *clp, u_int8_t *own)
|
|
{
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfscllockowner *lp, *nlp;
|
|
struct nfscldeleg *dp;
|
|
|
|
/* First, get rid of local locks on delegations. */
|
|
TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
|
|
LIST_FOREACH_SAFE(lp, &dp->nfsdl_lock, nfsl_list, nlp) {
|
|
if (!NFSBCMP(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN)) {
|
|
if ((lp->nfsl_rwlock.nfslock_lock & NFSV4LOCK_WANTED))
|
|
panic("nfscllckw");
|
|
nfscl_freelockowner(lp, 1);
|
|
}
|
|
}
|
|
}
|
|
owp = LIST_FIRST(&clp->nfsc_owner);
|
|
while (owp != NULL) {
|
|
nowp = LIST_NEXT(owp, nfsow_list);
|
|
if (!NFSBCMP(owp->nfsow_owner, own,
|
|
NFSV4CL_LOCKNAMELEN)) {
|
|
/*
|
|
* If there are children that haven't closed the
|
|
* file descriptors yet, the opens will still be
|
|
* here. For that case, let the renew thread clear
|
|
* out the OpenOwner later.
|
|
*/
|
|
if (LIST_EMPTY(&owp->nfsow_open))
|
|
nfscl_freeopenowner(owp, 0);
|
|
else
|
|
owp->nfsow_defunct = 1;
|
|
}
|
|
owp = nowp;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Find open/lock owners for processes that have exited.
|
|
*/
|
|
static void
|
|
nfscl_cleanupkext(struct nfsclclient *clp, struct nfscllockownerfhhead *lhp)
|
|
{
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfsclopen *op;
|
|
struct nfscllockowner *lp, *nlp;
|
|
|
|
NFSPROCLISTLOCK();
|
|
NFSLOCKCLSTATE();
|
|
LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
LIST_FOREACH_SAFE(lp, &op->nfso_lock, nfsl_list, nlp) {
|
|
if (LIST_EMPTY(&lp->nfsl_lock))
|
|
nfscl_emptylockowner(lp, lhp);
|
|
}
|
|
}
|
|
if (nfscl_procdoesntexist(owp->nfsow_owner))
|
|
nfscl_cleanup_common(clp, owp->nfsow_owner);
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
NFSPROCLISTUNLOCK();
|
|
}
|
|
|
|
/*
|
|
* Take the empty lock owner and move it to the local lhp list if the
|
|
* associated process no longer exists.
|
|
*/
|
|
static void
|
|
nfscl_emptylockowner(struct nfscllockowner *lp,
|
|
struct nfscllockownerfhhead *lhp)
|
|
{
|
|
struct nfscllockownerfh *lfhp, *mylfhp;
|
|
struct nfscllockowner *nlp;
|
|
int fnd_it;
|
|
|
|
/* If not a Posix lock owner, just return. */
|
|
if ((lp->nfsl_lockflags & F_POSIX) == 0)
|
|
return;
|
|
|
|
fnd_it = 0;
|
|
mylfhp = NULL;
|
|
/*
|
|
* First, search to see if this lock owner is already in the list.
|
|
* If it is, then the associated process no longer exists.
|
|
*/
|
|
SLIST_FOREACH(lfhp, lhp, nfslfh_list) {
|
|
if (lfhp->nfslfh_len == lp->nfsl_open->nfso_fhlen &&
|
|
!NFSBCMP(lfhp->nfslfh_fh, lp->nfsl_open->nfso_fh,
|
|
lfhp->nfslfh_len))
|
|
mylfhp = lfhp;
|
|
LIST_FOREACH(nlp, &lfhp->nfslfh_lock, nfsl_list)
|
|
if (!NFSBCMP(nlp->nfsl_owner, lp->nfsl_owner,
|
|
NFSV4CL_LOCKNAMELEN))
|
|
fnd_it = 1;
|
|
}
|
|
/* If not found, check if process still exists. */
|
|
if (fnd_it == 0 && nfscl_procdoesntexist(lp->nfsl_owner) == 0)
|
|
return;
|
|
|
|
/* Move the lock owner over to the local list. */
|
|
if (mylfhp == NULL) {
|
|
mylfhp = malloc(sizeof(struct nfscllockownerfh), M_TEMP,
|
|
M_NOWAIT);
|
|
if (mylfhp == NULL)
|
|
return;
|
|
mylfhp->nfslfh_len = lp->nfsl_open->nfso_fhlen;
|
|
NFSBCOPY(lp->nfsl_open->nfso_fh, mylfhp->nfslfh_fh,
|
|
mylfhp->nfslfh_len);
|
|
LIST_INIT(&mylfhp->nfslfh_lock);
|
|
SLIST_INSERT_HEAD(lhp, mylfhp, nfslfh_list);
|
|
}
|
|
LIST_REMOVE(lp, nfsl_list);
|
|
LIST_INSERT_HEAD(&mylfhp->nfslfh_lock, lp, nfsl_list);
|
|
}
|
|
|
|
static int fake_global; /* Used to force visibility of MNTK_UNMOUNTF */
|
|
/*
|
|
* Called from nfs umount to free up the clientid.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_umount(struct nfsmount *nmp, NFSPROC_T *p)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct ucred *cred;
|
|
int igotlock;
|
|
|
|
/*
|
|
* For the case that matters, this is the thread that set
|
|
* MNTK_UNMOUNTF, so it will see it set. The code that follows is
|
|
* done to ensure that any thread executing nfscl_getcl() after
|
|
* this time, will see MNTK_UNMOUNTF set. nfscl_getcl() uses the
|
|
* mutex for NFSLOCKCLSTATE(), so it is "m" for the following
|
|
* explanation, courtesy of Alan Cox.
|
|
* What follows is a snippet from Alan Cox's email at:
|
|
* http://docs.FreeBSD.org/cgi/
|
|
* mid.cgi?BANLkTikR3d65zPHo9==08ZfJ2vmqZucEvw
|
|
*
|
|
* 1. Set MNTK_UNMOUNTF
|
|
* 2. Acquire a standard FreeBSD mutex "m".
|
|
* 3. Update some data structures.
|
|
* 4. Release mutex "m".
|
|
*
|
|
* Then, other threads that acquire "m" after step 4 has occurred will
|
|
* see MNTK_UNMOUNTF as set. But, other threads that beat thread X to
|
|
* step 2 may or may not see MNTK_UNMOUNTF as set.
|
|
*/
|
|
NFSLOCKCLSTATE();
|
|
if ((nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
|
|
fake_global++;
|
|
NFSUNLOCKCLSTATE();
|
|
NFSLOCKCLSTATE();
|
|
}
|
|
|
|
clp = nmp->nm_clp;
|
|
if (clp != NULL) {
|
|
if ((clp->nfsc_flags & NFSCLFLAGS_INITED) == 0)
|
|
panic("nfscl umount");
|
|
|
|
/*
|
|
* First, handshake with the nfscl renew thread, to terminate
|
|
* it.
|
|
*/
|
|
clp->nfsc_flags |= NFSCLFLAGS_UMOUNT;
|
|
while (clp->nfsc_flags & NFSCLFLAGS_HASTHREAD)
|
|
(void)mtx_sleep(clp, NFSCLSTATEMUTEXPTR, PWAIT,
|
|
"nfsclumnt", hz);
|
|
|
|
/*
|
|
* Now, get the exclusive lock on the client state, so
|
|
* that no uses of the state are still in progress.
|
|
*/
|
|
do {
|
|
igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
|
|
NFSCLSTATEMUTEXPTR, NULL);
|
|
} while (!igotlock);
|
|
NFSUNLOCKCLSTATE();
|
|
|
|
/*
|
|
* Free up all the state. It will expire on the server, but
|
|
* maybe we should do a SetClientId/SetClientIdConfirm so
|
|
* the server throws it away?
|
|
*/
|
|
LIST_REMOVE(clp, nfsc_list);
|
|
nfscl_delegreturnall(clp, p);
|
|
cred = newnfs_getcred();
|
|
if (NFSHASNFSV4N(nmp)) {
|
|
(void)nfsrpc_destroysession(nmp, clp, cred, p);
|
|
(void)nfsrpc_destroyclient(nmp, clp, cred, p);
|
|
} else
|
|
(void)nfsrpc_setclient(nmp, clp, 0, cred, p);
|
|
nfscl_cleanclient(clp);
|
|
nmp->nm_clp = NULL;
|
|
NFSFREECRED(cred);
|
|
free(clp, M_NFSCLCLIENT);
|
|
} else
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* This function is called when a server replies with NFSERR_STALECLIENTID
|
|
* NFSERR_STALESTATEID or NFSERR_BADSESSION. It traverses the clientid lists,
|
|
* doing Opens and Locks with reclaim. If these fail, it deletes the
|
|
* corresponding state.
|
|
*/
|
|
static void
|
|
nfscl_recover(struct nfsclclient *clp, struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfsclopen *op, *nop;
|
|
struct nfscllockowner *lp, *nlp;
|
|
struct nfscllock *lop, *nlop;
|
|
struct nfscldeleg *dp, *ndp, *tdp;
|
|
struct nfsmount *nmp;
|
|
struct ucred *tcred;
|
|
struct nfsclopenhead extra_open;
|
|
struct nfscldeleghead extra_deleg;
|
|
struct nfsreq *rep;
|
|
u_int64_t len;
|
|
u_int32_t delegtype = NFSV4OPEN_DELEGATEWRITE, mode;
|
|
int i, igotlock = 0, error, trycnt, firstlock;
|
|
struct nfscllayout *lyp, *nlyp;
|
|
|
|
/*
|
|
* First, lock the client structure, so everyone else will
|
|
* block when trying to use state.
|
|
*/
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags |= NFSCLFLAGS_RECVRINPROG;
|
|
do {
|
|
igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
|
|
NFSCLSTATEMUTEXPTR, NULL);
|
|
} while (!igotlock);
|
|
NFSUNLOCKCLSTATE();
|
|
|
|
nmp = clp->nfsc_nmp;
|
|
if (nmp == NULL)
|
|
panic("nfscl recover");
|
|
|
|
/*
|
|
* For now, just get rid of all layouts. There may be a need
|
|
* to do LayoutCommit Ops with reclaim == true later.
|
|
*/
|
|
TAILQ_FOREACH_SAFE(lyp, &clp->nfsc_layout, nfsly_list, nlyp)
|
|
nfscl_freelayout(lyp);
|
|
TAILQ_INIT(&clp->nfsc_layout);
|
|
for (i = 0; i < NFSCLLAYOUTHASHSIZE; i++)
|
|
LIST_INIT(&clp->nfsc_layouthash[i]);
|
|
|
|
trycnt = 5;
|
|
do {
|
|
error = nfsrpc_setclient(nmp, clp, 1, cred, p);
|
|
} while ((error == NFSERR_STALECLIENTID ||
|
|
error == NFSERR_BADSESSION ||
|
|
error == NFSERR_STALEDONTRECOVER) && --trycnt > 0);
|
|
if (error) {
|
|
nfscl_cleanclient(clp);
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags &= ~(NFSCLFLAGS_HASCLIENTID |
|
|
NFSCLFLAGS_RECOVER | NFSCLFLAGS_RECVRINPROG);
|
|
wakeup(&clp->nfsc_flags);
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
return;
|
|
}
|
|
clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID;
|
|
clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER;
|
|
|
|
/*
|
|
* Mark requests already queued on the server, so that they don't
|
|
* initiate another recovery cycle. Any requests already in the
|
|
* queue that handle state information will have the old stale
|
|
* clientid/stateid and will get a NFSERR_STALESTATEID,
|
|
* NFSERR_STALECLIENTID or NFSERR_BADSESSION reply from the server.
|
|
* This will be translated to NFSERR_STALEDONTRECOVER when
|
|
* R_DONTRECOVER is set.
|
|
*/
|
|
NFSLOCKREQ();
|
|
TAILQ_FOREACH(rep, &nfsd_reqq, r_chain) {
|
|
if (rep->r_nmp == nmp)
|
|
rep->r_flags |= R_DONTRECOVER;
|
|
}
|
|
NFSUNLOCKREQ();
|
|
|
|
/*
|
|
* Now, mark all delegations "need reclaim".
|
|
*/
|
|
TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list)
|
|
dp->nfsdl_flags |= NFSCLDL_NEEDRECLAIM;
|
|
|
|
TAILQ_INIT(&extra_deleg);
|
|
LIST_INIT(&extra_open);
|
|
/*
|
|
* Now traverse the state lists, doing Open and Lock Reclaims.
|
|
*/
|
|
tcred = newnfs_getcred();
|
|
owp = LIST_FIRST(&clp->nfsc_owner);
|
|
while (owp != NULL) {
|
|
nowp = LIST_NEXT(owp, nfsow_list);
|
|
owp->nfsow_seqid = 0;
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
while (op != NULL) {
|
|
nop = LIST_NEXT(op, nfso_list);
|
|
if (error != NFSERR_NOGRACE) {
|
|
/* Search for a delegation to reclaim with the open */
|
|
TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
|
|
if (!(dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM))
|
|
continue;
|
|
if ((dp->nfsdl_flags & NFSCLDL_WRITE)) {
|
|
mode = NFSV4OPEN_ACCESSWRITE;
|
|
delegtype = NFSV4OPEN_DELEGATEWRITE;
|
|
} else {
|
|
mode = NFSV4OPEN_ACCESSREAD;
|
|
delegtype = NFSV4OPEN_DELEGATEREAD;
|
|
}
|
|
if ((op->nfso_mode & mode) == mode &&
|
|
op->nfso_fhlen == dp->nfsdl_fhlen &&
|
|
!NFSBCMP(op->nfso_fh, dp->nfsdl_fh, op->nfso_fhlen))
|
|
break;
|
|
}
|
|
ndp = dp;
|
|
if (dp == NULL)
|
|
delegtype = NFSV4OPEN_DELEGATENONE;
|
|
newnfs_copycred(&op->nfso_cred, tcred);
|
|
error = nfscl_tryopen(nmp, NULL, op->nfso_fh,
|
|
op->nfso_fhlen, op->nfso_fh, op->nfso_fhlen,
|
|
op->nfso_mode, op, NULL, 0, &ndp, 1, delegtype,
|
|
tcred, p);
|
|
if (!error) {
|
|
/* Handle any replied delegation */
|
|
if (ndp != NULL && ((ndp->nfsdl_flags & NFSCLDL_WRITE)
|
|
|| NFSMNT_RDONLY(nmp->nm_mountp))) {
|
|
if ((ndp->nfsdl_flags & NFSCLDL_WRITE))
|
|
mode = NFSV4OPEN_ACCESSWRITE;
|
|
else
|
|
mode = NFSV4OPEN_ACCESSREAD;
|
|
TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
|
|
if (!(dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM))
|
|
continue;
|
|
if ((op->nfso_mode & mode) == mode &&
|
|
op->nfso_fhlen == dp->nfsdl_fhlen &&
|
|
!NFSBCMP(op->nfso_fh, dp->nfsdl_fh,
|
|
op->nfso_fhlen)) {
|
|
dp->nfsdl_stateid = ndp->nfsdl_stateid;
|
|
dp->nfsdl_sizelimit = ndp->nfsdl_sizelimit;
|
|
dp->nfsdl_ace = ndp->nfsdl_ace;
|
|
dp->nfsdl_change = ndp->nfsdl_change;
|
|
dp->nfsdl_flags &= ~NFSCLDL_NEEDRECLAIM;
|
|
if ((ndp->nfsdl_flags & NFSCLDL_RECALL))
|
|
dp->nfsdl_flags |= NFSCLDL_RECALL;
|
|
FREE((caddr_t)ndp, M_NFSCLDELEG);
|
|
ndp = NULL;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (ndp != NULL)
|
|
TAILQ_INSERT_HEAD(&extra_deleg, ndp, nfsdl_list);
|
|
|
|
/* and reclaim all byte range locks */
|
|
lp = LIST_FIRST(&op->nfso_lock);
|
|
while (lp != NULL) {
|
|
nlp = LIST_NEXT(lp, nfsl_list);
|
|
lp->nfsl_seqid = 0;
|
|
firstlock = 1;
|
|
lop = LIST_FIRST(&lp->nfsl_lock);
|
|
while (lop != NULL) {
|
|
nlop = LIST_NEXT(lop, nfslo_list);
|
|
if (lop->nfslo_end == NFS64BITSSET)
|
|
len = NFS64BITSSET;
|
|
else
|
|
len = lop->nfslo_end - lop->nfslo_first;
|
|
if (error != NFSERR_NOGRACE)
|
|
error = nfscl_trylock(nmp, NULL,
|
|
op->nfso_fh, op->nfso_fhlen, lp,
|
|
firstlock, 1, lop->nfslo_first, len,
|
|
lop->nfslo_type, tcred, p);
|
|
if (error != 0)
|
|
nfscl_freelock(lop, 0);
|
|
else
|
|
firstlock = 0;
|
|
lop = nlop;
|
|
}
|
|
/* If no locks, but a lockowner, just delete it. */
|
|
if (LIST_EMPTY(&lp->nfsl_lock))
|
|
nfscl_freelockowner(lp, 0);
|
|
lp = nlp;
|
|
}
|
|
} else {
|
|
nfscl_freeopen(op, 0);
|
|
}
|
|
}
|
|
op = nop;
|
|
}
|
|
owp = nowp;
|
|
}
|
|
|
|
/*
|
|
* Now, try and get any delegations not yet reclaimed by cobbling
|
|
* to-gether an appropriate open.
|
|
*/
|
|
nowp = NULL;
|
|
dp = TAILQ_FIRST(&clp->nfsc_deleg);
|
|
while (dp != NULL) {
|
|
ndp = TAILQ_NEXT(dp, nfsdl_list);
|
|
if ((dp->nfsdl_flags & NFSCLDL_NEEDRECLAIM)) {
|
|
if (nowp == NULL) {
|
|
MALLOC(nowp, struct nfsclowner *,
|
|
sizeof (struct nfsclowner), M_NFSCLOWNER, M_WAITOK);
|
|
/*
|
|
* Name must be as long an largest possible
|
|
* NFSV4CL_LOCKNAMELEN. 12 for now.
|
|
*/
|
|
NFSBCOPY("RECLAIMDELEG", nowp->nfsow_owner,
|
|
NFSV4CL_LOCKNAMELEN);
|
|
LIST_INIT(&nowp->nfsow_open);
|
|
nowp->nfsow_clp = clp;
|
|
nowp->nfsow_seqid = 0;
|
|
nowp->nfsow_defunct = 0;
|
|
nfscl_lockinit(&nowp->nfsow_rwlock);
|
|
}
|
|
nop = NULL;
|
|
if (error != NFSERR_NOGRACE) {
|
|
MALLOC(nop, struct nfsclopen *, sizeof (struct nfsclopen) +
|
|
dp->nfsdl_fhlen - 1, M_NFSCLOPEN, M_WAITOK);
|
|
nop->nfso_own = nowp;
|
|
if ((dp->nfsdl_flags & NFSCLDL_WRITE)) {
|
|
nop->nfso_mode = NFSV4OPEN_ACCESSWRITE;
|
|
delegtype = NFSV4OPEN_DELEGATEWRITE;
|
|
} else {
|
|
nop->nfso_mode = NFSV4OPEN_ACCESSREAD;
|
|
delegtype = NFSV4OPEN_DELEGATEREAD;
|
|
}
|
|
nop->nfso_opencnt = 0;
|
|
nop->nfso_posixlock = 1;
|
|
nop->nfso_fhlen = dp->nfsdl_fhlen;
|
|
NFSBCOPY(dp->nfsdl_fh, nop->nfso_fh, dp->nfsdl_fhlen);
|
|
LIST_INIT(&nop->nfso_lock);
|
|
nop->nfso_stateid.seqid = 0;
|
|
nop->nfso_stateid.other[0] = 0;
|
|
nop->nfso_stateid.other[1] = 0;
|
|
nop->nfso_stateid.other[2] = 0;
|
|
newnfs_copycred(&dp->nfsdl_cred, tcred);
|
|
newnfs_copyincred(tcred, &nop->nfso_cred);
|
|
tdp = NULL;
|
|
error = nfscl_tryopen(nmp, NULL, nop->nfso_fh,
|
|
nop->nfso_fhlen, nop->nfso_fh, nop->nfso_fhlen,
|
|
nop->nfso_mode, nop, NULL, 0, &tdp, 1,
|
|
delegtype, tcred, p);
|
|
if (tdp != NULL) {
|
|
if ((tdp->nfsdl_flags & NFSCLDL_WRITE))
|
|
mode = NFSV4OPEN_ACCESSWRITE;
|
|
else
|
|
mode = NFSV4OPEN_ACCESSREAD;
|
|
if ((nop->nfso_mode & mode) == mode &&
|
|
nop->nfso_fhlen == tdp->nfsdl_fhlen &&
|
|
!NFSBCMP(nop->nfso_fh, tdp->nfsdl_fh,
|
|
nop->nfso_fhlen)) {
|
|
dp->nfsdl_stateid = tdp->nfsdl_stateid;
|
|
dp->nfsdl_sizelimit = tdp->nfsdl_sizelimit;
|
|
dp->nfsdl_ace = tdp->nfsdl_ace;
|
|
dp->nfsdl_change = tdp->nfsdl_change;
|
|
dp->nfsdl_flags &= ~NFSCLDL_NEEDRECLAIM;
|
|
if ((tdp->nfsdl_flags & NFSCLDL_RECALL))
|
|
dp->nfsdl_flags |= NFSCLDL_RECALL;
|
|
FREE((caddr_t)tdp, M_NFSCLDELEG);
|
|
} else {
|
|
TAILQ_INSERT_HEAD(&extra_deleg, tdp, nfsdl_list);
|
|
}
|
|
}
|
|
}
|
|
if (error) {
|
|
if (nop != NULL)
|
|
FREE((caddr_t)nop, M_NFSCLOPEN);
|
|
/*
|
|
* Couldn't reclaim it, so throw the state
|
|
* away. Ouch!!
|
|
*/
|
|
nfscl_cleandeleg(dp);
|
|
nfscl_freedeleg(&clp->nfsc_deleg, dp);
|
|
} else {
|
|
LIST_INSERT_HEAD(&extra_open, nop, nfso_list);
|
|
}
|
|
}
|
|
dp = ndp;
|
|
}
|
|
|
|
/*
|
|
* Now, get rid of extra Opens and Delegations.
|
|
*/
|
|
LIST_FOREACH_SAFE(op, &extra_open, nfso_list, nop) {
|
|
do {
|
|
newnfs_copycred(&op->nfso_cred, tcred);
|
|
error = nfscl_tryclose(op, tcred, nmp, p);
|
|
if (error == NFSERR_GRACE)
|
|
(void) nfs_catnap(PZERO, error, "nfsexcls");
|
|
} while (error == NFSERR_GRACE);
|
|
LIST_REMOVE(op, nfso_list);
|
|
FREE((caddr_t)op, M_NFSCLOPEN);
|
|
}
|
|
if (nowp != NULL)
|
|
FREE((caddr_t)nowp, M_NFSCLOWNER);
|
|
|
|
TAILQ_FOREACH_SAFE(dp, &extra_deleg, nfsdl_list, ndp) {
|
|
do {
|
|
newnfs_copycred(&dp->nfsdl_cred, tcred);
|
|
error = nfscl_trydelegreturn(dp, tcred, nmp, p);
|
|
if (error == NFSERR_GRACE)
|
|
(void) nfs_catnap(PZERO, error, "nfsexdlg");
|
|
} while (error == NFSERR_GRACE);
|
|
TAILQ_REMOVE(&extra_deleg, dp, nfsdl_list);
|
|
FREE((caddr_t)dp, M_NFSCLDELEG);
|
|
}
|
|
|
|
/* For NFSv4.1 or later, do a RECLAIM_COMPLETE. */
|
|
if (NFSHASNFSV4N(nmp))
|
|
(void)nfsrpc_reclaimcomplete(nmp, cred, p);
|
|
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags &= ~NFSCLFLAGS_RECVRINPROG;
|
|
wakeup(&clp->nfsc_flags);
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
NFSFREECRED(tcred);
|
|
}
|
|
|
|
/*
|
|
* This function is called when a server replies with NFSERR_EXPIRED.
|
|
* It deletes all state for the client and does a fresh SetClientId/confirm.
|
|
* XXX Someday it should post a signal to the process(es) that hold the
|
|
* state, so they know that lock state has been lost.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_hasexpired(struct nfsclclient *clp, u_int32_t clidrev, NFSPROC_T *p)
|
|
{
|
|
struct nfsmount *nmp;
|
|
struct ucred *cred;
|
|
int igotlock = 0, error, trycnt;
|
|
|
|
/*
|
|
* If the clientid has gone away or a new SetClientid has already
|
|
* been done, just return ok.
|
|
*/
|
|
if (clp == NULL || clidrev != clp->nfsc_clientidrev)
|
|
return (0);
|
|
|
|
/*
|
|
* First, lock the client structure, so everyone else will
|
|
* block when trying to use state. Also, use NFSCLFLAGS_EXPIREIT so
|
|
* that only one thread does the work.
|
|
*/
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags |= NFSCLFLAGS_EXPIREIT;
|
|
do {
|
|
igotlock = nfsv4_lock(&clp->nfsc_lock, 1, NULL,
|
|
NFSCLSTATEMUTEXPTR, NULL);
|
|
} while (!igotlock && (clp->nfsc_flags & NFSCLFLAGS_EXPIREIT));
|
|
if ((clp->nfsc_flags & NFSCLFLAGS_EXPIREIT) == 0) {
|
|
if (igotlock)
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
clp->nfsc_flags |= NFSCLFLAGS_RECVRINPROG;
|
|
NFSUNLOCKCLSTATE();
|
|
|
|
nmp = clp->nfsc_nmp;
|
|
if (nmp == NULL)
|
|
panic("nfscl expired");
|
|
cred = newnfs_getcred();
|
|
trycnt = 5;
|
|
do {
|
|
error = nfsrpc_setclient(nmp, clp, 0, cred, p);
|
|
} while ((error == NFSERR_STALECLIENTID ||
|
|
error == NFSERR_BADSESSION ||
|
|
error == NFSERR_STALEDONTRECOVER) && --trycnt > 0);
|
|
if (error) {
|
|
/*
|
|
* Clear out any state.
|
|
*/
|
|
nfscl_cleanclient(clp);
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags &= ~(NFSCLFLAGS_HASCLIENTID |
|
|
NFSCLFLAGS_RECOVER);
|
|
} else {
|
|
/*
|
|
* Expire the state for the client.
|
|
*/
|
|
nfscl_expireclient(clp, nmp, cred, p);
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags |= NFSCLFLAGS_HASCLIENTID;
|
|
clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER;
|
|
}
|
|
clp->nfsc_flags &= ~(NFSCLFLAGS_EXPIREIT | NFSCLFLAGS_RECVRINPROG);
|
|
wakeup(&clp->nfsc_flags);
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
NFSFREECRED(cred);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* This function inserts a lock in the list after insert_lop.
|
|
*/
|
|
static void
|
|
nfscl_insertlock(struct nfscllockowner *lp, struct nfscllock *new_lop,
|
|
struct nfscllock *insert_lop, int local)
|
|
{
|
|
|
|
if ((struct nfscllockowner *)insert_lop == lp)
|
|
LIST_INSERT_HEAD(&lp->nfsl_lock, new_lop, nfslo_list);
|
|
else
|
|
LIST_INSERT_AFTER(insert_lop, new_lop, nfslo_list);
|
|
if (local)
|
|
newnfsstats.cllocallocks++;
|
|
else
|
|
newnfsstats.cllocks++;
|
|
}
|
|
|
|
/*
|
|
* This function updates the locking for a lock owner and given file. It
|
|
* maintains a list of lock ranges ordered on increasing file offset that
|
|
* are NFSCLLOCK_READ or NFSCLLOCK_WRITE and non-overlapping (aka POSIX style).
|
|
* It always adds new_lop to the list and sometimes uses the one pointed
|
|
* at by other_lopp.
|
|
* Returns 1 if the locks were modified, 0 otherwise.
|
|
*/
|
|
static int
|
|
nfscl_updatelock(struct nfscllockowner *lp, struct nfscllock **new_lopp,
|
|
struct nfscllock **other_lopp, int local)
|
|
{
|
|
struct nfscllock *new_lop = *new_lopp;
|
|
struct nfscllock *lop, *tlop, *ilop;
|
|
struct nfscllock *other_lop;
|
|
int unlock = 0, modified = 0;
|
|
u_int64_t tmp;
|
|
|
|
/*
|
|
* Work down the list until the lock is merged.
|
|
*/
|
|
if (new_lop->nfslo_type == F_UNLCK)
|
|
unlock = 1;
|
|
ilop = (struct nfscllock *)lp;
|
|
lop = LIST_FIRST(&lp->nfsl_lock);
|
|
while (lop != NULL) {
|
|
/*
|
|
* Only check locks for this file that aren't before the start of
|
|
* new lock's range.
|
|
*/
|
|
if (lop->nfslo_end >= new_lop->nfslo_first) {
|
|
if (new_lop->nfslo_end < lop->nfslo_first) {
|
|
/*
|
|
* If the new lock ends before the start of the
|
|
* current lock's range, no merge, just insert
|
|
* the new lock.
|
|
*/
|
|
break;
|
|
}
|
|
if (new_lop->nfslo_type == lop->nfslo_type ||
|
|
(new_lop->nfslo_first <= lop->nfslo_first &&
|
|
new_lop->nfslo_end >= lop->nfslo_end)) {
|
|
/*
|
|
* This lock can be absorbed by the new lock/unlock.
|
|
* This happens when it covers the entire range
|
|
* of the old lock or is contiguous
|
|
* with the old lock and is of the same type or an
|
|
* unlock.
|
|
*/
|
|
if (new_lop->nfslo_type != lop->nfslo_type ||
|
|
new_lop->nfslo_first != lop->nfslo_first ||
|
|
new_lop->nfslo_end != lop->nfslo_end)
|
|
modified = 1;
|
|
if (lop->nfslo_first < new_lop->nfslo_first)
|
|
new_lop->nfslo_first = lop->nfslo_first;
|
|
if (lop->nfslo_end > new_lop->nfslo_end)
|
|
new_lop->nfslo_end = lop->nfslo_end;
|
|
tlop = lop;
|
|
lop = LIST_NEXT(lop, nfslo_list);
|
|
nfscl_freelock(tlop, local);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* All these cases are for contiguous locks that are not the
|
|
* same type, so they can't be merged.
|
|
*/
|
|
if (new_lop->nfslo_first <= lop->nfslo_first) {
|
|
/*
|
|
* This case is where the new lock overlaps with the
|
|
* first part of the old lock. Move the start of the
|
|
* old lock to just past the end of the new lock. The
|
|
* new lock will be inserted in front of the old, since
|
|
* ilop hasn't been updated. (We are done now.)
|
|
*/
|
|
if (lop->nfslo_first != new_lop->nfslo_end) {
|
|
lop->nfslo_first = new_lop->nfslo_end;
|
|
modified = 1;
|
|
}
|
|
break;
|
|
}
|
|
if (new_lop->nfslo_end >= lop->nfslo_end) {
|
|
/*
|
|
* This case is where the new lock overlaps with the
|
|
* end of the old lock's range. Move the old lock's
|
|
* end to just before the new lock's first and insert
|
|
* the new lock after the old lock.
|
|
* Might not be done yet, since the new lock could
|
|
* overlap further locks with higher ranges.
|
|
*/
|
|
if (lop->nfslo_end != new_lop->nfslo_first) {
|
|
lop->nfslo_end = new_lop->nfslo_first;
|
|
modified = 1;
|
|
}
|
|
ilop = lop;
|
|
lop = LIST_NEXT(lop, nfslo_list);
|
|
continue;
|
|
}
|
|
/*
|
|
* The final case is where the new lock's range is in the
|
|
* middle of the current lock's and splits the current lock
|
|
* up. Use *other_lopp to handle the second part of the
|
|
* split old lock range. (We are done now.)
|
|
* For unlock, we use new_lop as other_lop and tmp, since
|
|
* other_lop and new_lop are the same for this case.
|
|
* We noted the unlock case above, so we don't need
|
|
* new_lop->nfslo_type any longer.
|
|
*/
|
|
tmp = new_lop->nfslo_first;
|
|
if (unlock) {
|
|
other_lop = new_lop;
|
|
*new_lopp = NULL;
|
|
} else {
|
|
other_lop = *other_lopp;
|
|
*other_lopp = NULL;
|
|
}
|
|
other_lop->nfslo_first = new_lop->nfslo_end;
|
|
other_lop->nfslo_end = lop->nfslo_end;
|
|
other_lop->nfslo_type = lop->nfslo_type;
|
|
lop->nfslo_end = tmp;
|
|
nfscl_insertlock(lp, other_lop, lop, local);
|
|
ilop = lop;
|
|
modified = 1;
|
|
break;
|
|
}
|
|
ilop = lop;
|
|
lop = LIST_NEXT(lop, nfslo_list);
|
|
if (lop == NULL)
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Insert the new lock in the list at the appropriate place.
|
|
*/
|
|
if (!unlock) {
|
|
nfscl_insertlock(lp, new_lop, ilop, local);
|
|
*new_lopp = NULL;
|
|
modified = 1;
|
|
}
|
|
return (modified);
|
|
}
|
|
|
|
/*
|
|
* This function must be run as a kernel thread.
|
|
* It does Renew Ops and recovery, when required.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_renewthread(struct nfsclclient *clp, NFSPROC_T *p)
|
|
{
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfsclopen *op;
|
|
struct nfscllockowner *lp, *nlp;
|
|
struct nfscldeleghead dh;
|
|
struct nfscldeleg *dp, *ndp;
|
|
struct ucred *cred;
|
|
u_int32_t clidrev;
|
|
int error, cbpathdown, islept, igotlock, ret, clearok;
|
|
uint32_t recover_done_time = 0;
|
|
time_t mytime;
|
|
static time_t prevsec = 0;
|
|
struct nfscllockownerfh *lfhp, *nlfhp;
|
|
struct nfscllockownerfhhead lfh;
|
|
struct nfscllayout *lyp, *nlyp;
|
|
struct nfscldevinfo *dip, *ndip;
|
|
struct nfscllayouthead rlh;
|
|
struct nfsclrecalllayout *recallp;
|
|
struct nfsclds *dsp;
|
|
|
|
cred = newnfs_getcred();
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags |= NFSCLFLAGS_HASTHREAD;
|
|
NFSUNLOCKCLSTATE();
|
|
for(;;) {
|
|
newnfs_setroot(cred);
|
|
cbpathdown = 0;
|
|
if (clp->nfsc_flags & NFSCLFLAGS_RECOVER) {
|
|
/*
|
|
* Only allow one recover within 1/2 of the lease
|
|
* duration (nfsc_renew).
|
|
*/
|
|
if (recover_done_time < NFSD_MONOSEC) {
|
|
recover_done_time = NFSD_MONOSEC +
|
|
clp->nfsc_renew;
|
|
nfscl_recover(clp, cred, p);
|
|
} else {
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags &= ~NFSCLFLAGS_RECOVER;
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
}
|
|
if (clp->nfsc_expire <= NFSD_MONOSEC &&
|
|
(clp->nfsc_flags & NFSCLFLAGS_HASCLIENTID)) {
|
|
clp->nfsc_expire = NFSD_MONOSEC + clp->nfsc_renew;
|
|
clidrev = clp->nfsc_clientidrev;
|
|
error = nfsrpc_renew(clp,
|
|
TAILQ_FIRST(&clp->nfsc_nmp->nm_sess), cred, p);
|
|
if (error == NFSERR_CBPATHDOWN)
|
|
cbpathdown = 1;
|
|
else if (error == NFSERR_STALECLIENTID ||
|
|
error == NFSERR_BADSESSION) {
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags |= NFSCLFLAGS_RECOVER;
|
|
NFSUNLOCKCLSTATE();
|
|
} else if (error == NFSERR_EXPIRED)
|
|
(void) nfscl_hasexpired(clp, clidrev, p);
|
|
}
|
|
|
|
/* Do renews for any DS sessions. */
|
|
checkdsrenew:
|
|
NFSLOCKMNT(clp->nfsc_nmp);
|
|
/* Skip first entry, since the MDS is handled above. */
|
|
dsp = TAILQ_FIRST(&clp->nfsc_nmp->nm_sess);
|
|
if (dsp != NULL)
|
|
dsp = TAILQ_NEXT(dsp, nfsclds_list);
|
|
while (dsp != NULL) {
|
|
if (dsp->nfsclds_expire <= NFSD_MONOSEC) {
|
|
dsp->nfsclds_expire = NFSD_MONOSEC +
|
|
clp->nfsc_renew;
|
|
NFSUNLOCKMNT(clp->nfsc_nmp);
|
|
(void)nfsrpc_renew(clp, dsp, cred, p);
|
|
goto checkdsrenew;
|
|
}
|
|
dsp = TAILQ_NEXT(dsp, nfsclds_list);
|
|
}
|
|
NFSUNLOCKMNT(clp->nfsc_nmp);
|
|
|
|
TAILQ_INIT(&dh);
|
|
NFSLOCKCLSTATE();
|
|
if (cbpathdown)
|
|
/* It's a Total Recall! */
|
|
nfscl_totalrecall(clp);
|
|
|
|
/*
|
|
* Now, handle defunct owners.
|
|
*/
|
|
LIST_FOREACH_SAFE(owp, &clp->nfsc_owner, nfsow_list, nowp) {
|
|
if (LIST_EMPTY(&owp->nfsow_open)) {
|
|
if (owp->nfsow_defunct != 0)
|
|
nfscl_freeopenowner(owp, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Do the recall on any delegations. To avoid trouble, always
|
|
* come back up here after having slept.
|
|
*/
|
|
igotlock = 0;
|
|
tryagain:
|
|
dp = TAILQ_FIRST(&clp->nfsc_deleg);
|
|
while (dp != NULL) {
|
|
ndp = TAILQ_NEXT(dp, nfsdl_list);
|
|
if ((dp->nfsdl_flags & NFSCLDL_RECALL)) {
|
|
/*
|
|
* Wait for outstanding I/O ops to be done.
|
|
*/
|
|
if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
|
|
if (igotlock) {
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
igotlock = 0;
|
|
}
|
|
dp->nfsdl_rwlock.nfslock_lock |=
|
|
NFSV4LOCK_WANTED;
|
|
(void) nfsmsleep(&dp->nfsdl_rwlock,
|
|
NFSCLSTATEMUTEXPTR, PZERO, "nfscld",
|
|
NULL);
|
|
goto tryagain;
|
|
}
|
|
while (!igotlock) {
|
|
igotlock = nfsv4_lock(&clp->nfsc_lock, 1,
|
|
&islept, NFSCLSTATEMUTEXPTR, NULL);
|
|
if (islept)
|
|
goto tryagain;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
newnfs_copycred(&dp->nfsdl_cred, cred);
|
|
ret = nfscl_recalldeleg(clp, clp->nfsc_nmp, dp,
|
|
NULL, cred, p, 1);
|
|
if (!ret) {
|
|
nfscl_cleandeleg(dp);
|
|
TAILQ_REMOVE(&clp->nfsc_deleg, dp,
|
|
nfsdl_list);
|
|
LIST_REMOVE(dp, nfsdl_hash);
|
|
TAILQ_INSERT_HEAD(&dh, dp, nfsdl_list);
|
|
nfscl_delegcnt--;
|
|
newnfsstats.cldelegates--;
|
|
}
|
|
NFSLOCKCLSTATE();
|
|
}
|
|
dp = ndp;
|
|
}
|
|
|
|
/*
|
|
* Clear out old delegations, if we are above the high water
|
|
* mark. Only clear out ones with no state related to them.
|
|
* The tailq list is in LRU order.
|
|
*/
|
|
dp = TAILQ_LAST(&clp->nfsc_deleg, nfscldeleghead);
|
|
while (nfscl_delegcnt > nfscl_deleghighwater && dp != NULL) {
|
|
ndp = TAILQ_PREV(dp, nfscldeleghead, nfsdl_list);
|
|
if (dp->nfsdl_rwlock.nfslock_usecnt == 0 &&
|
|
dp->nfsdl_rwlock.nfslock_lock == 0 &&
|
|
dp->nfsdl_timestamp < NFSD_MONOSEC &&
|
|
(dp->nfsdl_flags & (NFSCLDL_RECALL | NFSCLDL_ZAPPED |
|
|
NFSCLDL_NEEDRECLAIM | NFSCLDL_DELEGRET)) == 0) {
|
|
clearok = 1;
|
|
LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
if (op != NULL) {
|
|
clearok = 0;
|
|
break;
|
|
}
|
|
}
|
|
if (clearok) {
|
|
LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
|
|
if (!LIST_EMPTY(&lp->nfsl_lock)) {
|
|
clearok = 0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (clearok) {
|
|
TAILQ_REMOVE(&clp->nfsc_deleg, dp, nfsdl_list);
|
|
LIST_REMOVE(dp, nfsdl_hash);
|
|
TAILQ_INSERT_HEAD(&dh, dp, nfsdl_list);
|
|
nfscl_delegcnt--;
|
|
newnfsstats.cldelegates--;
|
|
}
|
|
}
|
|
dp = ndp;
|
|
}
|
|
if (igotlock)
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
|
|
/*
|
|
* Do the recall on any layouts. To avoid trouble, always
|
|
* come back up here after having slept.
|
|
*/
|
|
TAILQ_INIT(&rlh);
|
|
tryagain2:
|
|
TAILQ_FOREACH_SAFE(lyp, &clp->nfsc_layout, nfsly_list, nlyp) {
|
|
if ((lyp->nfsly_flags & NFSLY_RECALL) != 0) {
|
|
/*
|
|
* Wait for outstanding I/O ops to be done.
|
|
*/
|
|
if (lyp->nfsly_lock.nfslock_usecnt > 0 ||
|
|
(lyp->nfsly_lock.nfslock_lock &
|
|
NFSV4LOCK_LOCK) != 0) {
|
|
lyp->nfsly_lock.nfslock_lock |=
|
|
NFSV4LOCK_WANTED;
|
|
(void)nfsmsleep(&lyp->nfsly_lock,
|
|
NFSCLSTATEMUTEXPTR, PZERO, "nfslyp",
|
|
NULL);
|
|
goto tryagain2;
|
|
}
|
|
/* Move the layout to the recall list. */
|
|
TAILQ_REMOVE(&clp->nfsc_layout, lyp,
|
|
nfsly_list);
|
|
LIST_REMOVE(lyp, nfsly_hash);
|
|
TAILQ_INSERT_HEAD(&rlh, lyp, nfsly_list);
|
|
|
|
/* Handle any layout commits. */
|
|
if (!NFSHASNOLAYOUTCOMMIT(clp->nfsc_nmp) &&
|
|
(lyp->nfsly_flags & NFSLY_WRITTEN) != 0) {
|
|
lyp->nfsly_flags &= ~NFSLY_WRITTEN;
|
|
NFSUNLOCKCLSTATE();
|
|
NFSCL_DEBUG(3, "do layoutcommit\n");
|
|
nfscl_dolayoutcommit(clp->nfsc_nmp, lyp,
|
|
cred, p);
|
|
NFSLOCKCLSTATE();
|
|
goto tryagain2;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Now, look for stale layouts. */
|
|
lyp = TAILQ_LAST(&clp->nfsc_layout, nfscllayouthead);
|
|
while (lyp != NULL) {
|
|
nlyp = TAILQ_PREV(lyp, nfscllayouthead, nfsly_list);
|
|
if (lyp->nfsly_timestamp < NFSD_MONOSEC &&
|
|
(lyp->nfsly_flags & NFSLY_RECALL) == 0 &&
|
|
lyp->nfsly_lock.nfslock_usecnt == 0 &&
|
|
lyp->nfsly_lock.nfslock_lock == 0) {
|
|
NFSCL_DEBUG(4, "ret stale lay=%d\n",
|
|
nfscl_layoutcnt);
|
|
recallp = malloc(sizeof(*recallp),
|
|
M_NFSLAYRECALL, M_NOWAIT);
|
|
if (recallp == NULL)
|
|
break;
|
|
(void)nfscl_layoutrecall(NFSLAYOUTRETURN_FILE,
|
|
lyp, NFSLAYOUTIOMODE_ANY, 0, UINT64_MAX,
|
|
lyp->nfsly_stateid.seqid, recallp);
|
|
}
|
|
lyp = nlyp;
|
|
}
|
|
|
|
/*
|
|
* Free up any unreferenced device info structures.
|
|
*/
|
|
LIST_FOREACH_SAFE(dip, &clp->nfsc_devinfo, nfsdi_list, ndip) {
|
|
if (dip->nfsdi_layoutrefs == 0 &&
|
|
dip->nfsdi_refcnt == 0) {
|
|
NFSCL_DEBUG(4, "freeing devinfo\n");
|
|
LIST_REMOVE(dip, nfsdi_list);
|
|
nfscl_freedevinfo(dip);
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
|
|
/* Do layout return(s), as required. */
|
|
TAILQ_FOREACH_SAFE(lyp, &rlh, nfsly_list, nlyp) {
|
|
TAILQ_REMOVE(&rlh, lyp, nfsly_list);
|
|
NFSCL_DEBUG(4, "ret layout\n");
|
|
nfscl_layoutreturn(clp->nfsc_nmp, lyp, cred, p);
|
|
nfscl_freelayout(lyp);
|
|
}
|
|
|
|
/*
|
|
* Delegreturn any delegations cleaned out or recalled.
|
|
*/
|
|
TAILQ_FOREACH_SAFE(dp, &dh, nfsdl_list, ndp) {
|
|
newnfs_copycred(&dp->nfsdl_cred, cred);
|
|
(void) nfscl_trydelegreturn(dp, cred, clp->nfsc_nmp, p);
|
|
TAILQ_REMOVE(&dh, dp, nfsdl_list);
|
|
FREE((caddr_t)dp, M_NFSCLDELEG);
|
|
}
|
|
|
|
SLIST_INIT(&lfh);
|
|
/*
|
|
* Call nfscl_cleanupkext() once per second to check for
|
|
* open/lock owners where the process has exited.
|
|
*/
|
|
mytime = NFSD_MONOSEC;
|
|
if (prevsec != mytime) {
|
|
prevsec = mytime;
|
|
nfscl_cleanupkext(clp, &lfh);
|
|
}
|
|
|
|
/*
|
|
* Do a ReleaseLockOwner for all lock owners where the
|
|
* associated process no longer exists, as found by
|
|
* nfscl_cleanupkext().
|
|
*/
|
|
newnfs_setroot(cred);
|
|
SLIST_FOREACH_SAFE(lfhp, &lfh, nfslfh_list, nlfhp) {
|
|
LIST_FOREACH_SAFE(lp, &lfhp->nfslfh_lock, nfsl_list,
|
|
nlp) {
|
|
(void)nfsrpc_rellockown(clp->nfsc_nmp, lp,
|
|
lfhp->nfslfh_fh, lfhp->nfslfh_len, cred,
|
|
p);
|
|
nfscl_freelockowner(lp, 0);
|
|
}
|
|
free(lfhp, M_TEMP);
|
|
}
|
|
SLIST_INIT(&lfh);
|
|
|
|
NFSLOCKCLSTATE();
|
|
if ((clp->nfsc_flags & NFSCLFLAGS_RECOVER) == 0)
|
|
(void)mtx_sleep(clp, NFSCLSTATEMUTEXPTR, PWAIT, "nfscl",
|
|
hz);
|
|
if (clp->nfsc_flags & NFSCLFLAGS_UMOUNT) {
|
|
clp->nfsc_flags &= ~NFSCLFLAGS_HASTHREAD;
|
|
NFSUNLOCKCLSTATE();
|
|
NFSFREECRED(cred);
|
|
wakeup((caddr_t)clp);
|
|
return;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Initiate state recovery. Called when NFSERR_STALECLIENTID,
|
|
* NFSERR_STALESTATEID or NFSERR_BADSESSION is received.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_initiate_recovery(struct nfsclclient *clp)
|
|
{
|
|
|
|
if (clp == NULL)
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
clp->nfsc_flags |= NFSCLFLAGS_RECOVER;
|
|
NFSUNLOCKCLSTATE();
|
|
wakeup((caddr_t)clp);
|
|
}
|
|
|
|
/*
|
|
* Dump out the state stuff for debugging.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_dumpstate(struct nfsmount *nmp, int openowner, int opens,
|
|
int lockowner, int locks)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclowner *owp;
|
|
struct nfsclopen *op;
|
|
struct nfscllockowner *lp;
|
|
struct nfscllock *lop;
|
|
struct nfscldeleg *dp;
|
|
|
|
clp = nmp->nm_clp;
|
|
if (clp == NULL) {
|
|
printf("nfscl dumpstate NULL clp\n");
|
|
return;
|
|
}
|
|
NFSLOCKCLSTATE();
|
|
TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
|
|
LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
|
|
if (openowner && !LIST_EMPTY(&owp->nfsow_open))
|
|
printf("owner=0x%x 0x%x 0x%x 0x%x seqid=%d\n",
|
|
owp->nfsow_owner[0], owp->nfsow_owner[1],
|
|
owp->nfsow_owner[2], owp->nfsow_owner[3],
|
|
owp->nfsow_seqid);
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (opens)
|
|
printf("open st=0x%x 0x%x 0x%x cnt=%d fh12=0x%x\n",
|
|
op->nfso_stateid.other[0], op->nfso_stateid.other[1],
|
|
op->nfso_stateid.other[2], op->nfso_opencnt,
|
|
op->nfso_fh[12]);
|
|
LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
|
|
if (lockowner)
|
|
printf("lckown=0x%x 0x%x 0x%x 0x%x seqid=%d st=0x%x 0x%x 0x%x\n",
|
|
lp->nfsl_owner[0], lp->nfsl_owner[1],
|
|
lp->nfsl_owner[2], lp->nfsl_owner[3],
|
|
lp->nfsl_seqid,
|
|
lp->nfsl_stateid.other[0], lp->nfsl_stateid.other[1],
|
|
lp->nfsl_stateid.other[2]);
|
|
LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
|
|
if (locks)
|
|
#ifdef __FreeBSD__
|
|
printf("lck typ=%d fst=%ju end=%ju\n",
|
|
lop->nfslo_type, (intmax_t)lop->nfslo_first,
|
|
(intmax_t)lop->nfslo_end);
|
|
#else
|
|
printf("lck typ=%d fst=%qd end=%qd\n",
|
|
lop->nfslo_type, lop->nfslo_first,
|
|
lop->nfslo_end);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
if (openowner && !LIST_EMPTY(&owp->nfsow_open))
|
|
printf("owner=0x%x 0x%x 0x%x 0x%x seqid=%d\n",
|
|
owp->nfsow_owner[0], owp->nfsow_owner[1],
|
|
owp->nfsow_owner[2], owp->nfsow_owner[3],
|
|
owp->nfsow_seqid);
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (opens)
|
|
printf("open st=0x%x 0x%x 0x%x cnt=%d fh12=0x%x\n",
|
|
op->nfso_stateid.other[0], op->nfso_stateid.other[1],
|
|
op->nfso_stateid.other[2], op->nfso_opencnt,
|
|
op->nfso_fh[12]);
|
|
LIST_FOREACH(lp, &op->nfso_lock, nfsl_list) {
|
|
if (lockowner)
|
|
printf("lckown=0x%x 0x%x 0x%x 0x%x seqid=%d st=0x%x 0x%x 0x%x\n",
|
|
lp->nfsl_owner[0], lp->nfsl_owner[1],
|
|
lp->nfsl_owner[2], lp->nfsl_owner[3],
|
|
lp->nfsl_seqid,
|
|
lp->nfsl_stateid.other[0], lp->nfsl_stateid.other[1],
|
|
lp->nfsl_stateid.other[2]);
|
|
LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
|
|
if (locks)
|
|
#ifdef __FreeBSD__
|
|
printf("lck typ=%d fst=%ju end=%ju\n",
|
|
lop->nfslo_type, (intmax_t)lop->nfslo_first,
|
|
(intmax_t)lop->nfslo_end);
|
|
#else
|
|
printf("lck typ=%d fst=%qd end=%qd\n",
|
|
lop->nfslo_type, lop->nfslo_first,
|
|
lop->nfslo_end);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Check for duplicate open owners and opens.
|
|
* (Only used as a diagnostic aid.)
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_dupopen(vnode_t vp, int dupopens)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclowner *owp, *owp2;
|
|
struct nfsclopen *op, *op2;
|
|
struct nfsfh *nfhp;
|
|
|
|
clp = VFSTONFS(vnode_mount(vp))->nm_clp;
|
|
if (clp == NULL) {
|
|
printf("nfscl dupopen NULL clp\n");
|
|
return;
|
|
}
|
|
nfhp = VTONFS(vp)->n_fhp;
|
|
NFSLOCKCLSTATE();
|
|
|
|
/*
|
|
* First, search for duplicate owners.
|
|
* These should never happen!
|
|
*/
|
|
LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
if (owp != owp2 &&
|
|
!NFSBCMP(owp->nfsow_owner, owp2->nfsow_owner,
|
|
NFSV4CL_LOCKNAMELEN)) {
|
|
NFSUNLOCKCLSTATE();
|
|
printf("DUP OWNER\n");
|
|
nfscl_dumpstate(VFSTONFS(vnode_mount(vp)), 1, 1, 0, 0);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now, search for duplicate stateids.
|
|
* These shouldn't happen, either.
|
|
*/
|
|
LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op2, &owp2->nfsow_open, nfso_list) {
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op != op2 &&
|
|
(op->nfso_stateid.other[0] != 0 ||
|
|
op->nfso_stateid.other[1] != 0 ||
|
|
op->nfso_stateid.other[2] != 0) &&
|
|
op->nfso_stateid.other[0] == op2->nfso_stateid.other[0] &&
|
|
op->nfso_stateid.other[1] == op2->nfso_stateid.other[1] &&
|
|
op->nfso_stateid.other[2] == op2->nfso_stateid.other[2]) {
|
|
NFSUNLOCKCLSTATE();
|
|
printf("DUP STATEID\n");
|
|
nfscl_dumpstate(VFSTONFS(vnode_mount(vp)), 1, 1, 0,
|
|
0);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now search for duplicate opens.
|
|
* Duplicate opens for the same owner
|
|
* should never occur. Other duplicates are
|
|
* possible and are checked for if "dupopens"
|
|
* is true.
|
|
*/
|
|
LIST_FOREACH(owp2, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op2, &owp2->nfsow_open, nfso_list) {
|
|
if (nfhp->nfh_len == op2->nfso_fhlen &&
|
|
!NFSBCMP(nfhp->nfh_fh, op2->nfso_fh, nfhp->nfh_len)) {
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op != op2 && nfhp->nfh_len == op->nfso_fhlen &&
|
|
!NFSBCMP(nfhp->nfh_fh, op->nfso_fh, nfhp->nfh_len) &&
|
|
(!NFSBCMP(op->nfso_own->nfsow_owner,
|
|
op2->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN) ||
|
|
dupopens)) {
|
|
if (!NFSBCMP(op->nfso_own->nfsow_owner,
|
|
op2->nfso_own->nfsow_owner, NFSV4CL_LOCKNAMELEN)) {
|
|
NFSUNLOCKCLSTATE();
|
|
printf("BADDUP OPEN\n");
|
|
} else {
|
|
NFSUNLOCKCLSTATE();
|
|
printf("DUP OPEN\n");
|
|
}
|
|
nfscl_dumpstate(VFSTONFS(vnode_mount(vp)), 1, 1,
|
|
0, 0);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* During close, find an open that needs to be dereferenced and
|
|
* dereference it. If there are no more opens for this file,
|
|
* log a message to that effect.
|
|
* Opens aren't actually Close'd until VOP_INACTIVE() is performed
|
|
* on the file's vnode.
|
|
* This is the safe way, since it is difficult to identify
|
|
* which open the close is for and I/O can be performed after the
|
|
* close(2) system call when a file is mmap'd.
|
|
* If it returns 0 for success, there will be a referenced
|
|
* clp returned via clpp.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_getclose(vnode_t vp, struct nfsclclient **clpp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclowner *owp;
|
|
struct nfsclopen *op;
|
|
struct nfscldeleg *dp;
|
|
struct nfsfh *nfhp;
|
|
int error, notdecr;
|
|
|
|
error = nfscl_getcl(vnode_mount(vp), NULL, NULL, 1, &clp);
|
|
if (error)
|
|
return (error);
|
|
*clpp = clp;
|
|
|
|
nfhp = VTONFS(vp)->n_fhp;
|
|
notdecr = 1;
|
|
NFSLOCKCLSTATE();
|
|
/*
|
|
* First, look for one under a delegation that was locally issued
|
|
* and just decrement the opencnt for it. Since all my Opens against
|
|
* the server are DENY_NONE, I don't see a problem with hanging
|
|
* onto them. (It is much easier to use one of the extant Opens
|
|
* that I already have on the server when a Delegation is recalled
|
|
* than to do fresh Opens.) Someday, I might need to rethink this, but.
|
|
*/
|
|
dp = nfscl_finddeleg(clp, nfhp->nfh_fh, nfhp->nfh_len);
|
|
if (dp != NULL) {
|
|
LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
if (op != NULL) {
|
|
/*
|
|
* Since a delegation is for a file, there
|
|
* should never be more than one open for
|
|
* each openowner.
|
|
*/
|
|
if (LIST_NEXT(op, nfso_list) != NULL)
|
|
panic("nfscdeleg opens");
|
|
if (notdecr && op->nfso_opencnt > 0) {
|
|
notdecr = 0;
|
|
op->nfso_opencnt--;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Now process the opens against the server. */
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op->nfso_fhlen == nfhp->nfh_len &&
|
|
!NFSBCMP(op->nfso_fh, nfhp->nfh_fh,
|
|
nfhp->nfh_len)) {
|
|
/* Found an open, decrement cnt if possible */
|
|
if (notdecr && op->nfso_opencnt > 0) {
|
|
notdecr = 0;
|
|
op->nfso_opencnt--;
|
|
}
|
|
/*
|
|
* There are more opens, so just return.
|
|
*/
|
|
if (op->nfso_opencnt > 0) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
if (notdecr)
|
|
printf("nfscl: never fnd open\n");
|
|
return (0);
|
|
}
|
|
|
|
APPLESTATIC int
|
|
nfscl_doclose(vnode_t vp, struct nfsclclient **clpp, NFSPROC_T *p)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfsclowner *owp, *nowp;
|
|
struct nfsclopen *op;
|
|
struct nfscldeleg *dp;
|
|
struct nfsfh *nfhp;
|
|
int error;
|
|
|
|
error = nfscl_getcl(vnode_mount(vp), NULL, NULL, 1, &clp);
|
|
if (error)
|
|
return (error);
|
|
*clpp = clp;
|
|
|
|
nfhp = VTONFS(vp)->n_fhp;
|
|
NFSLOCKCLSTATE();
|
|
/*
|
|
* First get rid of the local Open structures, which should be no
|
|
* longer in use.
|
|
*/
|
|
dp = nfscl_finddeleg(clp, nfhp->nfh_fh, nfhp->nfh_len);
|
|
if (dp != NULL) {
|
|
LIST_FOREACH_SAFE(owp, &dp->nfsdl_owner, nfsow_list, nowp) {
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
if (op != NULL) {
|
|
KASSERT((op->nfso_opencnt == 0),
|
|
("nfscl: bad open cnt on deleg"));
|
|
nfscl_freeopen(op, 1);
|
|
}
|
|
nfscl_freeopenowner(owp, 1);
|
|
}
|
|
}
|
|
|
|
/* Return any layouts marked return on close. */
|
|
nfscl_retoncloselayout(clp, nfhp->nfh_fh, nfhp->nfh_len);
|
|
|
|
/* Now process the opens against the server. */
|
|
lookformore:
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
op = LIST_FIRST(&owp->nfsow_open);
|
|
while (op != NULL) {
|
|
if (op->nfso_fhlen == nfhp->nfh_len &&
|
|
!NFSBCMP(op->nfso_fh, nfhp->nfh_fh,
|
|
nfhp->nfh_len)) {
|
|
/* Found an open, close it. */
|
|
KASSERT((op->nfso_opencnt == 0),
|
|
("nfscl: bad open cnt on server"));
|
|
NFSUNLOCKCLSTATE();
|
|
nfsrpc_doclose(VFSTONFS(vnode_mount(vp)), op,
|
|
p);
|
|
NFSLOCKCLSTATE();
|
|
goto lookformore;
|
|
}
|
|
op = LIST_NEXT(op, nfso_list);
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Return all delegations on this client.
|
|
* (Must be called with client sleep lock.)
|
|
*/
|
|
static void
|
|
nfscl_delegreturnall(struct nfsclclient *clp, NFSPROC_T *p)
|
|
{
|
|
struct nfscldeleg *dp, *ndp;
|
|
struct ucred *cred;
|
|
|
|
cred = newnfs_getcred();
|
|
TAILQ_FOREACH_SAFE(dp, &clp->nfsc_deleg, nfsdl_list, ndp) {
|
|
nfscl_cleandeleg(dp);
|
|
(void) nfscl_trydelegreturn(dp, cred, clp->nfsc_nmp, p);
|
|
nfscl_freedeleg(&clp->nfsc_deleg, dp);
|
|
}
|
|
NFSFREECRED(cred);
|
|
}
|
|
|
|
/*
|
|
* Do a callback RPC.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_docb(struct nfsrv_descript *nd, NFSPROC_T *p)
|
|
{
|
|
int clist, gotseq_ok, i, j, k, op, rcalls;
|
|
u_int32_t *tl;
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp = NULL;
|
|
int numops, taglen = -1, error = 0, trunc;
|
|
u_int32_t minorvers, retops = 0, *retopsp = NULL, *repp, cbident;
|
|
u_char tag[NFSV4_SMALLSTR + 1], *tagstr;
|
|
vnode_t vp = NULL;
|
|
struct nfsnode *np;
|
|
struct vattr va;
|
|
struct nfsfh *nfhp;
|
|
mount_t mp;
|
|
nfsattrbit_t attrbits, rattrbits;
|
|
nfsv4stateid_t stateid;
|
|
uint32_t seqid, slotid = 0, highslot, cachethis;
|
|
uint8_t sessionid[NFSX_V4SESSIONID];
|
|
struct mbuf *rep;
|
|
struct nfscllayout *lyp;
|
|
uint64_t filesid[2], len, off;
|
|
int changed, gotone, laytype, recalltype;
|
|
uint32_t iomode;
|
|
struct nfsclrecalllayout *recallp = NULL;
|
|
|
|
gotseq_ok = 0;
|
|
nfsrvd_rephead(nd);
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
taglen = fxdr_unsigned(int, *tl);
|
|
if (taglen < 0) {
|
|
error = EBADRPC;
|
|
goto nfsmout;
|
|
}
|
|
if (taglen <= NFSV4_SMALLSTR)
|
|
tagstr = tag;
|
|
else
|
|
tagstr = malloc(taglen + 1, M_TEMP, M_WAITOK);
|
|
error = nfsrv_mtostr(nd, tagstr, taglen);
|
|
if (error) {
|
|
if (taglen > NFSV4_SMALLSTR)
|
|
free(tagstr, M_TEMP);
|
|
taglen = -1;
|
|
goto nfsmout;
|
|
}
|
|
(void) nfsm_strtom(nd, tag, taglen);
|
|
if (taglen > NFSV4_SMALLSTR) {
|
|
free(tagstr, M_TEMP);
|
|
}
|
|
NFSM_BUILD(retopsp, u_int32_t *, NFSX_UNSIGNED);
|
|
NFSM_DISSECT(tl, u_int32_t *, 3 * NFSX_UNSIGNED);
|
|
minorvers = fxdr_unsigned(u_int32_t, *tl++);
|
|
if (minorvers != NFSV4_MINORVERSION && minorvers != NFSV41_MINORVERSION)
|
|
nd->nd_repstat = NFSERR_MINORVERMISMATCH;
|
|
cbident = fxdr_unsigned(u_int32_t, *tl++);
|
|
if (nd->nd_repstat)
|
|
numops = 0;
|
|
else
|
|
numops = fxdr_unsigned(int, *tl);
|
|
/*
|
|
* Loop around doing the sub ops.
|
|
*/
|
|
for (i = 0; i < numops; i++) {
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED);
|
|
NFSM_BUILD(repp, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
*repp++ = *tl;
|
|
op = fxdr_unsigned(int, *tl);
|
|
if (op < NFSV4OP_CBGETATTR ||
|
|
(op > NFSV4OP_CBRECALL && minorvers == NFSV4_MINORVERSION) ||
|
|
(op > NFSV4OP_CBNOTIFYDEVID &&
|
|
minorvers == NFSV41_MINORVERSION)) {
|
|
nd->nd_repstat = NFSERR_OPILLEGAL;
|
|
*repp = nfscl_errmap(nd);
|
|
retops++;
|
|
break;
|
|
}
|
|
nd->nd_procnum = op;
|
|
if (op < NFSV4OP_CBNOPS)
|
|
newnfsstats.cbrpccnt[nd->nd_procnum]++;
|
|
switch (op) {
|
|
case NFSV4OP_CBGETATTR:
|
|
NFSCL_DEBUG(4, "cbgetattr\n");
|
|
mp = NULL;
|
|
vp = NULL;
|
|
error = nfsm_getfh(nd, &nfhp);
|
|
if (!error)
|
|
error = nfsrv_getattrbits(nd, &attrbits,
|
|
NULL, NULL);
|
|
if (error == 0 && i == 0 &&
|
|
minorvers != NFSV4_MINORVERSION)
|
|
error = NFSERR_OPNOTINSESS;
|
|
if (!error) {
|
|
mp = nfscl_getmnt(minorvers, sessionid, cbident,
|
|
&clp);
|
|
if (mp == NULL)
|
|
error = NFSERR_SERVERFAULT;
|
|
}
|
|
if (!error) {
|
|
error = nfscl_ngetreopen(mp, nfhp->nfh_fh,
|
|
nfhp->nfh_len, p, &np);
|
|
if (!error)
|
|
vp = NFSTOV(np);
|
|
}
|
|
if (!error) {
|
|
NFSZERO_ATTRBIT(&rattrbits);
|
|
NFSLOCKCLSTATE();
|
|
dp = nfscl_finddeleg(clp, nfhp->nfh_fh,
|
|
nfhp->nfh_len);
|
|
if (dp != NULL) {
|
|
if (NFSISSET_ATTRBIT(&attrbits,
|
|
NFSATTRBIT_SIZE)) {
|
|
if (vp != NULL)
|
|
va.va_size = np->n_size;
|
|
else
|
|
va.va_size =
|
|
dp->nfsdl_size;
|
|
NFSSETBIT_ATTRBIT(&rattrbits,
|
|
NFSATTRBIT_SIZE);
|
|
}
|
|
if (NFSISSET_ATTRBIT(&attrbits,
|
|
NFSATTRBIT_CHANGE)) {
|
|
va.va_filerev =
|
|
dp->nfsdl_change;
|
|
if (vp == NULL ||
|
|
(np->n_flag & NDELEGMOD))
|
|
va.va_filerev++;
|
|
NFSSETBIT_ATTRBIT(&rattrbits,
|
|
NFSATTRBIT_CHANGE);
|
|
}
|
|
} else
|
|
error = NFSERR_SERVERFAULT;
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
if (vp != NULL)
|
|
vrele(vp);
|
|
if (mp != NULL)
|
|
vfs_unbusy(mp);
|
|
if (nfhp != NULL)
|
|
FREE((caddr_t)nfhp, M_NFSFH);
|
|
if (!error)
|
|
(void) nfsv4_fillattr(nd, NULL, NULL, NULL, &va,
|
|
NULL, 0, &rattrbits, NULL, NULL, 0, 0, 0, 0,
|
|
(uint64_t)0);
|
|
break;
|
|
case NFSV4OP_CBRECALL:
|
|
NFSCL_DEBUG(4, "cbrecall\n");
|
|
NFSM_DISSECT(tl, u_int32_t *, NFSX_STATEID +
|
|
NFSX_UNSIGNED);
|
|
stateid.seqid = *tl++;
|
|
NFSBCOPY((caddr_t)tl, (caddr_t)stateid.other,
|
|
NFSX_STATEIDOTHER);
|
|
tl += (NFSX_STATEIDOTHER / NFSX_UNSIGNED);
|
|
trunc = fxdr_unsigned(int, *tl);
|
|
error = nfsm_getfh(nd, &nfhp);
|
|
if (error == 0 && i == 0 &&
|
|
minorvers != NFSV4_MINORVERSION)
|
|
error = NFSERR_OPNOTINSESS;
|
|
if (!error) {
|
|
NFSLOCKCLSTATE();
|
|
if (minorvers == NFSV4_MINORVERSION)
|
|
clp = nfscl_getclnt(cbident);
|
|
else
|
|
clp = nfscl_getclntsess(sessionid);
|
|
if (clp != NULL) {
|
|
dp = nfscl_finddeleg(clp, nfhp->nfh_fh,
|
|
nfhp->nfh_len);
|
|
if (dp != NULL && (dp->nfsdl_flags &
|
|
NFSCLDL_DELEGRET) == 0) {
|
|
dp->nfsdl_flags |=
|
|
NFSCLDL_RECALL;
|
|
wakeup((caddr_t)clp);
|
|
}
|
|
} else {
|
|
error = NFSERR_SERVERFAULT;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
if (nfhp != NULL)
|
|
FREE((caddr_t)nfhp, M_NFSFH);
|
|
break;
|
|
case NFSV4OP_CBLAYOUTRECALL:
|
|
NFSCL_DEBUG(4, "cblayrec\n");
|
|
nfhp = NULL;
|
|
NFSM_DISSECT(tl, uint32_t *, 4 * NFSX_UNSIGNED);
|
|
laytype = fxdr_unsigned(int, *tl++);
|
|
iomode = fxdr_unsigned(uint32_t, *tl++);
|
|
if (newnfs_true == *tl++)
|
|
changed = 1;
|
|
else
|
|
changed = 0;
|
|
recalltype = fxdr_unsigned(int, *tl);
|
|
recallp = malloc(sizeof(*recallp), M_NFSLAYRECALL,
|
|
M_WAITOK);
|
|
if (laytype != NFSLAYOUT_NFSV4_1_FILES)
|
|
error = NFSERR_NOMATCHLAYOUT;
|
|
else if (recalltype == NFSLAYOUTRETURN_FILE) {
|
|
error = nfsm_getfh(nd, &nfhp);
|
|
NFSCL_DEBUG(4, "retfile getfh=%d\n", error);
|
|
if (error != 0)
|
|
goto nfsmout;
|
|
NFSM_DISSECT(tl, u_int32_t *, 2 * NFSX_HYPER +
|
|
NFSX_STATEID);
|
|
off = fxdr_hyper(tl); tl += 2;
|
|
len = fxdr_hyper(tl); tl += 2;
|
|
stateid.seqid = fxdr_unsigned(uint32_t, *tl++);
|
|
NFSBCOPY(tl, stateid.other, NFSX_STATEIDOTHER);
|
|
if (minorvers == NFSV4_MINORVERSION)
|
|
error = NFSERR_NOTSUPP;
|
|
else if (i == 0)
|
|
error = NFSERR_OPNOTINSESS;
|
|
if (error == 0) {
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_getclntsess(sessionid);
|
|
NFSCL_DEBUG(4, "cbly clp=%p\n", clp);
|
|
if (clp != NULL) {
|
|
lyp = nfscl_findlayout(clp,
|
|
nfhp->nfh_fh,
|
|
nfhp->nfh_len);
|
|
NFSCL_DEBUG(4, "cblyp=%p\n",
|
|
lyp);
|
|
if (lyp != NULL &&
|
|
(lyp->nfsly_flags &
|
|
NFSLY_FILES) != 0 &&
|
|
!NFSBCMP(stateid.other,
|
|
lyp->nfsly_stateid.other,
|
|
NFSX_STATEIDOTHER)) {
|
|
error =
|
|
nfscl_layoutrecall(
|
|
recalltype,
|
|
lyp, iomode, off,
|
|
len, stateid.seqid,
|
|
recallp);
|
|
recallp = NULL;
|
|
wakeup(clp);
|
|
NFSCL_DEBUG(4,
|
|
"aft layrcal=%d\n",
|
|
error);
|
|
} else
|
|
error =
|
|
NFSERR_NOMATCHLAYOUT;
|
|
} else
|
|
error = NFSERR_NOMATCHLAYOUT;
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
free(nfhp, M_NFSFH);
|
|
} else if (recalltype == NFSLAYOUTRETURN_FSID) {
|
|
NFSM_DISSECT(tl, uint32_t *, 2 * NFSX_HYPER);
|
|
filesid[0] = fxdr_hyper(tl); tl += 2;
|
|
filesid[1] = fxdr_hyper(tl); tl += 2;
|
|
gotone = 0;
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_getclntsess(sessionid);
|
|
if (clp != NULL) {
|
|
TAILQ_FOREACH(lyp, &clp->nfsc_layout,
|
|
nfsly_list) {
|
|
if (lyp->nfsly_filesid[0] ==
|
|
filesid[0] &&
|
|
lyp->nfsly_filesid[1] ==
|
|
filesid[1]) {
|
|
error =
|
|
nfscl_layoutrecall(
|
|
recalltype,
|
|
lyp, iomode, 0,
|
|
UINT64_MAX,
|
|
lyp->nfsly_stateid.seqid,
|
|
recallp);
|
|
recallp = NULL;
|
|
gotone = 1;
|
|
}
|
|
}
|
|
if (gotone != 0)
|
|
wakeup(clp);
|
|
else
|
|
error = NFSERR_NOMATCHLAYOUT;
|
|
} else
|
|
error = NFSERR_NOMATCHLAYOUT;
|
|
NFSUNLOCKCLSTATE();
|
|
} else if (recalltype == NFSLAYOUTRETURN_ALL) {
|
|
gotone = 0;
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_getclntsess(sessionid);
|
|
if (clp != NULL) {
|
|
TAILQ_FOREACH(lyp, &clp->nfsc_layout,
|
|
nfsly_list) {
|
|
error = nfscl_layoutrecall(
|
|
recalltype, lyp, iomode, 0,
|
|
UINT64_MAX,
|
|
lyp->nfsly_stateid.seqid,
|
|
recallp);
|
|
recallp = NULL;
|
|
gotone = 1;
|
|
}
|
|
if (gotone != 0)
|
|
wakeup(clp);
|
|
else
|
|
error = NFSERR_NOMATCHLAYOUT;
|
|
} else
|
|
error = NFSERR_NOMATCHLAYOUT;
|
|
NFSUNLOCKCLSTATE();
|
|
} else
|
|
error = NFSERR_NOMATCHLAYOUT;
|
|
if (recallp != NULL) {
|
|
free(recallp, M_NFSLAYRECALL);
|
|
recallp = NULL;
|
|
}
|
|
break;
|
|
case NFSV4OP_CBSEQUENCE:
|
|
NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
|
|
5 * NFSX_UNSIGNED);
|
|
bcopy(tl, sessionid, NFSX_V4SESSIONID);
|
|
tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
|
|
seqid = fxdr_unsigned(uint32_t, *tl++);
|
|
slotid = fxdr_unsigned(uint32_t, *tl++);
|
|
highslot = fxdr_unsigned(uint32_t, *tl++);
|
|
cachethis = *tl++;
|
|
/* Throw away the referring call stuff. */
|
|
clist = fxdr_unsigned(int, *tl);
|
|
for (j = 0; j < clist; j++) {
|
|
NFSM_DISSECT(tl, uint32_t *, NFSX_V4SESSIONID +
|
|
NFSX_UNSIGNED);
|
|
tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
|
|
rcalls = fxdr_unsigned(int, *tl);
|
|
for (k = 0; k < rcalls; k++) {
|
|
NFSM_DISSECT(tl, uint32_t *,
|
|
2 * NFSX_UNSIGNED);
|
|
}
|
|
}
|
|
NFSLOCKCLSTATE();
|
|
if (i == 0) {
|
|
clp = nfscl_getclntsess(sessionid);
|
|
if (clp == NULL)
|
|
error = NFSERR_SERVERFAULT;
|
|
} else
|
|
error = NFSERR_SEQUENCEPOS;
|
|
if (error == 0)
|
|
error = nfsv4_seqsession(seqid, slotid,
|
|
highslot,
|
|
NFSMNT_MDSSESSION(clp->nfsc_nmp)->
|
|
nfsess_cbslots, &rep,
|
|
NFSMNT_MDSSESSION(clp->nfsc_nmp)->
|
|
nfsess_backslots);
|
|
NFSUNLOCKCLSTATE();
|
|
if (error == 0) {
|
|
gotseq_ok = 1;
|
|
if (rep != NULL) {
|
|
NFSCL_DEBUG(4, "Got cbretry\n");
|
|
m_freem(nd->nd_mreq);
|
|
nd->nd_mreq = rep;
|
|
rep = NULL;
|
|
goto out;
|
|
}
|
|
NFSM_BUILD(tl, uint32_t *,
|
|
NFSX_V4SESSIONID + 4 * NFSX_UNSIGNED);
|
|
bcopy(sessionid, tl, NFSX_V4SESSIONID);
|
|
tl += NFSX_V4SESSIONID / NFSX_UNSIGNED;
|
|
*tl++ = txdr_unsigned(seqid);
|
|
*tl++ = txdr_unsigned(slotid);
|
|
*tl++ = txdr_unsigned(NFSV4_CBSLOTS - 1);
|
|
*tl = txdr_unsigned(NFSV4_CBSLOTS - 1);
|
|
}
|
|
break;
|
|
default:
|
|
if (i == 0 && minorvers == NFSV41_MINORVERSION)
|
|
error = NFSERR_OPNOTINSESS;
|
|
else {
|
|
NFSCL_DEBUG(1, "unsupp callback %d\n", op);
|
|
error = NFSERR_NOTSUPP;
|
|
}
|
|
break;
|
|
};
|
|
if (error) {
|
|
if (error == EBADRPC || error == NFSERR_BADXDR) {
|
|
nd->nd_repstat = NFSERR_BADXDR;
|
|
} else {
|
|
nd->nd_repstat = error;
|
|
}
|
|
error = 0;
|
|
}
|
|
retops++;
|
|
if (nd->nd_repstat) {
|
|
*repp = nfscl_errmap(nd);
|
|
break;
|
|
} else
|
|
*repp = 0; /* NFS4_OK */
|
|
}
|
|
nfsmout:
|
|
if (recallp != NULL)
|
|
free(recallp, M_NFSLAYRECALL);
|
|
if (error) {
|
|
if (error == EBADRPC || error == NFSERR_BADXDR)
|
|
nd->nd_repstat = NFSERR_BADXDR;
|
|
else
|
|
printf("nfsv4 comperr1=%d\n", error);
|
|
}
|
|
if (taglen == -1) {
|
|
NFSM_BUILD(tl, u_int32_t *, 2 * NFSX_UNSIGNED);
|
|
*tl++ = 0;
|
|
*tl = 0;
|
|
} else {
|
|
*retopsp = txdr_unsigned(retops);
|
|
}
|
|
*nd->nd_errp = nfscl_errmap(nd);
|
|
out:
|
|
if (gotseq_ok != 0) {
|
|
rep = m_copym(nd->nd_mreq, 0, M_COPYALL, M_WAITOK);
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_getclntsess(sessionid);
|
|
if (clp != NULL) {
|
|
nfsv4_seqsess_cacherep(slotid,
|
|
NFSMNT_MDSSESSION(clp->nfsc_nmp)->nfsess_cbslots,
|
|
rep);
|
|
NFSUNLOCKCLSTATE();
|
|
} else {
|
|
NFSUNLOCKCLSTATE();
|
|
m_freem(rep);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Generate the next cbident value. Basically just increment a static value
|
|
* and then check that it isn't already in the list, if it has wrapped around.
|
|
*/
|
|
static u_int32_t
|
|
nfscl_nextcbident(void)
|
|
{
|
|
struct nfsclclient *clp;
|
|
int matched;
|
|
static u_int32_t nextcbident = 0;
|
|
static int haswrapped = 0;
|
|
|
|
nextcbident++;
|
|
if (nextcbident == 0)
|
|
haswrapped = 1;
|
|
if (haswrapped) {
|
|
/*
|
|
* Search the clientid list for one already using this cbident.
|
|
*/
|
|
do {
|
|
matched = 0;
|
|
NFSLOCKCLSTATE();
|
|
LIST_FOREACH(clp, &nfsclhead, nfsc_list) {
|
|
if (clp->nfsc_cbident == nextcbident) {
|
|
matched = 1;
|
|
break;
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
if (matched == 1)
|
|
nextcbident++;
|
|
} while (matched);
|
|
}
|
|
return (nextcbident);
|
|
}
|
|
|
|
/*
|
|
* Get the mount point related to a given cbident or session and busy it.
|
|
*/
|
|
static mount_t
|
|
nfscl_getmnt(int minorvers, uint8_t *sessionid, u_int32_t cbident,
|
|
struct nfsclclient **clpp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
mount_t mp;
|
|
int error;
|
|
|
|
*clpp = NULL;
|
|
NFSLOCKCLSTATE();
|
|
LIST_FOREACH(clp, &nfsclhead, nfsc_list) {
|
|
if (minorvers == NFSV4_MINORVERSION) {
|
|
if (clp->nfsc_cbident == cbident)
|
|
break;
|
|
} else if (!NFSBCMP(NFSMNT_MDSSESSION(clp->nfsc_nmp)->
|
|
nfsess_sessionid, sessionid, NFSX_V4SESSIONID))
|
|
break;
|
|
}
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (NULL);
|
|
}
|
|
mp = clp->nfsc_nmp->nm_mountp;
|
|
vfs_ref(mp);
|
|
NFSUNLOCKCLSTATE();
|
|
error = vfs_busy(mp, 0);
|
|
vfs_rel(mp);
|
|
if (error != 0)
|
|
return (NULL);
|
|
*clpp = clp;
|
|
return (mp);
|
|
}
|
|
|
|
/*
|
|
* Get the clientid pointer related to a given cbident.
|
|
*/
|
|
static struct nfsclclient *
|
|
nfscl_getclnt(u_int32_t cbident)
|
|
{
|
|
struct nfsclclient *clp;
|
|
|
|
LIST_FOREACH(clp, &nfsclhead, nfsc_list)
|
|
if (clp->nfsc_cbident == cbident)
|
|
break;
|
|
return (clp);
|
|
}
|
|
|
|
/*
|
|
* Get the clientid pointer related to a given sessionid.
|
|
*/
|
|
static struct nfsclclient *
|
|
nfscl_getclntsess(uint8_t *sessionid)
|
|
{
|
|
struct nfsclclient *clp;
|
|
|
|
LIST_FOREACH(clp, &nfsclhead, nfsc_list)
|
|
if (!NFSBCMP(NFSMNT_MDSSESSION(clp->nfsc_nmp)->nfsess_sessionid,
|
|
sessionid, NFSX_V4SESSIONID))
|
|
break;
|
|
return (clp);
|
|
}
|
|
|
|
/*
|
|
* Search for a lock conflict locally on the client. A conflict occurs if
|
|
* - not same owner and overlapping byte range and at least one of them is
|
|
* a write lock or this is an unlock.
|
|
*/
|
|
static int
|
|
nfscl_localconflict(struct nfsclclient *clp, u_int8_t *fhp, int fhlen,
|
|
struct nfscllock *nlop, u_int8_t *own, struct nfscldeleg *dp,
|
|
struct nfscllock **lopp)
|
|
{
|
|
struct nfsclowner *owp;
|
|
struct nfsclopen *op;
|
|
int ret;
|
|
|
|
if (dp != NULL) {
|
|
ret = nfscl_checkconflict(&dp->nfsdl_lock, nlop, own, lopp);
|
|
if (ret)
|
|
return (ret);
|
|
}
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if (op->nfso_fhlen == fhlen &&
|
|
!NFSBCMP(op->nfso_fh, fhp, fhlen)) {
|
|
ret = nfscl_checkconflict(&op->nfso_lock, nlop,
|
|
own, lopp);
|
|
if (ret)
|
|
return (ret);
|
|
}
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
nfscl_checkconflict(struct nfscllockownerhead *lhp, struct nfscllock *nlop,
|
|
u_int8_t *own, struct nfscllock **lopp)
|
|
{
|
|
struct nfscllockowner *lp;
|
|
struct nfscllock *lop;
|
|
|
|
LIST_FOREACH(lp, lhp, nfsl_list) {
|
|
if (NFSBCMP(lp->nfsl_owner, own, NFSV4CL_LOCKNAMELEN)) {
|
|
LIST_FOREACH(lop, &lp->nfsl_lock, nfslo_list) {
|
|
if (lop->nfslo_first >= nlop->nfslo_end)
|
|
break;
|
|
if (lop->nfslo_end <= nlop->nfslo_first)
|
|
continue;
|
|
if (lop->nfslo_type == F_WRLCK ||
|
|
nlop->nfslo_type == F_WRLCK ||
|
|
nlop->nfslo_type == F_UNLCK) {
|
|
if (lopp != NULL)
|
|
*lopp = lop;
|
|
return (NFSERR_DENIED);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Check for a local conflicting lock.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_lockt(vnode_t vp, struct nfsclclient *clp, u_int64_t off,
|
|
u_int64_t len, struct flock *fl, NFSPROC_T *p, void *id, int flags)
|
|
{
|
|
struct nfscllock *lop, nlck;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np;
|
|
u_int8_t own[NFSV4CL_LOCKNAMELEN];
|
|
int error;
|
|
|
|
nlck.nfslo_type = fl->l_type;
|
|
nlck.nfslo_first = off;
|
|
if (len == NFS64BITSSET) {
|
|
nlck.nfslo_end = NFS64BITSSET;
|
|
} else {
|
|
nlck.nfslo_end = off + len;
|
|
if (nlck.nfslo_end <= nlck.nfslo_first)
|
|
return (NFSERR_INVAL);
|
|
}
|
|
np = VTONFS(vp);
|
|
nfscl_filllockowner(id, own, flags);
|
|
NFSLOCKCLSTATE();
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
error = nfscl_localconflict(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len,
|
|
&nlck, own, dp, &lop);
|
|
if (error != 0) {
|
|
fl->l_whence = SEEK_SET;
|
|
fl->l_start = lop->nfslo_first;
|
|
if (lop->nfslo_end == NFS64BITSSET)
|
|
fl->l_len = 0;
|
|
else
|
|
fl->l_len = lop->nfslo_end - lop->nfslo_first;
|
|
fl->l_pid = (pid_t)0;
|
|
fl->l_type = lop->nfslo_type;
|
|
error = -1; /* no RPC required */
|
|
} else if (dp != NULL && ((dp->nfsdl_flags & NFSCLDL_WRITE) ||
|
|
fl->l_type == F_RDLCK)) {
|
|
/*
|
|
* The delegation ensures that there isn't a conflicting
|
|
* lock on the server, so return -1 to indicate an RPC
|
|
* isn't required.
|
|
*/
|
|
fl->l_type = F_UNLCK;
|
|
error = -1;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Handle Recall of a delegation.
|
|
* The clp must be exclusive locked when this is called.
|
|
*/
|
|
static int
|
|
nfscl_recalldeleg(struct nfsclclient *clp, struct nfsmount *nmp,
|
|
struct nfscldeleg *dp, vnode_t vp, struct ucred *cred, NFSPROC_T *p,
|
|
int called_from_renewthread)
|
|
{
|
|
struct nfsclowner *owp, *lowp, *nowp;
|
|
struct nfsclopen *op, *lop;
|
|
struct nfscllockowner *lp;
|
|
struct nfscllock *lckp;
|
|
struct nfsnode *np;
|
|
int error = 0, ret, gotvp = 0;
|
|
|
|
if (vp == NULL) {
|
|
/*
|
|
* First, get a vnode for the file. This is needed to do RPCs.
|
|
*/
|
|
ret = nfscl_ngetreopen(nmp->nm_mountp, dp->nfsdl_fh,
|
|
dp->nfsdl_fhlen, p, &np);
|
|
if (ret) {
|
|
/*
|
|
* File isn't open, so nothing to move over to the
|
|
* server.
|
|
*/
|
|
return (0);
|
|
}
|
|
vp = NFSTOV(np);
|
|
gotvp = 1;
|
|
} else {
|
|
np = VTONFS(vp);
|
|
}
|
|
dp->nfsdl_flags &= ~NFSCLDL_MODTIMESET;
|
|
|
|
/*
|
|
* Ok, if it's a write delegation, flush data to the server, so
|
|
* that close/open consistency is retained.
|
|
*/
|
|
ret = 0;
|
|
NFSLOCKNODE(np);
|
|
if ((dp->nfsdl_flags & NFSCLDL_WRITE) && (np->n_flag & NMODIFIED)) {
|
|
np->n_flag |= NDELEGRECALL;
|
|
NFSUNLOCKNODE(np);
|
|
ret = ncl_flush(vp, MNT_WAIT, cred, p, 1,
|
|
called_from_renewthread);
|
|
NFSLOCKNODE(np);
|
|
np->n_flag &= ~NDELEGRECALL;
|
|
}
|
|
NFSINVALATTRCACHE(np);
|
|
NFSUNLOCKNODE(np);
|
|
if (ret == EIO && called_from_renewthread != 0) {
|
|
/*
|
|
* If the flush failed with EIO for the renew thread,
|
|
* return now, so that the dirty buffer will be flushed
|
|
* later.
|
|
*/
|
|
if (gotvp != 0)
|
|
vrele(vp);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* Now, for each openowner with opens issued locally, move them
|
|
* over to state against the server.
|
|
*/
|
|
LIST_FOREACH(lowp, &dp->nfsdl_owner, nfsow_list) {
|
|
lop = LIST_FIRST(&lowp->nfsow_open);
|
|
if (lop != NULL) {
|
|
if (LIST_NEXT(lop, nfso_list) != NULL)
|
|
panic("nfsdlg mult opens");
|
|
/*
|
|
* Look for the same openowner against the server.
|
|
*/
|
|
LIST_FOREACH(owp, &clp->nfsc_owner, nfsow_list) {
|
|
if (!NFSBCMP(lowp->nfsow_owner,
|
|
owp->nfsow_owner, NFSV4CL_LOCKNAMELEN)) {
|
|
newnfs_copycred(&dp->nfsdl_cred, cred);
|
|
ret = nfscl_moveopen(vp, clp, nmp, lop,
|
|
owp, dp, cred, p);
|
|
if (ret == NFSERR_STALECLIENTID ||
|
|
ret == NFSERR_STALEDONTRECOVER ||
|
|
ret == NFSERR_BADSESSION) {
|
|
if (gotvp)
|
|
vrele(vp);
|
|
return (ret);
|
|
}
|
|
if (ret) {
|
|
nfscl_freeopen(lop, 1);
|
|
if (!error)
|
|
error = ret;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If no openowner found, create one and get an open
|
|
* for it.
|
|
*/
|
|
if (owp == NULL) {
|
|
MALLOC(nowp, struct nfsclowner *,
|
|
sizeof (struct nfsclowner), M_NFSCLOWNER,
|
|
M_WAITOK);
|
|
nfscl_newopen(clp, NULL, &owp, &nowp, &op,
|
|
NULL, lowp->nfsow_owner, dp->nfsdl_fh,
|
|
dp->nfsdl_fhlen, NULL);
|
|
newnfs_copycred(&dp->nfsdl_cred, cred);
|
|
ret = nfscl_moveopen(vp, clp, nmp, lop,
|
|
owp, dp, cred, p);
|
|
if (ret) {
|
|
nfscl_freeopenowner(owp, 0);
|
|
if (ret == NFSERR_STALECLIENTID ||
|
|
ret == NFSERR_STALEDONTRECOVER ||
|
|
ret == NFSERR_BADSESSION) {
|
|
if (gotvp)
|
|
vrele(vp);
|
|
return (ret);
|
|
}
|
|
if (ret) {
|
|
nfscl_freeopen(lop, 1);
|
|
if (!error)
|
|
error = ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Now, get byte range locks for any locks done locally.
|
|
*/
|
|
LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
|
|
LIST_FOREACH(lckp, &lp->nfsl_lock, nfslo_list) {
|
|
newnfs_copycred(&dp->nfsdl_cred, cred);
|
|
ret = nfscl_relock(vp, clp, nmp, lp, lckp, cred, p);
|
|
if (ret == NFSERR_STALESTATEID ||
|
|
ret == NFSERR_STALEDONTRECOVER ||
|
|
ret == NFSERR_STALECLIENTID ||
|
|
ret == NFSERR_BADSESSION) {
|
|
if (gotvp)
|
|
vrele(vp);
|
|
return (ret);
|
|
}
|
|
if (ret && !error)
|
|
error = ret;
|
|
}
|
|
}
|
|
if (gotvp)
|
|
vrele(vp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Move a locally issued open over to an owner on the state list.
|
|
* SIDE EFFECT: If it needs to sleep (do an rpc), it unlocks clstate and
|
|
* returns with it unlocked.
|
|
*/
|
|
static int
|
|
nfscl_moveopen(vnode_t vp, struct nfsclclient *clp, struct nfsmount *nmp,
|
|
struct nfsclopen *lop, struct nfsclowner *owp, struct nfscldeleg *dp,
|
|
struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfsclopen *op, *nop;
|
|
struct nfscldeleg *ndp;
|
|
struct nfsnode *np;
|
|
int error = 0, newone;
|
|
|
|
/*
|
|
* First, look for an appropriate open, If found, just increment the
|
|
* opencnt in it.
|
|
*/
|
|
LIST_FOREACH(op, &owp->nfsow_open, nfso_list) {
|
|
if ((op->nfso_mode & lop->nfso_mode) == lop->nfso_mode &&
|
|
op->nfso_fhlen == lop->nfso_fhlen &&
|
|
!NFSBCMP(op->nfso_fh, lop->nfso_fh, op->nfso_fhlen)) {
|
|
op->nfso_opencnt += lop->nfso_opencnt;
|
|
nfscl_freeopen(lop, 1);
|
|
return (0);
|
|
}
|
|
}
|
|
|
|
/* No appropriate open, so we have to do one against the server. */
|
|
np = VTONFS(vp);
|
|
MALLOC(nop, struct nfsclopen *, sizeof (struct nfsclopen) +
|
|
lop->nfso_fhlen - 1, M_NFSCLOPEN, M_WAITOK);
|
|
newone = 0;
|
|
nfscl_newopen(clp, NULL, &owp, NULL, &op, &nop, owp->nfsow_owner,
|
|
lop->nfso_fh, lop->nfso_fhlen, &newone);
|
|
ndp = dp;
|
|
error = nfscl_tryopen(nmp, vp, np->n_v4->n4_data, np->n_v4->n4_fhlen,
|
|
lop->nfso_fh, lop->nfso_fhlen, lop->nfso_mode, op,
|
|
NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, &ndp, 0, 0, cred, p);
|
|
if (error) {
|
|
if (newone)
|
|
nfscl_freeopen(op, 0);
|
|
} else {
|
|
if (newone)
|
|
newnfs_copyincred(cred, &op->nfso_cred);
|
|
op->nfso_mode |= lop->nfso_mode;
|
|
op->nfso_opencnt += lop->nfso_opencnt;
|
|
nfscl_freeopen(lop, 1);
|
|
}
|
|
if (nop != NULL)
|
|
FREE((caddr_t)nop, M_NFSCLOPEN);
|
|
if (ndp != NULL) {
|
|
/*
|
|
* What should I do with the returned delegation, since the
|
|
* delegation is being recalled? For now, just printf and
|
|
* through it away.
|
|
*/
|
|
printf("Moveopen returned deleg\n");
|
|
FREE((caddr_t)ndp, M_NFSCLDELEG);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Recall all delegations on this client.
|
|
*/
|
|
static void
|
|
nfscl_totalrecall(struct nfsclclient *clp)
|
|
{
|
|
struct nfscldeleg *dp;
|
|
|
|
TAILQ_FOREACH(dp, &clp->nfsc_deleg, nfsdl_list) {
|
|
if ((dp->nfsdl_flags & NFSCLDL_DELEGRET) == 0)
|
|
dp->nfsdl_flags |= NFSCLDL_RECALL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Relock byte ranges. Called for delegation recall and state expiry.
|
|
*/
|
|
static int
|
|
nfscl_relock(vnode_t vp, struct nfsclclient *clp, struct nfsmount *nmp,
|
|
struct nfscllockowner *lp, struct nfscllock *lop, struct ucred *cred,
|
|
NFSPROC_T *p)
|
|
{
|
|
struct nfscllockowner *nlp;
|
|
struct nfsfh *nfhp;
|
|
u_int64_t off, len;
|
|
u_int32_t clidrev = 0;
|
|
int error, newone, donelocally;
|
|
|
|
off = lop->nfslo_first;
|
|
len = lop->nfslo_end - lop->nfslo_first;
|
|
error = nfscl_getbytelock(vp, off, len, lop->nfslo_type, cred, p,
|
|
clp, 1, NULL, lp->nfsl_lockflags, lp->nfsl_owner,
|
|
lp->nfsl_openowner, &nlp, &newone, &donelocally);
|
|
if (error || donelocally)
|
|
return (error);
|
|
if (nmp->nm_clp != NULL)
|
|
clidrev = nmp->nm_clp->nfsc_clientidrev;
|
|
else
|
|
clidrev = 0;
|
|
nfhp = VTONFS(vp)->n_fhp;
|
|
error = nfscl_trylock(nmp, vp, nfhp->nfh_fh,
|
|
nfhp->nfh_len, nlp, newone, 0, off,
|
|
len, lop->nfslo_type, cred, p);
|
|
if (error)
|
|
nfscl_freelockowner(nlp, 0);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Called to re-open a file. Basically get a vnode for the file handle
|
|
* and then call nfsrpc_openrpc() to do the rest.
|
|
*/
|
|
static int
|
|
nfsrpc_reopen(struct nfsmount *nmp, u_int8_t *fhp, int fhlen,
|
|
u_int32_t mode, struct nfsclopen *op, struct nfscldeleg **dpp,
|
|
struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfsnode *np;
|
|
vnode_t vp;
|
|
int error;
|
|
|
|
error = nfscl_ngetreopen(nmp->nm_mountp, fhp, fhlen, p, &np);
|
|
if (error)
|
|
return (error);
|
|
vp = NFSTOV(np);
|
|
if (np->n_v4 != NULL) {
|
|
error = nfscl_tryopen(nmp, vp, np->n_v4->n4_data,
|
|
np->n_v4->n4_fhlen, fhp, fhlen, mode, op,
|
|
NFS4NODENAME(np->n_v4), np->n_v4->n4_namelen, dpp, 0, 0,
|
|
cred, p);
|
|
} else {
|
|
error = EINVAL;
|
|
}
|
|
vrele(vp);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Try an open against the server. Just call nfsrpc_openrpc(), retrying while
|
|
* NFSERR_DELAY. Also, try system credentials, if the passed in credentials
|
|
* fail.
|
|
*/
|
|
static int
|
|
nfscl_tryopen(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp, int fhlen,
|
|
u_int8_t *newfhp, int newfhlen, u_int32_t mode, struct nfsclopen *op,
|
|
u_int8_t *name, int namelen, struct nfscldeleg **ndpp,
|
|
int reclaim, u_int32_t delegtype, struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
int error;
|
|
|
|
do {
|
|
error = nfsrpc_openrpc(nmp, vp, fhp, fhlen, newfhp, newfhlen,
|
|
mode, op, name, namelen, ndpp, reclaim, delegtype, cred, p,
|
|
0, 0);
|
|
if (error == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, error, "nfstryop");
|
|
} while (error == NFSERR_DELAY);
|
|
if (error == EAUTH || error == EACCES) {
|
|
/* Try again using system credentials */
|
|
newnfs_setroot(cred);
|
|
do {
|
|
error = nfsrpc_openrpc(nmp, vp, fhp, fhlen, newfhp,
|
|
newfhlen, mode, op, name, namelen, ndpp, reclaim,
|
|
delegtype, cred, p, 1, 0);
|
|
if (error == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, error, "nfstryop");
|
|
} while (error == NFSERR_DELAY);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Try a byte range lock. Just loop on nfsrpc_lock() while it returns
|
|
* NFSERR_DELAY. Also, retry with system credentials, if the provided
|
|
* cred don't work.
|
|
*/
|
|
static int
|
|
nfscl_trylock(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp,
|
|
int fhlen, struct nfscllockowner *nlp, int newone, int reclaim,
|
|
u_int64_t off, u_int64_t len, short type, struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfsrv_descript nfsd, *nd = &nfsd;
|
|
int error;
|
|
|
|
do {
|
|
error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp, newone,
|
|
reclaim, off, len, type, cred, p, 0);
|
|
if (!error && nd->nd_repstat == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, (int)nd->nd_repstat,
|
|
"nfstrylck");
|
|
} while (!error && nd->nd_repstat == NFSERR_DELAY);
|
|
if (!error)
|
|
error = nd->nd_repstat;
|
|
if (error == EAUTH || error == EACCES) {
|
|
/* Try again using root credentials */
|
|
newnfs_setroot(cred);
|
|
do {
|
|
error = nfsrpc_lock(nd, nmp, vp, fhp, fhlen, nlp,
|
|
newone, reclaim, off, len, type, cred, p, 1);
|
|
if (!error && nd->nd_repstat == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, (int)nd->nd_repstat,
|
|
"nfstrylck");
|
|
} while (!error && nd->nd_repstat == NFSERR_DELAY);
|
|
if (!error)
|
|
error = nd->nd_repstat;
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Try a delegreturn against the server. Just call nfsrpc_delegreturn(),
|
|
* retrying while NFSERR_DELAY. Also, try system credentials, if the passed in
|
|
* credentials fail.
|
|
*/
|
|
static int
|
|
nfscl_trydelegreturn(struct nfscldeleg *dp, struct ucred *cred,
|
|
struct nfsmount *nmp, NFSPROC_T *p)
|
|
{
|
|
int error;
|
|
|
|
do {
|
|
error = nfsrpc_delegreturn(dp, cred, nmp, p, 0);
|
|
if (error == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, error, "nfstrydp");
|
|
} while (error == NFSERR_DELAY);
|
|
if (error == EAUTH || error == EACCES) {
|
|
/* Try again using system credentials */
|
|
newnfs_setroot(cred);
|
|
do {
|
|
error = nfsrpc_delegreturn(dp, cred, nmp, p, 1);
|
|
if (error == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, error, "nfstrydp");
|
|
} while (error == NFSERR_DELAY);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Try a close against the server. Just call nfsrpc_closerpc(),
|
|
* retrying while NFSERR_DELAY. Also, try system credentials, if the passed in
|
|
* credentials fail.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_tryclose(struct nfsclopen *op, struct ucred *cred,
|
|
struct nfsmount *nmp, NFSPROC_T *p)
|
|
{
|
|
struct nfsrv_descript nfsd, *nd = &nfsd;
|
|
int error;
|
|
|
|
do {
|
|
error = nfsrpc_closerpc(nd, nmp, op, cred, p, 0);
|
|
if (error == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, error, "nfstrycl");
|
|
} while (error == NFSERR_DELAY);
|
|
if (error == EAUTH || error == EACCES) {
|
|
/* Try again using system credentials */
|
|
newnfs_setroot(cred);
|
|
do {
|
|
error = nfsrpc_closerpc(nd, nmp, op, cred, p, 1);
|
|
if (error == NFSERR_DELAY)
|
|
(void) nfs_catnap(PZERO, error, "nfstrycl");
|
|
} while (error == NFSERR_DELAY);
|
|
}
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* Decide if a delegation on a file permits close without flushing writes
|
|
* to the server. This might be a big performance win in some environments.
|
|
* (Not useful until the client does caching on local stable storage.)
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_mustflush(vnode_t vp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np;
|
|
struct nfsmount *nmp;
|
|
|
|
np = VTONFS(vp);
|
|
nmp = VFSTONFS(vnode_mount(vp));
|
|
if (!NFSHASNFSV4(nmp))
|
|
return (1);
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (1);
|
|
}
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (dp != NULL && (dp->nfsdl_flags &
|
|
(NFSCLDL_WRITE | NFSCLDL_RECALL | NFSCLDL_DELEGRET)) ==
|
|
NFSCLDL_WRITE &&
|
|
(dp->nfsdl_sizelimit >= np->n_size ||
|
|
!NFSHASSTRICT3530(nmp))) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* See if a (write) delegation exists for this file.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_nodeleg(vnode_t vp, int writedeleg)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np;
|
|
struct nfsmount *nmp;
|
|
|
|
np = VTONFS(vp);
|
|
nmp = VFSTONFS(vnode_mount(vp));
|
|
if (!NFSHASNFSV4(nmp))
|
|
return (1);
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (1);
|
|
}
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (dp != NULL &&
|
|
(dp->nfsdl_flags & (NFSCLDL_RECALL | NFSCLDL_DELEGRET)) == 0 &&
|
|
(writedeleg == 0 || (dp->nfsdl_flags & NFSCLDL_WRITE) ==
|
|
NFSCLDL_WRITE)) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Look for an associated delegation that should be DelegReturned.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_removedeleg(vnode_t vp, NFSPROC_T *p, nfsv4stateid_t *stp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsclowner *owp;
|
|
struct nfscllockowner *lp;
|
|
struct nfsmount *nmp;
|
|
struct ucred *cred;
|
|
struct nfsnode *np;
|
|
int igotlock = 0, triedrecall = 0, needsrecall, retcnt = 0, islept;
|
|
|
|
nmp = VFSTONFS(vnode_mount(vp));
|
|
np = VTONFS(vp);
|
|
NFSLOCKCLSTATE();
|
|
/*
|
|
* Loop around waiting for:
|
|
* - outstanding I/O operations on delegations to complete
|
|
* - for a delegation on vp that has state, lock the client and
|
|
* do a recall
|
|
* - return delegation with no state
|
|
*/
|
|
while (1) {
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (retcnt);
|
|
}
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
|
|
np->n_fhp->nfh_len);
|
|
if (dp != NULL) {
|
|
/*
|
|
* Wait for outstanding I/O ops to be done.
|
|
*/
|
|
if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
|
|
if (igotlock) {
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
igotlock = 0;
|
|
}
|
|
dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED;
|
|
(void) nfsmsleep(&dp->nfsdl_rwlock,
|
|
NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL);
|
|
continue;
|
|
}
|
|
needsrecall = 0;
|
|
LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
|
|
if (!LIST_EMPTY(&owp->nfsow_open)) {
|
|
needsrecall = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (!needsrecall) {
|
|
LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
|
|
if (!LIST_EMPTY(&lp->nfsl_lock)) {
|
|
needsrecall = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (needsrecall && !triedrecall) {
|
|
dp->nfsdl_flags |= NFSCLDL_DELEGRET;
|
|
islept = 0;
|
|
while (!igotlock) {
|
|
igotlock = nfsv4_lock(&clp->nfsc_lock, 1,
|
|
&islept, NFSCLSTATEMUTEXPTR, NULL);
|
|
if (islept)
|
|
break;
|
|
}
|
|
if (islept)
|
|
continue;
|
|
NFSUNLOCKCLSTATE();
|
|
cred = newnfs_getcred();
|
|
newnfs_copycred(&dp->nfsdl_cred, cred);
|
|
(void) nfscl_recalldeleg(clp, nmp, dp, vp, cred, p, 0);
|
|
NFSFREECRED(cred);
|
|
triedrecall = 1;
|
|
NFSLOCKCLSTATE();
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
igotlock = 0;
|
|
continue;
|
|
}
|
|
*stp = dp->nfsdl_stateid;
|
|
retcnt = 1;
|
|
nfscl_cleandeleg(dp);
|
|
nfscl_freedeleg(&clp->nfsc_deleg, dp);
|
|
}
|
|
if (igotlock)
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
return (retcnt);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Look for associated delegation(s) that should be DelegReturned.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_renamedeleg(vnode_t fvp, nfsv4stateid_t *fstp, int *gotfdp, vnode_t tvp,
|
|
nfsv4stateid_t *tstp, int *gottdp, NFSPROC_T *p)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsclowner *owp;
|
|
struct nfscllockowner *lp;
|
|
struct nfsmount *nmp;
|
|
struct ucred *cred;
|
|
struct nfsnode *np;
|
|
int igotlock = 0, triedrecall = 0, needsrecall, retcnt = 0, islept;
|
|
|
|
nmp = VFSTONFS(vnode_mount(fvp));
|
|
*gotfdp = 0;
|
|
*gottdp = 0;
|
|
NFSLOCKCLSTATE();
|
|
/*
|
|
* Loop around waiting for:
|
|
* - outstanding I/O operations on delegations to complete
|
|
* - for a delegation on fvp that has state, lock the client and
|
|
* do a recall
|
|
* - return delegation(s) with no state.
|
|
*/
|
|
while (1) {
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (retcnt);
|
|
}
|
|
np = VTONFS(fvp);
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
|
|
np->n_fhp->nfh_len);
|
|
if (dp != NULL && *gotfdp == 0) {
|
|
/*
|
|
* Wait for outstanding I/O ops to be done.
|
|
*/
|
|
if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
|
|
if (igotlock) {
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
igotlock = 0;
|
|
}
|
|
dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED;
|
|
(void) nfsmsleep(&dp->nfsdl_rwlock,
|
|
NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL);
|
|
continue;
|
|
}
|
|
needsrecall = 0;
|
|
LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
|
|
if (!LIST_EMPTY(&owp->nfsow_open)) {
|
|
needsrecall = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (!needsrecall) {
|
|
LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
|
|
if (!LIST_EMPTY(&lp->nfsl_lock)) {
|
|
needsrecall = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (needsrecall && !triedrecall) {
|
|
dp->nfsdl_flags |= NFSCLDL_DELEGRET;
|
|
islept = 0;
|
|
while (!igotlock) {
|
|
igotlock = nfsv4_lock(&clp->nfsc_lock, 1,
|
|
&islept, NFSCLSTATEMUTEXPTR, NULL);
|
|
if (islept)
|
|
break;
|
|
}
|
|
if (islept)
|
|
continue;
|
|
NFSUNLOCKCLSTATE();
|
|
cred = newnfs_getcred();
|
|
newnfs_copycred(&dp->nfsdl_cred, cred);
|
|
(void) nfscl_recalldeleg(clp, nmp, dp, fvp, cred, p, 0);
|
|
NFSFREECRED(cred);
|
|
triedrecall = 1;
|
|
NFSLOCKCLSTATE();
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
igotlock = 0;
|
|
continue;
|
|
}
|
|
*fstp = dp->nfsdl_stateid;
|
|
retcnt++;
|
|
*gotfdp = 1;
|
|
nfscl_cleandeleg(dp);
|
|
nfscl_freedeleg(&clp->nfsc_deleg, dp);
|
|
}
|
|
if (igotlock) {
|
|
nfsv4_unlock(&clp->nfsc_lock, 0);
|
|
igotlock = 0;
|
|
}
|
|
if (tvp != NULL) {
|
|
np = VTONFS(tvp);
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh,
|
|
np->n_fhp->nfh_len);
|
|
if (dp != NULL && *gottdp == 0) {
|
|
/*
|
|
* Wait for outstanding I/O ops to be done.
|
|
*/
|
|
if (dp->nfsdl_rwlock.nfslock_usecnt > 0) {
|
|
dp->nfsdl_rwlock.nfslock_lock |= NFSV4LOCK_WANTED;
|
|
(void) nfsmsleep(&dp->nfsdl_rwlock,
|
|
NFSCLSTATEMUTEXPTR, PZERO, "nfscld", NULL);
|
|
continue;
|
|
}
|
|
LIST_FOREACH(owp, &dp->nfsdl_owner, nfsow_list) {
|
|
if (!LIST_EMPTY(&owp->nfsow_open)) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (retcnt);
|
|
}
|
|
}
|
|
LIST_FOREACH(lp, &dp->nfsdl_lock, nfsl_list) {
|
|
if (!LIST_EMPTY(&lp->nfsl_lock)) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (retcnt);
|
|
}
|
|
}
|
|
*tstp = dp->nfsdl_stateid;
|
|
retcnt++;
|
|
*gottdp = 1;
|
|
nfscl_cleandeleg(dp);
|
|
nfscl_freedeleg(&clp->nfsc_deleg, dp);
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (retcnt);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get a reference on the clientid associated with the mount point.
|
|
* Return 1 if success, 0 otherwise.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_getref(struct nfsmount *nmp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
nfsv4_getref(&clp->nfsc_lock, NULL, NFSCLSTATEMUTEXPTR, NULL);
|
|
NFSUNLOCKCLSTATE();
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Release a reference on a clientid acquired with the above call.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_relref(struct nfsmount *nmp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return;
|
|
}
|
|
nfsv4_relref(&clp->nfsc_lock);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Save the size attribute in the delegation, since the nfsnode
|
|
* is going away.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_reclaimnode(vnode_t vp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct nfsmount *nmp;
|
|
|
|
nmp = VFSTONFS(vnode_mount(vp));
|
|
if (!NFSHASNFSV4(nmp))
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return;
|
|
}
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE))
|
|
dp->nfsdl_size = np->n_size;
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Get the saved size attribute in the delegation, since it is a
|
|
* newly allocated nfsnode.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_newnode(vnode_t vp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct nfsmount *nmp;
|
|
|
|
nmp = VFSTONFS(vnode_mount(vp));
|
|
if (!NFSHASNFSV4(nmp))
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return;
|
|
}
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE))
|
|
np->n_size = dp->nfsdl_size;
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* If there is a valid write delegation for this file, set the modtime
|
|
* to the local clock time.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_delegmodtime(vnode_t vp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct nfsmount *nmp;
|
|
|
|
nmp = VFSTONFS(vnode_mount(vp));
|
|
if (!NFSHASNFSV4(nmp))
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return;
|
|
}
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (dp != NULL && (dp->nfsdl_flags & NFSCLDL_WRITE)) {
|
|
nanotime(&dp->nfsdl_modtime);
|
|
dp->nfsdl_flags |= NFSCLDL_MODTIMESET;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* If there is a valid write delegation for this file with a modtime set,
|
|
* put that modtime in mtime.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_deleggetmodtime(vnode_t vp, struct timespec *mtime)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldeleg *dp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
struct nfsmount *nmp;
|
|
|
|
nmp = VFSTONFS(vnode_mount(vp));
|
|
if (!NFSHASNFSV4(nmp))
|
|
return;
|
|
NFSLOCKCLSTATE();
|
|
clp = nfscl_findcl(nmp);
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return;
|
|
}
|
|
dp = nfscl_finddeleg(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (dp != NULL &&
|
|
(dp->nfsdl_flags & (NFSCLDL_WRITE | NFSCLDL_MODTIMESET)) ==
|
|
(NFSCLDL_WRITE | NFSCLDL_MODTIMESET))
|
|
*mtime = dp->nfsdl_modtime;
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
static int
|
|
nfscl_errmap(struct nfsrv_descript *nd)
|
|
{
|
|
short *defaulterrp, *errp;
|
|
|
|
if (!nd->nd_repstat)
|
|
return (0);
|
|
if (nd->nd_procnum == NFSPROC_NOOP)
|
|
return (txdr_unsigned(nd->nd_repstat & 0xffff));
|
|
if (nd->nd_repstat == EBADRPC)
|
|
return (txdr_unsigned(NFSERR_BADXDR));
|
|
if (nd->nd_repstat == NFSERR_MINORVERMISMATCH ||
|
|
nd->nd_repstat == NFSERR_OPILLEGAL)
|
|
return (txdr_unsigned(nd->nd_repstat));
|
|
if (nd->nd_procnum < NFSV4OP_CBNOPS)
|
|
errp = defaulterrp = nfscl_cberrmap[nd->nd_procnum];
|
|
else
|
|
return (txdr_unsigned(nd->nd_repstat));
|
|
while (*++errp)
|
|
if (*errp == (short)nd->nd_repstat)
|
|
return (txdr_unsigned(nd->nd_repstat));
|
|
return (txdr_unsigned(*defaulterrp));
|
|
}
|
|
|
|
/*
|
|
* Called to find/add a layout to a client.
|
|
* This function returns the layout with a refcnt (shared lock) upon
|
|
* success (returns 0) or with no lock/refcnt on the layout when an
|
|
* error is returned.
|
|
* If a layout is passed in via lypp, it is locked (exclusively locked).
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_layout(struct nfsmount *nmp, vnode_t vp, u_int8_t *fhp, int fhlen,
|
|
nfsv4stateid_t *stateidp, int retonclose,
|
|
struct nfsclflayouthead *fhlp, struct nfscllayout **lypp,
|
|
struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscllayout *lyp, *tlyp;
|
|
struct nfsclflayout *flp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
mount_t mp;
|
|
int layout_passed_in;
|
|
|
|
mp = nmp->nm_mountp;
|
|
layout_passed_in = 1;
|
|
tlyp = NULL;
|
|
lyp = *lypp;
|
|
if (lyp == NULL) {
|
|
layout_passed_in = 0;
|
|
tlyp = malloc(sizeof(*tlyp) + fhlen - 1, M_NFSLAYOUT,
|
|
M_WAITOK | M_ZERO);
|
|
}
|
|
|
|
NFSLOCKCLSTATE();
|
|
clp = nmp->nm_clp;
|
|
if (clp == NULL) {
|
|
if (layout_passed_in != 0)
|
|
nfsv4_unlock(&lyp->nfsly_lock, 0);
|
|
NFSUNLOCKCLSTATE();
|
|
if (tlyp != NULL)
|
|
free(tlyp, M_NFSLAYOUT);
|
|
return (EPERM);
|
|
}
|
|
if (lyp == NULL) {
|
|
/*
|
|
* Although no lyp was passed in, another thread might have
|
|
* allocated one. If one is found, just increment it's ref
|
|
* count and return it.
|
|
*/
|
|
lyp = nfscl_findlayout(clp, fhp, fhlen);
|
|
if (lyp == NULL) {
|
|
lyp = tlyp;
|
|
tlyp = NULL;
|
|
lyp->nfsly_stateid.seqid = stateidp->seqid;
|
|
lyp->nfsly_stateid.other[0] = stateidp->other[0];
|
|
lyp->nfsly_stateid.other[1] = stateidp->other[1];
|
|
lyp->nfsly_stateid.other[2] = stateidp->other[2];
|
|
lyp->nfsly_lastbyte = 0;
|
|
LIST_INIT(&lyp->nfsly_flayread);
|
|
LIST_INIT(&lyp->nfsly_flayrw);
|
|
LIST_INIT(&lyp->nfsly_recall);
|
|
lyp->nfsly_filesid[0] = np->n_vattr.na_filesid[0];
|
|
lyp->nfsly_filesid[1] = np->n_vattr.na_filesid[1];
|
|
lyp->nfsly_clp = clp;
|
|
lyp->nfsly_flags = (retonclose != 0) ?
|
|
(NFSLY_FILES | NFSLY_RETONCLOSE) : NFSLY_FILES;
|
|
lyp->nfsly_fhlen = fhlen;
|
|
NFSBCOPY(fhp, lyp->nfsly_fh, fhlen);
|
|
TAILQ_INSERT_HEAD(&clp->nfsc_layout, lyp, nfsly_list);
|
|
LIST_INSERT_HEAD(NFSCLLAYOUTHASH(clp, fhp, fhlen), lyp,
|
|
nfsly_hash);
|
|
lyp->nfsly_timestamp = NFSD_MONOSEC + 120;
|
|
nfscl_layoutcnt++;
|
|
} else {
|
|
if (retonclose != 0)
|
|
lyp->nfsly_flags |= NFSLY_RETONCLOSE;
|
|
TAILQ_REMOVE(&clp->nfsc_layout, lyp, nfsly_list);
|
|
TAILQ_INSERT_HEAD(&clp->nfsc_layout, lyp, nfsly_list);
|
|
lyp->nfsly_timestamp = NFSD_MONOSEC + 120;
|
|
}
|
|
nfsv4_getref(&lyp->nfsly_lock, NULL, NFSCLSTATEMUTEXPTR, mp);
|
|
if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
|
|
NFSUNLOCKCLSTATE();
|
|
if (tlyp != NULL)
|
|
free(tlyp, M_NFSLAYOUT);
|
|
return (EPERM);
|
|
}
|
|
*lypp = lyp;
|
|
} else
|
|
lyp->nfsly_stateid.seqid = stateidp->seqid;
|
|
|
|
/* Merge the new list of File Layouts into the list. */
|
|
flp = LIST_FIRST(fhlp);
|
|
if (flp != NULL) {
|
|
if (flp->nfsfl_iomode == NFSLAYOUTIOMODE_READ)
|
|
nfscl_mergeflayouts(&lyp->nfsly_flayread, fhlp);
|
|
else
|
|
nfscl_mergeflayouts(&lyp->nfsly_flayrw, fhlp);
|
|
}
|
|
if (layout_passed_in != 0)
|
|
nfsv4_unlock(&lyp->nfsly_lock, 1);
|
|
NFSUNLOCKCLSTATE();
|
|
if (tlyp != NULL)
|
|
free(tlyp, M_NFSLAYOUT);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Search for a layout by MDS file handle.
|
|
* If one is found, it is returned with a refcnt (shared lock) iff
|
|
* retflpp returned non-NULL and locked (exclusive locked) iff retflpp is
|
|
* returned NULL.
|
|
*/
|
|
struct nfscllayout *
|
|
nfscl_getlayout(struct nfsclclient *clp, uint8_t *fhp, int fhlen,
|
|
uint64_t off, struct nfsclflayout **retflpp, int *recalledp)
|
|
{
|
|
struct nfscllayout *lyp;
|
|
mount_t mp;
|
|
int error, igotlock;
|
|
|
|
mp = clp->nfsc_nmp->nm_mountp;
|
|
*recalledp = 0;
|
|
*retflpp = NULL;
|
|
NFSLOCKCLSTATE();
|
|
lyp = nfscl_findlayout(clp, fhp, fhlen);
|
|
if (lyp != NULL) {
|
|
if ((lyp->nfsly_flags & NFSLY_RECALL) == 0) {
|
|
TAILQ_REMOVE(&clp->nfsc_layout, lyp, nfsly_list);
|
|
TAILQ_INSERT_HEAD(&clp->nfsc_layout, lyp, nfsly_list);
|
|
lyp->nfsly_timestamp = NFSD_MONOSEC + 120;
|
|
error = nfscl_findlayoutforio(lyp, off,
|
|
NFSV4OPEN_ACCESSREAD, retflpp);
|
|
if (error == 0)
|
|
nfsv4_getref(&lyp->nfsly_lock, NULL,
|
|
NFSCLSTATEMUTEXPTR, mp);
|
|
else {
|
|
do {
|
|
igotlock = nfsv4_lock(&lyp->nfsly_lock,
|
|
1, NULL, NFSCLSTATEMUTEXPTR, mp);
|
|
} while (igotlock == 0 &&
|
|
(mp->mnt_kern_flag & MNTK_UNMOUNTF) == 0);
|
|
*retflpp = NULL;
|
|
}
|
|
if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
|
|
lyp = NULL;
|
|
*recalledp = 1;
|
|
}
|
|
} else {
|
|
lyp = NULL;
|
|
*recalledp = 1;
|
|
}
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
return (lyp);
|
|
}
|
|
|
|
/*
|
|
* Search for a layout by MDS file handle. If one is found that is marked
|
|
* "return on close", delete it, since it should now be forgotten.
|
|
*/
|
|
static void
|
|
nfscl_retoncloselayout(struct nfsclclient *clp, uint8_t *fhp, int fhlen)
|
|
{
|
|
struct nfscllayout *lyp;
|
|
|
|
tryagain:
|
|
lyp = nfscl_findlayout(clp, fhp, fhlen);
|
|
if (lyp != NULL && (lyp->nfsly_flags & NFSLY_RETONCLOSE) != 0) {
|
|
/*
|
|
* Wait for outstanding I/O ops to be done.
|
|
*/
|
|
if (lyp->nfsly_lock.nfslock_usecnt != 0 ||
|
|
lyp->nfsly_lock.nfslock_lock != 0) {
|
|
lyp->nfsly_lock.nfslock_lock |= NFSV4LOCK_WANTED;
|
|
(void)mtx_sleep(&lyp->nfsly_lock,
|
|
NFSCLSTATEMUTEXPTR, PZERO, "nfslyc", 0);
|
|
goto tryagain;
|
|
}
|
|
nfscl_freelayout(lyp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Dereference a layout.
|
|
*/
|
|
void
|
|
nfscl_rellayout(struct nfscllayout *lyp, int exclocked)
|
|
{
|
|
|
|
NFSLOCKCLSTATE();
|
|
if (exclocked != 0)
|
|
nfsv4_unlock(&lyp->nfsly_lock, 0);
|
|
else
|
|
nfsv4_relref(&lyp->nfsly_lock);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Search for a devinfo by deviceid. If one is found, return it after
|
|
* acquiring a reference count on it.
|
|
*/
|
|
struct nfscldevinfo *
|
|
nfscl_getdevinfo(struct nfsclclient *clp, uint8_t *deviceid,
|
|
struct nfscldevinfo *dip)
|
|
{
|
|
|
|
NFSLOCKCLSTATE();
|
|
if (dip == NULL)
|
|
dip = nfscl_finddevinfo(clp, deviceid);
|
|
if (dip != NULL)
|
|
dip->nfsdi_refcnt++;
|
|
NFSUNLOCKCLSTATE();
|
|
return (dip);
|
|
}
|
|
|
|
/*
|
|
* Dereference a devinfo structure.
|
|
*/
|
|
static void
|
|
nfscl_reldevinfo_locked(struct nfscldevinfo *dip)
|
|
{
|
|
|
|
dip->nfsdi_refcnt--;
|
|
if (dip->nfsdi_refcnt == 0)
|
|
wakeup(&dip->nfsdi_refcnt);
|
|
}
|
|
|
|
/*
|
|
* Dereference a devinfo structure.
|
|
*/
|
|
void
|
|
nfscl_reldevinfo(struct nfscldevinfo *dip)
|
|
{
|
|
|
|
NFSLOCKCLSTATE();
|
|
nfscl_reldevinfo_locked(dip);
|
|
NFSUNLOCKCLSTATE();
|
|
}
|
|
|
|
/*
|
|
* Find a layout for this file handle. Return NULL upon failure.
|
|
*/
|
|
static struct nfscllayout *
|
|
nfscl_findlayout(struct nfsclclient *clp, u_int8_t *fhp, int fhlen)
|
|
{
|
|
struct nfscllayout *lyp;
|
|
|
|
LIST_FOREACH(lyp, NFSCLLAYOUTHASH(clp, fhp, fhlen), nfsly_hash)
|
|
if (lyp->nfsly_fhlen == fhlen &&
|
|
!NFSBCMP(lyp->nfsly_fh, fhp, fhlen))
|
|
break;
|
|
return (lyp);
|
|
}
|
|
|
|
/*
|
|
* Find a devinfo for this deviceid. Return NULL upon failure.
|
|
*/
|
|
static struct nfscldevinfo *
|
|
nfscl_finddevinfo(struct nfsclclient *clp, uint8_t *deviceid)
|
|
{
|
|
struct nfscldevinfo *dip;
|
|
|
|
LIST_FOREACH(dip, &clp->nfsc_devinfo, nfsdi_list)
|
|
if (NFSBCMP(dip->nfsdi_deviceid, deviceid, NFSX_V4DEVICEID)
|
|
== 0)
|
|
break;
|
|
return (dip);
|
|
}
|
|
|
|
/*
|
|
* Merge the new file layout list into the main one, maintaining it in
|
|
* increasing offset order.
|
|
*/
|
|
static void
|
|
nfscl_mergeflayouts(struct nfsclflayouthead *fhlp,
|
|
struct nfsclflayouthead *newfhlp)
|
|
{
|
|
struct nfsclflayout *flp, *nflp, *prevflp, *tflp;
|
|
|
|
flp = LIST_FIRST(fhlp);
|
|
prevflp = NULL;
|
|
LIST_FOREACH_SAFE(nflp, newfhlp, nfsfl_list, tflp) {
|
|
while (flp != NULL && flp->nfsfl_off < nflp->nfsfl_off) {
|
|
prevflp = flp;
|
|
flp = LIST_NEXT(flp, nfsfl_list);
|
|
}
|
|
if (prevflp == NULL)
|
|
LIST_INSERT_HEAD(fhlp, nflp, nfsfl_list);
|
|
else
|
|
LIST_INSERT_AFTER(prevflp, nflp, nfsfl_list);
|
|
prevflp = nflp;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add this nfscldevinfo to the client, if it doesn't already exist.
|
|
* This function consumes the structure pointed at by dip, if not NULL.
|
|
*/
|
|
APPLESTATIC int
|
|
nfscl_adddevinfo(struct nfsmount *nmp, struct nfscldevinfo *dip,
|
|
struct nfsclflayout *flp)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscldevinfo *tdip;
|
|
|
|
NFSLOCKCLSTATE();
|
|
clp = nmp->nm_clp;
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
if (dip != NULL)
|
|
free(dip, M_NFSDEVINFO);
|
|
return (ENODEV);
|
|
}
|
|
tdip = nfscl_finddevinfo(clp, flp->nfsfl_dev);
|
|
if (tdip != NULL) {
|
|
tdip->nfsdi_layoutrefs++;
|
|
flp->nfsfl_devp = tdip;
|
|
nfscl_reldevinfo_locked(tdip);
|
|
NFSUNLOCKCLSTATE();
|
|
if (dip != NULL)
|
|
free(dip, M_NFSDEVINFO);
|
|
return (0);
|
|
}
|
|
if (dip != NULL) {
|
|
LIST_INSERT_HEAD(&clp->nfsc_devinfo, dip, nfsdi_list);
|
|
dip->nfsdi_layoutrefs = 1;
|
|
flp->nfsfl_devp = dip;
|
|
}
|
|
NFSUNLOCKCLSTATE();
|
|
if (dip == NULL)
|
|
return (ENODEV);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Free up a layout structure and associated file layout structure(s).
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_freelayout(struct nfscllayout *layp)
|
|
{
|
|
struct nfsclflayout *flp, *nflp;
|
|
struct nfsclrecalllayout *rp, *nrp;
|
|
|
|
LIST_FOREACH_SAFE(flp, &layp->nfsly_flayread, nfsfl_list, nflp) {
|
|
LIST_REMOVE(flp, nfsfl_list);
|
|
nfscl_freeflayout(flp);
|
|
}
|
|
LIST_FOREACH_SAFE(flp, &layp->nfsly_flayrw, nfsfl_list, nflp) {
|
|
LIST_REMOVE(flp, nfsfl_list);
|
|
nfscl_freeflayout(flp);
|
|
}
|
|
LIST_FOREACH_SAFE(rp, &layp->nfsly_recall, nfsrecly_list, nrp) {
|
|
LIST_REMOVE(rp, nfsrecly_list);
|
|
free(rp, M_NFSLAYRECALL);
|
|
}
|
|
nfscl_layoutcnt--;
|
|
free(layp, M_NFSLAYOUT);
|
|
}
|
|
|
|
/*
|
|
* Free up a file layout structure.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_freeflayout(struct nfsclflayout *flp)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < flp->nfsfl_fhcnt; i++)
|
|
free(flp->nfsfl_fh[i], M_NFSFH);
|
|
if (flp->nfsfl_devp != NULL)
|
|
flp->nfsfl_devp->nfsdi_layoutrefs--;
|
|
free(flp, M_NFSFLAYOUT);
|
|
}
|
|
|
|
/*
|
|
* Free up a file layout devinfo structure.
|
|
*/
|
|
APPLESTATIC void
|
|
nfscl_freedevinfo(struct nfscldevinfo *dip)
|
|
{
|
|
|
|
free(dip, M_NFSDEVINFO);
|
|
}
|
|
|
|
/*
|
|
* Mark any layouts that match as recalled.
|
|
*/
|
|
static int
|
|
nfscl_layoutrecall(int recalltype, struct nfscllayout *lyp, uint32_t iomode,
|
|
uint64_t off, uint64_t len, uint32_t stateseqid,
|
|
struct nfsclrecalllayout *recallp)
|
|
{
|
|
struct nfsclrecalllayout *rp, *orp;
|
|
|
|
recallp->nfsrecly_recalltype = recalltype;
|
|
recallp->nfsrecly_iomode = iomode;
|
|
recallp->nfsrecly_stateseqid = stateseqid;
|
|
recallp->nfsrecly_off = off;
|
|
recallp->nfsrecly_len = len;
|
|
/*
|
|
* Order the list as file returns first, followed by fsid and any
|
|
* returns, both in increasing stateseqid order.
|
|
* Note that the seqids wrap around, so 1 is after 0xffffffff.
|
|
* (I'm not sure this is correct because I find RFC5661 confusing
|
|
* on this, but hopefully it will work ok.)
|
|
*/
|
|
orp = NULL;
|
|
LIST_FOREACH(rp, &lyp->nfsly_recall, nfsrecly_list) {
|
|
orp = rp;
|
|
if ((recalltype == NFSLAYOUTRETURN_FILE &&
|
|
(rp->nfsrecly_recalltype != NFSLAYOUTRETURN_FILE ||
|
|
nfscl_seq(stateseqid, rp->nfsrecly_stateseqid) != 0)) ||
|
|
(recalltype != NFSLAYOUTRETURN_FILE &&
|
|
rp->nfsrecly_recalltype != NFSLAYOUTRETURN_FILE &&
|
|
nfscl_seq(stateseqid, rp->nfsrecly_stateseqid) != 0)) {
|
|
LIST_INSERT_BEFORE(rp, recallp, nfsrecly_list);
|
|
break;
|
|
}
|
|
}
|
|
if (rp == NULL) {
|
|
if (orp == NULL)
|
|
LIST_INSERT_HEAD(&lyp->nfsly_recall, recallp,
|
|
nfsrecly_list);
|
|
else
|
|
LIST_INSERT_AFTER(orp, recallp, nfsrecly_list);
|
|
}
|
|
lyp->nfsly_flags |= NFSLY_RECALL;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Compare the two seqids for ordering. The trick is that the seqids can
|
|
* wrap around from 0xffffffff->0, so check for the cases where one
|
|
* has wrapped around.
|
|
* Return 1 if seqid1 comes before seqid2, 0 otherwise.
|
|
*/
|
|
static int
|
|
nfscl_seq(uint32_t seqid1, uint32_t seqid2)
|
|
{
|
|
|
|
if (seqid2 > seqid1 && (seqid2 - seqid1) >= 0x7fffffff)
|
|
/* seqid2 has wrapped around. */
|
|
return (0);
|
|
if (seqid1 > seqid2 && (seqid1 - seqid2) >= 0x7fffffff)
|
|
/* seqid1 has wrapped around. */
|
|
return (1);
|
|
if (seqid1 <= seqid2)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Do a layout return for each of the recalls.
|
|
*/
|
|
static void
|
|
nfscl_layoutreturn(struct nfsmount *nmp, struct nfscllayout *lyp,
|
|
struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
struct nfsclrecalllayout *rp;
|
|
nfsv4stateid_t stateid;
|
|
|
|
NFSBCOPY(lyp->nfsly_stateid.other, stateid.other, NFSX_STATEIDOTHER);
|
|
LIST_FOREACH(rp, &lyp->nfsly_recall, nfsrecly_list) {
|
|
stateid.seqid = rp->nfsrecly_stateseqid;
|
|
(void)nfsrpc_layoutreturn(nmp, lyp->nfsly_fh,
|
|
lyp->nfsly_fhlen, 0, NFSLAYOUT_NFSV4_1_FILES,
|
|
rp->nfsrecly_iomode, rp->nfsrecly_recalltype,
|
|
rp->nfsrecly_off, rp->nfsrecly_len,
|
|
&stateid, 0, NULL, cred, p, NULL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Do the layout commit for a file layout.
|
|
*/
|
|
static void
|
|
nfscl_dolayoutcommit(struct nfsmount *nmp, struct nfscllayout *lyp,
|
|
struct ucred *cred, NFSPROC_T *p)
|
|
{
|
|
int error;
|
|
|
|
error = nfsrpc_layoutcommit(nmp, lyp->nfsly_fh, lyp->nfsly_fhlen,
|
|
0, 0, 0, lyp->nfsly_lastbyte, &lyp->nfsly_stateid,
|
|
NFSLAYOUT_NFSV4_1_FILES, 0, NULL, cred, p, NULL);
|
|
if (error == NFSERR_NOTSUPP) {
|
|
/* If the server doesn't want it, don't bother doing it. */
|
|
NFSLOCKMNT(nmp);
|
|
nmp->nm_state |= NFSSTA_NOLAYOUTCOMMIT;
|
|
NFSUNLOCKMNT(nmp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Commit all layouts for a file (vnode).
|
|
*/
|
|
int
|
|
nfscl_layoutcommit(vnode_t vp, NFSPROC_T *p)
|
|
{
|
|
struct nfsclclient *clp;
|
|
struct nfscllayout *lyp;
|
|
struct nfsnode *np = VTONFS(vp);
|
|
mount_t mp;
|
|
struct nfsmount *nmp;
|
|
|
|
mp = vnode_mount(vp);
|
|
nmp = VFSTONFS(mp);
|
|
if (NFSHASNOLAYOUTCOMMIT(nmp))
|
|
return (0);
|
|
NFSLOCKCLSTATE();
|
|
clp = nmp->nm_clp;
|
|
if (clp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (EPERM);
|
|
}
|
|
lyp = nfscl_findlayout(clp, np->n_fhp->nfh_fh, np->n_fhp->nfh_len);
|
|
if (lyp == NULL) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (EPERM);
|
|
}
|
|
nfsv4_getref(&lyp->nfsly_lock, NULL, NFSCLSTATEMUTEXPTR, mp);
|
|
if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
|
|
NFSUNLOCKCLSTATE();
|
|
return (EPERM);
|
|
}
|
|
tryagain:
|
|
if ((lyp->nfsly_flags & NFSLY_WRITTEN) != 0) {
|
|
lyp->nfsly_flags &= ~NFSLY_WRITTEN;
|
|
NFSUNLOCKCLSTATE();
|
|
NFSCL_DEBUG(4, "do layoutcommit2\n");
|
|
nfscl_dolayoutcommit(clp->nfsc_nmp, lyp, NFSPROCCRED(p), p);
|
|
NFSLOCKCLSTATE();
|
|
goto tryagain;
|
|
}
|
|
nfsv4_relref(&lyp->nfsly_lock);
|
|
NFSUNLOCKCLSTATE();
|
|
return (0);
|
|
}
|
|
|