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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-07 14:24:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-07 14:24:41 -0700
commit0d9f9e122c74583de15a86d1c660c08dc298f2c8 (patch)
treea04ad387e231db43db112753fa2eae23754189a9 /fs/nfsd/nfs4state.c
parentdf44f9f4f9b5d362b5a2d1c8444fe7e6d4c42653 (diff)
parent998db52c03cd293d16a457f1b396cea932244147 (diff)
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Merge branch 'for-2.6.36' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.36' of git://linux-nfs.org/~bfields/linux: (34 commits) nfsd4: fix file open accounting for RDWR opens nfsd: don't allow setting maxblksize after svc created nfsd: initialize nfsd versions before creating svc net: sunrpc: removed duplicated #include nfsd41: Fix a crash when a callback is retried nfsd: fix startup/shutdown order bug nfsd: minor nfsd read api cleanup gcc-4.6: nfsd: fix initialized but not read warnings nfsd4: share file descriptors between stateid's nfsd4: fix openmode checking on IO using lock stateid nfsd4: miscellaneous process_open2 cleanup nfsd4: don't pretend to support write delegations nfsd: bypass readahead cache when have struct file nfsd: minor nfsd_svc() cleanup nfsd: move more into nfsd_startup() nfsd: just keep single lockd reference for nfsd nfsd: clean up nfsd_create_serv error handling nfsd: fix error handling in __write_ports_addxprt nfsd: fix error handling when starting nfsd with rpcbind down nfsd4: fix v4 state shutdown error paths ...
Diffstat (limited to 'fs/nfsd/nfs4state.c')
-rw-r--r--fs/nfsd/nfs4state.c381
1 files changed, 235 insertions, 146 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 4a273475877..2e7357104cf 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -51,7 +51,6 @@ static time_t boot_time;
static u32 current_ownerid = 1;
static u32 current_fileid = 1;
static u32 current_delegid = 1;
-static u32 nfs4_init;
static stateid_t zerostateid; /* bits all 0 */
static stateid_t onestateid; /* bits all 1 */
static u64 current_sessionid = 1;
@@ -163,6 +162,46 @@ static struct list_head ownerstr_hashtbl[OWNER_HASH_SIZE];
static struct list_head file_hashtbl[FILE_HASH_SIZE];
static struct list_head stateid_hashtbl[STATEID_HASH_SIZE];
+static void __nfs4_file_get_access(struct nfs4_file *fp, int oflag)
+{
+ BUG_ON(!(fp->fi_fds[oflag] || fp->fi_fds[O_RDWR]));
+ atomic_inc(&fp->fi_access[oflag]);
+}
+
+static void nfs4_file_get_access(struct nfs4_file *fp, int oflag)
+{
+ if (oflag == O_RDWR) {
+ __nfs4_file_get_access(fp, O_RDONLY);
+ __nfs4_file_get_access(fp, O_WRONLY);
+ } else
+ __nfs4_file_get_access(fp, oflag);
+}
+
+static void nfs4_file_put_fd(struct nfs4_file *fp, int oflag)
+{
+ if (fp->fi_fds[oflag]) {
+ fput(fp->fi_fds[oflag]);
+ fp->fi_fds[oflag] = NULL;
+ }
+}
+
+static void __nfs4_file_put_access(struct nfs4_file *fp, int oflag)
+{
+ if (atomic_dec_and_test(&fp->fi_access[oflag])) {
+ nfs4_file_put_fd(fp, O_RDWR);
+ nfs4_file_put_fd(fp, oflag);
+ }
+}
+
+static void nfs4_file_put_access(struct nfs4_file *fp, int oflag)
+{
+ if (oflag == O_RDWR) {
+ __nfs4_file_put_access(fp, O_RDONLY);
+ __nfs4_file_put_access(fp, O_WRONLY);
+ } else
+ __nfs4_file_put_access(fp, oflag);
+}
+
static struct nfs4_delegation *
alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_fh *current_fh, u32 type)
{
@@ -171,6 +210,13 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
struct nfs4_cb_conn *cb = &stp->st_stateowner->so_client->cl_cb_conn;
dprintk("NFSD alloc_init_deleg\n");
+ /*
+ * Major work on the lease subsystem (for example, to support
+ * calbacks on stat) will be required before we can support
+ * write delegations properly.
+ */
+ if (type != NFS4_OPEN_DELEGATE_READ)
+ return NULL;
if (fp->fi_had_conflict)
return NULL;
if (num_delegations > max_delegations)
@@ -185,9 +231,8 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
dp->dl_client = clp;
get_nfs4_file(fp);
dp->dl_file = fp;
+ nfs4_file_get_access(fp, O_RDONLY);
dp->dl_flock = NULL;
- get_file(stp->st_vfs_file);
- dp->dl_vfs_file = stp->st_vfs_file;
dp->dl_type = type;
dp->dl_ident = cb->cb_ident;
dp->dl_stateid.si_boot = boot_time;
@@ -222,15 +267,12 @@ nfs4_put_delegation(struct nfs4_delegation *dp)
static void
nfs4_close_delegation(struct nfs4_delegation *dp)
{
- struct file *filp = dp->dl_vfs_file;
+ struct file *filp = find_readable_file(dp->dl_file);
dprintk("NFSD: close_delegation dp %p\n",dp);
- dp->dl_vfs_file = NULL;
- /* The following nfsd_close may not actually close the file,
- * but we want to remove the lease in any case. */
if (dp->dl_flock)
vfs_setlease(filp, F_UNLCK, &dp->dl_flock);
- nfsd_close(filp);
+ nfs4_file_put_access(dp->dl_file, O_RDONLY);
}
/* Called under the state lock. */
@@ -302,8 +344,12 @@ static void free_generic_stateid(struct nfs4_stateid *stp)
static void release_lock_stateid(struct nfs4_stateid *stp)
{
+ struct file *file;
+
unhash_generic_stateid(stp);
- locks_remove_posix(stp->st_vfs_file, (fl_owner_t)stp->st_stateowner);
+ file = find_any_file(stp->st_file);
+ if (file)
+ locks_remove_posix(file, (fl_owner_t)stp->st_stateowner);
free_generic_stateid(stp);
}
@@ -341,11 +387,85 @@ release_stateid_lockowners(struct nfs4_stateid *open_stp)
}
}
+/*
+ * We store the NONE, READ, WRITE, and BOTH bits separately in the
+ * st_{access,deny}_bmap field of the stateid, in order to track not
+ * only what share bits are currently in force, but also what
+ * combinations of share bits previous opens have used. This allows us
+ * to enforce the recommendation of rfc 3530 14.2.19 that the server
+ * return an error if the client attempt to downgrade to a combination
+ * of share bits not explicable by closing some of its previous opens.
+ *
+ * XXX: This enforcement is actually incomplete, since we don't keep
+ * track of access/deny bit combinations; so, e.g., we allow:
+ *
+ * OPEN allow read, deny write
+ * OPEN allow both, deny none
+ * DOWNGRADE allow read, deny none
+ *
+ * which we should reject.
+ */
+static void
+set_access(unsigned int *access, unsigned long bmap) {
+ int i;
+
+ *access = 0;
+ for (i = 1; i < 4; i++) {
+ if (test_bit(i, &bmap))
+ *access |= i;
+ }
+}
+
+static void
+set_deny(unsigned int *deny, unsigned long bmap) {
+ int i;
+
+ *deny = 0;
+ for (i = 0; i < 4; i++) {
+ if (test_bit(i, &bmap))
+ *deny |= i ;
+ }
+}
+
+static int
+test_share(struct nfs4_stateid *stp, struct nfsd4_open *open) {
+ unsigned int access, deny;
+
+ set_access(&access, stp->st_access_bmap);
+ set_deny(&deny, stp->st_deny_bmap);
+ if ((access & open->op_share_deny) || (deny & open->op_share_access))
+ return 0;
+ return 1;
+}
+
+static int nfs4_access_to_omode(u32 access)
+{
+ switch (access) {
+ case NFS4_SHARE_ACCESS_READ:
+ return O_RDONLY;
+ case NFS4_SHARE_ACCESS_WRITE:
+ return O_WRONLY;
+ case NFS4_SHARE_ACCESS_BOTH:
+ return O_RDWR;
+ }
+ BUG();
+}
+
+static int nfs4_access_bmap_to_omode(struct nfs4_stateid *stp)
+{
+ unsigned int access;
+
+ set_access(&access, stp->st_access_bmap);
+ return nfs4_access_to_omode(access);
+}
+
static void release_open_stateid(struct nfs4_stateid *stp)
{
+ int oflag = nfs4_access_bmap_to_omode(stp);
+
unhash_generic_stateid(stp);
release_stateid_lockowners(stp);
- nfsd_close(stp->st_vfs_file);
+ nfs4_file_put_access(stp->st_file, oflag);
free_generic_stateid(stp);
}
@@ -457,7 +577,7 @@ static int set_forechannel_drc_size(struct nfsd4_channel_attrs *fchan)
spin_unlock(&nfsd_drc_lock);
if (fchan->maxreqs == 0)
- return nfserr_serverfault;
+ return nfserr_jukebox;
fchan->maxresp_cached = size + NFSD_MIN_HDR_SEQ_SZ;
return 0;
@@ -542,7 +662,7 @@ alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
BUILD_BUG_ON(NFSD_MAX_SLOTS_PER_SESSION * sizeof(struct nfsd4_slot)
+ sizeof(struct nfsd4_session) > PAGE_SIZE);
- status = nfserr_serverfault;
+ status = nfserr_jukebox;
/* allocate struct nfsd4_session and slot table pointers in one piece */
slotsize = tmp.se_fchannel.maxreqs * sizeof(struct nfsd4_slot *);
new = kzalloc(sizeof(*new) + slotsize, GFP_KERNEL);
@@ -591,10 +711,8 @@ find_in_sessionid_hashtbl(struct nfs4_sessionid *sessionid)
dump_sessionid(__func__, sessionid);
idx = hash_sessionid(sessionid);
- dprintk("%s: idx is %d\n", __func__, idx);
/* Search in the appropriate list */
list_for_each_entry(elem, &sessionid_hashtbl[idx], se_hash) {
- dump_sessionid("list traversal", &elem->se_sessionid);
if (!memcmp(elem->se_sessionid.data, sessionid->data,
NFS4_MAX_SESSIONID_LEN)) {
return elem;
@@ -714,7 +832,6 @@ release_session_client(struct nfsd4_session *session)
} else
renew_client_locked(clp);
spin_unlock(&client_lock);
- nfsd4_put_session(session);
}
/* must be called under the client_lock */
@@ -1220,7 +1337,7 @@ out_new:
/* Normal case */
new = create_client(exid->clname, dname, rqstp, &verf);
if (new == NULL) {
- status = nfserr_serverfault;
+ status = nfserr_jukebox;
goto out;
}
@@ -1760,6 +1877,8 @@ alloc_init_file(struct inode *ino)
fp->fi_inode = igrab(ino);
fp->fi_id = current_fileid++;
fp->fi_had_conflict = false;
+ memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
+ memset(fp->fi_access, 0, sizeof(fp->fi_access));
spin_lock(&recall_lock);
list_add(&fp->fi_hash, &file_hashtbl[hashval]);
spin_unlock(&recall_lock);
@@ -1971,57 +2090,6 @@ static inline int deny_valid(u32 x)
}
/*
- * We store the NONE, READ, WRITE, and BOTH bits separately in the
- * st_{access,deny}_bmap field of the stateid, in order to track not
- * only what share bits are currently in force, but also what
- * combinations of share bits previous opens have used. This allows us
- * to enforce the recommendation of rfc 3530 14.2.19 that the server
- * return an error if the client attempt to downgrade to a combination
- * of share bits not explicable by closing some of its previous opens.
- *
- * XXX: This enforcement is actually incomplete, since we don't keep
- * track of access/deny bit combinations; so, e.g., we allow:
- *
- * OPEN allow read, deny write
- * OPEN allow both, deny none
- * DOWNGRADE allow read, deny none
- *
- * which we should reject.
- */
-static void
-set_access(unsigned int *access, unsigned long bmap) {
- int i;
-
- *access = 0;
- for (i = 1; i < 4; i++) {
- if (test_bit(i, &bmap))
- *access |= i;
- }
-}
-
-static void
-set_deny(unsigned int *deny, unsigned long bmap) {
- int i;
-
- *deny = 0;
- for (i = 0; i < 4; i++) {
- if (test_bit(i, &bmap))
- *deny |= i ;
- }
-}
-
-static int
-test_share(struct nfs4_stateid *stp, struct nfsd4_open *open) {
- unsigned int access, deny;
-
- set_access(&access, stp->st_access_bmap);
- set_deny(&deny, stp->st_deny_bmap);
- if ((access & open->op_share_deny) || (deny & open->op_share_access))
- return 0;
- return 1;
-}
-
-/*
* Called to check deny when READ with all zero stateid or
* WRITE with all zero or all one stateid
*/
@@ -2052,14 +2120,12 @@ out:
}
static inline void
-nfs4_file_downgrade(struct file *filp, unsigned int share_access)
+nfs4_file_downgrade(struct nfs4_file *fp, unsigned int share_access)
{
- if (share_access & NFS4_SHARE_ACCESS_WRITE) {
- drop_file_write_access(filp);
- spin_lock(&filp->f_lock);
- filp->f_mode = (filp->f_mode | FMODE_READ) & ~FMODE_WRITE;
- spin_unlock(&filp->f_lock);
- }
+ if (share_access & NFS4_SHARE_ACCESS_WRITE)
+ nfs4_file_put_access(fp, O_WRONLY);
+ if (share_access & NFS4_SHARE_ACCESS_READ)
+ nfs4_file_put_access(fp, O_RDONLY);
}
/*
@@ -2255,6 +2321,13 @@ find_delegation_file(struct nfs4_file *fp, stateid_t *stid)
return NULL;
}
+int share_access_to_flags(u32 share_access)
+{
+ share_access &= ~NFS4_SHARE_WANT_MASK;
+
+ return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
+}
+
static __be32
nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open,
struct nfs4_delegation **dp)
@@ -2265,8 +2338,7 @@ nfs4_check_deleg(struct nfs4_file *fp, struct nfsd4_open *open,
*dp = find_delegation_file(fp, &open->op_delegate_stateid);
if (*dp == NULL)
goto out;
- flags = open->op_share_access == NFS4_SHARE_ACCESS_READ ?
- RD_STATE : WR_STATE;
+ flags = share_access_to_flags(open->op_share_access);
status = nfs4_check_delegmode(*dp, flags);
if (status)
*dp = NULL;
@@ -2308,30 +2380,53 @@ nfs4_alloc_stateid(void)
return kmem_cache_alloc(stateid_slab, GFP_KERNEL);
}
+static inline int nfs4_access_to_access(u32 nfs4_access)
+{
+ int flags = 0;
+
+ if (nfs4_access & NFS4_SHARE_ACCESS_READ)
+ flags |= NFSD_MAY_READ;
+ if (nfs4_access & NFS4_SHARE_ACCESS_WRITE)
+ flags |= NFSD_MAY_WRITE;
+ return flags;
+}
+
+static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file
+*fp, struct svc_fh *cur_fh, u32 nfs4_access)
+{
+ __be32 status;
+ int oflag = nfs4_access_to_omode(nfs4_access);
+ int access = nfs4_access_to_access(nfs4_access);
+
+ if (!fp->fi_fds[oflag]) {
+ status = nfsd_open(rqstp, cur_fh, S_IFREG, access,
+ &fp->fi_fds[oflag]);
+ if (status == nfserr_dropit)
+ status = nfserr_jukebox;
+ if (status)
+ return status;
+ }
+ nfs4_file_get_access(fp, oflag);
+
+ return nfs_ok;
+}
+
static __be32
nfs4_new_open(struct svc_rqst *rqstp, struct nfs4_stateid **stpp,
- struct nfs4_delegation *dp,
- struct svc_fh *cur_fh, int flags)
+ struct nfs4_file *fp, struct svc_fh *cur_fh,
+ struct nfsd4_open *open)
{
struct nfs4_stateid *stp;
+ __be32 status;
stp = nfs4_alloc_stateid();
if (stp == NULL)
return nfserr_resource;
- if (dp) {
- get_file(dp->dl_vfs_file);
- stp->st_vfs_file = dp->dl_vfs_file;
- } else {
- __be32 status;
- status = nfsd_open(rqstp, cur_fh, S_IFREG, flags,
- &stp->st_vfs_file);
- if (status) {
- if (status == nfserr_dropit)
- status = nfserr_jukebox;
- kmem_cache_free(stateid_slab, stp);
- return status;
- }
+ status = nfs4_get_vfs_file(rqstp, fp, cur_fh, open->op_share_access);
+ if (status) {
+ kmem_cache_free(stateid_slab, stp);
+ return status;
}
*stpp = stp;
return 0;
@@ -2353,35 +2448,30 @@ nfsd4_truncate(struct svc_rqst *rqstp, struct svc_fh *fh,
}
static __be32
-nfs4_upgrade_open(struct svc_rqst *rqstp, struct svc_fh *cur_fh, struct nfs4_stateid *stp, struct nfsd4_open *open)
+nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_stateid *stp, struct nfsd4_open *open)
{
- struct file *filp = stp->st_vfs_file;
- struct inode *inode = filp->f_path.dentry->d_inode;
- unsigned int share_access, new_writer;
+ u32 op_share_access, new_access;
__be32 status;
- set_access(&share_access, stp->st_access_bmap);
- new_writer = (~share_access) & open->op_share_access
- & NFS4_SHARE_ACCESS_WRITE;
-
- if (new_writer) {
- int err = get_write_access(inode);
- if (err)
- return nfserrno(err);
- err = mnt_want_write(cur_fh->fh_export->ex_path.mnt);
- if (err)
- return nfserrno(err);
- file_take_write(filp);
+ set_access(&new_access, stp->st_access_bmap);
+ new_access = (~new_access) & open->op_share_access & ~NFS4_SHARE_WANT_MASK;
+
+ if (new_access) {
+ status = nfs4_get_vfs_file(rqstp, fp, cur_fh, new_access);
+ if (status)
+ return status;
}
status = nfsd4_truncate(rqstp, cur_fh, open);
if (status) {
- if (new_writer)
- put_write_access(inode);
+ if (new_access) {
+ int oflag = nfs4_access_to_omode(new_access);
+ nfs4_file_put_access(fp, oflag);
+ }
return status;
}
/* remember the open */
- filp->f_mode |= open->op_share_access;
- __set_bit(open->op_share_access, &stp->st_access_bmap);
+ op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK;
+ __set_bit(op_share_access, &stp->st_access_bmap);
__set_bit(open->op_share_deny, &stp->st_deny_bmap);
return nfs_ok;
@@ -2444,13 +2534,14 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
fl.fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
fl.fl_end = OFFSET_MAX;
fl.fl_owner = (fl_owner_t)dp;
- fl.fl_file = stp->st_vfs_file;
+ fl.fl_file = find_readable_file(stp->st_file);
+ BUG_ON(!fl.fl_file);
fl.fl_pid = current->tgid;
/* vfs_setlease checks to see if delegation should be handed out.
* the lock_manager callbacks fl_mylease and fl_change are used
*/
- if ((status = vfs_setlease(stp->st_vfs_file, fl.fl_type, &flp))) {
+ if ((status = vfs_setlease(fl.fl_file, fl.fl_type, &flp))) {
dprintk("NFSD: setlease failed [%d], no delegation\n", status);
unhash_delegation(dp);
flag = NFS4_OPEN_DELEGATE_NONE;
@@ -2514,18 +2605,12 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
*/
if (stp) {
/* Stateid was found, this is an OPEN upgrade */
- status = nfs4_upgrade_open(rqstp, current_fh, stp, open);
+ status = nfs4_upgrade_open(rqstp, fp, current_fh, stp, open);
if (status)
goto out;
update_stateid(&stp->st_stateid);
} else {
- /* Stateid was not found, this is a new OPEN */
- int flags = 0;
- if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
- flags |= NFSD_MAY_READ;
- if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
- flags |= NFSD_MAY_WRITE;
- status = nfs4_new_open(rqstp, &stp, dp, current_fh, flags);
+ status = nfs4_new_open(rqstp, &stp, fp, current_fh, open);
if (status)
goto out;
init_stateid(stp, fp, open);
@@ -2727,7 +2812,7 @@ search_close_lru(u32 st_id, int flags)
static inline int
nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stateid *stp)
{
- return fhp->fh_dentry->d_inode != stp->st_vfs_file->f_path.dentry->d_inode;
+ return fhp->fh_dentry->d_inode != stp->st_file->fi_inode;
}
static int
@@ -2760,6 +2845,9 @@ __be32 nfs4_check_openmode(struct nfs4_stateid *stp, int flags)
{
__be32 status = nfserr_openmode;
+ /* For lock stateid's, we test the parent open, not the lock: */
+ if (stp->st_openstp)
+ stp = stp->st_openstp;
if ((flags & WR_STATE) && (!access_permit_write(stp->st_access_bmap)))
goto out;
if ((flags & RD_STATE) && (!access_permit_read(stp->st_access_bmap)))
@@ -2872,7 +2960,8 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
goto out;
renew_client(dp->dl_client);
if (filpp)
- *filpp = dp->dl_vfs_file;
+ *filpp = find_readable_file(dp->dl_file);
+ BUG_ON(!*filpp);
} else { /* open or lock stateid */
stp = find_stateid(stateid, flags);
if (!stp)
@@ -2889,8 +2978,13 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
if (status)
goto out;
renew_client(stp->st_stateowner->so_client);
- if (filpp)
- *filpp = stp->st_vfs_file;
+ if (filpp) {
+ if (flags & RD_STATE)
+ *filpp = find_readable_file(stp->st_file);
+ else
+ *filpp = find_writeable_file(stp->st_file);
+ BUG_ON(!*filpp); /* assured by check_openmode */
+ }
}
status = nfs_ok;
out:
@@ -3126,8 +3220,7 @@ nfsd4_open_downgrade(struct svc_rqst *rqstp,
goto out;
}
set_access(&share_access, stp->st_access_bmap);
- nfs4_file_downgrade(stp->st_vfs_file,
- share_access & ~od->od_share_access);
+ nfs4_file_downgrade(stp->st_file, share_access & ~od->od_share_access);
reset_union_bmap_access(od->od_share_access, &stp->st_access_bmap);
reset_union_bmap_deny(od->od_share_deny, &stp->st_deny_bmap);
@@ -3346,11 +3439,9 @@ static inline void
nfs4_set_lock_denied(struct file_lock *fl, struct nfsd4_lock_denied *deny)
{
struct nfs4_stateowner *sop;
- unsigned int hval;
if (fl->fl_lmops == &nfsd_posix_mng_ops) {
sop = (struct nfs4_stateowner *) fl->fl_owner;
- hval = lockownerid_hashval(sop->so_id);
kref_get(&sop->so_ref);
deny->ld_sop = sop;
deny->ld_clientid = sop->so_client->cl_clientid;
@@ -3446,8 +3537,6 @@ alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struc
stp->st_stateid.si_stateownerid = sop->so_id;
stp->st_stateid.si_fileid = fp->fi_id;
stp->st_stateid.si_generation = 0;
- stp->st_vfs_file = open_stp->st_vfs_file; /* FIXME refcount?? */
- stp->st_access_bmap = open_stp->st_access_bmap;
stp->st_deny_bmap = open_stp->st_deny_bmap;
stp->st_openstp = open_stp;
@@ -3547,7 +3636,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
lock_sop = lock->lk_replay_owner;
}
/* lock->lk_replay_owner and lock_stp have been created or found */
- filp = lock_stp->st_vfs_file;
status = nfserr_grace;
if (locks_in_grace() && !lock->lk_reclaim)
@@ -3560,11 +3648,13 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
switch (lock->lk_type) {
case NFS4_READ_LT:
case NFS4_READW_LT:
+ filp = find_readable_file(lock_stp->st_file);
file_lock.fl_type = F_RDLCK;
cmd = F_SETLK;
break;
case NFS4_WRITE_LT:
case NFS4_WRITEW_LT:
+ filp = find_writeable_file(lock_stp->st_file);
file_lock.fl_type = F_WRLCK;
cmd = F_SETLK;
break;
@@ -3572,6 +3662,10 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
status = nfserr_inval;
goto out;
}
+ if (!filp) {
+ status = nfserr_openmode;
+ goto out;
+ }
file_lock.fl_owner = (fl_owner_t)lock_sop;
file_lock.fl_pid = current->tgid;
file_lock.fl_file = filp;
@@ -3740,7 +3834,11 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
&locku->lu_stateowner, &stp, NULL)))
goto out;
- filp = stp->st_vfs_file;
+ filp = find_any_file(stp->st_file);
+ if (!filp) {
+ status = nfserr_lock_range;
+ goto out;
+ }
BUG_ON(!filp);
locks_init_lock(&file_lock);
file_lock.fl_type = F_UNLCK;
@@ -3787,10 +3885,10 @@ out_nfserr:
* 0: no locks held by lockowner
*/
static int
-check_for_locks(struct file *filp, struct nfs4_stateowner *lowner)
+check_for_locks(struct nfs4_file *filp, struct nfs4_stateowner *lowner)
{
struct file_lock **flpp;
- struct inode *inode = filp->f_path.dentry->d_inode;
+ struct inode *inode = filp->fi_inode;
int status = 0;
lock_kernel();
@@ -3841,7 +3939,7 @@ nfsd4_release_lockowner(struct svc_rqst *rqstp,
continue;
list_for_each_entry(stp, &sop->so_stateids,
st_perstateowner) {
- if (check_for_locks(stp->st_vfs_file, sop))
+ if (check_for_locks(stp->st_file, sop))
goto out;
/* Note: so_perclient unused for lockowners,
* so it's OK to fool with here. */
@@ -4066,16 +4164,8 @@ out_free_laundry:
int
nfs4_state_start(void)
{
- int ret;
-
- if (nfs4_init)
- return 0;
nfsd4_load_reboot_recovery_data();
- ret = __nfs4_state_start();
- if (ret)
- return ret;
- nfs4_init = 1;
- return 0;
+ return __nfs4_state_start();
}
static void
@@ -4110,7 +4200,6 @@ __nfs4_state_shutdown(void)
}
nfsd4_shutdown_recdir();
- nfs4_init = 0;
}
void