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-rw-r--r--fs/nfsd/nfs3proc.c8
-rw-r--r--fs/nfsd/nfs4callback.c57
-rw-r--r--fs/nfsd/nfs4state.c381
-rw-r--r--fs/nfsd/nfs4xdr.c3
-rw-r--r--fs/nfsd/nfsctl.c24
-rw-r--r--fs/nfsd/nfsd.h1
-rw-r--r--fs/nfsd/nfsproc.c4
-rw-r--r--fs/nfsd/nfssvc.c151
-rw-r--r--fs/nfsd/state.h40
-rw-r--r--fs/nfsd/vfs.c79
-rw-r--r--fs/nfsd/vfs.h4
11 files changed, 465 insertions, 287 deletions
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index 3d68f45a37b..5b7e3021e06 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -168,7 +168,7 @@ nfsd3_proc_read(struct svc_rqst *rqstp, struct nfsd3_readargs *argp,
svc_reserve_auth(rqstp, ((1 + NFS3_POST_OP_ATTR_WORDS + 3)<<2) + resp->count +4);
fh_copy(&resp->fh, &argp->fh);
- nfserr = nfsd_read(rqstp, &resp->fh, NULL,
+ nfserr = nfsd_read(rqstp, &resp->fh,
argp->offset,
rqstp->rq_vec, argp->vlen,
&resp->count);
@@ -271,7 +271,7 @@ nfsd3_proc_mkdir(struct svc_rqst *rqstp, struct nfsd3_createargs *argp,
fh_init(&resp->fh, NFS3_FHSIZE);
nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
&argp->attrs, S_IFDIR, 0, &resp->fh);
-
+ fh_unlock(&resp->dirfh);
RETURN_STATUS(nfserr);
}
@@ -327,7 +327,7 @@ nfsd3_proc_mknod(struct svc_rqst *rqstp, struct nfsd3_mknodargs *argp,
type = nfs3_ftypes[argp->ftype];
nfserr = nfsd_create(rqstp, &resp->dirfh, argp->name, argp->len,
&argp->attrs, type, rdev, &resp->fh);
-
+ fh_unlock(&resp->dirfh);
RETURN_STATUS(nfserr);
}
@@ -348,6 +348,7 @@ nfsd3_proc_remove(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
/* Unlink. -S_IFDIR means file must not be a directory */
fh_copy(&resp->fh, &argp->fh);
nfserr = nfsd_unlink(rqstp, &resp->fh, -S_IFDIR, argp->name, argp->len);
+ fh_unlock(&resp->fh);
RETURN_STATUS(nfserr);
}
@@ -367,6 +368,7 @@ nfsd3_proc_rmdir(struct svc_rqst *rqstp, struct nfsd3_diropargs *argp,
fh_copy(&resp->fh, &argp->fh);
nfserr = nfsd_unlink(rqstp, &resp->fh, S_IFDIR, argp->name, argp->len);
+ fh_unlock(&resp->fh);
RETURN_STATUS(nfserr);
}
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index eb78e7e2207..988cbb3a19b 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -143,8 +143,6 @@ struct nfs4_cb_compound_hdr {
u32 minorversion;
/* res */
int status;
- u32 taglen;
- char *tag;
};
static struct {
@@ -205,6 +203,16 @@ nfs_cb_stat_to_errno(int stat)
*/
static void
+encode_stateid(struct xdr_stream *xdr, stateid_t *sid)
+{
+ __be32 *p;
+
+ RESERVE_SPACE(sizeof(stateid_t));
+ WRITE32(sid->si_generation);
+ WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+}
+
+static void
encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr)
{
__be32 * p;
@@ -229,10 +237,10 @@ encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp,
__be32 *p;
int len = dp->dl_fh.fh_size;
- RESERVE_SPACE(12+sizeof(dp->dl_stateid) + len);
+ RESERVE_SPACE(4);
WRITE32(OP_CB_RECALL);
- WRITE32(dp->dl_stateid.si_generation);
- WRITEMEM(&dp->dl_stateid.si_opaque, sizeof(stateid_opaque_t));
+ encode_stateid(xdr, &dp->dl_stateid);
+ RESERVE_SPACE(8 + (XDR_QUADLEN(len) << 2));
WRITE32(0); /* truncate optimization not implemented */
WRITE32(len);
WRITEMEM(&dp->dl_fh.fh_base, len);
@@ -293,13 +301,14 @@ nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p,
static int
decode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr){
__be32 *p;
+ u32 taglen;
READ_BUF(8);
READ32(hdr->status);
- READ32(hdr->taglen);
- READ_BUF(hdr->taglen + 4);
- hdr->tag = (char *)p;
- p += XDR_QUADLEN(hdr->taglen);
+ /* We've got no use for the tag; ignore it: */
+ READ32(taglen);
+ READ_BUF(taglen + 4);
+ p += XDR_QUADLEN(taglen);
READ32(hdr->nops);
return 0;
}
@@ -667,28 +676,28 @@ static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
}
switch (task->tk_status) {
- case -EIO:
+ case 0:
+ return;
+ case -EBADHANDLE:
+ case -NFS4ERR_BAD_STATEID:
+ /* Race: client probably got cb_recall
+ * before open reply granting delegation */
+ break;
+ default:
/* Network partition? */
atomic_set(&clp->cl_cb_set, 0);
warn_no_callback_path(clp, task->tk_status);
if (current_rpc_client != task->tk_client) {
/* queue a callback on the new connection: */
+ atomic_inc(&dp->dl_count);
nfsd4_cb_recall(dp);
return;
}
- case -EBADHANDLE:
- case -NFS4ERR_BAD_STATEID:
- /* Race: client probably got cb_recall
- * before open reply granting delegation */
- break;
- default:
- /* success, or error we can't handle */
- return;
}
if (dp->dl_retries--) {
rpc_delay(task, 2*HZ);
task->tk_status = 0;
- rpc_restart_call(task);
+ rpc_restart_call_prepare(task);
return;
} else {
atomic_set(&clp->cl_cb_set, 0);
@@ -752,18 +761,16 @@ static void _nfsd4_cb_recall(struct nfs4_delegation *dp)
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
.rpc_cred = callback_cred
};
- int status;
- if (clnt == NULL)
+ if (clnt == NULL) {
+ nfs4_put_delegation(dp);
return; /* Client is shutting down; give up. */
+ }
args->args_op = dp;
msg.rpc_argp = args;
dp->dl_retries = 1;
- status = rpc_call_async(clnt, &msg, RPC_TASK_SOFT,
- &nfsd4_cb_recall_ops, dp);
- if (status)
- nfs4_put_delegation(dp);
+ rpc_call_async(clnt, &msg, RPC_TASK_SOFT, &nfsd4_cb_recall_ops, dp);
}
void nfsd4_do_callback_rpc(struct work_struct *w)
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
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index ac17a708023..f8931acb05f 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2630,7 +2630,7 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
}
read->rd_vlen = v;
- nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp,
+ nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp,
read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen,
&maxcount);
@@ -3325,6 +3325,7 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo
}
/* Renew the clientid on success and on replay */
release_session_client(cs->session);
+ nfsd4_put_session(cs->session);
}
return 1;
}
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 508941c23af..b53b1d042f1 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -949,15 +949,12 @@ static ssize_t __write_ports_addfd(char *buf)
if (err != 0)
return err;
- err = lockd_up();
- if (err != 0)
- goto out;
-
err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
- if (err < 0)
- lockd_down();
+ if (err < 0) {
+ svc_destroy(nfsd_serv);
+ return err;
+ }
-out:
/* Decrease the count, but don't shut down the service */
nfsd_serv->sv_nrthreads--;
return err;
@@ -978,9 +975,6 @@ static ssize_t __write_ports_delfd(char *buf)
if (nfsd_serv != NULL)
len = svc_sock_names(nfsd_serv, buf,
SIMPLE_TRANSACTION_LIMIT, toclose);
- if (len >= 0)
- lockd_down();
-
kfree(toclose);
return len;
}
@@ -1014,6 +1008,9 @@ static ssize_t __write_ports_addxprt(char *buf)
PF_INET6, port, SVC_SOCK_ANONYMOUS);
if (err < 0 && err != -EAFNOSUPPORT)
goto out_close;
+
+ /* Decrease the count, but don't shut down the service */
+ nfsd_serv->sv_nrthreads--;
return 0;
out_close:
xprt = svc_find_xprt(nfsd_serv, transport, PF_INET, port);
@@ -1022,8 +1019,7 @@ out_close:
svc_xprt_put(xprt);
}
out_err:
- /* Decrease the count, but don't shut down the service */
- nfsd_serv->sv_nrthreads--;
+ svc_destroy(nfsd_serv);
return err;
}
@@ -1194,7 +1190,7 @@ static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
bsize = NFSSVC_MAXBLKSIZE;
bsize &= ~(1024-1);
mutex_lock(&nfsd_mutex);
- if (nfsd_serv && nfsd_serv->sv_nrthreads) {
+ if (nfsd_serv) {
mutex_unlock(&nfsd_mutex);
return -EBUSY;
}
@@ -1310,6 +1306,8 @@ static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
return -EINVAL;
status = nfs4_reset_recoverydir(recdir);
+ if (status)
+ return status;
}
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 72377761270..b76ac3a82e3 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -153,6 +153,7 @@ void nfsd_lockd_shutdown(void);
#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
+#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index a047ad6111e..08e17264784 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -144,7 +144,7 @@ nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp,
svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
resp->count = argp->count;
- nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh), NULL,
+ nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh),
argp->offset,
rqstp->rq_vec, argp->vlen,
&resp->count);
@@ -290,7 +290,6 @@ nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp,
* gospel of sun micro
*/
if (type != S_IFREG) {
- int is_borc = 0;
if (type != S_IFBLK && type != S_IFCHR) {
rdev = 0;
} else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
@@ -298,7 +297,6 @@ nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp,
type = S_IFIFO;
} else {
/* Okay, char or block special */
- is_borc = 1;
if (!rdev)
rdev = wanted;
}
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 06b2a26edfe..e2c43464f23 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -180,15 +180,80 @@ int nfsd_nrthreads(void)
return rv;
}
+static int nfsd_init_socks(int port)
+{
+ int error;
+ if (!list_empty(&nfsd_serv->sv_permsocks))
+ return 0;
+
+ error = svc_create_xprt(nfsd_serv, "udp", PF_INET, port,
+ SVC_SOCK_DEFAULTS);
+ if (error < 0)
+ return error;
+
+ error = svc_create_xprt(nfsd_serv, "tcp", PF_INET, port,
+ SVC_SOCK_DEFAULTS);
+ if (error < 0)
+ return error;
+
+ return 0;
+}
+
+static bool nfsd_up = false;
+
+static int nfsd_startup(unsigned short port, int nrservs)
+{
+ int ret;
+
+ if (nfsd_up)
+ return 0;
+ /*
+ * Readahead param cache - will no-op if it already exists.
+ * (Note therefore results will be suboptimal if number of
+ * threads is modified after nfsd start.)
+ */
+ ret = nfsd_racache_init(2*nrservs);
+ if (ret)
+ return ret;
+ ret = nfsd_init_socks(port);
+ if (ret)
+ goto out_racache;
+ ret = lockd_up();
+ if (ret)
+ goto out_racache;
+ ret = nfs4_state_start();
+ if (ret)
+ goto out_lockd;
+ nfsd_up = true;
+ return 0;
+out_lockd:
+ lockd_down();
+out_racache:
+ nfsd_racache_shutdown();
+ return ret;
+}
+
+static void nfsd_shutdown(void)
+{
+ /*
+ * write_ports can create the server without actually starting
+ * any threads--if we get shut down before any threads are
+ * started, then nfsd_last_thread will be run before any of this
+ * other initialization has been done.
+ */
+ if (!nfsd_up)
+ return;
+ nfs4_state_shutdown();
+ lockd_down();
+ nfsd_racache_shutdown();
+ nfsd_up = false;
+}
+
static void nfsd_last_thread(struct svc_serv *serv)
{
/* When last nfsd thread exits we need to do some clean-up */
- struct svc_xprt *xprt;
- list_for_each_entry(xprt, &serv->sv_permsocks, xpt_list)
- lockd_down();
nfsd_serv = NULL;
- nfsd_racache_shutdown();
- nfs4_state_shutdown();
+ nfsd_shutdown();
printk(KERN_WARNING "nfsd: last server has exited, flushing export "
"cache\n");
@@ -263,45 +328,18 @@ int nfsd_create_serv(void)
nfsd_max_blksize >= 8*1024*2)
nfsd_max_blksize /= 2;
}
+ nfsd_reset_versions();
nfsd_serv = svc_create_pooled(&nfsd_program, nfsd_max_blksize,
nfsd_last_thread, nfsd, THIS_MODULE);
if (nfsd_serv == NULL)
- err = -ENOMEM;
- else
- set_max_drc();
+ return -ENOMEM;
+ set_max_drc();
do_gettimeofday(&nfssvc_boot); /* record boot time */
return err;
}
-static int nfsd_init_socks(int port)
-{
- int error;
- if (!list_empty(&nfsd_serv->sv_permsocks))
- return 0;
-
- error = svc_create_xprt(nfsd_serv, "udp", PF_INET, port,
- SVC_SOCK_DEFAULTS);
- if (error < 0)
- return error;
-
- error = lockd_up();
- if (error < 0)
- return error;
-
- error = svc_create_xprt(nfsd_serv, "tcp", PF_INET, port,
- SVC_SOCK_DEFAULTS);
- if (error < 0)
- return error;
-
- error = lockd_up();
- if (error < 0)
- return error;
-
- return 0;
-}
-
int nfsd_nrpools(void)
{
if (nfsd_serv == NULL)
@@ -376,10 +414,16 @@ int nfsd_set_nrthreads(int n, int *nthreads)
return err;
}
+/*
+ * Adjust the number of threads and return the new number of threads.
+ * This is also the function that starts the server if necessary, if
+ * this is the first time nrservs is nonzero.
+ */
int
nfsd_svc(unsigned short port, int nrservs)
{
int error;
+ bool nfsd_up_before;
mutex_lock(&nfsd_mutex);
dprintk("nfsd: creating service\n");
@@ -391,34 +435,29 @@ nfsd_svc(unsigned short port, int nrservs)
if (nrservs == 0 && nfsd_serv == NULL)
goto out;
- /* Readahead param cache - will no-op if it already exists */
- error = nfsd_racache_init(2*nrservs);
- if (error<0)
- goto out;
- error = nfs4_state_start();
+ error = nfsd_create_serv();
if (error)
goto out;
- nfsd_reset_versions();
-
- error = nfsd_create_serv();
+ nfsd_up_before = nfsd_up;
+ error = nfsd_startup(port, nrservs);
if (error)
- goto out;
- error = nfsd_init_socks(port);
- if (error)
- goto failure;
-
+ goto out_destroy;
error = svc_set_num_threads(nfsd_serv, NULL, nrservs);
- if (error == 0)
- /* We are holding a reference to nfsd_serv which
- * we don't want to count in the return value,
- * so subtract 1
- */
- error = nfsd_serv->sv_nrthreads - 1;
- failure:
+ if (error)
+ goto out_shutdown;
+ /* We are holding a reference to nfsd_serv which
+ * we don't want to count in the return value,
+ * so subtract 1
+ */
+ error = nfsd_serv->sv_nrthreads - 1;
+out_shutdown:
+ if (error < 0 && !nfsd_up_before)
+ nfsd_shutdown();
+out_destroy:
svc_destroy(nfsd_serv); /* Release server */
- out:
+out:
mutex_unlock(&nfsd_mutex);
return error;
}
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 006c84230c7..7731a75971d 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -88,7 +88,6 @@ struct nfs4_delegation {
struct nfs4_client *dl_client;
struct nfs4_file *dl_file;
struct file_lock *dl_flock;
- struct file *dl_vfs_file;
u32 dl_type;
time_t dl_time;
/* For recall: */
@@ -342,12 +341,50 @@ struct nfs4_file {
struct list_head fi_hash; /* hash by "struct inode *" */
struct list_head fi_stateids;
struct list_head fi_delegations;
+ /* One each for O_RDONLY, O_WRONLY, O_RDWR: */
+ struct file * fi_fds[3];
+ /* One each for O_RDONLY, O_WRONLY: */
+ atomic_t fi_access[2];
+ /*
+ * Each open stateid contributes 1 to either fi_readers or
+ * fi_writers, or both, depending on the open mode. A
+ * delegation also takes an fi_readers reference. Lock
+ * stateid's take none.
+ */
+ atomic_t fi_readers;
+ atomic_t fi_writers;
struct inode *fi_inode;
u32 fi_id; /* used with stateowner->so_id
* for stateid_hashtbl hash */
bool fi_had_conflict;
};
+/* XXX: for first cut may fall back on returning file that doesn't work
+ * at all? */
+static inline struct file *find_writeable_file(struct nfs4_file *f)
+{
+ if (f->fi_fds[O_RDWR])
+ return f->fi_fds[O_RDWR];
+ return f->fi_fds[O_WRONLY];
+}
+
+static inline struct file *find_readable_file(struct nfs4_file *f)
+{
+ if (f->fi_fds[O_RDWR])
+ return f->fi_fds[O_RDWR];
+ return f->fi_fds[O_RDONLY];
+}
+
+static inline struct file *find_any_file(struct nfs4_file *f)
+{
+ if (f->fi_fds[O_RDWR])
+ return f->fi_fds[O_RDWR];
+ else if (f->fi_fds[O_RDWR])
+ return f->fi_fds[O_WRONLY];
+ else
+ return f->fi_fds[O_RDONLY];
+}
+
/*
* nfs4_stateid can either be an open stateid or (eventually) a lock stateid
*
@@ -373,7 +410,6 @@ struct nfs4_stateid {
struct nfs4_stateowner * st_stateowner;
struct nfs4_file * st_file;
stateid_t st_stateid;
- struct file * st_vfs_file;
unsigned long st_access_bmap;
unsigned long st_deny_bmap;
struct nfs4_stateid * st_openstp;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 3c111120b61..9df85a13af2 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -604,7 +604,7 @@ nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, struct nfs4_ac
return error;
}
-#endif /* defined(CONFIG_NFS_V4) */
+#endif /* defined(CONFIG_NFSD_V4) */
#ifdef CONFIG_NFSD_V3
/*
@@ -903,7 +903,6 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
loff_t offset, struct kvec *vec, int vlen, unsigned long *count)
{
struct inode *inode;
- struct raparms *ra;
mm_segment_t oldfs;
__be32 err;
int host_err;
@@ -914,12 +913,6 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
if (svc_msnfs(fhp) && !lock_may_read(inode, offset, *count))
goto out;
- /* Get readahead parameters */
- ra = nfsd_get_raparms(inode->i_sb->s_dev, inode->i_ino);
-
- if (ra && ra->p_set)
- file->f_ra = ra->p_ra;
-
if (file->f_op->splice_read && rqstp->rq_splice_ok) {
struct splice_desc sd = {
.len = 0,
@@ -937,16 +930,6 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
set_fs(oldfs);
}
- /* Write back readahead params */
- if (ra) {
- struct raparm_hbucket *rab = &raparm_hash[ra->p_hindex];
- spin_lock(&rab->pb_lock);
- ra->p_ra = file->f_ra;
- ra->p_set = 1;
- ra->p_count--;
- spin_unlock(&rab->pb_lock);
- }
-
if (host_err >= 0) {
nfsdstats.io_read += host_err;
*count = host_err;
@@ -1086,8 +1069,45 @@ out:
* on entry. On return, *count contains the number of bytes actually read.
* N.B. After this call fhp needs an fh_put
*/
+__be32 nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp,
+ loff_t offset, struct kvec *vec, int vlen, unsigned long *count)
+{
+ struct file *file;
+ struct inode *inode;
+ struct raparms *ra;
+ __be32 err;
+
+ err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file);
+ if (err)
+ return err;
+
+ inode = file->f_path.dentry->d_inode;
+
+ /* Get readahead parameters */
+ ra = nfsd_get_raparms(inode->i_sb->s_dev, inode->i_ino);
+
+ if (ra && ra->p_set)
+ file->f_ra = ra->p_ra;
+
+ err = nfsd_vfs_read(rqstp, fhp, file, offset, vec, vlen, count);
+
+ /* Write back readahead params */
+ if (ra) {
+ struct raparm_hbucket *rab = &raparm_hash[ra->p_hindex];
+ spin_lock(&rab->pb_lock);
+ ra->p_ra = file->f_ra;
+ ra->p_set = 1;
+ ra->p_count--;
+ spin_unlock(&rab->pb_lock);
+ }
+
+ nfsd_close(file);
+ return err;
+}
+
+/* As above, but use the provided file descriptor. */
__be32
-nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
+nfsd_read_file(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
loff_t offset, struct kvec *vec, int vlen,
unsigned long *count)
{
@@ -1099,13 +1119,8 @@ nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
if (err)
goto out;
err = nfsd_vfs_read(rqstp, fhp, file, offset, vec, vlen, count);
- } else {
- err = nfsd_open(rqstp, fhp, S_IFREG, NFSD_MAY_READ, &file);
- if (err)
- goto out;
- err = nfsd_vfs_read(rqstp, fhp, file, offset, vec, vlen, count);
- nfsd_close(file);
- }
+ } else /* Note file may still be NULL in NFSv4 special stateid case: */
+ err = nfsd_read(rqstp, fhp, offset, vec, vlen, count);
out:
return err;
}
@@ -1631,7 +1646,7 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
char *name, int len, struct svc_fh *tfhp)
{
struct dentry *ddir, *dnew, *dold;
- struct inode *dirp, *dest;
+ struct inode *dirp;
__be32 err;
int host_err;
@@ -1659,7 +1674,6 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
goto out_nfserr;
dold = tfhp->fh_dentry;
- dest = dold->d_inode;
host_err = mnt_want_write(tfhp->fh_export->ex_path.mnt);
if (host_err) {
@@ -2038,7 +2052,6 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
struct dentry *dentry, int acc)
{
struct inode *inode = dentry->d_inode;
- struct path path;
int err;
if (acc == NFSD_MAY_NOP)
@@ -2111,15 +2124,7 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
if (err == -EACCES && S_ISREG(inode->i_mode) &&
acc == (NFSD_MAY_READ | NFSD_MAY_OWNER_OVERRIDE))
err = inode_permission(inode, MAY_EXEC);
- if (err)
- goto nfsd_out;
- /* Do integrity (permission) checking now, but defer incrementing
- * IMA counts to the actual file open.
- */
- path.mnt = exp->ex_path.mnt;
- path.dentry = dentry;
-nfsd_out:
return err? nfserrno(err) : 0;
}
diff --git a/fs/nfsd/vfs.h b/fs/nfsd/vfs.h
index 217a62c2a35..9a370a5e36b 100644
--- a/fs/nfsd/vfs.h
+++ b/fs/nfsd/vfs.h
@@ -64,7 +64,9 @@ __be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, int,
int, struct file **);
void nfsd_close(struct file *);
-__be32 nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *,
+__be32 nfsd_read(struct svc_rqst *, struct svc_fh *,
+ loff_t, struct kvec *, int, unsigned long *);
+__be32 nfsd_read_file(struct svc_rqst *, struct svc_fh *, struct file *,
loff_t, struct kvec *, int, unsigned long *);
__be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
loff_t, struct kvec *,int, unsigned long *, int *);