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Merge branch 'for-2.6.36' of git://linux-nfs.org/~bfields/linux

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* '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
  ...
This commit is contained in:
Linus Torvalds 2010-08-07 14:24:41 -07:00
commit 0d9f9e122c
14 changed files with 475 additions and 291 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
fs/nfsd/nfs3proc.c
View File

@ -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);
}

61
fs/nfsd/nfs4callback.c
View File

@ -143,8 +143,6 @@ struct nfs4_cb_compound_hdr {
u32 minorversion;
/* res */
int status;
u32 taglen;
char *tag;
};
static struct {
@ -204,6 +202,16 @@ nfs_cb_stat_to_errno(int stat)
* XDR encode
*/
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)
{
@ -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:
/* 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: */
nfsd4_cb_recall(dp);
return;
}
case 0:
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;
/* 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;
}
}
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)

379
fs/nfsd/nfs4state.c
View File

@ -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);
@ -1970,57 +2089,6 @@ static inline int deny_valid(u32 x)
return x <= NFS4_SHARE_DENY_BOTH;
}
/*
* 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;
set_access(&new_access, stp->st_access_bmap);
new_access = (~new_access) & open->op_share_access & ~NFS4_SHARE_WANT_MASK;
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);
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

3
fs/nfsd/nfs4xdr.c
View File

@ -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;
}

24
fs/nfsd/nfsctl.c
View File

@ -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",

1
fs/nfsd/nfsd.h
View File

@ -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)

4
fs/nfsd/nfsproc.c
View File

@ -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;
}

153
fs/nfsd/nfssvc.c
View File

@ -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();
if (error)
goto out;
nfsd_reset_versions();
error = nfsd_create_serv();
if (error)
goto out;
error = nfsd_init_socks(port);
if (error)
goto failure;
nfsd_up_before = nfsd_up;
error = nfsd_startup(port, nrservs);
if (error)
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;
}

40
fs/nfsd/state.h
View File

@ -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;

79
fs/nfsd/vfs.c
View File

@ -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;
}

4
fs/nfsd/vfs.h
View File

@ -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 *);

1
include/linux/sunrpc/cache.h
View File

@ -192,6 +192,7 @@ extern int cache_check(struct cache_detail *detail,
extern void cache_flush(void);
extern void cache_purge(struct cache_detail *detail);
#define NEVER (0x7FFFFFFF)
extern void __init cache_initialize(void);
extern int cache_register(struct cache_detail *cd);
extern void cache_unregister(struct cache_detail *cd);

8
net/sunrpc/cache.c
View File

@ -34,7 +34,6 @@
#include <linux/sunrpc/cache.h>
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/smp_lock.h>
#define RPCDBG_FACILITY RPCDBG_CACHE
@ -320,7 +319,7 @@ static struct cache_detail *current_detail;
static int current_index;
static void do_cache_clean(struct work_struct *work);
static DECLARE_DELAYED_WORK(cache_cleaner, do_cache_clean);
static struct delayed_work cache_cleaner;
static void sunrpc_init_cache_detail(struct cache_detail *cd)
{
@ -1504,6 +1503,11 @@ static int create_cache_proc_entries(struct cache_detail *cd)
}
#endif
void __init cache_initialize(void)
{
INIT_DELAYED_WORK_DEFERRABLE(&cache_cleaner, do_cache_clean);
}
int cache_register(struct cache_detail *cd)
{
int ret;

1
net/sunrpc/sunrpc_syms.c
View File

@ -44,6 +44,7 @@ init_sunrpc(void)
#ifdef CONFIG_PROC_FS
rpc_proc_init();
#endif
cache_initialize();
cache_register(&ip_map_cache);
cache_register(&unix_gid_cache);
svc_init_xprt_sock(); /* svc sock transport */