Commit 7e0338c0 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-2.6.31' of git://fieldses.org/git/linux-nfsd

* 'for-2.6.31' of git://fieldses.org/git/linux-nfsd: (60 commits)
  SUNRPC: Fix the TCP server's send buffer accounting
  nfsd41: Backchannel: minorversion support for the back channel
  nfsd41: Backchannel: cleanup nfs4.0 callback encode routines
  nfsd41: Remove ip address collision detection case
  nfsd: optimise the starting of zero threads when none are running.
  nfsd: don't take nfsd_mutex twice when setting number of threads.
  nfsd41: sanity check client drc maxreqs
  nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct
  NFS: kill off complicated macro 'PROC'
  sunrpc: potential memory leak in function rdma_read_xdr
  nfsd: minor nfsd_vfs_write cleanup
  nfsd: Pull write-gathering code out of nfsd_vfs_write
  nfsd: track last inode only in use_wgather case
  sunrpc: align cache_clean work's timer
  nfsd: Use write gathering only with NFSv2
  NFSv4: kill off complicated macro 'PROC'
  NFSv4: do exact check about attribute specified
  knfsd: remove unreported filehandle stats counters
  knfsd: fix reply cache memory corruption
  knfsd: reply cache cleanups
  ...
parents df36b439 47fcb03f
......@@ -66,6 +66,10 @@ mandatory-locking.txt
- info on the Linux implementation of Sys V mandatory file locking.
ncpfs.txt
- info on Novell Netware(tm) filesystem using NCP protocol.
nfs41-server.txt
- info on the Linux server implementation of NFSv4 minor version 1.
nfs-rdma.txt
- how to install and setup the Linux NFS/RDMA client and server software.
nfsroot.txt
- short guide on setting up a diskless box with NFS root filesystem.
nilfs2.txt
......
......@@ -236,10 +236,12 @@ source "fs/nfsd/Kconfig"
config LOCKD
tristate
depends on FILE_LOCKING
config LOCKD_V4
bool
depends on NFSD_V3 || NFS_V3
depends on FILE_LOCKING
default y
config EXPORTFS
......
......@@ -326,6 +326,8 @@ static void nlmsvc_freegrantargs(struct nlm_rqst *call)
{
if (call->a_args.lock.oh.data != call->a_owner)
kfree(call->a_args.lock.oh.data);
locks_release_private(&call->a_args.lock.fl);
}
/*
......
......@@ -151,7 +151,7 @@ static struct file_lock *locks_alloc_lock(void)
return kmem_cache_alloc(filelock_cache, GFP_KERNEL);
}
static void locks_release_private(struct file_lock *fl)
void locks_release_private(struct file_lock *fl)
{
if (fl->fl_ops) {
if (fl->fl_ops->fl_release_private)
......@@ -165,6 +165,7 @@ static void locks_release_private(struct file_lock *fl)
}
}
EXPORT_SYMBOL_GPL(locks_release_private);
/* Free a lock which is not in use. */
static void locks_free_lock(struct file_lock *fl)
......
config NFS_FS
tristate "NFS client support"
depends on INET
depends on INET && FILE_LOCKING
select LOCKD
select SUNRPC
select NFS_ACL_SUPPORT if NFS_V3_ACL
......
......@@ -464,16 +464,11 @@ static int secinfo_parse(char **mesg, char *buf, struct svc_export *exp)
if (err)
return err;
/*
* Just a quick sanity check; we could also try to check
* whether this pseudoflavor is supported, but at worst
* an unsupported pseudoflavor on the export would just
* be a pseudoflavor that won't match the flavor of any
* authenticated request. The administrator will
* probably discover the problem when someone fails to
* authenticate.
* XXX: It would be nice to also check whether this
* pseudoflavor is supported, so we can discover the
* problem at export time instead of when a client fails
* to authenticate.
*/
if (f->pseudoflavor < 0)
return -EINVAL;
err = get_int(mesg, &f->flags);
if (err)
return err;
......
This diff is collapsed.
......@@ -272,6 +272,7 @@ void fill_post_wcc(struct svc_fh *fhp)
err = vfs_getattr(fhp->fh_export->ex_path.mnt, fhp->fh_dentry,
&fhp->fh_post_attr);
fhp->fh_post_change = fhp->fh_dentry->d_inode->i_version;
if (err)
fhp->fh_post_saved = 0;
else
......
......@@ -140,8 +140,10 @@ struct nfs4_cb_compound_hdr {
int status;
u32 ident;
u32 nops;
__be32 *nops_p;
u32 minorversion;
u32 taglen;
char * tag;
char *tag;
};
static struct {
......@@ -201,33 +203,39 @@ nfs_cb_stat_to_errno(int stat)
* XDR encode
*/
static int
static void
encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr)
{
__be32 * p;
RESERVE_SPACE(16);
WRITE32(0); /* tag length is always 0 */
WRITE32(NFS4_MINOR_VERSION);
WRITE32(hdr->minorversion);
WRITE32(hdr->ident);
hdr->nops_p = p;
WRITE32(hdr->nops);
return 0;
}
static int
encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec)
static void encode_cb_nops(struct nfs4_cb_compound_hdr *hdr)
{
*hdr->nops_p = htonl(hdr->nops);
}
static void
encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp,
struct nfs4_cb_compound_hdr *hdr)
{
__be32 *p;
int len = cb_rec->cbr_fh.fh_size;
int len = dp->dl_fh.fh_size;
RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len);
RESERVE_SPACE(12+sizeof(dp->dl_stateid) + len);
WRITE32(OP_CB_RECALL);
WRITE32(cb_rec->cbr_stateid.si_generation);
WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t));
WRITE32(cb_rec->cbr_trunc);
WRITE32(dp->dl_stateid.si_generation);
WRITEMEM(&dp->dl_stateid.si_opaque, sizeof(stateid_opaque_t));
WRITE32(0); /* truncate optimization not implemented */
WRITE32(len);
WRITEMEM(&cb_rec->cbr_fh.fh_base, len);
return 0;
WRITEMEM(&dp->dl_fh.fh_base, len);
hdr->nops++;
}
static int
......@@ -241,17 +249,18 @@ nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p)
}
static int
nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, struct nfs4_cb_recall *args)
nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, struct nfs4_delegation *args)
{
struct xdr_stream xdr;
struct nfs4_cb_compound_hdr hdr = {
.ident = args->cbr_ident,
.nops = 1,
.ident = args->dl_ident,
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
encode_cb_compound_hdr(&xdr, &hdr);
return (encode_cb_recall(&xdr, args));
encode_cb_recall(&xdr, args, &hdr);
encode_cb_nops(&hdr);
return 0;
}
......@@ -358,18 +367,21 @@ static struct rpc_program cb_program = {
.pipe_dir_name = "/nfsd4_cb",
};
static int max_cb_time(void)
{
return max(NFSD_LEASE_TIME/10, (time_t)1) * HZ;
}
/* Reference counting, callback cleanup, etc., all look racy as heck.
* And why is cb_set an atomic? */
static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
int setup_callback_client(struct nfs4_client *clp)
{
struct sockaddr_in addr;
struct nfs4_callback *cb = &clp->cl_callback;
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_timeout timeparms = {
.to_initval = (NFSD_LEASE_TIME/4) * HZ,
.to_retries = 5,
.to_maxval = (NFSD_LEASE_TIME/2) * HZ,
.to_exponential = 1,
.to_initval = max_cb_time(),
.to_retries = 0,
};
struct rpc_create_args args = {
.protocol = IPPROTO_TCP,
......@@ -386,7 +398,7 @@ static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
struct rpc_clnt *client;
if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
return ERR_PTR(-EINVAL);
return -EINVAL;
/* Initialize address */
memset(&addr, 0, sizeof(addr));
......@@ -396,48 +408,77 @@ static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
/* Create RPC client */
client = rpc_create(&args);
if (IS_ERR(client))
if (IS_ERR(client)) {
dprintk("NFSD: couldn't create callback client: %ld\n",
PTR_ERR(client));
return client;
return PTR_ERR(client);
}
cb->cb_client = client;
return 0;
}
static int do_probe_callback(void *data)
static void warn_no_callback_path(struct nfs4_client *clp, int reason)
{
struct nfs4_client *clp = data;
struct nfs4_callback *cb = &clp->cl_callback;
dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
(int)clp->cl_name.len, clp->cl_name.data, reason);
}
static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
{
struct nfs4_client *clp = calldata;
if (task->tk_status)
warn_no_callback_path(clp, task->tk_status);
else
atomic_set(&clp->cl_cb_conn.cb_set, 1);
put_nfs4_client(clp);
}
static const struct rpc_call_ops nfsd4_cb_probe_ops = {
.rpc_call_done = nfsd4_cb_probe_done,
};
static struct rpc_cred *lookup_cb_cred(struct nfs4_cb_conn *cb)
{
struct auth_cred acred = {
.machine_cred = 1
};
/*
* Note in the gss case this doesn't actually have to wait for a
* gss upcall (or any calls to the client); this just creates a
* non-uptodate cred which the rpc state machine will fill in with
* a refresh_upcall later.
*/
return rpcauth_lookup_credcache(cb->cb_client->cl_auth, &acred,
RPCAUTH_LOOKUP_NEW);
}
void do_probe_callback(struct nfs4_client *clp)
{
struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
.rpc_argp = clp,
};
struct rpc_clnt *client;
struct rpc_cred *cred;
int status;
client = setup_callback_client(clp);
if (IS_ERR(client)) {
status = PTR_ERR(client);
dprintk("NFSD: couldn't create callback client: %d\n",
status);
goto out_err;
cred = lookup_cb_cred(cb);
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
status = rpc_call_sync(client, &msg, RPC_TASK_SOFT);
if (status)
goto out_release_client;
cb->cb_client = client;
atomic_set(&cb->cb_set, 1);
put_nfs4_client(clp);
return 0;
out_release_client:
rpc_shutdown_client(client);
out_err:
dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
(int)clp->cl_name.len, clp->cl_name.data, status);
cb->cb_cred = cred;
msg.rpc_cred = cb->cb_cred;
status = rpc_call_async(cb->cb_client, &msg, RPC_TASK_SOFT,
&nfsd4_cb_probe_ops, (void *)clp);
out:
if (status) {
warn_no_callback_path(clp, status);
put_nfs4_client(clp);
return 0;
}
}
/*
......@@ -446,63 +487,85 @@ static int do_probe_callback(void *data)
void
nfsd4_probe_callback(struct nfs4_client *clp)
{
struct task_struct *t;
int status;
BUG_ON(atomic_read(&clp->cl_callback.cb_set));
BUG_ON(atomic_read(&clp->cl_cb_conn.cb_set));
status = setup_callback_client(clp);
if (status) {
warn_no_callback_path(clp, status);
return;
}
/* the task holds a reference to the nfs4_client struct */
atomic_inc(&clp->cl_count);
t = kthread_run(do_probe_callback, clp, "nfs4_cb_probe");
if (IS_ERR(t))
atomic_dec(&clp->cl_count);
return;
do_probe_callback(clp);
}
/*
* called with dp->dl_count inc'ed.
*/
void
nfsd4_cb_recall(struct nfs4_delegation *dp)
static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
{
struct nfs4_delegation *dp = calldata;
struct nfs4_client *clp = dp->dl_client;
struct rpc_clnt *clnt = clp->cl_callback.cb_client;
struct nfs4_cb_recall *cbr = &dp->dl_recall;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
.rpc_argp = cbr,
};
int retries = 1;
int status = 0;
cbr->cbr_trunc = 0; /* XXX need to implement truncate optimization */
cbr->cbr_dp = dp;
status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
while (retries--) {
switch (status) {
switch (task->tk_status) {
case -EIO:
/* Network partition? */
atomic_set(&clp->cl_callback.cb_set, 0);
atomic_set(&clp->cl_cb_conn.cb_set, 0);
warn_no_callback_path(clp, task->tk_status);
case -EBADHANDLE:
case -NFS4ERR_BAD_STATEID:
/* Race: client probably got cb_recall
* before open reply granting delegation */
break;
default:
goto out_put_cred;
/* success, or error we can't handle */
return;
}
ssleep(2);
status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
if (dp->dl_retries--) {
rpc_delay(task, 2*HZ);
task->tk_status = 0;
rpc_restart_call(task);
} else {
atomic_set(&clp->cl_cb_conn.cb_set, 0);
warn_no_callback_path(clp, task->tk_status);
}
out_put_cred:
/*
* Success or failure, now we're either waiting for lease expiration
* or deleg_return.
}
static void nfsd4_cb_recall_release(void *calldata)
{
struct nfs4_delegation *dp = calldata;
struct nfs4_client *clp = dp->dl_client;
nfs4_put_delegation(dp);
put_nfs4_client(clp);
}
static const struct rpc_call_ops nfsd4_cb_recall_ops = {
.rpc_call_done = nfsd4_cb_recall_done,
.rpc_release = nfsd4_cb_recall_release,
};
/*
* called with dp->dl_count inc'ed.
*/
void
nfsd4_cb_recall(struct nfs4_delegation *dp)
{
struct nfs4_client *clp = dp->dl_client;
struct rpc_clnt *clnt = clp->cl_cb_conn.cb_client;
struct rpc_message msg = {
.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
.rpc_argp = dp,
.rpc_cred = clp->cl_cb_conn.cb_cred
};
int status;
dp->dl_retries = 1;
status = rpc_call_async(clnt, &msg, RPC_TASK_SOFT,
&nfsd4_cb_recall_ops, dp);
if (status) {
put_nfs4_client(clp);
nfs4_put_delegation(dp);
return;
}
}
......@@ -51,6 +51,78 @@
#define NFSDDBG_FACILITY NFSDDBG_PROC
static u32 nfsd_attrmask[] = {
NFSD_WRITEABLE_ATTRS_WORD0,
NFSD_WRITEABLE_ATTRS_WORD1,
NFSD_WRITEABLE_ATTRS_WORD2
};
static u32 nfsd41_ex_attrmask[] = {
NFSD_SUPPATTR_EXCLCREAT_WORD0,
NFSD_SUPPATTR_EXCLCREAT_WORD1,
NFSD_SUPPATTR_EXCLCREAT_WORD2
};
static __be32
check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
u32 *bmval, u32 *writable)
{
struct dentry *dentry = cstate->current_fh.fh_dentry;
struct svc_export *exp = cstate->current_fh.fh_export;
/*
* Check about attributes are supported by the NFSv4 server or not.
* According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
*/
if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
(bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
(bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
return nfserr_attrnotsupp;
/*
* Check FATTR4_WORD0_ACL & FATTR4_WORD0_FS_LOCATIONS can be supported
* in current environment or not.
*/
if (bmval[0] & FATTR4_WORD0_ACL) {
if (!IS_POSIXACL(dentry->d_inode))
return nfserr_attrnotsupp;
}
if (bmval[0] & FATTR4_WORD0_FS_LOCATIONS) {
if (exp->ex_fslocs.locations == NULL)
return nfserr_attrnotsupp;
}
/*
* According to spec, read-only attributes return ERR_INVAL.
*/
if (writable) {
if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
(bmval[2] & ~writable[2]))
return nfserr_inval;
}
return nfs_ok;
}
static __be32
nfsd4_check_open_attributes(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
{
__be32 status = nfs_ok;
if (open->op_create == NFS4_OPEN_CREATE) {
if (open->op_createmode == NFS4_CREATE_UNCHECKED
|| open->op_createmode == NFS4_CREATE_GUARDED)
status = check_attr_support(rqstp, cstate,
open->op_bmval, nfsd_attrmask);
else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
status = check_attr_support(rqstp, cstate,
open->op_bmval, nfsd41_ex_attrmask);
}
return status;
}
static inline void
fh_dup2(struct svc_fh *dst, struct svc_fh *src)
{
......@@ -225,6 +297,10 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (status)
goto out;
status = nfsd4_check_open_attributes(rqstp, cstate, open);
if (status)
goto out;
/* Openowner is now set, so sequence id will get bumped. Now we need
* these checks before we do any creates: */
status = nfserr_grace;
......@@ -395,6 +471,11 @@ nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (status)
return status;
status = check_attr_support(rqstp, cstate, create->cr_bmval,
nfsd_attrmask);
if (status)
return status;
switch (create->cr_type) {
case NF4LNK:
/* ugh! we have to null-terminate the linktext, or
......@@ -689,6 +770,12 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (status)
return status;
status = nfs_ok;
status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
nfsd_attrmask);
if (status)
goto out;
if (setattr->sa_acl != NULL)
status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
setattr->sa_acl);
......@@ -763,10 +850,10 @@ _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (status)
return status;
if ((verify->ve_bmval[0] & ~nfsd_suppattrs0(cstate->minorversion))
|| (verify->ve_bmval[1] & ~nfsd_suppattrs1(cstate->minorversion))
|| (verify->ve_bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
return nfserr_attrnotsupp;
status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
if (status)
return status;
if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
|| (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
return nfserr_inval;
......@@ -1226,24 +1313,9 @@ static const char *nfsd4_op_name(unsigned opnum)
return "unknown_operation";
}
#define nfs4svc_decode_voidargs NULL
#define nfs4svc_release_void NULL
#define nfsd4_voidres nfsd4_voidargs
#define nfs4svc_release_compound NULL
struct nfsd4_voidargs { int dummy; };
#define PROC(name, argt, rest, relt, cache, respsize) \
{ (svc_procfunc) nfsd4_proc_##name, \
(kxdrproc_t) nfs4svc_decode_##argt##args, \
(kxdrproc_t) nfs4svc_encode_##rest##res, \
(kxdrproc_t) nfs4svc_release_##relt, \
sizeof(struct nfsd4_##argt##args), \
sizeof(struct nfsd4_##rest##res), \
0, \
cache, \
respsize, \
}
/*
* TODO: At the present time, the NFSv4 server does not do XID caching
* of requests. Implementing XID caching would not be a serious problem,
......@@ -1255,8 +1327,23 @@ struct nfsd4_voidargs { int dummy; };
* better XID's.
*/
static struct svc_procedure nfsd_procedures4[2] = {
PROC(null, void, void, void, RC_NOCACHE, 1),
PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4)
[NFSPROC4_NULL] = {
.pc_func = (svc_procfunc) nfsd4_proc_null,
.pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
.pc_argsize = sizeof(struct nfsd4_voidargs),
.pc_ressize = sizeof(struct nfsd4_voidres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = 1,
},
[NFSPROC4_COMPOUND] = {
.pc_func = (svc_procfunc) nfsd4_proc_compound,
.pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
.pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
.pc_argsize = sizeof(struct nfsd4_compoundargs),
.pc_ressize = sizeof(struct nfsd4_compoundres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = NFSD_BUFSIZE/4,
},
};
struct svc_version nfsd_version4 = {
......
This diff is collapsed.
This diff is collapsed.
......@@ -29,12 +29,21 @@
*/
#define CACHESIZE 1024
#define HASHSIZE 64
#define REQHASH(xid) (((((__force __u32)xid) >> 24) ^ ((__force __u32)xid)) & (HASHSIZE-1))
static struct hlist_head * hash_list;
static struct hlist_head * cache_hash;
static struct list_head lru_head;
static int cache_disabled = 1;
/*
* Calculate the hash index from an XID.
*/
static inline u32 request_hash(u32 xid)
{
u32 h = xid;
h ^= (xid >> 24);
return h & (HASHSIZE-1);
}
static int nfsd_cache_append(struct svc_rqst *rqstp, struct kvec *vec);
/*
......@@ -62,8 +71,8 @@ int nfsd_reply_cache_init(void)
i--;
}
hash_list = kcalloc (HASHSIZE, sizeof(struct hlist_head), GFP_KERNEL);
if (!hash_list)
cache_hash = kcalloc (HASHSIZE, sizeof(struct hlist_head), GFP_KERNEL);
if (!cache_hash)
goto out_nomem;
cache_disabled = 0;
......@@ -88,8 +97,8 @@ void nfsd_reply_cache_shutdown(void)
cache_disabled = 1;
kfree (hash_list);
hash_list = NULL;
kfree (cache_hash);
cache_hash = NULL;
}
/*
......@@ -108,7 +117,7 @@ static void
hash_refile(struct svc_cacherep *rp)
{
hlist_del_init(&rp->c_hash);
hlist_add_head(&rp->c_hash, hash_list + REQHASH(rp->c_xid));
hlist_add_head(&rp->c_hash, cache_hash + request_hash(rp->c_xid));
}
/*
......@@ -138,7 +147,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
spin_lock(&cache_lock);
rtn = RC_DOIT;
rh = &hash_list[REQHASH(xid)];
rh = &cache_hash[request_hash(xid)];
hlist_for_each_entry(rp, hn, rh, c_hash) {
if (rp->c_state != RC_UNUSED &&
xid == rp->c_xid && proc == rp->c_proc &&
......@@ -165,8 +174,8 @@ nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
}
}
/* This should not happen */
if (rp == NULL) {
/* All entries on the LRU are in-progress. This should not happen */
if (&rp->c_lru == &lru_head) {
static int complaints;
printk(KERN_WARNING "nfsd: all repcache entries locked!\n");
......
......@@ -207,10 +207,14 @@ static struct file_operations pool_stats_operations = {
static ssize_t write_svc(struct file *file, char *buf, size_t size)
{
struct nfsctl_svc *data;
int err;
if (size < sizeof(*data))
return -EINVAL;
data = (struct nfsctl_svc*) buf;
return nfsd_svc(data->svc_port, data->svc_nthreads);
err = nfsd_svc(data->svc_port, data->svc_nthreads);
if (err < 0)
return err;
return 0;
}
/**
......@@ -692,11 +696,12 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
if (newthreads < 0)
return -EINVAL;
rv = nfsd_svc(NFS_PORT, newthreads);
if (rv)
if (rv < 0)
return rv;
}
sprintf(buf, "%d\n", nfsd_nrthreads());
return strlen(buf);
} else
rv = nfsd_nrthreads();
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
}
/**
......@@ -793,7 +798,7 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
{
char *mesg = buf;
char *vers, *minorp, sign;
int len, num;
int len, num, remaining;
unsigned minor;
ssize_t tlen = 0;
char *sep;
......@@ -840,32 +845,50 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
}
next:
vers += len + 1;
tlen += len;
} while ((len = qword_get(&mesg, vers, size)) > 0);
/* If all get turned off, turn them back on, as
* having no versions is BAD
*/
nfsd_reset_versions();
}
/* Now write current state into reply buffer */
len = 0;
sep = "";
remaining = SIMPLE_TRANSACTION_LIMIT;
for (num=2 ; num <= 4 ; num++)
if (nfsd_vers(num, NFSD_AVAIL)) {
len += sprintf(buf+len, "%s%c%d", sep,
len = snprintf(buf, remaining, "%s%c%d", sep,
nfsd_vers(num, NFSD_TEST)?'+':'-',
num);
sep = " ";
if (len > remaining)
break;
remaining -= len;
buf += len;
tlen += len;
}
if (nfsd_vers(4, NFSD_AVAIL))
for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; minor++)
len += sprintf(buf+len, " %c4.%u",
for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
minor++) {
len = snprintf(buf, remaining, " %c4.%u",
(nfsd_vers(4, NFSD_TEST) &&
nfsd_minorversion(minor, NFSD_TEST)) ?
'+' : '-',
minor);
len += sprintf(buf+len, "\n");
return len;
if (len > remaining)
break;
remaining -= len;
buf += len;
tlen += len;
}
len = snprintf(buf, remaining, "\n");
if (len > remaining)
return -EINVAL;
return tlen + len;
}
/**
......@@ -910,104 +933,143 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
return rv;
}
static ssize_t __write_ports(struct file *file, char *buf, size_t size)
/*
* Zero-length write. Return a list of NFSD's current listener
* transports.
*/
static ssize_t __write_ports_names(char *buf)
{
if (size == 0) {
int len = 0;
if (nfsd_serv == NULL)
return 0;
return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
}
if (nfsd_serv)
len = svc_xprt_names(nfsd_serv, buf, 0);
return len;
}
/* Either a single 'fd' number is written, in which
* case it must be for a socket of a supported family/protocol,
* and we use it as an nfsd socket, or
* A '-' followed by the 'name' of a socket in which case
* we close the socket.
/*
* A single 'fd' number was written, in which case it must be for
* a socket of a supported family/protocol, and we use it as an
* nfsd listener.
*/
if (isdigit(buf[0])) {
static ssize_t __write_ports_addfd(char *buf)
{
char *mesg = buf;
int fd;
int err;
int fd, err;
err = get_int(&mesg, &fd);
if (err)
return -EINVAL;
if (fd < 0)
if (err != 0 || fd < 0)
return -EINVAL;
err = nfsd_create_serv();
if (!err) {
err = svc_addsock(nfsd_serv, fd, buf);
if (err >= 0) {
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)
svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf);
}
/* Decrease the count, but don't shutdown the
* the service
*/
lockd_down();
out:
/* Decrease the count, but don't shut down the service */
nfsd_serv->sv_nrthreads--;
}
return err < 0 ? err : 0;
}
if (buf[0] == '-' && isdigit(buf[1])) {
char *toclose = kstrdup(buf+1, GFP_KERNEL);
return err;
}
/*
* A '-' followed by the 'name' of a socket means we close the socket.
*/
static ssize_t __write_ports_delfd(char *buf)
{
char *toclose;
int len = 0;
if (!toclose)
toclose = kstrdup(buf + 1, GFP_KERNEL);
if (toclose == NULL)
return -ENOMEM;
if (nfsd_serv)
len = svc_sock_names(buf, nfsd_serv, toclose);
if (nfsd_serv != NULL)
len = svc_sock_names(nfsd_serv, buf,
SIMPLE_TRANSACTION_LIMIT, toclose);
if (len >= 0)
lockd_down();
kfree(toclose);
return len;
}
/*
* Add a transport listener by writing it's transport name
}
/*
* A transport listener is added by writing it's transport name and
* a port number.
*/
if (isalpha(buf[0])) {
int err;
static ssize_t __write_ports_addxprt(char *buf)
{
char transport[16];
int port;
if (sscanf(buf, "%15s %4d", transport, &port) == 2) {
if (port < 1 || port > 65535)
int port, err;
if (sscanf(buf, "%15s %4u", transport, &port) != 2)
return -EINVAL;
if (port < 1 || port > USHORT_MAX)
return -EINVAL;
err = nfsd_create_serv();
if (!err) {
err = svc_create_xprt(nfsd_serv,
transport, PF_INET, port,
SVC_SOCK_ANONYMOUS);
if (err != 0)
return err;
err = svc_create_xprt(nfsd_serv, transport,
PF_INET, port, SVC_SOCK_ANONYMOUS);
if (err < 0) {
/* Give a reasonable perror msg for bad transport string */
if (err == -ENOENT)
/* Give a reasonable perror msg for
* bad transport string */
err = -EPROTONOSUPPORT;
return err;
}
return err < 0 ? err : 0;
}
}
/*
* Remove a transport by writing it's transport name and port number
return 0;
}
/*
* A transport listener is removed by writing a "-", it's transport
* name, and it's port number.
*/
if (buf[0] == '-' && isalpha(buf[1])) {
static ssize_t __write_ports_delxprt(char *buf)
{
struct svc_xprt *xprt;
int err = -EINVAL;
char transport[16];
int port;
if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) {
if (port < 1 || port > 65535)
if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
return -EINVAL;
if (port < 1 || port > USHORT_MAX || nfsd_serv == NULL)
return -EINVAL;
if (nfsd_serv) {
xprt = svc_find_xprt(nfsd_serv, transport,
AF_UNSPEC, port);
if (xprt) {
xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port);
if (xprt == NULL)
return -ENOTCONN;
svc_close_xprt(xprt);
svc_xprt_put(xprt);
err = 0;
} else
err = -ENOTCONN;
}
return err < 0 ? err : 0;
}
}
return 0;
}
static ssize_t __write_ports(struct file *file, char *buf, size_t size)
{
if (size == 0)
return __write_ports_names(buf);
if (isdigit(buf[0]))
return __write_ports_addfd(buf);
if (buf[0] == '-' && isdigit(buf[1]))
return __write_ports_delfd(buf);
if (isalpha(buf[0]))
return __write_ports_addxprt(buf);
if (buf[0] == '-' && isalpha(buf[1]))
return __write_ports_delxprt(buf);
return -EINVAL;
}
......@@ -1030,7 +1092,9 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
* buf: C string containing an unsigned
* integer value representing a bound
* but unconnected socket that is to be
* used as an NFSD listener
* used as an NFSD listener; listen(3)
* must be called for a SOCK_STREAM
* socket, otherwise it is ignored
* size: non-zero length of C string in @buf
* Output:
* On success: NFS service is started;
......@@ -1138,7 +1202,9 @@ static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
nfsd_max_blksize = bsize;
mutex_unlock(&nfsd_mutex);
}
return sprintf(buf, "%d\n", nfsd_max_blksize);
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
nfsd_max_blksize);
}
#ifdef CONFIG_NFSD_V4
......@@ -1162,8 +1228,9 @@ static ssize_t __write_leasetime(struct file *file, char *buf, size_t size)
return -EINVAL;
nfs4_reset_lease(lease);
}
sprintf(buf, "%ld\n", nfs4_lease_time());
return strlen(buf);
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n",
nfs4_lease_time());
}
/**
......@@ -1219,8 +1286,9 @@ static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
status = nfs4_reset_recoverydir(recdir);
}
sprintf(buf, "%s\n", nfs4_recoverydir());
return strlen(buf);
return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
nfs4_recoverydir());
}
/**
......
......@@ -27,9 +27,6 @@
#define NFSDDBG_FACILITY NFSDDBG_FH
static int nfsd_nr_verified;
static int nfsd_nr_put;
/*
* our acceptability function.
* if NOSUBTREECHECK, accept anything
......@@ -251,7 +248,6 @@ static __be32 nfsd_set_fh_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp)
fhp->fh_dentry = dentry;
fhp->fh_export = exp;
nfsd_nr_verified++;
return 0;
out:
exp_put(exp);
......@@ -552,7 +548,6 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
return nfserr_opnotsupp;
}
nfsd_nr_verified++;
return 0;
}
......@@ -609,7 +604,6 @@ fh_put(struct svc_fh *fhp)
fhp->fh_pre_saved = 0;
fhp->fh_post_saved = 0;
#endif
nfsd_nr_put++;
}
if (exp) {
cache_put(&exp->h, &svc_export_cache);
......
......@@ -533,45 +533,179 @@ nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
* NFSv2 Server procedures.
* Only the results of non-idempotent operations are cached.
*/
#define nfsd_proc_none NULL
#define nfssvc_release_none NULL
struct nfsd_void { int dummy; };
#define PROC(name, argt, rest, relt, cache, respsize) \
{ (svc_procfunc) nfsd_proc_##name, \
(kxdrproc_t) nfssvc_decode_##argt, \
(kxdrproc_t) nfssvc_encode_##rest, \
(kxdrproc_t) nfssvc_release_##relt, \
sizeof(struct nfsd_##argt), \
sizeof(struct nfsd_##rest), \
0, \
cache, \
respsize, \
}
#define ST 1 /* status */
#define FH 8 /* filehandle */
#define AT 18 /* attributes */
static struct svc_procedure nfsd_procedures2[18] = {
PROC(null, void, void, none, RC_NOCACHE, ST),
PROC(getattr, fhandle, attrstat, fhandle, RC_NOCACHE, ST+AT),
PROC(setattr, sattrargs, attrstat, fhandle, RC_REPLBUFF, ST+AT),
PROC(none, void, void, none, RC_NOCACHE, ST),
PROC(lookup, diropargs, diropres, fhandle, RC_NOCACHE, ST+FH+AT),
PROC(readlink, readlinkargs, readlinkres, none, RC_NOCACHE, ST+1+NFS_MAXPATHLEN/4),
PROC(read, readargs, readres, fhandle, RC_NOCACHE, ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4),
PROC(none, void, void, none, RC_NOCACHE, ST),
PROC(write, writeargs, attrstat, fhandle, RC_REPLBUFF, ST+AT),
PROC(create, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT),
PROC(remove, diropargs, void, none, RC_REPLSTAT, ST),
PROC(rename, renameargs, void, none, RC_REPLSTAT, ST),
PROC(link, linkargs, void, none, RC_REPLSTAT, ST),
PROC(symlink, symlinkargs, void, none, RC_REPLSTAT, ST),
PROC(mkdir, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT),
PROC(rmdir, diropargs, void, none, RC_REPLSTAT, ST),
PROC(readdir, readdirargs, readdirres, none, RC_NOCACHE, 0),
PROC(statfs, fhandle, statfsres, none, RC_NOCACHE, ST+5),
[NFSPROC_NULL] = {
.pc_func = (svc_procfunc) nfsd_proc_null,
.pc_decode = (kxdrproc_t) nfssvc_decode_void,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_void),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST,
},
[NFSPROC_GETATTR] = {
.pc_func = (svc_procfunc) nfsd_proc_getattr,
.pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT,
},
[NFSPROC_SETATTR] = {
.pc_func = (svc_procfunc) nfsd_proc_setattr,
.pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
.pc_argsize = sizeof(struct nfsd_sattrargs),
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+AT,
},
[NFSPROC_ROOT] = {
.pc_decode = (kxdrproc_t) nfssvc_decode_void,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_void),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST,
},
[NFSPROC_LOOKUP] = {
.pc_func = (svc_procfunc) nfsd_proc_lookup,
.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
.pc_argsize = sizeof(struct nfsd_diropargs),
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+FH+AT,
},
[NFSPROC_READLINK] = {
.pc_func = (svc_procfunc) nfsd_proc_readlink,
.pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres,
.pc_argsize = sizeof(struct nfsd_readlinkargs),
.pc_ressize = sizeof(struct nfsd_readlinkres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
},
[NFSPROC_READ] = {
.pc_func = (svc_procfunc) nfsd_proc_read,
.pc_decode = (kxdrproc_t) nfssvc_decode_readargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_readres,
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
.pc_argsize = sizeof(struct nfsd_readargs),
.pc_ressize = sizeof(struct nfsd_readres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
},
[NFSPROC_WRITECACHE] = {
.pc_decode = (kxdrproc_t) nfssvc_decode_void,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_void),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST,
},
[NFSPROC_WRITE] = {
.pc_func = (svc_procfunc) nfsd_proc_write,
.pc_decode = (kxdrproc_t) nfssvc_decode_writeargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
.pc_argsize = sizeof(struct nfsd_writeargs),
.pc_ressize = sizeof(struct nfsd_attrstat),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+AT,
},
[NFSPROC_CREATE] = {
.pc_func = (svc_procfunc) nfsd_proc_create,
.pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
.pc_argsize = sizeof(struct nfsd_createargs),
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+FH+AT,
},
[NFSPROC_REMOVE] = {
.pc_func = (svc_procfunc) nfsd_proc_remove,
.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_diropargs),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
},
[NFSPROC_RENAME] = {
.pc_func = (svc_procfunc) nfsd_proc_rename,
.pc_decode = (kxdrproc_t) nfssvc_decode_renameargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_renameargs),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
},
[NFSPROC_LINK] = {
.pc_func = (svc_procfunc) nfsd_proc_link,
.pc_decode = (kxdrproc_t) nfssvc_decode_linkargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_linkargs),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
},
[NFSPROC_SYMLINK] = {
.pc_func = (svc_procfunc) nfsd_proc_symlink,
.pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_symlinkargs),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
},
[NFSPROC_MKDIR] = {
.pc_func = (svc_procfunc) nfsd_proc_mkdir,
.pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
.pc_argsize = sizeof(struct nfsd_createargs),
.pc_ressize = sizeof(struct nfsd_diropres),
.pc_cachetype = RC_REPLBUFF,
.pc_xdrressize = ST+FH+AT,
},
[NFSPROC_RMDIR] = {
.pc_func = (svc_procfunc) nfsd_proc_rmdir,
.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
.pc_argsize = sizeof(struct nfsd_diropargs),
.pc_ressize = sizeof(struct nfsd_void),
.pc_cachetype = RC_REPLSTAT,
.pc_xdrressize = ST,
},
[NFSPROC_READDIR] = {
.pc_func = (svc_procfunc) nfsd_proc_readdir,
.pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs,
.pc_encode = (kxdrproc_t) nfssvc_encode_readdirres,
.pc_argsize = sizeof(struct nfsd_readdirargs),
.pc_ressize = sizeof(struct nfsd_readdirres),
.pc_cachetype = RC_NOCACHE,
},
[NFSPROC_STATFS] = {
.pc_func = (svc_procfunc) nfsd_proc_statfs,
.pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
.pc_encode = (kxdrproc_t) nfssvc_encode_statfsres,
.pc_argsize = sizeof(struct nfsd_fhandle),
.pc_ressize = sizeof(struct nfsd_statfsres),
.pc_cachetype = RC_NOCACHE,
.pc_xdrressize = ST+5,
},
};
......
......@@ -390,11 +390,13 @@ nfsd_svc(unsigned short port, int nrservs)
mutex_lock(&nfsd_mutex);
dprintk("nfsd: creating service\n");
error = -EINVAL;
if (nrservs <= 0)
nrservs = 0;
if (nrservs > NFSD_MAXSERVS)
nrservs = NFSD_MAXSERVS;
error = 0;
if (nrservs == 0 && nfsd_serv == NULL)
goto out;
/* Readahead param cache - will no-op if it already exists */
error = nfsd_racache_init(2*nrservs);
......@@ -413,6 +415,12 @@ nfsd_svc(unsigned short port, int nrservs)
goto failure;
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:
svc_destroy(nfsd_serv); /* Release server */
out:
......
......@@ -966,6 +966,43 @@ static void kill_suid(struct dentry *dentry)
mutex_unlock(&dentry->d_inode->i_mutex);
}
/*
* Gathered writes: If another process is currently writing to the file,
* there's a high chance this is another nfsd (triggered by a bulk write
* from a client's biod). Rather than syncing the file with each write
* request, we sleep for 10 msec.
*
* I don't know if this roughly approximates C. Juszak's idea of
* gathered writes, but it's a nice and simple solution (IMHO), and it
* seems to work:-)
*
* Note: we do this only in the NFSv2 case, since v3 and higher have a
* better tool (separate unstable writes and commits) for solving this
* problem.
*/
static int wait_for_concurrent_writes(struct file *file)
{
struct inode *inode = file->f_path.dentry->d_inode;
static ino_t last_ino;
static dev_t last_dev;
int err = 0;
if (atomic_read(&inode->i_writecount) > 1
|| (last_ino == inode->i_ino && last_dev == inode->i_sb->s_dev)) {
dprintk("nfsd: write defer %d\n", task_pid_nr(current));
msleep(10);
dprintk("nfsd: write resume %d\n", task_pid_nr(current));
}
if (inode->i_state & I_DIRTY) {
dprintk("nfsd: write sync %d\n", task_pid_nr(current));
err = nfsd_sync(file);
}
last_ino = inode->i_ino;
last_dev = inode->i_sb->s_dev;
return err;
}
static __be32
nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
loff_t offset, struct kvec *vec, int vlen,
......@@ -978,6 +1015,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
__be32 err = 0;
int host_err;
int stable = *stablep;
int use_wgather;
#ifdef MSNFS
err = nfserr_perm;
......@@ -996,9 +1034,10 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
* - the sync export option has been set, or
* - the client requested O_SYNC behavior (NFSv3 feature).
* - The file system doesn't support fsync().
* When gathered writes have been configured for this volume,
* When NFSv2 gathered writes have been configured for this volume,
* flushing the data to disk is handled separately below.
*/
use_wgather = (rqstp->rq_vers == 2) && EX_WGATHER(exp);
if (!file->f_op->fsync) {/* COMMIT3 cannot work */
stable = 2;
......@@ -1007,7 +1046,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
if (!EX_ISSYNC(exp))
stable = 0;
if (stable && !EX_WGATHER(exp)) {
if (stable && !use_wgather) {
spin_lock(&file->f_lock);
file->f_flags |= O_SYNC;
spin_unlock(&file->f_lock);
......@@ -1017,52 +1056,20 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
oldfs = get_fs(); set_fs(KERNEL_DS);
host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset);
set_fs(oldfs);
if (host_err >= 0) {
if (host_err < 0)
goto out_nfserr;
*cnt = host_err;
nfsdstats.io_write += host_err;
fsnotify_modify(file->f_path.dentry);
}
/* clear setuid/setgid flag after write */
if (host_err >= 0 && (inode->i_mode & (S_ISUID | S_ISGID)))
if (inode->i_mode & (S_ISUID | S_ISGID))
kill_suid(dentry);
if (host_err >= 0 && stable) {
static ino_t last_ino;
static dev_t last_dev;
/*
* Gathered writes: If another process is currently
* writing to the file, there's a high chance
* this is another nfsd (triggered by a bulk write
* from a client's biod). Rather than syncing the
* file with each write request, we sleep for 10 msec.
*
* I don't know if this roughly approximates
* C. Juszak's idea of gathered writes, but it's a
* nice and simple solution (IMHO), and it seems to
* work:-)
*/
if (EX_WGATHER(exp)) {
if (atomic_read(&inode->i_writecount) > 1
|| (last_ino == inode->i_ino && last_dev == inode->i_sb->s_dev)) {
dprintk("nfsd: write defer %d\n", task_pid_nr(current));
msleep(10);
dprintk("nfsd: write resume %d\n", task_pid_nr(current));
}
if (inode->i_state & I_DIRTY) {
dprintk("nfsd: write sync %d\n", task_pid_nr(current));
host_err=nfsd_sync(file);
}
#if 0
wake_up(&inode->i_wait);
#endif
}
last_ino = inode->i_ino;
last_dev = inode->i_sb->s_dev;
}
if (stable && use_wgather)
host_err = wait_for_concurrent_writes(file);
out_nfserr:
dprintk("nfsd: write complete host_err=%d\n", host_err);
if (host_err >= 0)
err = 0;
......
......@@ -1107,6 +1107,7 @@ extern void locks_copy_lock(struct file_lock *, struct file_lock *);
extern void __locks_copy_lock(struct file_lock *, const struct file_lock *);
extern void locks_remove_posix(struct file *, fl_owner_t);
extern void locks_remove_flock(struct file *);
extern void locks_release_private(struct file_lock *);
extern void posix_test_lock(struct file *, struct file_lock *);
extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
extern int posix_lock_file_wait(struct file *, struct file_lock *);
......
......@@ -14,8 +14,7 @@
#include <linux/uio.h>
/*
* Representation of a reply cache entry. The first two members *must*
* be hash_next and hash_prev.
* Representation of a reply cache entry.
*/
struct svc_cacherep {
struct hlist_node c_hash;
......
......@@ -151,9 +151,15 @@ typedef struct svc_fh {
__u64 fh_pre_size; /* size before operation */
struct timespec fh_pre_mtime; /* mtime before oper */
struct timespec fh_pre_ctime; /* ctime before oper */
/*
* pre-op nfsv4 change attr: note must check IS_I_VERSION(inode)
* to find out if it is valid.
*/
u64 fh_pre_change;
/* Post-op attributes saved in fh_unlock */
struct kstat fh_post_attr; /* full attrs after operation */
u64 fh_post_change; /* nfsv4 change; see above */
#endif /* CONFIG_NFSD_V3 */
} svc_fh;
......@@ -298,6 +304,7 @@ fill_pre_wcc(struct svc_fh *fhp)
fhp->fh_pre_mtime = inode->i_mtime;
fhp->fh_pre_ctime = inode->i_ctime;
fhp->fh_pre_size = inode->i_size;
fhp->fh_pre_change = inode->i_version;
fhp->fh_pre_saved = 1;
}
}
......
......@@ -60,15 +60,6 @@ typedef struct {
#define si_stateownerid si_opaque.so_stateownerid
#define si_fileid si_opaque.so_fileid
struct nfs4_cb_recall {
u32 cbr_ident;
int cbr_trunc;
stateid_t cbr_stateid;
struct knfsd_fh cbr_fh;
struct nfs4_delegation *cbr_dp;
};
struct nfs4_delegation {
struct list_head dl_perfile;
struct list_head dl_perclnt;
......@@ -80,22 +71,25 @@ struct nfs4_delegation {
struct file *dl_vfs_file;
u32 dl_type;
time_t dl_time;
struct nfs4_cb_recall dl_recall;
/* For recall: */
u32 dl_ident;
stateid_t dl_stateid;
struct knfsd_fh dl_fh;
int dl_retries;
};
#define dl_stateid dl_recall.cbr_stateid
#define dl_fh dl_recall.cbr_fh
/* client delegation callback info */
struct nfs4_callback {
struct nfs4_cb_conn {
/* SETCLIENTID info */
u32 cb_addr;
unsigned short cb_port;
u32 cb_prog;
u32 cb_ident;
u32 cb_minorversion;
u32 cb_ident; /* minorversion 0 only */
/* RPC client info */
atomic_t cb_set; /* successful CB_NULL call */
struct rpc_clnt * cb_client;
struct rpc_cred * cb_cred;
};
/* Maximum number of slots per session. 128 is useful for long haul TCP */
......@@ -121,6 +115,17 @@ struct nfsd4_slot {
struct nfsd4_cache_entry sl_cache_entry;
};
struct nfsd4_channel_attrs {
u32 headerpadsz;
u32 maxreq_sz;
u32 maxresp_sz;
u32 maxresp_cached;
u32 maxops;
u32 maxreqs;
u32 nr_rdma_attrs;
u32 rdma_attrs;
};
struct nfsd4_session {
struct kref se_ref;
struct list_head se_hash; /* hash by sessionid */
......@@ -128,11 +133,8 @@ struct nfsd4_session {
u32 se_flags;
struct nfs4_client *se_client; /* for expire_client */
struct nfs4_sessionid se_sessionid;
u32 se_fmaxreq_sz;
u32 se_fmaxresp_sz;
u32 se_fmaxresp_cached;
u32 se_fmaxops;
u32 se_fnumslots;
struct nfsd4_channel_attrs se_fchannel;
struct nfsd4_channel_attrs se_bchannel;
struct nfsd4_slot se_slots[]; /* forward channel slots */
};
......@@ -184,7 +186,7 @@ struct nfs4_client {
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */
struct nfs4_callback cl_callback; /* callback info */
struct nfs4_cb_conn cl_cb_conn; /* callback info */
atomic_t cl_count; /* ref count */
u32 cl_firststate; /* recovery dir creation */
......
......@@ -64,10 +64,13 @@ static inline bool nfsd4_has_session(struct nfsd4_compound_state *cs)
struct nfsd4_change_info {
u32 atomic;
bool change_supported;
u32 before_ctime_sec;
u32 before_ctime_nsec;
u64 before_change;
u32 after_ctime_sec;
u32 after_ctime_nsec;
u64 after_change;
};
struct nfsd4_access {
......@@ -363,17 +366,6 @@ struct nfsd4_exchange_id {
int spa_how;
};
struct nfsd4_channel_attrs {
u32 headerpadsz;
u32 maxreq_sz;
u32 maxresp_sz;
u32 maxresp_cached;
u32 maxops;
u32 maxreqs;
u32 nr_rdma_attrs;
u32 rdma_attrs;
};
struct nfsd4_create_session {
clientid_t clientid;
struct nfs4_sessionid sessionid;
......@@ -503,10 +495,16 @@ set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
{
BUG_ON(!fhp->fh_pre_saved || !fhp->fh_post_saved);
cinfo->atomic = 1;
cinfo->change_supported = IS_I_VERSION(fhp->fh_dentry->d_inode);
if (cinfo->change_supported) {
cinfo->before_change = fhp->fh_pre_change;
cinfo->after_change = fhp->fh_post_change;
} else {
cinfo->before_ctime_sec = fhp->fh_pre_ctime.tv_sec;
cinfo->before_ctime_nsec = fhp->fh_pre_ctime.tv_nsec;
cinfo->after_ctime_sec = fhp->fh_post_attr.ctime.tv_sec;
cinfo->after_ctime_nsec = fhp->fh_post_attr.ctime.tv_nsec;
}
}
int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
......
......@@ -83,7 +83,7 @@ int svc_port_is_privileged(struct sockaddr *sin);
int svc_print_xprts(char *buf, int maxlen);
struct svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
const sa_family_t af, const unsigned short port);
int svc_xprt_names(struct svc_serv *serv, char *buf, int buflen);
int svc_xprt_names(struct svc_serv *serv, char *buf, const int buflen);
static inline void svc_xprt_get(struct svc_xprt *xprt)
{
......@@ -118,7 +118,7 @@ static inline unsigned short svc_addr_port(const struct sockaddr *sa)
return 0;
}
static inline size_t svc_addr_len(struct sockaddr *sa)
static inline size_t svc_addr_len(const struct sockaddr *sa)
{
switch (sa->sa_family) {
case AF_INET:
......@@ -126,7 +126,8 @@ static inline size_t svc_addr_len(struct sockaddr *sa)
case AF_INET6:
return sizeof(struct sockaddr_in6);
}
return -EAFNOSUPPORT;
return 0;
}
static inline unsigned short svc_xprt_local_port(const struct svc_xprt *xprt)
......
......@@ -38,8 +38,11 @@ int svc_recv(struct svc_rqst *, long);
int svc_send(struct svc_rqst *);
void svc_drop(struct svc_rqst *);
void svc_sock_update_bufs(struct svc_serv *serv);
int svc_sock_names(char *buf, struct svc_serv *serv, char *toclose);
int svc_addsock(struct svc_serv *serv, int fd, char *name_return);
int svc_sock_names(struct svc_serv *serv, char *buf,
const size_t buflen,
const char *toclose);
int svc_addsock(struct svc_serv *serv, const int fd,
char *name_return, const size_t len);
void svc_init_xprt_sock(void);
void svc_cleanup_xprt_sock(void);
struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot);
......
......@@ -488,7 +488,7 @@ static void do_cache_clean(struct work_struct *work)
{
int delay = 5;
if (cache_clean() == -1)
delay = 30*HZ;
delay = round_jiffies_relative(30*HZ);
if (list_empty(&cache_list))
delay = 0;
......
......@@ -11,6 +11,7 @@
#include <net/sock.h>
#include <linux/sunrpc/stats.h>
#include <linux/sunrpc/svc_xprt.h>
#include <linux/sunrpc/svcsock.h>
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
......@@ -1097,36 +1098,58 @@ struct svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
}
EXPORT_SYMBOL_GPL(svc_find_xprt);
/*
* Format a buffer with a list of the active transports. A zero for
* the buflen parameter disables target buffer overflow checking.
static int svc_one_xprt_name(const struct svc_xprt *xprt,
char *pos, int remaining)
{
int len;
len = snprintf(pos, remaining, "%s %u\n",
xprt->xpt_class->xcl_name,
svc_xprt_local_port(xprt));
if (len >= remaining)
return -ENAMETOOLONG;
return len;
}
/**
* svc_xprt_names - format a buffer with a list of transport names
* @serv: pointer to an RPC service
* @buf: pointer to a buffer to be filled in
* @buflen: length of buffer to be filled in
*
* Fills in @buf with a string containing a list of transport names,
* each name terminated with '\n'.
*
* Returns positive length of the filled-in string on success; otherwise
* a negative errno value is returned if an error occurs.
*/
int svc_xprt_names(struct svc_serv *serv, char *buf, int buflen)
int svc_xprt_names(struct svc_serv *serv, char *buf, const int buflen)
{
struct svc_xprt *xprt;
char xprt_str[64];
int totlen = 0;
int len;
int len, totlen;
char *pos;
/* Sanity check args */
if (!serv)
return 0;
spin_lock_bh(&serv->sv_lock);
pos = buf;
totlen = 0;
list_for_each_entry(xprt, &serv->sv_permsocks, xpt_list) {
len = snprintf(xprt_str, sizeof(xprt_str),
"%s %d\n", xprt->xpt_class->xcl_name,
svc_xprt_local_port(xprt));
/* If the string was truncated, replace with error string */
if (len >= sizeof(xprt_str))
strcpy(xprt_str, "name-too-long\n");
/* Don't overflow buffer */
len = strlen(xprt_str);
if (buflen && (len + totlen >= buflen))
len = svc_one_xprt_name(xprt, pos, buflen - totlen);
if (len < 0) {
*buf = '\0';
totlen = len;
}
if (len <= 0)
break;
strcpy(buf+totlen, xprt_str);
pos += len;
totlen += len;
}
spin_unlock_bh(&serv->sv_lock);
return totlen;
}
......
......@@ -240,42 +240,76 @@ static int svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
/*
* Report socket names for nfsdfs
*/
static int one_sock_name(char *buf, struct svc_sock *svsk)
static int svc_one_sock_name(struct svc_sock *svsk, char *buf, int remaining)
{
const struct sock *sk = svsk->sk_sk;
const char *proto_name = sk->sk_protocol == IPPROTO_UDP ?
"udp" : "tcp";
int len;
switch(svsk->sk_sk->sk_family) {
case AF_INET:
len = sprintf(buf, "ipv4 %s %pI4 %d\n",
svsk->sk_sk->sk_protocol == IPPROTO_UDP ?
"udp" : "tcp",
&inet_sk(svsk->sk_sk)->rcv_saddr,
inet_sk(svsk->sk_sk)->num);
switch (sk->sk_family) {
case PF_INET:
len = snprintf(buf, remaining, "ipv4 %s %pI4 %d\n",
proto_name,
&inet_sk(sk)->rcv_saddr,
inet_sk(sk)->num);
break;
case PF_INET6:
len = snprintf(buf, remaining, "ipv6 %s %pI6 %d\n",
proto_name,
&inet6_sk(sk)->rcv_saddr,
inet_sk(sk)->num);
break;
default:
len = sprintf(buf, "*unknown-%d*\n",
svsk->sk_sk->sk_family);
len = snprintf(buf, remaining, "*unknown-%d*\n",
sk->sk_family);
}
if (len >= remaining) {
*buf = '\0';
return -ENAMETOOLONG;
}
return len;
}
int
svc_sock_names(char *buf, struct svc_serv *serv, char *toclose)
/**
* svc_sock_names - construct a list of listener names in a string
* @serv: pointer to RPC service
* @buf: pointer to a buffer to fill in with socket names
* @buflen: size of the buffer to be filled
* @toclose: pointer to '\0'-terminated C string containing the name
* of a listener to be closed
*
* Fills in @buf with a '\n'-separated list of names of listener
* sockets. If @toclose is not NULL, the socket named by @toclose
* is closed, and is not included in the output list.
*
* Returns positive length of the socket name string, or a negative
* errno value on error.
*/
int svc_sock_names(struct svc_serv *serv, char *buf, const size_t buflen,
const char *toclose)
{
struct svc_sock *svsk, *closesk = NULL;
int len = 0;
if (!serv)
return 0;
spin_lock_bh(&serv->sv_lock);
list_for_each_entry(svsk, &serv->sv_permsocks, sk_xprt.xpt_list) {
int onelen = one_sock_name(buf+len, svsk);
if (toclose && strcmp(toclose, buf+len) == 0)
int onelen = svc_one_sock_name(svsk, buf + len, buflen - len);
if (onelen < 0) {
len = onelen;
break;
}
if (toclose && strcmp(toclose, buf + len) == 0)
closesk = svsk;
else
len += onelen;
}
spin_unlock_bh(&serv->sv_lock);
if (closesk)
/* Should unregister with portmap, but you cannot
* unregister just one protocol...
......@@ -346,6 +380,7 @@ static void svc_sock_setbufsize(struct socket *sock, unsigned int snd,
sock->sk->sk_sndbuf = snd * 2;
sock->sk->sk_rcvbuf = rcv * 2;
sock->sk->sk_userlocks |= SOCK_SNDBUF_LOCK|SOCK_RCVBUF_LOCK;
sock->sk->sk_write_space(sock->sk);
release_sock(sock->sk);
#endif
}
......@@ -387,6 +422,15 @@ static void svc_write_space(struct sock *sk)
}
}
static void svc_tcp_write_space(struct sock *sk)
{
struct socket *sock = sk->sk_socket;
if (sk_stream_wspace(sk) >= sk_stream_min_wspace(sk) && sock)
clear_bit(SOCK_NOSPACE, &sock->flags);
svc_write_space(sk);
}
/*
* Copy the UDP datagram's destination address to the rqstp structure.
* The 'destination' address in this case is the address to which the
......@@ -427,13 +471,14 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
long all[SVC_PKTINFO_SPACE / sizeof(long)];
} buffer;
struct cmsghdr *cmh = &buffer.hdr;
int err, len;
struct msghdr msg = {
.msg_name = svc_addr(rqstp),
.msg_control = cmh,
.msg_controllen = sizeof(buffer),
.msg_flags = MSG_DONTWAIT,
};
size_t len;
int err;
if (test_and_clear_bit(XPT_CHNGBUF, &svsk->sk_xprt.xpt_flags))
/* udp sockets need large rcvbuf as all pending
......@@ -465,8 +510,8 @@ static int svc_udp_recvfrom(struct svc_rqst *rqstp)
return -EAGAIN;
}
len = svc_addr_len(svc_addr(rqstp));
if (len < 0)
return len;
if (len == 0)
return -EAFNOSUPPORT;
rqstp->rq_addrlen = len;
if (skb->tstamp.tv64 == 0) {
skb->tstamp = ktime_get_real();
......@@ -982,23 +1027,14 @@ static int svc_tcp_has_wspace(struct svc_xprt *xprt)
struct svc_sock *svsk = container_of(xprt, struct svc_sock, sk_xprt);
struct svc_serv *serv = svsk->sk_xprt.xpt_server;
int required;
int wspace;
/*
* Set the SOCK_NOSPACE flag before checking the available
* sock space.
*/
if (test_bit(XPT_LISTENER, &xprt->xpt_flags))
return 1;
required = atomic_read(&xprt->xpt_reserved) + serv->sv_max_mesg;
if (sk_stream_wspace(svsk->sk_sk) >= required)
return 1;
set_bit(SOCK_NOSPACE, &svsk->sk_sock->flags);
required = atomic_read(&svsk->sk_xprt.xpt_reserved) + serv->sv_max_mesg;
wspace = sk_stream_wspace(svsk->sk_sk);
if (wspace < sk_stream_min_wspace(svsk->sk_sk))
return 0;
if (required * 2 > wspace)
return 0;
clear_bit(SOCK_NOSPACE, &svsk->sk_sock->flags);
return 1;
}
static struct svc_xprt *svc_tcp_create(struct svc_serv *serv,
......@@ -1054,7 +1090,7 @@ static void svc_tcp_init(struct svc_sock *svsk, struct svc_serv *serv)
dprintk("setting up TCP socket for reading\n");
sk->sk_state_change = svc_tcp_state_change;
sk->sk_data_ready = svc_tcp_data_ready;
sk->sk_write_space = svc_write_space;
sk->sk_write_space = svc_tcp_write_space;
svsk->sk_reclen = 0;
svsk->sk_tcplen = 0;
......@@ -1148,9 +1184,19 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
return svsk;
}
int svc_addsock(struct svc_serv *serv,
int fd,
char *name_return)
/**
* svc_addsock - add a listener socket to an RPC service
* @serv: pointer to RPC service to which to add a new listener
* @fd: file descriptor of the new listener
* @name_return: pointer to buffer to fill in with name of listener
* @len: size of the buffer
*
* Fills in socket name and returns positive length of name if successful.
* Name is terminated with '\n'. On error, returns a negative errno
* value.
*/
int svc_addsock(struct svc_serv *serv, const int fd, char *name_return,
const size_t len)
{
int err = 0;
struct socket *so = sockfd_lookup(fd, &err);
......@@ -1190,7 +1236,7 @@ int svc_addsock(struct svc_serv *serv,
sockfd_put(so);
return err;
}
return one_sock_name(name_return, svsk);
return svc_one_sock_name(svsk, name_return, len);
}
EXPORT_SYMBOL_GPL(svc_addsock);
......
......@@ -397,14 +397,14 @@ static int rdma_read_xdr(struct svcxprt_rdma *xprt,
if (!ch)
return 0;
/* Allocate temporary reply and chunk maps */
rpl_map = svc_rdma_get_req_map();
chl_map = svc_rdma_get_req_map();
svc_rdma_rcl_chunk_counts(ch, &ch_count, &byte_count);
if (ch_count > RPCSVC_MAXPAGES)
return -EINVAL;
/* Allocate temporary reply and chunk maps */
rpl_map = svc_rdma_get_req_map();
chl_map = svc_rdma_get_req_map();
if (!xprt->sc_frmr_pg_list_len)
sge_count = map_read_chunks(xprt, rqstp, hdr_ctxt, rmsgp,
rpl_map, chl_map, ch_count,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment