/*
- * fs/nfs/nfs4xdr.c
- *
* Server-side XDR for NFSv4
*
* Copyright (c) 2002 The Regents of the University of Michigan.
#include <linux/fs.h>
#include <linux/namei.h>
#include <linux/vfs.h>
+#include <linux/utsname.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/svc.h>
#include <linux/sunrpc/clnt.h>
return p;
}
+static int zero_clientid(clientid_t *clid)
+{
+ return (clid->cl_boot == 0) && (clid->cl_id == 0);
+}
+
static int
defer_free(struct nfsd4_compoundargs *argp,
void (*release)(const void *), void *p)
bmval[0] = 0;
bmval[1] = 0;
+ bmval[2] = 0;
READ_BUF(4);
READ32(bmlen);
READ32(bmval[0]);
if (bmlen > 1)
READ32(bmval[1]);
+ if (bmlen > 2)
+ READ32(bmval[2]);
DECODE_TAIL;
}
+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
-nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr,
- struct nfs4_acl **acl)
+nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable,
+ struct iattr *iattr, struct nfs4_acl **acl)
{
int expected_len, len = 0;
u32 dummy32;
* According to spec, unsupported attributes return ERR_ATTRNOTSUPP;
* read-only attributes return ERR_INVAL.
*/
- if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
+ if ((bmval[0] & ~nfsd_suppattrs0(argp->minorversion)) ||
+ (bmval[1] & ~nfsd_suppattrs1(argp->minorversion)) ||
+ (bmval[2] & ~nfsd_suppattrs2(argp->minorversion)))
return nfserr_attrnotsupp;
- if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1))
+ if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
+ (bmval[2] & ~writable[2]))
return nfserr_inval;
READ_BUF(4);
goto xdr_error;
}
}
- if (bmval[1] & FATTR4_WORD1_TIME_METADATA) {
- /* We require the high 32 bits of 'seconds' to be 0, and we ignore
- all 32 bits of 'nseconds'. */
- READ_BUF(12);
- len += 12;
- READ32(dummy32);
- if (dummy32)
- return nfserr_inval;
- READ32(iattr->ia_ctime.tv_sec);
- READ32(iattr->ia_ctime.tv_nsec);
- if (iattr->ia_ctime.tv_nsec >= (u32)1000000000)
- return nfserr_inval;
- iattr->ia_valid |= ATTR_CTIME;
- }
if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) {
READ_BUF(4);
len += 4;
goto xdr_error;
}
}
+ BUG_ON(bmval[2]); /* no such writeable attr supported yet */
if (len != expected_len)
goto xdr_error;
}
static __be32
+nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid)
+{
+ DECODE_HEAD;
+
+ READ_BUF(sizeof(stateid_t));
+ READ32(sid->si_generation);
+ COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+
+ DECODE_TAIL;
+}
+
+static __be32
nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access)
{
DECODE_HEAD;
DECODE_HEAD;
close->cl_stateowner = NULL;
- READ_BUF(4 + sizeof(stateid_t));
+ READ_BUF(4);
READ32(close->cl_seqid);
- READ32(close->cl_stateid.si_generation);
- COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
+ return nfsd4_decode_stateid(argp, &close->cl_stateid);
DECODE_TAIL;
}
if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
return status;
- if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl)))
+ status = nfsd4_decode_fattr(argp, create->cr_bmval, nfsd_attrmask,
+ &create->cr_iattr, &create->cr_acl);
+ if (status)
goto out;
DECODE_TAIL;
static inline __be32
nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr)
{
- DECODE_HEAD;
-
- READ_BUF(sizeof(stateid_t));
- READ32(dr->dr_stateid.si_generation);
- COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t));
-
- DECODE_TAIL;
+ return nfsd4_decode_stateid(argp, &dr->dr_stateid);
}
static inline __be32
READ32(lock->lk_is_new);
if (lock->lk_is_new) {
- READ_BUF(36);
+ READ_BUF(4);
READ32(lock->lk_new_open_seqid);
- READ32(lock->lk_new_open_stateid.si_generation);
-
- COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid);
+ if (status)
+ return status;
+ READ_BUF(8 + sizeof(clientid_t));
READ32(lock->lk_new_lock_seqid);
COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t));
READ32(lock->lk_new_owner.len);
READ_BUF(lock->lk_new_owner.len);
READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len);
} else {
- READ_BUF(20);
- READ32(lock->lk_old_lock_stateid.si_generation);
- COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(lock->lk_old_lock_seqid);
}
READ_BUF(lockt->lt_owner.len);
READMEM(lockt->lt_owner.data, lockt->lt_owner.len);
+ if (argp->minorversion && !zero_clientid(&lockt->lt_clientid))
+ return nfserr_inval;
DECODE_TAIL;
}
DECODE_HEAD;
locku->lu_stateowner = NULL;
- READ_BUF(24 + sizeof(stateid_t));
+ READ_BUF(8);
READ32(locku->lu_type);
if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT))
goto xdr_error;
READ32(locku->lu_seqid);
- READ32(locku->lu_stateid.si_generation);
- COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &locku->lu_stateid);
+ if (status)
+ return status;
+ READ_BUF(16);
READ64(locku->lu_offset);
READ64(locku->lu_length);
switch (open->op_createmode) {
case NFS4_CREATE_UNCHECKED:
case NFS4_CREATE_GUARDED:
- if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl)))
+ status = nfsd4_decode_fattr(argp, open->op_bmval,
+ nfsd_attrmask, &open->op_iattr, &open->op_acl);
+ if (status)
goto out;
break;
case NFS4_CREATE_EXCLUSIVE:
READ_BUF(8);
COPYMEM(open->op_verf.data, 8);
break;
+ case NFS4_CREATE_EXCLUSIVE4_1:
+ if (argp->minorversion < 1)
+ goto xdr_error;
+ READ_BUF(8);
+ COPYMEM(open->op_verf.data, 8);
+ status = nfsd4_decode_fattr(argp, open->op_bmval,
+ nfsd41_ex_attrmask, &open->op_iattr,
+ &open->op_acl);
+ if (status)
+ goto out;
+ break;
default:
goto xdr_error;
}
READ32(open->op_delegate_type);
break;
case NFS4_OPEN_CLAIM_DELEGATE_CUR:
- READ_BUF(sizeof(stateid_t) + 4);
- COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(open->op_fname.len);
READ_BUF(open->op_fname.len);
SAVEMEM(open->op_fname.data, open->op_fname.len);
DECODE_HEAD;
open_conf->oc_stateowner = NULL;
- READ_BUF(4 + sizeof(stateid_t));
- READ32(open_conf->oc_req_stateid.si_generation);
- COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid);
+ if (status)
+ return status;
+ READ_BUF(4);
READ32(open_conf->oc_seqid);
DECODE_TAIL;
DECODE_HEAD;
open_down->od_stateowner = NULL;
- READ_BUF(12 + sizeof(stateid_t));
- READ32(open_down->od_stateid.si_generation);
- COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &open_down->od_stateid);
+ if (status)
+ return status;
+ READ_BUF(12);
READ32(open_down->od_seqid);
READ32(open_down->od_share_access);
READ32(open_down->od_share_deny);
{
DECODE_HEAD;
- READ_BUF(sizeof(stateid_t) + 12);
- READ32(read->rd_stateid.si_generation);
- COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &read->rd_stateid);
+ if (status)
+ return status;
+ READ_BUF(12);
READ64(read->rd_offset);
READ32(read->rd_length);
static __be32
nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)
{
- DECODE_HEAD;
-
- READ_BUF(sizeof(stateid_t));
- READ32(setattr->sa_stateid.si_generation);
- COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t));
- if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl)))
- goto out;
+ __be32 status;
- DECODE_TAIL;
+ status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
+ if (status)
+ return status;
+ return nfsd4_decode_fattr(argp, setattr->sa_bmval, nfsd_attrmask,
+ &setattr->sa_iattr, &setattr->sa_acl);
}
static __be32
int len;
DECODE_HEAD;
- READ_BUF(sizeof(stateid_opaque_t) + 20);
- READ32(write->wr_stateid.si_generation);
- COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t));
+ status = nfsd4_decode_stateid(argp, &write->wr_stateid);
+ if (status)
+ return status;
+ READ_BUF(16);
READ64(write->wr_offset);
READ32(write->wr_stable_how);
if (write->wr_stable_how > 2)
READ_BUF(rlockowner->rl_owner.len);
READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len);
+ if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid))
+ return nfserr_inval;
DECODE_TAIL;
}
static __be32
+nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,
+ struct nfsd4_exchange_id *exid)
+{
+ int dummy;
+ DECODE_HEAD;
+
+ READ_BUF(NFS4_VERIFIER_SIZE);
+ COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE);
+
+ READ_BUF(4);
+ READ32(exid->clname.len);
+
+ READ_BUF(exid->clname.len);
+ SAVEMEM(exid->clname.data, exid->clname.len);
+
+ READ_BUF(4);
+ READ32(exid->flags);
+
+ /* Ignore state_protect4_a */
+ READ_BUF(4);
+ READ32(exid->spa_how);
+ switch (exid->spa_how) {
+ case SP4_NONE:
+ break;
+ case SP4_MACH_CRED:
+ /* spo_must_enforce */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ /* spo_must_allow */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+ break;
+ case SP4_SSV:
+ /* ssp_ops */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ p += dummy;
+
+ /* ssp_hash_algs<> */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* ssp_encr_algs<> */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* ssp_window and ssp_num_gss_handles */
+ READ_BUF(8);
+ READ32(dummy);
+ READ32(dummy);
+ break;
+ default:
+ goto xdr_error;
+ }
+
+ /* Ignore Implementation ID */
+ READ_BUF(4); /* nfs_impl_id4 array length */
+ READ32(dummy);
+
+ if (dummy > 1)
+ goto xdr_error;
+
+ if (dummy == 1) {
+ /* nii_domain */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* nii_name */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+
+ /* nii_date */
+ READ_BUF(12);
+ p += 3;
+ }
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,
+ struct nfsd4_create_session *sess)
+{
+ DECODE_HEAD;
+
+ u32 dummy;
+ char *machine_name;
+ int i;
+ int nr_secflavs;
+
+ READ_BUF(16);
+ COPYMEM(&sess->clientid, 8);
+ READ32(sess->seqid);
+ READ32(sess->flags);
+
+ /* Fore channel attrs */
+ READ_BUF(28);
+ READ32(dummy); /* headerpadsz is always 0 */
+ READ32(sess->fore_channel.maxreq_sz);
+ READ32(sess->fore_channel.maxresp_sz);
+ READ32(sess->fore_channel.maxresp_cached);
+ READ32(sess->fore_channel.maxops);
+ READ32(sess->fore_channel.maxreqs);
+ READ32(sess->fore_channel.nr_rdma_attrs);
+ if (sess->fore_channel.nr_rdma_attrs == 1) {
+ READ_BUF(4);
+ READ32(sess->fore_channel.rdma_attrs);
+ } else if (sess->fore_channel.nr_rdma_attrs > 1) {
+ dprintk("Too many fore channel attr bitmaps!\n");
+ goto xdr_error;
+ }
+
+ /* Back channel attrs */
+ READ_BUF(28);
+ READ32(dummy); /* headerpadsz is always 0 */
+ READ32(sess->back_channel.maxreq_sz);
+ READ32(sess->back_channel.maxresp_sz);
+ READ32(sess->back_channel.maxresp_cached);
+ READ32(sess->back_channel.maxops);
+ READ32(sess->back_channel.maxreqs);
+ READ32(sess->back_channel.nr_rdma_attrs);
+ if (sess->back_channel.nr_rdma_attrs == 1) {
+ READ_BUF(4);
+ READ32(sess->back_channel.rdma_attrs);
+ } else if (sess->back_channel.nr_rdma_attrs > 1) {
+ dprintk("Too many back channel attr bitmaps!\n");
+ goto xdr_error;
+ }
+
+ READ_BUF(8);
+ READ32(sess->callback_prog);
+
+ /* callback_sec_params4 */
+ READ32(nr_secflavs);
+ for (i = 0; i < nr_secflavs; ++i) {
+ READ_BUF(4);
+ READ32(dummy);
+ switch (dummy) {
+ case RPC_AUTH_NULL:
+ /* Nothing to read */
+ break;
+ case RPC_AUTH_UNIX:
+ READ_BUF(8);
+ /* stamp */
+ READ32(dummy);
+
+ /* machine name */
+ READ32(dummy);
+ READ_BUF(dummy);
+ SAVEMEM(machine_name, dummy);
+
+ /* uid, gid */
+ READ_BUF(8);
+ READ32(sess->uid);
+ READ32(sess->gid);
+
+ /* more gids */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy * 4);
+ for (i = 0; i < dummy; ++i)
+ READ32(dummy);
+ break;
+ case RPC_AUTH_GSS:
+ dprintk("RPC_AUTH_GSS callback secflavor "
+ "not supported!\n");
+ READ_BUF(8);
+ /* gcbp_service */
+ READ32(dummy);
+ /* gcbp_handle_from_server */
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+ /* gcbp_handle_from_client */
+ READ_BUF(4);
+ READ32(dummy);
+ READ_BUF(dummy);
+ p += XDR_QUADLEN(dummy);
+ break;
+ default:
+ dprintk("Illegal callback secflavor\n");
+ return nfserr_inval;
+ }
+ }
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,
+ struct nfsd4_destroy_session *destroy_session)
+{
+ DECODE_HEAD;
+ READ_BUF(NFS4_MAX_SESSIONID_LEN);
+ COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
+ struct nfsd4_sequence *seq)
+{
+ DECODE_HEAD;
+
+ READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
+ COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ READ32(seq->seqid);
+ READ32(seq->slotid);
+ READ32(seq->maxslots);
+ READ32(seq->cachethis);
+
+ DECODE_TAIL;
+}
+
+static __be32
+nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p)
+{
+ return nfs_ok;
+}
+
+static __be32
+nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
+{
+ return nfserr_notsupp;
+}
+
+typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
+
+static nfsd4_dec nfsd4_dec_ops[] = {
+ [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
+ [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
+ [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
+ [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create,
+ [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn,
+ [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr,
+ [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_LINK] = (nfsd4_dec)nfsd4_decode_link,
+ [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock,
+ [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt,
+ [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku,
+ [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup,
+ [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify,
+ [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open,
+ [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm,
+ [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
+ [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
+ [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
+ [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
+ [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove,
+ [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename,
+ [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew,
+ [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo,
+ [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr,
+ [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid,
+ [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm,
+ [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify,
+ [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write,
+ [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner,
+};
+
+static nfsd4_dec nfsd41_dec_ops[] = {
+ [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access,
+ [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close,
+ [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit,
+ [OP_CREATE] (nfsd4_dec)nfsd4_decode_create,
+ [OP_DELEGPURGE] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn,
+ [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr,
+ [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_LINK] (nfsd4_dec)nfsd4_decode_link,
+ [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock,
+ [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt,
+ [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku,
+ [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup,
+ [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify,
+ [OP_OPEN] (nfsd4_dec)nfsd4_decode_open,
+ [OP_OPENATTR] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade,
+ [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh,
+ [OP_PUTPUBFH] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_READ] (nfsd4_dec)nfsd4_decode_read,
+ [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir,
+ [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove,
+ [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename,
+ [OP_RENEW] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop,
+ [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo,
+ [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr,
+ [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify,
+ [OP_WRITE] (nfsd4_dec)nfsd4_decode_write,
+ [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_notsupp,
+
+ /* new operations for NFSv4.1 */
+ [OP_BACKCHANNEL_CTL] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_BIND_CONN_TO_SESSION](nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_EXCHANGE_ID] (nfsd4_dec)nfsd4_decode_exchange_id,
+ [OP_CREATE_SESSION] (nfsd4_dec)nfsd4_decode_create_session,
+ [OP_DESTROY_SESSION] (nfsd4_dec)nfsd4_decode_destroy_session,
+ [OP_FREE_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GET_DIR_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICEINFO] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_GETDEVICELIST] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTCOMMIT] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTGET] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_LAYOUTRETURN] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SECINFO_NO_NAME] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_SEQUENCE] (nfsd4_dec)nfsd4_decode_sequence,
+ [OP_SET_SSV] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_TEST_STATEID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_WANT_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_DESTROY_CLIENTID] (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_RECLAIM_COMPLETE] (nfsd4_dec)nfsd4_decode_notsupp,
+};
+
+struct nfsd4_minorversion_ops {
+ nfsd4_dec *decoders;
+ int nops;
+};
+
+static struct nfsd4_minorversion_ops nfsd4_minorversion[] = {
+ [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) },
+ [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) },
+};
+
+static __be32
nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
{
DECODE_HEAD;
struct nfsd4_op *op;
+ struct nfsd4_minorversion_ops *ops;
int i;
/*
}
}
+ if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion))
+ argp->opcnt = 0;
+
+ ops = &nfsd4_minorversion[argp->minorversion];
for (i = 0; i < argp->opcnt; i++) {
op = &argp->ops[i];
op->replay = NULL;
}
op->opnum = ntohl(*argp->p++);
- switch (op->opnum) {
- case 2: /* Reserved operation */
- op->opnum = OP_ILLEGAL;
- if (argp->minorversion == 0)
- op->status = nfserr_op_illegal;
- else
- op->status = nfserr_minor_vers_mismatch;
- break;
- case OP_ACCESS:
- op->status = nfsd4_decode_access(argp, &op->u.access);
- break;
- case OP_CLOSE:
- op->status = nfsd4_decode_close(argp, &op->u.close);
- break;
- case OP_COMMIT:
- op->status = nfsd4_decode_commit(argp, &op->u.commit);
- break;
- case OP_CREATE:
- op->status = nfsd4_decode_create(argp, &op->u.create);
- break;
- case OP_DELEGRETURN:
- op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn);
- break;
- case OP_GETATTR:
- op->status = nfsd4_decode_getattr(argp, &op->u.getattr);
- break;
- case OP_GETFH:
- op->status = nfs_ok;
- break;
- case OP_LINK:
- op->status = nfsd4_decode_link(argp, &op->u.link);
- break;
- case OP_LOCK:
- op->status = nfsd4_decode_lock(argp, &op->u.lock);
- break;
- case OP_LOCKT:
- op->status = nfsd4_decode_lockt(argp, &op->u.lockt);
- break;
- case OP_LOCKU:
- op->status = nfsd4_decode_locku(argp, &op->u.locku);
- break;
- case OP_LOOKUP:
- op->status = nfsd4_decode_lookup(argp, &op->u.lookup);
- break;
- case OP_LOOKUPP:
- op->status = nfs_ok;
- break;
- case OP_NVERIFY:
- op->status = nfsd4_decode_verify(argp, &op->u.nverify);
- break;
- case OP_OPEN:
- op->status = nfsd4_decode_open(argp, &op->u.open);
- break;
- case OP_OPEN_CONFIRM:
- op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm);
- break;
- case OP_OPEN_DOWNGRADE:
- op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade);
- break;
- case OP_PUTFH:
- op->status = nfsd4_decode_putfh(argp, &op->u.putfh);
- break;
- case OP_PUTROOTFH:
- op->status = nfs_ok;
- break;
- case OP_READ:
- op->status = nfsd4_decode_read(argp, &op->u.read);
- break;
- case OP_READDIR:
- op->status = nfsd4_decode_readdir(argp, &op->u.readdir);
- break;
- case OP_READLINK:
- op->status = nfs_ok;
- break;
- case OP_REMOVE:
- op->status = nfsd4_decode_remove(argp, &op->u.remove);
- break;
- case OP_RENAME:
- op->status = nfsd4_decode_rename(argp, &op->u.rename);
- break;
- case OP_RESTOREFH:
- op->status = nfs_ok;
- break;
- case OP_RENEW:
- op->status = nfsd4_decode_renew(argp, &op->u.renew);
- break;
- case OP_SAVEFH:
- op->status = nfs_ok;
- break;
- case OP_SECINFO:
- op->status = nfsd4_decode_secinfo(argp, &op->u.secinfo);
- break;
- case OP_SETATTR:
- op->status = nfsd4_decode_setattr(argp, &op->u.setattr);
- break;
- case OP_SETCLIENTID:
- op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid);
- break;
- case OP_SETCLIENTID_CONFIRM:
- op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm);
- break;
- case OP_VERIFY:
- op->status = nfsd4_decode_verify(argp, &op->u.verify);
- break;
- case OP_WRITE:
- op->status = nfsd4_decode_write(argp, &op->u.write);
- break;
- case OP_RELEASE_LOCKOWNER:
- op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner);
- break;
- default:
+ if (op->opnum >= OP_ACCESS && op->opnum < ops->nops)
+ op->status = ops->decoders[op->opnum](argp, &op->u);
+ else {
op->opnum = OP_ILLEGAL;
op->status = nfserr_op_illegal;
- break;
}
if (op->status) {
* task to translate them into Linux-specific versions which are more
* consistent with the style used in NFSv2/v3...
*/
-#define ENCODE_HEAD __be32 *p
-
#define WRITE32(n) *p++ = htonl(n)
#define WRITE64(n) do { \
*p++ = htonl((u32)((n) >> 32)); \
*p++ = htonl((u32)(n)); \
} while (0)
-#define WRITEMEM(ptr,nbytes) do { \
+#define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \
*(p + XDR_QUADLEN(nbytes) -1) = 0; \
memcpy(p, ptr, nbytes); \
p += XDR_QUADLEN(nbytes); \
-} while (0)
+}} while (0)
#define WRITECINFO(c) do { \
*p++ = htonl(c.atomic); \
*p++ = htonl(c.before_ctime_sec); \
* Header routine to setup seqid operation replay cache
*/
#define ENCODE_SEQID_OP_HEAD \
- __be32 *p; \
__be32 *save; \
\
save = resp->p;
{
u32 bmval0 = bmval[0];
u32 bmval1 = bmval[1];
+ u32 bmval2 = bmval[2];
struct kstat stat;
struct svc_fh tempfh;
struct kstatfs statfs;
int err;
int aclsupport = 0;
struct nfs4_acl *acl = NULL;
+ struct nfsd4_compoundres *resp = rqstp->rq_resp;
+ u32 minorversion = resp->cstate.minorversion;
BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1);
- BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0);
- BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1);
+ BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion));
+ BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion));
+ BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion));
if (exp->ex_fslocs.migrated) {
+ BUG_ON(bmval[2]);
status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err);
if (status)
goto out;
if ((buflen -= 16) < 0)
goto out_resource;
- WRITE32(2);
- WRITE32(bmval0);
- WRITE32(bmval1);
+ if (unlikely(bmval2)) {
+ WRITE32(3);
+ WRITE32(bmval0);
+ WRITE32(bmval1);
+ WRITE32(bmval2);
+ } else if (likely(bmval1)) {
+ WRITE32(2);
+ WRITE32(bmval0);
+ WRITE32(bmval1);
+ } else {
+ WRITE32(1);
+ WRITE32(bmval0);
+ }
attrlenp = p++; /* to be backfilled later */
if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) {
- u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0;
+ u32 word0 = nfsd_suppattrs0(minorversion);
+ u32 word1 = nfsd_suppattrs1(minorversion);
+ u32 word2 = nfsd_suppattrs2(minorversion);
+
if ((buflen -= 12) < 0)
goto out_resource;
if (!aclsupport)
word0 &= ~FATTR4_WORD0_ACL;
if (!exp->ex_fslocs.locations)
word0 &= ~FATTR4_WORD0_FS_LOCATIONS;
- WRITE32(2);
- WRITE32(word0);
- WRITE32(NFSD_SUPPORTED_ATTRS_WORD1);
+ if (!word2) {
+ WRITE32(2);
+ WRITE32(word0);
+ WRITE32(word1);
+ } else {
+ WRITE32(3);
+ WRITE32(word0);
+ WRITE32(word1);
+ WRITE32(word2);
+ }
}
if (bmval0 & FATTR4_WORD0_TYPE) {
if ((buflen -= 4) < 0)
}
WRITE64(stat.ino);
}
+ if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
+ WRITE32(3);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);
+ WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2);
+ }
+
*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
*countp = p - buffer;
status = nfs_ok;
goto out;
}
+static inline int attributes_need_mount(u32 *bmval)
+{
+ if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME))
+ return 1;
+ if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID)
+ return 1;
+ return 0;
+}
+
static __be32
nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd,
const char *name, int namlen, __be32 *p, int *buflen)
* we will not follow the cross mount and will fill the attribtutes
* directly from the mountpoint dentry.
*/
- if (d_mountpoint(dentry) &&
- (cd->rd_bmval[0] & ~FATTR4_WORD0_RDATTR_ERROR) == 0 &&
- (cd->rd_bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) == 0)
+ if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval))
ignore_crossmnt = 1;
else if (d_mountpoint(dentry)) {
int err;
}
static void
+nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
+{
+ __be32 *p;
+
+ RESERVE_SPACE(sizeof(stateid_t));
+ WRITE32(sid->si_generation);
+ WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+ ADJUST_ARGS();
+}
+
+static __be32
nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8);
WRITE32(access->ac_resp_access);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close)
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(close->cl_stateid.si_generation);
- WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &close->cl_stateid);
+
ENCODE_SEQID_OP_TAIL(close->cl_stateowner);
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8);
WRITEMEM(commit->co_verf.data, 8);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(32);
WRITE32(create->cr_bmval[1]);
ADJUST_ARGS();
}
+ return nfserr;
}
static __be32
return nfserr;
}
-static void
-nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh *fhp)
+static __be32
+nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp)
{
+ struct svc_fh *fhp = *fhpp;
unsigned int len;
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
len = fhp->fh_handle.fh_size;
WRITEMEM(&fhp->fh_handle.fh_base, len);
ADJUST_ARGS();
}
+ return nfserr;
}
/*
static void
nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
{
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
WRITE64(ld->ld_start);
ADJUST_ARGS();
}
-static void
+static __be32
nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock)
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(4 + sizeof(stateid_t));
- WRITE32(lock->lk_resp_stateid.si_generation);
- WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- } else if (nfserr == nfserr_denied)
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &lock->lk_resp_stateid);
+ else if (nfserr == nfserr_denied)
nfsd4_encode_lock_denied(resp, &lock->lk_denied);
ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner);
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt)
{
if (nfserr == nfserr_denied)
nfsd4_encode_lock_denied(resp, &lockt->lt_denied);
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku)
{
ENCODE_SEQID_OP_HEAD;
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(locku->lu_stateid.si_generation);
- WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
-
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &locku->lu_stateid);
+
ENCODE_SEQID_OP_TAIL(locku->lu_stateowner);
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(20);
WRITECINFO(link->li_cinfo);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
{
+ __be32 *p;
ENCODE_SEQID_OP_HEAD;
if (nfserr)
goto out;
- RESERVE_SPACE(36 + sizeof(stateid_t));
- WRITE32(open->op_stateid.si_generation);
- WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t));
+ nfsd4_encode_stateid(resp, &open->op_stateid);
+ RESERVE_SPACE(40);
WRITECINFO(open->op_cinfo);
WRITE32(open->op_rflags);
WRITE32(2);
case NFS4_OPEN_DELEGATE_NONE:
break;
case NFS4_OPEN_DELEGATE_READ:
- RESERVE_SPACE(20 + sizeof(stateid_t));
- WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
+ RESERVE_SPACE(20);
WRITE32(open->op_recall);
/*
ADJUST_ARGS();
break;
case NFS4_OPEN_DELEGATE_WRITE:
- RESERVE_SPACE(32 + sizeof(stateid_t));
- WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t));
+ nfsd4_encode_stateid(resp, &open->op_delegate_stateid);
+ RESERVE_SPACE(32);
WRITE32(0);
/*
/* XXX save filehandle here */
out:
ENCODE_SEQID_OP_TAIL(open->op_stateowner);
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc)
{
ENCODE_SEQID_OP_HEAD;
-
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(oc->oc_resp_stateid.si_generation);
- WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &oc->oc_resp_stateid);
ENCODE_SEQID_OP_TAIL(oc->oc_stateowner);
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od)
{
ENCODE_SEQID_OP_HEAD;
-
- if (!nfserr) {
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(od->od_stateid.si_generation);
- WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t));
- ADJUST_ARGS();
- }
+
+ if (!nfserr)
+ nfsd4_encode_stateid(resp, &od->od_stateid);
ENCODE_SEQID_OP_TAIL(od->od_stateowner);
+ return nfserr;
}
static __be32
int v, pn;
unsigned long maxcount;
long len;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
{
int maxcount;
char *page;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
int maxcount;
loff_t offset;
__be32 *page, *savep, *tailbase;
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
return nfserr;
return nfserr;
}
-static void
+static __be32
nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(20);
WRITECINFO(remove->rm_cinfo);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(40);
WRITECINFO(rename->rn_tinfo);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_secinfo *secinfo)
{
u32 nflavs;
struct exp_flavor_info *flavs;
struct exp_flavor_info def_flavs[2];
- ENCODE_HEAD;
+ __be32 *p;
if (nfserr)
goto out;
out:
if (exp)
exp_put(exp);
+ return nfserr;
}
/*
* The SETATTR encode routine is special -- it always encodes a bitmap,
* regardless of the error status.
*/
-static void
+static __be32
nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
{
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(12);
if (nfserr) {
WRITE32(setattr->sa_bmval[1]);
}
ADJUST_ARGS();
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(8 + sizeof(nfs4_verifier));
WRITE32(0);
ADJUST_ARGS();
}
+ return nfserr;
}
-static void
+static __be32
nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
{
- ENCODE_HEAD;
+ __be32 *p;
if (!nfserr) {
RESERVE_SPACE(16);
WRITEMEM(write->wr_verifier.data, 8);
ADJUST_ARGS();
}
+ return nfserr;
+}
+
+static __be32
+nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_exchange_id *exid)
+{
+ __be32 *p;
+ char *major_id;
+ char *server_scope;
+ int major_id_sz;
+ int server_scope_sz;
+ uint64_t minor_id = 0;
+
+ if (nfserr)
+ return nfserr;
+
+ major_id = utsname()->nodename;
+ major_id_sz = strlen(major_id);
+ server_scope = utsname()->nodename;
+ server_scope_sz = strlen(server_scope);
+
+ RESERVE_SPACE(
+ 8 /* eir_clientid */ +
+ 4 /* eir_sequenceid */ +
+ 4 /* eir_flags */ +
+ 4 /* spr_how (SP4_NONE) */ +
+ 8 /* so_minor_id */ +
+ 4 /* so_major_id.len */ +
+ (XDR_QUADLEN(major_id_sz) * 4) +
+ 4 /* eir_server_scope.len */ +
+ (XDR_QUADLEN(server_scope_sz) * 4) +
+ 4 /* eir_server_impl_id.count (0) */);
+
+ WRITEMEM(&exid->clientid, 8);
+ WRITE32(exid->seqid);
+ WRITE32(exid->flags);
+
+ /* state_protect4_r. Currently only support SP4_NONE */
+ BUG_ON(exid->spa_how != SP4_NONE);
+ WRITE32(exid->spa_how);
+
+ /* The server_owner struct */
+ WRITE64(minor_id); /* Minor id */
+ /* major id */
+ WRITE32(major_id_sz);
+ WRITEMEM(major_id, major_id_sz);
+
+ /* Server scope */
+ WRITE32(server_scope_sz);
+ WRITEMEM(server_scope, server_scope_sz);
+
+ /* Implementation id */
+ WRITE32(0); /* zero length nfs_impl_id4 array */
+ ADJUST_ARGS();
+ return 0;
+}
+
+static __be32
+nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_create_session *sess)
+{
+ __be32 *p;
+
+ if (nfserr)
+ return nfserr;
+
+ RESERVE_SPACE(24);
+ WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ WRITE32(sess->seqid);
+ WRITE32(sess->flags);
+ ADJUST_ARGS();
+
+ RESERVE_SPACE(28);
+ WRITE32(0); /* headerpadsz */
+ WRITE32(sess->fore_channel.maxreq_sz);
+ WRITE32(sess->fore_channel.maxresp_sz);
+ WRITE32(sess->fore_channel.maxresp_cached);
+ WRITE32(sess->fore_channel.maxops);
+ WRITE32(sess->fore_channel.maxreqs);
+ WRITE32(sess->fore_channel.nr_rdma_attrs);
+ ADJUST_ARGS();
+
+ if (sess->fore_channel.nr_rdma_attrs) {
+ RESERVE_SPACE(4);
+ WRITE32(sess->fore_channel.rdma_attrs);
+ ADJUST_ARGS();
+ }
+
+ RESERVE_SPACE(28);
+ WRITE32(0); /* headerpadsz */
+ WRITE32(sess->back_channel.maxreq_sz);
+ WRITE32(sess->back_channel.maxresp_sz);
+ WRITE32(sess->back_channel.maxresp_cached);
+ WRITE32(sess->back_channel.maxops);
+ WRITE32(sess->back_channel.maxreqs);
+ WRITE32(sess->back_channel.nr_rdma_attrs);
+ ADJUST_ARGS();
+
+ if (sess->back_channel.nr_rdma_attrs) {
+ RESERVE_SPACE(4);
+ WRITE32(sess->back_channel.rdma_attrs);
+ ADJUST_ARGS();
+ }
+ return 0;
+}
+
+static __be32
+nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_destroy_session *destroy_session)
+{
+ return nfserr;
+}
+
+__be32
+nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
+ struct nfsd4_sequence *seq)
+{
+ __be32 *p;
+
+ if (nfserr)
+ return nfserr;
+
+ RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20);
+ WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ WRITE32(seq->seqid);
+ WRITE32(seq->slotid);
+ WRITE32(seq->maxslots);
+ /*
+ * FIXME: for now:
+ * target_maxslots = maxslots
+ * status_flags = 0
+ */
+ WRITE32(seq->maxslots);
+ WRITE32(0);
+
+ ADJUST_ARGS();
+ return 0;
+}
+
+static __be32
+nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
+{
+ return nfserr;
+}
+
+typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
+
+/*
+ * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1
+ * since we don't need to filter out obsolete ops as this is
+ * done in the decoding phase.
+ */
+static nfsd4_enc nfsd4_enc_ops[] = {
+ [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
+ [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
+ [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit,
+ [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create,
+ [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr,
+ [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh,
+ [OP_LINK] = (nfsd4_enc)nfsd4_encode_link,
+ [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock,
+ [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt,
+ [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku,
+ [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open,
+ [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm,
+ [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade,
+ [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_READ] = (nfsd4_enc)nfsd4_encode_read,
+ [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir,
+ [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink,
+ [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove,
+ [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename,
+ [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo,
+ [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr,
+ [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid,
+ [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write,
+ [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop,
+
+ /* NFSv4.1 operations */
+ [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id,
+ [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session,
+ [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session,
+ [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence,
+ [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop,
+};
+
+/*
+ * Calculate the total amount of memory that the compound response has taken
+ * after encoding the current operation.
+ *
+ * pad: add on 8 bytes for the next operation's op_code and status so that
+ * there is room to cache a failure on the next operation.
+ *
+ * Compare this length to the session se_fmaxresp_cached.
+ *
+ * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
+ * will be at least a page and will therefore hold the xdr_buf head.
+ */
+static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
+{
+ int status = 0;
+ struct xdr_buf *xb = &resp->rqstp->rq_res;
+ struct nfsd4_compoundargs *args = resp->rqstp->rq_argp;
+ struct nfsd4_session *session = NULL;
+ struct nfsd4_slot *slot = resp->cstate.slot;
+ u32 length, tlen = 0, pad = 8;
+
+ if (!nfsd4_has_session(&resp->cstate))
+ return status;
+
+ session = resp->cstate.session;
+ if (session == NULL || slot->sl_cache_entry.ce_cachethis == 0)
+ return status;
+
+ if (resp->opcnt >= args->opcnt)
+ pad = 0; /* this is the last operation */
+
+ if (xb->page_len == 0) {
+ length = (char *)resp->p - (char *)xb->head[0].iov_base + pad;
+ } else {
+ if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0)
+ tlen = (char *)resp->p - (char *)xb->tail[0].iov_base;
+
+ length = xb->head[0].iov_len + xb->page_len + tlen + pad;
+ }
+ dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
+ length, xb->page_len, tlen, pad);
+
+ if (length <= session->se_fmaxresp_cached)
+ return status;
+ else
+ return nfserr_rep_too_big_to_cache;
}
void
nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
__be32 *statp;
- ENCODE_HEAD;
+ __be32 *p;
RESERVE_SPACE(8);
WRITE32(op->opnum);
statp = p++; /* to be backfilled at the end */
ADJUST_ARGS();
- switch (op->opnum) {
- case OP_ACCESS:
- nfsd4_encode_access(resp, op->status, &op->u.access);
- break;
- case OP_CLOSE:
- nfsd4_encode_close(resp, op->status, &op->u.close);
- break;
- case OP_COMMIT:
- nfsd4_encode_commit(resp, op->status, &op->u.commit);
- break;
- case OP_CREATE:
- nfsd4_encode_create(resp, op->status, &op->u.create);
- break;
- case OP_DELEGRETURN:
- break;
- case OP_GETATTR:
- op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr);
- break;
- case OP_GETFH:
- nfsd4_encode_getfh(resp, op->status, op->u.getfh);
- break;
- case OP_LINK:
- nfsd4_encode_link(resp, op->status, &op->u.link);
- break;
- case OP_LOCK:
- nfsd4_encode_lock(resp, op->status, &op->u.lock);
- break;
- case OP_LOCKT:
- nfsd4_encode_lockt(resp, op->status, &op->u.lockt);
- break;
- case OP_LOCKU:
- nfsd4_encode_locku(resp, op->status, &op->u.locku);
- break;
- case OP_LOOKUP:
- break;
- case OP_LOOKUPP:
- break;
- case OP_NVERIFY:
- break;
- case OP_OPEN:
- nfsd4_encode_open(resp, op->status, &op->u.open);
- break;
- case OP_OPEN_CONFIRM:
- nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm);
- break;
- case OP_OPEN_DOWNGRADE:
- nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade);
- break;
- case OP_PUTFH:
- break;
- case OP_PUTROOTFH:
- break;
- case OP_READ:
- op->status = nfsd4_encode_read(resp, op->status, &op->u.read);
- break;
- case OP_READDIR:
- op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir);
- break;
- case OP_READLINK:
- op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink);
- break;
- case OP_REMOVE:
- nfsd4_encode_remove(resp, op->status, &op->u.remove);
- break;
- case OP_RENAME:
- nfsd4_encode_rename(resp, op->status, &op->u.rename);
- break;
- case OP_RENEW:
- break;
- case OP_RESTOREFH:
- break;
- case OP_SAVEFH:
- break;
- case OP_SECINFO:
- nfsd4_encode_secinfo(resp, op->status, &op->u.secinfo);
- break;
- case OP_SETATTR:
- nfsd4_encode_setattr(resp, op->status, &op->u.setattr);
- break;
- case OP_SETCLIENTID:
- nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid);
- break;
- case OP_SETCLIENTID_CONFIRM:
- break;
- case OP_VERIFY:
- break;
- case OP_WRITE:
- nfsd4_encode_write(resp, op->status, &op->u.write);
- break;
- case OP_RELEASE_LOCKOWNER:
- break;
- default:
- break;
- }
-
+ if (op->opnum == OP_ILLEGAL)
+ goto status;
+ BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) ||
+ !nfsd4_enc_ops[op->opnum]);
+ op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u);
+ /* nfsd4_check_drc_limit guarantees enough room for error status */
+ if (!op->status && nfsd4_check_drc_limit(resp))
+ op->status = nfserr_rep_too_big_to_cache;
+status:
/*
* Note: We write the status directly, instead of using WRITE32(),
* since it is already in network byte order.
void
nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
- ENCODE_HEAD;
+ __be32 *p;
struct nfs4_replay *rp = op->replay;
BUG_ON(!rp);
iov = &rqstp->rq_res.head[0];
iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
BUG_ON(iov->iov_len > PAGE_SIZE);
+ if (nfsd4_has_session(&resp->cstate)) {
+ if (resp->cstate.status == nfserr_replay_cache &&
+ !nfsd4_not_cached(resp)) {
+ iov->iov_len = resp->cstate.iovlen;
+ } else {
+ nfsd4_store_cache_entry(resp);
+ dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
+ resp->cstate.slot->sl_inuse = 0;
+ }
+ if (resp->cstate.session)
+ nfsd4_put_session(resp->cstate.session);
+ }
return 1;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff