/*
- * fs/nfs/nfs4xdr.c
- *
* Server-side XDR for NFSv4
*
* Copyright (c) 2002 The Regents of the University of Michigan.
} \
} while (0)
-static __be32 *read_buf(struct nfsd4_compoundargs *argp, int nbytes)
+static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
{
/* We want more bytes than seem to be available.
* Maybe we need a new page, maybe we have just run out
*/
- int avail = (char*)argp->end - (char*)argp->p;
+ unsigned int avail = (char *)argp->end - (char *)argp->p;
__be32 *p;
if (avail + argp->pagelen < nbytes)
return NULL;
return NULL;
}
+ /*
+ * The following memcpy is safe because read_buf is always
+ * called with nbytes > avail, and the two cases above both
+ * guarantee p points to at least nbytes bytes.
+ */
memcpy(p, argp->p, avail);
/* step to next page */
argp->p = page_address(argp->pagelist[0]);
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;
}
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;
}
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);
}
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);
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,
+ &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)
}
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_opnotsupp;
+}
+
+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_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_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,
+};
+
+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) },
+};
+
+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) {
*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;
*stat = exp_pseudoroot(rqstp, &tmp_fh);
if (*stat)
return NULL;
- rootpath = tmp_fh.fh_export->ex_path;
+ rootpath = tmp_fh.fh_export->ex_pathname;
- path = exp->ex_path;
+ path = exp->ex_pathname;
if (strncmp(path, rootpath, strlen(rootpath))) {
dprintk("nfsd: fs_locations failed;"
__be32
nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval,
- struct svc_rqst *rqstp)
+ struct svc_rqst *rqstp, int ignore_crossmnt)
{
u32 bmval0 = bmval[0];
u32 bmval1 = bmval[1];
goto out;
}
- err = vfs_getattr(exp->ex_mnt, dentry, &stat);
+ err = vfs_getattr(exp->ex_path.mnt, dentry, &stat);
if (err)
goto out_nfserr;
- if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) ||
+ if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL |
+ FATTR4_WORD0_MAXNAME)) ||
(bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE |
FATTR4_WORD1_SPACE_TOTAL))) {
err = vfs_statfs(dentry, &statfs);
if (bmval0 & FATTR4_WORD0_FILEID) {
if ((buflen -= 8) < 0)
goto out_resource;
- WRITE64((u64) stat.ino);
+ WRITE64(stat.ino);
}
if (bmval0 & FATTR4_WORD0_FILES_AVAIL) {
if ((buflen -= 8) < 0)
if (bmval0 & FATTR4_WORD0_MAXNAME) {
if ((buflen -= 4) < 0)
goto out_resource;
- WRITE32(~(u32) 0);
+ WRITE32(statfs.f_namelen);
}
if (bmval0 & FATTR4_WORD0_MAXREAD) {
if ((buflen -= 8) < 0)
WRITE32(stat.mtime.tv_nsec);
}
if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) {
- struct dentry *mnt_pnt, *mnt_root;
-
if ((buflen -= 8) < 0)
goto out_resource;
- mnt_root = exp->ex_mnt->mnt_root;
- if (mnt_root->d_inode == dentry->d_inode) {
- mnt_pnt = exp->ex_mnt->mnt_mountpoint;
- WRITE64((u64) mnt_pnt->d_inode->i_ino);
- } else
- WRITE64((u64) stat.ino);
+ /*
+ * Get parent's attributes if not ignoring crossmount
+ * and this is the root of a cross-mounted filesystem.
+ */
+ if (ignore_crossmnt == 0 &&
+ exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
+ err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
+ exp->ex_path.mnt->mnt_mountpoint, &stat);
+ if (err)
+ goto out_nfserr;
+ }
+ WRITE64(stat.ino);
}
*attrlenp = htonl((char *)p - (char *)attrlenp - 4);
*countp = p - buffer;
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)
struct svc_export *exp = cd->rd_fhp->fh_export;
struct dentry *dentry;
__be32 nfserr;
+ int ignore_crossmnt = 0;
dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen);
if (IS_ERR(dentry))
return nfserrno(PTR_ERR(dentry));
exp_get(exp);
- if (d_mountpoint(dentry)) {
+ /*
+ * In the case of a mountpoint, the client may be asking for
+ * attributes that are only properties of the underlying filesystem
+ * as opposed to the cross-mounted file system. In such a case,
+ * we will not follow the cross mount and will fill the attribtutes
+ * directly from the mountpoint dentry.
+ */
+ if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval))
+ ignore_crossmnt = 1;
+ else if (d_mountpoint(dentry)) {
int err;
/*
}
nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval,
- cd->rd_rqstp);
+ cd->rd_rqstp, ignore_crossmnt);
out_put:
dput(dentry);
exp_put(exp);
}
static void
+nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
+{
+ ENCODE_HEAD;
+
+ 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;
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;
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;
WRITE32(create->cr_bmval[1]);
ADJUST_ARGS();
}
+ return nfserr;
}
static __be32
buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2);
nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry,
resp->p, &buflen, getattr->ga_bmval,
- resp->rqstp);
+ resp->rqstp, 0);
if (!nfserr)
resp->p += buflen;
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;
WRITEMEM(&fhp->fh_handle.fh_base, len);
ADJUST_ARGS();
}
+ return nfserr;
}
/*
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;
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)
{
+ ENCODE_HEAD;
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
return nfserr;
}
-static void
+static __be32
nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
{
ENCODE_HEAD;
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;
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)
{
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;
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;
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;
WRITEMEM(write->wr_verifier.data, 8);
ADJUST_ARGS();
}
+ return nfserr;
}
+static __be32
+nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p)
+{
+ return nfserr;
+}
+
+typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *);
+
+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,
+};
+
void
nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
{
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);
+status:
/*
* Note: We write the status directly, instead of using WRITE32(),
* since it is already in network byte order.
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff