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authorAnna Schumaker <Anna.Schumaker@netapp.com>2016-09-07 15:57:30 -0400
committerJ. Bruce Fields <bfields@redhat.com>2016-10-07 14:54:25 -0400
commit29ae7f9dc21a7dda41d78b27bbda7d427ece8ad4 (patch)
treec162c3003ef26c71d4c1d7353b6f75e75b559ab8 /fs/nfsd/nfs4xdr.c
parent42e616167abb7e4074cfba3a2ca19fa2aba40048 (diff)
NFSD: Implement the COPY call
I only implemented the sync version of this call, since it's the easiest. I can simply call vfs_copy_range() and have the vfs do the right thing for the filesystem being exported. Signed-off-by: Anna Schumaker <bjschuma@netapp.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4xdr.c')
-rw-r--r--fs/nfsd/nfs4xdr.c63
1 files changed, 61 insertions, 2 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 7f8232e32dc7..c2d2895a1ec1 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1694,6 +1694,30 @@ nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone)
}
static __be32
+nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy)
+{
+ DECODE_HEAD;
+ unsigned int tmp;
+
+ status = nfsd4_decode_stateid(argp, &copy->cp_src_stateid);
+ if (status)
+ return status;
+ status = nfsd4_decode_stateid(argp, &copy->cp_dst_stateid);
+ if (status)
+ return status;
+
+ READ_BUF(8 + 8 + 8 + 4 + 4 + 4);
+ p = xdr_decode_hyper(p, &copy->cp_src_pos);
+ p = xdr_decode_hyper(p, &copy->cp_dst_pos);
+ p = xdr_decode_hyper(p, &copy->cp_count);
+ copy->cp_consecutive = be32_to_cpup(p++);
+ copy->cp_synchronous = be32_to_cpup(p++);
+ tmp = be32_to_cpup(p); /* Source server list not supported */
+
+ DECODE_TAIL;
+}
+
+static __be32
nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek)
{
DECODE_HEAD;
@@ -1793,7 +1817,7 @@ static nfsd4_dec nfsd4_dec_ops[] = {
/* new operations for NFSv4.2 */
[OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate,
- [OP_COPY] = (nfsd4_dec)nfsd4_decode_notsupp,
+ [OP_COPY] = (nfsd4_dec)nfsd4_decode_copy,
[OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp,
[OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate,
[OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp,
@@ -4202,6 +4226,41 @@ nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr,
#endif /* CONFIG_NFSD_PNFS */
static __be32
+nfsd42_encode_write_res(struct nfsd4_compoundres *resp, struct nfsd42_write_res *write)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(&resp->xdr, 4 + 8 + 4 + NFS4_VERIFIER_SIZE);
+ if (!p)
+ return nfserr_resource;
+
+ *p++ = cpu_to_be32(0);
+ p = xdr_encode_hyper(p, write->wr_bytes_written);
+ *p++ = cpu_to_be32(write->wr_stable_how);
+ p = xdr_encode_opaque_fixed(p, write->wr_verifier.data,
+ NFS4_VERIFIER_SIZE);
+ return nfs_ok;
+}
+
+static __be32
+nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr,
+ struct nfsd4_copy *copy)
+{
+ __be32 *p;
+
+ if (!nfserr) {
+ nfserr = nfsd42_encode_write_res(resp, &copy->cp_res);
+ if (nfserr)
+ return nfserr;
+
+ p = xdr_reserve_space(&resp->xdr, 4 + 4);
+ *p++ = cpu_to_be32(copy->cp_consecutive);
+ *p++ = cpu_to_be32(copy->cp_synchronous);
+ }
+ return nfserr;
+}
+
+static __be32
nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr,
struct nfsd4_seek *seek)
{
@@ -4300,7 +4359,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
/* NFSv4.2 operations */
[OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop,
- [OP_COPY] = (nfsd4_enc)nfsd4_encode_noop,
+ [OP_COPY] = (nfsd4_enc)nfsd4_encode_copy,
[OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop,
[OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop,
[OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop,