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NFSD: Implement the COPY call

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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>
This commit is contained in:
Anna Schumaker
2016-09-07 15:57:30 -04:00
committed by J. Bruce Fields
parent 42e616167a
commit 29ae7f9dc2
5 changed files with 181 additions and 13 deletions
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63
fs/nfsd/nfs4xdr.c
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@@ -1693,6 +1693,30 @@ nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone)
DECODE_TAIL;
}
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)
{
@@ -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,
@@ -4201,6 +4225,41 @@ 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,