Commit 23e50fe3 authored by Frank van der Linden's avatar Frank van der Linden Committed by Chuck Lever

nfsd: implement the xattr functions and en/decode logic

Implement the main entry points for the *XATTR operations.

Add functions to calculate the reply size for the user extended attribute
operations, and implement the XDR encode / decode logic for these
operations.

Add the user extended attributes operations to nfsd4_ops.
Signed-off-by: default avatarFrank van der Linden <fllinden@amazon.com>
Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
parent 6178713b
...@@ -2097,6 +2097,68 @@ nfsd4_layoutreturn(struct svc_rqst *rqstp, ...@@ -2097,6 +2097,68 @@ nfsd4_layoutreturn(struct svc_rqst *rqstp,
} }
#endif /* CONFIG_NFSD_PNFS */ #endif /* CONFIG_NFSD_PNFS */
static __be32
nfsd4_getxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
struct nfsd4_getxattr *getxattr = &u->getxattr;
return nfsd_getxattr(rqstp, &cstate->current_fh,
getxattr->getxa_name, &getxattr->getxa_buf,
&getxattr->getxa_len);
}
static __be32
nfsd4_setxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
struct nfsd4_setxattr *setxattr = &u->setxattr;
__be32 ret;
if (opens_in_grace(SVC_NET(rqstp)))
return nfserr_grace;
ret = nfsd_setxattr(rqstp, &cstate->current_fh, setxattr->setxa_name,
setxattr->setxa_buf, setxattr->setxa_len,
setxattr->setxa_flags);
if (!ret)
set_change_info(&setxattr->setxa_cinfo, &cstate->current_fh);
return ret;
}
static __be32
nfsd4_listxattrs(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
/*
* Get the entire list, then copy out only the user attributes
* in the encode function.
*/
return nfsd_listxattr(rqstp, &cstate->current_fh,
&u->listxattrs.lsxa_buf, &u->listxattrs.lsxa_len);
}
static __be32
nfsd4_removexattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
struct nfsd4_removexattr *removexattr = &u->removexattr;
__be32 ret;
if (opens_in_grace(SVC_NET(rqstp)))
return nfserr_grace;
ret = nfsd_removexattr(rqstp, &cstate->current_fh,
removexattr->rmxa_name);
if (!ret)
set_change_info(&removexattr->rmxa_cinfo, &cstate->current_fh);
return ret;
}
/* /*
* NULL call. * NULL call.
*/ */
...@@ -2706,6 +2768,42 @@ static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) ...@@ -2706,6 +2768,42 @@ static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
return (op_encode_hdr_size + 3) * sizeof(__be32); return (op_encode_hdr_size + 3) * sizeof(__be32);
} }
static inline u32 nfsd4_getxattr_rsize(struct svc_rqst *rqstp,
struct nfsd4_op *op)
{
u32 maxcount, rlen;
maxcount = svc_max_payload(rqstp);
rlen = min_t(u32, XATTR_SIZE_MAX, maxcount);
return (op_encode_hdr_size + 1 + XDR_QUADLEN(rlen)) * sizeof(__be32);
}
static inline u32 nfsd4_setxattr_rsize(struct svc_rqst *rqstp,
struct nfsd4_op *op)
{
return (op_encode_hdr_size + op_encode_change_info_maxsz)
* sizeof(__be32);
}
static inline u32 nfsd4_listxattrs_rsize(struct svc_rqst *rqstp,
struct nfsd4_op *op)
{
u32 maxcount, rlen;
maxcount = svc_max_payload(rqstp);
rlen = min(op->u.listxattrs.lsxa_maxcount, maxcount);
return (op_encode_hdr_size + 4 + XDR_QUADLEN(rlen)) * sizeof(__be32);
}
static inline u32 nfsd4_removexattr_rsize(struct svc_rqst *rqstp,
struct nfsd4_op *op)
{
return (op_encode_hdr_size + op_encode_change_info_maxsz)
* sizeof(__be32);
}
static const struct nfsd4_operation nfsd4_ops[] = { static const struct nfsd4_operation nfsd4_ops[] = {
[OP_ACCESS] = { [OP_ACCESS] = {
.op_func = nfsd4_access, .op_func = nfsd4_access,
...@@ -3087,6 +3185,28 @@ static const struct nfsd4_operation nfsd4_ops[] = { ...@@ -3087,6 +3185,28 @@ static const struct nfsd4_operation nfsd4_ops[] = {
.op_name = "OP_COPY_NOTIFY", .op_name = "OP_COPY_NOTIFY",
.op_rsize_bop = nfsd4_copy_notify_rsize, .op_rsize_bop = nfsd4_copy_notify_rsize,
}, },
[OP_GETXATTR] = {
.op_func = nfsd4_getxattr,
.op_name = "OP_GETXATTR",
.op_rsize_bop = nfsd4_getxattr_rsize,
},
[OP_SETXATTR] = {
.op_func = nfsd4_setxattr,
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_SETXATTR",
.op_rsize_bop = nfsd4_setxattr_rsize,
},
[OP_LISTXATTRS] = {
.op_func = nfsd4_listxattrs,
.op_name = "OP_LISTXATTRS",
.op_rsize_bop = nfsd4_listxattrs_rsize,
},
[OP_REMOVEXATTR] = {
.op_func = nfsd4_removexattr,
.op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
.op_name = "OP_REMOVEXATTR",
.op_rsize_bop = nfsd4_removexattr_rsize,
},
}; };
/** /**
......
This diff is collapsed.
...@@ -165,7 +165,7 @@ Needs to be updated if more operations are defined in future.*/ ...@@ -165,7 +165,7 @@ Needs to be updated if more operations are defined in future.*/
#define FIRST_NFS4_OP OP_ACCESS #define FIRST_NFS4_OP OP_ACCESS
#define LAST_NFS40_OP OP_RELEASE_LOCKOWNER #define LAST_NFS40_OP OP_RELEASE_LOCKOWNER
#define LAST_NFS41_OP OP_RECLAIM_COMPLETE #define LAST_NFS41_OP OP_RECLAIM_COMPLETE
#define LAST_NFS42_OP OP_CLONE #define LAST_NFS42_OP OP_REMOVEXATTR
#define LAST_NFS4_OP LAST_NFS42_OP #define LAST_NFS4_OP LAST_NFS42_OP
enum nfsstat4 { enum nfsstat4 {
......
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