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Commit 76b32999 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4: Make NFSv4 ACCESS calls return attributes too... 



It doesn't really make sense to cache an access call without also
revalidating the attributes.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent af22f94a

fs/nfs/nfs4proc.c

+9 −2
Original line number Diff line number Diff line
@@ -62,7 +62,6 @@ struct nfs4_opendata; 
static int _nfs4_proc_open(struct nfs4_opendata *data);

static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);

static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *);

static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry);

static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception);

static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp);

static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
@@ -1726,10 +1725,16 @@ static int nfs4_proc_lookup(struct inode *dir, struct qstr *name, struct nfs_fh 


static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)

{

	struct nfs_server *server = NFS_SERVER(inode);

	struct nfs_fattr fattr;

	struct nfs4_accessargs args = {

		.fh = NFS_FH(inode),

		.bitmask = server->attr_bitmask,

	};

	struct nfs4_accessres res = {

		.server = server,

		.fattr = &fattr,

	};

	struct nfs4_accessres res = { 0 };

	struct rpc_message msg = {

		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],

		.rpc_argp = &args,
@@ -1755,6 +1760,7 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry 
		if (mode & MAY_EXEC)

			args.access |= NFS4_ACCESS_EXECUTE;

	}

	nfs_fattr_init(&fattr);

	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);

	if (!status) {

		entry->mask = 0;
@@ -1764,6 +1770,7 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry 
			entry->mask |= MAY_WRITE;

		if (res.access & (NFS4_ACCESS_LOOKUP|NFS4_ACCESS_EXECUTE))

			entry->mask |= MAY_EXEC;

		nfs_refresh_inode(inode, &fattr);

	}

	return status;

}

fs/nfs/nfs4xdr.c

+20 −7
Original line number Diff line number Diff line
@@ -376,10 +376,12 @@ static int nfs4_stat_to_errno(int); 
				decode_locku_maxsz)

#define NFS4_enc_access_sz	(compound_encode_hdr_maxsz + \

				encode_putfh_maxsz + \

				encode_access_maxsz)

				encode_access_maxsz + \

				encode_getattr_maxsz)

#define NFS4_dec_access_sz	(compound_decode_hdr_maxsz + \

				decode_putfh_maxsz + \

				decode_access_maxsz)

				decode_access_maxsz + \

				decode_getattr_maxsz)

#define NFS4_enc_getattr_sz	(compound_encode_hdr_maxsz + \

				encode_putfh_maxsz + \

				encode_getattr_maxsz)
@@ -1375,14 +1377,20 @@ static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs 
{

	struct xdr_stream xdr;

	struct compound_hdr hdr = {

		.nops = 2,

		.nops = 3,

	};

	int status;



	xdr_init_encode(&xdr, &req->rq_snd_buf, p);

	encode_compound_hdr(&xdr, &hdr);

	if ((status = encode_putfh(&xdr, args->fh)) == 0)

	status = encode_putfh(&xdr, args->fh);

	if (status != 0)

		goto out;

	status = encode_access(&xdr, args->access);

	if (status != 0)

		goto out;

	status = encode_getfattr(&xdr, args->bitmask);

out:

	return status;

}
@@ -3784,8 +3792,13 @@ static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_ac 
	xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);

	if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)

		goto out;

	if ((status = decode_putfh(&xdr)) == 0)

	status = decode_putfh(&xdr);

	if (status != 0)

		goto out;

	status = decode_access(&xdr, res);

	if (status != 0)

		goto out;

	decode_getfattr(&xdr, res->fattr, res->server);

out:

	return status;

}

include/linux/nfs_xdr.h

+3 −0
Original line number Diff line number Diff line
@@ -538,10 +538,13 @@ typedef u64 clientid4; 


struct nfs4_accessargs {

	const struct nfs_fh *		fh;

	const u32 *			bitmask;

	u32				access;

};



struct nfs4_accessres {

	const struct nfs_server *	server;

	struct nfs_fattr *		fattr;

	u32				supported;

	u32				access;

};