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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: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2007-08-10 17:45:11 -04:00
parent af22f94ae0
commit 76b32999df
3 changed files with 32 additions and 9 deletions
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11
fs/nfs/nfs4proc.c
View File

@ -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;
}

27
fs/nfs/nfs4xdr.c
View File

@ -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_access(&xdr, args->access);
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_access(&xdr, res);
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;
}

3
include/linux/nfs_xdr.h
View File

@ -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;
};