evin/ms-nfs41-client
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ea: query each superblock for named attr support

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adds a new function nfs41_superblock_getattr(), which adds an OPENATTR call with createdir=0 after the GETATTR to check for named attribute support.  OPENATTR will either return ERR_NOTSUPP if not supported, or OK/ERR_NOENT depending on whether named attributes are present on the given file.  we can't query for the 'named_attr' attribute, because it only tells us whether the given file contains named attributes

if named attributes are supported on a superblock, it will return FILE_SUPPORTS_EXTENDED_ATTRIBUTES for associated volume queries

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2012-04-05 12:02:07 -04:00 • committed by unknown
parent fd591f92d7
commit b3229d20f6
5 changed files with 82 additions and 3 deletions
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66
daemon/nfs41_ops.c
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@ -1135,6 +1135,72 @@ out:
return status;
}
int nfs41_superblock_getattr(
IN nfs41_session *session,
IN nfs41_path_fh *file,
IN bitmap4 *attr_request,
OUT nfs41_file_info *info,
OUT bool_t *supports_named_attrs)
{
int status;
nfs41_compound compound;
nfs_argop4 argops[4];
nfs_resop4 resops[4];
nfs41_sequence_args sequence_args;
nfs41_sequence_res sequence_res;
nfs41_putfh_args putfh_args;
nfs41_putfh_res putfh_res;
nfs41_getattr_args getattr_args;
nfs41_getattr_res getattr_res;
nfs41_openattr_args openattr_args;
nfs41_openattr_res openattr_res;
compound_init(&compound, argops, resops, "getfsattr");
compound_add_op(&compound, OP_SEQUENCE, &sequence_args, &sequence_res);
status = nfs41_session_sequence(&sequence_args, session, 0);
if (status)
goto out;
compound_add_op(&compound, OP_PUTFH, &putfh_args, &putfh_res);
putfh_args.file = file;
putfh_args.in_recovery = 0;
compound_add_op(&compound, OP_GETATTR, &getattr_args, &getattr_res);
getattr_args.attr_request = attr_request;
getattr_res.obj_attributes.attr_vals_len = NFS4_OPAQUE_LIMIT;
getattr_res.info = info;
compound_add_op(&compound, OP_OPENATTR, &openattr_args, &openattr_res);
openattr_args.createdir = 0;
status = compound_encode_send_decode(session, &compound, TRUE);
if (status)
goto out;
status = sequence_res.sr_status;
if (status) goto out;
status = putfh_res.status;
if (status) goto out;
status = getattr_res.status;
if (status) goto out;
switch (status = openattr_res.status) {
case NFS4ERR_NOTSUPP:
*supports_named_attrs = 0;
status = NFS4_OK;
break;
case NFS4ERR_NOENT:
case NFS4_OK:
*supports_named_attrs = 1;
status = NFS4_OK;
break;
}
out:
return status;
}
int nfs41_remove(
IN nfs41_session *session,
IN nfs41_path_fh *parent,