nfs: we don't support removing system.nfs4_acl
The NFSv4 protocol doesn't have any notion of reomoving an attribute, so removexattr(path,"system.nfs4_acl") doesn't make sense. There's no documented return value. Arguably it could be EOPNOTSUPP but I'm a little worried an application might take that to mean that we don't support ACLs or xattrs. How about EINVAL? Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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@ -5889,6 +5889,9 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
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unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
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int ret, i;
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/* You can't remove system.nfs4_acl: */
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if (buflen == 0)
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return -EINVAL;
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if (!nfs4_server_supports_acls(server))
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return -EOPNOTSUPP;
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if (npages > ARRAY_SIZE(pages))
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