NFSv4: Dont list system.nfs4_acl for filesystems that don't support it.
Thanks to Frank Filz for pointing out that we list system.nfs4_acl extended attribute even on filesystems where we don't actually support nfs4_acl. This is inconsistent with the e.g. ext3 POSIX ACL behaviour, and seems to annoy cp. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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@ -3559,6 +3559,8 @@ ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
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{
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size_t len = strlen(XATTR_NAME_NFSV4_ACL) + 1;
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if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
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return 0;
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if (buf && buflen < len)
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return -ERANGE;
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if (buf)
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