Btrfs: Make ACLs return EOPNOTSUPP for now
There was a slight problem with ACL's returning EINVAL when you tried to set an ACL. This isn't correct, we should be returning EOPNOTSUPP, so I did a very ugly thing and just commented everybody out and made them return EOPNOTSUPP. This is only temporary, I'm going back to implement ACL's, but Chris wants to push out a release so this will suffice for now. Also Yan suggested setting reada to -1 in the delete case to enable backwards readahead, and in the listxattr case I moved path->reada = 2; to after the if (!path) check so we can avoid a possible null dereference. Thank you, Signed-off-by: Chris Mason <chris.mason@oracle.com>
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@ -23,32 +23,50 @@
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#include "ctree.h"
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#include "xattr.h"
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/*
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* FIXME: At this point this is all place holder stuff, we just return
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* -EOPNOTSUPP so cp won't complain when it tries to copy over a file with an
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* acl on it.
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*/
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static int btrfs_xattr_acl_access_get(struct inode *inode, const char *name,
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void *value, size_t size)
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{
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/*
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return btrfs_xattr_get(inode, BTRFS_XATTR_INDEX_POSIX_ACL_ACCESS, name,
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value, size);
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*/
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return -EOPNOTSUPP;
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}
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static int btrfs_xattr_acl_access_set(struct inode *inode, const char *name,
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const void *value, size_t size, int flags)
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{
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/*
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return btrfs_xattr_set(inode, BTRFS_XATTR_INDEX_POSIX_ACL_ACCESS, name,
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value, size, flags);
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*/
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return -EOPNOTSUPP;
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}
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static int btrfs_xattr_acl_default_get(struct inode *inode, const char *name,
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void *value, size_t size)
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{
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/*
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return btrfs_xattr_get(inode, BTRFS_XATTR_INDEX_POSIX_ACL_DEFAULT,
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name, value, size);
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*/
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return -EOPNOTSUPP;
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}
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static int btrfs_xattr_acl_default_set(struct inode *inode, const char *name,
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const void *value, size_t size, int flags)
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{
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/*
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return btrfs_xattr_set(inode, BTRFS_XATTR_INDEX_POSIX_ACL_DEFAULT,
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name, value, size, flags);
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*/
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return -EOPNOTSUPP;
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}
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struct xattr_handler btrfs_xattr_acl_default_handler = {
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@ -302,9 +302,9 @@ ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
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key.offset = 0;
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path = btrfs_alloc_path();
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path->reada = 2;
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if (!path)
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return -ENOMEM;
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path->reada = 2;
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mutex_lock(&root->fs_info->fs_mutex);
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@ -410,7 +410,7 @@ int btrfs_delete_xattrs(struct btrfs_trans_handle *trans,
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path = btrfs_alloc_path();
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if (!path)
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return -ENOMEM;
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path->reada = -1;
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key.objectid = inode->i_ino;
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btrfs_set_key_type(&key, BTRFS_XATTR_ITEM_KEY);
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key.offset = (u64)-1;
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