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Re: [PATCH v3 25/25] tools/xenstore: introduce get_node_const()


  • To: Julien Grall <julien@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Juergen Gross <jgross@xxxxxxxx>
  • Date: Mon, 14 Aug 2023 07:54:17 +0200
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  • Cc: Wei Liu <wl@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>
  • Delivery-date: Mon, 14 Aug 2023 05:54:28 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 12.08.23 14:05, Julien Grall wrote:
Hi,

On 24/07/2023 12:02, Juergen Gross wrote:
Add a variant of get_node() returning a const struct node pointer.

Note that all callers of this new variant don't supply a pointer where
to store the canonical node name, while all callers needing a non-const
node do supply this pointer. This results in an asymmetric
simplification of the two variants.

And I am guessing there are no near term plan to use get_node() with canonical_name = NULL or the caller of get_node_const() expecting the name?

Correct.

The canonical name is needed by the caller only in case he wants to store
the node afterwards. And this will be done only after a modification of
the node, implying that using the "const" variant would be wrong.


Juergen

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