Re: [PATCH 09/10] pylibfdt: Support setting the name of a node

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On Wed, May 23, 2018 at 10:03:45PM -0600, Simon Glass wrote:
> Add a method to call fdt_set_name().
> 
> Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>

Node names are C strings, which can't encode everything that Python
strings can (embedded \0 in particular).  So you should verify that
the Python string will be valid in C before passing it through.

> ---
> 
>  pylibfdt/libfdt.i       | 15 +++++++++++++++
>  tests/pylibfdt_tests.py |  7 +++++++
>  2 files changed, 22 insertions(+)
> 
> diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
> index 5ecddba..cf4ed93 100644
> --- a/pylibfdt/libfdt.i
> +++ b/pylibfdt/libfdt.i
> @@ -545,6 +545,21 @@ class Fdt:
>          """
>          return check_err(fdt_parent_offset(self._fdt, nodeoffset), quiet)
>  
> +    def set_name(self, nodeoffset, name, quiet=()):
> +        """Set the name of a node
> +
> +        Args:
> +            nodeoffset: Node offset of node to update
> +            name: New node name
> +
> +        Returns:
> +            Error code, or 0 if OK
> +
> +        Raises:
> +            FdtException if no parent found or other error occurs
> +        """
> +        return check_err(fdt_set_name(self._fdt, nodeoffset, name), quiet)
> +
>      def setprop(self, nodeoffset, prop_name, val, quiet=()):
>          """Set the value of a property
>  
> diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
> index a6d9430..57eedcb 100644
> --- a/tests/pylibfdt_tests.py
> +++ b/tests/pylibfdt_tests.py
> @@ -450,6 +450,13 @@ class PyLibfdtTests(unittest.TestCase):
>          self.assertEquals(TEST_STRING_2,
>                            self.fdt.getprop_obj(node, prop).as_str())
>  
> +    def testSetName(self):
> +        """Test that we can update a node name"""
> +        node = self.fdt.path_offset('/subnode@1')
> +        old_val = self.fdt.get_name(node)
> +        self.fdt.set_name(node, 'test')
> +        self.assertEquals('test', self.fdt.get_name(node))
> +
>  
>  if __name__ == "__main__":
>      unittest.main()

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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