* [PATCH v4] pylibfdt: add FdtRo.get_path()
@ 2022-04-19 19:45 Luca Weiss
[not found] ` <20220419194537.63170-1-luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
0 siblings, 1 reply; 7+ messages in thread
From: Luca Weiss @ 2022-04-19 19:45 UTC (permalink / raw)
To: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA; +Cc: Luca Weiss
Add a new Python method wrapping fdt_get_path() from the C API.
Also add a test for the new method.
Signed-off-by: Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
---
Changes since v3:
* add quiet parameter
* return integer error when error is quieted
Changes since v2:
* Remove arbitrary size limit
* Change size calculation to increase exponentially
* Add test to verify we still get exceptions with bad parameters
pylibfdt/libfdt.i | 28 ++++++++++++++++++++++++++++
tests/pylibfdt_tests.py | 13 +++++++++++++
2 files changed, 41 insertions(+)
diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
index ac70762..f9f7e7e 100644
--- a/pylibfdt/libfdt.i
+++ b/pylibfdt/libfdt.i
@@ -443,6 +443,29 @@ class FdtRo(object):
"""
return fdt_get_alias(self._fdt, name)
+ def get_path(self, nodeoffset, quiet=()):
+ """Get the full path of a node
+
+ Args:
+ nodeoffset: Node offset to check
+
+ Returns:
+ Full path to the node
+
+ Raises:
+ FdtException if an error occurs
+ """
+ size = 1024
+ while True:
+ ret, path = fdt_get_path(self._fdt, nodeoffset, size)
+ if ret == -NOSPACE:
+ size = size * 2
+ continue
+ err = check_err(ret, quiet)
+ if err:
+ return err
+ return path
+
def parent_offset(self, nodeoffset, quiet=()):
"""Get the offset of a node's parent
@@ -1115,6 +1138,11 @@ typedef uint32_t fdt32_t;
}
}
+%include "cstring.i"
+
+%cstring_output_maxsize(char *buf, int buflen);
+int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
+
/* We have both struct fdt_property and a function fdt_property() */
%warnfilter(302) fdt_property;
diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
index 5479363..68d6aaa 100644
--- a/tests/pylibfdt_tests.py
+++ b/tests/pylibfdt_tests.py
@@ -348,6 +348,19 @@ class PyLibfdtBasicTests(unittest.TestCase):
self.assertEqual("/subnode@1/subsubnode", self.fdt3.get_alias('ss1'))
self.assertEqual("/subnode@1/subsubnode/subsubsubnode", self.fdt3.get_alias('sss1'))
+ def testGetPath(self):
+ """Test for the get_path() method"""
+ node = self.fdt.path_offset('/subnode@1')
+ node2 = self.fdt.path_offset('/subnode@1/subsubnode')
+ self.assertEqual("/subnode@1", self.fdt.get_path(node))
+ self.assertEqual("/subnode@1/subsubnode", self.fdt.get_path(node2))
+
+ with self.assertRaises(FdtException) as e:
+ self.fdt.get_path(-1)
+ self.assertEqual(e.exception.err, -libfdt.BADOFFSET)
+
+ self.assertEqual(-libfdt.BADOFFSET, self.fdt.get_path(-1, quiet=(libfdt.BADOFFSET,)))
+
def testParentOffset(self):
"""Test for the parent_offset() method"""
self.assertEqual(-libfdt.NOTFOUND,
--
2.35.3
^ permalink raw reply related [flat|nested] 7+ messages in thread
* Re: [PATCH v4] pylibfdt: add FdtRo.get_path()
[not found] ` <20220419194537.63170-1-luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
@ 2022-04-19 21:54 ` Simon Glass
[not found] ` <CAPnjgZ2izMUDXJ43jSOzXW7DKbuoN5j26MyKZaLn5Wt2gd28wQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 7+ messages in thread
From: Simon Glass @ 2022-04-19 21:54 UTC (permalink / raw)
To: Luca Weiss; +Cc: Devicetree Compiler
Hi Luca,
On Tue, 19 Apr 2022 at 13:49, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
>
> Add a new Python method wrapping fdt_get_path() from the C API.
>
> Also add a test for the new method.
>
> Signed-off-by: Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
> ---
> Changes since v3:
> * add quiet parameter
> * return integer error when error is quieted
>
> Changes since v2:
> * Remove arbitrary size limit
> * Change size calculation to increase exponentially
> * Add test to verify we still get exceptions with bad parameters
>
> pylibfdt/libfdt.i | 28 ++++++++++++++++++++++++++++
> tests/pylibfdt_tests.py | 13 +++++++++++++
> 2 files changed, 41 insertions(+)
Reviewed-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
You don't check for when it is output of space, but I think that is OK.
>
> diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
> index ac70762..f9f7e7e 100644
> --- a/pylibfdt/libfdt.i
> +++ b/pylibfdt/libfdt.i
> @@ -443,6 +443,29 @@ class FdtRo(object):
> """
> return fdt_get_alias(self._fdt, name)
>
> + def get_path(self, nodeoffset, quiet=()):
> + """Get the full path of a node
> +
> + Args:
> + nodeoffset: Node offset to check
> +
> + Returns:
> + Full path to the node
> +
> + Raises:
> + FdtException if an error occurs
> + """
> + size = 1024
> + while True:
> + ret, path = fdt_get_path(self._fdt, nodeoffset, size)
> + if ret == -NOSPACE:
> + size = size * 2
> + continue
> + err = check_err(ret, quiet)
> + if err:
> + return err
> + return path
> +
> def parent_offset(self, nodeoffset, quiet=()):
> """Get the offset of a node's parent
>
> @@ -1115,6 +1138,11 @@ typedef uint32_t fdt32_t;
> }
> }
>
> +%include "cstring.i"
> +
> +%cstring_output_maxsize(char *buf, int buflen);
> +int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
> +
> /* We have both struct fdt_property and a function fdt_property() */
> %warnfilter(302) fdt_property;
>
> diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
> index 5479363..68d6aaa 100644
> --- a/tests/pylibfdt_tests.py
> +++ b/tests/pylibfdt_tests.py
> @@ -348,6 +348,19 @@ class PyLibfdtBasicTests(unittest.TestCase):
> self.assertEqual("/subnode@1/subsubnode", self.fdt3.get_alias('ss1'))
> self.assertEqual("/subnode@1/subsubnode/subsubsubnode", self.fdt3.get_alias('sss1'))
>
> + def testGetPath(self):
> + """Test for the get_path() method"""
> + node = self.fdt.path_offset('/subnode@1')
> + node2 = self.fdt.path_offset('/subnode@1/subsubnode')
> + self.assertEqual("/subnode@1", self.fdt.get_path(node))
> + self.assertEqual("/subnode@1/subsubnode", self.fdt.get_path(node2))
> +
> + with self.assertRaises(FdtException) as e:
> + self.fdt.get_path(-1)
> + self.assertEqual(e.exception.err, -libfdt.BADOFFSET)
> +
> + self.assertEqual(-libfdt.BADOFFSET, self.fdt.get_path(-1, quiet=(libfdt.BADOFFSET,)))
> +
> def testParentOffset(self):
> """Test for the parent_offset() method"""
> self.assertEqual(-libfdt.NOTFOUND,
> --
> 2.35.3
>
Regards,
Simon
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v4] pylibfdt: add FdtRo.get_path()
[not found] ` <CAPnjgZ2izMUDXJ43jSOzXW7DKbuoN5j26MyKZaLn5Wt2gd28wQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2022-04-20 2:56 ` David Gibson
2022-04-20 18:19 ` Luca Weiss
0 siblings, 1 reply; 7+ messages in thread
From: David Gibson @ 2022-04-20 2:56 UTC (permalink / raw)
To: Simon Glass; +Cc: Luca Weiss, Devicetree Compiler
[-- Attachment #1: Type: text/plain, Size: 4015 bytes --]
On Tue, Apr 19, 2022 at 03:54:07PM -0600, Simon Glass wrote:
> Hi Luca,
>
> On Tue, 19 Apr 2022 at 13:49, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
> >
> > Add a new Python method wrapping fdt_get_path() from the C API.
> >
> > Also add a test for the new method.
> >
> > Signed-off-by: Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
> > ---
> > Changes since v3:
> > * add quiet parameter
> > * return integer error when error is quieted
> >
> > Changes since v2:
> > * Remove arbitrary size limit
> > * Change size calculation to increase exponentially
> > * Add test to verify we still get exceptions with bad parameters
> >
> > pylibfdt/libfdt.i | 28 ++++++++++++++++++++++++++++
> > tests/pylibfdt_tests.py | 13 +++++++++++++
> > 2 files changed, 41 insertions(+)
>
> Reviewed-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>
> You don't check for when it is output of space, but I think that is
> OK.
Right, a testcase for that would be good, but it can be a follow up.
Applied.
>
> >
> > diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
> > index ac70762..f9f7e7e 100644
> > --- a/pylibfdt/libfdt.i
> > +++ b/pylibfdt/libfdt.i
> > @@ -443,6 +443,29 @@ class FdtRo(object):
> > """
> > return fdt_get_alias(self._fdt, name)
> >
> > + def get_path(self, nodeoffset, quiet=()):
> > + """Get the full path of a node
> > +
> > + Args:
> > + nodeoffset: Node offset to check
> > +
> > + Returns:
> > + Full path to the node
> > +
> > + Raises:
> > + FdtException if an error occurs
> > + """
> > + size = 1024
> > + while True:
> > + ret, path = fdt_get_path(self._fdt, nodeoffset, size)
> > + if ret == -NOSPACE:
> > + size = size * 2
> > + continue
> > + err = check_err(ret, quiet)
> > + if err:
> > + return err
> > + return path
> > +
> > def parent_offset(self, nodeoffset, quiet=()):
> > """Get the offset of a node's parent
> >
> > @@ -1115,6 +1138,11 @@ typedef uint32_t fdt32_t;
> > }
> > }
> >
> > +%include "cstring.i"
> > +
> > +%cstring_output_maxsize(char *buf, int buflen);
> > +int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int buflen);
> > +
> > /* We have both struct fdt_property and a function fdt_property() */
> > %warnfilter(302) fdt_property;
> >
> > diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
> > index 5479363..68d6aaa 100644
> > --- a/tests/pylibfdt_tests.py
> > +++ b/tests/pylibfdt_tests.py
> > @@ -348,6 +348,19 @@ class PyLibfdtBasicTests(unittest.TestCase):
> > self.assertEqual("/subnode@1/subsubnode", self.fdt3.get_alias('ss1'))
> > self.assertEqual("/subnode@1/subsubnode/subsubsubnode", self.fdt3.get_alias('sss1'))
> >
> > + def testGetPath(self):
> > + """Test for the get_path() method"""
> > + node = self.fdt.path_offset('/subnode@1')
> > + node2 = self.fdt.path_offset('/subnode@1/subsubnode')
> > + self.assertEqual("/subnode@1", self.fdt.get_path(node))
> > + self.assertEqual("/subnode@1/subsubnode", self.fdt.get_path(node2))
> > +
> > + with self.assertRaises(FdtException) as e:
> > + self.fdt.get_path(-1)
> > + self.assertEqual(e.exception.err, -libfdt.BADOFFSET)
> > +
> > + self.assertEqual(-libfdt.BADOFFSET, self.fdt.get_path(-1, quiet=(libfdt.BADOFFSET,)))
> > +
> > def testParentOffset(self):
> > """Test for the parent_offset() method"""
> > self.assertEqual(-libfdt.NOTFOUND,
> >
>
> Regards,
> Simon
>
--
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
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v4] pylibfdt: add FdtRo.get_path()
2022-04-20 2:56 ` David Gibson
@ 2022-04-20 18:19 ` Luca Weiss
2022-04-20 21:29 ` Simon Glass
2022-04-26 6:28 ` David Gibson
0 siblings, 2 replies; 7+ messages in thread
From: Luca Weiss @ 2022-04-20 18:19 UTC (permalink / raw)
To: Simon Glass, David Gibson; +Cc: Devicetree Compiler
Hi Simon and David,
On Mittwoch, 20. April 2022 04:56:15 CEST David Gibson wrote:
> On Tue, Apr 19, 2022 at 03:54:07PM -0600, Simon Glass wrote:
> > Hi Luca,
> >
> > On Tue, 19 Apr 2022 at 13:49, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
> > > Add a new Python method wrapping fdt_get_path() from the C API.
> > >
> > > Also add a test for the new method.
> > >
> > > Signed-off-by: Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
> > > ---
> > > Changes since v3:
> > > * add quiet parameter
> > > * return integer error when error is quieted
> > >
> > > Changes since v2:
> > > * Remove arbitrary size limit
> > > * Change size calculation to increase exponentially
> > > * Add test to verify we still get exceptions with bad parameters
> > >
> > > pylibfdt/libfdt.i | 28 ++++++++++++++++++++++++++++
> > > tests/pylibfdt_tests.py | 13 +++++++++++++
> > > 2 files changed, 41 insertions(+)
> >
> > Reviewed-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
> >
> > You don't check for when it is output of space, but I think that is
> > OK.
>
> Right, a testcase for that would be good, but it can be a follow up.
I don't quite understand what you mean "is output of space".
Maybe you mean a test for when the string is longer than 1024 characters
("size = 1024") so the size increase gets triggered?
If yes, then I did test that manually before by setting the value absurdly
low. Not sure how to properly check that in the tests though. Add a node with
a super long name into the test dtb?
>
> Applied.
Thanks!
Regards
Luca
>
> > > diff --git a/pylibfdt/libfdt.i b/pylibfdt/libfdt.i
> > > index ac70762..f9f7e7e 100644
> > > --- a/pylibfdt/libfdt.i
> > > +++ b/pylibfdt/libfdt.i
> > >
> > > @@ -443,6 +443,29 @@ class FdtRo(object):
> > > """
> > > return fdt_get_alias(self._fdt, name)
> > >
> > > + def get_path(self, nodeoffset, quiet=()):
> > > + """Get the full path of a node
> > > +
> > > + Args:
> > > + nodeoffset: Node offset to check
> > > +
> > > + Returns:
> > > + Full path to the node
> > > +
> > > + Raises:
> > > + FdtException if an error occurs
> > > + """
> > > + size = 1024
> > > + while True:
> > > + ret, path = fdt_get_path(self._fdt, nodeoffset, size)
> > > + if ret == -NOSPACE:
> > > + size = size * 2
> > > + continue
> > > + err = check_err(ret, quiet)
> > > + if err:
> > > + return err
> > > + return path
> > > +
> > >
> > > def parent_offset(self, nodeoffset, quiet=()):
> > > """Get the offset of a node's parent
> > >
> > > @@ -1115,6 +1138,11 @@ typedef uint32_t fdt32_t;
> > >
> > > }
> > >
> > > }
> > >
> > > +%include "cstring.i"
> > > +
> > > +%cstring_output_maxsize(char *buf, int buflen);
> > > +int fdt_get_path(const void *fdt, int nodeoffset, char *buf, int
> > > buflen);
> > > +
> > >
> > > /* We have both struct fdt_property and a function fdt_property() */
> > > %warnfilter(302) fdt_property;
> > >
> > > diff --git a/tests/pylibfdt_tests.py b/tests/pylibfdt_tests.py
> > > index 5479363..68d6aaa 100644
> > > --- a/tests/pylibfdt_tests.py
> > > +++ b/tests/pylibfdt_tests.py
> > >
> > > @@ -348,6 +348,19 @@ class PyLibfdtBasicTests(unittest.TestCase):
> > > self.assertEqual("/subnode@1/subsubnode",
> > > self.fdt3.get_alias('ss1'))
> > > self.assertEqual("/subnode@1/subsubnode/subsubsubnode",
> > > self.fdt3.get_alias('sss1'))> >
> > > + def testGetPath(self):
> > > + """Test for the get_path() method"""
> > > + node = self.fdt.path_offset('/subnode@1')
> > > + node2 = self.fdt.path_offset('/subnode@1/subsubnode')
> > > + self.assertEqual("/subnode@1", self.fdt.get_path(node))
> > > + self.assertEqual("/subnode@1/subsubnode",
> > > self.fdt.get_path(node2)) +
> > > + with self.assertRaises(FdtException) as e:
> > > + self.fdt.get_path(-1)
> > > + self.assertEqual(e.exception.err, -libfdt.BADOFFSET)
> > > +
> > > + self.assertEqual(-libfdt.BADOFFSET, self.fdt.get_path(-1,
> > > quiet=(libfdt.BADOFFSET,))) +
> > >
> > > def testParentOffset(self):
> > > """Test for the parent_offset() method"""
> > > self.assertEqual(-libfdt.NOTFOUND,
> >
> > Regards,
> > Simon
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v4] pylibfdt: add FdtRo.get_path()
2022-04-20 18:19 ` Luca Weiss
@ 2022-04-20 21:29 ` Simon Glass
[not found] ` <CAPnjgZ2CjKLrCXEcBH0vTN77d7zk29dxnmRta4tTR_Th2arBzQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2022-04-26 6:28 ` David Gibson
1 sibling, 1 reply; 7+ messages in thread
From: Simon Glass @ 2022-04-20 21:29 UTC (permalink / raw)
To: Luca Weiss; +Cc: David Gibson, Devicetree Compiler
Hi Luca,
On Wed, 20 Apr 2022 at 12:20, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
>
> Hi Simon and David,
>
> On Mittwoch, 20. April 2022 04:56:15 CEST David Gibson wrote:
> > On Tue, Apr 19, 2022 at 03:54:07PM -0600, Simon Glass wrote:
> > > Hi Luca,
> > >
> > > On Tue, 19 Apr 2022 at 13:49, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
> > > > Add a new Python method wrapping fdt_get_path() from the C API.
> > > >
> > > > Also add a test for the new method.
> > > >
> > > > Signed-off-by: Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
> > > > ---
> > > > Changes since v3:
> > > > * add quiet parameter
> > > > * return integer error when error is quieted
> > > >
> > > > Changes since v2:
> > > > * Remove arbitrary size limit
> > > > * Change size calculation to increase exponentially
> > > > * Add test to verify we still get exceptions with bad parameters
> > > >
> > > > pylibfdt/libfdt.i | 28 ++++++++++++++++++++++++++++
> > > > tests/pylibfdt_tests.py | 13 +++++++++++++
> > > > 2 files changed, 41 insertions(+)
> > >
> > > Reviewed-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
> > >
> > > You don't check for when it is output of space, but I think that is
> > > OK.
> >
> > Right, a testcase for that would be good, but it can be a follow up.
>
> I don't quite understand what you mean "is output of space".
is out of space (sorry)
>
> Maybe you mean a test for when the string is longer than 1024 characters
> ("size = 1024") so the size increase gets triggered?
>
> If yes, then I did test that manually before by setting the value absurdly
> low. Not sure how to properly check that in the tests though. Add a node with
> a super long name into the test dtb?
Another option is to add a parameter for the max size, just for
testing, but I doubt David would like that!
You could have a SIZE_INCREMENT = 1024 at the top of the file, then
change it in a try/finally clause in your test.
>
> >
> > Applied.
>
> Thanks!
>
> Regards
> Luca
Regards,
Simon
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v4] pylibfdt: add FdtRo.get_path()
2022-04-20 18:19 ` Luca Weiss
2022-04-20 21:29 ` Simon Glass
@ 2022-04-26 6:28 ` David Gibson
1 sibling, 0 replies; 7+ messages in thread
From: David Gibson @ 2022-04-26 6:28 UTC (permalink / raw)
To: Luca Weiss; +Cc: Simon Glass, Devicetree Compiler
[-- Attachment #1: Type: text/plain, Size: 2370 bytes --]
On Wed, Apr 20, 2022 at 08:19:43PM +0200, Luca Weiss wrote:
> Hi Simon and David,
>
> On Mittwoch, 20. April 2022 04:56:15 CEST David Gibson wrote:
> > On Tue, Apr 19, 2022 at 03:54:07PM -0600, Simon Glass wrote:
> > > Hi Luca,
> > >
> > > On Tue, 19 Apr 2022 at 13:49, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
> > > > Add a new Python method wrapping fdt_get_path() from the C API.
> > > >
> > > > Also add a test for the new method.
> > > >
> > > > Signed-off-by: Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
> > > > ---
> > > > Changes since v3:
> > > > * add quiet parameter
> > > > * return integer error when error is quieted
> > > >
> > > > Changes since v2:
> > > > * Remove arbitrary size limit
> > > > * Change size calculation to increase exponentially
> > > > * Add test to verify we still get exceptions with bad parameters
> > > >
> > > > pylibfdt/libfdt.i | 28 ++++++++++++++++++++++++++++
> > > > tests/pylibfdt_tests.py | 13 +++++++++++++
> > > > 2 files changed, 41 insertions(+)
> > >
> > > Reviewed-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
> > >
> > > You don't check for when it is output of space, but I think that is
> > > OK.
> >
> > Right, a testcase for that would be good, but it can be a follow up.
>
> I don't quite understand what you mean "is output of space".
>
> Maybe you mean a test for when the string is longer than 1024 characters
> ("size = 1024") so the size increase gets triggered?
That's what I was thinking, yes.
> If yes, then I did test that manually before by setting the value absurdly
> low. Not sure how to properly check that in the tests though. Add a node with
> a super long name into the test dtb?
Not to the main "test_tree1" dtb, but you could use a different dtb
with a large property. You could make one, or use an existing one
with a long property - look for references to 'lorem.txt` in
run_tests.sh for one example already creating and using a long
property.
Alternatively you could add an extra parameter to the Python wrapper
giving a "hint" size for the initial buffer.
--
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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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v4] pylibfdt: add FdtRo.get_path()
[not found] ` <CAPnjgZ2CjKLrCXEcBH0vTN77d7zk29dxnmRta4tTR_Th2arBzQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2022-04-26 6:29 ` David Gibson
0 siblings, 0 replies; 7+ messages in thread
From: David Gibson @ 2022-04-26 6:29 UTC (permalink / raw)
To: Simon Glass; +Cc: Luca Weiss, Devicetree Compiler
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On Wed, Apr 20, 2022 at 03:29:49PM -0600, Simon Glass wrote:
> Hi Luca,
>
> On Wed, 20 Apr 2022 at 12:20, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
> >
> > Hi Simon and David,
> >
> > On Mittwoch, 20. April 2022 04:56:15 CEST David Gibson wrote:
> > > On Tue, Apr 19, 2022 at 03:54:07PM -0600, Simon Glass wrote:
> > > > Hi Luca,
> > > >
> > > > On Tue, 19 Apr 2022 at 13:49, Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org> wrote:
> > > > > Add a new Python method wrapping fdt_get_path() from the C API.
> > > > >
> > > > > Also add a test for the new method.
> > > > >
> > > > > Signed-off-by: Luca Weiss <luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
> > > > > ---
> > > > > Changes since v3:
> > > > > * add quiet parameter
> > > > > * return integer error when error is quieted
> > > > >
> > > > > Changes since v2:
> > > > > * Remove arbitrary size limit
> > > > > * Change size calculation to increase exponentially
> > > > > * Add test to verify we still get exceptions with bad parameters
> > > > >
> > > > > pylibfdt/libfdt.i | 28 ++++++++++++++++++++++++++++
> > > > > tests/pylibfdt_tests.py | 13 +++++++++++++
> > > > > 2 files changed, 41 insertions(+)
> > > >
> > > > Reviewed-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
> > > >
> > > > You don't check for when it is output of space, but I think that is
> > > > OK.
> > >
> > > Right, a testcase for that would be good, but it can be a follow up.
> >
> > I don't quite understand what you mean "is output of space".
>
> is out of space (sorry)
>
> >
> > Maybe you mean a test for when the string is longer than 1024 characters
> > ("size = 1024") so the size increase gets triggered?
> >
> > If yes, then I did test that manually before by setting the value absurdly
> > low. Not sure how to properly check that in the tests though. Add a node with
> > a super long name into the test dtb?
>
> Another option is to add a parameter for the max size, just for
> testing, but I doubt David would like that!
Actually I'm fine with adding a "hint" size as a parameter - as long
as it's optional with a a sensible default.
> You could have a SIZE_INCREMENT = 1024 at the top of the file, then
> change it in a try/finally clause in your test.
>
> >
> > >
> > > Applied.
> >
> > Thanks!
> >
> > Regards
> > Luca
>
> Regards,
> Simon
>
--
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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^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2022-04-26 6:29 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-04-19 19:45 [PATCH v4] pylibfdt: add FdtRo.get_path() Luca Weiss
[not found] ` <20220419194537.63170-1-luca-IfPCFPJWly+lVyrhU4qvOw@public.gmane.org>
2022-04-19 21:54 ` Simon Glass
[not found] ` <CAPnjgZ2izMUDXJ43jSOzXW7DKbuoN5j26MyKZaLn5Wt2gd28wQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2022-04-20 2:56 ` David Gibson
2022-04-20 18:19 ` Luca Weiss
2022-04-20 21:29 ` Simon Glass
[not found] ` <CAPnjgZ2CjKLrCXEcBH0vTN77d7zk29dxnmRta4tTR_Th2arBzQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2022-04-26 6:29 ` David Gibson
2022-04-26 6:28 ` David Gibson
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