* [PATCH] makedevs: don't restrict device node paths to 40 characters
@ 2016-09-12 20:14 Andre McCurdy
2016-10-02 20:37 ` Khem Raj
0 siblings, 1 reply; 4+ messages in thread
From: Andre McCurdy @ 2016-09-12 20:14 UTC (permalink / raw)
To: openembedded-core
40 character paths work OK for device nodes in /dev but not for
device nodes created in a chroot, LXC container, etc.
Since the 'path' array is already a 4k buffer, the sscanf 40
character limit seems to be a typo or historical mis-merge. Update
the sscanf limit and bring the code in sync with the Buildroot
version:
https://git.buildroot.net/buildroot/commit/?id=8876b6751e0bc19a3754290061808f0f8420708e
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
---
meta/recipes-devtools/makedevs/makedevs/makedevs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/meta/recipes-devtools/makedevs/makedevs/makedevs.c b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
index 7471f3f..cba7681 100644
--- a/meta/recipes-devtools/makedevs/makedevs/makedevs.c
+++ b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
@@ -360,7 +360,7 @@ static int interpret_table_entry(char *line)
unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0;
unsigned long start = 0, increment = 1, count = 0;
- if (0 > sscanf(line, "%40s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
+ if (0 > sscanf(line, "%4095s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
&type, &mode, usr_buf, grp_buf, &major, &minor, &start,
&increment, &count))
{
--
1.9.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] makedevs: don't restrict device node paths to 40 characters
2016-09-12 20:14 [PATCH] makedevs: don't restrict device node paths to 40 characters Andre McCurdy
@ 2016-10-02 20:37 ` Khem Raj
2016-10-03 6:41 ` Andre McCurdy
0 siblings, 1 reply; 4+ messages in thread
From: Khem Raj @ 2016-10-02 20:37 UTC (permalink / raw)
To: Andre McCurdy; +Cc: openembedded-core
[-- Attachment #1: Type: text/plain, Size: 1733 bytes --]
> On Sep 12, 2016, at 1:14 PM, Andre McCurdy <armccurdy@gmail.com> wrote:
>
> 40 character paths work OK for device nodes in /dev but not for
> device nodes created in a chroot, LXC container, etc.
>
> Since the 'path' array is already a 4k buffer, the sscanf 40
> character limit seems to be a typo or historical mis-merge. Update
> the sscanf limit and bring the code in sync with the Buildroot
> version:
>
> https://git.buildroot.net/buildroot/commit/?id=8876b6751e0bc19a3754290061808f0f8420708e
what is upstream worthiness of this patch ? it seems it could be
a good change
>
> Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
> ---
> meta/recipes-devtools/makedevs/makedevs/makedevs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/meta/recipes-devtools/makedevs/makedevs/makedevs.c b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
> index 7471f3f..cba7681 100644
> --- a/meta/recipes-devtools/makedevs/makedevs/makedevs.c
> +++ b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
> @@ -360,7 +360,7 @@ static int interpret_table_entry(char *line)
> unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0;
> unsigned long start = 0, increment = 1, count = 0;
>
> - if (0 > sscanf(line, "%40s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
> + if (0 > sscanf(line, "%4095s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
> &type, &mode, usr_buf, grp_buf, &major, &minor, &start,
> &increment, &count))
> {
> --
> 1.9.1
>
> --
> _______________________________________________
> Openembedded-core mailing list
> Openembedded-core@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
[-- Attachment #2: Message signed with OpenPGP using GPGMail --]
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] makedevs: don't restrict device node paths to 40 characters
2016-10-02 20:37 ` Khem Raj
@ 2016-10-03 6:41 ` Andre McCurdy
2016-10-03 23:41 ` Khem Raj
0 siblings, 1 reply; 4+ messages in thread
From: Andre McCurdy @ 2016-10-03 6:41 UTC (permalink / raw)
To: Khem Raj; +Cc: OE Core mailing list
On Sun, Oct 2, 2016 at 1:37 PM, Khem Raj <raj.khem@gmail.com> wrote:
>
>> On Sep 12, 2016, at 1:14 PM, Andre McCurdy <armccurdy@gmail.com> wrote:
>>
>> 40 character paths work OK for device nodes in /dev but not for
>> device nodes created in a chroot, LXC container, etc.
>>
>> Since the 'path' array is already a 4k buffer, the sscanf 40
>> character limit seems to be a typo or historical mis-merge. Update
>> the sscanf limit and bring the code in sync with the Buildroot
>> version:
>>
>> https://git.buildroot.net/buildroot/commit/?id=8876b6751e0bc19a3754290061808f0f8420708e
>
> what is upstream worthiness of this patch ? it seems it could be
> a good change
Where is the upstream?
>>
>> Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
>> ---
>> meta/recipes-devtools/makedevs/makedevs/makedevs.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/meta/recipes-devtools/makedevs/makedevs/makedevs.c b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
>> index 7471f3f..cba7681 100644
>> --- a/meta/recipes-devtools/makedevs/makedevs/makedevs.c
>> +++ b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
>> @@ -360,7 +360,7 @@ static int interpret_table_entry(char *line)
>> unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0;
>> unsigned long start = 0, increment = 1, count = 0;
>>
>> - if (0 > sscanf(line, "%40s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
>> + if (0 > sscanf(line, "%4095s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
>> &type, &mode, usr_buf, grp_buf, &major, &minor, &start,
>> &increment, &count))
>> {
>> --
>> 1.9.1
>>
>> --
>> _______________________________________________
>> Openembedded-core mailing list
>> Openembedded-core@lists.openembedded.org
>> http://lists.openembedded.org/mailman/listinfo/openembedded-core
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] makedevs: don't restrict device node paths to 40 characters
2016-10-03 6:41 ` Andre McCurdy
@ 2016-10-03 23:41 ` Khem Raj
0 siblings, 0 replies; 4+ messages in thread
From: Khem Raj @ 2016-10-03 23:41 UTC (permalink / raw)
To: Andre McCurdy; +Cc: OE Core mailing list
[-- Attachment #1: Type: text/plain, Size: 2121 bytes --]
> On Oct 2, 2016, at 11:41 PM, Andre McCurdy <armccurdy@gmail.com> wrote:
>
> On Sun, Oct 2, 2016 at 1:37 PM, Khem Raj <raj.khem@gmail.com> wrote:
>>
>>> On Sep 12, 2016, at 1:14 PM, Andre McCurdy <armccurdy@gmail.com> wrote:
>>>
>>> 40 character paths work OK for device nodes in /dev but not for
>>> device nodes created in a chroot, LXC container, etc.
>>>
>>> Since the 'path' array is already a 4k buffer, the sscanf 40
>>> character limit seems to be a typo or historical mis-merge. Update
>>> the sscanf limit and bring the code in sync with the Buildroot
>>> version:
>>>
>>> https://git.buildroot.net/buildroot/commit/?id=8876b6751e0bc19a3754290061808f0f8420708e
>>
>> what is upstream worthiness of this patch ? it seems it could be
>> a good change
>
> Where is the upstream?
mtd-utils, but in this case it seems its a back port so we are fine.
>
>>>
>>> Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
>>> ---
>>> meta/recipes-devtools/makedevs/makedevs/makedevs.c | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/meta/recipes-devtools/makedevs/makedevs/makedevs.c b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
>>> index 7471f3f..cba7681 100644
>>> --- a/meta/recipes-devtools/makedevs/makedevs/makedevs.c
>>> +++ b/meta/recipes-devtools/makedevs/makedevs/makedevs.c
>>> @@ -360,7 +360,7 @@ static int interpret_table_entry(char *line)
>>> unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0;
>>> unsigned long start = 0, increment = 1, count = 0;
>>>
>>> - if (0 > sscanf(line, "%40s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
>>> + if (0 > sscanf(line, "%4095s %c %lo %40s %40s %lu %lu %lu %lu %lu", path,
>>> &type, &mode, usr_buf, grp_buf, &major, &minor, &start,
>>> &increment, &count))
>>> {
>>> --
>>> 1.9.1
>>>
>>> --
>>> _______________________________________________
>>> Openembedded-core mailing list
>>> Openembedded-core@lists.openembedded.org
>>> http://lists.openembedded.org/mailman/listinfo/openembedded-core
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^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-09-12 20:14 [PATCH] makedevs: don't restrict device node paths to 40 characters Andre McCurdy
2016-10-02 20:37 ` Khem Raj
2016-10-03 6:41 ` Andre McCurdy
2016-10-03 23:41 ` Khem Raj
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