svn commit: r288362 - head/sys/cddl/dev/sdt
Andriy Gapon
avg at FreeBSD.org
Fri Oct 2 19:47:34 UTC 2015
On 02/10/2015 20:54, Rui Paulo wrote:
> On Tue, 2015-09-29 at 11:58 +0000, Andriy Gapon wrote:
>> Author: avg
>> Date: Tue Sep 29 11:58:21 2015
>> New Revision: 288362
>> URL: https://svnweb.freebsd.org/changeset/base/288362
>>
>> Log:
>> sdt: start checking version field when parsing probe definitions
>>
>> This is an extra safety measure.
>>
>> MFC after: 21 days
>>
>> Modified:
>> head/sys/cddl/dev/sdt/sdt.c
>>
>> Modified: head/sys/cddl/dev/sdt/sdt.c
>> =====================================================================
>> =========
>> --- head/sys/cddl/dev/sdt/sdt.c Tue Sep 29 11:55:26 2015
>> (r288361)
>> +++ head/sys/cddl/dev/sdt/sdt.c Tue Sep 29 11:58:21 2015
>> (r288362)
>> @@ -141,6 +141,12 @@ sdt_create_probe(struct sdt_probe *probe
>> char *to;
>> size_t len;
>>
>> + if (probe->version != (int)sizeof(*probe)) {
>> + printf("ignoring probe %p, version %u expected
>> %u\n",
>> + probe, probe->version, (int)sizeof(*probe));
>> + return;
>> + }
>> +
>>
>
> Not picking on your change, but this version management sounds like a
> bad idea to me...
>
It's certainly not very robust, but I think that it's better than nothing.
Having proper SDT binary layout versions would be better, of course.
--
Andriy Gapon
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