>>>>> On Thu, 20 Oct 2005 17:14:26 -0500, Steve Greenland <[EMAIL PROTECTED]>
>>>>> said:
Steve> (No need to CC me, I'm on the list)
Ah, sorry.
Steve> On Thu, Oct 20, 2005 at 10:31:04PM +0100, Martin Simmons wrote:
>> A common reason for this problem is that the padding bytes at the end of
the
>> sockaddr_in object (called something like sin_zero) are not actually zero.
>> Typically this happens when the code fails to initialize them.
>>
>> Unfortunately, there has been an outbreak of C++ in this code so it is
>> impossible to be sure whether it does this :-(
Steve> Heh.
>> If you can look at the raw bytes passed to bind() in the debugger,
>> then you might be able to see what they are.
Steve> Ok, I stepped to the point just before the call to bind, and printed
Steve> what I *think* is the relevant portion:
Steve> (gdb) print/x *(p->saddr4)
Steve> $3 = {sin_len = 0x10, sin_family = 0x2, sin_port = 0x238e, sin_addr = {
Steve> s_addr = 0x7f000001}, sin_zero = {0x55, 0x55, 0x55, 0x55, 0x55,
0x55,
Steve> 0x55, 0x55}}
Steve> And yes, you're correct, the extra stuff is not zero. Gotcha, you
little
Steve> bugger.
Steve> So: in src/lib/address_conf.c, for both constructors:
Steve> IPADDR::IPADDR(const IPADDR &src) : type(src.type)
Steve> IPADDR::IPADDR(int af) : type(R_EMPTY)
Steve> add:
Steve> memset(&saddrbuf, 0, sizeof(saddrbuf));
Steve> before doing anything else to/with saddrbuf.
Steve> This fixes the problem: I can now bind to arbitrary addresses (well, at
Steve> least the ones that exist on the box).
Steve> Martin, you're my new hero. Kern, did you catch this? Should I send
Steve> the patch someplace specific? Actually, I prefer that someone who
Steve> actually understands C++ confirm that this is patch is both correct and
Steve> sufficient...
Possibly the IPADDR::IPADDR(const IPADDR &src) method doesn't need it, because
it copies the saddrbuf of an existing one?
Anyway, I suggest sending the patch to the bacula-devel list.
__Martin
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