Roberto Riggio wrote:
> Hi,
>
Hi!
> i have a problem with a simple daemon that I'm writing (the problem
> is not happening on the x86 target).
>
probably due to diff C libraries...
> Basically the piece of code that is creating the problem is the following:
>
> #include <arpa/inet.h>
>
> int main()
> {
> struct sockaddr_in addr_1, addr_2, addr_3;
>
/*make sure the result isn't from uninit mem*/
memset(&addr_1, 0, sizeof(struct sockaddr_in));
memset(&addr_2, 0, sizeof(struct sockaddr_in));
memset(&addr_3, 0, sizeof(struct aockaddr_in));
> addr_1.sin_addr = inet_makeaddr(127, 1);
> addr_2.sin_addr = inet_makeaddr(0, 0);
> addr_3.sin_addr.s_addr = INADDR_ANY;
>
man inet_makeaddr:
### Begin ########################
inet_lnaof(), inet_netof(), and inet_makeaddr() are legacy functions
that assume they are dealing with classful network addresses. Classful
networking divides IPv4 network addresses into host and network compo-
nents at byte boundaries, as follows:
...
Classful network addresses are now obsolete, having been superseded by
Classless Inter-Domain Routing (CIDR), which divides addresses into
network and host components at arbitrary bit (rather than byte) bound-
aries.
### End ##########################
I suspect the target C library thinks inet_makeaddr() is legacy.
Is there a reason you need to use inet_makeaddr() vice inet_aton()?
> printf("Server (1), binded to %s\n",inet_ntoa(addr_1.sin_addr));
> printf("Server (2), binded to %s\n",inet_ntoa(addr_2.sin_addr));
> printf("Server (3), binded to %s\n",inet_ntoa(addr_3.sin_addr));
>
> return 0;
> }
>
> the output of this code on an ixp4xx target is the following:
>
> Server (1), binded to 0.0.133.112
> Server (2), binded to 0.0.133.112
> Server (3), binded to 0.0.0.0
>
> While it should be 127.0.0.1 on the first case and 0.0.0.0 on the second
> and the third cases.
>
My guess is uncleared memory and inet_makeaddr() failing. If you can use
inet_aton(), do so and check the return value.
hth,
Jason.
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