modprobe: cannot parse modules.dep error

modprobe: cannot parse modules.dep error

[Saravanan Chanemouganandam]

Hi all,

I am running into the following problem when invoking a netfilter iptables
( v1.3.8) and xtables support in the buildroot's busybox (v1.7.2) system. The 
netfilter packet configuration and support modules are compiled and built 
into the linux-2.6.16 kernel image.

When a 'C++' application code calls the iptables  through 
sprintf(buff, "%s -t mangle -A PREROUTING %s -j MARK --set-mark 512", 
Config.iptables, Config.link[i]);
it throws the modprobe error.

iptables -t mangle -A PREROUTING -d 88.160.215.156 -p icmp -j MARK --set-mark 
512
modprobe: cannot parse modules.dep
modprobe: cannot parse modules.dep
iptables -t mangle -A PREROUTING -s 88.160.215.156 -p icmp -j MARK --set-mark 
512
modprobe: cannot parse modules.dep
modprobe: cannot parse modules.dep
iptables -t mangle -A PREROUTING -d 88.160.215.156 -p tcp --dport http -j MARK 
--set-mark 512
modprobe: cannot parse modules.dep
modprobe: cannot parse modules.dep

Normally it shouldn't do module probing as all the netfilter support symbols 
are included in the kernel image. Can anybody tell me why the system throws 
the modprobe error though the netfilters supports are built into the kernel 
image.?

Thanks
Sara
Osmozis

Re: modprobe: cannot parse modules.dep error

[Denys Vlasenko]

On Tuesday 18 December 2007 09:32, Saravanan Chanemouganandam wrote:
> Hi all,
>
> I am running into the following problem when invoking a netfilter iptables
> ( v1.3.8) and xtables support in the buildroot's busybox (v1.7.2) system.
> The netfilter packet configuration and support modules are compiled and
> built into the linux-2.6.16 kernel image.
>
> When a 'C++' application code calls the iptables  through
> sprintf(buff, "%s -t mangle -A PREROUTING %s -j MARK --set-mark 512",
> Config.iptables, Config.link[i]);
> it throws the modprobe error.
>
> iptables -t mangle -A PREROUTING -d 88.160.215.156 -p icmp -j MARK
> --set-mark 512
> modprobe: cannot parse modules.dep
> modprobe: cannot parse modules.dep
> iptables -t mangle -A PREROUTING -s 88.160.215.156 -p icmp -j MARK
> --set-mark 512
> modprobe: cannot parse modules.dep
> modprobe: cannot parse modules.dep
> iptables -t mangle -A PREROUTING -d 88.160.215.156 -p tcp --dport http -j
> MARK --set-mark 512
> modprobe: cannot parse modules.dep

Can you try the following in modprobe.c?

static struct dep_t *build_dep(void) 
{
...
        filename = xasprintf("/lib/modules/%s/modules.dep", un.release);
        fd = open(filename, O_RDONLY);
        if (ENABLE_FEATURE_CLEAN_UP)
                free(filename);
        if (fd < 0) {
                /* Ok, that didn't work.  Fall back to looking in /lib/modules */
                fd = open("/lib/modules/modules.dep", O_RDONLY);
                if (fd < 0) {
-                       bb_error_msg_and_die("cannot parse modules.dep");
+                       bb_error_msg("cannot parse modules.dep");
+                       return NULL;
                }
        }
...


--
vda