Hi,
I was writing a hook for netfilter. How should I insert the hook into
the kernel?
Could someone tell me how to compile the hook files. When I compile I
get this error:
-------------------
In file included from /usr/include/linux/module.h:10,
from ipt_test.c:4:
/usr/include/linux/config.h:5:2: #error Incorrectly using glibc
headers for a kernel module
ipt_test.c:6:26: linux/skbuff.h: No such file or directory
In file included from ipt_test.c:7:
/usr/include/linux/ip.h:97: error: syntax error before "uint8_t"
/usr/include/linux/ip.h:104: error: syntax error before "tot_len"
/usr/include/linux/ip.h:105: error: syntax error before "id"
/usr/include/linux/ip.h:106: error: syntax error before "frag_off"
/usr/include/linux/ip.h:107: error: syntax error before "ttl"
/usr/include/linux/ip.h:108: error: syntax error before "protocol"
/usr/include/linux/ip.h:109: error: syntax error before "check"
/usr/include/linux/ip.h:110: error: syntax error before "saddr"
/usr/include/linux/ip.h:111: error: syntax error before "daddr"
In file included from ipt_test.c:9:
/usr/include/linux/netfilter_ipv4.h:53: error: `INT_MIN' undeclared
here (not in a function)
/usr/include/linux/netfilter_ipv4.h:53: error: enumerator value for
`NF_IP_PRI_FIRST' not integer constant
/usr/include/linux/netfilter_ipv4.h:59: error: `INT_MAX' undeclared
here (not in a function)
/usr/include/linux/netfilter_ipv4.h:59: error: enumerator value for
`NF_IP_PRI_LAST' not integer constant
ipt_test.c:22: warning: "struct net_device" declared inside parameter list
ipt_test.c:22: warning: its scope is only this definition or
declaration, which is probably not what you want
ipt_test.c:22: warning: "struct sk_buff" declared inside parameter list
ipt_test.c: In function `hook_func':
ipt_test.c:26: error: dereferencing pointer to incomplete type
ipt_test.c: In function `init_module':
ipt_test.c:40: error: invalid use of undefined type `struct nf_hook_ops'
ipt_test.c:42: error: invalid use of undefined type `struct nf_hook_ops'
ipt_test.c:43: error: invalid use of undefined type `struct nf_hook_ops'
ipt_test.c:43: error: `PF_INET' undeclared (first use in this function)
ipt_test.c:43: error: (Each undeclared identifier is reported only once
ipt_test.c:43: error: for each function it appears in.)
ipt_test.c:44: error: invalid use of undefined type `struct nf_hook_ops'
ipt_test.c: At top level:
ipt_test.c:12: error: storage size of `nfho' isn't known
------------------------
Thanks,
Rajat.
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