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分享关于 netfilter module
有没有人看过write new netfilter module ，我看了后按照他上面的代码写了一道，在编译的时候就是通不过，老是冒一些莫名其妙的警告和错误，我的系统是redhat 9 内核没有编译，编译
gcc -O -c -Wall testmodules.c ，能够提供点问题出现的原因吗？谢谢！
gcc -O -c -Wall testmodules.c ，能够提供点问题出现的原因吗？谢谢！
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rhzhzh 2003-09-09
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哦！对不起错误是：
In file included from testmodules.c:9:
/usr/include/linux/netfilter_ipv4.h:53: `INT_MIN' undeclared here (not in a function)
/usr/include/linux/netfilter_ipv4.h:53: enumerator value for `NF_IP_PRI_FIRST' not integer constant
/usr/include/linux/netfilter_ipv4.h:59: `INT_MAX' undeclared here (not in a function)
/usr/include/linux/netfilter_ipv4.h:59: enumerator value for `NF_IP_PRI_LAST' not integer constant
testmodules.c:15: warning: `struct net_device' declared inside parameter list
testmodules.c:15: warning: its scope is only this definition or declaration, which is probably not what you want
testmodules.c:15: warning: `struct sk_buff' declared inside parameter
list
testmodules.c: In function `linuxmag_hook':
testmodules.c:17: dereferencing pointer to incomplete type
testmodules.c:17: dereferencing pointer to incomplete type
testmodules.c:18: dereferencing pointer to incomplete type
testmodules.c:19: dereferencing pointer to incomplete type
testmodules.c:21: warning: implicit declaration of function `prink'
testmodules.c:23: dereferencing pointer to incomplete type
testmodules.c: At top level:
testmodules.c:34: variable `linuxmag_ops' has initializer but incomplete type
testmodules.c:34: extra brace group at end of initializer
testmodules.c:34: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c: In function `init_module':
testmodules.c:39: warning: implicit declaration of function `nf_register_hook'
testmodules.c: In function `cleanup_module':
testmodules.c:43: warning: implicit declaration of function `nf_unregister_hook'
testmodules.c: At top level:
testmodules.c:34: storage size of `linuxmag_ops' isn't known
In file included from testmodules.c:9:
/usr/include/linux/netfilter_ipv4.h:53: `INT_MIN' undeclared here (not in a function)
/usr/include/linux/netfilter_ipv4.h:53: enumerator value for `NF_IP_PRI_FIRST' not integer constant
/usr/include/linux/netfilter_ipv4.h:59: `INT_MAX' undeclared here (not in a function)
/usr/include/linux/netfilter_ipv4.h:59: enumerator value for `NF_IP_PRI_LAST' not integer constant
testmodules.c:15: warning: `struct net_device' declared inside parameter list
testmodules.c:15: warning: its scope is only this definition or declaration, which is probably not what you want
testmodules.c:15: warning: `struct sk_buff' declared inside parameter
list
testmodules.c: In function `linuxmag_hook':
testmodules.c:17: dereferencing pointer to incomplete type
testmodules.c:17: dereferencing pointer to incomplete type
testmodules.c:18: dereferencing pointer to incomplete type
testmodules.c:19: dereferencing pointer to incomplete type
testmodules.c:21: warning: implicit declaration of function `prink'
testmodules.c:23: dereferencing pointer to incomplete type
testmodules.c: At top level:
testmodules.c:34: variable `linuxmag_ops' has initializer but incomplete type
testmodules.c:34: extra brace group at end of initializer
testmodules.c:34: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c:34: warning: excess elements in struct initializer
testmodules.c:34: warning: (near initialization for `linuxmag_ops')
testmodules.c: In function `init_module':
testmodules.c:39: warning: implicit declaration of function `nf_register_hook'
testmodules.c: In function `cleanup_module':
testmodules.c:43: warning: implicit declaration of function `nf_unregister_hook'
testmodules.c: At top level:
testmodules.c:34: storage size of `linuxmag_ops' isn't known
zeng_xiangyang 2003-09-08
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有没有搞错啊，错误都不贴出来怎么给你说啊
prqin 2003-09-08
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把错误信息贴出来
