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#include <sys/types.h>
#include <sys/socket.h>
int getsockopt(int sock, int level, int optname, void *optval, socklen_t *optlen);
int setsockopt(int sock, int level, int optname, const void *optval, socklen_t optlen);
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level£ºÑ¡ÏîËùÔÚµÄЭÒé²ã¡£
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EINVAL£ºÔÚµ÷ÓÃsetsockopt()ʱ£¬optlenÎÞЧ
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levelÖ¸¶¨¿ØÖÆÌ×½Ó×ֵIJã´Î.¿ÉÒÔÈ¡ÈýÖÖÖµ:
1)SOL_SOCKET:ͨÓÃÌ×½Ó×ÖÑ¡Ïî.
2)IPPROTO_IP:IPÑ¡Ïî.
3)IPPROTO_TCP:TCPÑ¡Ïî.¡¡
optnameÖ¸¶¨¿ØÖƵķ½Ê½(Ñ¡ÏîµÄÃû³Æ),ÎÒÃÇÏÂÃæÏêϸ½âÊÍ¡¡
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========================================================================
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SO_BROADCAST¡¡¡¡¡¡¡¡¡¡¡¡ÔÊÐí·¢Ë͹㲥Êý¾Ý¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡int
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SO_DONTROUTE¡¡¡¡¡¡¡¡¡¡¡¡²»²éÕÒ·ÓÉ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡int
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LinuxÏÂRamdisk¸ùÎļþÏµÍ³ÖÆ×÷¹ý³Ì½âÎö

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    #gunzip ramdisk.gz
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$ ls -la /lib/modules/`uname -r`/kernel/drivers/char/tpm
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drwxr-xr-x 2 root root 4096 02-03 21:47 .
drwxr-xr-x 7 root root 4096 02-03 21:47 ..
-rwxr--r-- 1 root root 9812 01-21 15:27 tp ......

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struct fs_struct *fs ;
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¡¾Nutch¡¿LinuxÏÂÓ¦ÓÃnutch 1.0 Webǰ¶ËʵÏÖµ¥»ú¼ìË÷

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http://apache.etoak.com/tomcat/tomcat-6/v6.0.18/bin/apache-tomcat-6.0.18.tar.gz
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2.1 °²×°jdk ......
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