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IOPERM

Section: Linux Programmer's Manual (2)
Updated: January 21, 1993
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ioperm - ¥Ý¡¼¥È¤ÎÆþ½ÐÎϵö²Ä¤òÀßÄꤹ¤ë  

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#include <unistd.h> /* for libc5 */
#include <sys/io.h> /* for glibc */

int ioperm(unsigned long from, unsigned long num, int turn_on);  

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ioperm ¤Ï°ú¤­¿ô from ¤Î I/O ¥Ý¡¼¥È¥¢¥É¥ì¥¹¤«¤é num ¥Ð¥¤¥Èʬ¤ÎÎΰè¤ËÂФ¹¤ë¤³¤Î¥×¥í¥»¥¹¤Î¥¢¥¯¥»¥¹µö²Ä¥Ó¥Ã¥È¤ò turn_on ¤ËÀßÄꤹ¤ë¡£ ioperm ¤Î»ÈÍѤˤϥ¹¡¼¥Ñ¥æ¡¼¥¶¡¼¸¢¸Â¤¬É¬ÍפǤ¢¤ë¡£

¤³¤ÎÊýË¡¤ÇÀßÄê¤Ç¤­¤ë¤Î¤Ï 0x3ff ÈÖÃϤޤǤΠI/O¥Ý¡¼¥È¤Ë¸Â¤é¤ì¤ë¡£ ¤³¤ì¤è¤ê¤âÂ礭¤Ê¥¢¥É¥ì¥¹¤Î¥Ý¡¼¥È¤ËÂФ·¤Æ¤Ï iopl ´Ø¿ô¤ò»È¤ï¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ fork ¤·¤¿¾ì¹ç¤Ï¥¢¥¯¥»¥¹¸¢¤Ï·Ñ¾µ¤µ¤ì¤Ê¤¤¤¬¡¢exec ¤Î¾ì¹ç¤Ï·Ñ¾µ¤µ¤ì¤ë¡£ ¤³¤ì¤Ï¥¹¡¼¥Ñ¥æ¡¼¥¶¡¼¸¢¸Â¤ò»ý¤¿¤Ê¤¤¥×¥í¥»¥¹¤Ë¥Ý¡¼¥È¤Ø¤Î¥¢¥¯¥»¥¹¸¢¤ò Í¿¤¨¤ë¤Î¤Ë»ÈÍѤǤ­¤ë¡£

 

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À®¸ù¤·¤¿¾ì¹ç¤Ë¤Ï 0 ¤òÊÖ¤¹¡£¥¨¥é¡¼¤Î¾ì¹ç¤Ë -1 ¤òÊÖ¤·¡¢ errno ¤ËŬÀÚ¤ÊÃͤòÀßÄꤹ¤ë¡£  

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ioperm ¤Ï Linux ÆÃÍ­¤Î´Ø¿ô¤Ç¤¢¤ê¡¢°Ü¿¢¤ò°Õ¿Þ¤·¤¿¥×¥í¥°¥é¥à¤Ç »ÈÍѤ·¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£  

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libc5 ¤Ç¤Ï¥·¥¹¥Æ¥à¥³¡¼¥ë¤È¤·¤Æ°·¤¤ <unistd.h> ¤Ë¥×¥í¥È¥¿¥¤¥×¤¬Â¸ºß¤·¤Æ¤¤¤ë¡£ Glibc1 ¤Ë¤Ï¥×¥í¥È¥¿¥¤¥×¤Ï¸ºß¤·¤Ê¤¤¡£ Glibc2 ¤Ï <sys/io.h> ¤È <sys/perm.h> ¤ÎξÊý¤Ë¥×¥í¥È¥¿¥¤¥×¤ò»ý¤Ã¤Æ¤¤¤ë¡£ ¸å¼Ô¤Ï i386 ¤Î¤ß¤ÇÍøÍѲÄǽ¤Ê¤Î¤Ç¡¢»ÈÍѤ¹¤Ù¤­¤Ç¤Ï¤Ê¤¤¡£  

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iopl(2)


 

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