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losetup
Langue: ja
Version: 2003-07-01 (openSuse - 09/10/07)
Section: 8 (Commandes administrateur)
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losetup - loop ¥Ç¥Ð¥¤¥¹¤ÎÀßÄê¤ÈÀ©¸æ¤ò¹Ô¤¦½ñ¼°
¾ðÊó¤ò¼èÆÀ¤¹¤ë:losetup loop_device
loop ¤òºï½ü¤¹¤ë:
losetup -d loop_device
»ÈÍѤµ¤ì¤Æ¤¤¤Ê¤¤ºÇ½é loop ¥Ç¥Ð¥¤¥¹¤Î̾Á°¤òɽ¼¨¤¹¤ë:
losetup -f
loop ¥Ç¥Ð¥¤¥¹¤òÀßÄꤹ¤ë:
losetup [{-e|-E} encryption] [-o offset] [-p pfd] {-f|loop_device} file
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-E ¤Þ¤¿¤Ï -e ¥ª¥×¥·¥ç¥ó¤Î¤¤¤º¤ì¤« 1 ¤Ä¤Ë¤è¤ê¡¢ (°Å¹æ²½¡¦Éü¹æ²½¤ä¤½¤Î¾¤ÎÌÜŪ¤Ç»È¤¦) ÊÑ´¹´Ø¿ô¤ò»ØÄꤹ¤ë¤³¤È¤¬¤Ç¤¤ë¡£ »È¤¤¤¿¤¤°Å¹æ²½µ¡Ç½¤ò»ØÄꤹ¤ë 2 ¤Ä¤Î»ÅÁȤߤ¬¤¢¤ë¡£ ÈÖ¹æ¤Ç»ØÄꤹ¤ëÊýË¡¤È̾Á°¤Ç»ØÄꤹ¤ëÊýË¡¤Ç¤¢¤ë¡£ °Å¹æ²½µ¡Ç½¤òÈÖ¹æ¤Ç»ØÄꤹ¤ë¾ì¹ç¡¢ Linux ¥«¡¼¥Í¥ë¤¬¤½¤ÎÈÖ¹æ¤Î°Å¹æ²½µ¡Ç½¤òÃΤäƤ¤¤ë¤³¤È¤ò ³Îǧ¤·¤Æ¤ª¤«¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ ¤³¤Î°Å¹æ²½µ¡Ç½¤Ï¡¢¤¿¤Ö¤ó¥«¡¼¥Í¥ë¤Ø¤Î¥Ñ¥Ã¥Á¤ÇÄ󶡤µ¤ì¤ë¡£ ¾ï¤ËÄ󶡤µ¤ì¤Æ¤¤¤ëɸ½àŪ¤ÊÈÖ¹æ¤Ï¡¢ 0 (°Å¹æ²½¤Ê¤·) ¤È 1 (XOR °Å¹æ²½) ¤Ç¤¢¤ë¡£ cryptoloop ¥â¥¸¥å¡¼¥ë¤¬¥í¡¼¥É¤µ¤ì¤ë¤È (¤Þ¤¿¤ÏÁȤ߹þ¤Þ¤ì¤Æ¤¤¤ë¤È)¡¢ ¤³¤Î¥â¥¸¥å¡¼¥ë¤ÏÈÖ¹æ 18 ¤ò»È¤¦¡£ cryptoloop ¤ÏǤ°Õ¤Î°Å¹æ²½¥¿¥¤¥×¤Î̾Á°¤ò¼õ¤±¼è¤ê¡¢ ¤½¤Î°Å¹æ²½¤ò¼Â¹Ô²Äǽ¤Ê¥â¥¸¥å¡¼¥ë¤òõ¤¹¡£ (¤è¤Ã¤Æ¡¢¥æ¡¼¥¶¤Ï -E ¥ª¥×¥·¥ç¥ó¤Ç 18 °Ê³°¤ÎÈÖ¹æ¤ò»ØÄꤹ¤ë¤«¡¢ -e ¥ª¥×¥·¥ç¥ó¤Ç̾Á°¤ò»ØÄꤹ¤ì¤Ð¤è¤¤¡£)¥ª¥×¥·¥ç¥ó
- -d
- »ØÄꤷ¤¿ loop ¥Ç¥Ð¥¤¥¹¤òÂбþ¤¹¤ë¥Õ¥¡¥¤¥ë¤ä¥Ç¥Ð¥¤¥¹¤«¤éÀÚ¤êÊü¤¹¡£
- -E encryption_type
- »ØÄꤵ¤ì¤¿ÈÖ¹æ¤Î¥Ç¡¼¥¿°Å¹æ²½µ¡Ç½¤ò͸ú¤Ë¤¹¤ë¡£
- -e encryption_name
- »ØÄꤵ¤ì¤¿Ì¾Á°¤Î¥Ç¡¼¥¿°Å¹æ²½µ¡Ç½¤ò͸ú¤Ë¤¹¤ë¡£
- -f
- »ÈÍѤµ¤ì¤Æ¤¤¤Ê¤¤ºÇ½é¤Î loop ¥Ç¥Ð¥¤¥¹¤ò¸«¤Ä¤±¤ë¡£ file °ú¤¿ô¤¬»ØÄꤵ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ï¡¢¤½¤Î¥Ç¥Ð¥¤¥¹¤ò»ÈÍѤ¹¤ë¡£ »ØÄꤵ¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¤Ï¡¢loop ¥Ç¥Ð¥¤¥¹¤Î̾Á°¤òɽ¼¨¤¹¤ë¡£
- -o offset
- ¥Ç¡¼¥¿¤Î³«»ÏÃÏÅÀ¤ò»ØÄꤷ¤¿¥Õ¥¡¥¤¥ë¤ä¥Ç¥Ð¥¤¥¹¤Î offset ¥Ð¥¤¥È¤Ë°ÜÆ°¤¹¤ë¡£
- -p num
- ¥Ñ¥¹¥Õ¥ì¡¼¥º¤òüËö¤«¤é¤Ç¤Ï¤Ê¤¯¡¢ÈÖ¹æ num ¤Î¥Õ¥¡¥¤¥ë¥Ç¥£¥¹¥¯¥ê¥×¥¿¤«¤éÆɤ߹þ¤à¡£
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losetup ¤ÏÀ®¸ù¤¹¤ë¤È 0 ¤òÊÖ¤·¡¢¼ºÇÔ¤¹¤ë¤È 0 °Ê³°¤òÊÖ¤¹¡£ losetup ¤Ë loop ¥Ç¥Ð¥¤¥¹¤Î¾õÂÖ¤òɽ¼¨¤µ¤»¤ë¾ì¹ç¤Ï¡¢ ¥Ç¥Ð¥¤¥¹¤¬ÀßÄꤵ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð 1 ¤ò¡¢ ¥Ç¥Ð¥¤¥¹¤Î¾õÂÖ¤ò·èÄê¤Ç¤¤Ê¤¯¤¹¤ë¤è¤¦¤Ê¥¨¥é¡¼¤¬µ¯¤Ã¤¿¾ì¹ç¤Ï 2 ¤òÊÖ¤¹¡£¥Õ¥¡¥¤¥ë
/dev/loop0, /dev/loop1, ... ¥ë¡¼¥×¥Ç¥Ð¥¤¥¹ (major=7)
Îã
¥í¡¼¥À¥Ö¥ë¥â¥¸¥å¡¼¥ë¤òÍѤ¤¤Æ¤¤¤ë¾ì¹ç¤Ï¡¢ ¤Þ¤º°Ê²¼¤Î¥³¥Þ¥ó¥É¤Ë¤è¤Ã¤Æ¥â¥¸¥å¡¼¥ë¤ò¥í¡¼¥É¤¹¤ëɬÍפ¬¤¢¤ë¡£- # insmod loop.o
°Å¹æ²½¥â¥¸¥å¡¼¥ë¤âɬÍפ«¤âÃΤì¤Ê¤¤¡£
- # insmod des.o # insmod cryptoloop.o
°Ê²¼¤Î°ìÏ¢¤Î¥³¥Þ¥ó¥É¤Ï loop ¥Ç¥Ð¥¤¥¹¤Î»ÈÍÑÎã¤Ç¤¢¤ë¡£
- # dd if=/dev/zero of=/file bs=1k count=100 # losetup -e des /dev/loop0 /file Password: Init (up to 16 hex digits): # mkfs -t ext2 /dev/loop0 100 # mount -t ext2 /dev/loop0 /mnt ... # umount /dev/loop0 # losetup -d /dev/loop0
¥í¡¼¥À¥Ö¥ë¥â¥¸¥å¡¼¥ë¤òÍѤ¤¤Æ¤¤¤ë¾ì¹ç¤Ï¡¢ °Ê²¼¤Î¥³¥Þ¥ó¥É¤Ë¤è¤Ã¤Æ¥â¥¸¥å¡¼¥ë¤òºï½ü¤¹¤ë¤³¤È¤¬¤Ç¤¤ë¡£
- # rmmod loop
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DES °Å¹æ²½¤ÏÈó¾ï¤ËÃÙ¤¤¡£°ìÊý XOR ¤ÏÈó¾ï¤Ë¼å¤¤¡£
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