Linux Certif

Toute la documentation sur la certification Linux LPI

losetup

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losetup - loop ¥Ç¥Ð¥¤¥¹¤ÎÀßÄê¤ÈÀ©¸æ¤ò¹Ô¤¦

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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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-d

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-E encryption_type

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-e encryption_name

»ØÄꤵ¤ì¤¿Ì¾Á°¤Î¥Ç¡¼¥¿°Å¹æ²½µ¡Ç½¤òÍ­¸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

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/dev/loop0, /dev/loop1, ...   ¥ë¡¼¥×¥Ç¥Ð¥¤¥¹ (major=7)

Îã

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# 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¡¢

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# rmmod loop

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DES °Å¹æ²½¤ÏÈó¾ï¤ËÃÙ¤¤¡£°ìÊý XOR ¤ÏÈó¾ï¤Ë¼å¤¤¡£