Linux Certif

Toute la documentation sur la certification Linux LPI

quotactl

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quotactl - ¥Ç¥£¥¹¥¯ quota ¤òÁàºî¤¹¤ë

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#include <sys/types.h>




#include <sys/quota.h>



int quotactl(int cmd, const char *special, int id, caddr_t addr);

ÀâÌÀ

quota ¥·¥¹¥Æ¥à¤Ï¡¢³Æ¡¹¤Î¥æ¡¼¥¶µÚ¤Ó/¤Þ¤¿¤Ï¥°¥ë¡¼¥×¤ËÂФ·¤Æ¡¢ ¥½¥Õ¥È¡¦¥ê¥ß¥Ã¥ÈµÚ¤Ó¥Ï¡¼¥É¡¦¥ê¥ß¥Ã¥È¤òÄê¤á¤ë¡£¤³¤ì¤Ï¤¢¤ë¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤Ç »ÈÍѤ¹¤ë»ö¤¬½ÐÍè¤ë¥Ç¥£¥¹¥¯ÍÆÎ̤òÀ©¸Â¤¹¤ë¡£ ¥Ï¡¼¥É¡¦¥ê¥ß¥Ã¥È¤ÏĶ²á¤¹¤ë¤³¤È¤Ï½ÐÍè¤Ê¤¤¡£ ¥½¥Õ¥È¡¦¥ê¥ß¥Ã¥È¤ÏĶ²á¤¹¤ë»ö¤¬½ÐÍè¤ë¤¬¡¢·Ù¹ð¤¬È¯¤»¤é¤ì¤ë¡£ ¹¹¤Ë¡¢(¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï) °ì½µ´Ö°Ê¾å¥½¥Õ¥È¡¦¥ê¥ß¥Ã¥È¤òĶ²á¤·¤¿¤Þ¤Þ¤Ë ¤·¤Æ¤ª¤¯»ö¤Ï¤Ç¤­¤Ê¤¤: °ì½µ´Ö·Ð²á¤·¤¿¸å¤Ï¥Ï¡¼¥É¡¦¥ê¥ß¥Ã¥È¤òĶ²á¤·¤¿¤È ¤ß¤Ê¤µ¤ì¤ë¡£

quotactl() ¥·¥¹¥Æ¥à¥³¡¼¥ë¤Ï¤³¤ì¤é¤Î quota ¤ËÂФ¹¤ëÁàºî¤ò¹Ô¤Ê¤¦¡£ ºÇ½é¤Î°ú¤­¿ô¤Ï QCMD(subcmd,type) ¤È¤¤¤¦·Á¼°¤Ç¤¢¤ë¡£ type ¤Ë¤Ï¡¢¥æ¡¼¥¶¡¼ quota ¤Ë¤Ä¤¤¤Æ¤Ï USRQUOTA ¤ò¡¢¥°¥ë¡¼¥× quota ¤Ë¤Ä¤¤¤Æ¤Ï GRPQUOTA ¤ò»ØÄꤹ¤ë¡£ subcmd ¤Ï°Ê²¼¤ÇÀâÌÀ¤¹¤ë¡£

ÆóÈÖÌܤΰú¤­¿ô special ¤Ï quota ¤òŬÍѤ¹¤ë¥Ç¥Ð¥¤¥¹¤Î¥Ö¥í¥Ã¥¯¡¦¥¹¥Ú¥·¥ã¥ë¡¦¥Õ¥¡¥¤¥ë¤Ç¤¢¤ë¡£ ¤½¤Î¥Ç¥Ð¥¤¥¹¤Ï¥Þ¥¦¥ó¥È¤µ¤ì¤Æ¤¤¤Ê¤¯¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£

»°ÈÖÌܤΰú¤­¿ô id ¤Ë¤Ï¡¢(ɬÍפʾì¹ç¤Ë) quota ¤òŬÍѤ¹¤ë¥æ¡¼¥¶¡¼¤â¤·¤¯¤Ï¥°¥ë¡¼¥×¤Î ID ¤ò»ØÄꤹ¤ë¡£

»ÍÈÖÌܤΰú¤­¿ô addr ¤Ë¤Ï¡¢¥³¥Þ¥ó¥É¤´¤È¤Ë°Û¤Ã¤¿¥Ç¡¼¥¿¹½Â¤ÂΤΥ¢¥É¥ì¥¹¤ò»ØÄꤹ¤ë¡£

subcmd ¤Ï°Ê²¼¤Î¤¤¤º¤ì¤«¤Ç¤¢¤ë

Q_QUOTAON

quota ¤òÍ­¸ú¤Ë¤¹¤ë¡£ addr °ú¤­¿ô¤Ë¤Ï¡¢¤½¤Î¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤Î quota ¤¬µ­Ï¿¤µ¤ì¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤Î ¥Ñ¥¹Ì¾¤ò»ØÄꤹ¤ë¡£

Q_QUOTAOFF

quota ¤ò̵¸ú¤Ë¤¹¤ë¡£

Q_GETQUOTA

¥Ç¥£¥¹¥¯»ÈÍÑÎ̤ÎÀ©¸ÂÃͤȸ½ºß¤Î»ÈÍÑÎ̤òÆÀ¤ë¡£ addr °ú¤­¿ô¤Ï (<sys/quota.h> ¤ÇÄêµÁ¤µ¤ì¤¿) dqblk ¹½Â¤ÂΤò»Ø¤¹¥Ý¥¤¥ó¥¿¤Ç¤¢¤ë¡£

Q_SETQUOTA

À©¸ÂÃͤȸ½ºß¤Î»ÈÍÑÎ̤òÀßÄꤹ¤ë: addr ¤ÏƱ¾å¡£

Q_SETQLIM

À©¸ÂÃͤòÀßÄꤹ¤ë; addr ¤ÏƱ¾å¡£

Q_SETUSE

»ÈÍÑÎ̤òÀßÄꤹ¤ë¡£

Q_SYNC

¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤Î quota ¥Õ¥¡¥¤¥ë¤ò¥Ç¥£¥¹¥¯¤ÈƱ´ü¤µ¤»¤ë¡£

Q_GETSTATS

¼ý½¸¤µ¤ì¤¿Åý·×¤ò¼èÆÀ¤¹¤ë¡£

ÊÖ¤êÃÍ

quotactl() ¤Ï¡¢À®¸ù»þ¤Ë¤Ï 0 ¤òÊÖ¤¹¡£¥¨¥é¡¼»þ¤Ï¡¢-1 ¤òÊÖ¤¹¤È¤È¤â¤Ë¡¢ errno ¤¬Å¬ÀÚ¤ÊÃͤËÀßÄꤵ¤ì¤ë¡£

¥¨¥é¡¼

EACCES

quota ¥Õ¥¡¥¤¥ë¤¬ÉáÄ̤Υե¡¥¤¥ë¤Ç¤Ï¤Ê¤¤¡£

EBUSY

Q_QUOTAON ¤ÎÍ׵᤬¤Ê¤µ¤ì¤¿¤¬¡¢quota(s) ¤Ï´û¤ËÍ­¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤ë¡£

EFAULT

addr ¤ÎÃͤ˸í¤ê¤¬¤¢¤ë¡£

EINVAL

type ¤¬´ûÃΤΠquota ¤Î·Á¼°¤Ç¤Ï¤Ê¤¤¡£¤â¤·¤¯¤Ï¡¢ special ¥Ç¥Ð¥¤¥¹¤¬¸«ÉÕ¤«¤é¤Ê¤«¤Ã¤¿¡£

EIO

quota ¥Õ¥¡¥¤¥ë¤Ø¤ÎÆɤ߽ñ¤­¤¬½ÐÍè¤Ê¤¤¡£

EMFILE

¥Õ¥¡¥¤¥ë¤ò¥ª¡¼¥×¥ó¤·¤¹¤®¤Æ¤¤¤ë: quota ¥Õ¥¡¥¤¥ë¤ò¥ª¡¼¥×¥ó½ÐÍè¤Ê¤¤¡£

ENODEV

special ¤¬¥Þ¥¦¥ó¥È¡¦¥Æ¡¼¥Ö¥ëÆâ¤Ë¸«Åö¤¿¤é¤Ê¤¤¡£

ENOPKG

quota ¤ò»ÈÍѲĤˤ·¤Æ¥«¡¼¥Í¥ë¤ò¥³¥ó¥Ñ¥¤¥ë¤·¤Æ¤¤¤Ê¤¤¡£

ENOTBLK

special ¤¬¥Ö¥í¥Ã¥¯¡¦¥¹¥Ú¥·¥ã¥ë¡¦¥Ç¥Ð¥¤¥¹¤Ç¤Ï¤Ê¤¤¡£

EPERM

¥×¥í¥»¥¹¤¬ (¤½¤Î¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤Î) root ¤Î¤â¤Î¤Ç¤Ï¤Ê¤¯¡¢ ¤«¤Ä¥×¥í¥»¥¹¼«¿È¤Î¤â¤Î¤È¤Ï°Û¤Ê¤ë id ¤ËÂФ·¤Æ Q_GETQUOTA Í×µá¤ò¹Ô¤Ê¤Ã¤¿¡£ ¤â¤·¤¯¤Ï¡¢ Q_GETSTATS, Q_SYNC °Ê³°¤ÎÍ׵᤬¤Ê¤µ¤ì¤¿¡£

ESRCH

quota ¤¬Í­¸ú¤Ë¤Ê¤Ã¤Æ¤¤¤Ê¤¤¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤ËÂФ·¤Æ Q_GETQUOTA, Q_SETQUOTA, Q_SETUSE, Q_SETQLIM ¤Î¤¤¤º¤ì¤«¤ÎÍ׵᤬¤Ê¤µ¤ì¤¿¡£

½àµò

BSD

´ØÏ¢¹àÌÜ

quota(1), getrlimit(2), setrlimit(2), ulimit(3), quotacheck(8), quotaon(8)