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lockf
Langue: ja
Version: 2002-04-22 (openSuse - 09/10/07)
Section: 3 (Bibliothèques de fonctions)
̾Á°
lockf - ³«¤¤¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤ËÂФ·¤Æ POSIX ¥í¥Ã¥¯¤òŬÍÑ¡¦¥Æ¥¹¥È¡¦²ò½ü¤¹¤ë¡£½ñ¼°
#include <unistd.h>int lockf(int fd, int cmd, off_t len);
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- F_LOCK
- ¥Õ¥¡¥¤¥ë¤Î»ØÄꤵ¤ì¤¿¥»¥¯¥·¥ç¥ó¤ËÇÓ¾¥í¥Ã¥¯¤òÀßÄꤹ¤ë¡£ ¤½¤Î¥»¥¯¥·¥ç¥ó (¤Î°ìÉô) ¤¬´û¤Ë¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤¿¾ì¹ç¡¢ Á°¤Î¥í¥Ã¥¯¤¬²ò½ü¤µ¤ì¤ë¤Þ¤Ç´Ø¿ô¤Î¸Æ¤Ó½Ð¤·¤¬¥Ö¥í¥Ã¥¯¤µ¤ì¤ë¡£ ¤³¤Î¥»¥¯¥·¥ç¥ó¤¬Á°¤Ë¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤ë¥»¥¯¥·¥ç¥ó¤È½Å¤Ê¤Ã¤¿¾ì¹ç¡¢ 2 ¤Ä¤Î¥»¥¯¥·¥ç¥ó¤Ï·ë¹ç¤µ¤ì¤ë¡£ ¥í¥Ã¥¯¤òÊÝ»ý¤·¤Æ¤¤¤ë¥×¥í¥»¥¹¤¬¡¢ ¤½¤Î¥Õ¥¡¥¤¥ë¤Î¥Õ¥¡¥¤¥ë¥Ç¥£¥¹¥¯¥ê¥×¥¿¤ò¥¯¥í¡¼¥º¤¹¤ë¤È¡¢ ¥Õ¥¡¥¤¥ë¥í¥Ã¥¯¤Ï²òÊü¤µ¤ì¤ë¡£ »Ò¥×¥í¥»¥¹¤Ï¥í¥Ã¥¯¤ò·Ñ¾µ¤·¤Ê¤¤¡£
- F_TLOCK
- F_LOCK ¤ÈƱÍͤǤ¢¤ë¤¬¡¢¥Õ¥¡¥¤¥ë¤¬´û¤Ë¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¡¢ ´Ø¿ô¤Î¸Æ¤Ó½Ð¤·¤Ï¥Ö¥í¥Ã¥¯¤ò¹Ô¤ï¤º¤Ë¥¨¥é¡¼¤òÊÖ¤¹¡£
- F_ULOCK
- ¥Õ¥¡¥¤¥ë¤Î»ØÄꤵ¤ì¤¿¥»¥¯¥·¥ç¥ó¤Î¥í¥Ã¥¯¤ò²ò½ü¤¹¤ë¡£ ¤³¤ì¤Ë¤è¤ê¥í¥Ã¥¯¤µ¤ì¤¿¥»¥¯¥·¥ç¥ó¤¬ 2 ¤Ä¤Ëʬ³ä¤µ¤ì¤ë¤«¤â¤·¤ì¤Ê¤¤¡£
- F_TEST
- ¼¡¤Î¤è¤¦¤Ë¥í¥Ã¥¯¤Î¥Æ¥¹¥È¤ò¤¹¤ë¡£ »ØÄꤵ¤ì¤¿¥»¥¯¥·¥ç¥ó¤¬¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤Ê¤¤¤«¡¢ ¤³¤Î¥×¥í¥»¥¹¤Ë¤è¤ê¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¡¢0 ¤òÊÖ¤¹¡£ ¾¤Î¥×¥í¥»¥¹¤¬¥í¥Ã¥¯¤òÊÝ»ý¤·¤Æ¤¤¤ë¾ì¹ç¡¢-1 ¤òÊÖ¤·¡¢ errno ¤ò EAGAIN (¤¤¤¯¤Ä¤«¤Î¾¤Î¥·¥¹¥Æ¥à¤Ç¤Ï EACCES) ¤ËÀßÄꤹ¤ë¡£
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- EACCES ¤â¤·¤¯¤Ï EAGAIN
- ¥Õ¥¡¥¤¥ë¤¬¥í¥Ã¥¯¤µ¤ì¤Æ¡¢ F_TLOCK ¤Þ¤¿¤Ï F_TEST ¥Õ¥é¥°¤¬ÁªÂò¤µ¤ì¤Æ¤¤¤ë¡£ ¤Þ¤¿¤Ï¡¢¥Õ¥¡¥¤¥ë¤¬Â¾¤Î¥×¥í¥»¥¹¤Ë¤è¤ê¥á¥â¥ê¡¼¥Þ¥Ã¥×¤µ¤ì¤Æ¤¤¤ë¤¿¤á¤Ë¡¢ Áàºî¤¬¶Ø»ß¤µ¤ì¤Æ¤¤¤ë¡£
- EBADF
- fd ¤¬³«¤¤¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¤Î¥Ç¥£¥¹¥¯¥ê¥×¥¿¤Ç¤Ï¤Ê¤¤¡£
- EDEADLK
- ¥³¥Þ¥ó¥É¤¬ T_LOCK ¤Ç¤¢¤ê¡¢¤³¤Î¥í¥Ã¥¯Áàºî¤¬¥Ç¥Ã¥É¥í¥Ã¥¯¤ò°ú¤µ¯¤³¤·¤Æ¤¤¤ë¡£
- EINVAL
- fd ¤Ë̵¸ú¤ÊÁàºî¤¬»ØÄꤵ¤ì¤¿¡£
- ENOLCK
- Èó¾ï¤Ë¿¤¯¤Î¥»¥°¥á¥ó¥È¥í¥Ã¥¯¤¬³«¤«¤ì¡¢¥í¥Ã¥¯¥Æ¡¼¥Ö¥ë¤¬°î¤ì¤¿¡£
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