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FDATASYNC
Section: Linux Programmer's Manual (2)Updated: 13 April 1996
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fdatasync - ¥Õ¥¡¥¤¥ë¤Î¥á¥â¥ê¾å¤Î¥Ç¡¼¥¿¤ò¥Ç¥£¥¹¥¯¾å¤Î¤â¤Î¤ÈƱ´ü¤µ¤»¤ë½ñ¼°
#include <unistd.h>#ifdef _POSIX_SYNCHRONIZED_IO
int fdatasync(int fd);
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fdatasync ¤Ï(¥·¥¹¥Æ¥à¡¦¥³¡¼¥ë¤«¤éÌá¤ëÁ°¤Ë)¥Õ¥¡¥¤¥ë¤ÎÁ´¤Æ¤Î¥Ç¡¼¥¿¡¦¥Ð¥Ã¥Õ¥¡¡¼¤ò ¥Ç¥£¥¹¥¯¤Ë¥Õ¥é¥Ã¥·¥å(flush)¤¹¤ë¡£¤³¤ì¤Ï fsync ¤Ë»÷¤Æ¤¤¤ë¤¬¡¢¥¢¥¯¥»¥¹»þ¹ï¤Î¤è¤¦¤Ê¥á¥¿¥Ç¡¼¥¿¤ò¹¹¿·¤·¤Ê¤¤¡£¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë¥¢¥¯¥»¥¹¤·¤¿¤ê¡¢¥í¥°¡¦¥Õ¥¡¥¤¥ë¤Ë½ñ¤¹þ¤à¤è¤¦¤Ê ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ï¤·¤Ð¤·¤Ð¾®¤µ¤Ê¥Ç¡¼¥¿¤ÎÃÇÊÒ(Î㤨¤Ð¥í¥°¡¦¥Õ¥¡¥¤¥ë¤Î°ì¹Ô) ¤ò½ñ¤¹þ¤ß¡¢¤½¤ì¤¬¥Ï¡¼¥É¥Ç¥£¥¹¥¯¤ËʪÍýŪ¤Ë³ÊǼ¤µ¤ì¤ë¤³¤È¤òÊݾڤ¹¤ë ¤¿¤á¤Ë¡¢¤¹¤°¤Ë fsync ¤ò¸Æ¤Ó½Ð¤¹¡£ÉÔ¹¬¤Ê¤³¤È¤Ë¡¢ fsync ¤Ï¾ï¤ËÆó²ó¤Î½ñ¤¹þ¤ßÁàºî¤ò¹Ô¤Ê¤¦: °ì¤Ä¤Ï¿·¤·¤¯½ñ¤¹þ¤Þ¤ì¤¿¥Ç¡¼¥¿¤ò¡¢ ¤â¤¦°ì¤Ä¤Ï inode ¤Î½¤Àµ»þ¹ï¤ò¹¹¿·¤¹¤ë¤¿¤á¤Ë¡£½¤Àµ»þ¹ï¤¬¥È¥é¥¶¥ó¥¯¥·¥ç¥ó ¤Ë´Ø·¸¤Ê¤±¤ì¤Ð¡¢ fdatasync ¤ò»ÈÍѤ¹¤ë¤³¤È¤ÇÉÔɬÍפʥǥ£¥¹¥¯¤Ø¤Î inode ¤Î½ñ¤¹þ¤ß½èÍý¤ò Èò¤±¤ë¤³¤È¤¬¤Ç¤¤ë¡£
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- EBADF
- fd ¤¬Í¸ú¤Ê½ñ¤¹þ¤ß¤Î¤¿¤á¤Ë¥ª¡¼¥×¥ó¤µ¤ì¤¿¥Õ¥¡¥¤¥ë¡¦¥Ç¥£¥¹¥¯¥ê¥×¥¿¡¼¤Ç¤Ê¤¤¡£
- EROFS, EINVAL
- fd ¤¬Æ±´üÁàºî¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤Ê¤¤Æüì¤Ê¥Õ¥¡¥¤¥ë¤ò»²¾È¤·¤Æ¤¤¤ë¡£
- EIO
- Ʊ´üÁàºî¤Î´Ö¤Ë¥¨¥é¡¼¤¬µ¯¤³¤Ã¤¿¡£
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POSIX1b (°ÊÁ°¤Î POSIX.4)´ØÏ¢¹àÌÜ
fsync(2), B.O. Gallmeister, POSIX.4, O'Reilly, pp. 220-223 and 343.