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Section: Linux Programmer's Manual (2)Updated: 10 December 1997
Index Return to Main Contents
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link - ¥Õ¥¡¥¤¥ë¤Î¿·¤·¤¤Ì¾Á°¤òºîÀ®¤¹¤ë½ñ¼°
#include <unistd.h>int link(const char *oldpath, const char *newpath);
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link ¤Ï¸ºß¤¹¤ë¥Õ¥¡¥¤¥ë¤Ø¤Î¿·¤·¤¤¥ê¥ó¥¯(link)(¥Ï¡¼¥É¡¦¥ê¥ó¥¯(hard link)¤È ¤â¤¤¤¦)¤òºîÀ®¤¹¤ë¡£newpath ¤¬Â¸ºß¤¹¤ë¾ì¹ç¤Ë¤Ï¾å½ñ¤¤Ï¤µ¤ì ¤Ê¤¤¡£
¤³¤Î¿·¤·¤¤Ì¾Á°¤ÏÁ´¤Æ¤ÎÁàºî¤Ë¤ª¤¤¤Æ¸Å¤¤Ì¾Á°¤È´°Á´¤ËƱ¤¸¤è¤¦¤Ë»ÈÍѤµ¤ì¤ë; ξÊý¤Î̾Á°¤ÏƱ¤¸¥Õ¥¡¥¤¥ë¤ò»²¾È¤·¤Æ¤ª¤ê(¤½¤ì¤ÇƱ¤¸¡¢µö²Ä(permission)¤ä ½êͼÔ(ownership)¤È¤Ê¤ë)¡¢¤É¤Á¤é¤Î̾Á°¤¬¡ÖËÜÍè¡×¤Î¤â¤Î¤Ç¤¢¤ë¤«È½Ê̤Ǥ¤Ê¤¤¡£
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À®¸ù¤·¤¿¾ì¹ç¤Ï¥¼¥í¤¬ÊÖ¤µ¤ì¤ë¡£¥¨¥é¡¼¤Î¾ì¹ç¤Ï -1 ¤¬ÊÖ¤µ¤ì¡¢ errno ¤¬Å¬ÀÚ¤ËÀßÄꤵ¤ì¤ë¡£¥¨¥é¡¼
- EXDEV
- oldpath ¤È newpath ¤¬Æ±¤¸¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤Ë¸ºß¤·¤Ê¤¤¡£
- EPERM
- oldpath ¤È newpath ¤ò´Þ¤ó¤Ç¤¤¤ë¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤¬¥Ï¡¼¥É¡¦¥ê¥ó¥¯¤ò¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤Ê¤¤¡£
- EFAULT
- oldpath ¤Þ¤¿¤Ï newpath ¤¬¥¢¥¯¥»¥¹²Äǽ¤Ê¥¢¥É¥ì¥¹¶õ´Ö¤Î³°¤ò»Ø¤·¤Æ¤¤¤ë¡£
- EACCES
- ¥×¥í¥»¥¹¤Î¼Â¸ú(effective)¥æ¡¼¥¶¡¼ID ¤Ë newpath ¤ò´Þ¤ó¤Ç¤¤¤ë¥Ç¥£¥ì¥¯¥È¥ê¤Ø¤Î½ñ¤¹þ¤ß¤¬µö¤µ¤ì¤Æ¤¤¤Ê¤¤¤«¡¢ oldpath ¤Þ¤¿¤Ï newpath ¤Ø¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Î¤É¤ì¤«¤Ë¸¡º÷(¼Â¹Ô)µö²Ä¤¬¤Ê¤¤¡£
- ENAMETOOLONG
- oldpath ¤Þ¤¿¤Ï newpath ¤¬Ä¹²á¤®¤ë¡£
- ENOENT
- oldpath ¤Þ¤¿¤Ï newpath ¤Î¥Ç¥£¥ì¥¯¥È¥êÉôʬ¤¬Â¸ºß¤·¤Ê¤¤¤«¡¢ ²õ¤ì¤¿(dangling)¥·¥ó¥Ü¥ê¥Ã¥¯¡¦¥ê¥ó¥¯¤Ç¤¢¤ë¡£
- ENOTDIR
- oldpath ¤Þ¤¿¤Ï newpath ¤Î¥Ç¥£¥ì¥¯¥È¥êÉôʬ¤¬¡¢¼ÂºÝ¤Ë¤Ï¡¢¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤Ê¤¤¡£
- ENOMEM
- ¥«¡¼¥Í¥ë¤Ë½½Ê¬¤Ê¥Ç¥£¥ì¥¯¥È¥ê¤¬¤Ê¤¤¡£
- EROFS
- ¥Õ¥¡¥¤¥ë¤¬Æɤ߹þ¤ßÀìÍѤΥե¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤Ë¸ºß¤¹¤ë¡£
- EEXIST
- newpath ¤¬´û¤Ë¸ºß¤¹¤ë¡£
- EMLINK
- oldpath ¤Ë¤è¤Ã¤Æ»²¾È¤µ¤ì¤ë¥Õ¥¡¥¤¥ë¤Ï ´û¤ËºÇÂç¿ô¤Þ¤Ç¤Î¥ê¥ó¥¯¤ò»ý¤Ã¤Æ¤¤¤ë¡£
- ELOOP
- oldpath ¤Þ¤¿¤Ï newpath ¤ò²ò·è¤¹¤ëºÝ¤ËÁø¶ø¤·¤¿¥·¥ó¥Ü¥ê¥Ã¥¯¡¦¥ê¥ó¥¯¤¬Â¿²á¤®¤ë¡£
- ENOSPC
- ¤½¤Î¥Õ¥¡¥¤¥ë¤ò´Þ¤ó¤Ç¤¤¤ë¥Ç¥Ð¥¤¥ë¤Ë¿·¤·¤¤¥Ç¥£¥ì¥¯¥È¥ê¡¦¥¨¥ó¥È¥ê¤ò ºîÀ®¤¹¤ë¤¿¤á¤Î¶õ¤¤¬¤Ê¤¤¡£
- EPERM
- oldpath ¤¬¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤¢¤ë¡£ EIO I/O ¥¨¥é¡¼¤¬È¯À¸¤·¤¿¡£
Ãí°Õ
link ¤Ç¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à¤òĶ¤¨¤Æ¥Ï¡¼¥É¡¦¥ê¥ó¥¯¤òºîÀ®¤¹¤ë¤³¤È¤Ï¤Ç¤¤Ê¤¤¡£ ¤³¤Î¤è¤¦¤Ê¾ì¹ç¤Ï symlink ¤ò»ÈÍѤ¹¤ë¤³¤È¡£½àµò
SVr4, SVID, POSIX, BSD 4.3, X/OPEN. SVr4 ¤Ï¾¤Ë ENOLINK, EMULTIHOP ¥¨¥é¡¼¾õÂ֤ˤĤ¤¤Æ¤âµ½Ò¤·¤Æ¤¤¤ë¡£POSIX.1 ¤Ë¤Ï ELOOP ¤Ë¤Ä¤¤¤Æ¤Îµ½Ò¤Ï¤Ê¤¤¡£ X/OPEN ¤Ë¤Ï EFAULT, ENOMEM, EIO ¤Ë¤Ä¤¤¤Æ¤Îµ½Ò¤Ï¤Ê¤¤¡£¥Ð¥°
NFS ¥Õ¥¡¥¤¥ë¡¦¥·¥¹¥Æ¥à ¤Ç¤Ï¡¢NFS ¥µ¡¼¥Ð¡¼¤¬¥ê¥ó¥¯¤òºîÀ®¤·¤¿¸å¤Ë¡¢ ¤½¤ì¤òÅÁ¤¨¤ëÁ°¤Ë»à¤ó¤À¾ì¹ç¤Ë¤ÏÊÖ¤êÃͤ¬ÉÔÀµ¤Ê¾ì¹ç¤¬¤¢¤ë¡£ ¥ê¥ó¥¯¤¬ºîÀ®¤Ç¤¤¿¤«¤É¤¦¤«¸«¤Ä¤±¤ë¤¿¤á¤Ë¤Ï stat(2) ¤ò»ÈÍѤ¹¤ë¤³¤È¡£´ØÏ¢¹àÌÜ
symlink(2), unlink(2), rename(2), open(2), stat(2), ln(1)