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fpathconf

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fpathconf, pathconf - ¥Õ¥¡¥¤¥ë¤ÎÀßÄêÃͤò¼èÆÀ¤¹¤ë

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#include <unistd.h>



long fpathconf(int filedes, int name);




long pathconf(char *path, int name);

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fpathconf() ¤Ï¥ª¡¼¥×¥ó¤µ¤ì¤Æ¤¤¤ë¥Õ¥¡¥¤¥ë¥Ç¥¹¥¯¥ê¥×¥¿¡¼ filedes ¤ËÂФ·¤ÆÀßÄꤵ¤ì¤Æ¤¤¤ë¥ª¥×¥·¥ç¥ó name ¤ÎÃͤò¼èÆÀ¤¹¤ë¡£

pathconf() ¤Ï¥Õ¥¡¥¤¥ë̾ path ¤ËÂФ·¤ÆÀßÄꤵ¤ì¤Æ¤¤¤ë¥ª¥×¥·¥ç¥ó name ¤ÎÃͤò¼èÆÀ¤¹¤ë¡£

Âбþ¤¹¤ë¥Þ¥¯¥í¤Î¤¦¤Á <unistd.h> ¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë¤â¤Î¤ÏºÇ¾®ÃͤǤ¢¤ë¡£¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ë¤è¤Ã¤Æ¤Ï¤³¤ì¤é¤Î ÃͤòÊѹ¹¤·¤Æ¤è¤êÍ­Íø¤ÊÆ°ºî¤ò¹Ô¤ª¤¦¤È¤¹¤ë¤â¤Î¤¬¤¢¤ë¡£¤³¤Î¾ì¹ç¤Ç¤â fpathconf() ¤Þ¤¿¤Ï pathconf() ¤Ï¸Æ¤Ó½Ð¤¹¤³¤È¤¬¤Ç¤­¤ë¡£¤³¤Î¾ì¹ç¤Ï¤è¤êÂ礭¤ÊÃͤ¬Ê֤뤳¤È¤Ë¤Ê¤í¤¦¡£

name ¤ò°Ê²¼¤ÎÄê¿ô¤Î¤É¤ì¤«¤Ë¤¹¤ë¤È¡¢Âбþ¤¹¤ëÀßÄꥪ¥×¥·¥ç¥ó¤¬ÊÖ¤µ¤ì¤ë¡£

_PC_LINK_MAX

¥Õ¥¡¥¤¥ë¤Ø¤Î¥ê¥ó¥¯¤ÎºÇÂç¿ô¤òÊÖ¤¹¡£ filedes ¤Þ¤¿¤Ï path ¤¬¥Ç¥£¥ì¥¯¥È¥ê¤Î¾ì¹ç¤Ï¡¢¤³¤ÎÃͤϥǥ£¥ì¥¯¥È¥êÁ´ÂΤËŬÍѤµ¤ì¤ë¡£Âбþ¤¹¤ë ¥Þ¥¯¥í¤Ï _POSIX_LINK_MAX ¤Ç¤¢¤ë¡£

_PC_MAX_CANON

¥Õ¥©¡¼¥Þ¥Ã¥ÈÉÕ¤­ÆþÎϹԤκÇÂ獵¤òÊÖ¤¹¡£¤³¤Î¤È¤­ filedes ¤Þ¤¿¤Ï path ¤ÏüËö¤ò»²¾È¤·¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ Âбþ¤¹¤ë¥Þ¥¯¥í¤Ï _POSIX_MAX_CANON ¤Ç¤¢¤ë¡£

_PC_MAX_INPUT

ÆþÎϹԤκÇÂ獵¤òÊÖ¤¹¡£¤³¤Î¤È¤­ filedes ¤Þ¤¿¤Ï path ¤ÏüËö¤ò»²¾È¤·¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ Âбþ¤¹¤ë¥Þ¥¯¥í¤Ï _POSIX_MAX_INPUT ¤Ç¤¢¤ë¡£

_PC_NAME_MAX

¥Ç¥£¥ì¥¯¥È¥ê path ¤Þ¤¿¤Ï filedes Æâ¤ËºîÀ®¤¹¤ë¤³¤È¤¬¤Ç¤­¤ë¥Õ¥¡¥¤¥ë̾¤ÎºÇÂ獵¤òÊÖ¤¹¡£ Âбþ¤¹¤ë¥Þ¥¯¥í¤Ï _POSIX_NAME_MAX ¤Ç¤¢¤ë¡£

_PC_PATH_MAX

path ¤Þ¤¿¤Ï filedes ¤¬¥«¥ì¥ó¥È¥Ç¥£¥ì¥¯¥È¥ê¤Î¾ì¹ç¡¢ÁêÂХѥ¹Ì¾¤ÎºÇÂ獵¤òÊÖ¤¹¡£ Âбþ¤¹¤ë¥Þ¥¯¥í¤Ï _POSIX_PATH_MAX ¤Ç¤¢¤ë¡£

_PC_PIPE_BUF

¥Ñ¥¤¥× (pipe) ¥Ð¥Ã¥Õ¥¡¤Î¥µ¥¤¥º¤òÊÖ¤¹¡£¤³¤Î¤È¤­ filedes ¤Ï¥Ñ¥¤¥×¤« FIFO ¤ò»²¾È¤·¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤º¡¢ path ¤Ï FIFO ¤ò»²¾È¤·¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ Âбþ¤¹¤ë¥Þ¥¯¥í¤Ï _POSIX_PIPE_BUF ¤Ç¤¢¤ë¡£

_PC_CHOWN_RESTRICTED

¤³¤Î¥Õ¥¡¥¤¥ë¤ËÂФ¹¤ë chown(2) ¤Î¸Æ¤Ó½Ð¤·¤¬µö¤µ¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¤Ë¤Ï 0 °Ê³°¤ÎÃͤòÊÖ¤¹¡£ filedes ¤Þ¤¿¤Ï path ¤¬¥Ç¥£¥ì¥¯¥È¥ê¤ò»²¾È¤·¤Æ¤¤¤ë¾ì¹ç¤Ï¡¢¤³¤ÎÀ©¸Â¤Ï¤½¤Î¥Ç¥£¥ì¥¯¥È¥ê¤Î¤¹¤Ù¤Æ ¤Î¥Õ¥¡¥¤¥ë¤ËŬÍѤµ¤ì¤ë¡£ Âбþ¤¹¤ë¥Þ¥¯¥í¤Ï _POSIX_CHOWN_RESTRICTED ¤Ç¤¢¤ë¡£

_PC_NO_TRUNC

¥¢¥¯¥»¥¹Ãæ¤Î¥Õ¥¡¥¤¥ë̾¤¬ _POSIX_NAME_MAX ¤è¤ê¤âŤ¯¡¢¥¨¥é¡¼¤È¤Ê¤ë¾ì¹ç¤Ë¤Ï 0 °Ê³°¤ÎÃͤòÊÖ¤¹¡£ Âбþ¤¹¤ë¥Þ¥¯¥í¤Ï _POSIX_NAME_MAX ¤Ç¤¢¤ë¡£

_PC_VDISABLE

Æüìʸ»ú (special character) ¤Î½èÍý¤¬µö¤µ¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¤Ï 0 °Ê³°¤ÎÃͤò ÊÖ¤¹¡£¤³¤Î¤È¤­ filedes ¤Þ¤¿¤Ï path ¤ÏüËö¤ò»²¾È¤·¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

ÊÖ¤êÃÍ

(¸ºß¤·¤Æ¤¤¤ì¤Ð) À©¸ÂÃͤ¬ÊÖ¤µ¤ì¤ë¡£Í׵ᤵ¤ì¤¿¥ê¥½¡¼¥¹¤Ø¤Î¥·¥¹¥Æ¥à¤ÎÀ© ¸Â¤¬Â¸ºß¤·¤Æ¤¤¤Ê¤±¤ì¤Ð -1 ¤¬ÊÖ¤µ¤ì¡¢ errno ¤ÏÊѹ¹¤µ¤ì¤Ê¤¤¡£¥¨¥é¡¼¤¬µ¯¤³¤Ã¤¿¾ì¹ç¤Ë¤Ï -1 ¤¬ÊÖ¤µ¤ì¡¢ errno ¤¬¥¨¥é¡¼¤ËÂбþ¤·¤¿ÃͤËÀßÄꤵ¤ì¤ë¡£

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POSIX.1-2001.

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name ¤Ë _PC_NAME_MAX ¤òÆþ¤ì¤ÆÊÖ¤µ¤ì¤¿Ãͤè¤ê¤âŤ¤¥Õ¥¡¥¤¥ë̾¤ò»ý¤Ä¥Õ¥¡¥¤¥ë¤¬¡¢Í¿¤¨¤é¤ì¤¿¥Ç¥£ ¥ì¥¯¥È¥ê¤Ë¸ºß¤¹¤ë¤«¤â¤·¤ì¤Ê¤¤¡£

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getconf(1), open(2), statfs(2), sysconf(3)