FPATHCONF

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#include <unistd.h>

long fpathconf(int filedes, int name);
long pathconf(char *path, int name);

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pathconf() ¤Ï¥Õ¥¡¥¤¥ë 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

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_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

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_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¡£

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¥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¡£

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¤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¡£

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_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¤¤¡£

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