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CONFSTR

Section: Linux Programmer's Manual (3)
Updated: April 17, 1993
Index Return to Main Contents
 

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#define _POSIX_C_SOURCE 2
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#define _XOPEN_SOURCE
#include <unistd.h>

size_t confstr(int name, char *buf, size_t len);
 

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_CS_PATH
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¤â¤· len ¤¬0¤Ç buf ¤¬ NULL ¤Ê¤é¤Ð confstr() ¤Ï¾å¤ÇÄêµÁ¤µ¤ì¤¿ÃÍ(ÌõÃí: ÀÚ¤ê¼Î¤Æ¤ëÁ°¤Î¡¢¼èÆÀ¤·¤¿Ê¸»úÎó¤ÎŤµ)¤òÊÖ¤¹¡£  

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¤â¤· name ¤¬Àµ¤·¤¤¥³¥ó¥Õ¥£¥°¥ì¡¼¥·¥ç¥óÊÑ¿ô¤ËÂбþ¤·¤Æ¤¤¤Ê¤±¤ì¤Ð¡¢ confstr() ¤Ï0¤òÊÖ¤¹¡£  

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char *pathbuf; size_t n;

n = confstr(_CS_PATH,NULL,(size_t)0);
if ((pathbuf = malloc(n)) == NULL) abort();
confstr(_CS_PATH, pathbuf, n);
 

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¤â¤· name ¤ÎÃͤ¬ÉÔÀµ¤Ç¤¢¤Ã¤¿¤Ê¤é¤Ð¡¢ errno ¤¬ EINVAL ¤Ë¥»¥Ã¥È¤µ¤ì¤ë¡£  

CONFORMS TO

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sh(1), exec(3), system(3)


 

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