inet_ntop

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Version: 2000-12-18 (openSuse - 09/10/07)

Section: 3 (Bibliothèques de fonctions)

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#include <sys/types.h>

#include <sys/socket.h>

#include <arpa/inet.h>



const char *inet_ntop(int af, const void *src,

                      char *dst, socklen_t cnt);
 

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inet_ntop(3) ¤Ï inet_ntoa(3) ´Ø¿ô¤ò³ÈÄ¥¤·¤ÆÊ£¿ô¤Î¥¢¥É¥ì¥¹¥Õ¥¡¥ß¥ê¡¼¤ò°·¤¨¤ë¤è¤¦¤Ë¤·¤¿¤â¤Î¤Ç¤¢¤ë¡£ º£¸å¤Ï inet_ntoa(3) ¤Ï»È¤ï¤º¡¢ inet_ntop(3) ¤ò»È¤¦¤è¤¦¤Ë¤¹¤ë¤ÈÎɤ¤¤À¤í¤¦¡£ ¸½ºß¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤ë¥¢¥É¥ì¥¹¥Õ¥¡¥ß¥ê¡¼¤Ï°Ê²¼¤ÎÄ̤ê:

AF_INET
¤³¤Î¾ì¹ç src ¤Ï struct in_addr (¥Í¥Ã¥È¥ï¡¼¥¯¥Ð¥¤¥È¥ª¡¼¥À¡¼·Á¼°) ¤Ø¤Î¥Ý¥¤¥ó¥¿¤È¤ß¤Ê¤µ¤ì¡¢ ¤³¤Î¹½Â¤ÂΤÎÆâÍƤ¬ IPv4 ¥Í¥Ã¥È¥ï¡¼¥¯¥¢¥É¥ì¥¹¤Î ¥É¥Ã¥È¶èÀÚ¤ê 4 ʬ³ä·Á¼° "ddd.ddd.ddd.ddd" ¤ËÊÑ´¹¤µ¤ì¤ë¡£ ¥Ð¥Ã¥Õ¥¡ dst ¤Ï¾¯¤Ê¤¯¤È¤â INET_ADDRSTRLEN ¥Ð¥¤¥È¤ÎŤµ¤ò»ý¤¿¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
AF_INET6
¤³¤Î¾ì¹ç src ¤Ï struct in6_addr (¥Í¥Ã¥È¥ï¡¼¥¯¥Ð¥¤¥È¥ª¡¼¥À¡¼·Á¼°) ¤Ø¤Î¥Ý¥¤¥ó¥¿¤È¤ß¤Ê¤µ¤ì¡¢ ¤³¤Î¹½Â¤ÂΤÎÆâÍƤ¬¡¢ (¤³¤Î¥¢¥É¥ì¥¹¤ËÂФ·¤Æ¤â¤Ã¤È¤âŬÀÚ¤Ê) IPv6 ¥Í¥Ã¥È¥ï¡¼¥¯¥¢¥É¥ì¥¹¤Îɽ¼¨·Á¼°¤ËÊÑ´¹¤µ¤ì¤ë¡£ ¥Ð¥Ã¥Õ¥¡ dst ¤Ï¾¯¤Ê¤¯¤È¤â INET6_ADDRSTRLEN ¥Ð¥¤¥È¤ÎŤµ¤ò»ý¤¿¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

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inet_ntop() ¤Ï dst ¤Ø¤Î (NULL ¤Ç¤Ê¤¤) ¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£ ¥¨¥é¡¼¤¬µ¯¤³¤ë¤È NULL ¤òÊÖ¤·¡¢ af ¤¬¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤ë¥¢¥É¥ì¥¹¥Õ¥¡¥ß¥ê¡¼¤Ç¤Ê¤¤¾ì¹ç¤Ë¤Ï errno ¤Ë EAFNOSUPPORT ¤ò¡¢ ÊÑ´¹¤µ¤ì¤¿¥¢¥É¥ì¥¹Ê¸»úÎó¤¬ cnt ¤ÇÍ¿¤¨¤é¤ì¤¿ dst ¤Î¥µ¥¤¥º¤ò±Û¤¨¤Æ¤¤¤ë¾ì¹ç¤Ë¤Ï errno ¤Ë ENOSPC ¤òÂåÆþ¤¹¤ë¡£

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POSIX.1-2001. RFC 2553 ¤Ç¤ÏºÇ¸å¤Î¥Ñ¥é¥á¡¼¥¿ cnt ¤Î¥×¥í¥È¥¿¥¤¥×¤ò size_t ·¿¤ÈÄêµÁ¤·¤Æ¤¤¤ë¡£Â¿¤¯¤Î¥·¥¹¥Æ¥à¤Ç¤Ï RFC 2553 ¤Ë¤·¤¿¤¬¤Ã¤Æ¤¤¤ë¡£ glibc 2.0 ¤È 2.1 ¤Ç¤Ï size_t ¤À¤¬¡¢ glibc 2.2 ¤Ç¤Ï socklen_t ¤È¤Ê¤Ã¤Æ¤¤¤ë¡£

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AF_INET6 ¤Ï IPv6 ¤Ë¥Þ¥Ã¥×¤µ¤ì¤¿ IPv4 ¥¢¥É¥ì¥¹¤ò IPv6 ·Á¼°¤ËÊÑ´¹¤·¤Æ¤·¤Þ¤¦¡£

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inet_pton(3)