.\" Copyright (c) 1983, 1990, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the University of .\" California, Berkeley and its contributors. .\" 4. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" From: @(#) inet. 3 8.1 (Berkeley) 6/4/93 .\" %FreeBSD: src/lib/libc/net/inet. 3, v 1.8. 2.8 2001/12/01 21:15:38 cjc Exp % .\" $FreeBSD: doc/ja_JP.eucJP/man/man3/inet. 3, v 1.6 2002/05/18 07:12:55 horikawa Exp $ .\" .Dd June 17, 1996 .Dt INET 3 .Os .Sh ¸íĪ .Nm inet_aton , .Nm inet_addr , .Nm inet_network , .Nm inet_ntoa , .Nm inet_ntop , .Nm inet_pton , .Nm inet_makeaddr , .Nm inet_lnaof , .Nm inet_netof .Nd ÀÎÅÍ³Ý ÁÖ¼Ò Á¶ÀÛ ÇÔ¼ö .Sh ÇÁ·Î±×·¥ ¶óÀ̺귯¸® .Lb libc .Sh ¼­½Ä .In sys/types.h .In sys/socket.h .In netinet/in.h .In arpa/inet.h .Ft int .Fn inet_aton "const char *cp" "struct in_addr *pin" .Ft unsigned long .Fn inet_addr "const char *cp" .Ft unsigned long .Fn inet_network "const char *cp" .Ft char * .Fn inet_ntoa "struct in_addr in" .Ft const char * .Fn inet_ntop "int af" "const void *src" "char *dst" "size_t size" .Ft int .Fn inet_pton "int af" "const char *src" "void *dst" .Ft struct in_addr .Fn inet_makeaddr "unsigned long net" "unsigned long lna" .Ft unsigned long .Fn inet_lnaof "struct in_addr in" .Ft unsigned long .Fn inet_netof "struct in_addr in" .Sh ÇØ¼³ .Fn inet_aton , .Fn inet_addr ¹× .Fn inet_network routine´Â, ÀÎÅÍ³Ý Ç¥ÁØÀÇ .Ql . \& Ç¥±â¹ýÀ¸·Î ³ªÅ¸³ª´Â ¼öÄ¡¸¦ Ç¥ÇöÇϰí Àִ ij¸¯ÅÍ ¶óÀÎÀ» ÇØ¼®ÇÕ´Ï´Ù. .Pp .Fn inet_pton ÇÔ¼ö´Â, Ç¥½Ã Çü½ÄÀÇ ÁÖ¼Ò (Áï ij¸¯ÅÍ ¶óÀÎÀ¸·Î º¸°ü À¯ÁöµÇ°í ÀÖ´Â ÀÎÀÚ °¡´ÉÇÑ Çü½Ä)·ÎºÎÅÍ ³×Æ®¿öÅ© Çü½Ä (Åë»ó .Ft struct in_addr ȤÀº ´Ù¸¥ ³»ºÎÀûÀÎ ¹ÙÀ̳ʸ® Ç¥Çö Çü½Ä¿¡¼­, ³×Æ®¿öÅ© ¹ÙÀÌÆ® ¿À´õ)¿¡ÀÇ º¯È¯À» ½Ç½ÃÇÕ´Ï´Ù. ÀÌ ÇÔ¼ö´Â, ÁöÁ¤µÈ ÁÖ¼Ò ÆÐ¹Ð¸®¿¡ ÀÖ¾î, ÁÖ¼Ò°¡ À¯È¿ÇÑ °ÍÀ̸é 1 À» µ¹·ÁÁÖ¾î, ÆÛ½º ÇÒ ¼ö ¾øÀ¸¸é 0 À» µ¹·ÁÁÝ´Ï´Ù. ¶Ç ½Ã½ºÅÛ ¿ì·ù°¡ ¹ß»ýÇßÀ» ¶§ (ÀÌ °æ¿ì´Â .Va errno ÇÏÁö¸¸ ¼³Á¤µË´Ï´Ù)¿¡´Â,-1 À» µ¹·ÁÁÝ´Ï´Ù. ÀÌ ÇÔ¼ö´Â ÇöÀç .Dv AF_INET (¿Í)°ú .Dv AF_INET6 ¿¡ ´ëÇØ¼­ À¯È¿ÇÕ´Ï´Ù. .Pp .Fn inet_aton routine´Â, ÁöÁ¤µÈ ij¸¯ÅÍ ¶óÀÎÀ» ÀÎÅÍ³Ý Áּҷμ­ ÇØ¼®ÇØ, ÁÖ¾îÁø ±¸Á¶Ã¼¾È¿¡ ÁÖ¼Ò¸¦ ¼³Á¤ÇÕ´Ï´Ù. ij¸¯ÅÍ ¶óÀÎÀÌ Á¤»óÀûÀ¸·Î ÇØ¼®µÇ¸é(ÀÚ) µ¿routine´Â 1 À» µ¹·ÁÁÖ¾î, ij¸¯ÅÍ ¶óÀÎÀÌ ¹«È¿ ¶§ 0 À» µ¹·ÁÁÝ´Ï´Ù. .Fn inet_addr (¿Í)°ú .Fn inet_network ÇÔ¼ö´Â °¢°¢, ÀÎÅÍ³Ý ÁÖ¼Ò¿Í ÀÎÅÍ³Ý ³×Æ®¿öÅ© ¹øÈ£·Î¼­ »ç¿ëÇϴµ¥ ÀûÇÕÇÑ ¼öÄ¡¸¦ µ¹·ÁÁÝ´Ï´Ù. .Pp .Fn inet_ntop ÇÔ¼ö´Â, ³×Æ®¿öÅ© Çü½Ä (Åë»ó .Ft struct in_addr ȤÀº ´Ù¸¥ ³»ºÎÀûÀÎ ¹ÙÀ̳ʸ® Çü½Ä¿¡¼­, ³×Æ®¿öÅ© ¹ÙÀÌÆ® ¿À´õ)·ÎºÎÅÍ Ç¥½Ã Çü½Ä (¿ÜºÎ¿¡ Ç¥½ÃÇϴµ¥ ÀûÇÕÇÑ Çü½Ä)¿¡ÀÇ º¯È¯À» ½Ç½ÃÇÕ´Ï´Ù. ÀÌ ÇÔ¼ö´Â, ½Ã½ºÅÛ ¿ì·ù°¡ ¹ß»ýÇßÀ» ¶§ (ÀÌ °æ¿ì´Â .Va errno ÇÏÁö¸¸ ¼³Á¤µË´Ï´Ù)¿¡´Â ´­À» µ¹·ÁÁÖ¾î, ±× À̿ܶ§´Â ¸ñÀûÀÇ Ä³¸¯ÅÍ ¶óÀο¡ÀÇ Æ÷ÀÎÅ͸¦ µ¹·ÁÁÝ´Ï´Ù. ÀÌ ÇÔ¼ö´Â ÇöÀç .Dv AF_INET (¿Í)°ú .Dv AF_INET6 ¿¡ ´ëÇØ¼­ À¯È¿ÇÕ´Ï´Ù. .Pp .Fn inet_ntoa routine´Â, ÀÎÅÍ³Ý ÁÖ¼Ò¸¦ ¹Þ¾Æ .Ql . \& Ç¥±â¹ýÀÇ ÁÖ¼Ò¸¦ ³ªÅ¸³½´Ù .Tn ASCII ij¸¯ÅÍ ¶óÀÎÀ» µ¹·ÁÁÝ´Ï´Ù. .Fn inet_makeaddr routine´Â ÀÎÅÍ³Ý ³×Æ®¿öÅ© ¹øÈ£¿Í ·ÎÄà ³×Æ®¿öÅ© ÁÖ¼Ò¸¦ ¹Þ¾Æ, ±×°ÍÀ» ±âº»À¸·Î ÇØ ÀÎÅÍ³Ý ÁÖ¼Ò¸¦ »ý¼ºÇÕ´Ï´Ù. .Fn inet_netof (¿Í)°ú .Fn inet_lnaof routine´Â ÀÎÅÍ³Ý È£½ºÆ® ÁÖ¼Ò¸¦ ºÐÇÒÇØ, °¢°¢ ³×Æ®¿öÅ© ¹øÈ£¿Í ·ÎÄà ³×Æ®¿öÅ© ÁּҺημ­ µ¹·ÁÁÝ´Ï´Ù. .Pp ¸ðµç ÀÎÅÍ³Ý ÁÖ¼Ò´Â ³×Æ®¿öÅ© ¿À´õ (¿ÞÂÊ¿¡¼­ ¿À¸¥ÂÊ¿¡ÀÇ ¹ÙÀÌÆ®¼ø¼­)·Î µ¹·ÁÁÖ¾îÁý´Ï´Ù. ³×Æ®¿öÅ© ¹øÈ£¿Í ·ÎÄà ÁּҺδ ¸ðµÎ ¸Ó½Å Çü½ÄÀÇ Á¤¼öÄ¡·Î µ¹·ÁÁÖ¾îÁý´Ï´Ù. .Pp .Sh ÀÎÅÍ³Ý ÁÖ¼Ò .Ql . \& Ç¥±â¹ýÀ¸·Î ÁöÁ¤µÇ´Â °ªÀº ´ÙÀ½ÀÇ ¾î¶² °ÍÀΰ¡ ÇϳªÀÇ Çü½ÄÀ» ÃëÇÕ´Ï´Ù. .Bd -literal -offset indent a.b.c.d a.b.c a.b a .Ed .Pp 4 °³ÀÇ ºÎºÐ ÁÖ¼Ò°¡ ÁöÁ¤µÇ¸é(ÀÚ), °¢ ºÎºÐÀº 1 ¹ÙÀÌÆ®ÀÇ µ¥ÀÌÅͶó°í ÇØ¼®µÇ¾î, ¿ÞÂÊ¿¡¼­ ¿À¸¥ÂÊÀÇ ¼ø¼­·Î ÀÎÅÍ³Ý ÁÖ¼ÒÀÇ 4 ¹ÙÀÌÆ®¿¡ ÇÒ´çÇÒ ¼ö ÀÖ½À´Ï´Ù. ÀÎÅÍ³Ý ÁÖ¼Ò°¡ .Tn VAX À§¿¡¼­ 32 ºñÆ®ÀÇ Á¤¼öÄ¡ÀÌ´Ù°í º¸¿©Áú ¶§, »ó±â¿¡ ÇØ´çÇÏ´Â ¹ÙÀÌÆ®´Â, .Dq Li d.c.b.a (ÀÌ)¶ó°í Ç¥½ÃµÇ´Â °Í¿¡ ÁÖÀÇÇØ ÁÖ¼¼¿ä. Áï, .Tn VAX ÀÇ ¹ÙÀÌÆ® ¿À´õ´Â ¿À¸¥ÂÊ¿¡¼­ ¿ÞÂÊÀÇ ¼ø¼­°¡ µË´Ï´Ù. .Pp 3 °³ÀÇ ºÎºÐ ÁÖ¼Ò°¡ ÁöÁ¤µÇ¸é(ÀÚ), ¸¶Áö¸· ºÎºÐÀÌ 16 ºñƮġ¶ó°í ÇØ¼®µÇ¾î, ³×Æ®¿öÅ© ÁÖ¼ÒÀÇ ¿ì´ÜÀÇ 2 ¹ÙÀÌÆ®°¡ µË´Ï´Ù. À̰Ϳ¡ ÀÇÇØ 3 °³ÀÇ ºÎºÐ ÁÖ¼Ò Çü½Ä¿¡¼­ Class B ³×Æ®¿öÅ© ÁÖ¼Ò¸¦ .Dq Li 128.net.host (¿Í)°ú ÁöÁ¤ÇÒ ¼ö ÀÖ¾î Æí¸®ÇÕ´Ï´Ù. .Pp 2 °³ÀÇ ºÎºÐ ÁÖ¼Ò°¡ ÁÖ¾îÁö¸é(ÀÚ), ¸¶Áö¸· ºÎºÐ ÁÖ¼Ò°¡ 24 ºñƮġ·Î¼­ ÇØ¼®µÇ¾î, ³×Æ®¿öÅ© ÁÖ¼ÒÀÇ ¿ì´ÜÀÇ 3 ¹ÙÀÌÆ®°¡ µË´Ï´Ù. À̰Ϳ¡ ÀÇÇØ 2 °³ÀÇ ºÎºÐ ÁÖ¼Ò Çü½Ä¿¡¼­ Class A ³×Æ®¿öÅ© ÁÖ¼Ò¸¦ .Dq Li net.host (¿Í)°ú ÁöÁ¤ÇÒ ¼ö ÀÖ¾î Æí¸®ÇÕ´Ï´Ù. .Pp 1 °³ÀÇ ºÎºÐ ÁÖ¼Ò¸¸ ÁöÁ¤µÇ¸é(ÀÚ), °ªÀº ¹ÙÀÌÆ®ÀÇ ÀçÁ¶Á¤¾øÀÌ Á÷Á¢ ³×Æ®¿öÅ© ÁÖ¼Ò¿¡ º¸Á¸µË´Ï´Ù. .Pp .Ql . \& Ç¥±â¹ýÀ¸·Î .Dq ºÎºÐ (À¸)·Î¼­ °ø±ÞµÇ´Â ¼öÄ¡´Â ¸ðµÎ, C ¾ð¾î·Î ÁöÁ¤µÇ´Â 10 Áø¼ö, 8 Áø¼ö, 16 Áø¼öÀÇ ¸î°³ÀÇ Çü½ÄÀ» ÃëÇÒ ¼ö°¡ ÀÖ½À´Ï´Ù (Áï, ¼±ÇàÀÇ 0x ¶Ç´Â 0X ´Â 16 Áø¼ö¸¦ ÀǹÌÇØ, ¼±ÇàÇÏ´Â 0 Àº 8 Áø¼ö¸¦ ÀǹÌÇØ, ¼öÄ¡´Â 10 Áø¼ö¶ó°í ÇØ¼®µË´Ï´Ù) . .Pp .Fn inet_aton (¿Í)°ú .Fn inet_ntoa ÇÔ¼ö´Â ¾à°£ ÇÇÇØ¾ß ÇÒ ÇÔ¼ö·Î, ¿ÀÈ÷·Á .Xr addr2ascii 3 ÆÐ¹Ð¸®°¡ »ç¿ëµË´Ï´Ù. ±×·¯³ª, ÀÌ·¯ÇÑ ÇÔ¼ö´Â ¾ÆÁ÷ ³Ð°Ô ½ÇÀåµÇ¾î ÀÖÁö ¾Ê±â ¶§¹®¿¡, ´ç¸é, À̽ļºÀÌ ÀÖ´Â ÇÁ·Î±×·¥Àº ÀÌ·¯ÇÑ ÇÔ¼ö¿¡ ÀÇÁ¸ÇÏÁö ¸øÇϰí, .Xr inet 3 ÇÔ¼ö°¡ °è¼Ó »ç¿ëµÇ°ÚÁö¿ä. .Sh Áø´Ü .Fn inet_addr (¿Í)°ú .Fn inet_network (Àº)´Â Çü½Ä À§¹ÝÀÇ ¿ä±¸¿¡ ´ëÇØ .Dv INADDR_NONE Á¤¼ö¸¦ µ¹·ÁÁÝ´Ï´Ù. .Sh °ü·Ã Ç׸ñ .Xr addr2ascii 3 , .Xr gethostbyname 3 , .Xr getnetent 3 , .Xr hosts 5 , .Xr networks 5 .Rs . %R RFC . %N 2373 . %D July 1998 . %T "IP Version 6 Addressing Architecture" .Re .Sh Ç¥ÁØ .Fn inet_ntop (¿Í)°ú .Fn inet_pton ÇÔ¼ö´Â, .St -xns5. 2 ¿¡ ÀûÇÕÇϰí ÀÖ½À´Ï´Ù. .Fn inet_pton ÇÔ¼ö´Â, 1 °³, 2 °³ ȤÀº 3 °³ÀÇ ´å Çü½ÄÀÇ ÁÖ¼Ò¿¡´Â ´ëÀÀÇϰí ÀÖÁö ¾Ê´Â °Í¿¡ ÁÖÀÇÇØ ÁÖ¼¼¿ä. ÁÖ¼Ò´Â 4 °³·Î ³ª´©¾î, 10 Áø¼ö·Î ÁöÁ¤ÇÏÁö ¾ÊÀ¸¸é ¾ÈµË´Ï´Ù. À̰ÍÀº .Fn inet_aton ÇÔ¼ö°¡ ¹ÞÀ» ¼ö ÀÖ´Â ÀÔ·Â ¼¼Æ®º¸´Ù Á¼Àº °ÍÀÔ´Ï´Ù. .Sh ¿ª»ç ÀÌ·¯ÇÑ ÇÔ¼ö´Â .Bx 4.2 ±×¸®°í µîÀåÇß½À´Ï´Ù. .Pp .Sh ¹ö±× .Dv INADDR_NONE (0xffffffff) °ªÀº À¯È¿ÇÑ ºê·Îµåij½ºÆ® ¾îµå·¹½ºÀÔ´Ï´Ù¸¸, .Fn inet_addr (Àº)´Â ÀÌ °ªÀ» µ¹·ÁÁÙ ¶§¿¡ ½ÇÆÐ¸¦ ³ªÅ¸³» ¹ö¸³´Ï´Ù. »õ·Ó´Ù .Fn inet_aton ÇÔ¼ö¿¡¼­´Â, ÀÌ ¹®Á¦´Â ÇØ°áµÇ°í ÀÖ½À´Ï´Ù. È£½ºÆ® ¹ÙÀÌÆ® ¿À´õ´ë ³×Æ®¿öÅ© ¾Æ¸£¹ÙÀÌÆ® ¿À´õÀÇ ¹®Á¦´Â È¥¶õÇϱ⠽±»óÀÔ´Ï´Ù. .Fn inet_ntoa ÇÏÁö¸¸ µ¹·ÁÁִ ij¸¯ÅÍ ¶óÀÎÀº Á¤Àû ¸Þ¸ð¸® area¿¡ °ÅµÑ ¼ö ÀÖ½À´Ï´Ù. .Pp inet_addr ´Â .Fa struct in_addr (À»)¸¦ µ¹·ÁÁÙ Çʿ䰡 ÀÖ½À´Ï´Ù.