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BIND
Section: Linux Programmer's Manual (2)Updated: 3 Oct 1998
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bind - ¥½¥±¥Ã¥È¤Ë̾Á°¤ò¤Ä¤±¤ë½ñ¼°
#include <sys/types.h>#include <sys/socket.h>
int bind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen);
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bind ¤Ï¥½¥±¥Ã¥È sockfd ¤Ë¥¢¥É¥ì¥¹ my_addr ¤òÍ¿¤¨¤ë¡£ my_addr ¤Ï addrlen ¥Ð¥¤¥È¤ÎŤµ¤Ç¤¢¤ë¡£ ÅÁÅýŪ¤Ë¤³¤ì¤Ï ¡Ö¥½¥±¥Ã¥È¤Ë̾Á°¤ò¤Ä¤±¤ë¡× ¤È¸Æ¤Ð¤ì¤ë¡£ socket(2) ¤Ç¥½¥±¥Ã¥È¤¬ºîÀ®¤µ¤ì¤¿¤È¤¡¢ ¥½¥±¥Ã¥È¤Ï̾Á°¶õ´Ö(¥¢¥É¥ì¥¹¡¦¥Õ¥¡¥ß¥ê¡¼)¤Ë¸ºß¤¹¤ë¤¬¡¢ ̾Á°¤Ï¤Ä¤±¤é¤ì¤Æ¤¤¤Ê¤¤¡£Ä̾ SOCK_STREAM ¥½¥±¥Ã¥È¤Ë¤è¤Ã¤ÆÀܳ¤ò¼õ¤±Æþ¤ì¤ë( accept(2) ¤ò»²¾È)Á°¤Ë bind ¤ò»ÈÍѤ·¤Æ¥í¡¼¥«¥ë¥¢¥É¥ì¥¹¤ò³ä¤êÅö¤Æ¤ëɬÍפ¬¤¢¤ë¡£
Ãí°Õ
̾Á°ÉÕ¤±¤Î¥ë¡¼¥ë¤Ï¥¢¥É¥ì¥¹¡¦¥Õ¥¡¥ß¥ê¡¼¤´¤È¤Ë°Û¤Ê¤Ã¤Æ¤¤¤ë¡£¾ÜºÙ¤Ê¾ðÊó¤Ï Âè 7 ¾Ï¤Î³Æ¥Þ¥Ë¥å¥¢¥ë¤ò»²¾È¤¹¤ë¤³¤È¡£ AF_INET ¤Ë¤Ä¤¤¤Æ¤Ï ip(7) ¤ò»²¾È¡£ AF_UNIX ¤Ë¤Ä¤¤¤Æ¤Ï unix(7) ¤ò»²¾È¡£ AF_APPLETALK ¤Ë¤Ä¤¤¤Æ¤Ï ddp(7) ¤ò»²¾È¡£ AF_PACKET ¤Ë¤Ä¤¤¤Æ¤Ï packet(7) ¤ò»²¾È¡£ AF_X25 ¤Ë¤Ä¤¤¤Æ¤Ï x25(7) ¤ò»²¾È¡£ AF_NETLINK ¤Ë¤Ä¤¤¤Æ¤Ï netlink(7) ¤ò»²¾È¡£ÊÖ¤êÃÍ
À®¸ù¤¹¤ë¤È¥¼¥í¤òÊÖ¤¹¡£ ¼ºÇÔ¤¹¤ë¤È -1 ¤òÊÖ¤·¡¢ errno ¤ËŬÀÚ¤ÊÃͤòÀßÄꤹ¤ë¡£¥¨¥é¡¼
- EBADF
- sockfd ¤¬ÉÔÀµ¤Ê¥Ç¥£¥¹¥¯¥ê¥×¥¿¡¼¤Ç¤¢¤ë¡£
- EINVAL
- ¥½¥±¥Ã¥È¤¬¤¹¤Ç¤Ë¥¢¥É¥ì¥¹¤Ë·ë¤Ó¤Ä¤±(bind)¤é¤ì¤Æ¤¤¤ë¡£ ¤³¤ì¤Ï¾ÍèÊѹ¹¤µ¤ì¤ë¤«¤â¤·¤ì¤Ê¤¤¡£ ¾Ü¤·¤¯¤Ï linux/unix/sock.c ¤ò»²¾È¤¹¤ë¤³¤È¡£
- EACCES
- ¤½¤Î¥¢¥É¥ì¥¹¤ÏÊݸ¤ì¤Æ¤¤¤Æ¡¢¤«¤Ä¥æ¡¼¥¶¡¼¤¬¥¹¡¼¥Ñ¡¼¡¦¥æ¡¼¥¶¡¼¤Ç¤Ï¤Ê¤¤¡£ ENOTSOCK °ú¤¿ô¤Î¥Ç¥£¥¹¥¯¥ê¥×¥¿¡¼¤Ï¥Õ¥¡¥¤¥ë¤ËÂФ¹¤ë¤â¤Î¤Ç¡¢¥½¥±¥Ã¥È¤Ç¤Ï¤Ê¤¤¡£
°Ê²¼¤Î¥¨¥é¡¼¤Ï UNIX¥É¥á¥¤¥ó (AF_UNIX) ¤Î¥½¥±¥Ã¥ÈÆÃͤǤ¢¤ë:
- EINVAL
- addrlen ¤¬ÉÔÀµ¤Ç¤¢¤ë¤«¡¢¥½¥±¥Ã¥È¤¬ AF_UNIX ¥Õ¥¡¥ß¥ê¡¼¤Ç¤Ï¤Ê¤¤¡£
- EROFS
- ¥½¥±¥Ã¥È inode ¤¬Æɤ߹þ¤ßÀìÍѤΥե¡¥¤¥ë¥·¥¹¥Æ¥à¾å¤Ë¤¢¤ë¡£
- EFAULT
- my_addr ¤¬¥æ¡¼¥¶¤Î¥¢¥¯¥»¥¹²Äǽ¤Ê¥¢¥É¥ì¥¹¶õ´Ö¤Î³°¤ò»Ø¤·¤Æ¤¤¤ë¡£
- ENAMETOOLONG
- my_addr ¤¬Ä¹²á¤®¤ë¡£
- ENOENT
- ¥Õ¥¡¥¤¥ë¤¬Â¸ºß¤·¤Ê¤¤¡£
- ENOMEM
- ¥«¡¼¥Í¥ë¤Ë¡¢ÍøÍѲÄǽ¤Ê¥á¥â¥ê¡¼¤¬½½Ê¬¤Ë¤Ê¤¤¡£
- ENOTDIR
- ¥Ñ¥¹Ì¾¤Î¹½À®Í×ÁǤ¬¥Ç¥£¥ì¥¯¥È¥ê¤Ç¤Ï¤Ê¤¤¡£
- EACCES
- ¥Ñ¥¹Ì¾¤Î¹½À®Í×ÁǤ˸¡º÷µö²Ä(search permission)¤¬¤Ê¤¤¡£
- ELOOP
- my_addr ¤ò²ò·è¤¹¤ëºÝ¤ËÁø¶ø¤·¤¿¥·¥ó¥Ü¥ê¥Ã¥¯¡¦¥ê¥ó¥¯¤¬Â¿²á¤®¤ë¡£
¥Ð¥°
Æ©²áŪ¥×¥í¥¥·(ransparent proxy)¥ª¥×¥·¥ç¥ó¤Ë¤Ä¤¤¤Æµ½Ò¤·¤Æ¤¤¤Ê¤¤¡£½àµò
SVr4, 4.4BSD bind ´Ø¿ô¤Ï BSD 4.2 ¤ÇºÇ½é¤Ë¸½¤ï¤ì¤¿)¡£ SVr4 ¤Ë¤Ï¾¤Ë EADDRNOTAVAIL, EADDRINUSE, ENOSR ¤Î°ìÈ̤Υ¨¥é¡¼¾õÂÖ¡¢ µÚ¤Ó EIO, EISDIR, EROFS ¤Î Unix ¥É¥á¥¤¥ó¤Î¥¨¥é¡¼¾õÂ֤ˤĤ¤¤Æ¤Îµ½Ò¤¬¤¢¤ë¡£Ãí°Õ
bind ¤Î»°ÈÖÌܤΰú¤¿ô¤Ï BSD 4.* ¤ä libc4, libc5 ¤ÈƱÍͤˡ¢¼ÂºÝ¤Ë¤Ï int ¤Ç¤¢¤ë¡£ ¸½ºß socklen_t ¤Ë´Ø¤·¤Æ POSIX ¤Ë¤Ï¾¯¤·º®Í𤬤¢¤ë¡£µ¬³Ê¤ÎÁð¹Æ¤Ï¤Þ¤ÀºÎÍÑ ¤µ¤ì¤Æ¤¤¤Ê¤¤¤¬¡¢glibc2 ¤Ç¤Ï¤½¤ì¤Ë½¾¤Ã¤Æ socklen_t ¤ò»ÈÍѤ·¤Æ¤¤¤ë¡£ ¾Ü¤·¤¯¤Ï accept(2) ¤ò»²¾È¤Î¤³¤È¡£´ØÏ¢¹àÌÜ
accept(2), connect(2), listen(2), socket(2), getsockname(2), ip(7), socket(7)