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.\" Modified Mon Oct 21 23:05:29 EDT 1996 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified 1998 by Andi Kleen
.TH BIND 2 "3 Oct 1998" "Linux 2.2" "Linux Programmer's Manual"
.SH NAME 名称
bind \- 将一个名字和一个套接字绑定到一起(赋一个名字给一个套接字)
.SH SYNOPSIS 概述
.B #include <sys/types.h>
.br
.B #include <sys/socket.h>
.sp
.BI "int bind(int " sockfd ", struct sockaddr *" my_addr ", socklen_t " addrlen );
.SH DESCRIPTION 描述
.B bind
为套接字
.I sockfd
指定本地地址
.IR my_addr .
.I my_addr
的长度为
.I addrlen
(字节).传统的叫法是给一个套接字分配一个名字.
当使用
.BR socket (2),
函数创建一个套接字时,它存在于一个地址空间(地址族),
但还没有给它分配一个名字
.PP
一般来说在使用
.B SOCK_STREAM
套接字建立连接之前总要使用
.B bind
为其分配一个本地地址.参见
.BR accept (2)).
.SH NOTES 注意
这条规则用于给每个地址族绑定不同的名称.更多细节请参
考手册页第7册(man7).
对于
.B AF_INET
参见
.BR ip (7),
对于
.B AF_UNIX
参见
.BR unix (7),
对于
.B AF_APPLETALK
参见
.BR ddp (7),
对于
.B AF_PACKET
参见
.BR packet (7),
对于r
.B AF_X25
参见
.BR x25 (7)
对于
.B AF_NETLINK
参见
.BR netlink (7).

.SH "RETURN VALUE" "返回值"
函数执行成功返回0,否则返回\-1,
并设置错误代码.
.SH ERRORS 错误
.TP
.B EBADF
.I sockfd
不是一个合法套接字描述符.
.TP
.B EINVAL
套接字已经绑定到一个地址.这一条在以后会有所改变:
具体参见
.I linux/unix/sock.c
.TP
.B EACCES
地址受保护,用户不是系统管理员.
.TP
.B ENOTSOCK
参数是文件描述符,不是一个套接字.
.PP
下列错误适用于UNIX域 
.RB ( AF_UNIX ) 
套接字.
.TP
.B EINVAL
地址长度
.I addrlen
错误,或者套接字不在
.B AF_UNIX
族.
.TP
.B EROFS
套接字节点位于只读文件系统.
.TP
.B EFAULT
.I my_addr
指向用户无权访问的地址空间.
.TP
.B ENAMETOOLONG
.I my_addr
长度超范围.
.TP
.B ENOENT
文件不存在.
.TP
.B ENOMEM
内核存储空间不足.
.TP
.B ENOTDIR
指定路径不是一个目录.
.TP
.B EACCES
指定路径拒绝访问.
.TP
.B ELOOP
在解析
.IR my_addr
时发现过多符号连接.
.SH BUGS 勘误
透明代理选项没有描述.
.SH CONFORMING TO 一致性
SVr4,4.4BSD(函数
.B bind
首次出现于BSD 4.2)SVr4文档增加了
.BR EADDRNOTAVAIL , 
.BR EADDRINUSE , 
和
.B ENOSR 
一般性错误,
还增加了
.BR EIO , 
.B EISDIR 
和
.B EROFS 
Unix域错误.
.SH NOTE
函数
.B bind
的第三个参数实际上是int类型(BSD 4.*和libc4以及libc5都是这么做的).
不知为什么有的POSIX系统目前仍在使用socklen_t.
目前尚无统一标准,不过glibc2两者都使用.参见
.BR accept (2).
.SH "SEE ALSO" "参见"
.BR accept (2),
.BR connect (2),
.BR listen (2),
.BR socket (2),
.BR getsockname (2),
.BR ip (7),
.BR socket (7)
.SH "跋"
.br
本页面中文版由中文 man 手册页计划提供。
.br
中文 man 手册页计划：\fBhttps://github.com/man-pages-zh/manpages-zh\fR