BIND(2) BSD Programmer's Manual BIND(2)NAMEbind - bind a name to a socket
SYNOPSIS
#include <sys/types.h>
#include <sys/socket.h>
int
bind(int s, const struct sockaddr *name, socklen_t namelen);
DESCRIPTIONBind() assigns a name (address) to an unnamed socket. When a socket is
created with socket(2) it exists in a name space (address family) but has
no name assigned. Bind() requests that name be assigned to the socket.
The namelen parameter specifies the size of name.
NOTES
Binding a name in the LOCAL domain creates a socket in the file system
that must be deleted by the caller when it is no longer needed (using
unlink(2)).
The rules used in name binding vary between communication domains. Con-
sult the manual entries in section 4 for detailed information.
RETURN VALUES
If the bind is successful, a 0 value is returned. A return value of -1
indicates an error, which is further specified in the global errno.
ERRORS
The bind() call will fail if:
[EBADF] S is not a valid descriptor.
[ENOTSOCK] S is not a socket.
[EADDRNOTAVAIL]
The specified address is not available from the local ma-
chine.
[EADDRINUSE]
The specified address is already in use.
[EINVAL] The socket is already bound to an address.
[EACCES] The requested address is protected, and the current user has
inadequate permission to access it.
[EFAULT] The name parameter is not in a valid part of the user ad-
dress space.
The following errors are specific to binding names in the LOCAL domain.
[ENOTDIR] A component of the path prefix is not a directory.
[EINVAL] The pathname contains a character with the high-order bit
set.
[ENAMETOOLONG]
A component of a pathname exceeded 255 characters, or an en-
tire path name exceeded 1023 characters.
[ENOENT] A prefix component of the path name does not exist.
[ELOOP] Too many symbolic links were encountered in translating the
pathname.
[EIO] An I/O error occurred while making the directory entry or
allocating the inode.
[EROFS] The name would reside on a read-only file system.
[EISDIR] An empty pathname was specified.
SEE ALSOconnect(2), listen(2), socket(2), getsockname(2)HISTORY
The bind function call appeared in 4.2BSD.
4.2 Berkeley Distribution June 4, 1993 2
