NAME

       connectat — initiate a connection on a socket

LIBRARY

       Standard C Library (libc, -lc)

SYNOPSIS

       #include <sys/types.h>
       #include <sys/socket.h>

       #include <fcntl.h>

       int
       connectat(int fd, int s, const struct sockaddr *name, socklen_t namelen);

DESCRIPTION

       The  connectat()  system call initiates a connection on a socket.  When passed the special value AT_FDCWD
       in the fd parameter, the behavior is identical to a call to  connect(2).   Otherwise,  connectat()  works
       like the connect(2) system call with two exceptions:

             1.   It is limited to sockets in the PF_LOCAL domain.

             2.   If the file path stored in the sun_path field of the sockaddr_un structure is a relative path,
                  it is located relative to the directory associated with the file descriptor fd.

RETURN VALUES

       The  connectat()  function  returns the value 0 if successful; otherwise the value -1 is returned and the
       global variable errno is set to indicate the error.

ERRORS

       The connectat() system call may fail with the same errors as the  connect(2)  system  call  or  with  the
       following errors:

       [EBADF]            The  sun_path  field  does not specify an absolute path and the fd argument is neither
                          AT_FDCWD nor a valid file descriptor.

       [ENOTDIR]          The sun_path field is not an absolute path and fd  is  neither  AT_FDCWD  nor  a  file
                          descriptor associated with a directory.

SEE ALSO

       bindat(2), connect(2), socket(2), unix(4)

AUTHORS

       The connectat was developed by Pawel Jakub Dawidek <pawel@dawidek.net> under sponsorship from the FreeBSD
       Foundation.

Debian                                          February 13, 2013                                   CONNECTAT(2)