SOCKFD_LOOKUP(9)                         Linux Networking                        SOCKFD_LOOKUP(9)



NAME
       sockfd_lookup - Go from a file number to its socket slot

SYNOPSIS
       struct socket * sockfd_lookup(int fd, int * err);

ARGUMENTS
       fd
           file handle

       err
           pointer to an error code return

DESCRIPTION
       The file handle passed in is locked and the socket it is bound too is returned. If an
       error occurs the err pointer is overwritten with a negative errno code and NULL is
       returned. The function checks for both invalid handles and passing a handle which is not a
       socket.

       On a success the socket object pointer is returned.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                          SOCKFD_LOOKUP(9)