sockfd_lookup (9) - Linux Manuals

sockfd_lookup: Go from a file number to its socket slot

Command to display sockfd_lookup manual in Linux: $ man 9 sockfd_lookup

NAME

sockfd_lookup - Go from a file number to its socket slot

SYNOPSIS

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

ARGUMENTS

: 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.