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 2.6. July 2010 SOCKFD_LOOKUP(9)
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SOCKET_ACCEPT(3) 1 SOCKET_ACCEPT(3)socket_accept - Accepts a connection on a socketSYNOPSIS
resource socket_accept (resource $socket)
DESCRIPTION
After the socket $socket has been created using socket_create(3), bound to a name with socket_bind(3), and told to listen for connections
with socket_listen(3), this function will accept incoming connections on that socket. Once a successful connection is made, a new socket
resource is returned, which may be used for communication. If there are multiple connections queued on the socket, the first will be used.
If there are no pending connections, socket_accept(3) will block until a connection becomes present. If $socket has been made non-blocking
using socket_set_blocking(3) or socket_set_nonblock(3), FALSE will be returned.
The socket resource returned by socket_accept(3) may not be used to accept new connections. The original listening socket $socket, how-
ever, remains open and may be reused.
PARAMETERS
o $socket
- A valid socket resource created with socket_create(3).
RETURN VALUES
Returns a new socket resource on success, or FALSE on error. The actual error code can be retrieved by calling socket_last_error(3). This
error code may be passed to socket_strerror(3) to get a textual explanation of the error.
SEE ALSO socket_connect(3), socket_listen(3), socket_create(3), socket_bind(3), socket_strerror(3).
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