s6
Software
skarnet.org

The s6-fdholder-delete program

s6-fdholder-delete connects to a fd-holding daemon listening on a Unix domain socket, and deletes a file descriptor from the daemon storage.

Interface

     s6-fdholder-delete [ -t timeout ] path id

• s6-fdholder-delete executes into s6-ipcclient path s6-fdholder-deletec id . It does nothing else: it is just a convenience program. The s6-ipcclient program connects to a Unix socket at path, and the s6-fdholder-deletec program sends instruction to the server.
• It should be used to connect to a s6-fdholderd daemon, which will receive the instruction to close and remove the file descriptor identified by id.
• It then exits 0.

Options

• -t timeout : if the operation cannot be processed in timeout milliseconds, then fail with an error message. Communications with the server should be near-instant, so this option is only here to protect users against programming errors (connecting to the wrong socket, for instance).

Usage example

   s6-fdholder-delete /service/fdholderd/s MYSOCKET

will tell a s6-fdholderd daemon listening on the /service/fdholderd/s socket to close the filedescriptor identified as MYSOCKET.