s6
Software
skarnet.org

The s6-fdholder-deletec program

s6-fdholder-deletec talks to a fd-holding daemon on its open descriptors 6 and 7, and tells it to close a file descriptor it's currently holding.

Interface

     s6-fdholder-deletec [ -t timeout ] id

• s6-fdholder-deletec expects to talk to a listening s6-fdholderd program on its descriptors 6 and 7.
• It tells the server to close the file descriptor that has been stored with identifier id.
• It then exits 0, or 1 if the server returned an error.

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.

Notes

• s6-fdholder-deletec is the "internal" version of s6-fdholder-delete. It simply expects to be run as a UCSPI client, i.e. talking to the server over descriptors 6 and 7, instead of connecting to the server itself.
• The error messages for the s6-fdholder suite are explained here.