Add support to store and retrieve file descriptors in the service manager #2
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Adds the bindings for sd_pid_notify_with_fds and sd_listen_fds_with_names
functions.
notify_with_fds
method can send a file descriptor with a name toservice manager to store and to pass it to the main process again on next
invocation.
sample use:
listen_fds_with_names
method checks if there are any file descriptorspassed and if there are, it returns a hash with their names as keys and
their descriptors as values.
sample use:
For more details you can check sd_notify(3) and sd_listen_fds(3).