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.TH logd 8 "October 2006" "Upstart"
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logd \- job output logging daemon
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\fBlogd\fR [\fIOPTION\fR]...
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to receive the output of jobs with
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in their job definition, which is the default if no other
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Output is timestamped and written, with the job name, to
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or stored in memory until the file is writable.
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Detaches from the terminal and runs in the background.
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To eliminate race conditions on startup, such as not being ready to receive
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connections when the first job is started, the following procedure is used.
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Once ready to receive connections,
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signal, putting itself to sleep until continued by another process.
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waits for the process to stop if it hasn't already, and then sends it the
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signal so that it can proceed. Only once this has happened, will
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option is given, this is not performed; instead
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will not detach from the console until it is listening on the socket.
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stream socket in the abstract namespace, bound to
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.IR /com/ubuntu/upstart/logd .
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opens a new connection for each job that is to be logged, binding the
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socket to the standard input, output and error file descriptors for the job.
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Before running the job, it sends the job name on the socket so that it can be
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logged along with the messages. This is sent as a
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that contains the length of the name to read, followed by that many
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character bytes. The NULL terminator is not sent as part of the protocol,
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it is up to the receiver to add that if required.
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Further information about the job, such as its description, can be obtained
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by opening an ordinary connection to the
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daemon and querying it using the name received.
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Written by Scott James Remnant.
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Report bugs at https://launchpad.net/products/upstart/+bugs
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Copyright \(co 2006 Canonical Ltd.
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This is free software; see the source for copying conditions. There is NO
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warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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logd/man/logd.8
