37 lines
962 B
Ruby
37 lines
962 B
Ruby
# currently empty
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module Process
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# call-seq:
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# Process.daemon() => 0
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# Process.daemon(nochdir=nil,noclose=nil) => 0
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#
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# Detach the process from controlling terminal and run in
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# the background as system daemon. Unless the argument
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# nochdir is true (i.e. non false), it changes the current
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# working directory to the root ("/"). Unless the argument
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# noclose is true, daemon() will redirect standard input,
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# standard output and standard error to /dev/null.
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# Return zero on success, or raise one of Errno::*.
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def self.daemon(nochdir = nil, noclose = nil)
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if $SAFE >= 2
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raise SecurityError, "Insecure operation `%s' at level %d", __method__, $SAFE
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end
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fork && exit!(0)
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Process.setsid()
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fork && exit!(0)
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Dir.chdir('/') unless nochdir
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File.open('/dev/null', 'r+') { |f|
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STDIN.reopen(f)
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STDOUT.reopen(f)
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STDERR.reopen(f)
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} unless noclose
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return 0
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end
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end
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