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55 lines
1.6 KiB
Lua
55 lines
1.6 KiB
Lua
-- example of how to run the ls command
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-- and pipe its output to the http user
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local unix = require "unix"
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function main()
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if GetHostOs() == 'WINDOWS' then
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cmd = 'dir'
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else
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cmd = 'ls'
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end
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ls = assert(unix.commandv(cmd))
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reader, writer = assert(unix.pipe(unix.O_CLOEXEC))
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oldint = assert(unix.sigaction(unix.SIGINT, unix.SIG_IGN))
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oldquit = assert(unix.sigaction(unix.SIGQUIT, unix.SIG_IGN))
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oldmask = assert(unix.sigprocmask(unix.SIG_BLOCK, unix.Sigset(unix.SIGCHLD)))
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child = assert(unix.fork())
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if child == 0 then
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unix.close(0)
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unix.open("/dev/null", unix.O_RDONLY)
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unix.close(1)
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unix.dup(writer)
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unix.close(2)
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unix.open("/dev/null", unix.O_RDONLY)
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unix.sigaction(unix.SIGINT, oldint)
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unix.sigaction(unix.SIGQUIT, oldquit)
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unix.sigprocmask(unix.SIG_SETMASK, oldmask)
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unix.execve(ls, {ls, '-Shal'})
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unix.exit(127)
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else
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unix.close(writer)
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SetStatus(200)
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SetHeader('Content-Type', 'text/plain')
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while true do
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data, err = unix.read(reader)
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if data then
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if data ~= '' then
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Write(data)
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else
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break
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end
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elseif err:errno() ~= unix.EINTR then
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Log(kLogWarn, 'read() failed: %s' % {tostring(err)})
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break
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end
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end
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unix.close(reader)
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Log(kLogWarn, 'wait() begin')
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unix.wait(-1)
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Log(kLogWarn, 'wait() end')
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unix.sigaction(unix.SIGINT, oldint)
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unix.sigaction(unix.SIGQUIT, oldquit)
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unix.sigprocmask(unix.SIG_SETMASK, oldmask)
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return
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end
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end
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main()
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