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annotate misc/systemd/socket-activation.lua @ 3739:1ed3d86eeaed

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mod_bookmarks2: Don’t purge or remove inexistant items when synchronising existing Private XML data.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Wed, 13 Nov 2019 16:25:21 +0100
parents 3296a09b4e57
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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1 -- Monkeypatch to support socket activation
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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2 --
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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3 -- Requires LuaSocket after "agnostic" changes merged
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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4 --
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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5 -- To enable:
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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6 -- RunScript "socket-activation.lua"
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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7
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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8 local socket = require"socket";
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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9 local tcp_serv_mt = debug.getregistry()["tcp{server}"];
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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10 local socket_bind = socket.bind;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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11
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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12 local SD_LISTEN_FDS_START = 3;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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13
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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14 local fds = tonumber(os.getenv"LISTEN_FDS") or 0;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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15
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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16 if fds < SD_LISTEN_FDS_START then return; end
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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17
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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18 local servs = {};
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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19
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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20 for i = 1, fds do
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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21 local serv = socket.tcp();
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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22 if serv:getfd() >= 0 then
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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23 return; -- This won't work, we will leak the old FD
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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24 end
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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25 debug.setmetatable(serv, tcp_serv_mt);
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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26 serv:setfd(SD_LISTEN_FDS_START + i - 1);
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27 local ip, port = serv:getsockname();
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28 servs [ ip .. ":" .. port ] = serv;
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29 end
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30
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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31 function socket.bind( ip, port, backlog )
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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32 local sock = servs [ ip .. ":" .. port ];
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33 if sock then
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34 servs [ ip .. ":" .. port ] = nil;
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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35 return sock;
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36 end
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Kim Alvefur <zash@zash.se>
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37 if next(servs) == nil then
3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
Kim Alvefur <zash@zash.se>
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38 -- my work here is done
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39 socket.bind = socket_bind;
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40 end
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41 return socket_bind( ip, port, backlog );
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42 end