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mod_posix: Truncate the pidfile before writing to ensure that we never overwrite with a PID shorter than the previous, and end with an invalid PID in the file.

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This commit is contained in:
Brian Cully 2010-07-09 01:16:09 +01:00
parent ed0cef7718
commit d77e181372
1 changed files with 5 additions and 0 deletions
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5
plugins/mod_posix.lua
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@ -95,6 +95,11 @@ local function write_pidfile()
pidfile_handle = nil;
prosody.shutdown("Prosody already running");
else
pidfile_handle, err = io.open(pidfile, "w+");
if not pidfile_handle then
module:log("error", "Couldn't write pidfile at %s; %s", pidfile, err);
prosody.shutdown("Couldn't write pidfile");
end
pidfile_handle:write(tostring(pposix.getpid()));
pidfile_handle:flush();
end