Age | Commit message (Collapse) | Author |
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In the following (rare) case down node will be always registered in epmd:
- client connects to epmd and sends ALIVE2 request
- epmd reads this request and starts to process it
- during that time client socket closes in such way that subsequent
write(2) in epmd will result in error
- at this point we have node that was registered in database, but as
the connection struct has no 'keep' flag set, the do_read() closes
connection and removes it from select fdset - and so there is no way
for this node to be cleaned up later.
We've seen several epmd instances in such state on our production
systems. And while I'm not sure what was the exact sequence of events
that leads to failed write(2), issue could be easily reproduced using
SO_LINGER option for socket.
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Since 3aa60cc `epmd -names` does not produce any output on Windows
anymore. This patch uses fwrite() instead of write() which adds the
necessary carriage returns to the output so that it is suitable for the
Windows cmd.exe.
A test case is added (fails on Windows without the patch).
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OTP-10106
OTP-10107
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* hw/call-chmod-without-f:
Call chmod without the "-f" flag
Conflicts:
erts/emulator/test/Makefile
lib/asn1/test/Makefile
lib/crypto/test/Makefile
lib/debugger/test/Makefile
lib/docbuilder/test/Makefile
lib/edoc/test/Makefile
lib/erl_interface/test/Makefile
lib/inviso/test/Makefile
lib/parsetools/test/Makefile
lib/percept/test/Makefile
lib/ssl/test/Makefile
lib/syntax_tools/test/Makefile
lib/test_server/test/Makefile
lib/tools/test/Makefile
OTP-9170
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"-f" is a non-standard chmod option which at least SGI IRIX and HP UX do
not support. As the only effect of the "-f" flag is to suppress warning
messages, it can be safely omitted.
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Use erts_(v)snprintf to ensure no buffer overruns in debug printouts.
Disallow everything except port and name requests from remote nodes.
Disallow kill command even from localhost if alive nodes exist.
-relaxed_command_check when starting epmd returns the possibility to
kill this epmd when nodes are alive (from localhost).
Disallow stop command completely except if -relaxed_command_check is given
when epmd was started.
Environment variable ERL_EPMD_RELAXED_COMMAND_CHECK can be set to always get
-relaxed_command_check.
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* bg/avoid-etop-in-include:
epmd tests: fix build of test suites on Windows
system test: fix build of test suites on Windows
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On Windows, the ERL_TOP environment variable contains
a path that only is valid for cygwin-enabled programs,
such as 'make'. It is not meaningful to pass the value
of $ERL_TOP in the -I option to the Erlang compiler,
because the Erlang emulator does not interpret cygwin
paths correctly. Therefore, -include("test_server.hrl")
will fail to find test_server.hrl.
Work around the problem by creating an Emakefile and
let ts:run() take care of the build (ts:run() will
set up the include path so that test_server.hrl can
be found).
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