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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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Running transient distributed Erlang nodes can generate a large number
of informational messages to syslog. Modify epmd to log the startup
message only when passed the debug switch.
Reported-By: Sergey Samokhin
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Check errno if either select() or accept() returns an error and exit.
This prevents epmd from looping and taking up 100% CPU.
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* bg/remove-stray-ose-support:
configure: Remove stray OSE/Delta support
Makefiles: Remove stray OSE/Delta support
kernel tests: Remove stray OSE/Delta support
system tests: Remove stray OSE/Delta support
erl_interface tests: Remove stray OSE/Delta support
epmd: Remove stray OSE/Delta support
epmd: #ifdef out start_epmd() for other platforms than VxWorks
emulator tests: Remove stray OSE/Delta support
emulator: Remove stray OSE/Delta support
emulator: Eliminate #ifdef for sys_tty_reset()
test_server: Remove stray support for OSE/Delta
OTP-8585 bg/remove-stray-ose-support
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There is no reason to define a function that is never used.
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Modify IPv6 variants of SET_ADDR_LOOPBACK and SET_ADDR_ANY to use
in6addr_loopback and in6addr_any.
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* kj/epmd-port2resp-trunc-extra:
Handle "extra" field according to specs in ALIVE2_REQ and PORT2_RESP.
OTP-8361 EPMD now correctly handles the extra data field which can be
given in the ALIVE2_REQ request and retrieved in the PORT2_RESP
response. (Thanks to Klas Johansson.)
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Don't let the length field pollute the value of the "extra" field in
ALIVE2_REQ. Extra was read, starting at the second byte of the two
byte length field, which meant that it was included in the result and
the last byte of the value was skipped:
if "extra" is <<1, 2>>, return <<0, 2, 1, 2>> not <<0, 2, 2, 1>>
Increment the offset correctly when sending PORT2_RESP, in order to
make sure the "extra" field won't be truncated:
if "extra" is <<>>, return <<0, 0>> not <<0>>
if "extra" is <<1, 2>>, return <<0, 2, 1, 2>> not <<0, 2, 1>>
Allow null characters in "extra".
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