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When cleaning up after an error in process_unix_exec, the stdin
pipe was being double closed instead of closing both the stdin
and stdout pipes. This occurred in two places.
Signed-off-by: Kris Katterjohn <katterjohn@gmail.com>
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NOTE: This commit breaks the build, because there was a mistake in an
earlier change of exactly the sort that this is meant to detect! I'm
leaving it broken for illustration.
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Test exactly what the geometric sampler returns, because that's what
the downstream callers of it are going to use.
While here, also assert that the geometric sampler returns a positive
integer. (Our geometric distribution is the one suported on {1, 2,
3, ...} that returns the number of trials before the first success,
not the one supported on {0, 1, 2, ...} that returns the number of
failures before the first success.)
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See https://github.com/torproject/tor/pull/624#discussion_r246453777
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Prior to this commit, the testsuite was failing on OpenBSD. After
this commit the testsuite runs fine on OpenBSD.
It was previously decided to test for the OpenBSD macro (rather than
__OpenBSD__, etc.) because OpenBSD forks seem to have the former
macro defined. sys/param.h must be included for the OpenBSD macro
definition; however, many files tested for the OpenBSD macro without
having this header included.
This commit includes sys/param.h in the files where the OpenBSD macro
is used (and sys/param.h is not already included), and it also
changes some instances of the __OpenBSD__ macro to OpenBSD.
See commit 27df23abb675ffeb198bf0c1cc85c4baed77a988 which changed
everything to use OpenBSD instead of __OpenBSD__ or OPENBSD. See
also tickets #6982 and #20980 (the latter ticket is where it was
decided to use the OpenBSD macro).
Signed-off-by: Kris Katterjohn <katterjohn@gmail.com>
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Add some details about IP family support, and point to
tor_socketpair() from tor_ersatz_socketpair().
Closes ticket 29015.
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In get_local_listener used by tor_ersatz_socketpair, the address
family used when binding the IPv6 socket was AF_INET instead of
AF_INET6.
Fixes bug 28995; bugfix on 0.3.5.1-alpha.
Signed-off-by: Kris Katterjohn <katterjohn@gmail.com>
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Reported on tor-dev by Gisle Vanem. Bug not in any released Tor
(The suggested patch used _MSC_VER, but that's not how we do stuff
with autoconf. With autoconf, you detect the feature you want,
rather than trying to list all the systems that do or do not have
it.)
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Closes ticket 28851.
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Co-authored-by: Mike Perry <mikeperry-git@torproject.org>
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This project introduces the prob_distr.c subsystem which implements all the
probability distributions that WTF-PAD needs. It also adds unittests for all of
them.
Code and tests courtesy of Riastradh.
Co-authored-by: Taylor R Campbell <campbell+tor@mumble.net>
Co-authored-by: Mike Perry <mikeperry-git@torproject.org>
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Co-authored-by: George Kadianakis <desnacked@riseup.net>
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We need this for padding negotiation so that we can have later machine
revisions supercede earlier ones.
Co-authored-by: George Kadianakis <desnacked@riseup.net>
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This patch makes the process module use the subsystem list for
initializing and shutting down.
See: https://bugs.torproject.org/28847
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Part of ticket 27167.
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This allows other libraries to include process.h without including
the smartlist_t headers first.
See: https://bugs.torproject.org/28847
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Let's not use log_warn() when a pipe is closed under what should be
considered normal conditions.
See: https://bugs.torproject.org/28179
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This patch changes the CancelIoEx() example code to use CancelIo(),
which is available for older versions of Windows too. I still think the
kernel handles this nicely by sending broken pipes if either side
closes the pipe while I/O operations are pending.
See: https://bugs.torproject.org/28179
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Handle `ERROR_BROKEN_PIPE` from ReadFileEx() and WriteFileEx() in
process_win32_stdin_write_done() and
process_win32_handle_read_completion() instead of in the early handler.
This most importantmly makes sure that `reached_eof` is set to true when
these errors appears.
See: https://bugs.torproject.org/28179
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This patch adds some missing calls to set `reached_eof` of our handles
when various error conditions happens or when we close our handle (which
happens at `process_terminate()`.
See: https://bugs.torproject.org/28179
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This patch adds some additional error checking after calls to
ReadFileEx() and WriteFileEx(). I have not managed to get this code to
reach the branch where `error_code` is NOT `ERROR_SUCCESS`, but MSDN
says one should check for this condition so we do so just to be safe.
See: https://bugs.torproject.org/28179
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This patch makes us delay checking for whether we have an exit code
value (via GetExitCodeProcess()) until both stdout and stderr have been
closed by the operating system either by the process itself or by
process cleanup after termination.
See: https://bugs.torproject.org/28179
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This prevents us from leaking the HANDLE for stdout, stderr, and stdin.
See: https://bugs.torproject.org/28179
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This patch makes sure that we terminate the event loop from the event
loop timer instead of directly in the process' exit handler. This allows
us to run the event loop an additional time to ensure that the SleepEx()
call on Windows is called and the data from stdout/stderr is delivered
to us.
Additionally we ensure that we don't try to read or write data from a
Unix process that have been terminated in the main loop, since its file
descriptors are closed at that time.
See: https://bugs.torproject.org/28179
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