this doesn't really fix anything under current conditions, as so far
only Maildir driver functions that modify known messages can cause
concurrent expunges to be detected, and we don't call any of these
before the so far unchecked loops.
so far, we checked for M_DEAD only in loops over messages. but we should
have checked srec->msg uses as well. this would make the code a mess, so
instead call back from the drivers when messages are expunged, so we can
reset the pointers.
the only case where this really matters so far is the flag setting loop,
which may cause the concurrent expunge of not yet handled messages to be
detected by the maildir driver.
all printing of auxiliary callback arguments must be conditional on the
command having actually succeeded. this affected fetch_msg() most, which
outright crashed due to a null pointer deref.
to fix this for good, we automate the generation of the status printing
and checking. as a side effect, this fixes the fetch_msg() callback not
printing the status at all.
amends 4cc5ad5a.
this tests only the common case of the far side being async - adding
100% instead of 50% to the runtime of the test to cover a corner case
didn't seem worth it.
instead of delaying the callback, delay the actual driver call. this is
in line with how the IMAP driver would behave, as since commit 6c08f568
it queues the socket writes (the network upstream latency goes on top,
but that doesn't alter the result).
amends 4423a932.
- print on which side we're upgrading a placeholder. as a side effect,
this moves some magic out of upgrade_srec().
- don't use past tense for something that is only about to happen
- don't print status of every sync entry affected by journal replay -
the entry load already prints it, and relevant operations print the
new status. also, it was inconsistent with not printing the entry's
old flags.
wrap make_flags() into fmt_flags() which returns a (struct-wrapped)
string, so the calls can be inlined into the printf statements, without
reserving buffers.
we locally force optimization, so copy elision is always done, as debug
builds would otherwise suffer a somewhat unreasonable performance hit.
we optimized the case where the string would be equal even without
upper-casing, but for the much more common case where the strings differ
even after upper-casing, this was just an additional conditional.
we used to pass all initially loaded messages to match_tuids(), which
could be quite some when syncing old messages. as lost TUIDs result in
O(n^2) behavior, this could have a serious performance impact.
this is meant primarily for use with a redirected output, where no
progress counters are shown. but it would be weird not to have it with
tty output as well, so it replaces the counters after completion.
REFMAIL: 87bl2cgt6u.fsf@curie.anarc.at
speak more accurately of redundancy, not conflict. these are fatal
errors at all only because the user likely meant something else than
they typed, so we force them to think again.
this moves the channel iteration & synchronization code from main(),
with all its dependencies.
then it is "re-threaded" to be more directly driven by the driver
callbacks (like sync_boxes() is), rather than being a weird state
machine.
while the code is moved, localize many variables, and use an enum
instead of #defines for the states.
it makes no sense to trash the placeholders, and in fact the common
case is that they are deleted due to being replaced by the full
message.
a separate S_PURGED state needed to be added, as S_PURGE needs to be
reset after setting F_DELETED (so the operation doesn't count as still
pending after journal replay), yet trashing needs an indicator. logging
is now done via a separate command, as piggy-backing it on flag updates
just makes things less legible for no benefit.
this is mostly academical, as trashing being done on the side where
placeholders reside is rather unlikely.
... as otherwise these messages would be just lost.
the assumption is that opposite-side trashing is used only for locally
generated messages whose size we control. it's also more consistent with
same-side trashing, where even oversized messages would be trashed.
the exclusion was broken anyway, as we failed to query the size of old
messages, particularly after 70bad661.
messages for which only a placeholder was propagated should be treated
as not propagated, as otherwise the actual contents will be lost when
only not propagated messages are trashed.
amends 70bad661.
this is a lot more legible, and makes it possible to insert values in
the middle without churn.
i didn't find a way to do this with the pre-processor, so we now have
another code generator.
we now use the $< make variable, which requires gmake on netbsd < 9.0,
and possibly other systems with an ancient make.
this makes config+data file "sets" relocatable, which is useful for
testing.
this is technically a gratuitous backwards incompatible behavior
change, but to the degree that anyone uses relative paths at all, they
almost certainly rely on PWD being set up such that they won't see a
difference.
there are fallbacks to the old locations for compatibility.
the new locations use "isync" instead of "mbsync", which is preparation
for renaming the executable back in v1.6.
