Junio C Hamano <gits...@pobox.com> writes:
> Matthieu Moy <matthieu....@grenoble-inp.fr> writes:
>
>> Junio C Hamano <gits...@pobox.com> writes:
>>
>>> in compat/broken-unlink.c and something like this
>>>
>>> #ifdef BROKEN_UNLINK
>>> #define unlink(x) workaround_broken_unlink(x)
>>> #endif
>>>
>>> in git-compat-util.h instead?
>>
>> That means we have to know BROKEN_UNLINK at compile-time. I had never
>> heard about AFP before this thread, but they seem mountable on Linux and
>> Windows. I don't know whether these platforms will have the same issue,
>> but I suspect they will (if the server rejects the unlink).
>>
>> So, if my suspicion is right, we'd have to activate it on any platform
>> able to mount AFP, i.e. essentially everywhere.
>
> Sigh.
That is "Sigh. It is unfortunate but you are correct.".
Perhaps we would need to do something ugly like this:
* add "core.brokenUnlink" configuration (or whatever we end up
calling this filesystem trait) and add "int broken_unlink" in
environment.c (declare it in cache.h).
* in init-db.c, autoprobe by doing something like this:
create a test file with 0444 permission bits;
if (unlink(that test file)) {
chmod(that test file, 0644);
if (!unlink(that test file)) {
broken_unlink = 1;
git_config_set("core.brokenunlink", broken_unlink);
} else {
die("aaargh");
}
}
* Do your unlink_or_chmod() thing in wrapper.c, but perhaps call it
xunlink(), like this:
int xunlink(...) {
int ret = unlink(...);
if (broken_unlink && ret) {
chmod(..., 0644);
ret = unlink(...);
}
return ret;
}
We probably need something similar for xrename()?
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