With the argument specified as unsigned char *, Cython emits
code in the Python wrapper to convert string-like objects to
unsigned char* (essentially PyBytes_AS_STRING).
Because the len(data) call is performed on a cdef'd string-ish type,
Cython emits a strlen() call, on the result of PyBytes_AS_STRING.
This is not correct, since embedded null bytes are entirely possible.
Incidentally, the code generated by Cython was also not correct,
since the Clang Static Analyzer found a path of execution where
passing arguments in a weird way from Python resulted in strlen(NULL).
Formulated like this, Cython emits essentially:
c_buzhash(
PyBytes_AS_STRING(data),
PyObject_Length(data),
...
)
which is correct.
(cherry picked from commit faf2d0b537)
if we always give stdout to extract_item(), it gets into the stdout-
processing branch which only emits data from items that have chunks
and does nothing for items which don't.
(cherry picked from commit 0b00c14c27)
attic.tar.gz contains a repo + corresponding keyfile - all the
upgrader module tests need.
.tar.gz because the .tar was 20x bigger.
(cherry picked from commit fed5873e29)
Changed from 20. December to 19. December for easier comprehension (viewing the calendar.)
The missing 'd' at 20. December is hardly noticeable compared to e.g. the 19. December.
(cherry picked from commit 88e937d0f9)
the cygwin issue that caused these tests to break was fixed in cygwin
at least since cygwin 2.8.0 (maybe even since 2.7.0).
also added a comment to our workaround (os_write wrapper, that is needed
still for people running older cygwin versions) that it can be removed
when cygwin 2.8.0 is considered ancient (and everybody has upgraded to
some fixed version).
(cherry picked from commit 4766d66875)
This should allow us to make sure older borg versions can be cleanly
prevented from doing operations that are no longer safe because of
repository format evolution. This allows more fine grained control than
just incrementing the manifest version. So for example a change that
still allows new archives to be created but would corrupt the repository
when an old version tries to delete an archive or check the repository
would add the new feature to the check and delete set but leave it out
of the write set.
This is somewhat inspired by ext{2,3,4} which uses sets for
compat (everything except fsck), ro-compat (may only be accessed
read-only by older versions) and features (refuse all access).
and want it is not used for (deduplication).
also say already in the readme that we use a cryptohash
for dedupe, so people don't worry.
(cherry picked from commit bf69b049e9)
