32-bit conn->want flags been left to be ABI compatible to 3.10,
even though the so version was changed.
The more recent way is to use fuse_set_feature_flag(),
which will use conn->want_ext.
Given that we now have two flags (want and want_ext), we need
to convert and that brought several issues
- If the application sets conn->want, that needs to be set into
the lower 32 bit of conn->want_ext. As the application might
actually unset values, it really has to be a copy and not
just 'or' - fixed now.
- convert_to_conn_want_ext() actually needs to check for
_modified_ conn->want and conn->want_ext
- convert_to_conn_want_ext() must consider being called from
high and lowlevel interfact, with different want_ext_default
and want_default values. It is only a failure, if the application
changed both, conn->want and conn->want_ext. This function
was failing in issue #1171, because high level fuse_fs_init()
was changing values and then lowlevel do_init() was incorrectly
failing on that.
This also adds a new test (test_want_conversion) and sets
values into example/{hello.c,hello_ll.c}
Also some more internal users of conn->want are converted to
fuse_{set,unset}_feature_flag().
Closes: https://github.com/libfuse/libfuse/issues/1171
Signed-off-by: Bernd Schubert <bernd@bsbernd.com>
The previous fields are left for ABI compatibility, although
it is not beautiful to add that complexity when we have to increase
the so-version as we had ABI breakage anyway.
example/printcap is simplified to use an array, as every line would
have needed to be modified anyway. Missing 'FUSE_CAP_PASSTHROUGH'
was added.
Signed-off-by: Bernd Schubert <bernd@bsbernd.com>
This test could fail whenever a something (kernel, userspace) decides
to flush in between of two 2048B writes. These two writes are supposed
to be merged into a single 4906 byte write by the kernel writeback cache,
but _sometimes_ the test fails because 2048 byte writes get through.
Fixes#882
Solution here is a modification how the test works - instead
of requiring an exact aggregation of 2x2048B into 4096B,
it now writes 64x2048B and requires in write-back modes
the number of received writes requests is lower than 64 - we
can expect that at least some writes get aggregated, but we do
know how many.
Co-authored-by: Bernd Schubert <bschubert@ddn.com>
This addresses: https://github.com/libfuse/libfuse/issues/724
HAVE_LIBC_VERSIONED_SYMBOLS configures the library if to use
versioned symbols and is set at meson configuration time.
External filesystems (the main target, actually)
include fuse headers and the preprocessor
then acts on HAVE_LIBC_VERSIONED_SYMBOLS. Problem was now that
'config.h' was not distributed with libfuse and so
HAVE_LIBC_VERSIONED_SYMBOLS was never defined with external
tools and the preprocessor did the wrong decision.
This commit also increases the the minimal meson version,
as this depends on meson feature only available in 0.50
<quote 'meson' >
WARNING: Project specifies a minimum meson_
version '>= 0.42' but uses features which were added
in newer versions:
* 0.50.0: {'install arg in configure_file'}
</quote>
Additionally the config file has been renamed to "fuse_config.h"
to avoid clashes - 'config.h' is not very specific.
Simulate write() delay and verify that close(rofd) does not
block waiting on pending writes.
The support for the flag was added in kernel v5.16-rc1.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
IN a bunch of comments we say 'under the terms of the GNU GPL', make
it clear this is GPLv2 (as LICENSE says).
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Instead of using command line options to modify struct fuse_conn_info
before and after calling the init() handler, we now give the file system
explicit control over this.
Bernd Schubert