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Signed-off-by: Bernd Schubert <bernd@bsbernd.com>
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Signed-off-by: Bernd Schubert <bernd@bsbernd.com>
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Update ChangeLog.rst and AUTHORS
Signed-off-by: Bernd Schubert <bschubert@ddn.com>
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Signed-off-by: Bernd Schubert <bernd@bsbernd.com>
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Read/writes IOs should be page aligned as fuse server
might need to copy data to another buffer otherwise in
order to fulfill network or device storage requirements.
Simple reproducer is example/passthrough*
and opening a file with O_DIRECT - without this change
writing to that file failed with -EINVAL if the underlying
file system was using ext4 (for passthrough_hp the
'passthrough' feature has to be disabled).
The mis-alignment from fuse kernel is not ideal, but we can handle
it by allocation one page more than needed and then using a buffer
that is set up to compensate for kernel misalignment.
This also only set se->buf_reallocable to true when called
by a libfuse internal caller - we do not know what
external callers are doing with the buffer - update to
commit 0e0f43b79b9b
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I see random ENOTCONN failures in xfstest generic/013 and generic/014
in my branch, but earliest on the 2nd run - takes ~12hours to get
the issue, but then there are no further information logged.
ENOTCONN points to a daemon crash - I need backtraces and a core dump.
This adds optional handling of fatal signals to print a core dump
and optional syslog logging with these new public functions:
fuse_set_fail_signal_handlers()
In addition to the existing fuse_set_signal_handlers(). This is not
enabled together with fuse_set_signal_handlers(), as it is change
in behavior and file systems might already have their own fatal
handlers.
fuse_log_enable_syslog
Print logs to syslog instead of stderr
fuse_log_close_syslog
Close syslog (for now just does closelog())
Code in fuse_signals.c is also updated, to be an array of signals,
and setting signal handlers is now down with a for-loop instead
of one hand coded set_one_signal_handler() per signal.
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* Pass cache_readdir and keep_cache from high level API
* Update ChangeLog.rst
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The io for FUSE requests and responses can now be further customized by allowing to write custom functions for reading/writing the responses. This includes overriding the splice io.
The reason for this addition is that having a custom file descriptor is not sufficient to allow custom io. Different types of file descriptor require different mechanisms of io interaction. For example, some file descriptor communication has boundaries (SOCK_DGRAM, EOF, etc...), while other types of fd:s might be unbounded (SOCK_STREAMS, ...). For unbounded communication, you have to read the header of the FUSE request first, and then read the remaining packet data. Furthermore, the one read call does not necessarily return all the data expected, requiring further
calls in a loop.
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Update the change log file with the summary of API changes related
to the 'max_threads' changes.
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When returning a negative error code by ->ioctl() to the high level
interface, no error is propagated to the low level, and the reply
message to the kernel is shown as successful.
A negative result is however returned to kernel, so the kernel can
detect the bad condition, but this appears to not be the case since
kernel 5.15.
The proposed fix is more in line with the usual processing of errors
in fuse, taking into account that ioctl(2) always returns a non-negative
value in the absence of errors.
Co-authored-by: Jean-Pierre André <jpandre@users.sourceforge.net>
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This makes the file more readable with syntax highlighting.
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Allow requesting from kernel to avoid flush on close at file open
time. If kernel does not support FOPEN_NOFLUSH flag, the request
will be ignored.
For passthrough_hp example, request to avoid flush on close when
writeback cache is disabled and file is opened O_RDONLY.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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When not using the readdir_plus mode, the d_type was not returned,
and the use_ino flag was not used for returning d_ino.
This patch fixes the returned values for d_ino and d_type by readdir(3)
The test for the returned value of d_ino has been adjusted to also
take the d_type into consideration and to check the returned values in
both basic readdir and readdir_plus modes. This is done by executing
the passthrough test twice.
Co-authored-by: Jean-Pierre André <jpandre@users.sourceforge.net>
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- Test added for all passthrough examples.
- passthrough.c uses offset==0 mode. The others don't.
- passthrough.c changed to set FUSE_FILL_DIR_PLUS to make the test pass.
- This fixes #583.
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Commit 0bef21e8543d removed "-o nonempty" since mounting over
non-empty directories is always allowed. But this broke tools which
specify "-o nonempty". Since the expected behaviour is the same
anyway, ignoring the "nonempty" option seems safe, and allows programs
specifying "-o nonempty" to continue working with fusermount3.
This would fix https://bugs.debian.org/939767
Signed-off-by: Stephen Kitt <steve@sk2.org>
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It should be 2020 rather than 2010. Thanks.
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This commit defines a new capability called `FUSE_CAP_CACHE_SYMLINKS`.
It is off by default but you can now enable it by setting this flag in
in the `want` field of the `fuse_conn_info` structure.
When enabled, the kernel will save symlinks in its page cache,
by making use of the feature introduced in kernel 4.20:
https://github.com/torvalds/linux/commit/5571f1e65486be025f73fa6aa30fb03725d362a2
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Last two changes were not part of the released version.
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Fixes #467.
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Define FUSE_USE_VERSION < 35 to get old ioctl prototype
with int commands; define FUSE_USE_VERSION >= 35 to get
new ioctl prototype with unsigned int commands.
Fixes #463.
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