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generic/003 fails currently because if you specify -o relatime we will
fail to mount, but not return an error, so the test thinks that we
support relatime and then hilarity ensues. Set ret so that if we get
any failures while trying to mount we will properly error out.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
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We need to test w/o page cache, w/o passthrough and other options.
I.e. we need to have the possibility to add these options via
local.config
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Atomic struct fuse_req::ref_cnt
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ref_cnt should make the intention of this variable more clear.
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The variable is not modified exclusively with locks since commit
cef8c8b24902 ("Add support for no_interrupt") anymore.
That commit is safe, but might be error prone to future updates.
Changing it to a C11 _Atomic should avoid issues.
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The function fuse_session_process_buf_int() would do much things
for FUSE_INTERRUPT requests, even there are no FUSE_INTERRUPT requests:
1. check every non-FUSE_INTERRUPT request and add these requests to the
linked list(se->list) under a big lock(se->lock).
2. the function fuse_free_req() frees every request and remove them from
the linked list(se->list) under a bing lock(se->lock).
These operations are not meaningful when there are no FUSE_INTERRUPT requests,
and have a great impact on the performance of fuse filesystem because the big
lock for each request.
In some cases, FUSE_INTERRUPT requests are infrequent, even none at all.
Besides, the user-defined filesystem may do nothing for FUSE_INTERRUPT requests.
And the kernel side has the option "no_interrupt" in struct fuse_conn. This kernel option
can be enabled by return ENOSYS in libfuse for the reply of FUSE_INTERRUPT request.
But I don't find the code to enable the "no_interrupt" kernel option in libfuse.
So add the no_interrupt support, and when this operaion is enabled:
1. remove the useless locking operaions and list operations.
2. return ENOSYS for the reply of FUSE_INTERRUPT request to inform the kernel to disable
FUSE_INTERRUPT request.
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Fixes: 73cd124d0408 ("Add clone_fd to custom IO (#927)")
Signed-off-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
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compat.c is supposed to be standalone to provide compat ABI symbols.
Including fuse header files can cause conflicts - just the opposite
of what compat.c was made for.
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This is direct copy of <linux>/.clang-format as
this project was initiated with linux style. Some
lines that were auto-generated are removed
("# Taken from:...).
Some files like example/passthrough_hp.cc use
a different style - these files probably should
be cleaned up when major changes are done to them.
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updated-dependencies:
- dependency-name: actions/checkout
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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Add support for filesystem passthrough read/write of files.
When the FUSE_PASSTHROUGH capability is enabled, the FUSE server may
decide, while handling the "open" or "create" requests, if the given
file can be accessed by that process in "passthrough" mode, meaning that
all the further read and write operations would be forwarded by the
kernel directly to the backing file rather than to the FUSE server.
All requests other than read or write are still handled by the server.
This allows for an improved performance on reads and writes, especially
in the case of reads at random offsets, for which no (readahead)
caching mechanism would help, reducing the performance gap between FUSE
and native filesystem access.
Extend also the passthrough_hp example with the new passthrough feature.
This example opens a kernel backing file per FUSE inode on the first
FUSE file open of that inode and closes the backing file on the release
of the last FUSE file on that inode.
All opens of the same inode passthrough to the same backing file.
A combination of fi->direct_io and fi->passthrough is allowed.
It means that read/write operations go directly to the server, but mmap
is done on the backing file.
This allows to open some fds of the inode in passthrough mode and some
fd of the same inode in direct_io/passthrough_mmap mode.
Signed-off-by: Alessio Balsini <balsini@android.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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The API stays the same, the libfuse version comes from
inlined functions, which are defined fuse_lowlevel.h
and fuse.h. As these inlined functions are defined in the header
files they get added into the application, similar as if these
were preprocessor macros.
Macro vs inlined function is then just a style issue - I personally
prefer the latter.
fuse_session_new() -> static inlinei, in the application
_fuse_session_new -> inside of libfuse
fuse_new() -> static inline, in the application
_fuse_new() -> inside of libfuse
Note: Entirely untested is the fuse 30 api - we need a test
for it. And we do not have any ABI tests at all.
Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>
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If the file system doesn't provide a ->open or an ->opendir, and the
kernel supports FUSE_CAP_NO_OPEN_SUPPORT or FUSE_CAP_NO_OPENDIR_SUPPORT,
allow the implementation to set FUSE_CAP_NO_OPEN*_SUPPORT on conn->want
in order to automatically get this behavior. Expand the documentation
to be more explicit about the behavior of libfuse in the different cases
WRT this capability.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
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Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.4 to 4.1.5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/0ad4b8fadaa221de15dcec353f45205ec38ea70b...44c2b7a8a4ea60a981eaca3cf939b5f4305c123b)
---
updated-dependencies:
- dependency-name: actions/checkout
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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_Static_assert() is an ISO C11 feature. Make the check more
standard-conformant so that the compiler won't give pedantic warnings.
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All credits to Miklos Szeredi <miklos@szeredi.hu> for spotting
this.
Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>
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Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.3 to 4.1.4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/1d96c772d19495a3b5c517cd2bc0cb401ea0529f...0ad4b8fadaa221de15dcec353f45205ec38ea70b)
---
updated-dependencies:
- dependency-name: actions/checkout
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>
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We already have some C11 pieces like Static_assert and we are likely
going to add more - tell meson to use C11.
Plain C11 does not work as there are several language extension,
like typeof - part of C23 only. We might be able to fix/workaround
such extensions with compiler ifdef, but then I prefer gnu11 over
checking which compiler is used (example gcc has __typeof vs
clangs __typeof++). And compiler extension would also defeat pedantic.
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Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.2 to 4.1.3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/9bb56186c3b09b4f86b1c65136769dd318469633...1d96c772d19495a3b5c517cd2bc0cb401ea0529f)
---
updated-dependencies:
- dependency-name: actions/checkout
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>
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Despite the creation of the header file fuse_config.h during LibFUSE
version 3.16.2's Meson build process, the BSD mount_bsd.c file continues to reference config.h. Consequently, this discrepancy results in compilation failures.
FIX : Point the mount_bsd.c to correct header.
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* Use single place to define the version
Defining the version in fuse_common.h, is removed, it is defined
through meson and provided by "libfuse_config.h". I.e. it avoids
to define the version twice - once in meson and once in
fuse_common.h.
Ideal would be to set integers in the meson file and create the version
string from these integers. However, meson requires that "project"
is the first meson.build keyword - with that it requires to
set the version from a string and then major/minor/hotfix integers
are created from string split.
Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>
* Increase the version to 3.17.0
This is to prepare the branch for the next release.
Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>
---------
Signed-off-by: Bernd Schubert <bernd.schubert@fastmail.fm>
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Convert all the remaining users of fuse_session_loop_mt() to
the new 3.12 config api.
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By virtio-fs and libfuse fuse_custom_io, passthrough_ll could be
a virtio filesystem device backend, this bug was found when doing
mount, fsstress and umount repeatedly.
Signed-off-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
Co-authored-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
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Define a new clone_fd() helper for fuse_custom_io, users
can implement their own clone fd logic.
Signed-off-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
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If user updates conn->max_write in fuse_lowlevel_ops' init() method, do_init()
will miss the "conn.max_write > bufsize - FUSE_BUFFER_HEADER_SIZE" judgment,
and ->init method will be called after it, which obviously is a bug.
Signed-off-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
Co-authored-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
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x_mnt_opts was not initialized to 0, but strncat was done
Spotted by cppcheck running on our ddn branch.
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Add more documentation for FUSE_CAP_EXPORT_SUPPORT
Also remove the flag from passthrough_ll.c and passthrough_hp.cc
as these implementations do _not_ handle that flag. They just
cast fuse_ino_t to an inode and cause a heap buffer overflow
for unknown objects (simplest reproducer are the examples
in "man 2 open_by_handle_at", but to unmount/mount the file
system after name_to_handle_at and before open_by_handle_at).
Fixes https://github.com/libfuse/libfuse/issues/838
---------
Co-authored-by: Nikolaus Rath <Nikolaus@rath.org>
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This just adds in the basic handler, but does not
use it yet in examples.
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Commit 22741f5 accidentally re-used (1 << 27), which is
already taken for FUSE_CAP_SETXATTR_EXT.
Fortunately not part of any release yet.
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Have GitHub actions setup python on runners and install
all python dependencies via pip.
Signed-off-by: Ashley Pittman <ashley@pittman.co.uk>
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fixes #235
In fill_dir_plus(), there's a lookup for caching dirent attributes.
However, when offset = 0 the cache metadata from the lookup is lost
as only the entry attributes are passed when added to the list. Kernel
doesn't cache the attributes since .ino = 0.
This change moves the entry lookup to happen just before the relevant
fuse_add_direntry_plus() calls
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User may still need to mount same fuse filesystem after umounting
it(In this case, the userspace filesystem server needs to keep live),
and after handling FUSE_DESTROY message, new FUSE_INIT message may come,
so need to reset got_init to be zero.
Signed-off-by: Xiaoguang Wang <lege.wang@jaguarmicro.com>
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Checking for an emtpy string actually doesn't work for $@,
so just check for number of arguments.
Co-authored-by: Bernd Schubert <bschubert@ddn.com>
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In order to use the fuse_fill_dir_t function in a C++ program, add the enum item:
FUSE_FILL_DIR_DEFAULTS
Without this change g++ compilation failed with
example/hello.c:94:35: error: invalid conversion from ‘int’ to ‘fuse_fill_dir_flags’ [-fpermissive]
94 | filler(buf, ".", NULL, 0, 0);
| ^
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| int
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Similar issue as fixed in commit
3c7ba570 "examples/notify_store_retrieve: Add a clean shutdown".
Basically a clean shutdown was missing, but even with clean
shutdown it does not work, as kernel side releases inodes before
sending FUSE_DESTROY - the intervaled thread then gets
-ENOENT.
Co-authored-by: Bernd Schubert <bschubert@ddn.com>
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Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.1 to 4.1.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/b4ffde65f46336ab88eb53be808477a3936bae11...9bb56186c3b09b4f86b1c65136769dd318469633)
---
updated-dependencies:
- dependency-name: actions/checkout
dependency-type: direct:production
update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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Add back s-bit for compiled fusermount
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This reconfigure is recommended to ensure the build system
(ninja/cmake/...) get the updated meson config. They
typically do, but it depends on file time stamps - is
a potential random error source.
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Tests sometimes fail with
pytest.fail('file system process terminated prematurely')
And it is not clear what actually happens.
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It is very hard to see in github tests what is actually failing
with signals - add the gnu-libc backtrace handler.
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Commit b1cdc497 ("ci-build.sh: Run ASAN and UBSAN at the same time")
also accidentally removed the test for versioned symbols.
Also export clang/clang++ to make sure new shells get it.
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This was stalling - easier to check what happens
when it fails fast. And in general, sanitized
builds are faster than valgrind and detect almost
as much errors as valgrind (same level would be
achieved with MSAN, but that is hard to use),
so failures can be detected faster whan sanitizers
run first.
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As noticed by valgrind in issue #907 example/poll.c
triggers a use-after-free
==85200== Thread 2:
==85200== Invalid read of size 4
==85200== at 0x485E54A: send_notify_iov (fuse_lowlevel.c:2267)
==85200== by 0x485E54A: fuse_lowlevel_notify_poll (fuse_lowlevel.c:2289)
==85200== by 0x1096F2: fsel_producer (poll.c:245)
==85200== by 0x4897EA6: start_thread (pthread_create.c:477)
==85200== by 0x49ADA6E: clone (clone.S:95)
==85200== Address 0x5291d68 is 392 bytes inside a block of size 920 free'd
==85200== at 0x48399AB: free (vg_replace_malloc.c:538)
==85200== by 0x485A12C: fuse_destroy (fuse.c:5103)
==85200== by 0x486220F: fuse_main_real (helper.c:389)
==85200== by 0x1091D6: main (poll.c:288)
==85200== Block was alloc'd at
==85200== at 0x483AB65: calloc (vg_replace_malloc.c:760)
==85200== by 0x485BAA0: fuse_session_new (fuse_lowlevel.c:3036)
==85200== by 0x4859AF2: fuse_new@@FUSE_3.1 (fuse.c:4966)
==85200== by 0x4862129: fuse_main_real (helper.c:345)
==85200== by 0x1091D6: main (poll.c:288)
Issue is that the "fsel_producer" thread is still active after
fuse_destroy - it gets destructed too late.
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This is also needed by some tests and was accidentally removed
in commit aab146eea8877ee744a1b5a0da8bbbf31d14bad1
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Tests were failing because mount dir was missing.
Unclear to me why this became only recently an issue
(github internal - out of the sudden tests were hanging).
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We want to see errors - reduce allowed errors.
With --maxfail=99 tests out of the sudden started to hang
in github, without a change in libfuse (I had actually tested
to previous release tags). With --maxfail=1 pytest aborts
and we see failing github.
Also increase python log level to NOTSET - NOTSET should print
all messages.
Also use "pytest" has wrapper for "python3 -m"
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Switch from fork to posix_spawn
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As per pull #898, fusermount3 had a severe issue that
should have been detected by ASAN. I guess tests used
the system default and not the sanitized binary.
Order of execution of fusermount3 is to try
1) full install path
if that fails
2) just fusermount3
So tests should be fixed by installing libfuse, setting the s-bit
on fusermount3 and then to run the tests.
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Also set halt_on_error=1 to make UBSAN to fail if it
would find something.
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- This adds a wrapper function for the call sequence
of posix_spawn and posix_spawnp.
- Replaces perror() with fuse_log - the latter
can be redirected through the file system log function
and gives better end user friendly output
- other minor changes, like variable renames
- no functional change
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