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2025-09-16libfuse: don't put HAVE_STATX in a public headerDarrick J. Wong-1/+1
fuse.h and fuse_lowlevel.h are already forward declaring struct statx, there is no need for HAVE_STATX anymore. HAVE_STATX also bears the risk to conflict with an application define. Alternatively it would have been possible to change to HAVE_FUSE_STATX. Get rid of the conditionals in the public header files and also remove HAVE_STATX definition from the public libfuse_config.h. Edit by Bernd: Commit message and removal of HAVE_STATX from public libfuse_config.h. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Bernd Schubert <bernd@bsbernd.com>
2025-07-16Add statx supportJoanne Koong-0/+21
This commit adds libfuse support for FUSE_STATX requests on linux distributions. Currently, statx is only supported on linux. To make the interface a ergonomic as possible (eg using native 'struct statx' vs 'struct fuse_statx'), this implementation gates the 'struct statx' changes by #ifdef linux. Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
2025-07-13example/passthrough: refactor fallocateCismonX-8/+3
Move fallocate implementation to passthrough_helpers.h, so that it could be reused by multiple passthrough examples. Signed-off-by: CismonX <admin@cismon.net>
2025-06-27license: s/COPYING/GPL2.txt, s/COPYING.LIB/LGPL2.txtizxl007-1/+1
Signed-off-by: izxl007 <zeng.zheng@zte.com.cn>
2024-03-20Add FUSE_FILL_DIR_DEFAULTS enum (#903)FredyVia-1/+1
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); | ^ | | | int
2024-02-26Enable direct IO for passthrough examples when open has flag O_DIRECTyangyun-0/+8
Shared locks (parallel_direct_writes) cannot be enabled for O_DIRECT, as O_DIRECT may be set past file open time with fcntl(fd, F_SETFD, ...). Kernel side fuse has precautions for shared lock direct-IO (direct_io in libfuse), as it needs an exclusive inode lock when direct and page cache IO happend at the same time. In order to enjoy the parallel_direct_writes feature (i.e., get a shared lock, not exclusive lock) for writes to the same file), direct_io is needed. The feature direct_io is corresponding to FOPEN_DIRECT_IO in fuse kernel. FOPEN_DIRECT_IO and O_DIRECT are not entirely the same as described above. So enable direct_io (i.e., FOPEN_DIRECT_IO in fuse kernel) to enjoy parallel direct_writes. Some patches related to FOPEN_DIRECT_IO and O_DIRECT are below: https://lore.kernel.org/all/753d6823-e984-4730-a126-d66b65ea772c@ddn.com
2024-02-23passthrough_example: make parallel_direct_writes more clearlyyangyun-2/+7
Move the parallel_direct_writes enable action to the init function in high level API, it is more recommended just like commit 8ee553dac. Besides, add some comments to show that the feature parallel_direct_writes is depend on the feature direct_io (refer to kernel side patch series to consolidate direct IO, link: https://lwn.net/ml/linux-fsdevel/ 20230918150313.3845114-1-bschubert@ddn.com for the reason).
2023-10-11Enabled parallel direct IO writes for passthrough examplesBernd Schubert-0/+2
All these passthrough examples don't need writes to be serialized. Actually, most file systems probably handle non serialized parallel direct writes - the FOPEN_PARALLEL_DIRECT_WRITES flag is just to avoid a regression for those file system that rely on serialized DIO writes in fuse kernel. Passthrough file system forward the IO to another file system, which actually handles that internally - serialized in fuser kernel is not needed.
2023-01-28Install a the configure_file (config.h) and use in headersBernd Schubert-4/+0
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.
2020-03-13State GPL version in comment (#485)Dr. David Alan Gilbert-1/+1
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>
2020-01-30examples: mark ops variables constant (#496)zsugabubus-1/+1
2019-11-03Implement lseek operation (#457)Yuri Per-0/+13
2018-11-19examples: add copy_file_range() support to passthrough(_fh)Niels de Vos-0/+23
The passthrough example filesystem can be used for validating the API and the implementation in the FUSE kernel module.
2017-08-22Make passthrough_fh work under FreeBSD.Nikolaus Rath-0/+13
2017-07-08Added public fuse_lib_help(), bumped minor versionNikolaus Rath-1/+1
2017-04-07passthrough, passthrough_fh: disable attribute cachingNikolaus Rath-0/+12
Required for better hardlink handling, see comments in patch.
2016-10-28Clean-up doxygen documentationNikolaus Rath-4/+3
Fixes: #81.
2016-10-20Turn fuse_operations.nopath_flag into fuse_config.nullpath_okNikolaus Rath-0/+1
Modifying struct fuse_config in the init() handler is the canonical way to adjust file-system implementation specific settings. There is no need to have flags in struct fuse_operations.
2016-10-20fuse_new(): don't accept options that don't make sense for end-usersNikolaus Rath-0/+9
Several options (use_ino, etc) depend on the file system implementation. Allowing them to be set from the command line makes no sense.
2016-10-15Pass fuse_file_info to getattr, chown, chmod, truncate, utimens handlersNikolaus Rath-35/+28
This obsoletes the ftruncate & fgetattr handlers. Fixes #58.
2016-10-09Renamed some examples to make their function more obviousNikolaus Rath-0/+602
Also, added more comments for the same purpose.
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