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14 Commits
Author SHA1 Message Date
Antonio SJ Musumeci 9308a3729c When file unlinked check open_files map 
Inadvertantly removed. Didn't realize that the kernel would not always
send file handle when unlinked.
 2026-04-28 16:04:26 -04:00
Antonio S. Musumeci 98648ae44b FUSE: require valid file/dir handle; drop open_files fallback 
Several FUSE ops fell back to looking up a FileInfo via
state.open_files when the kernel-provided fh was zero, returning
-ENOENT if the lookup failed. This path papered over handle-tracking
bugs and added cost on every call. Use the handle directly and
return -EBADF when it is invalid - the kernel should always hand us
a valid fh for an open resource.

Also simplify FileInfo::from_fh / DirInfo::from_fh and their to_fh
helpers: callers now handle the null-pointer case explicitly so the
ASSERT_NOT_NULL checks are redundant.

Covers fallocate, fchmod, fchown, fgetattr, flock, ftruncate,
futimens, read, release, releasedir, write, statx, ioctl (file +
dir), readdir (sequential, concurrent-on-read,
concurrent-on-search), and the passthrough fast paths in
create/open.
 2026-04-18 13:47:23 -05:00
Antonio SJ Musumeci acfa797503 Misc formatting changes 2026-03-31 19:53:17 -04:00
Antonio SJ Musumeci 511bf47af9 Convert stdint to short ints 2026-03-02 01:09:16 -05:00
Antonio SJ Musumeci 1d1bcd3b87 Add extra checks in for file handle lookup 2026-03-02 01:09:16 -05:00
Antonio SJ Musumeci a5a6c892b9 Update copyright headers 2026-03-02 01:09:16 -05:00
trapexit 0371f03def Rework how fuse request context is handled (#1543) 2025-10-12 23:21:36 -05:00
trapexit 8c649d33ee Start using std::filesystem::path for fusepath (#1522) 2025-09-17 22:51:16 -05:00
trapexit e8cd74cab0 Move everything to negative errno return types (#1499) 2025-07-25 17:53:48 -05:00
trapexit e310d24615 Add support for FUSE passthrough 2025-06-05 23:47:42 -05:00
Antonio SJ Musumeci 538467b86d config: rework global config, remove rwlock, make branches RCU like 
Also added unit tests. Should have done separately but found a number of bugs.
 2021-01-14 21:02:10 -05:00
Antonio SJ Musumeci 1b26f4908e general cleanup, slight memory reduction 2020-11-19 22:58:52 -05:00
Antonio SJ Musumeci 2fe20b888e clean up and separate out fs_* files 2020-08-18 19:28:36 -04:00
Antonio SJ Musumeci 6ecc618d83 remove .fuse_hidden file creation 
addresses #521

mergerfs is written using libfuse's high level API. The HLAPI forces a certain
behavior with regard to unlinking or rename overwriting of open files. It
renames the file to .fuse_hiddenXXXXXX and when incoming requests refer
to the unlinked file it will use path based calls and use that path.

This behavior leads to rmdirs failing or some software noticing
the .fuse_hidden files.

This patch changes the HLAPI and removes entirely the .fuse_hidden behavior.

See the README for more.
 2019-04-13 21:41:51 -04:00