diff options
| author | Bernd Schubert <bschubert@ddn.com> | 2024-04-02 23:52:18 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-04-02 23:52:18 +0200 |
| commit | e2df577a7ca0c4b06d9eb36eb79138e34cc03088 (patch) | |
| tree | 4cb966aed1451c5462cad20a0e50c2c4e9b60f8c /include | |
| parent | 3e283a1bcbc4ec78fb45c4a8b3f683b8e3082c53 (diff) | |
| download | libfuse-e2df577a7ca0c4b06d9eb36eb79138e34cc03088.tar.gz | |
Add more documentation for FUSE_CAP_EXPORT_SUPPORT (#917)
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/fuse_common.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/fuse_common.h b/include/fuse_common.h index f052b67..6a060fd 100644 --- a/include/fuse_common.h +++ b/include/fuse_common.h @@ -183,6 +183,11 @@ struct fuse_loop_config_v1 { /** * Indicates that the filesystem supports lookups of "." and "..". * + * When this flag is set, the filesystem must be prepared to receive requests + * for invalid inodes (i.e., for which a FORGET request was received or + * which have been used in a previous instance of the filesystem daemon) and + * must not reuse node-ids (even when setting generation numbers). + * * This feature is disabled by default. */ #define FUSE_CAP_EXPORT_SUPPORT (1 << 4) |