linux-stable/fs/fuse
Miklos Szeredi 4bef9a6a75 fuse: ioctl: translate ENOSYS in outarg
commit 6a567e920f upstream.

Fuse shouldn't return ENOSYS from its ioctl implementation. If userspace
responds with ENOSYS it should be translated to ENOTTY.

There are two ways to return an error from the IOCTL request:

 - fuse_out_header.error
 - fuse_ioctl_out.result

Commit 02c0cab8e7 ("fuse: ioctl: translate ENOSYS") already fixed this
issue for the first case, but missed the second case.  This patch fixes the
second case.

Reported-by: Jonathan Katz <jkatz@eitmlabs.org>
Closes: https://lore.kernel.org/all/CALKgVmcC1VUV_gJVq70n--omMJZUb4HSh_FqvLTHgNBc+HCLFQ@mail.gmail.com/
Fixes: 02c0cab8e7 ("fuse: ioctl: translate ENOSYS")
Cc: <stable@vger.kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-07-27 08:56:35 +02:00
..
acl.c fs.idmapped.v6.3 2023-02-20 11:53:11 -08:00
control.c
cuse.c driver core: class: remove module * from class_create() 2023-03-17 15:16:33 +01:00
dax.c mm: replace vma->vm_flags direct modifications with modifier calls 2023-02-09 16:51:39 -08:00
dev.c fuse_dev_ioctl(): switch to fdget() 2023-04-20 22:55:35 -04:00
dir.c fuse: revalidate: don't invalidate if interrupted 2023-07-27 08:56:33 +02:00
file.c iov_iter: add iter_iovec() helper 2023-03-30 08:12:29 -06:00
fuse_i.h fuse update for 6.3 2023-02-27 09:53:58 -08:00
inode.c fuse: Apply flags2 only when userspace set the FUSE_INIT_EXT 2023-07-27 08:56:34 +02:00
ioctl.c fuse: ioctl: translate ENOSYS in outarg 2023-07-27 08:56:35 +02:00
Kconfig
Makefile
readdir.c fs/fuse: Replace kmap() with kmap_local_page() 2022-11-23 09:10:49 +01:00
virtio_fs.c
xattr.c fs.idmapped.v6.3 2023-02-20 11:53:11 -08:00