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fuse: add inode/permission checks to fileattr_get/fileattr_set 

commit 1cc4606d19 upstream.

It looks like these checks were accidentally lost during the conversion to
fileattr API.

Fixes: 72227eac17 ("fuse: convert to fileattr")
Cc: <stable@vger.kernel.org> # v5.13
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Mikhalitsyn 2023-01-26 11:23:18 +01:00 committed by Greg Kroah-Hartman
parent d1c9727ba8
commit 833f8dbbdd
1 changed files with 6 additions and 0 deletions
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6
fs/fuse/ioctl.c
View File

@ -419,6 +419,12 @@ static struct fuse_file *fuse_priv_ioctl_prepare(struct inode *inode)
struct fuse_mount *fm = get_fuse_mount(inode);
bool isdir = S_ISDIR(inode->i_mode);
if (!fuse_allow_current_process(fm->fc))
return ERR_PTR(-EACCES);
if (fuse_is_bad(inode))
return ERR_PTR(-EIO);
if (!S_ISREG(inode->i_mode) && !isdir)
return ERR_PTR(-ENOTTY);