fuse: add inode/permission checks to fileattr_get/fileattr_set
It looks like these checks were accidentally lost during the conversion to
fileattr API.
Fixes: 72227eac177d ("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>
diff --git a/fs/fuse/ioctl.c b/fs/fuse/ioctl.c
index fcce94a..8ba1545 100644
--- a/fs/fuse/ioctl.c
+++ b/fs/fuse/ioctl.c
@@ -419,6 +419,12 @@
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);
