mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-06 08:46:46 +00:00
fuse: always allow query of st_dev
Fuse mounts without "allow_other" are off-limits to all non-owners. Yet it makes sense to allow querying st_dev on the root, since this value is provided by the kernel, not the userspace filesystem. Allow statx(2) with a zero request mask to succeed on a fuse mounts for all users. Reported-by: Nikolaus Rath <Nikolaus@rath.org> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
parent
614c026e8a
commit
5157da2ca4
1 changed files with 11 additions and 1 deletions
|
@ -1689,8 +1689,18 @@ static int fuse_getattr(const struct path *path, struct kstat *stat,
|
||||||
struct inode *inode = d_inode(path->dentry);
|
struct inode *inode = d_inode(path->dentry);
|
||||||
struct fuse_conn *fc = get_fuse_conn(inode);
|
struct fuse_conn *fc = get_fuse_conn(inode);
|
||||||
|
|
||||||
if (!fuse_allow_current_process(fc))
|
if (!fuse_allow_current_process(fc)) {
|
||||||
|
if (!request_mask) {
|
||||||
|
/*
|
||||||
|
* If user explicitly requested *nothing* then don't
|
||||||
|
* error out, but return st_dev only.
|
||||||
|
*/
|
||||||
|
stat->result_mask = 0;
|
||||||
|
stat->dev = inode->i_sb->s_dev;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
return -EACCES;
|
return -EACCES;
|
||||||
|
}
|
||||||
|
|
||||||
return fuse_update_get_attr(inode, NULL, stat, request_mask, flags);
|
return fuse_update_get_attr(inode, NULL, stat, request_mask, flags);
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue