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mds: disallow hardlink across subvolume

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Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2020-08-05 16:04:30 +08:00
parent 53348ab67f
commit 55cc3f7d7d
1 changed files with 10 additions and 0 deletions
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10
src/mds/Server.cc
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@ -6336,6 +6336,16 @@ void Server::handle_client_link(MDRequestRef& mdr)
return;
}
CInode* target_pin = targeti->get_projected_parent_dir()->inode;
SnapRealm *target_realm = target_pin->find_snaprealm();
if (target_pin != dir->inode &&
target_realm->get_subvolume_ino() !=
dir->inode->find_snaprealm()->get_subvolume_ino()) {
dout(7) << "target is in different subvolume, failing..." << dendl;
respond_to_request(mdr, -EXDEV);
return;
}
// go!
ceph_assert(g_conf()->mds_kill_link_at != 1);