Thread ones start after shared.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

An interference of sigreturn_restore rework patches and vm_open callback ones
has lead to the situation when vme for restorer has already been copied to
rst-mem, but sysv shmem vm_open tried to modify previously seen vmes.

Fix this by copying vme-s to restorer late, but still before sigreturn_restore.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

The mremap() grow on anonymous shared memory doesn't produce
usable segment, as the underlying kernel tmpfs file doesn't
get truncated. So any access to new mem will result in sigbus.

Disable this grow for now, we only need few of such memory.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

The RM_PRIVATE memory can move every time we call rst_mem_alloc,
so it's impossible to have static pointer on it. Since task args
is used actyvely, it will be easier to handle it manually.
Reported-by: Andrey Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

After all arrays remapping is reworked, the remap_array() can
be dropped from code and in-place ptr fixup helper can appear.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

These two objects are actually needed at the very early stages of
restore, much earlier than they are actually allocated. To make
life nicer, let's allocate args from private rst mem, it will get
remapped into restorer blob automatically.

The new memory layout then is

  | restorer code | memzone (stacks and sigframes) | arguments |

The last area is unmapped at the very end of restorer code. Also
this gives the opportunity not to copy many bits betweek static
variables and task-args, but put them directly into args. All the
next patches are about it.

Also the sigreturn_restore() is now stuffed with preparatory code
and is quite big. When new "restoring" is added it's confusing at
which place in the code it should be inserted. This patch makes
a clear distinction -- the sigreturn_restore() is __only__ about
remapping the memory into restorer blob and jumping into it. All
the rest should go into restore_one_alive_task().
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

Right now memzone (stack and sigframe) sit on thread args, which
are allocated independently from rst-mem.

In the next patches task and thread args will be moved on rst-mem
and will get unmapped by restorer at the end. Since both stack and
sigframe are required even after rst-mem unmap, memzon should live
independelntly.

The new restorer blob layout will be described in the next patch.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>

When getting hint for restorer blob we scan the list of
vmas in criu address space. Since these vmas are only
required to find holes, we can merge vmas alltogether
and make restorer_get_vma_hint's work easier.

Reduces list of items in small zdtm tests from 71 to 9.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

In this case we can run more tests
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Signed-off-by: Deng Guangxing <dengguangxing@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

join-ns zdtm test will skip ns and uns flavors, and
some socket related test, too. Because join-ns test will
try to join an existing network namespace.
Signed-off-by: Deng Guangxing <dengguangxing@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

CID 159849 (#4 of 4): Resource leak (RESOURCE_LEAK)
15. leaked_storage: Variable jn going out of scope leaks the storage it points to.
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

To match them in struct cr_options declaration.
No func change.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Signed-off-by: Deng Guangxing <dengguangxing@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Signed-off-by: Deng Guangxing <dengguangxing@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

this patch add join-ns option to criu CLI and RPC.
This opt can be used in this fomat:
	--join-ns NS:PID|NS_FILE
for example --join-ns net:12345 or --join-ns net:/foo/bar.

pid namespaces is not supported yet. As fork() is needed to make
new pid-namespace work. That makes it hard for criu to track the
child-process through pid because another child process has been
created after fork().
Signed-off-by: Deng Guangxing <dengguangxing@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

The restore_bootstrap_len is restorer, args and rst-mem lenghts.

Restorer is pie_size() from restorer, which is page-size aligned.
Args len is aligned to page-size few lines above.
The remapable rst-mem grows page by page and is aligned too.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>

Currently all test mounts are mounted in the host mount namespace,
so on restore we get root with some mounts.

Cc: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Now we don't detect extra mounts, if they have peers with the same root
and target paths.
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Jenkins sends this files as a message body if something failed.

Cc: Sergey Bronnikov <sergeyb@openvz.org>
Fixes: 474f2dfc ("zdtm.py: add option --keep-going")
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Reported-by: Stanislav Kinsburskiy <skinsbursky@virtuozzo.com>
Cc: Stanislav Kinsburskiy <skinsbursky@virtuozzo.com>
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

We were luckely on built-in tests, because always
AIO pages were present, and, thus, they are dumped.
But AIO pages are not guaranteed to be present
in common case.

This patch makes AIO pages are dumped certanly.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

nr_req always depends on ring size and we even check for that.

Kill parasite_aio::max_reqs,vma_nr_reqs and vma_area::aio_nr_req,
because they are not need and excess.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

The first is a preparation to kill aio_nr_req. The second
and the third are to have more debug info at restore.

v2: Print mmap err code
Signed-off-by: Kirill Tkhai <ktkhai@vituozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>