- Declare send_fds, recv_fds in sch.h, these
   are prototypes used in both compel and criu
 - Drop old protos from plugin-fds.h uapi file
 - Drop old code from fds.c source
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

When SCM_FDSET_HAS_OPTS is not set the scm-code.c
can't be built because it declares struct fd_opts
in parameters. Lets rather hide this type and
allow to build without SCM_FDSET_HAS_OPTS definition.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

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

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

In pure-compel library messing with opts is not required,
only criu and criu's pie will need it, so make it possible
to compile out common/scm-code's opts management.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Depending on the code using it, memcpy will be different.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

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

This is quite a tiny bigfix mostly release.

One interesting thing, though, is that CRIU can now be built with
clang on all the supported architectures :)
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Based on debian's manpage from Salvatore Bonaccorso:

e708a3a Sync manpage for crit to include short explanation for new subcommands
7dd571a Fix position for optional arguments in crit's manpage
017f8d9 Add minimal manpage for the crit

travis-ci: success for crit: added crit manpage
Signed-off-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

page_in_parent() returns true for all not dirty pages,
probably it should not be executed for zero pages.

------------------------ grep Error ------------------------
(00.115327) Error (criu/pagemap.c:191): Missing 8000 in parent pagemap, current iov: base=9000,len=32768
(00.115329) Error (criu/page-xfer.c:237): Hole 0x8000/4096 not found in parent
(00.160222) Error (criu/cr-dump.c:1636): Dumping FAILED.
------------------------ ERROR OVER ------------------------
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

https://github.com/xemul/criu/issues/253
travis-ci: success for test: don't execute cgroup03 with other cgroup tests concurrently
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Before:
=[log]=> dump/zdtm/transition/shmem/142/1/dump.log
------------------------ grep Error ------------------------
pie: 1: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 1: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 5: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 5: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 6: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 6: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
------------------------ ERROR OVER ------------------------

After:
=[log]=> dump/zdtm/transition/shmem/62/1/dump.log
------------------------ grep Error ------------------------
pie: 1: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 1: e/asm/parasite.h:45): Failed to dump TLS descriptor #13: -4
pie: 1: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 1: e/asm/parasite.h:45): Failed to dump TLS descriptor #14: -4
pie: 5: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 5: e/asm/parasite.h:45): Failed to dump TLS descriptor #13: -4
pie: 5: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 5: e/asm/parasite.h:45): Failed to dump TLS descriptor #14: -4
pie: 6: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 6: e/asm/parasite.h:45): Failed to dump TLS descriptor #13: -4
pie: 6: Error (/home/travis/build/0x7f454c46/criu/criu/arch/x86/includ>
pie: 6: e/asm/parasite.h:45): Failed to dump TLS descriptor #14: -4
------------------------ ERROR OVER ------------------------
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

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

If a mount overmounts something else, we can try to restore it
separetly and then move it to the right places after restoring
all mounts.

In this patch if we see that a mount is overmounts something,
we create a new directory in the root yard and restore this
mount and its sub-tree in this directory.

https://bugs.openvz.org/browse/OVZ-6778

v2: add more comments
    rename roots_mp into roots_yard_mp
v3: rename functions
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

It is preparation to handle over-mounts.

v2: don't set the same name for global and local variables
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

It will be used to handle overmounts
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

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

Since glibc is moving away from implicitly including sys/sysmacros.h
all the time via sys/types.h, include the header directly in more
places.  This seems to cover most makedev/major/minor usage.
Signed-off-by: Yixun Lan <dlan@gentoo.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

travis-ci: success for restore: Report error number if PR_SET_MM failed
Reported-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

To run the test zdtm/static/sched_policy00
/sys/fs/cgroup/cpu/user.slice/cpu.cfs_period_us needs to be non zero.
This changes it to 100 during the test and resets it to the original
value once the test finishes.

travis-ci: success for zdtm: set cpu.cfs_period_us to 100 during sched_policy00 test
Signed-off-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Currently when we have a shared group, we set a source mount for all
of them and then we need to update a source mount when we mount a first
mount from a shared group, because a shared id can be only inherited.
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

This function is going to be used more than once.

v2: don't change logic in this patch
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

One level always been handled properly but
two levels may cause problems.

travis-ci: success for Multiple nested deleted dentries fix
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

In case if several levels of dentries are missed we can't
restore them otherwise.

travis-ci: success for Multiple nested deleted dentries fix
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

 - take @mode into account
 - return system error codes on error

travis-ci: success for Multiple nested deleted dentries fix
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

https://github.com/xemul/criu/issues/260
https://travis-ci.org/avagin/criu/builds/182462796
https://ci.openvz.org/job/CRIU/job/criu-patchwork/941//console
v2: don't call page_pipe_add_hole for zero pages
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

In some distros (such as Arch), libxtables_standard is part of iptables
as `/usr/lib/iptables/libxt_standard.so`. With this change, the test passes,
otherwise netns-nf test fails.

Tested with make test.
Signed-off-by: Raghavendra D Prabhu <me@rdprabhu.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Negative retval is error, while 0 is OK.

v2: More places

travis-ci: success for criu: Fix open() retval analysing
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

CRIU uses iptables rules to block tcp connections and
if rules are added at the tail of the chain, other rules
can accept packets which have to be blocked.

travis-ci: success for series starting with [01/21] build: install libnet-dev
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Currently it's possible to continue testing despite failures only when
running zdtm.py with --all option. Let's make --keep-going option also
valid when more than one test is requested with --tests or --from.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

This makes crit show the type, which is handy. Also this will let us
deprecate the old format where remap type was encoded into remap ID.

travis-ci: success for files: Explicitly set linked remap type
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

This is an addition to commit 6273a5c ("Add ability to restore with
missing sysctls on the target node").

travis-ci: success for Document --weak-syscalls
Cc: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Option --help should provide a brief information, like a list of
commands and options and their meaning, ideally no more than 1 line per
option. There is no need to describe nuances and details here, since
we have documentation (wiki and  man pages) for that.

travis-ci: success for Document --weak-syscalls
Cc: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

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

Do it through new --weak-sysctls option to "criu restore".

When we migrate from source with newer kernel with some modern sysctl
to destination with older kernel without it or just with a kernel
configured without it (e.g. no CONFIG_IPV6_ROUTER_PREF), we face a
problem that not all of dumped sysctls can be successfuly restored
on the destination. So to address these problem introduce weak sysctls
migration, where we restore only available sysctls and skip others.

https://github.com/xemul/criu/issues/248

While on it, fix workaround for stable_secret eio skip.

travis-ci: success for Add ability to restore with missing sysctls on the target node
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

With the recent patches, criu is finally compileable with
clang for all architectures. To keep it that way, we need
Travis to test that on a regular basis.

The downside is, Travis build time is increased about 2x.

travis-ci: success for travis: enable arm/arm64/ppc builds with clang
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

When using the option --keep-going to get a quick overview of the test
results there is now a summary which tests have failed like:

 ############# 7 TEST(S) FAILED (TOTAL 268/SKIPPED 83) ##############
  * zdtm/static/sched_policy00(unknown)
  * zdtm/static/pthread00(unknown)
  * zdtm/static/pthread01(unknown)
  * zdtm/static/maps01(unknown)
  * zdtm/static/maps00(unknown)
  * zdtm/transition/maps008(unknown)
  * zdtm/transition/shmem(unknown)
 ############################### FAIL ###############################
Signed-off-by: Adrian Reber <areber@redhat.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Those two tests use same socket name and if both of them are run
simultaneously, they would fight for socket and one will get EADDRINUSE.
This patch gives socket_dgram_data an unique name, so that everyone will
be happy.

travis-ci: success for test: fix same socket names in socket-{dgram_data, snd_addr}
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

The installation needs to use python2, but it uses python in the
Makefile which fails later with syntax error
(since it is written for python2).

As per PEP-394 - https://www.python.org/dev/peps/pep-0394/ -,
'all distributions should ensure that python refers to the same target
as python2 .', hence this change.

Therefore, python2 is used by default in lib/Makefile, though
this can be overriden with PYTHON_BIN.

Tested with:

a) PYTHON_BIN=python2 make install
b) make install

c) export PYTHON_BIN=python2
   make test

Signed-off-by: Raghavendra Prabhu <me at rdprabhu dot com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Do not dump external sockets, that are not peers
for some processes sockets. We do not use them on
restore ==> we do not need to dump them.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>

 criu/sk-unix.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>