There's no such field in resp, only cr_errno

travis-ci: success for py: Fix resp.errno access
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>

No functional changes; this just improves uniformity.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

This will be used instead of currently existing per-fd
transport sockets, which are used on receive_fd stage.

v2: Create the socket before CR_STATE_FORKING state.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

INCLUDEDIR gonna be used in compel.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Should be easier to debug if the variable is not passed by accident.

travis-ci: success for series starting with [1/2] zdtm:mnt_ext_auto: avoid segfault if ZDTM_NEWNS is not set
Signed-off-by: Dmitrii Shcherbakov <dshcherbakov@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

If getenv returns a null pointer we get a segfault here.

Let's exit in a more sane way.

travis-ci: success for series starting with [1/2] zdtm:mnt_ext_auto: avoid segfault if ZDTM_NEWNS is not set
Signed-off-by: Dmitrii Shcherbakov <dshcherbakov@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Move error printouts to the call sites to keep "fast path" clearer.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

It seems that logging amount of skipped pages was useful for early
debugging of pre-dumps, but now it just creates a lot of noise for lazy
pages and pre-dump tests.
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Don't append \n as pr_perror() already does it for us.

travis-ci: success for more pr_perror() usage fixes
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

In places where we are not supposed to print errno, or where
we already print in explicitly, use pr_err().

travis-ci: success for more pr_perror() usage fixes
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Use alias function attribute to provide memcpy(), memcmp()
and memset() in case we're not linking with libc. This is
needed as compiler can generate calls to those functions
(clang actually does that).

[v2: add comment, move aliases to under HAS_BUILTIN_*]

https://travis-ci.org/kolyshkin/criu/builds/174634847Idea-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

1. memcpy() last argument is size_t
2. memset() returns void *

Make our builtin_*() functions compatible.

https://travis-ci.org/kolyshkin/criu/builds/174634847Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

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

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

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

Done with python pprint module (indent = 4, width = 80)
for files with more than one field in and with length
exceeding 80 characters.

Travised-by: https://travis-ci.org/xemul/criu/jobs/171350152
travis-ci: success for zdtm: Split long .desc lines
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

For portability sake, we gonna share this header.

travis-ci: success for Common headers
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Don't use compiler-provided memset in parasite.

Fixes: commit 86434deba0b4 ("x86: dump TLS entries from GDT").

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

Tycho reported that Debian uses custom LDFLAGS to
build criu, this flag get propagated into built-in
targets where we use $(LD) instead causing build
procedure to interrupt

|  LINK     arch/x86/syscalls.built-in.o
| ld: unrecognized option '-Wl,-Bsymbolic-functions'
| ld: use the --help option for usage information
| /«PKGBUILDDIR»/scripts/nmk/scripts/build.mk:141: recipe for target 'arch/x86/syscalls.built-in.o' failed

Lets make maintainers life easier and filter
out the flags we know never accepted by $(LD).
Reported-by: Tycho Andersen <tycho.andersen@canonical.com>
Tested-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Sigframe pointer should be fixed size.
Convert members of rt_sigframe_ia32 to fixed-size.
After this patch dumping of compatible tasks works.

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

org.tap4j.parser.ParserException: Error parsing TAP Stream: Invalid position of TAP Header.
It must be the first element (apart of Comments) in the TAP Stream.

Reported-by: Mr Jenkins
travis-ci: success for zdtm: move a tap header to a first line
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Remove getting opts from descriptors out from scm engine,
this stuff is pure criu thing, so make it collect the data.

The tricky change here is that parasite code needs memory
to keep fd_opts on. The memory is taken from parasite args
region, which is now bigger than it used to be. But that's
not a big deal, as previously this space was allocated on
the parasite stack (!, but with smaller chunks).

On the other hand, now we have one memcpy less, as opts are
put directly into the destination buffer.

travis-ci: success for files: Rework send/recv-fds to be more generic
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

Currently criu built with criu/pie-util-fd (which
is a symlink to criu/pie/util-fd) with same flags
as we use in general compel infection code. Moreover
the criu link with libcompel.a, so we get a problem
where send_fds/recv_fds are multiple defined. Lets
rather unweave this mess:

 - drop criu/pie-util-fd.c completely
 - move send_fd/recv_fd inliners into scm.h
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

 - 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>