The current mechanism for determining ARM architecture version
breaks down when cross-compiling. Default to ARMv7 if the user
specifies ARCH=arm. Users wishing to cross-compile for ARMv6
platforms such as the Raspberry Pi should use ARCH=armv6 as
previously required.
Acked-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Without this a user may encounter the following error.

arch/arm/include/asm/atomic.h:38:2: error: implicit declaration of function ‘smp_mb’

With the #error pragma a user is a least pointed to the specific
section in the file that's causing the problem

arch/arm/include/asm/atomic.h:21:2: error: #error ARM architecture version (CONFIG_ARMV*) not set or unsupported.
Acked-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

ARCH is a user-facing variable and setting it on the command line
clobbers any manipulation attempted in the makefile. Following
the example of the Linux kernel makefiles, use a SRCARCH variable
instead for the internal, potentially fixed-up, architecture name.
This fixes the following error.

make ARCH=x86_64
Makefile:69: *** "The architecture x86_64 isn't supported".  Stop.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The top-level makefile defines an ARCH_DIR variable. Always use
it rather than referencing ARCH directly, since ARCH may be set
by the user on the command line and that raw input may not be
what needs to be used internally.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

A user may have necessary linker directories specified in CFLAGS.
Make sure to include them.

Change-Id: I76c2a7bd6e34cc282bfcd5f83cc69ae7fa2c8cc2
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The makefile includes need to be moved for everything to be
defined properly when the configure tests run.

The Ubuntu 12.04 x86_64 GCC and Linaro's 13.08 and newer AArch64
GCC's have the if_packet.h kernel header, but as of 13.12,
the Linaro AArch32 GCC does not.

Change-Id: I363c43fdb81b028f99aac77e15bff9462c87af4b
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The links to the versioned libcriu.so.* included $(DESTDIR) and
$(LIBDIR) which will generate wrong links if building criu packages.
Now the links points to the correct file without any path.

For some reason criu.8 was installed with executable permission. Use
'install' with '-m 644' to make sure this does not happen.
Signed-off-by: Adrian Reber <adrian@lisas.de>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

No need to read it in cycle.
Repored-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Repeated custom entries are presented as an array
of pointers in the memory, so once we fetch the
first entry we are to continue iterating pointers
instead.

Before

	| vmas: {
	|         start: 0x00000000400000
	|         end: 0x00000000406000
	|         pgoff: 0000000000000000
	|         shmid: 0x0000000000000b
	|         prot: 0x5
	|         flags: 0x2
	|         status: 0x41
	|         fd: 0xffffffffffffffff
	| }
	| :{
	|         start: 0x00000000462d00
	|         end: 0000000000000000
	|         pgoff: 0000000000000000
	|         shmid: 0x00000000605000
	|         prot: 0x606000
	|         flags: 0
	|         status: 0x5000
	|         fd: 0x0000000000000b
	|         madv: 0x00000000000041
	| }

After

	| vmas: {
	|         start: 0x00000000400000
	|         end: 0x00000000406000
	|         pgoff: 0000000000000000
	|         shmid: 0x0000000000000b
	|         prot: 0x5
	|         flags: 0x2
	|         status: 0x41
	|         fd: 0xffffffffffffffff
	| }
	| :{
	|         start: 0x00000000605000
	|         end: 0x00000000606000
	|         pgoff: 0x00000000005000
	|         shmid: 0x0000000000000b
	|         prot: 0x1
	|         flags: 0x2
	|         status: 0x41
	|         fd: 0xffffffffffffffff
	| }
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

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

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

Signed-off-by: Tikhomirov Pavel <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Tikhomirov Pavel <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

We're aligning members and number in protobuf
files from the very beginning for readability
sake. So fix up newer ones which were not.

Also use /* */ comments, not //.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

setup_opts_from_req() prints an error message, so there's no need
for its caller to print another one.

While at it, simplify/unify error checking, treating any
non-zero value as an error.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Using a soname makes it easy for applications to
detect if the ABI of libcriu.so has changed.
It still creates libcriu.so as before in lib. During
'make install' additional links are created:

 libcriu.so -> libcriu.so.1.0
 libcriu.so.1 -> libcriu.so.1.0
Signed-off-by: Adrian Reber <adrian@lisas.de>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Tikhomirov Pavel <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

CONFIG_HAS_PEEKSIGINFO_ARGS is used there.

Cc: Christopher Covington <cov@codeaurora.org>
Reported-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

For x86_64, LIBDIR can be tricky to find out. Nevertheless, this
works for at least RedHat/CentOS/Fedora, SLES/openSUSE, Debian/Ubuntu
and Gentoo. So, while it can guess LIBDIR wrong, this is still
a good approximation for those installing criu from source.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Adrian Reber <adrian@lisas.de>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

After previous fixes we can merge and move a couple
of them for easier reading.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Same for previous patch with vmas -- we do it on collect and
on real open. Just put the pointer on fifo_info structure.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

We do it first -- on collect, second -- on restore. The
2nd lookup is excessive, we can put fd pointer on vm_area
at lookup and reuse one later.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

On restore we only need to know currnet task mappings' start and end
to find where to put the restorer blob. And since the smaps file in
/proc/pid is up to 3 times slower, than the maps one, it makes
perfect sense just to parse the latter one.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Those opened for cwd, root, exe link and vma-s do not
care about the pos value.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Usefult to test restore time, for example.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

With new remap refcount users will get the counter
eventually as they appear.

Reported-by: Andrew Vagin <avagin@parallels.com> via Jenkins
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

To link Open MPI against CRIU I need the header files installed.
Attached is a patch which adds the necessary Makefile rules to
install libcriu.so and the header file to compile against CRIU.
Signed-off-by: Adrian Reber <adrian@lisas.de>
Acked-by: Kir Kolyshkin <kir@openvz.org>
Acked-by: Andrew Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

With packed reg-files we have a complex fd - file - vma - remap interaction. I
think this should be reflected in the code comment.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

If a file mmaped or pointed by exe link is unlinked, we will
generate a ghost file for it. On restore the ghost file will
be created with the users counter 1 and the very first open
(e.g. for mmap) will unlink the file.

Handle this by bumping up user counter for every mapping
pointing on the file.

This appeared after previous patches that packed the reg-files
image. Before it each vma and exe link created separate entry
in the reg-files image.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

We have tons of files with equal IDs, e.g. libraries mapped
to different tasks. No need in writing all this duplicate
stuff into images -- cache the IDs with dev:ino keys.
Acked-by: Andrew Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

For unlinked opened and mmaped files we'd need to
care about remaps, for this the callback with both
file_desc and fdinfo_list_entry will be required.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

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

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

When a process is started in a new pid namespace, the init process must
colleck zombies.

But before this the init process must waits the root test process, which
returns a status of preparation stage.

Currently these two operation can race, because the both ones call waitpid().
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Useful to test restore time -- just abort restore with this
action and that's it.
Acked-by: Andrew Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

If we specify log level to none (0) the result is LOG_INFO (2).
Acked-by: Andrew Vagin <avagin@parallels.com>
Acked-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>