For pre-dump we won't need IDs, but will need items only,
thus make these two calls separate.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

They are not documented, thus OK for now. Two options --
* one to specify where the parent images are
* one to reset dirty memory tracking
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

This is required for (soon to be) pre-dump command -- this command
will have to keep parasite args with pagemap (iovecs) some time after
parasite is executed. Since we call mprotect cmd _after_ pages dump
we can thus spoil these iovecs. To address this vmas to mprotect and
iovecs to dump are located in one parasite args area one after another
without intersections.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

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

Options are collected in global variable, no need to have them on stack.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Basic timings for dump (freeze, frozen, mem dump).
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

It's not perfect, only the depth is taken into account,
not the field number, but this is OK for now.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

We'll have one more "image" file generated by dump and (surprisingly)
restore commands -- the stats one. It will contain in a single pb
object all the statistics collected by dump/restore.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

...after commit 1e1bf240Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

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

and warn if it is used.

v2: fix help text as well
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

This thing is global, we can address one explicitly.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

We can "guess" one w/o addirional (obfuscating) argument to
the pb showing engine.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

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

For consistency sake.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

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

The infected code must be executed in the ARM mode but the dumpee
may run in the Thumb mode while being dumped so the bit CPSR.T
may be set when the control is transfered to the infected blobs
so this code is executed in the Thumb mode too.

We have to clear the bit CPSR.T before transfering control
to the infected code to prevent the behavior described above.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Reported-by: Chanho Park <chanho61.park@samsusng.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

In case if we are migrating a session leader task with a solely
slave peer we should not try to restore a group on the terminal
but rather simply inherit it, because a session of the group of
the inherited terminal is not the same as a session of our leader
thus kernel refuse to set any different group here.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Since we're migrating session leader here, test for session has not
been changed instead.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

This is easier for debugging, the former SID/PGID remains untouched
and printed out in logs.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

If enabled CONFIG_VFP, we should use PTRACE_GETVFPREGS instead of GETFPREGS.
Most of arm hardwares(since then armv6) use VFP. If we need runtime checking of
vfp, we should parse /proc/cpu_info or use any other techniques.
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Avoid memleak in err case
Signed-off-by: Libo Chen <libo.chen@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Note to package maintainers:

1 Yes we do support DESTDIR.

2 From packaging scripts, use something like this:

	make install DESTDIR=$RPM_BUILD_ROOT PREFIX=/usr

(v2: add PREFIX, install to /usr/local not /usr by default)
(v3: fix criu man section -- it is 8 not 1)
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Without this patch, ifd will leak when inotify_add_watch fail.
Signed-off-by: Libo Chen <libo.chen@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Without this patch, fd will leak when epoll_create fail!
Signed-off-by: Libo Chen <libo.chen@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Let's save 4 lines of output and put -vvv at the same line as -v 3.

Also, -v argument is in fact option, so mark it as such: [NUM]
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

From where I stand, any help output that exceeds 80 columns is hardly
readable, so let's try to fit into that.

Apparently in many cases we can do that by removing some extra info
which, I guess, belongs to documentation or wiki but not to --help
output which should be just a short reference.

For this reason, this patch also removes information about environmental
variable set for external scripts -- such documentation does not belong
here.

Please review carefully to make sure I haven't thrown the baby out
with the bathwater.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

1. "written in file" -> "written to file"

2. "relative path is relative" -> "path is relative"

3. "each restored processes is written to the FILE.pid file\n" ->
   "log of each restored process is written to a separate FILE.pid file"
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Alternatively, we could add [<options>] but since this is the only
option let's just add this one.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>