In case if something is broken in the kernel and
we get a format corrupted -- simply exit out with
error instead of strlen'ing nil string.
Also while at it -- add a comment about format.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Before we would not detect the mount point for co-mounted controllers. Things
still worked because we'd just re-mount them ourselves and traverse our own
mount point, but this saves an extra mount().
Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
No need to pollute typedef out of structure
statement since we don't use it in that form.
Simply typedef in place. And align members
while we're at it.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Was broken by d57be38c -- this one pretty show does return 1.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
This just makes ctl->cur initialized all in one place,
but not scattered all over the code.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Errors building natively for x86_64 on Ubuntu 12.04:
session02.c:142:13: error: ‘PR_SET_CHILD_SUBREAPER’ undeclared
session03.c:175:13: error: ‘PR_SET_CHILD_SUBREAPER’ undeclared
vdso01.c:300: undefined reference to `clock_gettime'
Error cross compiling for arm using Linaro 14.01 toolchain:
gcc: warning: ‘-mcpu=’ is deprecated; use ‘-mtune=’ or ‘-march=’ instead
cc1: error: unrecognized command line option ‘-mfpu=neon’
cc1: error: unrecognized command line option ‘-marm’
criu-rtc.c:1:0: error: bad value (cortex-a15) for -mtune= switch
cc1: error: unrecognized command line option ‘-mfpu=neon’
cc1: error: unrecognized command line option ‘-marm’
criu-rtc.pb-c.c:1:0: error: bad value (cortex-a15) for -mtune= switch
Errors cross compiling for aarch64 using Linaro 14.01 toolchain:
maps007.c: In function ‘main’:
maps007.c:88:4: error: passing argument 1 of ‘atomic_read’ from incompatible pointer type [-Werror]
if (futex_get(&shm->stop) && atomic_get(&shm->delta) == MAX_DELTA)
^
In file included from ../../lib/lock.h:10:0,
from maps007.c:13:
../../lib/arch/aarch64/include/asm/atomic.h:14:19: note: expected ‘const atomic_t *’ but argument is of type ‘struct f
utex_t *’
static inline int atomic_read(const atomic_t *v)
^
ptrace.c: In function ‘main’:
ptrace.c:97:15: error: ‘PTRACE_GETREGS’ undeclared (first use in this function)
if (ptrace(PTRACE_GETREGS, stopped, NULL, regs)) {
^
Signed-off-by: Christopher Covington <cov@codeaurora.org>
Reviewed-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
The path in cc->path here always has a "/" prefix since it comes from
/proc/$pid/cgroup. The additional / confuses the string slinging because ftw()
normalizes paths to have one "/" when we start traversing a subdirectory.
Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
When we dive into showing nested message, the call to it will
overwrite the ctl->Arg field with the descriptor of the nested
one. As a result, after the call returns we continue showing
old message with new descriptor.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
We have to many controllers names in cgroup.c file.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
During the dump phase, /proc/cgroups is parsed to find co-mounted cgroups.
Then, for each task /proc/self/cgroup is parsed for the cgroups that it is a
member of, and that cgroup is traversed to find any child cgroups which may
also need restoring. Any cgroups not currently mounted will be temporarily
mounted and traversed. All of this information is persisted along with the
original cg_sets, which indicate which cgroups a task is a member of.
On restore, an initial phase creates all the cgroups which were saved. Tasks
are then restored into these cgroups via cg_sets as usual.
Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
If pfn = 0 it means we hit something very strange
condition but better to not yield BUG_ON here,
better exit with error for future investigation.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Cyrill: we exclude these tests because of braindamaged scheme
btrfs uses for subvolume device numbering which we don't
yet support in inrmaps.
Test: zdtm/live/static/inotify_irmap, Result: FAIL
==================================== ERROR ====================================
Test: zdtm/live/static/inotify_irmap, Namespace: 1
Dump log : /mnt/btrfs/workspace/test/dump/inotify_irmap/16077/1/dump.log
--------------------------------- grep Error ---------------------------------
(00.024342) Error (irmap.c:80): irmap: Can't stat /var/spool: No such file or directory
(00.024365) Error (irmap.c:80): irmap: Can't stat /lib/udev: No such file or directory
(00.024378) Error (irmap.c:80): irmap: Can't stat /no-such-path: No such file or directory
(00.024383) Error (fsnotify.c:184): fsnotify: Can't dump that handle
(00.024397) Error (cr-dump.c:1563): Dump files (pid: 16090) failed with -1
(00.024779) Error (cr-dump.c:1911): Dumping FAILED.
------------------------------------- END -------------------------------------
================================= ERROR OVER =================================
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
As per current top commit (9c0c23c0) the amount of code in CRIU
_without_ the contents of the test/ directory is
$ git grep -l . | egrep -v ^test | xargs wc -l
...
49999
This is the only chance for such a great one-liner :)
The place in the code is not completely random -- it's one of the
few occurrences of two consecutive empty lines in a .c file.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Tested-by: Andrew Vagin <avagin@parallels.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Ruslan Kuprieiev <kupruser@gmail.com>
CRIU doesn't support relative unix sockets paths, so
tune the test to use absolute.
(v2: Off-by-one spotted by Filipe)
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Otherwise the connection can be disconnected due to a timeout, because
the kernel may drop packets from a receive queue (RcvPruned in
/proc/net/netstat).
Half of buffers always stay in the socket, another half is circulated.
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
When cwd is removed (it can be) we need to collect the respective
file_desc before starting opening any files to properly handle
ghost refcounts. Otherwise we will miss one refcount from the
cwd's on ghost, which in turn will either BUG inside ghost removal,
or will fail the cwd due to the respective dir being removed too
early.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
If we have opened and rmdir-ed directory, the dump works OK
creating the ghost file and remap, but restore creates _file_
instead of directory.
Fix this.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
When we have opened and unlinked chr or blk device, we
shouls also take care of their rdev value. Thus -- new
field in image and some new steps on dump and restore.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Some tests require custom options for dump and restore. Instead
of hard-coding test names into zdth.sh, introduce the $test.opts
file from which zdtm would pick the needed options.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
