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Andrey Vagin e1b02a48c1 cr-restore: block SIGCHLD for restoring namespaces 
Restore of namespaces requires executions of external tools
(ip, tar, etc). We want to know return codes, so we should
block a default sigchld handler. Before we did that for each
command, I suggest to block SIGCHLD, then restore namespace and
unblock SIGCHLD.

The default sigchld handler is used for catching target processes,
but all this processes (except a current one ) are started after
restoring namespaces.

Currently we forgot to block SIGCHLD before executing "ip",
and this bug was caught.

Reported-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
2012-09-25 15:59:13 +04:00
Documentation docs: Prepare for 0.2 2012-09-19 17:04:27 +04:00
include criu: Version 0.2 release 2012-09-20 13:44:18 +04:00
protobuf tcp: save and restore rcv_wscale (v2) 2012-09-19 16:17:11 +04:00
test app-test: dump and restore a Linux Container 2012-09-17 20:06:47 +04:00
.gitignore Update .gitignore 2012-07-09 15:03:38 +04:00
.mailmap repo: Add mailmap file 2012-03-25 23:31:20 +04:00
COPYING Add COPYING file 2011-12-05 14:11:05 +04:00
cr-check.c check: Add check_tty 2012-09-12 20:00:56 +04:00
cr-dump.c tty: Verify active pairs once dump complete 2012-09-20 13:35:39 +04:00
cr-restore.c cr-restore: exit if someone can not be restored 2012-09-25 15:54:51 +04:00
cr-show.c tty: Add show method 2012-09-12 20:00:55 +04:00
CREDITS Add the CREDITS file 2012-07-30 13:52:37 +04:00
crtools.c crtools: add ability to execute external scripts (v2) 2012-09-17 20:05:23 +04:00
eventfd.c eventfd: Add LOG_PREFIX 2012-08-20 15:14:43 +04:00
eventpoll.c files: Hide pslist selection logic into file desc handlers 2012-09-14 21:53:51 +04:00
fifo.c fd: Remove per-filetype make_gen_id abstraction 2012-08-11 22:41:29 +04:00
file-ids.c protobuf: Start switching our image entries to Google's protobuf 2012-07-17 07:10:41 +04:00
files-reg.c reg-files: No need for atomic @users 2012-09-17 20:13:20 +04:00
files.c files: Hide pslist selection logic into file desc handlers 2012-09-14 21:53:51 +04:00
gen-offsets.sh make: Generate offsets from linked files only 2012-04-18 18:22:15 +04:00
image.c tty: Add show method 2012-09-12 20:00:55 +04:00
inotify.c inotify: Add LOG_PREFIX 2012-08-20 15:14:57 +04:00
ipc_ns.c ipc: Fix uninitialized ptr xfree-ing 2012-09-19 20:32:30 +04:00
kcmp-ids.c parasite: remove excessive header deps from parasite.h and friends 2012-05-30 12:50:18 +04:00
libnetlink.c code: A little but more checkpatch fixes over code 2012-08-11 22:19:34 +04:00
log.c log: Add log_get_loglevel() helper 2012-09-03 14:44:01 +04:00
Makefile tty: Add checkpoint/restore for unix terminals v6 2012-09-12 20:00:54 +04:00
Makefile.inc make: Move common definitions to Makefile.inc 2012-09-02 00:58:37 +04:00
Makefile.pie make: Add -fno-strict-aliasing 2012-08-14 14:22:42 +04:00
Makefile.syscall make: Disable stack executable bit 2012-07-20 19:39:25 +04:00
mount.c cr-restore: block SIGCHLD for restoring namespaces 2012-09-25 15:59:13 +04:00
namespaces.c cr-restore: block SIGCHLD for restoring namespaces 2012-09-25 15:59:13 +04:00
net.c tcp: rename functions for unlocking tcp connections 2012-09-17 20:07:03 +04:00
netfilter.c sockets, inet: Use inet_sk_entry as a reference in inet_sk_info 2012-07-16 07:03:59 +04:00
parasite-head-x86-64.S parasite: Move bootstrap code into parasite-head-x86-64.S 2012-04-18 18:22:52 +04:00
parasite-syscall.c parasite: Make sure the arguments passed do never overwrite args zone 2012-09-19 16:18:00 +04:00
parasite.c parasite: Initialize fd in parasite_get_proc_fd 2012-09-11 18:56:24 +04:00
pie.lds.S make: Generate offsets from linked files only 2012-04-18 18:22:15 +04:00
pipes.c files: Formalize fd restore priorities 2012-09-14 22:09:22 +04:00
proc_parse.c proc: use bigger buffer for one line from mountinfo 2012-09-19 15:02:25 +04:00
protobuf.c tty: Add checkpoint/restore for unix terminals v6 2012-09-12 20:00:54 +04:00
pstree.c pstree: Use max() helper in max_pid assignment 2012-09-17 18:22:13 +04:00
ptrace.c Helper for si_code event extraction. 2012-04-25 21:35:40 +04:00
rbtree.c code: Fix spaced indentation where found 2012-08-11 21:36:03 +04:00
README Drop kernel patching from README 2012-01-29 16:26:36 +04:00
restorer-log.c restorer: unify log functions 2012-09-14 15:14:11 +04:00
restorer.c restorer: Add "memory" constraint into asm statement 2012-09-25 15:33:12 +04:00
shmem.c shmem: Get rid of static array of dumped shmem areas 2012-08-17 00:20:58 +04:00
signalfd.c fd: Remove per-filetype make_gen_id abstraction 2012-08-11 22:41:29 +04:00
sk-inet.c restore: disable repair mode in post_open() 2012-08-27 23:16:50 +04:00
sk-packet.c show: Show netdevice indices with %d 2012-08-21 16:47:32 +04:00
sk-queue.c pb: Rewrite object showing to use pb-descs 2012-08-07 19:22:02 +04:00
sk-tcp.c tcp: save and restore rcv_wscale (v2) 2012-09-19 16:17:11 +04:00
sk-unix.c files: Formalize fd restore priorities 2012-09-14 22:09:22 +04:00
sockets.c sk-inet: restore option REUSEADDR (v2) 2012-08-20 17:50:08 +04:00
syscall-common-x86-64.S syscalls: Complete redesign v9 2012-04-18 18:23:19 +04:00
syscalls-x86-64.sh syscalls: Complete redesign v9 2012-04-18 18:23:19 +04:00
sysctl.c parasite: remove excessive header deps from parasite.h and friends 2012-05-30 12:50:18 +04:00
tty.c tty: Verify active pairs once dump complete 2012-09-20 13:35:39 +04:00
util-net.c fown: get pid and uid-s from parasite 2012-09-05 16:41:14 +04:00
util.c util: add a function for running scripts 2012-09-17 20:05:39 +04:00
uts_ns.c code: Remove trailing whitespaces over .c and .h files 2012-08-11 21:34:35 +04:00

README 

crtools
=======

An utility to checkpoint/restore tasks.

Some code snippets are borrowed from

 - Linux kernel (http://kernel.org/)
 - git (http://git-scm.com/)
 - kvm-tools (https://github.com/penberg/linux-kvm)
 - ptrace-parasite (https://code.google.com/p/ptrace-parasite/)

Many thanks to these projects.

Licensed under GPLv2 (http://www.gnu.org/licenses/gpl-2.0.txt)