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Qiang Huang 286801d4c1 crtools: collect and check file locks 
We collect all file locks to a golbal list, so we can use them easily
in dump_one_task. For optimizaton, we only collect file locks hold by
tasks in the pstree.

Thanks to the ptrace-seize machanism, we can aviod the blocked file lock
issue, makes the work simpler.

Right now, the check handles only one situation:
-- Dumping tasks with file locks hold without the -l option.

This covers for the most part. But we still need some more work to make
it perfect robust in the future.

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
2013-01-17 14:42:07 +04:00
arch/x86 restorer: introduced the struct krlimit 2013-01-16 19:15:40 +04:00
Documentation doc: Add syscalls execution description 2012-12-18 00:39:20 +03:00
include crtools: collect and check file locks 2013-01-17 14:42:07 +04:00
pie cr: generalized format strings 2013-01-16 19:20:08 +04:00
protobuf protobuf: add a new description for saving file-lock 2013-01-17 14:38:11 +04:00
test zdtm: fanotify00 -- Make test to check all flags we c/r 2013-01-16 18:19:05 +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
cpu.c x86: moved x86-specific files into the directory arch/x86. 2013-01-09 17:02:47 +04:00
cr-check.c check: Check for SO_BINDTODEVICE is get-able 2012-12-04 16:35:58 +03:00
cr-dump.c crtools: collect and check file locks 2013-01-17 14:42:07 +04:00
cr-exec.c exec: Implement basic remote syscall execution 2012-12-18 00:26:37 +03:00
cr-restore.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
cr-show.c crtools: add a callback to show filelocks-%d.img 2013-01-17 14:38:40 +04:00
CREDITS Add the CREDITS file 2012-07-30 13:52:37 +04:00
crtools.c crtools: Add --file-locks option 2013-01-17 14:36:47 +04:00
eventfd.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
eventpoll.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
fifo.c files: pass a file descriptor on an fdinfo image instead of cr_fdset 2013-01-11 14:47:09 +04:00
file-ids.c x86: moved x86-specific files into the directory arch/x86. 2013-01-09 17:02:47 +04:00
file-lock.c crtools: collect and check file locks 2013-01-17 14:42:07 +04:00
files-reg.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
files.c restore: restore pocesses which share one fdtable (v5) 2013-01-12 00:54:46 +04:00
fsnotify.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
image.c crtools: add image contents for filelocks 2013-01-17 14:40:00 +04:00
ipc_ns.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
kcmp-ids.c x86: moved x86-specific files into the directory arch/x86. 2013-01-09 17:02:47 +04:00
libnetlink.c libnetlink: Make sure there is no error happened when dumping is done 2012-11-06 13:41:36 +04:00
log.c log: Add generic __print_on_level helper 2013-01-14 14:26:18 +04:00
Makefile crtools: collect and check file locks 2013-01-17 14:42:07 +04:00
mount.c ns: Introduce ns descriptors 2013-01-15 23:24:01 +04:00
namespaces.c ns: Introduce ns descriptors 2013-01-15 23:24:01 +04:00
net.c ns: Introduce ns descriptors 2013-01-15 23:24:01 +04:00
netfilter.c x86: moved x86-specific files into the directory arch/x86. 2013-01-09 17:02:47 +04:00
parasite-syscall.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
pipes.c pipe: Dump and restore pipe size 2013-01-11 17:45:54 +04:00
proc_parse.c crtools: collect and check file locks 2013-01-17 14:42:07 +04:00
protobuf.c protobuf: add a new description for saving file-lock 2013-01-17 14:38:11 +04:00
pstree.c pstree: add a function to check if a task is in pstree 2013-01-17 14:40:01 +04:00
ptrace.c x86: moved x86-specific files into the directory arch/x86. 2013-01-09 17:02:47 +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
shmem.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
signalfd.c files: pass a file descriptor on an fdinfo image instead of cr_fdset 2013-01-11 14:47:09 +04:00
sk-inet.c restore: don't desable tcp repair mode twice 2013-01-14 18:47:19 +04:00
sk-packet.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
sk-queue.c x86: moved x86-specific files into the directory arch/x86. 2013-01-09 17:02:47 +04:00
sk-tcp.c restore: don't desable tcp repair mode twice 2013-01-14 18:47:19 +04:00
sk-unix.c files: pass a file descriptor on an fdinfo image instead of cr_fdset 2013-01-11 14:47:09 +04:00
sockets.c ns: Introduce ns descriptors 2013-01-15 23:24:01 +04:00
sysctl.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
tty.c crtools: add ability to create and close a service fd (v3) 2013-01-12 00:54:37 +04:00
util-net.c x86: moved x86-specific files into the directory arch/x86. 2013-01-09 17:02:47 +04:00
util.c cr: generalized format strings 2013-01-16 19:20:08 +04:00
uts_ns.c ns: Introduce ns descriptors 2013-01-15 23:24:01 +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)