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Pavel Emelyanov 295090c1ea img: Introduce the struct cr_img 
We want to have buffered images to speed up dump and,
slightly, restore. Right now we use plan file descriptors
to write and read images to/from. Making them buffered
cannot be gracefully done on plain fds, so introduce
a new class.

This will also help if (when?) we will want to do more
complex changes with images, e.g. store them all in one
file or send them directly to the network.

For now the cr_img just contains one int _fd variable.

This patch chages the prototype of open_image() to
return struct cr_img *, pb_(read|write)* to accept one
and fixes the compilation of the rest of the code :)

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
2014-09-30 21:48:13 +04:00
arch x86: don't call wait4 as waitpid 2014-09-23 20:36:44 +04:00
contrib Add a convenience shell script for Docker container C/R 2014-09-09 16:08:22 +04:00
Documentation Small spelling fixes in criu.8 manpage 2014-08-04 13:09:54 +04:00
include img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
lib restore: Introduce the --restore-sibling option 2014-09-10 18:30:30 +04:00
pie x86: don't call wait4 as waitpid 2014-09-23 20:36:44 +04:00
protobuf remap: add a dead pid /proc remap 2014-09-19 17:42:48 +04:00
scripts crtools: check for setproctitle_init 2014-09-02 16:14:39 +04:00
test test: rpc: test page-server 2014-09-22 16:30:48 +04:00
.gitignore lib: Generate pkgconfig file 2014-08-04 13:57:18 +04:00
.mailmap repo: Add mailmap file 2012-03-25 23:31:20 +04:00
action-scripts.c scripts: Fix path assignment 2014-09-09 22:07:57 +04:00
bfd.c bfd: Multiple buffers management (v2) 2014-09-29 15:37:14 +04:00
cgroup.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
COPYING Add LGPL licence for library directory 2013-04-01 12:29:06 +04:00
cr-check.c eventpoll: parse_fdinfo_pid_s() returns allocated object for eventpol tfd 2014-09-02 16:08:17 +04:00
cr-dedup.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
cr-dump.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
cr-exec.c criu: Several formatting fixes 2014-01-14 09:33:19 +04:00
cr-restore.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
cr-service.c service: page-server: allow requesting page-server without setting any ps_info 2014-09-22 16:30:37 +04:00
cr-show.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
CREDITS Add the CREDITS file 2012-07-30 13:52:37 +04:00
crtools crtools: rename binary to criu 2013-04-30 20:17:55 +04:00
crtools.c restore: Introduce the --restore-sibling option 2014-09-10 18:30:30 +04:00
eventfd.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
eventpoll.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
fifo.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
file-ids.c files-ids: generate id-s accoding with mnt_id, st->st_dev and st->st_ino 2014-04-21 22:39:28 +04:00
file-lock.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
files-ext.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
files-reg.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
files.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
fsnotify.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
image-desc.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
image.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
ipc_ns.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
irmap.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
kcmp-ids.c kcmp: Fix ret code comparison 2014-04-22 12:51:15 +04:00
kerndat.c Dump capabilities from the parasite 2014-08-15 23:10:44 +04:00
libnetlink.c netlink: Lower netlink error report log level 2013-07-04 15:49:02 +04:00
log.c restore: open the pidfile with O_EXCL 2014-09-03 20:58:24 +04:00
Makefile test: clean the "test" directory from test/Makefile 2014-09-02 16:10:55 +04:00
Makefile.config crtools: check for setproctitle_init 2014-09-02 16:14:39 +04:00
Makefile.crtools bfd: File-descriptors based buffered read 2014-09-23 20:48:38 +04:00
Makefile.inc install: install criu-service logrotate config 2014-02-18 12:39:50 +04:00
mem.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
mount.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
namespaces.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
net.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
netfilter.c iptables: use cr_system instead of system 2013-10-02 20:09:37 +04:00
page-pipe.c log: Use pr_quelled helper 2014-09-03 20:56:58 +04:00
page-read.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
page-xfer.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
pagemap-cache.c pagemap-cache: Use page.h helpers 2014-02-21 16:29:41 +04:00
parasite-syscall.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
pipes.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
plugin.c plugin: Rework plugins API, v2 2014-09-03 20:48:36 +04:00
proc_parse.c bfd: timerfd -- Fix parsing typo 2014-09-30 11:48:15 +04:00
protobuf-desc.c timerfd: Add protobuf entries into the image 2014-08-06 19:18:34 +04:00
protobuf.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
pstree.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
ptrace.c unseize: Don't print error when unseizing stopped task into stopped state 2013-12-20 23:22:04 +04:00
rbtree.c code: Fix spaced indentation where found 2012-08-11 21:36:03 +04:00
README Update README file so that it looks more informative on github front page 2014-01-24 20:42:08 +04:00
rst-malloc.c whitespace-at-eol cleanup 2013-12-12 10:00:45 +04:00
sd-daemon.c systemd socket activation support 2013-12-12 09:58:50 +04:00
sd-daemon.h systemd socket activation support 2013-12-12 09:58:50 +04:00
security.c security: skip obtaining additional groups for root, as they don't matter 2014-08-06 18:58:44 +04:00
shmem.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
sigframe.c sigframe: cast the pointer to the field ucontext::uc_sigmask to k_rtsigset_t 2014-04-08 15:36:09 +04:00
signalfd.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
sk-inet.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
sk-netlink.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
sk-packet.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
sk-queue.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
sk-tcp.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
sk-unix.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
sockets.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
stats.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
string.c string: Add strlcat helper 2013-11-29 15:36:07 +04:00
sysctl.c sysctl: don't write '\0' at the end of buffer in a sysctl file 2014-08-14 12:21:48 +04:00
sysfs_parse.c Use --root instead of --aufs-root 2014-08-27 14:31:40 +04:00
timerfd.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
tty.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
tun.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
util.c proc: Keep /proc/self cached separately from /proc/pid 2014-09-29 13:21:43 +04:00
uts_ns.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00

README 

criu
====

An utility to checkpoint/restore tasks. Using this tool, you can
freeze a running application (or part of it) and checkpoint it to
a hard drive as a collection of files. You can then use the files
to restore and run the application from the point it was frozen
at. The distinctive feature of the CRIU project is that it is
mainly implemented in user space.

The project home is at http://criu.org

Pages worth starting with are
* Kernel configuration, compilation, etc: http://criu.org/Installation
* A simple example of usage: http://criu.org/Simple_loop
* More sophisticated example with graphical app: http://criu.org/VNC