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Pavel Emelyanov 5eb39aad4d bfd: Multiple buffers management (v2) 
I plan to re-use the bfd engine for images buffering. Right
now this engine uses one buffer that gets reused by all
bfdopen()-s. This works for current usage (one-by-pne proc
files access), but for images we'll need more buffers.

So this patch just puts buffers in a list and organizes a
stupid R-R with refill on it.

v2:
  Check for buffer allocation errors
  Print buffer mem pointer in debug

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Andrew Vagin <avagin@parallels.com>
2014-09-29 15:37:14 +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 bfd: Multiple buffers management (v2) 2014-09-29 15:37:14 +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 cgroups: allow to execute fini_cgroups a few times 2014-09-04 16:35:43 +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 v2 page-read: rework open_page_read to use in shmem restore 2014-03-18 11:48:58 +04:00
cr-dump.c dump: Don't close pid-proc in vain 2014-09-29 13:22:21 +04:00
cr-exec.c criu: Several formatting fixes 2014-01-14 09:33:19 +04:00
cr-restore.c ptrace: Factor out pie stopping code 2014-09-23 20:36:10 +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 show: Print filelocks.img pids as %u 2014-08-12 15:45:34 +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 anon-inode: Don't readlink fd/fd multiple times 2014-02-02 22:14:29 +04:00
eventpoll.c eventpoll: merge eventpoll tfd into eventpoll image 2014-09-03 20:51:40 +04:00
fifo.c files: Fix open_path() to provide mntns root fd to callbacks 2014-06-06 12:20:02 +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 locks: fix up a device returned by stat() for btrfs (v4) 2014-09-05 16:02:40 +04:00
files-ext.c plugin: Rework plugins API, v2 2014-09-03 20:48:36 +04:00
files-reg.c vma: Reshuffle the struct vma_area 2014-09-29 13:19:55 +04:00
files.c fd: Close caches proc-pid stuff before restoring files 2014-09-29 13:21:31 +04:00
fsnotify.c fsnotify: Proceed dumping even if queue has data 2014-09-05 16:00:46 +04:00
image-desc.c locks: Fix restore from v1.2 images 2014-08-20 17:38:36 +04:00
image.c cg: Restore tasks into proper cgroups 2014-05-27 23:48:06 +04:00
ipc_ns.c ipc: set the msgmni sysctl after auto_msgmni 2014-08-14 12:21:43 +04:00
irmap.c mnt: Turn mntns_get_root_fd into accepting mnt ns_id 2014-04-23 02:31:16 +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 vma: Reshuffle the struct vma_area 2014-09-29 13:19:55 +04:00
mount.c mntns: don't dump criu's namespace 2014-09-24 17:30:23 +04:00
namespaces.c ns: Dump namespaces in parallel 2014-09-23 20:43:33 +04:00
net.c scripts: Use numeric script names 2014-09-05 13:48:26 +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 iov: Add iovec2pagemap() helper 2014-06-20 16:35:52 +04:00
page-xfer.c page-server: assign opts.ps_port to sin_port in autobind case 2014-09-22 12:55:12 +04:00
pagemap-cache.c pagemap-cache: Use page.h helpers 2014-02-21 16:29:41 +04:00
parasite-syscall.c ptrace: Factor out pie stopping code 2014-09-23 20:36:10 +04:00
pipes.c crtools: move pid_rst_prio to pid.h 2013-11-06 18:18:12 +04:00
plugin.c plugin: Rework plugins API, v2 2014-09-03 20:48:36 +04:00
proc_parse.c filemap: Get vma mnt_id early 2014-09-29 13:20:55 +04:00
protobuf-desc.c timerfd: Add protobuf entries into the image 2014-08-06 19:18:34 +04:00
protobuf.c img: Add ability to check whether optional image collection happened 2014-08-12 14:38:22 +04:00
pstree.c helpers: Create helpers with shared files and fs 2014-09-18 20:27:21 +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 shmem: Fix format of printing shmem addresses 2014-08-19 13:00:09 +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 anon-inode: Don't readlink fd/fd multiple times 2014-02-02 22:14:29 +04:00
sk-inet.c tcp: don't forget to wake up the port->users futex 2014-07-08 17:43:54 +04:00
sk-netlink.c util: add a function to check output data in a file descriptor 2014-09-02 16:25:50 +04:00
sk-packet.c vma: Turn embeded VmaEntry on vma_area into pointer 2014-02-04 11:44:01 +04:00
sk-queue.c crtools: move pid_rst_prio to pid.h 2013-11-06 18:18:12 +04:00
sk-tcp.c criu: rename current_ns_mask to root_ns_mask (v2) 2014-04-21 22:38:33 +04:00
sk-unix.c plugin: Rework plugins API, v2 2014-09-03 20:48:36 +04:00
sockets.c criu: rename current_ns_mask to root_ns_mask (v2) 2014-04-21 22:38:33 +04:00
stats.c stats: Properly initialize dump stats 2014-08-12 14:37:51 +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 criu: Drop redundant newline from pr_perror 2014-08-22 19:22:39 +04:00
tty.c tty: open tty-s with O_NOCTTY 2014-08-15 13:28:16 +04:00
tun.c criu: rename current_ns_mask to root_ns_mask (v2) 2014-04-21 22:38:33 +04:00
util.c proc: Keep /proc/self cached separately from /proc/pid 2014-09-29 13:21:43 +04:00
uts_ns.c crtools: move pid_rst_prio to pid.h 2013-11-06 18:18:12 +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