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no edit summary
The criu utility dumps the state of processes/containers into a set of image files. This article describes the format of them.
The criu utility dumps the state of processes/containers into a set of image files. This article describes the format of them.
== Types of image files ==
== Types of image files ==
| inventory || single-entry || Top level description of images || - || inventory.proto
| inventory || single-entry || Top level description of images || - || inventory.proto
|-
|-
| fdinfo || array || Open file descriptors || - || fdinfo.proto
| fdinfo || array || [[Fdinfo-engine|Open file descriptors]] || - || fdinfo.proto
|-
|-
| reg-files || array || Paths to files opened with <code>open(2)</code> syscall || - || regfile.proto
| reg-files || array || Paths to [[:Category:Files|files]] opened with <code>open(2)</code> syscall || - || regfile.proto
|-
|-
| eventfd || array || Eventfd file information || - || eventfd.proto
| eventfd || array || Eventfd file information || - || eventfd.proto
| core || single-entry || Core process info and (name, sigmask, itimers, etc.) arch-dependent information (registers, etc.) || - || core.proto
| core || single-entry || Core process info and (name, sigmask, itimers, etc.) arch-dependent information (registers, etc.) || - || core.proto
|-
|-
| mm || single-entry || Address space generic information (segments, exe file, etc.) || - || mm.proto
| mm || single-entry || [[Memory dumping and restoring|Address space]] information (VMAs, segments, exe file, etc.) || - || mm.proto
|-
|-
| pipes || array || Pipes information || - || pipe.proto
| pipes || array || Pipes information || - || pipe.proto
| fifo-data || array || Contents of FIFOs || same as in pipes-data || pipe-data.proto
| fifo-data || array || Contents of FIFOs || same as in pipes-data || pipe-data.proto
|-
|-
| pstree || array || Process tree linkage || - || pstree.proto
| pstree || array || Process [[tree after restore|tree linkage]] || - || pstree.proto
|-
|-
| ids || single || IDs of objects (mm, files, sihand, etc.) and namespaces || - || core.proto
| ids || single || IDs of objects (mm, files, sihand, etc.) and namespaces || - || core.proto
| sigacts || array || Signal handling map || - || sa.proto
| sigacts || array || Signal handling map || - || sa.proto
|-
|-
| unixsk || array || Unix domain sockets || - || sk-unix.proto
| unixsk || array || [[Unix sockets]] || - || sk-unix.proto
|-
|-
| inetsk || array || PF_INET sockets, both IPv4 and IPv6 || - || sk-inet.proto
| inetsk || array || PF_INET sockets, both IPv4 and IPv6 || - || sk-inet.proto
| ghost-file || single-entry || Ghost [[invisible files]] || Right after the entry up to the EOF goes the contents of the file || ghost-file.proto
| ghost-file || single-entry || Ghost [[invisible files]] || Right after the entry up to the EOF goes the contents of the file || ghost-file.proto
|-
|-
| tcp-stream || single-entry || TCP connection state (including data in queues) || <code>entry.inq_len</code> bytes of in-queue data followed by <code>entry.outq_len</code> bytes of out-queue data || tcp-stream.proto
| tcp-stream || single-entry || [[TCP connection]] state (including data in queues) || <code>entry.inq_len</code> bytes of in-queue data followed by <code>entry.outq_len</code> bytes of out-queue data || tcp-stream.proto
|-
|-
| mountpoints || array || Mountpoints information || - || mnt.proto
| mountpoints || array || [[Mountpoints]] information || - || mnt.proto
|-
|-
| utsns || single-entry || Uname nodename and domainname of a UTS namespace || - || utsns.proto
| utsns || single-entry || Uname nodename and domainname of a UTS namespace || - || utsns.proto
|-
|-
| tty || array || Information about opened tty-s || - || tty.proto
| tty || array || Information about opened [[TTYs]] || - || tty.proto
|-
|-
| tty-info || array || Termios and similar stuff about tty-s || - || tty.proto
| tty-info || array || Termios and similar stuff about [[TTYs]] || - || tty.proto
|-
|-
| packetsk || array || Info about PF_PACKET sockets || - || packet-sock.proto
| packetsk || array || Info about PF_PACKET sockets || - || packet-sock.proto
|-
|-
| netdev || array || Info about network devices || - || netdev.proto
| netdev || array || Info about [[:Category:Network|network]] devices || - || netdev.proto
|}
|}
* [[What's bad with V1 images]]
* [[What's bad with V1 images]]
* [[Image field merging]]
* [[Image field merging]]
* [[Memory dumps]]
[[Category:Development]]
[[Category:Development]]
[[Category:Images]]
[[Category:Images]]
[[Category:Outdated]]