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blcrcheckpointcontainercontainerscriudmtcphighly-availablelinuxmemory-trackingmigrationparasitepost-copyrestoresnapshotsuspenduserfaultfdzero-downtime
5bdc16238b
We found that linkat for "unsafe" files doesn't work in userns
if a file uid isn't equal to the currect fsuid. This issue was
fixed by changing fsuid before calling linkat. But in this
case we are not able to createa link if a target directory doesn't
have write premissions.
Starting with the 4.3 kernel, it's possible to create links of
"unsafe files":
f2ca379642d7 ("namei: permit linking with CAP_FOWNER in userns")
So we can try to call linkat() without changing fsuid and make one
more attempt with changing fsuid if the first one failed with EPERM.
Signed-off-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
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| crit | ||
| criu | ||
| Documentation | ||
| images | ||
| lib | ||
| scripts | ||
| test | ||
| .gitignore | ||
| .mailmap | ||
| .travis.yml | ||
| COPYING | ||
| CREDITS | ||
| Makefile | ||
| Makefile.install | ||
| Makefile.versions | ||
| README.md | ||
CRIU (Checkpoint and Restore in Userspace)
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
- A simple example of usage
- More sophisticated example with graphical app
How to contribute
- How to submit patches;
- Send all bug reports to mailing list;
- Spread the word about CRIU in social networks;