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* Fix snapshot automounting with GrSecurity constify plugin.Massimo Maggi2012-08-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | ./configure erroneously detects absence of dops->d_automount when built against a GrSecurity patched kernel. Summerized error message found in config.log: checking whether dops->d_automount() exists ... In function 'main': ... error: constified variable 'dops' cannot be local The "dops" variable cannot be a local variable, so it's moved to the global scope. This test also fails if the prototype of the dops->d_automount function pointer is changed. Signed-off-by: Massimo Maggi <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Signed-off-by: Richard Yao <[email protected]> Closes #884
* Add .zfs control directoryBrian Behlendorf2012-03-221-0/+23
Add support for the .zfs control directory. This was accomplished by leveraging as much of the existing ZFS infrastructure as posible and updating it for Linux as required. The bulk of the core functionality is now all there with the following limitations. *) The .zfs/snapshot directory automount support requires a 2.6.37 or newer kernel. The exception is RHEL6.2 which has backported the d_automount patches. *) Creating/destroying/renaming snapshots with mkdir/rmdir/mv in the .zfs/snapshot directory works as expected. However, this functionality is only available to root until zfs delegations are finished. * mkdir - create a snapshot * rmdir - destroy a snapshot * mv - rename a snapshot The following issues are known defeciences, but we expect them to be addressed by future commits. *) Add automount support for kernels older the 2.6.37. This should be possible using follow_link() which is what Linux did before. *) Accessing the .zfs/snapshot directory via NFS is not yet possible. The majority of the ground work for this is complete. However, finishing this work will require resolving some lingering integration issues with the Linux NFS kernel server. *) The .zfs/shares directory exists but no futher smb functionality has yet been implemented. Contributions-by: Rohan Puri <[email protected]> Contributiobs-by: Andrew Barnes <[email protected]> Signed-off-by: Brian Behlendorf <[email protected]> Closes #173