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Through a series of Linux 6.3 commits starting with: 'f2fs: project ids aren't idmapped' (64b4cdf22f) and ending with 'fs: move mnt_idmap' (3707d84c13) the inode operations functions were changed to take a mnt_idmap structure instead of a user_namespace structure. These were pulled in via the the merge commit: 'Pull vfs idmapping updates from Christian Brauner' (05e6295f7b) The commit message for the merge contains background and overall information for this conversion. The above change simply changes the functions to use a different structure (mnt_idmap instead of user_namespace). For afs, it is a simple change to swap the structures. But for some of the Linux calls (generic_fillattr(), setattr_prepare(), and inode_op->setattr()) we would like to use the Linux symbol nop_mnt_idmap, but that symbol is exported as GPL only. Instead, we will obtain its address from the current task structure at libafs initialization (much the same way as obtaining current user namespace for afs_ns). Add autoconf tests to determine if inode_operations.create() uses the mnt_idmap structure. If so set a generic configure define for "IOP_TAKES_MNT_IDMAP". Update afs's inode operations functions to take and use a mnt_idmap instead of a user_namespace. At libafs initialization, obtain the mnt_idmap from the current task and save it as an afs global variable, afs_mnt_idmap, to be used where needed. Reviewed-on: https://gerrit.openafs.org/15347 Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Cheyenne Wills <cwills@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> (cherry picked from commit 858ee34545e57acab1e4e5813cd1b9a011538b9e) Change-Id: If89c6f401db04826ef45de83b91240f106cca616 Reviewed-on: https://gerrit.openafs.org/15389 Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Andrew Deason <adeason@sinenomine.net> Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Michael Meffie <mmeffie@sinenomine.net> Reviewed-by: Kailas Zadbuke <kailashsz@in.ibm.com> Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>
AFS is a distributed file system that enables users to share and access all of the files stored in a network of computers as easily as they access the files stored on their local machines. The file system is called distributed for this exact reason: files can reside on many different machines, but are available to users on every machine. OpenAFS 1.0 was originally released by IBM under the terms of the IBM Public License 1.0 (IPL10). For details on IPL10 see the LICENSE file in this directory. The current OpenAFS distribution is licensed under a combination of the IPL10 and many other licenses as granted by the relevant copyright holders. The LICENSE file in this directory contains more details, thought it is not a comprehensive statement. See INSTALL for information about building and installing OpenAFS on various platforms. See CODING for developer information and guidelines. See NEWS for recent changes to OpenAFS.