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Commit 'LINUX: Return NULL for afs_linux_raw_open error' (f6af4a155) updated afs_linux_raw_open to return NULL on some errors, but still panics if obtaining the dentry fails. Commit 'afs: Verify osi_UFSOpen worked' (c6b61a451) updated callers of osi_UFSOpen to verify whether or not the open was successful. This meant osi_UFSOpen (and routines it calls) could pass back an error indication rather than panic when an error is encountered. Update afs_linux_raw_open to return a failure instead of panic if unable to obtain a dentry. Update osi_UFSOpen to return a NULL instead of panic if unable to obtain memory or fails to open the file. All callers of osi_UFSOpen handle a fail return, though some will still issue a panic. Update afs_linux_readpage_fastpath and afs_linux_readpages to not panic if afs_linux_raw_open fails. Instead of panic, return an error. For testing, an error can be forced by removing a file from the cache directory. Note this work is based on a commit by pruiter@sinenomine.net Change-Id: Ic47e4868b4f81d99fbe3b2e4958778508ae4851f Reviewed-on: https://gerrit.openafs.org/14242 Reviewed-by: Andrew Deason <adeason@sinenomine.net> Reviewed-by: Mark Vitale <mvitale@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu> Tested-by: BuildBot <buildbot@rampaginggeek.com>
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.