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The directory package (src/dir) salvage routines DirOK and DirSalvage check a global variable 'DErrno' to distinguish logical errors (e.g. short read) from physical errors (e.g. EIO). However, since the original IBM import, this logic has not worked correctly because there is no longer any code that sets the value of DErrno - its value is always zero. Instead, modify all implementations of ReallyRead to optionally return the errno for low-level IO errors. Also, create a new userspace-only variant - DReadWithErrno() - of the src/dir/buffer.c version of DRead (the version called by DirOK and DirSalvage, and the only caller of ReallyRead) to return the ReallyRead errno upon request. Also create an analogous variant of afs_dir_GetBlobs, afs_dir_GetBlobsWithErrno(). Finally, convert DirOK and DirSalvage to use the new variants and replace DErrno with equivalent logic. Remove all other references to DErrno. Change-Id: I3de182ce49c1682572142da594af5dc2c00ede74 Reviewed-on: https://gerrit.openafs.org/13798 Reviewed-by: Andrew Deason <adeason@sinenomine.net> Tested-by: BuildBot <buildbot@rampaginggeek.com> Reviewed-by: Michael Meffie <mmeffie@sinenomine.net> Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
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.