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The GetInstanceParm and GetStatus bosserver RPCs return output strings by first allocating a 256 byte buffer then calling the bnode operations bnode_GetParm() and bnode_GetString() to fill those buffers. The RPC output strings are automatically freed by XDR. In order to support large output strings in the future, change these bnode operations to allocate the output strings and to use safe string functions to duplicate and format strings. Update the ez, cron, fs, and dafs getstring and getparm operations to allocate the output string or return an error. Return BZIO over the wire when a string cannot be allocated, since ENOMEM is not a portable wire error code. (Use BZIO to be consistent existing code added in commit fda2bc874751ca479365dc6389c0eebb41a0bda1 (Allocate pathname buffers dynamically). Commit ea276e83e3 (OPENAFS-SA-2019-001: Skip server OUT args on error) is a prerequisite for this change. Change-Id: Id16184efc95d614846b912177b220c8e87b7a88b Reviewed-on: https://gerrit.openafs.org/14766 Reviewed-by: Andrew Deason <adeason@sinenomine.net> Reviewed-by: Cheyenne Wills <cwills@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.