b79e87e070
An NFSv4.1 client might close a file after the user who opened it has logged off. In this case the user's credentials may no longer be valid, if they are e.g. kerberos credentials that have expired. NFSv4.1 has a mechanism to allow the client to use machine credentials to close a file. However due to a short-coming in the RFC, a CLOSE with those credentials may not be possible if the file in question isn't exported to the same security flavor - the required PUTFH must be rejected when this is the case. Specifically if a server and client support kerberos in general and have used it to form a machine credential, but the file is only exported to "sec=sys", a PUTFH with the machine credentials will fail, so CLOSE is not possible. As RPC_AUTH_UNIX (used by sec=sys) credentials can never expire, there is no value in using the machine credential in place of them. So in that case, just use the users credentials for CLOSE etc, as you would in NFSv4.0 Signed-off-by: Neil Brown <neilb@suse.com> Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.