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3cdc20e72c
When transferring ownership information to the client the k*ids are translated into raw *ids before they are sent over the wire. The function currently erroneously translates the k*ids according to the mount's idmapping. Instead, reporting the owning *ids to userspace the underlying k*ids need to be mapped up in the caller's user namespace. This is how stat() works. The caller in this instance is ksmbd itself and ksmbd always runs in the initial user namespace. Translate according to that taking any potential idmapped mounts into account. Switch to from_k*id_munged() which ensures that the overflow*id is returned instead of the (*id_t)-1 when the k*id can't be translated. Cc: Steve French <stfrench@microsoft.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Namjae Jeon <namjae.jeon@samsung.com> Cc: Hyunchul Lee <hyc.lee@gmail.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: linux-cifs@vger.kernel.org Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.