linux/linux-stable.git - Linux kernel stable tree

Age	Commit message (Collapse)	Author
2025-01-31	smb3: add support for IAKerb	Steve French
	There are now more servers which advertise support for IAKerb (passthrough Kerberos authentication via proxy). IAKerb is a public extension industry standard Kerberos protocol that allows a client without line-of-sight to a Domain Controller to authenticate. There can be cases where we would fail to mount if the server only advertises the OID for IAKerb in SPNEGO/GSSAPI. Add code to allow us to still upcall to userspace in these cases to obtain the Kerberos ticket. Signed-off-by: Steve French <stfrench@microsoft.com>
2024-11-21	CIFS: New mount option for cifs.upcall namespace resolution	Ritvik Budhiraja
	In the current implementation, the SMB filesystem on a mount point can trigger upcalls from the kernel to the userspace to enable certain functionalities like spnego, dns_resolution, amongst others. These upcalls usually either happen in the context of the mount or in the context of an application/user. The upcall handler for cifs, cifs.upcall already has existing code which switches the namespaces to the caller's namespace before handling the upcall. This behaviour is expected for scenarios like multiuser mounts, but might not cover all single user scenario with services such as Kubernetes, where the mount can happen from different locations such as on the host, from an app container, or a driver pod which does the mount on behalf of a different pod. This patch introduces a new mount option called upcall_target, to customise the upcall behaviour. upcall_target can take 'mount' and 'app' as possible values. This aids use cases like Kubernetes where the mount happens on behalf of the application in another container altogether. Having this new mount option allows the mount command to specify where the upcall should happen: 'mount' for resolving the upcall to the host namespace, and 'app' for resolving the upcall to the ns of the calling thread. This will enable both the scenarios where the Kerberos credentials can be found on the application namespace or the host namespace to which just the mount operation is "delegated". Reviewed-by: Shyam Prasad <shyam.prasad@microsoft.com> Reviewed-by: Bharath S M <bharathsm@microsoft.com> Reviewed-by: Ronnie Sahlberg <ronniesahlberg@gmail.com> Signed-off-by: Ritvik Budhiraja <rbudhiraja@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-11-13	cifs: spnego: add ';' in HOST_KEY_LEN	Anastasia Belova
	"host=" should start with ';' (as in cifs_get_spnego_key) So its length should be 6. Found by Linux Verification Center (linuxtesting.org) with SVACE. Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Fixes: 7c9c3760b3a5 ("[CIFS] add constants for string lengths of keynames in SPNEGO upcall string") Signed-off-by: Anastasia Belova <abelova@astralinux.ru> Co-developed-by: Ekaterina Esina <eesina@astralinux.ru> Signed-off-by: Ekaterina Esina <eesina@astralinux.ru> Signed-off-by: Steve French <stfrench@microsoft.com>
2023-05-24	smb: move client and server files to common directory fs/smb	Steve French
	Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko and helper modules) to new fs/smb subdirectory: fs/cifs --> fs/smb/client fs/ksmbd --> fs/smb/server fs/smbfs_common --> fs/smb/common Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>