kernel/linux.git/fs/smb/common, branch v6.12.80

smb: smbdirect: introduce smbdirect_socket_parameters

2025-07-06T09:01:42+00:00

[ Upstream commit dce8047f4725d4469c0813ff50c4115fc2d0b628 ] This is the next step in the direction of a common smbdirect layer. Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: Namjae Jeon Cc: Hyunchul Lee Cc: Meetakshi Setiya Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Stable-dep-of: 43e7e284fc77 ("cifs: Fix the smbd_response slab to allow usercopy") Signed-off-by: Sasha Levin

smb: smbdirect: add smbdirect_socket.h

2025-07-06T09:01:42+00:00

[ Upstream commit 22234e37d7e97652cb53133009da5e14793d3c10 ] This abstracts the common smbdirect layer. Currently with just a few things in it, but that will change over time until everything is in common. Will be used in client and server in the next commits Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: Namjae Jeon Cc: Hyunchul Lee Cc: Meetakshi Setiya Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Stable-dep-of: 43e7e284fc77 ("cifs: Fix the smbd_response slab to allow usercopy") Signed-off-by: Sasha Levin

smb: smbdirect: add smbdirect.h with public structures

2025-07-06T09:01:42+00:00

[ Upstream commit 7e136a718633b2c54764e185f3bfccf0763fc1dd ] Will be used in client and server in the next commits. Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: Namjae Jeon Cc: Hyunchul Lee CC: Meetakshi Setiya Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Stable-dep-of: 43e7e284fc77 ("cifs: Fix the smbd_response slab to allow usercopy") Signed-off-by: Sasha Levin

smb: smbdirect: add smbdirect_pdu.h with protocol definitions

2025-07-06T09:01:42+00:00

[ Upstream commit 00fab6cf323fa5850e6cbe283b23e605e6e97912 ] This is just a start moving into a common smbdirect layer. It will be used in the next commits... Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: Namjae Jeon Cc: Hyunchul Lee Cc: Meetakshi Setiya Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Stable-dep-of: 43e7e284fc77 ("cifs: Fix the smbd_response slab to allow usercopy") Signed-off-by: Sasha Levin

smb: client: Store original IO parameters and prevent zero IO sizes

2025-05-29T09:02:02+00:00

[ Upstream commit 287906b20035a04a234d1a3c64f760a5678387be ] During mount option processing and negotiation with the server, the original user-specified rsize/wsize values were being modified directly. This makes it impossible to recover these values after a connection reset, leading to potential degraded performance after reconnection. The other problem is that When negotiating read and write sizes, there are cases where the negotiated values might calculate to zero, especially during reconnection when server->max_read or server->max_write might be reset. In general, these values come from the negotiation response. According to MS-SMB2 specification, these values should be at least 65536 bytes. This patch improves IO parameter handling: 1. Adds vol_rsize and vol_wsize fields to store the original user-specified values separately from the negotiated values 2. Uses got_rsize/got_wsize flags to determine if values were user-specified rather than checking for non-zero values, which is more reliable 3. Adds a prevent_zero_iosize() helper function to ensure IO sizes are never negotiated down to zero, which could happen in edge cases like when server->max_read/write is zero The changes make the CIFS client more resilient to unusual server responses and reconnection scenarios, preventing potential failures when IO sizes are calculated to be zero. Signed-off-by: Wang Zhaolong Signed-off-by: Steve French Signed-off-by: Sasha Levin

smb: common: change the data type of num_aces to le16

2025-04-10T12:39:29+00:00

[ Upstream commit 62e7dd0a39c2d0d7ff03274c36df971f1b3d2d0d ] 2.4.5 in [MS-DTYP].pdf describe the data type of num_aces as le16. AceCount (2 bytes): An unsigned 16-bit integer that specifies the count of the number of ACE records in the ACL. Change it to le16 and add reserved field to smb_acl struct. Reported-by: Igor Leite Ladessa Tested-by: Igor Leite Ladessa Signed-off-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Sasha Levin

cifs: Treat unhandled directory name surrogate reparse points as mount directory nodes

2025-03-22T19:54:19+00:00

[ Upstream commit b587fd128660d48cd2122f870f720ff8e2b4abb3 ] If the reparse point was not handled (indicated by the -EOPNOTSUPP from ops->parse_reparse_point() call) but reparse tag is of type name surrogate directory type, then treat is as a new mount point. Name surrogate reparse point represents another named entity in the system. From SMB client point of view, this another entity is resolved on the SMB server, and server serves its content automatically. Therefore from Linux client point of view, this name surrogate reparse point of directory type crosses mount point. Signed-off-by: Pali Rohár Signed-off-by: Steve French Signed-off-by: Sasha Levin

smb: Update comments about some reparse point tags

2024-09-29T22:28:40+00:00

NFS-style reparse points are recognized only by the Windows NFS server 2012 and new. Windows 8 does not contain Windows NFS server, so these reparse points are not used on Windows 8. Reparse points with IO_REPARSE_TAG_AF_UNIX tag were primarily introduced for native Win32 AF_UNIX sockets and later were re-used by also by WSL: https://devblogs.microsoft.com/commandline/af_unix-comes-to-windows/ https://devblogs.microsoft.com/commandline/windowswsl-interop-with-af_unix/ Signed-off-by: Pali Rohár Signed-off-by: Steve French

ksmbd: Correct typos in multiple comments across various files

2024-09-26T02:33:22+00:00

Fixed some confusing typos that were currently identified witch codespell, the details are as follows: -in the code comments: fs/smb/common/smb2pdu.h:9: specfication ==> specification fs/smb/common/smb2pdu.h:494: usally ==> usually fs/smb/common/smb2pdu.h:1064: Attrubutes ==> Attributes fs/smb/server/connection.c:28: cleand ==> cleaned fs/smb/server/ksmbd_netlink.h:216: struture ==> structure fs/smb/server/oplock.c:799: conains ==> contains fs/smb/server/oplock.c:1487: containted ==> contained fs/smb/server/server.c:282: proccessing ==> processing fs/smb/server/smb_common.c:491: comforms ==> conforms fs/smb/server/xattr.h:102: ATTRIBUITE ==> ATTRIBUTE Signed-off-by: Shen Lichuan Acked-by: Namjae Jeon Signed-off-by: Steve French

smb: add comment to STATUS_MCA_OCCURED

2024-09-15T15:42:44+00:00

Explained why the typo was not corrected. Signed-off-by: ChenXiaoSong Reviewed-by: Namjae Jeon Signed-off-by: Steve French