kernel/linux.git/fs/smb/server/vfs.c, branch linux-7.0.y

Merge tag 'vfs-7.0-rc1.misc.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

2026-02-16T21:00:36+00:00

Pull more misc vfs updates from Christian Brauner: "Features: - Optimize close_range() from O(range size) to O(active FDs) by using find_next_bit() on the open_fds bitmap instead of linearly scanning the entire requested range. This is a significant improvement for large-range close operations on sparse file descriptor tables. - Add FS_XFLAG_VERITY file attribute for fs-verity files, retrievable via FS_IOC_FSGETXATTR and file_getattr(). The flag is read-only. Add tracepoints for fs-verity enable and verify operations, replacing the previously removed debug printk's. - Prevent nfsd from exporting special kernel filesystems like pidfs and nsfs. These filesystems have custom ->open() and ->permission() export methods that are designed for open_by_handle_at(2) only and are incompatible with nfsd. Update the exportfs documentation accordingly. Fixes: - Fix KMSAN uninit-value in ovl_fill_real() where strcmp() was used on a non-null-terminated decrypted directory entry name from fscrypt. This triggered on encrypted lower layers when the decrypted name buffer contained uninitialized tail data. The fix also adds VFS-level name_is_dot(), name_is_dotdot(), and name_is_dot_dotdot() helpers, replacing various open-coded "." and ".." checks across the tree. - Fix read-only fsflags not being reset together with xflags in vfs_fileattr_set(). Currently harmless since no read-only xflags overlap with flags, but this would cause inconsistencies for any future shared read-only flag - Return -EREMOTE instead of -ESRCH from PIDFD_GET_INFO when the target process is in a different pid namespace. This lets userspace distinguish "process exited" from "process in another namespace", matching glibc's pidfd_getpid() behavior Cleanups: - Use C-string literals in the Rust seq_file bindings, replacing the kernel::c_str!() macro (available since Rust 1.77) - Fix typo in d_walk_ret enum comment, add porting notes for the readlink_copy() calling convention change" * tag 'vfs-7.0-rc1.misc.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: fs: add porting notes about readlink_copy() pidfs: return -EREMOTE when PIDFD_GET_INFO is called on another ns nfsd: do not allow exporting of special kernel filesystems exportfs: clarify the documentation of open()/permission() expotrfs ops fsverity: add tracepoints fs: add FS_XFLAG_VERITY for fs-verity files rust: seq_file: replace `kernel::c_str!` with C-Strings fs: dcache: fix typo in enum d_walk_ret comment ovl: use name_is_dot* helpers in readdir code fs: add helpers name_is_dot{,dot,_dotdot} ovl: Fix uninit-value in ovl_fill_real fs: reset read-only fsflags together with xflags fs/file: optimize close_range() complexity from O(N) to O(Sparse)

Merge tag 'v7.0-rc-part1-ksmbd-and-smbdirect-fixes' of git://git.samba.org/ksmbd

2026-02-12T16:31:12+00:00

Pull smb server and smbdirect updates from Steve French: - Fix tcp connection leak - Fix potential use after free when freeing multichannel - Fix locking problem in showing channel list - Locking improvement for tree connection - Fix infinite loop when signing errors - Add /proc interface for monitoring server state - Fixes to avoid mixing iWarp and InfiniBand/RoCEv1/RoCEv2 port ranges used for smbdirect - Fixes for smbdirect credit handling problems, these make the connections more reliable * tag 'v7.0-rc-part1-ksmbd-and-smbdirect-fixes' of git://git.samba.org/ksmbd: (32 commits) ksmbd: fix non-IPv6 build ksmbd: convert tree_conns_lock to rw_semaphore ksmbd: fix missing chann_lock while iterating session channel list ksmbd: add chann_lock to protect ksmbd_chann_list xarray smb: server: correct value for smb_direct_max_fragmented_recv_size smb: client: correct value for smbd_max_fragmented_recv_size smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection() ksmbd: add procfs interface for runtime monitoring and statistics ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths smb: server: make use of rdma_restrict_node_type() smb: client: make use of rdma_restrict_node_type() RDMA/core: introduce rdma_restrict_node_type() smb: client: let send_done handle a completion without IB_SEND_SIGNALED smb: client: let smbd_post_send_negotiate_req() use smbd_post_send() smb: client: fix last send credit problem causing disconnects smb: client: make use of smbdirect_socket.send_io.bcredits smb: client: use smbdirect_send_batch processing smb: client: introduce and use smbd_{alloc, free}_send_io() smb: client: split out smbd_ib_post_send() smb: client: port and use the wait_for_credits logic used by server ...

Merge tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2026-02-10T00:58:28+00:00

Pull vfs 'struct filename' updates from Al Viro: "[Mostly] sanitize struct filename handling" * tag 'pull-filename' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (68 commits) sysfs(2): fs_index() argument is _not_ a pathname alpha: switch osf_mount() to strndup_user() ksmbd: use CLASS(filename_kernel) mqueue: switch to CLASS(filename) user_statfs(): switch to CLASS(filename) statx: switch to CLASS(filename_maybe_null) quotactl_block(): switch to CLASS(filename) chroot(2): switch to CLASS(filename) move_mount(2): switch to CLASS(filename_maybe_null) namei.c: switch user pathname imports to CLASS(filename{,_flags}) namei.c: convert getname_kernel() callers to CLASS(filename_kernel) do_f{chmod,chown,access}at(): use CLASS(filename_uflags) do_readlinkat(): switch to CLASS(filename_flags) do_sys_truncate(): switch to CLASS(filename) do_utimes_path(): switch to CLASS(filename_uflags) chdir(2): unspaghettify a bit... do_fchownat(): unspaghettify a bit... fspick(2): use CLASS(filename_flags) name_to_handle_at(): use CLASS(filename_uflags) vfs_open_tree(): use CLASS(filename_uflags) ...

ksmbd: add procfs interface for runtime monitoring and statistics

2026-02-09T02:25:16+00:00

This patch introduces a /proc filesystem interface to ksmbd, providing visibility into the internal state of the SMB server. This allows administrators and developers to monitor active connections, user sessions, and opened files in real-time without relying on external tools or heavy debugging. Key changes include: - Connection Monitoring (/proc/fs/ksmbd/clients): Displays a list of active network connections, including client IP addresses, SMB dialects, credits, and last active timestamps. - Session Management (/proc/fs/ksmbd/sessions/): Adds a global sessions file to list all authenticated users and their session IDs. - Creates individual session entries (e.g., /proc/fs/ksmbd/sessions/) detailing capabilities (DFS, Multi-channel, etc.), signing/encryption algorithms, and connected tree shares. - File Tracking (/proc/fs/ksmbd/files): Shows all currently opened files across the server, including tree IDs, process IDs (PID), access modes (daccess/saccess), and oplock/lease states. - Statistics & Counters: Implements internal counters for global server metrics, such as the number of tree connections, total sessions, and processed read/write bytes. Signed-off-by: Hyunchul Lee Signed-off-by: Bahubali B Gumaji Signed-off-by: Sang-Soo Lee Signed-off-by: Namjae Jeon Signed-off-by: Steve French

fs: add helpers name_is_dot{,dot,_dotdot}

2026-01-29T09:06:59+00:00

Rename the helper is_dot_dotdot() into the name_ namespace and add complementary helpers to check for dot and dotdot names individually. Signed-off-by: Amir Goldstein Link: https://patch.msgid.link/20260128132406.23768-3-amir73il@gmail.com Reviewed-by: Eric Biggers Signed-off-by: Christian Brauner

smb: server: fix comment for ksmbd_vfs_kern_path_start_removing()

2026-01-23T00:13:44+00:00

This was found by sparse... Fixes: 1ead2213dd7d ("smb/server: use end_removing_noperm for for target of smb2_create_link()") Cc: Namjae Jeon Cc: Steve French Cc: Tom Talpey Cc: NeilBrown Cc: Christian Brauner Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher Acked-by: Namjae Jeon Signed-off-by: Steve French

ksmbd: use CLASS(filename_kernel)

2026-01-16T17:52:04+00:00

Signed-off-by: Al Viro

ksmbd_vfs_rename(): vfs_path_parent_lookup() accepts ERR_PTR() as name

2026-01-13T20:18:07+00:00

no need to check in the caller Signed-off-by: Al Viro

ksmbd_vfs_path_lookup(): vfs_path_parent_lookup() accepts ERR_PTR() as name

2026-01-13T20:18:07+00:00

no need to check in the caller Signed-off-by: Al Viro

ksmbd: convert comma to semicolon

2025-12-15T00:35:56+00:00

Replace comma between expressions with semicolons. Using a ',' in place of a ';' can have unintended side effects. Although that is not the case here, it is seems best to use ';' unless ',' is intended. Found by inspection. No functional change intended. Compile tested only. Signed-off-by: Chen Ni Acked-by: Namjae Jeon Signed-off-by: Steve French