Namjae Jeon [Fri, 27 Aug 2021 01:18:05 +0000 (10:18 +0900)]
ksmbd: fix __write_overflow warning in ndr_read_string
Dan reported __write_overflow warning in ndr_read_string.
CC [M] fs/ksmbd/ndr.o
In file included from ./include/linux/string.h:253,
from ./include/linux/bitmap.h:11,
from ./include/linux/cpumask.h:12,
from ./arch/x86/include/asm/cpumask.h:5,
from ./arch/x86/include/asm/msr.h:11,
from ./arch/x86/include/asm/processor.h:22,
from ./arch/x86/include/asm/cpufeature.h:5,
from ./arch/x86/include/asm/thread_info.h:53,
from ./include/linux/thread_info.h:60,
from ./arch/x86/include/asm/preempt.h:7,
from ./include/linux/preempt.h:78,
from ./include/linux/spinlock.h:55,
from ./include/linux/wait.h:9,
from ./include/linux/wait_bit.h:8,
from ./include/linux/fs.h:6,
from fs/ksmbd/ndr.c:7:
In function memcpy,
inlined from ndr_read_string at fs/ksmbd/ndr.c:86:2,
inlined from ndr_decode_dos_attr at fs/ksmbd/ndr.c:167:2:
./include/linux/fortify-string.h:219:4: error: call to __write_overflow
declared with attribute error: detected write beyond size of object
__write_overflow();
^~~~~~~~~~~~~~~~~~
This seems to be a false alarm because hex_attr size is always smaller
than n->length. This patch fix this warning by allocation hex_attr with
n->length.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Namjae Jeon [Sat, 21 Aug 2021 14:26:01 +0000 (23:26 +0900)]
ksmbd: fix permission check issue on chown and chmod
When commanding chmod and chown on cifs&ksmbd, ksmbd allows it without file
permissions check. There is code to check it in settattr_prepare.
Instead of setting the inode directly, update the mode and uid/gid
through notify_change.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Namjae Jeon [Fri, 20 Aug 2021 06:38:06 +0000 (15:38 +0900)]
ksmbd: don't set FILE DELETE and FILE_DELETE_CHILD in access mask by default
When there is no dacl in request, ksmbd send dacl that coverted by using
file permission. This patch don't set FILE DELETE and FILE_DELETE_CHILD
in access mask by default.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Thu, 12 Aug 2021 01:23:08 +0000 (10:23 +0900)]
ksmbd: smbd: fix kernel oops during server shutdown
if server shutdown happens in the situation that
there are connections, workqueue could be destroyed
before queueing disconnect work.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Namjae Jeon [Thu, 12 Aug 2021 23:15:33 +0000 (08:15 +0900)]
ksmbd: remove select FS_POSIX_ACL in Kconfig
ksmbd is forcing to turn on FS_POSIX_ACL in Kconfig to use vfs acl
functions(posix_acl_alloc, get_acl, set_posix_acl). OpenWRT and other
platform doesn't use acl and this config is disable by default in
kernel. This patch use IS_ENABLED() to know acl config is enable and use
acl function if it is enable.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
To negotiate either the SMB2 protocol or SMB protocol, a client must
send a SMB_COM_NEGOTIATE message containing the list of dialects it
supports, to which the server will respond with either a
SMB_COM_NEGOTIATE or a SMB2_NEGOTIATE response.
The current implementation responds with the highest common dialect,
rather than looking explicitly for "SMB 2.???" and "SMB 2.002", as
indicated in [MS-SMB2]:
[MS-SMB2] 3.3.5.3.1:
If the server does not implement the SMB 2.1 or 3.x dialect family,
processing MUST continue as specified in 3.3.5.3.2.
Otherwise, the server MUST scan the dialects provided for the dialect
string "SMB 2.???". If the string is not present, continue to section
3.3.5.3.2. If the string is present, the server MUST respond with an
SMB2 NEGOTIATE Response as specified in 2.2.4.
[MS-SMB2] 3.3.5.3.2:
The server MUST scan the dialects provided for the dialect string "SMB
2.002". If the string is present, the client understands SMB2, and the
server MUST respond with an SMB2 NEGOTIATE Response.
This is an issue if a client attempts to negotiate SMB3.1.1 using
a SMB_COM_NEGOTIATE, as it will trigger the following NULL pointer
dereference:
Dan Carpenter [Sun, 1 Aug 2021 23:14:03 +0000 (08:14 +0900)]
ksmbd: fix an oops in error handling in smb2_open()
If smb2_get_name() then name is an error pointer. In the clean up
code, we try to kfree() it and that will lead to an Oops. Set it to
NULL instead.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
ksmbd: add ipv6_addr_v4mapped check to know if connection from client is ipv4
ksmbd create socket with IPv6 to listen both IPv4 and IPv6 connection
from client. Server should send IP addresses of NICs through network
interface info response. If Client connection is IPv4, Server should
fill IPv4 address in response buffer. But ss_family is always PF_INET6
on IPv6 socket. So This patch add ipv6_addr_v4mapped check to know
client connection is IPv4.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Dan report a warning that is missing error code in smb2_lock
from static checker. This patch add error code to avoid static checker
warning.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
ksmbd: Return STATUS_OBJECT_PATH_NOT_FOUND if smb2_creat() returns ENOENT
Both Windows 10's SMB server and samba return STATUS_OBJECT_PATH_NOT_FOUND
when trying to access a nonexistent path.
This fixes Windows 10 File History tool. The latter relies on the server
returning STATUS_OBJECT_PATH_NOT_FOUND to figure out what part of the
target path needs to be created. Returning STATUS_OBJECT_NAME_INVALID
will make it stop and display an error to the user.
Signed-off-by: Marios Makassikis <mmakassikis@freebox.fr> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Fri, 23 Jul 2021 04:01:06 +0000 (13:01 +0900)]
ksmbd: fix -Wstringop-truncation warnings
Kernel test bot reports the following warnings:
In function 'ndr_write_string',
inlined from 'ndr_encode_dos_attr' at fs/ksmbd/ndr.c:136:3:
>> fs/ksmbd/ndr.c:70:2: warning: 'strncpy' destination unchanged after
copying no bytes [-Wstringop-truncation]
70 | strncpy(PAYLOAD_HEAD(n), value, sz);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'ndr_write_string',
inlined from 'ndr_encode_dos_attr' at fs/ksmbd/ndr.c:134:3:
>> fs/ksmbd/ndr.c:70:2: warning: 'strncpy' output truncated before
terminating nul copying as many bytes from a string as its length
[-Wstringop-truncation]
70 | strncpy(PAYLOAD_HEAD(n), value, sz);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/ksmbd/ndr.c: In function 'ndr_encode_dos_attr':
fs/ksmbd/ndr.c:134:3: note: length computed here
134 | ndr_write_string(n, hex_attr, strlen(hex_attr));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
ksmbd: add support for negotiating signing algorithm
Support for faster packet signing (using GMAC instead of CMAC) can
now be negotiated to some newer servers, including Windows.
See MS-SMB2 section 2.2.3.17.
This patch adds support for sending the new negotiate context with two
supported signing algorithms(AES-CMAC, HMAC-SHA256).
If client add support for AES_GMAC, Server will be supported later
depend on it.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
ksmbd: set STATUS_INVALID_PARAMETER error status if credit charge is invalid
MS-SMB2 specification describe :
If the calculated credit number is greater than the CreditCharge,
the server MUST fail the request with the error code
STATUS_INVALID_PARAMETER.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
ksmbd: fix wrong error status return on session setup
When user insert wrong password, ksmbd return STATUS_INVALID_PARAMETER
error status to client. It will make user confusing whether it is not
password problem. This patch change error status to
STATUS_LOGON_FAILURE. and return STATUS_INSUFFICIENT_RESOURCES if memory
allocation failed on session setup.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Tue, 13 Jul 2021 06:38:30 +0000 (15:38 +0900)]
ksmbd: fix an error message in ksmbd_conn_trasnport_init
Fix an error message in ksmbd_conn_transport_init().
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Tue, 13 Jul 2021 07:09:34 +0000 (16:09 +0900)]
ksmbd: set RDMA capability for FSCTL_QUERY_NETWORK_INTERFACE_INFO
set RDMA capability for
FSCTL_QUERY_NETWORK_INTERFACE_INFO.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Fri, 9 Jul 2021 08:06:34 +0000 (17:06 +0900)]
ksmbd: handle error cases first in smb2_create_sd_buffers
For code cleanup, handle error cases first in
smb2_create_sd_buffers().
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Fri, 9 Jul 2021 08:06:33 +0000 (17:06 +0900)]
ksmbd: make smb2_find_context_vals return NULL if not found
instead of -ENOENT, make smb2_find_context_vals
return NULL if the given context cannot be found.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Sat, 10 Jul 2021 00:34:20 +0000 (09:34 +0900)]
ksmbd: uninterruptible wait for a file being unlocked
the wait can be canceled by SMB2_CANCEL, SMB2_CLOSE,
SMB2_LOGOFF, disconnection or shutdown, we don't have
to use wait_event_interruptible.
And this remove the warning from Coverity:
CID 1502834 (#1 of 1): Unused value (UNUSED_VALUE)
returned_value: Assigning value from ksmbd_vfs_posix_lock_wait(flock)
to err here, but that stored value is overwritten before it can be used.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Sat, 10 Jul 2021 07:22:41 +0000 (16:22 +0900)]
ksmbd: free ksmbd_lock when file is closed
Append ksmbd_lock into the connection's
lock list and the ksmbd_file's lock list.
And when a file is closed, detach ksmbd_lock
from these lists and free it.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Sat, 10 Jul 2021 00:31:08 +0000 (09:31 +0900)]
ksmbd: fix the running request count decrement
decrement the count of running requests after
sending the last response for multi-response
requests.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Dan Carpenter [Wed, 7 Jul 2021 10:15:40 +0000 (13:15 +0300)]
ksmbd: delete some stray tabs
These lines are intended one tab too far.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
ksmbd: change data type of volatile/persistent id to u64
This patch change data type of volatile/persistent id to u64 to make
issue from idr_find and idr_remove(). !HAS_FILE_ID check will protect
integer overflow issue from idr_find and idr_remove().
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
If st->status is not SMB_DIRECT_CS_CONNECTED, It will jump done label
and accessing the uninitialized send_ctxi by smb_direct_flush_send_list
will cause kernel oops. This patch just return -ENOTCONN to avoid it.
Reported-by: Coverity Scan <scan-admin@coverity.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Colin Ian King [Tue, 6 Jul 2021 12:05:01 +0000 (13:05 +0100)]
ksmbd: Fix read on the uninitialized pointer sess
There is a error handling case that passes control to label out_err
without pointer sess being assigned a value. The unassigned pointer
may be any garbage value and so the test of rc < 0 && sess maybe
true leading to sess being passed to the call to ksmbd_session_destroy.
Fix this by setting sess to NULL in this corner case.
Addresses-Coverity: ("Uninitialized pointer read") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Sat, 3 Jul 2021 03:10:36 +0000 (12:10 +0900)]
ksmbd: call mnt_user_ns once in a function
Avoid calling mnt_user_ns() many time in
a function.
Cc: Christoph Hellwig <hch@infradead.org> Cc: Christian Brauner <christian@brauner.io> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
"ksmbd: remove macros in transport_ipc.c" commit change msg to req in
ksmbd_rpc_ioctl/rap(). This will cause kernel oops when running smbclient
-L test.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Wed, 30 Jun 2021 09:25:53 +0000 (18:25 +0900)]
ksmbd: add user namespace support
For user namespace support, call vfs functions
with struct user_namespace got from struct path.
This patch have been tested mannually as below.
Create an id-mapped mount using the mount-idmapped utility
(https://github.com/brauner/mount-idmapped).
$ mount-idmapped --map-mount b:1003:1002:1 /home/foo <EXPORT DIR>/foo
(the user, "foo" is 1003, and the user "bar" is 1002).
And mount the export directory using cifs with the user, "bar".
succeed to create/delete/stat/read/write files and directory in
the <EXPORT DIR>/foo. But fail with a bind mount for /home/foo.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Wed, 30 Jun 2021 09:25:52 +0000 (18:25 +0900)]
ksmbd: replace struct dentry with struct path in some function's arguments
For user namespace support, we need to pass
struct user_namespace with struct dentry
to some functions. For reducing the number
of arguments, replace the struct dentry with
struct path in these functions.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Namjae Jeon [Tue, 29 Jun 2021 05:52:00 +0000 (14:52 +0900)]
ksmbd: reorder and document on-disk and netlink structures in headers
Reorder and document on-disk and netlink structures in headers.
This is a userspace ABI to communicate data between ksmbd and user IPC
daemon using netlink. This is added to track and cache user account DB
and share configuration info from userspace.
- KSMBD_EVENT_HEARTBEAT_REQUEST(ksmbd_heartbeat)
This event is to check whether user IPC daemon is alive. If user IPC
daemon is dead, ksmbd keep existing connection till disconnecting and
new connection will be denied.
- KSMBD_EVENT_STARTING_UP(ksmbd_startup_request)
This event is to receive the information that initializes the ksmbd
server from the user IPC daemon and to start the server. The global
section parameters are given from smb.conf as initialization
information.
- KSMBD_EVENT_SHUTTING_DOWN(ksmbd_shutdown_request)
This event is to shutdown ksmbd server.
- KSMBD_EVENT_LOGIN_REQUEST/RESPONSE(ksmbd_login_request/response)
This event is to get user account info to user IPC daemon.
- KSMBD_EVENT_SHARE_CONFIG_REQUEST/RESPONSE
(ksmbd_share_config_request/response)
This event is to get net share configuration info.
- KSMBD_EVENT_TREE_CONNECT_REQUEST/RESPONSE
(ksmbd_tree_connect_request/response)
This event is to get session and tree connect info.
- KSMBD_EVENT_TREE_DISCONNECT_REQUEST(ksmbd_tree_disconnect_request)
This event is to send tree disconnect info to user IPC daemon.
- KSMBD_EVENT_LOGOUT_REQUEST(ksmbd_logout_request)
This event is to send logout request to user IPC daemon.
- KSMBD_EVENT_RPC_REQUEST/RESPONSE(ksmbd_rpc_command)
This event is to make DCE/RPC request like srvsvc, wkssvc, lsarpc,
samr to be processed in userspace.
- KSMBD_EVENT_SPNEGO_AUTHEN_REQUEST/RESPONSE
(ksmbd_spnego_authen_request/response)
This event is to make kerberos authentication to be processed in
userspace.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Namjae Jeon [Mon, 28 Jun 2021 06:26:37 +0000 (15:26 +0900)]
ksmbd: allow PROTECTED_DACL_SECINFO and UNPROTECTED_DACL_SECINFO addition information in smb2 set info security
"cifsd: Fix regression in smb2_get_info" patch cause that dacl doesn't
work. windows send smb2 set info security with PROTECTED_DACL_SECINFO to
control dacl. But previous patch doesn't allow it.
This patch add PROTECTED_DACL_SECINFO and UNPROTECTED_DACL_SECINFO
addtional information flags in check.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Fri, 25 Jun 2021 02:53:26 +0000 (11:53 +0900)]
ksmbd: remove and replace macros with inline functions in smb_common.h
Remove and replace macros with inline functions
in smb_common.h
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Thu, 24 Jun 2021 22:02:10 +0000 (07:02 +0900)]
ksmbd: remove getting worker state macros
Remove getting worker state macros
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Thu, 24 Jun 2021 22:02:09 +0000 (07:02 +0900)]
ksmbd: replace PAYLOAD_HEAD with inline function
Replace PAYLOAD_HEAD with inline function.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Thu, 24 Jun 2021 22:02:08 +0000 (07:02 +0900)]
ksmbd: replace KSMBD_ALIGN with kernel ALIGN macro
Replace KSMBD_ALIGN with kernel ALIGN macro
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Thu, 24 Jun 2021 22:02:07 +0000 (07:02 +0900)]
ksmbd: replace BUFFER_NR_PAGES with inline function
Replace BUFFER_NR_PAGES with inline function
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Thu, 24 Jun 2021 22:02:06 +0000 (07:02 +0900)]
ksmbd: remove macros in transport_ipc.c
Remove macros in transport_ipc.c
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Wed, 23 Jun 2021 04:48:24 +0000 (13:48 +0900)]
ksmbd: set MAY_* flags together with open flags
set MAY_* flags together with open flags and
remove ksmbd_vfs_inode_permission().
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Hyunchul Lee [Wed, 23 Jun 2021 02:07:43 +0000 (11:07 +0900)]
ksmbd: factor out a ksmbd_vfs_lock_parent helper
Factor out a self-contained helper to
get stable parent dentry.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
projects / kernel.git / log