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2021-05-18cifsd: Do not use 0 or 0xFFFFFFFF for TreeIDMarios Makassikis1-3/+1
Returning TreeID=0 is valid behaviour according to [MS-SMB2] 2.2.1.2: TreeId (4 bytes): Uniquely identifies the tree connect for the command. This MUST be 0 for the SMB2 TREE_CONNECT Request. The TreeId can be any unsigned 32-bit integer that is received from a previous SMB2 TREE_CONNECT Response. TreeId SHOULD be set to 0 for the following commands: [...] However, some client implementations reject it as invalid. Windows10 assigns ids starting from 1, and samba4 returns a random uint32_t which suggests there may be other clients that consider it is invalid behaviour. 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>
2021-05-14cifsd: fix xfstests generic/504 test failureNamjae Jeon1-14/+11
If lock length in smb2 lock request from client is over flock max length size, lock length is changed to flock max length and don't return error response. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-12cifsd: fix boolreturn.cocci warningskernel test robot1-1/+1
fs/cifsd/smb2pdu.c:8098:8-9: WARNING: return of 0/1 in function 'smb2_is_sign_req' with return type bool Return statements in functions returning bool should use true/false instead of 1/0. Generated by: scripts/coccinelle/misc/boolreturn.cocci Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: kernel test robot <lkp@intel.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-11cifsd: fix build break from asn1Namjae Jeon1-0/+3
build break from asn1 happened on some environment. CHECK /home/smfrench/smb3-kernel/fs/cifsd/smb2misc.c CC [M] /home/smfrench/smb3-kernel/fs/cifsd/asn1.o /home/smfrench/smb3-kernel/fs/cifsd/asn1.c:21:10: fatal error: spnego_negtokeninit.asn1.h: No such file or directory 21 | #include "spnego_negtokeninit.asn1.h" | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ compilation terminated. make[1]: *** [scripts/Makefile.build:271: /home/smfrench/smb3-kernel/fs/cifsd/asn1.o] Error 1 make: *** [Makefile:1857: /home/smfrench/smb3-kernel/fs/cifsd] Error 2 make: Leaving directory '/usr/src/linux-headers-5.12.0-051200rc8-generic' This patch fix that asn1 compiler build *.asn1 file before compiling asn.c Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-11cifsd: fix WARNING: Too many leading tabsNamjae Jeon1-22/+19
WARNING: Too many leading tabs - consider code refactoring 3066: FILE: fs/cifsd/smb2pdu.c:2733: + if (fattr.cf_dacls) Fix a warning from checkpatch.pl. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-11cifsd: fix WARNING: Possible unnecessary 'out of memory' messageNamjae Jeon1-3/+1
WARNING: Possible unnecessary 'out of memory' message 902: FILE: fs/cifsd/smb2pdu.c:569: + if (!work->response_buf) { + ksmbd_err("Failed to allocate %zu bytes buffer\n", sz); Fix a warning from checkpatch.pl. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-11cifsd: decoding gss token using lib/asn1_decoder.cHyunchul Lee6-485/+199
Decode gss token of SMB2_SESSSION_SETUP using lib/asn1_decoder.c 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>
2021-05-10cifsd: fix invalid memory access in smb2_write()Namjae Jeon1-1/+1
Add missing fp initialzation to prevent invalid memory access in smb2_write(). 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>
2021-05-10cifsd: add support for AES256 encryptionNamjae Jeon6-34/+68
Now that 256 bit encryption can be negotiated, update names of the nonces to match the updated official protocol documentation (e.g. AES_GCM_NONCE instead of AES_128GCM_NONCE) since they apply to both 128 bit and 256 bit encryption. update smb encryption code to set 32 byte key length and to set gcm256/ccm256 when requested on mount. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: Fix potential null-ptr-deref in destroy_previous_session()Marios Makassikis1-1/+2
The user field in the session structure is allocated when the client is authenticated. If the client explicitly logs off, the user field is freed, but the session is kept around in case the user reconnects. If the TCP connection hasn't been closed and the client sends a session setup with a PreviousSessionId set, destroy_previous_session() will be called to check if the session needs to be cleaned up. 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>
2021-05-10cifsd: Update out_buf_len in smb2_populate_readdir_entry()Marios Makassikis1-0/+1
When processing a SMB2 QUERY_DIRECTORY request, smb2_populate_readdir_entry() is called first to fill the dot/dotdot entries. This moves the d_info->wptr pointer but out_buf_len remains unchanged. As a result, reserve_populate_dentry() may end up writing past the end of the buffer since the bounds checking is done on invalid values. 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>
2021-05-10cifsd: Handle ksmbd_session_rpc_open() failure in create_smb2_pipe()Marios Makassikis1-1/+18
Currently, a SMB2 client does not receive an error message if ksmbd_session_rpc_open() fails when opening a pipe. Fix this by responding with STATUS_NO_MEMORY or STATUS_INVALID_PARAMETER depending on the error that occurred. 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>
2021-05-10cifsd: Call smb2_set_err_rsp() in smb2_read/smb2_write error pathMarios Makassikis1-5/+5
Call smb2_set_err_rsp() in smb2_read/smb2_write error path. 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>
2021-05-10cifsd: add ksmbd/nfsd interoperability to feature tableNamjae Jeon1-10/+22
Add ksmbd/nfsd interoperability to feature table and sync with a table in patch cover letter. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: Fix regression in smb2_get_infoSebastian Gottschall1-0/+18
a Windows 10 client isn't able to store files from ksmbd servers due unknown local permission problems (code 0x8007003A) if smb3 encryption is enabled. Windows 10 is requesting for ATTRIBUTE_SECINFO (mask 0x20) which is not yet handled by ksmbd, this leads to a invalid response. For now we just reintroduce the old check to avoid processing of unhandled flags until ATTRIBUTE_SECINFO is properly handled. Signed-off-by: Sebastian Gottschall <s.gottschall@dd-wrt.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: Remove is_attributes_write_allowed() wrapperMarios Makassikis1-6/+1
Inline it in the only place it is used and remove it. 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>
2021-05-10cifsd: Update access check in set_file_allocation_info/set_end_of_file_infoMarios Makassikis1-2/+2
[MS-SMB2] 3.3.5.21.1 If the object store supports security and FileInfoClass is FileAllocationInformation, FileEndOfFileInformation, or FileValidDataLengthInformation, and Open.GrantedAccess does not include FILE_WRITE_DATA, the server MUST fail the request with STATUS_ACCESS_DENIED. 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>
2021-05-10cifsd: remove the dead code of unimplemented durable handleNamjae Jeon6-358/+2
Remove the dead code of unimplemented durable handle. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: use d_inode()Namjae Jeon4-12/+12
Use d_inode(). Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: Fix potential null-ptr-deref in smb2_open()Marios Makassikis1-2/+5
Fix potential null-ptr-deref in smb2_open(). 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>
2021-05-10cifsd: move nt time functions to misc.cNamjae Jeon6-65/+54
Move nt time functions in netmisc.c to misc.c to remove netmisc.c file. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: remove unused nterr.c fileNamjae Jeon2-681/+0
Remove unused nterr.c file. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: remove unused smberr.hNamjae Jeon3-237/+0
smberr.h is a leftover of SMB1. This patch remove unused smberr.h. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: Remove smb2_put_name()Marios Makassikis1-12/+2
smb2_put_name() is called twice, and both call sites do the IS_ERR() check before. 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>
2021-05-10cifsd: fix reference count decrement of unclaimed file in __ksmbd_lookup_fdHyunchul Lee2-58/+0
__ksmbd_lookup_fd could decrement the reference count of unclaimed ksmbd_file to 0 but not release this ksmbd_file. ksmbd_file cannot be unclaimed except ksmbd_close_inode_fds(), because ksmbd_file is only removed from the m_fp_list list after the reference count of ksmbd_file becomes 0. And if the count is 0, __ksmbd_lookup_fd does not use ksmbd_file found from idr due to atomic_inc_not_zero. 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>
2021-05-10cifsd: re-implement ksmbd_vfs_kern_pathHyunchul Lee1-42/+61
re-implement ksmbd_vfs_kern_path() to change recursion to iteration. 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>
2021-05-10cifsd: get parent dentry from child in ksmbd_vfs_remove_file()Namjae Jeon1-17/+14
To remove the file, We have parsed full pathname to divide parent path and filename. It is a better way to get parent dentry from child dentry that obtained by lookup with given pathname. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: add the check if parent is stable by unexpected renameNamjae Jeon2-30/+80
This patch add the check if parent is stable by unexpected rename. 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>
2021-05-10cifsd: declare ida staticallyNamjae Jeon10-110/+40
Matthew pointed out that embedding struct ida into the struct is better than having a pointer to it. This patch initialise it statically using DEFINE_IDA() or ida_init() and remove ksmbd_ida_alloc/free(). Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: remove unused including <linux/version.h>Tian Tao8-8/+0
Remove including <linux/version.h> that don't need it. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Zhiqi Song <songzhiqi1@huawei.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: Select SG_POOL for SMB_SERVER_SMBDIRECTZhang Xiaoxu1-0/+1
hulk-robot following build error: fs/cifsd/transport_rdma.c: In function 'read_write_done': fs/cifsd/transport_rdma.c:1297:2: error: implicit declaration of function 'sg_free_table_chained' [-Werror=implicit-function-declaration] 1297 | sg_free_table_chained(&msg->sgt, SG_CHUNK_SIZE); The reason is CONFIG_SG_POOL is not enabled in the config, to avoid such failure, select SG_POOL in Kconfig for SMB_SERVER_SMBDIRECT. Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: prevent a integer overflow in wm_alloc()Namjae Jeon1-0/+3
Dan Carpenter pointed out that there there is a possibility of integer overflow. This patch prevent a integer overflow in wm_alloc(). Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10doc: cifsd: change the reference to configuration.txtMauro Carvalho Chehab1-2/+2
added documentation for cifsd. There, it points to a file named: Documentation/configuration.txt This confuses Kernel scripts, as they think that this is a document within the Kernel tree, instead of a file from some other place. Replace it by an hyperlink to the ksmbd-tools tree, in order to avoid false-positives. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: remove wrappers of kvmalloc/kvfreeNamjae Jeon14-97/+55
Do directly call kvmalloc/kvfree(). Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: fix memdup.cocci warningskernel test robot1-4/+2
fs/cifsd/smb2pdu.c:1177:27-34: WARNING opportunity for kmemdup Use kmemdup rather than duplicating its implementation Generated by: scripts/coccinelle/api/memdup.cocci Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: kernel test robot <lkp@intel.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: use kfree to free memory allocated by kmalloc or kzallocMuhammad Usama Anjum7-14/+14
kfree should be used to free memory allocated by kmalloc or kzalloc to avoid any overhead and for maintaining consistency. Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: fix memory leak when loop endsMuhammad Usama Anjum1-4/+4
Memory is being allocated and if veto_list is zero, the loop breaks without cleaning up the allocated memory. In this patch, the length check has been moved before allocation. If loop breaks, the memory isn't allocated in the first place. Thus the memory is being protected from leaking. Reported-by: coverity-bot <keescook+coverity-bot@chromium.org> Addresses-Coverity-ID: 1503590 ("Resource leaks") Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: remove stale prototype and variablesGibeom Kim6-12/+0
Remove unused function prototype and variables. Signed-off-by: Gibeom Kim <gibeomii.kim@samsung.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: use xarray instead of linked list for tree connect listNamjae Jeon4-23/+24
Matthew suggest to change linked list of tree connect list to xarray. It will be tree connect lookup in O(log(n)) time instead of O(n) time. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: remove useless error handling in ksmbd_vfs_readHyunchul Lee1-11/+6
dentry->d_inode never happen to be NULL if we hold the 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>
2021-05-10cifsd: use file_inode() instead of d_inode()Hyunchul Lee1-1/+1
use file_inode() to get layerd filesystems right. 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>
2021-05-10cifsd: handle unhashed dentry in ksmbd_vfs_mkdirHyunchul Lee1-5/+23
vfs_mkdir could return the dentry left unhashed negative on success. 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>
2021-05-10cifsd: remove calling d_path in error pathsHyunchul Lee1-6/+2
calling d_path is excessive in error paths. 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>
2021-05-10cifsd: remove smack inherit leftoversNamjae Jeon2-47/+4
smack inherit was added for internal product beofre. It is no longer used. This patch remove it's left overs. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: fix implicit declaration of function 'locks_alloc_lock'Namjae Jeon1-0/+1
Randy reported build failure: ../fs/cifsd/smb2pdu.c:6655:7: error: implicit declaration of function 'locks_alloc_lock'; did you mean 'locks_copy_lock'? This patch add depend on FILE_LOCKING. Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: fix implicit declaration of function 'groups_alloc'Namjae Jeon1-0/+1
kernel test robot reported: fs/cifsd/smb_common.c: In function 'ksmbd_override_fsids': >> fs/cifsd/smb_common.c:613:7: error: implicit declaration of function >> 'groups_alloc'; did you mean 'cgroup_sk_alloc'? >> [-Werror=implicit-function-declaration] 613 | gi = groups_alloc(0); | ^~~~~~~~~~~~ | cgroup_sk_alloc fs/cifsd/smb_common.c:613:5: warning: assignment to 'struct group_info *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 613 | gi = groups_alloc(0); | ^ >> fs/cifsd/smb_common.c:618:2: error: implicit declaration of function >> 'set_groups'; did you mean 'get_cgroup_ns'? >> [-Werror=implicit-function-declaration] 618 | set_groups(cred, gi); | ^~~~~~~~~~ | get_cgroup_ns cc1: some warnings being treated as errors This patch add depends on MULTIUSER. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: fix wrong prototype in commentNamjae Jeon1-1/+1
kernel test robot reported: >> fs/cifsd/oplock.c:1454: warning: expecting prototype for create_durable_rsp__buf(). Prototype was for create_durable_rsp_buf() instead This patch fix wrong prototype in comment. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: merge time_wrappers.h into smb_common.hNamjae Jeon5-37/+22
This patch merge time_wrappers.h into smb_common.h. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: clean-up codes using chechpatch.pl --strictNamjae Jeon31-1404/+1011
Dan Carpenter suggested to run chechpatch.pl --strict on ksmbd to fix check warnings. This patch does not fix all warnings but only things that I can understand. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-10cifsd: fix error return code in ksmbd_vfs_remove_file()Namjae Jeon1-1/+1
Change -ENOENT error to -EINVAL to response STATUS_INVALID_PARAMETER. Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Steve French <stfrench@microsoft.com>
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