Before assigning wbuf to stream_buf, memory allocate in
ksmbd_vfs_getcasexattr() need be freed.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

checkpatch.pl complains as the following:

Alignment should match open parenthesis.
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>

checkpatch.pl complains as the following:

CHECK: Macro argument 'fp' may be better as '(fp)' to avoid
precedence issues.
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>

Fix a defect reported by Coverity Scan.

*** CID 1504970:  Control flow issues  (NO_EFFECT)
/fs/cifsd/auth.c: 622 in ksmbd_build_ntlmssp_challenge_blob()
616             name = kmalloc(2 + UNICODE_LEN(len), GFP_KERNEL);
617             if (!name)
618                     return -ENOMEM;
619
620             conv_len = smb_strtoUTF16((__le16 *)name,
ksmbd_netbios_name(), len,
621                                       sess->conn->local_nls);
>>>     CID 1504970:  Control flow issues  (NO_EFFECT)
>>>     This less-than-zero comparison of an unsigned value is never true.
622             if (conv_len < 0 || conv_len > len) {
623                     kfree(name);
624                     return -EINVAL;
625             }
626
627             uni_len = UNICODE_LEN(conv_len);
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>

Some vfs help functions lookup a file with
LOOKUP_FOLLOW regardless of the "follow symlinks"
option.
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>

Fix a warning from checkpatch.pl --strict:

 CHECK: Prefer kernel type 'u16' over 'uint16_t'
 #112: FILE: server.c:112:
 +       uint16_t command;
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Fix warnings from checkpatch.pl --strict :

 CHECK: Unnecessary parentheses around 'brk_op->o_lease->new_state ==
 SMB2_LEASE_NONE_LE'
 #1511: FILE: oplock.c:1511:
 +               if (brk_op->is_lease &&
 +                   (brk_op->o_lease->new_state == SMB2_LEASE_NONE_LE)
 &&
 +                   atomic_read(&brk_op->breaking_cnt))
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Fix warnings "Alignment should match open parenthesis" from
checkpatch.pl --strict.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Blank lines aren't necessary after an open brace '{'.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

No space is necessary after a cast.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

don't use multiple blank lines.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Fix "CHECK: paces preferred around that '/' from checkpatch.pl --strict.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Fix "CHECK: braces {} should be used on all arms of this statement"
from checkpatch.pl --strict.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Add the check to prevent potential overflow with smb_strtoUTF16() and
UNICODE_LEN().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Alignment match open parenthesis.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Return -ENOMEM about error from ksmbd_crypto_ctx_find_xxx calls.
And remove unneeded return value print in debug message.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Simplify error handling in ksmbd_gen_preauth_integrity_hash().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Call kzalloc() directly instead of wrapper function.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Add default case in switch statment in alloc_shash_desc().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Change success handling to failure handling in ksmbd_crypt_message().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Change error return instead of returning always success return.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Remove unneeded initialization of rc variable in ksmbd_crypt_message().
Reviewed-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 pointed out len can not be negative.
This patch remove unneeded negative check in loop.
Reviewed-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 pointed out that memory can be corrupted when nvec is zero.
This patch add the check to prevent it.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Never return 1 on failure.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Return zero in always success case.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Set error return value for memcmp() difference.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Remove unneeded type casting.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

simplify error handling in ksmbd_auth_ntlm().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Move ret check before the out label.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Just return smbhash() instead of using rc return value.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Move fips_enabled check before the str_to_key().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Add goto fail in neg_token_init_mech_type().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Use memcmp instead of for loop check in oid_eq().
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Add goto fail in asn1_oid_decode() to clean-up exception handling code.
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Fix build error when CONFIG_OID_REGISTRY is not set:

mips-linux-gnu-ld: fs/cifsd/asn1.o: in function `gssapi_this_mech':
asn1.c:(.text+0xaa0): undefined reference to `sprint_oid'
mips-linux-gnu-ld: fs/cifsd/asn1.o: in function `neg_token_init_mech_type':
asn1.c:(.text+0xbec): undefined reference to `sprint_oid'
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Add support for FSCTL_DUPLICATE_EXTENTS_TO_FILE in smb2 ioctl.
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

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>

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>

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>