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Message-Id: <20211104045718.30388-1-guozhengkui@vivo.com>
Date: Thu, 4 Nov 2021 12:57:18 +0800
From: Guo Zhengkui <guozhengkui@...o.com>
To: Namjae Jeon <linkinjeon@...nel.org>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
Steve French <sfrench@...ba.org>,
Hyunchul Lee <hyc.lee@...il.com>, linux-cifs@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: kernel@...o.com, Guo Zhengkui <guozhengkui@...o.com>
Subject: [PATCH] ksmbd: fix flexible_array.cocci warnings
Fix following coccicheck warnings:
./fs/ksmbd/xxxxxx: WARNING use flexible-array member instead.
There is a regular need in the kernel to provide a way to declare
having a dynamically sized set of trailing elements in a structure.
Kernel code should always use “flexible array members” for these
cases. The older style of one-element or zero-length arrays should
no longer be used.
Signed-off-by: Guo Zhengkui <guozhengkui@...o.com>
---
fs/ksmbd/ksmbd_netlink.h | 2 +-
fs/ksmbd/ntlmssp.h | 6 ++--
fs/ksmbd/smb2pdu.h | 62 +++++++++++++++++++--------------------
fs/ksmbd/smb_common.h | 20 ++++++-------
fs/ksmbd/transport_rdma.c | 2 +-
fs/ksmbd/xattr.h | 2 +-
6 files changed, 47 insertions(+), 47 deletions(-)
diff --git a/fs/ksmbd/ksmbd_netlink.h b/fs/ksmbd/ksmbd_netlink.h
index c6718a05d347..71d018c2e016 100644
--- a/fs/ksmbd/ksmbd_netlink.h
+++ b/fs/ksmbd/ksmbd_netlink.h
@@ -231,7 +231,7 @@ struct ksmbd_rpc_command {
struct ksmbd_spnego_authen_request {
__u32 handle;
__u16 spnego_blob_len; /* the length of spnego_blob */
- __u8 spnego_blob[0]; /*
+ __u8 spnego_blob[]; /*
* the GSS token from SecurityBuffer of
* SMB2 SESSION SETUP request
*/
diff --git a/fs/ksmbd/ntlmssp.h b/fs/ksmbd/ntlmssp.h
index adaf4c0cbe8f..f13153c18b4e 100644
--- a/fs/ksmbd/ntlmssp.h
+++ b/fs/ksmbd/ntlmssp.h
@@ -95,7 +95,7 @@ struct security_buffer {
struct target_info {
__le16 Type;
__le16 Length;
- __u8 Content[0];
+ __u8 Content[];
} __packed;
struct negotiate_message {
@@ -108,7 +108,7 @@ struct negotiate_message {
* struct security_buffer for version info not present since we
* do not set the version is present flag
*/
- char DomainString[0];
+ char DomainString[];
/* followed by WorkstationString */
} __packed;
@@ -140,7 +140,7 @@ struct authenticate_message {
* struct security_buffer for version info not present since we
* do not set the version is present flag
*/
- char UserString[0];
+ char UserString[];
} __packed;
struct ntlmv2_resp {
diff --git a/fs/ksmbd/smb2pdu.h b/fs/ksmbd/smb2pdu.h
index ff5a2f01d34a..b415a4b914a4 100644
--- a/fs/ksmbd/smb2pdu.h
+++ b/fs/ksmbd/smb2pdu.h
@@ -206,7 +206,7 @@ struct smb2_err_rsp {
__u8 ErrorContextCount;
__u8 Reserved;
__le32 ByteCount; /* even if zero, at least one byte follows */
- __u8 ErrorData[1]; /* variable length */
+ __u8 ErrorData[]; /* variable length */
} __packed;
struct smb2_negotiate_req {
@@ -221,7 +221,7 @@ struct smb2_negotiate_req {
__le32 NegotiateContextOffset; /* SMB3.1.1 only. MBZ earlier */
__le16 NegotiateContextCount; /* SMB3.1.1 only. MBZ earlier */
__le16 Reserved2;
- __le16 Dialects[1]; /* One dialect (vers=) at a time for now */
+ __le16 Dialects[]; /* One dialect (vers=) at a time for now */
} __packed;
/* SecurityMode flags */
@@ -364,7 +364,7 @@ struct smb2_negotiate_rsp {
__le16 SecurityBufferOffset;
__le16 SecurityBufferLength;
__le32 NegotiateContextOffset; /* Pre:SMB3.1.1 was reserved/ignored */
- __u8 Buffer[1]; /* variable length GSS security buffer */
+ __u8 Buffer[]; /* variable length GSS security buffer */
} __packed;
/* Flags */
@@ -389,7 +389,7 @@ struct smb2_sess_setup_req {
__le16 SecurityBufferOffset;
__le16 SecurityBufferLength;
__le64 PreviousSessionId;
- __u8 Buffer[1]; /* variable length GSS security buffer */
+ __u8 Buffer[]; /* variable length GSS security buffer */
} __packed;
/* Flags/Reserved for SMB3.1.1 */
@@ -405,7 +405,7 @@ struct smb2_sess_setup_rsp {
__le16 SessionFlags;
__le16 SecurityBufferOffset;
__le16 SecurityBufferLength;
- __u8 Buffer[1]; /* variable length GSS security buffer */
+ __u8 Buffer[]; /* variable length GSS security buffer */
} __packed;
struct smb2_logoff_req {
@@ -426,7 +426,7 @@ struct smb2_tree_connect_req {
__le16 Reserved; /* Flags in SMB3.1.1 */
__le16 PathOffset;
__le16 PathLength;
- __u8 Buffer[1]; /* variable length */
+ __u8 Buffer[]; /* variable length */
} __packed;
struct smb2_tree_connect_rsp {
@@ -594,7 +594,7 @@ struct smb2_create_req {
__le16 NameLength;
__le32 CreateContextsOffset;
__le32 CreateContextsLength;
- __u8 Buffer[0];
+ __u8 Buffer[];
} __packed;
struct smb2_create_rsp {
@@ -615,7 +615,7 @@ struct smb2_create_rsp {
__le64 VolatileFileId;
__le32 CreateContextsOffset;
__le32 CreateContextsLength;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct create_context {
@@ -625,7 +625,7 @@ struct create_context {
__le16 Reserved;
__le16 DataOffset;
__le32 DataLength;
- __u8 Buffer[0];
+ __u8 Buffer[];
} __packed;
struct create_durable_req_v2 {
@@ -840,7 +840,7 @@ struct smb2_read_req {
__le32 RemainingBytes;
__le16 ReadChannelInfoOffset; /* Reserved MBZ */
__le16 ReadChannelInfoLength; /* Reserved MBZ */
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct smb2_read_rsp {
@@ -851,7 +851,7 @@ struct smb2_read_rsp {
__le32 DataLength;
__le32 DataRemaining;
__u32 Reserved2;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
/* For write request Flags field below the following flag is defined: */
@@ -870,7 +870,7 @@ struct smb2_write_req {
__le16 WriteChannelInfoOffset; /* Reserved MBZ */
__le16 WriteChannelInfoLength; /* Reserved MBZ */
__le32 Flags;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct smb2_write_rsp {
@@ -881,7 +881,7 @@ struct smb2_write_rsp {
__le32 DataLength;
__le32 DataRemaining;
__u32 Reserved2;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
#define SMB2_0_IOCTL_IS_FSCTL 0x00000001
@@ -909,7 +909,7 @@ struct smb2_ioctl_req {
__le32 MaxOutputResponse;
__le32 Flags;
__le32 Reserved2;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct smb2_ioctl_rsp {
@@ -925,7 +925,7 @@ struct smb2_ioctl_rsp {
__le32 OutputCount;
__le32 Flags;
__le32 Reserved2;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct validate_negotiate_info_req {
@@ -933,7 +933,7 @@ struct validate_negotiate_info_req {
__u8 Guid[SMB2_CLIENT_GUID_SIZE];
__le16 SecurityMode;
__le16 DialectCount;
- __le16 Dialects[1]; /* dialect (someday maybe list) client asked for */
+ __le16 Dialects[]; /* dialect (someday maybe list) client asked for */
} __packed;
struct validate_negotiate_info_rsp {
@@ -996,7 +996,7 @@ struct copychunk_ioctl_req {
__le64 ResumeKey[3];
__le32 ChunkCount;
__le32 Reserved;
- __u8 Chunks[1]; /* array of srv_copychunk */
+ __u8 Chunks[]; /* array of srv_copychunk */
} __packed;
struct srv_copychunk {
@@ -1067,7 +1067,7 @@ struct smb2_notify_rsp {
__le16 StructureSize; /* Must be 9 */
__le16 OutputBufferOffset;
__le32 OutputBufferLength;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
/* SMB2 Notify Action Flags */
@@ -1102,7 +1102,7 @@ struct smb2_lock_req {
__le64 PersistentFileId;
__le64 VolatileFileId;
/* Followed by at least one */
- struct smb2_lock_element locks[1];
+ struct smb2_lock_element locks[];
} __packed;
struct smb2_lock_rsp {
@@ -1140,7 +1140,7 @@ struct smb2_query_directory_req {
__le16 FileNameOffset;
__le16 FileNameLength;
__le32 OutputBufferLength;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct smb2_query_directory_rsp {
@@ -1148,7 +1148,7 @@ struct smb2_query_directory_rsp {
__le16 StructureSize; /* Must be 9 */
__le16 OutputBufferOffset;
__le32 OutputBufferLength;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
/* Possible InfoType values */
@@ -1184,7 +1184,7 @@ struct smb2_query_info_req {
__le32 Flags;
__le64 PersistentFileId;
__le64 VolatileFileId;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct smb2_query_info_rsp {
@@ -1192,7 +1192,7 @@ struct smb2_query_info_rsp {
__le16 StructureSize; /* Must be 9 */
__le16 OutputBufferOffset;
__le32 OutputBufferLength;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct smb2_set_info_req {
@@ -1206,7 +1206,7 @@ struct smb2_set_info_req {
__le32 AdditionalInformation;
__le64 PersistentFileId;
__le64 VolatileFileId;
- __u8 Buffer[1];
+ __u8 Buffer[];
} __packed;
struct smb2_set_info_rsp {
@@ -1426,7 +1426,7 @@ struct smb2_file_rename_info { /* encoding of request for level 10 */
__u8 Reserved[7];
__u64 RootDirectory; /* MBZ for network operations (why says spec?) */
__le32 FileNameLength;
- char FileName[0]; /* New name to be assigned */
+ char FileName[]; /* New name to be assigned */
} __packed; /* level 10 Set */
struct smb2_file_link_info { /* encoding of request for level 11 */
@@ -1435,7 +1435,7 @@ struct smb2_file_link_info { /* encoding of request for level 11 */
__u8 Reserved[7];
__u64 RootDirectory; /* MBZ for network operations (why says spec?) */
__le32 FileNameLength;
- char FileName[0]; /* Name to be assigned to new link */
+ char FileName[]; /* Name to be assigned to new link */
} __packed; /* level 11 Set */
/*
@@ -1463,7 +1463,7 @@ struct smb2_file_all_info { /* data block encoding of response to level 18 */
__le32 Mode;
__le32 AlignmentRequirement;
__le32 FileNameLength;
- char FileName[1];
+ char FileName[];
} __packed; /* level 18 Query */
struct smb2_file_basic_info { /* data block encoding of response to level 18 */
@@ -1477,7 +1477,7 @@ struct smb2_file_basic_info { /* data block encoding of response to level 18 */
struct smb2_file_alt_name_info {
__le32 FileNameLength;
- char FileName[0];
+ char FileName[];
} __packed;
struct smb2_file_stream_info {
@@ -1485,7 +1485,7 @@ struct smb2_file_stream_info {
__le32 StreamNameLength;
__le64 StreamSize;
__le64 StreamAllocationSize;
- char StreamName[0];
+ char StreamName[];
} __packed;
struct smb2_file_eof_info { /* encoding of request for level 10 */
@@ -1566,7 +1566,7 @@ struct smb2_ea_info {
__u8 Flags;
__u8 EaNameLength;
__le16 EaValueLength;
- char name[1];
+ char name[];
/* optionally followed by value */
} __packed; /* level 15 Query */
@@ -1629,7 +1629,7 @@ struct smb2_posix_info {
__le32 Mode;
u8 SidBuffer[40];
__le32 name_len;
- u8 name[1];
+ u8 name[];
/*
* var sized owner SID
* var sized group SID
diff --git a/fs/ksmbd/smb_common.h b/fs/ksmbd/smb_common.h
index 6e79e7577f6b..619fad7dd887 100644
--- a/fs/ksmbd/smb_common.h
+++ b/fs/ksmbd/smb_common.h
@@ -240,7 +240,7 @@ struct smb_hdr {
struct smb_negotiate_req {
struct smb_hdr hdr; /* wct = 0 */
__le16 ByteCount;
- unsigned char DialectsArray[1];
+ unsigned char DialectsArray[];
} __packed;
struct smb_negotiate_rsp {
@@ -265,7 +265,7 @@ struct smb_negotiate_rsp {
/* then security blob if cap_extended_security negotiated */
struct {
unsigned char GUID[SMB1_CLIENT_GUID_SIZE];
- unsigned char SecurityBlob[1];
+ unsigned char SecurityBlob[];
} __packed extended_response;
} __packed u;
} __packed;
@@ -274,7 +274,7 @@ struct filesystem_attribute_info {
__le32 Attributes;
__le32 MaxPathNameComponentLength;
__le32 FileSystemNameLen;
- __le16 FileSystemName[1]; /* do not have to save this - get subset? */
+ __le16 FileSystemName[]; /* do not have to save this - get subset? */
} __packed;
struct filesystem_device_info {
@@ -287,7 +287,7 @@ struct filesystem_vol_info {
__le32 SerialNumber;
__le32 VolumeLabelSize;
__le16 Reserved;
- __le16 VolumeLabel[1];
+ __le16 VolumeLabel[];
} __packed;
struct filesystem_info {
@@ -324,14 +324,14 @@ struct file_directory_info {
__le64 AllocationSize;
__le32 ExtFileAttributes;
__le32 FileNameLength;
- char FileName[1];
+ char FileName[];
} __packed; /* level 0x101 FF resp data */
struct file_names_info {
__le32 NextEntryOffset;
__u32 FileIndex;
__le32 FileNameLength;
- char FileName[1];
+ char FileName[];
} __packed; /* level 0xc FF resp data */
struct file_full_directory_info {
@@ -346,7 +346,7 @@ struct file_full_directory_info {
__le32 ExtFileAttributes;
__le32 FileNameLength;
__le32 EaSize;
- char FileName[1];
+ char FileName[];
} __packed; /* level 0x102 FF resp */
struct file_both_directory_info {
@@ -364,7 +364,7 @@ struct file_both_directory_info {
__u8 ShortNameLength;
__u8 Reserved;
__u8 ShortName[24];
- char FileName[1];
+ char FileName[];
} __packed; /* level 0x104 FFrsp data */
struct file_id_both_directory_info {
@@ -384,7 +384,7 @@ struct file_id_both_directory_info {
__u8 ShortName[24];
__le16 Reserved2;
__le64 UniqueId;
- char FileName[1];
+ char FileName[];
} __packed;
struct file_id_full_dir_info {
@@ -401,7 +401,7 @@ struct file_id_full_dir_info {
__le32 EaSize; /* EA size */
__le32 Reserved;
__le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/
- char FileName[1];
+ char FileName[];
} __packed; /* level 0x105 FF rsp data */
struct smb_version_values {
diff --git a/fs/ksmbd/transport_rdma.c b/fs/ksmbd/transport_rdma.c
index 6330dfc302ff..ca62060acd2b 100644
--- a/fs/ksmbd/transport_rdma.c
+++ b/fs/ksmbd/transport_rdma.c
@@ -198,7 +198,7 @@ struct smb_direct_rdma_rw_msg {
struct completion *completion;
struct rdma_rw_ctx rw_ctx;
struct sg_table sgt;
- struct scatterlist sg_list[0];
+ struct scatterlist sg_list[];
};
static inline int get_buf_page_count(void *buf, int size)
diff --git a/fs/ksmbd/xattr.h b/fs/ksmbd/xattr.h
index 8857c01093d9..16499ca5c82d 100644
--- a/fs/ksmbd/xattr.h
+++ b/fs/ksmbd/xattr.h
@@ -76,7 +76,7 @@ struct xattr_acl_entry {
struct xattr_smb_acl {
int count;
int next;
- struct xattr_acl_entry entries[0];
+ struct xattr_acl_entry entries[];
};
/* 64bytes hash in xattr_ntacl is computed with sha256 */
--
2.20.1
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