Signed-off-by: Ronnie Sahlberg <lsahlber@xxxxxxxxxx>
---
fs/cifs/smb2misc.c | 37 +++++++++++++++++++------------------
fs/cifs/smb2pdu.c | 2 +-
fs/cifs/smb2proto.h | 3 ++-
3 files changed, 22 insertions(+), 20 deletions(-)
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index db5607be78f5..4c6d14d14e4f 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -294,15 +294,14 @@ static const bool has_smb2_data_area[NUMBER_OF_SMB2_COMMANDS] = {
* area and the offset to it (from the beginning of the smb are also returned.
*/
char *
-smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr)
+smb2_get_data_area_len(int *off, int *len, struct smb2_sync_hdr *shdr)
{
- struct smb2_sync_hdr *shdr = get_sync_hdr(hdr);
*off = 0;
*len = 0;
/* error responses do not have data area */
if (shdr->Status && shdr->Status != STATUS_MORE_PROCESSING_REQUIRED &&
- (((struct smb2_err_rsp *)hdr)->StructureSize) ==
+ (((struct smb2_err_rsp *)shdr)->StructureSize) ==
SMB2_ERROR_STRUCTURE_SIZE2)
return NULL;
@@ -314,42 +313,44 @@ smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr)
switch (shdr->Command) {
case SMB2_NEGOTIATE:
*off = le16_to_cpu(
- ((struct smb2_negotiate_rsp *)hdr)->SecurityBufferOffset);
+ ((struct smb2_sess_setup_rsp *)shdr)->SecurityBufferOffset);
*len = le16_to_cpu(
- ((struct smb2_negotiate_rsp *)hdr)->SecurityBufferLength);
+ ((struct smb2_sess_setup_rsp *)shdr)->SecurityBufferLength);
break;
case SMB2_SESSION_SETUP:
*off = le16_to_cpu(
- ((struct smb2_sess_setup_rsp *)hdr)->SecurityBufferOffset);
+ ((struct smb2_sess_setup_rsp *)shdr)->SecurityBufferOffset);
*len = le16_to_cpu(
- ((struct smb2_sess_setup_rsp *)hdr)->SecurityBufferLength);
+ ((struct smb2_sess_setup_rsp *)shdr)->SecurityBufferLength);
break;
case SMB2_CREATE:
*off = le32_to_cpu(
- ((struct smb2_create_rsp *)hdr)->CreateContextsOffset);
+ ((struct smb2_create_rsp *)shdr)->CreateContextsOffset);
*len = le32_to_cpu(
- ((struct smb2_create_rsp *)hdr)->CreateContextsLength);
+ ((struct smb2_create_rsp *)shdr)->CreateContextsLength);
break;
case SMB2_QUERY_INFO:
*off = le16_to_cpu(
- ((struct smb2_query_info_rsp *)hdr)->OutputBufferOffset);
+ ((struct smb2_query_info_rsp *)shdr)->OutputBufferOffset);
*len = le32_to_cpu(
- ((struct smb2_query_info_rsp *)hdr)->OutputBufferLength);
+ ((struct smb2_query_info_rsp *)shdr)->OutputBufferLength);
break;
case SMB2_READ:
- *off = ((struct smb2_read_rsp *)hdr)->DataOffset;
- *len = le32_to_cpu(((struct smb2_read_rsp *)hdr)->DataLength);
+ /* TODO: is this a bug ? */
+ *off = ((struct smb2_read_rsp *)shdr)->DataOffset;
+ *len = le32_to_cpu(((struct smb2_read_rsp *)shdr)->DataLength);
break;
case SMB2_QUERY_DIRECTORY:
*off = le16_to_cpu(
- ((struct smb2_query_directory_rsp *)hdr)->OutputBufferOffset);
+ ((struct smb2_query_directory_rsp *)shdr)->OutputBufferOffset);
*len = le32_to_cpu(
- ((struct smb2_query_directory_rsp *)hdr)->OutputBufferLength);
+ ((struct smb2_query_directory_rsp *)shdr)->OutputBufferLength);
break;
case SMB2_IOCTL:
*off = le32_to_cpu(
- ((struct smb2_ioctl_rsp *)hdr)->OutputOffset);
- *len = le32_to_cpu(((struct smb2_ioctl_rsp *)hdr)->OutputCount);
+ ((struct smb2_ioctl_rsp *)shdr)->OutputOffset);
+ *len = le32_to_cpu(
+ ((struct smb2_ioctl_rsp *)shdr)->OutputCount);
break;
case SMB2_CHANGE_NOTIFY:
default:
@@ -410,7 +411,7 @@ smb2_calc_size(void *buf, struct TCP_Server_Info *srvr)
if (has_smb2_data_area[le16_to_cpu(shdr->Command)] == false)
goto calc_size_exit;
- smb2_get_data_area_len(&offset, &data_length, (struct smb2_hdr *)buf);
+ smb2_get_data_area_len(&offset, &data_length, shdr);
cifs_dbg(FYI, "SMB2 data length %d offset %d\n", data_length, offset);
if (data_length > 0) {
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index ef67379078d1..76f618bb74ea 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -709,7 +709,7 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses)
server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES;
security_blob = smb2_get_data_area_len(&blob_offset, &blob_length,
- &rsp->hdr);
+ &rsp->hdr.sync_hdr);
/*
* See MS-SMB2 section 2.2.4: if no blob, client picks default which
* for us will be
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 4b0db6af7fe7..908555b1c6b5 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -37,7 +37,8 @@ extern int map_smb2_to_linux_error(char *buf, bool log_err);
extern int smb2_check_message(char *buf, unsigned int length,
struct TCP_Server_Info *server);
extern unsigned int smb2_calc_size(void *buf, struct TCP_Server_Info *server);
-extern char *smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr);
+extern char *smb2_get_data_area_len(int *off, int *len,
+ struct smb2_sync_hdr *shdr);
extern __le16 *cifs_convert_path_to_utf16(const char *from,
struct cifs_sb_info *cifs_sb);
--
2.13.3
--
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