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CIFS: Clarify SMB1 code for POSIX Create
Coverity also complains about the way we calculate the offset (starting from the address of a 4 byte array within the header structure rather than from the beginning of the struct plus 4 bytes) for SMB1 CIFSPOSIXCreate. This changeset doesn't change the address but makes it slightly clearer. Addresses-Coverity: 711518 ("Out of bounds write") Signed-off-by: Steve French <stfrench@microsoft.com>
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@ -1081,7 +1081,8 @@ PsxCreat:
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param_offset = offsetof(struct smb_com_transaction2_spi_req,
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InformationLevel) - 4;
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offset = param_offset + params;
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pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset);
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/* SMB offsets are from the beginning of SMB which is 4 bytes in, after RFC1001 field */
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pdata = (OPEN_PSX_REQ *)((char *)(pSMB) + offset + 4);
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pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
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pdata->Permissions = cpu_to_le64(mode);
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pdata->PosixOpenFlags = cpu_to_le32(posix_flags);
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