s3:smbd: add file_fsp_smb2()

[ddiss/samba.git] / source3 / smbd / files.c

diff --git a/source3/smbd/files.c b/source3/smbd/files.c
index fafb10d89964f6db5b4ecb580bf7008b76674a7c..9cf17ce90154a0427d87cf60d6569df46f321e58 100644 (file)
--- a/source3/smbd/files.c
+++ b/source3/smbd/files.c
@@ -551,6 +551,49 @@ files_struct *file_fsp(struct smb_request *req, uint16 fid)
        return fsp;
 }
 
+struct files_struct *file_fsp_smb2(struct smbd_smb2_request *smb2req,
+                                  uint64_t persistent_id,
+                                  uint64_t volatile_id)
+{
+       struct files_struct *fsp;
+
+       if (smb2req->compat_chain_fsp != NULL) {
+               return smb2req->compat_chain_fsp;
+       }
+
+       if (persistent_id != volatile_id) {
+               return NULL;
+       }
+
+       if (volatile_id > UINT16_MAX) {
+               return NULL;
+       }
+
+       fsp = file_fnum(smb2req->sconn, (uint16_t)volatile_id);
+       if (fsp == NULL) {
+               return NULL;
+       }
+
+       if (smb2req->tcon == NULL) {
+               return NULL;
+       }
+
+       if (smb2req->tcon->compat_conn != fsp->conn) {
+               return NULL;
+       }
+
+       if (smb2req->session == NULL) {
+               return NULL;
+       }
+
+       if (smb2req->session->vuid != fsp->vuid) {
+               return NULL;
+       }
+
+       smb2req->compat_chain_fsp = fsp;
+       return fsp;
+}
+
 /****************************************************************************
  Duplicate the file handle part for a DOS or FCB open.
 ****************************************************************************/