Initial import of the CDE 2.1.30 sources from the Open Group.

cde/lib/DtSearch/raima/recread.c

@@ -0,0 +1,92 @@
+/* $XConsortium: recread.c /main/2 1996/05/09 04:15:18 drk $ */
+/*
+ *   COMPONENT_NAME: austext
+ *
+ *   FUNCTIONS: d_recread
+ *
+ *   ORIGINS: 157
+ *
+ *   OBJECT CODE ONLY SOURCE MATERIALS
+ */
+/*-----------------------------------------------------------------------
+   recread.c -- db_VISTA current record read module.
+
+   (C) Copyright 1987 by Raima Corporation.
+-----------------------------------------------------------------------*/
+
+/* ********************** EDIT HISTORY *******************************
+
+ SCR    DATE    INI                   DESCRIPTION
+----- --------- --- -----------------------------------------------------
+  103 27-Jun-88 RSC Improve generation of single user version
+      04-Aug-88 RTK MULTI_TASK changes
+*/
+
+#include <stdio.h>
+#include "vista.h"
+#include "dbtype.h"
+
+
+/* Read contents of current record
+*/
+d_recread(rec TASK_PARM DBN_PARM)
+char FAR *rec; /* ptr to record area */
+TASK_DECL
+DBN_DECL
+{
+   INT  rt;     /* record type */
+   DB_ADDR dba;
+#ifndef SINGLE_USER
+   int dbopen_sv;
+#endif
+   RECORD_ENTRY FAR *rec_ptr;
+
+   DB_ENTER(DB_ID TASK_ID LOCK_SET(RECORD_IO));
+
+   if ( ! dbopen ) RETURN( dberr(S_DBOPEN) );
+
+   /* Make sure we have a current record */
+   if ( ! curr_rec )
+      RETURN( dberr(S_NOCR) );
+
+   /* set up to allow unlocked read access */
+#ifndef SINGLE_USER
+   dbopen_sv = dbopen;
+   dbopen = 2;
+#endif
+
+   /* read current record */
+   dio_read( curr_rec, (char FAR * FAR *)&crloc, NOPGHOLD);
+#ifndef SINGLE_USER
+   dbopen = dbopen_sv;
+#endif
+   if ( db_status != S_OKAY )
+      RETURN( db_status );
+
+   /* copy record type from record */
+   bytecpy(&rt, crloc, sizeof(INT));
+   if ( rt < 0 )
+      RETURN( db_status = S_DELETED );
+
+#ifndef SINGLE_USER
+   if ( rt & RLBMASK ) {
+      rt &= ~RLBMASK; /* mask off rlb */
+      rlb_status = S_LOCKED;
+   }
+   else {
+      rlb_status = S_UNLOCKED;
+   }
+#endif
+   rec_ptr = &record_table[NUM2INT(rt, rt_offset)];
+
+   /* Copy db_addr from record and check with curr_rec */
+   bytecpy(&dba, crloc+sizeof(INT), DB_ADDR_SIZE);
+   if ( ADDRcmp(&dba, &curr_rec) != 0 )
+      RETURN( dberr(S_INVADDR) );
+
+   /* Copy data from crloc into rec */
+   bytecpy(rec, &crloc[rec_ptr->rt_data], rec_ptr->rt_len - rec_ptr->rt_data);
+
+   RETURN( db_status = S_OKAY );
+}
+/* vpp -nOS2 -dUNIX -nBSD -nVANILLA_BSD -nVMS -nMEMLOCK -nWINDOWS -nFAR_ALLOC -f/usr/users/master/config/nonwin recread.c */