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

cde/lib/tt/mini_isam/iswrite.c

@@ -0,0 +1,113 @@
+/*%%  (c) Copyright 1993, 1994 Hewlett-Packard Company			 */
+/*%%  (c) Copyright 1993, 1994 International Business Machines Corp.	 */
+/*%%  (c) Copyright 1993, 1994 Sun Microsystems, Inc.			 */
+/*%%  (c) Copyright 1993, 1994 Novell, Inc. 				 */
+/*%%  $XConsortium: iswrite.c /main/3 1995/10/23 11:46:15 rswiston $ 			 				 */
+#ifndef lint
+static char sccsid[] = "@(#)iswrite.c 1.8 89/07/17 Copyr 1988 Sun Micro";
+#endif
+/*
+ * Copyright (c) 1988 by Sun Microsystems, Inc.
+ */
+
+/*
+ * iswrite.c
+ *
+ * Description:
+ *	Write a record to ISAM file. 
+ */
+
+
+#include "isam_impl.h"
+#include <sys/file.h>
+#include <sys/time.h>
+
+static int _am_write();
+
+/*
+ * err =  iswrite(isfd, record)
+ *
+ * Iswrite() adds a new record to an ISAM file. All indexes of the ISAM
+ * file are updated.
+ *
+ * Current record position is not changed.
+ * isrecnum is set to indicate the new record.
+ *
+ * If the ISAM file is for variable length records, the isreclen variable
+ * must be set to indicate the actual length of the record, which must
+ * be between the minimum and maximum length, as specified in isbuild().
+ *
+ * Returns 0 if successful, or -1 of any error.
+ *
+ * Errors:
+ *	EDUPL	The write woul result in a duplicate on a key that
+ *		does not allow duplicates.
+ *	ELOCKED The file has been locked by another process.
+ *	ENOTOPEN isfd does not correspond to an open ISAM file, or the
+ *		ISAM file was opened with ISINPUT mode.
+ *	EBADARG Unacceptable value of isreclen for variable length record.
+ */
+
+int 
+iswrite(isfd, record)
+    int			isfd;
+    char		*record;
+{
+    int			_am_write();
+    register Fab	*fab;
+    int			reclen;
+    Recno		recnum;
+    Bytearray		curpos;
+    int			ret;
+
+    /*
+     * Get File Access Block.
+     */
+    if ((fab = _isfd_find(isfd)) == NULL) {
+	_setiserrno2(ENOTOPEN, '9', '0');
+	return (ISERROR);
+    }
+
+    /*
+     * Check that the open mode was ISOUTPUT, or ISINOUT.
+     */
+    if (fab->openmode != OM_OUTPUT && fab->openmode != OM_INOUT) {
+	_setiserrno2(ENOTOPEN, '9', '0');
+	return (ISERROR);
+    }
+
+    /*
+     * Determine record length. Check it against min and max record length.
+     */
+    reclen = (fab->varlength == TRUE) ? isreclen : fab->minreclen;
+    if (reclen < fab->minreclen || reclen > fab->maxreclen) {
+	_setiserrno2(EBADARG, '9', '0');
+	return (ISERROR);
+    }
+
+    /*
+     * Call the Access Method
+     */
+    curpos = _bytearr_dup(&fab->curpos);
+
+    if ((ret = _am_write(fab, record, reclen, &curpos, &recnum)) == ISOK) {
+	isrecnum = recnum;		     /* Set isrecnum */
+    }
+    _bytearr_free(&curpos);
+
+    _seterr_errcode(&fab->errcode);
+
+    return (ret);			     /* Successful write */
+}
+
+
+Static int _am_write(fab, record, reclen, curpos, recnum)
+    register Fab	*fab;
+    char		*record;
+    int			reclen;
+    Bytearray		*curpos;
+    Recno		*recnum;
+{
+    return (_amwrite(&fab->isfhandle, record, reclen,
+		     curpos, recnum, &fab->errcode));
+}