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- /* Copyright (c) 1989 Citadel */
- /* All Rights Reserved */
-
- /* #ident "@(#)cbgetrf.c 1.5 - 91/09/23" */
-
- #include <ansi.h>
-
- /* ansi headers */
- #include <errno.h>
-
- /* library headers */
- #include <blkio.h>
- #include <lseq.h>
-
- /* local headers */
- #include "cbase_.h"
-
- /*man---------------------------------------------------------------------------
- NAME
- cbgetrf - get cbase record field
-
- SYNOPSIS
- #include <cbase.h>
-
- int cbgetrf(cbp, field, buf)
- cbase_t *cbp;
- int field;
- void *buf;
-
- DESCRIPTION
- The cbgetrf function reads the specified field from the current
- record of cbase cbp into buf. buf must point to a storage area
- of size no less than the size of the specified field.
-
- cbgetrf will fail if one or more of the following is true:
-
- [EINVAL] cbp is not a valid cbase pointer.
- [EINVAL] field is not a valid field number for
- cbase cbp.
- [EINVAL] buf is the NULL pointer.
- [CBELOCK] cbp is not read locked.
- [CBENOPEN] cbp is not open.
- [CBENREC] The record cursor for cbp is null.
-
- SEE ALSO
- cbcursor, cbgetr, cbputrf.
-
- DIAGNOSTICS
- Upon successful completion, a value of 0 is returned. Otherwise,
- a value of -1 is returned, and errno set to indicate the error.
-
- ------------------------------------------------------------------------------*/
- #ifdef AC_PROTO
- int cbgetrf(cbase_t *cbp, int field, void *buf)
- #else
- int cbgetrf(cbp, field, buf)
- cbase_t *cbp;
- int field;
- void *buf;
- #endif
- {
- /* validate arguments */
- if (!cb_valid(cbp) || buf == NULL) {
- errno = EINVAL;
- return -1;
- }
-
- /* check if not open */
- if (!(cbp->flags & CBOPEN)) {
- errno = CBENOPEN;
- return -1;
- }
-
- /* validate field argument */
- if (field < 0 || field >= cbp->fldc) {
- errno = EINVAL;
- return -1;
- }
-
- /* check if not read locked */
- if (!(cbp->flags & CBRDLCK)) {
- errno = CBELOCK;
- return -1;
- }
-
- /* check if cursor is null */
- if (lscursor(cbp->lsp) == NULL) {
- errno = CBENREC;
- return -1;
- }
-
- /* read field */
- if (lsgetrf(cbp->lsp, cbp->fldv[field].offset, buf, cbp->fldv[field].len) == -1) {
- CBEPRINT;
- return -1;
- }
-
- return 0;
- }