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CBSETRCU.C
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1989-08-31
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/* Copyright (c) 1989 Citadel */
/* All Rights Reserved */
/* #ident "cbsetrcu.c 1.1 - 89/08/31" */
#include <blkio.h>
#include <errno.h>
#include <lseq.h>
#include "cbase_.h"
/*man---------------------------------------------------------------------------
NAME
cbsetrcur - set cbase record cursor
SYNOPSIS
#include <cbase.h>
int cbsetrcur(cbp, cbrpos_p)
cbase_t *cbp;
cbrpos_t *cbrpos_p;
DESCRIPTION
The cbsetrcur function sets the position of the record cursor of
cbase cbp to the value pointed to by cbpos_p. If cbrpos_p is the
NULL pointer, the record cursor is set to null.
cbsetrcur will fail if one or more of the following is true:
[EINVAL] cbp is not a valid cbase pointer.
[CBELOCK] cbp is not locked.
[CBENOPEN] cbp is not open.
SEE ALSO
cbgetrcur, cbrcursor, cbsetkcur.
DIAGNOSTICS
Upon successful completion, a value of 0 is returned. Otherwise, a
value of -1 is returned, and errno set to indicate the error.
------------------------------------------------------------------------------*/
int cbsetrcur(cbp, cbrpos_p)
cbase_t * cbp;
cbrpos_t * cbrpos_p;
{
int rs = 0;
lspos_t lspos = 0;
errno = 0;
/* validate arguments */
if (!cb_valid(cbp)) {
errno = EINVAL;
return -1;
}
/* check if not open */
if (!(cbp->flags & CBOPEN)) {
errno = CBENOPEN;
return -1;
}
/* check if not locked */
if (!(cbp->flags & CBLOCKS)) {
errno = CBELOCK;
return -1;
}
/* set record cursor position */
if (cbrpos_p == NULL) {
rs = lssetcur(cbp->lsp, NULL);
} else {
lspos = *cbrpos_p;
rs = lssetcur(cbp->lsp, &lspos);
}
if (rs == -1) {
CBEPRINT;
return -1;
}
errno = 0;
return 0;
}