bputh.cpp

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/*	Copyright (c) 1989 Citadel	*/
/*	   All Rights Reserved    	*/

/* #ident	"@(#)bputh.c	1.4 - 90/06/20" */

/* ansi headers */
/*#include <stddef.h>*/

/* local headers */
#include "blkio_.h"

/*man---------------------------------------------------------------------------
NAME
     bputh - put the header into a block file

SYNOPSIS
     #include <blkio.h>

     int bputh(bp, buf)
     BLKFILE *bp;
     const void *buf;

DESCRIPTION
     The bputh function writes the the contents of buf into the header
     of block file bp.  buf must point to a storage area at least as
     large as the header size for bp.

     bputh will fail if one or more of the following is true:

     [EINVAL]       bp is not a valid block file.
     [EINVAL]       buf is the NULL pointer.
     [BENOPEN]      bp is not open for writing.

SEE ALSO
     bgeth, bputhf, bputb.

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 bputh(BLKFILE *bp, const void *buf)
{
	return bputhf(bp, (size_t)0, buf, bp->hdrsize);
}