.\" $Id: JAM_WriteMBHeader.3,v 1.1 2002/11/09 00:37:16 raorn Exp $
.\"
.TH JAM_WriteMBHeader 3 2002-11-07 "" "JAM subroutine library"
.SH NAME
JAM_WriteMBHeader \- Write message base header
.SH SYNOPSIS
.nf
.B #include <jamlib/jam.h>

.BI "int JAM_WriteMBHeader(s_JamBase*       " Base_PS ","
.BI "                      s_JamBaseHeader* " Header_PS ");"
.RE
.fi
.SH DESCRIPTION
Increases the ModCounter field by one, resets the header signature
and writes the message base header to the start of the JAM header
file.
.SS Arguments
.TP
.I Base_PS
The message base to use
.TP
.I Header_PS
A pointer to the base header to be stored
.SH "RETURN VALUE"
.TP
.B 0
if successful
.TP
.B JAM_IO_ERROR
if an I/O error occured. See
.BR JAM_Errno (3)
.TP
.B JAM_BAD_PARAM
if Base_PS or Header_PS is NULL
.TP
.B JAM_NOT_LOCKED
if the message base is not locked
.SH EXAMPLES
.nf
s_JamBaseHeader BaseHeader_S;
int             Result_I;

/* modify header here */

Result_I = JAM_WriteMBHeader(&BaseHeader_S);
if (Result_I)
  printf("JAM_WriteMBHeader returned %d.\\n", Result_I);
.fi
.SH AUTHOR
This manual page was created by Sir Raorn <raorn@altlinux.ru>,
based on original JAMlib documentation by Bjorn Stenberg
<bjorn@haxx.nu> and Johan Billing <billing@df.lth.se>.
.SH SEE ALSO
.BR jamlib (3),
.BR JAM_ReadMBHeader (3),
.BR JAM_LockMB (3),
.BR JAM_Errno (3)
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