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/***
*closeall.c - close all open files
*
* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines _fcloseall() - closes all open files except stdin, stdout
* stdprn, stderr, and stdaux.
*
*Revision History:
* 09-19-83 RN initial version
* 06-26-87 JCR Stream search starts with _iob[3] for OS/2
* 11-02-87 JCR Multi-thread support
* 11-08-87 SKS Changed PROTMODE to OS2
* 12-11-87 JCR Added "_LOAD_DS" to declaration
* 05-31-88 PHG Merged DLL and normal versions
* 06-14-88 JCR Use near pointer to reference _iob[] entries
* 08-24-88 GJF Added check that OS2 is defined whenever M_I386 is.
* 08-17-89 GJF Clean up, now specific to OS/2 2.0 (i.e., 386 flat
* model). Also fixed copyright and indents.
* 02-15-90 GJF Fixed copyright
* 03-16-90 GJF Made calling type _CALLTYPE1, added #include
* <cruntime.h> and removed #include <register.h>.
* 10-03-90 GJF New-style function declarator.
* 01-21-91 GJF ANSI naming.
* 03-25-92 DJM POSIX support
*
*******************************************************************************/
#include <cruntime.h>
#include <stdio.h>
#include <file2.h>
#include <internal.h>
#include <os2dll.h>
/***
*int _fcloseall() - close all open streams
*
*Purpose:
* Closes all streams currently open except for stdin/out/err/aux/prn.
* tmpfile() files are among those closed.
*
*Entry:
* None.
*
*Exit:
* returns number of streams closed if OK
* returns EOF if fails.
*
*Exceptions:
*
*******************************************************************************/
int _CALLTYPE1 _fcloseall (
void
)
{
REG1 FILE *stream = &_iob[3];
REG2 int count = 0;
_mlock(_IOB_SCAN_LOCK);
for (; stream <= _lastiob; stream++)
if (fclose(stream) != EOF)
count++;
_munlock(_IOB_SCAN_LOCK);
return(count);
}
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