Format
#include <recio.h>
int _Rfeov(_RFILE *fp);Language Level: ILE C Extension
Threadsafe: Yes.
Description
The _Rfeov() function forces an end-of-volume condition for a tape file that is associated with the file that is specified by fp. The _Rfeov()function positions the file to the next volume of the file. If the file is open for output, the output buffers will be flushed.
The _Rfeov() function is valid for tape files.
Return Value
The _Rfeov() function returns 1 if the file has moved from one volume to the next. It will return EOF if it is called while processing the last volume of the file. It will return zero if the operation is unsuccessful. The value of errno may be set to EIOERROR (a non-recoverable error occurred) or EIORECERR (a recoverable I/O error occurred). See Table 12 and Table 14 for errno settings.
Example that uses _Rfeov()
#include <stdio.h>
#include <recio.h>
#include <stdlib.h>
int main(void)
{
_RFILE *tape;
_RFILE *fp;
char buf[92];
int i, feov2;
/* Open source physical file containing C source. */
if (( fp = _Ropen ( "QCSRC(T1677SRC)", "rr blkrcd=y" )) == NULL )
{
printf ( "could not open C source file\n" );
exit ( 1 );
}
/* Open tape file to receive C source statements */
if (( tape = _Ropen ( "T1677TPF", "wr lrecl=92 blkrcd=y" )) == NULL )
{
printf ( "could not open tape file\n" );
exit ( 2 );
}
/* Read the C source statements, find their sizes */
/* and add them to the tape file. */
while (( _Rreadn ( fp, buf, sizeof(buf), __DFT )) -> num_bytes != EOF
)
{
for ( i = sizeof(buf) - 1 ; buf[i] == ' ' && i > 12; --i );
i = (i == 12) ? 80 : (1-12);
memmove( buf, buf+12, i );
_Rwrite ( tape, buf, i );
}
feov2 = _Rfeov (fp);
_Rclose ( fp );
_Rclose ( tape );
}Related Information