75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
/*
|
|
* fflush.c - flush stream(s)
|
|
*/
|
|
/* $Id$ */
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include "loc_incl.h"
|
|
|
|
int
|
|
fflush(FILE *stream)
|
|
{
|
|
int count, c1, i, retval = 0;
|
|
|
|
if (!stream) {
|
|
for(i= 0; i < FOPEN_MAX; i++)
|
|
if (__iotab[i] && fflush(__iotab[i]))
|
|
retval = EOF;
|
|
return retval;
|
|
}
|
|
|
|
if (!stream->_buf
|
|
|| (!io_testflag(stream, _IOREADING)
|
|
&& !io_testflag(stream, _IOWRITING)))
|
|
return 0;
|
|
if (io_testflag(stream, _IOREADING)) {
|
|
/* (void) fseek(stream, 0L, SEEK_CUR); */
|
|
int adjust = 0;
|
|
if (stream->_buf && !io_testflag(stream,_IONBF))
|
|
adjust = stream->_count;
|
|
stream->_count = 0;
|
|
lseek(fileno(stream), (off_t) adjust, SEEK_CUR);
|
|
if (io_testflag(stream, _IOWRITE))
|
|
stream->_flags &= ~(_IOREADING | _IOWRITING);
|
|
stream->_ptr = stream->_buf;
|
|
return 0;
|
|
} else if (io_testflag(stream, _IONBF)) return 0;
|
|
|
|
if (io_testflag(stream, _IOREAD)) /* "a" or "+" mode */
|
|
stream->_flags &= ~_IOWRITING;
|
|
|
|
count = stream->_ptr - stream->_buf;
|
|
stream->_ptr = stream->_buf;
|
|
|
|
if ( count <= 0 )
|
|
return 0;
|
|
|
|
if (io_testflag(stream, _IOAPPEND)) {
|
|
if (lseek(fileno(stream), 0L, SEEK_END) == -1) {
|
|
stream->_flags |= _IOERR;
|
|
return EOF;
|
|
}
|
|
}
|
|
c1 = write(stream->_fd, (char *)stream->_buf, count);
|
|
|
|
stream->_count = 0;
|
|
|
|
if ( count == c1 )
|
|
return 0;
|
|
|
|
stream->_flags |= _IOERR;
|
|
return EOF;
|
|
}
|
|
|
|
void
|
|
__cleanup(void)
|
|
{
|
|
register int i;
|
|
|
|
for(i= 0; i < FOPEN_MAX; i++)
|
|
if (__iotab[i] && io_testflag(__iotab[i], _IOWRITING))
|
|
(void) fflush(__iotab[i]);
|
|
}
|