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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "_stdio.h"
#if defined _POSIX_SOURCE || defined _POSIX_C_SOURCE || defined _XOPEN_SOURCE
#include <sys/types.h>
#include <unistd.h>
#else
#define close(fd) -1
#endif
/** close a file stream **/
int fclose(FILE *stream)
{
flockfile(stream);
if (fflush(stream) == EOF) {
/* set errno */
return EOF;
}
if (stream->buf != stream->ibuf) {
if (stream->ibuf[0] == 'a') {
free(stream->buf);
}
}
if (close(stream->fd) == -1) {
/* errno is set automatically */
funlockfile(stream);
return EOF;
}
memset(stream, '\0', sizeof(*stream));
/*
RETURN_SUCCESS(0);
RETURN_FAILURE(CONSTANT(EOF));
*/
return 0;
}
/***
function closes ARGUMENT(stream) and its associated file. Any
unwritten data is flushed before closing. Any unread data is discarded. If the
buffer was automatically allocated, it is freed.
***/
/*
STDC(1)
*/
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