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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:13 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:13 -0800 |
commit | 1767f908af327fa388b1c66883760ad851267013 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /libc/stdio/refill.c | |
parent | a799b53f10e5a6fd51fef4436cfb7ec99836a516 (diff) | |
download | bionic-1767f908af327fa388b1c66883760ad851267013.zip bionic-1767f908af327fa388b1c66883760ad851267013.tar.gz bionic-1767f908af327fa388b1c66883760ad851267013.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'libc/stdio/refill.c')
-rw-r--r-- | libc/stdio/refill.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/libc/stdio/refill.c b/libc/stdio/refill.c deleted file mode 100644 index 74b378e..0000000 --- a/libc/stdio/refill.c +++ /dev/null @@ -1,121 +0,0 @@ -/* $OpenBSD: refill.c,v 1.8 2005/08/08 08:05:36 espie Exp $ */ -/*- - * Copyright (c) 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Chris Torek. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include "local.h" - -static int -lflush(FILE *fp) -{ - - if ((fp->_flags & (__SLBF|__SWR)) == (__SLBF|__SWR)) - return (__sflush(fp)); - return (0); -} - -/* - * Refill a stdio buffer. - * Return EOF on eof or error, 0 otherwise. - */ -int -__srefill(FILE *fp) -{ - - /* make sure stdio is set up */ - if (!__sdidinit) - __sinit(); - - fp->_r = 0; /* largely a convenience for callers */ - - /* SysV does not make this test; take it out for compatibility */ - if (fp->_flags & __SEOF) - return (EOF); - - /* if not already reading, have to be reading and writing */ - if ((fp->_flags & __SRD) == 0) { - if ((fp->_flags & __SRW) == 0) { - errno = EBADF; - fp->_flags |= __SERR; - return (EOF); - } - /* switch to reading */ - if (fp->_flags & __SWR) { - if (__sflush(fp)) - return (EOF); - fp->_flags &= ~__SWR; - fp->_w = 0; - fp->_lbfsize = 0; - } - fp->_flags |= __SRD; - } else { - /* - * We were reading. If there is an ungetc buffer, - * we must have been reading from that. Drop it, - * restoring the previous buffer (if any). If there - * is anything in that buffer, return. - */ - if (HASUB(fp)) { - FREEUB(fp); - if ((fp->_r = fp->_ur) != 0) { - fp->_p = fp->_up; - return (0); - } - } - } - - if (fp->_bf._base == NULL) - __smakebuf(fp); - - /* - * Before reading from a line buffered or unbuffered file, - * flush all line buffered output files, per the ANSI C - * standard. - */ - if (fp->_flags & (__SLBF|__SNBF)) - (void) _fwalk(lflush); - fp->_p = fp->_bf._base; - fp->_r = (*fp->_read)(fp->_cookie, (char *)fp->_p, fp->_bf._size); - fp->_flags &= ~__SMOD; /* buffer contents are again pristine */ - if (fp->_r <= 0) { - if (fp->_r == 0) - fp->_flags |= __SEOF; - else { - fp->_r = 0; - fp->_flags |= __SERR; - } - return (EOF); - } - return (0); -} |