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- version39-41:1.1;
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- comment @ * @;
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- 1.2
- date 92.08.09.21.04.42; author amiga; state Exp;
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- 1.1
- date 92.06.08.15.10.10; author mwild; state Exp;
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- desc
- @initial checkin
- @
-
-
- 1.2
- log
- @paranoia
- @
- text
- @/*-
- * Copyright (c) 1990 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- */
-
- #if defined(LIBC_SCCS) && !defined(lint)
- static char sccsid[] = "@@(#)setvbuf.c 5.2 (Berkeley) 2/1/91";
- #endif /* LIBC_SCCS and not lint */
-
- #define KERNEL
- #include "ixemul.h"
-
- #include <stdio.h>
- #include <stdlib.h>
- #include "local.h"
-
- /*
- * Set one of the three kinds of buffering, optionally including
- * a buffer.
- */
- setvbuf(fp, buf, mode, size)
- register FILE *fp;
- char *buf;
- register int mode;
- register size_t size;
- {
-
- /*
- * Verify arguments. The `int' limit on `size' is due to this
- * particular implementation.
- */
- if (!fp || (mode != _IOFBF && mode != _IOLBF && mode != _IONBF) ||
- (int)size < 0)
- return (EOF);
-
- /*
- * Write current buffer, if any; drop read count, if any.
- * Make sure putc() will not think fp is line buffered.
- * Free old buffer if it was from malloc(). Clear line and
- * non buffer flags, and clear malloc flag.
- */
- (void) __sflush(fp);
- fp->_w = fp->_r = 0;
- fp->_lbfsize = 0;
- if (fp->_flags & __SMBF)
- free((void *)fp->_bf._base);
- fp->_flags &= ~(__SLBF|__SNBF|__SMBF);
-
- /*
- * Now put back whichever flag is needed, and fix _lbfsize
- * if line buffered. Ensure output flush on exit if the
- * stream will be buffered at all.
- */
- switch (mode) {
-
- case _IONBF:
- fp->_flags |= __SNBF;
- fp->_bf._base = fp->_p = fp->_nbuf;
- fp->_bf._size = 1;
- break;
-
- case _IOLBF:
- fp->_flags |= __SLBF;
- fp->_lbfsize = -size;
- /* FALLTHROUGH */
-
- case _IOFBF:
- /* no flag */
- /* __cleanup = _cleanup; */
- fp->_bf._base = fp->_p = (unsigned char *)buf;
- fp->_bf._size = size;
- break;
- }
-
- /*
- * Patch up write count if necessary.
- * Only (!) if we already have a buffer !
- */
- if ((fp->_flags & __SWR) && fp->_bf._base)
- fp->_w = (fp->_flags & (__SLBF|__SNBF)) ? 0 : size;
-
- return (0);
- }
- @
-
-
- 1.1
- log
- @Initial revision
- @
- text
- @d74 1
- a74 1
- fp->_r = 0;
- d111 1
- a111 1
- fp->_w = fp->_flags & (__SLBF|__SNBF) ? 0 : size;
- @
-