1 files changed, 0 insertions, 252 deletions
diff --git a/libc/stdio/fseek.c b/libc/stdio/fseek.c
deleted file mode 100644
index 0ac25e2..0000000
--- a/libc/stdio/fseek.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*	$OpenBSD: fseek.c,v 1.7 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 <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include "local.h"
-
-#define	POS_ERR	(-(fpos_t)1)
-
-/*
- * Seek the given file to the given offset.
- * `Whence' must be one of the three SEEK_* macros.
- */
-int
-fseeko(FILE *fp, off_t offset, int whence)
-{
-	fpos_t (*seekfn)(void *, fpos_t, int);
-	fpos_t target, curoff;
-	size_t n;
-	struct stat st;
-	int havepos;
-
-	/* make sure stdio is set up */
-	if (!__sdidinit)
-		__sinit();
-
-	/*
-	 * Have to be able to seek.
-	 */
-	if ((seekfn = fp->_seek) == NULL) {
-		errno = ESPIPE;			/* historic practice */
-		return (EOF);
-	}
-
-	/*
-	 * Change any SEEK_CUR to SEEK_SET, and check `whence' argument.
-	 * After this, whence is either SEEK_SET or SEEK_END.
-	 */
-	switch (whence) {
-
-	case SEEK_CUR:
-		/*
-		 * In order to seek relative to the current stream offset,
-		 * we have to first find the current stream offset a la
-		 * ftell (see ftell for details).
-		 */
-		__sflush(fp);	/* may adjust seek offset on append stream */
-		if (fp->_flags & __SOFF)
-			curoff = fp->_offset;
-		else {
-			curoff = (*seekfn)(fp->_cookie, (fpos_t)0, SEEK_CUR);
-			if (curoff == (fpos_t)-1)
-				return (EOF);
-		}
-		if (fp->_flags & __SRD) {
-			curoff -= fp->_r;
-			if (HASUB(fp))
-				curoff -= fp->_ur;
-		} else if (fp->_flags & __SWR && fp->_p != NULL)
-			curoff += fp->_p - fp->_bf._base;
-
-		offset += curoff;
-		whence = SEEK_SET;
-		havepos = 1;
-		break;
-
-	case SEEK_SET:
-	case SEEK_END:
-		curoff = 0;		/* XXX just to keep gcc quiet */
-		havepos = 0;
-		break;
-
-	default:
-		errno = EINVAL;
-		return (EOF);
-	}
-
-	/*
-	 * Can only optimise if:
-	 *	reading (and not reading-and-writing);
-	 *	not unbuffered; and
-	 *	this is a `regular' Unix file (and hence seekfn==__sseek).
-	 * We must check __NBF first, because it is possible to have __NBF
-	 * and __SOPT both set.
-	 */
-	if (fp->_bf._base == NULL)
-		__smakebuf(fp);
-	if (fp->_flags & (__SWR | __SRW | __SNBF | __SNPT))
-		goto dumb;
-	if ((fp->_flags & __SOPT) == 0) {
-		if (seekfn != __sseek ||
-		    fp->_file < 0 || fstat(fp->_file, &st) ||
-		    (st.st_mode & S_IFMT) != S_IFREG) {
-			fp->_flags |= __SNPT;
-			goto dumb;
-		}
-		fp->_blksize = st.st_blksize;
-		fp->_flags |= __SOPT;
-	}
-
-	/*
-	 * We are reading; we can try to optimise.
-	 * Figure out where we are going and where we are now.
-	 */
-	if (whence == SEEK_SET)
-		target = offset;
-	else {
-		if (fstat(fp->_file, &st))
-			goto dumb;
-		target = st.st_size + offset;
-	}
-
-	if (!havepos) {
-		if (fp->_flags & __SOFF)
-			curoff = fp->_offset;
-		else {
-			curoff = (*seekfn)(fp->_cookie, (fpos_t)0, SEEK_CUR);
-			if (curoff == POS_ERR)
-				goto dumb;
-		}
-		curoff -= fp->_r;
-		if (HASUB(fp))
-			curoff -= fp->_ur;
-	}
-
-	/*
-	 * Compute the number of bytes in the input buffer (pretending
-	 * that any ungetc() input has been discarded).  Adjust current
-	 * offset backwards by this count so that it represents the
-	 * file offset for the first byte in the current input buffer.
-	 */
-	if (HASUB(fp)) {
-		curoff += fp->_r;	/* kill off ungetc */
-		n = fp->_up - fp->_bf._base;
-		curoff -= n;
-		n += fp->_ur;
-	} else {
-		n = fp->_p - fp->_bf._base;
-		curoff -= n;
-		n += fp->_r;
-	}
-
-	/*
-	 * If the target offset is within the current buffer,
-	 * simply adjust the pointers, clear EOF, undo ungetc(),
-	 * and return.  (If the buffer was modified, we have to
-	 * skip this; see fgetln.c.)
-	 */
-	if ((fp->_flags & __SMOD) == 0 &&
-	    target >= curoff && target < (fpos_t)(curoff + n)) {
-		int o = target - curoff;
-
-		fp->_p = fp->_bf._base + o;
-		fp->_r = n - o;
-		if (HASUB(fp))
-			FREEUB(fp);
-		fp->_flags &= ~__SEOF;
-		return (0);
-	}
-
-	/*
-	 * The place we want to get to is not within the current buffer,
-	 * but we can still be kind to the kernel copyout mechanism.
-	 * By aligning the file offset to a block boundary, we can let
-	 * the kernel use the VM hardware to map pages instead of
-	 * copying bytes laboriously.  Using a block boundary also
-	 * ensures that we only read one block, rather than two.
-	 */
-	curoff = target & ~(fp->_blksize - 1);
-	if ((*seekfn)(fp->_cookie, curoff, SEEK_SET) == POS_ERR)
-		goto dumb;
-	fp->_r = 0;
- 	fp->_p = fp->_bf._base;
-	if (HASUB(fp))
-		FREEUB(fp);
-	fp->_flags &= ~__SEOF;
-	n = target - curoff;
-	if (n) {
-		if (__srefill(fp) || (size_t)fp->_r < n)
-			goto dumb;
-		fp->_p += n;
-		fp->_r -= n;
-	}
-	return (0);
-
-	/*
-	 * We get here if we cannot optimise the seek ... just
-	 * do it.  Allow the seek function to change fp->_bf._base.
-	 */
-dumb:
-	if (__sflush(fp) ||
-	    (*seekfn)(fp->_cookie, (fpos_t)offset, whence) == POS_ERR) {
-		return (EOF);
-	}
-	/* success: clear EOF indicator and discard ungetc() data */
-	if (HASUB(fp))
-		FREEUB(fp);
-	fp->_p = fp->_bf._base;
-	fp->_r = 0;
-	/* fp->_w = 0; */	/* unnecessary (I think...) */
-	fp->_flags &= ~__SEOF;
-	return (0);
-}
-
-/*
- * fseek()'s offset is a long and sizeof(off_t) != sizeof(long) on all arches
- */
-#if defined(__alpha__) && defined(__indr_reference)
-__indr_reference(fseeko, fseek);
-#else
-int
-fseek(FILE *fp, long offset, int whence)
-{
-	off_t off = offset;
-
-	return(fseeko(fp, off, whence));
-}
-#endif