84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/* $NetBSD: telldir.c,v 1.20 2013/03/06 11:27:28 yamt Exp $ */
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/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)telldir.c 8.1 (Berkeley) 6/4/93";
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#else
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__RCSID("$NetBSD: telldir.c,v 1.20 2013/03/06 11:27:28 yamt Exp $");
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#endif
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include "reentrant.h"
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#include "extern.h"
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#include <sys/param.h>
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#include <assert.h>
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#include <dirent.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "dirent_private.h"
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#ifdef __weak_alias
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__weak_alias(telldir,_telldir)
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#endif
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long
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telldir(DIR *dirp)
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{
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long rv;
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#ifdef _REENTRANT
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if (__isthreaded) {
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mutex_lock((mutex_t *)dirp->dd_lock);
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rv = _telldir_unlocked(dirp);
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mutex_unlock((mutex_t *)dirp->dd_lock);
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} else
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#endif
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rv = _telldir_unlocked(dirp);
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return rv;
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}
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/*
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* return a pointer into a directory
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*/
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long
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_telldir_unlocked(DIR *dirp)
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{
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struct dirpos *lp;
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for (lp = dirp->dd_internal; lp; lp = lp->dp_next)
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if (lp->dp_seek == dirp->dd_seek &&
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lp->dp_loc == dirp->dd_loc)
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return (intptr_t)lp;
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if ((lp = malloc(sizeof(*lp))) == NULL)
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return (-1);
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lp->dp_seek = dirp->dd_seek;
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lp->dp_loc = dirp->dd_loc;
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lp->dp_next = dirp->dd_internal;
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dirp->dd_internal = lp;
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return (intptr_t)lp;
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}
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/*
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* seek to an entry in a directory.
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* Only values returned by "telldir" should be passed to seekdir.
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*/
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void
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_seekdir_unlocked(DIR *dirp, long loc)
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{
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struct dirpos *lp;
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_DIAGASSERT(dirp != NULL);
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for (lp = dirp->dd_internal; lp; lp = lp->dp_next)
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if ((intptr_t)lp == loc)
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break;
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if (lp == NULL)
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return;
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if (lp->dp_loc == dirp->dd_loc && lp->dp_seek == dirp->dd_seek)
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return;
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dirp->dd_seek = lseek(dirp->dd_fd, lp->dp_seek, SEEK_SET);
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dirp->dd_loc = 0;
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while (dirp->dd_loc < lp->dp_loc)
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if (_readdir_unlocked(dirp, 0) == NULL)
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break;
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}
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