cc17b27a2b
3 sets of libraries are built now: . ack: all libraries that ack can compile (/usr/lib/i386/) . clang+elf: all libraries with minix headers (/usr/lib/) . clang+elf: all libraries with netbsd headers (/usr/netbsd/) Once everything can be compiled with netbsd libraries and headers, the /usr/netbsd hierarchy will be obsolete and its libraries compiled with netbsd headers will be installed in /usr/lib, and its headers in /usr/include. (i.e. minix libc and current minix headers set will be gone.) To use the NetBSD libc system (libraries + headers) before it is the default libc, see: http://wiki.minix3.org/en/DevelopersGuide/UsingNetBSDCode This wiki page also documents the maintenance of the patch files of minix-specific changes to imported NetBSD code. Changes in this commit: . libsys: Add NBSD compilation and create a safe NBSD-based libc. . Port rest of libraries (except libddekit) to new header system. . Enable compilation of libddekit with new headers. . Enable kernel compilation with new headers. . Enable drivers compilation with new headers. . Port legacy commands to new headers and libc. . Port servers to new headers. . Add <sys/sigcontext.h> in compat library. . Remove dependency file in tree. . Enable compilation of common/lib/libc/atomic in libsys . Do not generate RCSID strings in libc. . Temporarily disable zoneinfo as they are incompatible with NetBSD format . obj-nbsd for .gitignore . Procfs: use only integer arithmetic. (Antoine Leca) . Increase ramdisk size to create NBSD-based images. . Remove INCSYMLINKS handling hack. . Add nbsd_include/sys/exec_elf.h . Enable ELF compilation with NBSD libc. . Add 'make nbsdsrc' in tools to download reference NetBSD sources. . Automate minix-port.patch creation. . Avoid using fstavfs() as it is *extremely* slow and unneeded. . Set err() as PRIVATE to avoid name clash with libc. . [NBSD] servers/vm: remove compilation warnings. . u32 is not a long in NBSD headers. . UPDATING info on netbsd hierarchy . commands fixes for netbsd libc
177 lines
4.3 KiB
C
177 lines
4.3 KiB
C
/* $NetBSD: opendir.c,v 1.37 2010/09/26 02:26:59 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[] = "@(#)opendir.c 8.7 (Berkeley) 12/10/94";
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#else
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__RCSID("$NetBSD: opendir.c,v 1.37 2010/09/26 02:26:59 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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#ifdef __minix
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#endif
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#include "extern.h"
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "dirent_private.h"
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static DIR *__opendir_common(int, const char *, int);
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__weak_alias(fdopendir,_fdopendir)
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/*
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* Open a directory.
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*/
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DIR *
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opendir(const char *name)
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{
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_DIAGASSERT(name != NULL);
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return (__opendir2(name, DTF_HIDEW|DTF_NODUP));
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}
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DIR *
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__opendir2(const char *name, int flags)
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{
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int fd;
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if ((fd = open(name, O_RDONLY | O_NONBLOCK)) == -1)
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return NULL;
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return __opendir_common(fd, name, flags);
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}
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#ifndef __LIBC12_SOURCE__
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DIR *
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_fdopendir(int fd)
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{
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return __opendir_common(fd, NULL, DTF_HIDEW|DTF_NODUP);
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}
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#endif
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static DIR *
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__opendir_common(int fd, const char *name, int flags)
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{
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DIR *dirp = NULL;
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int serrno;
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struct stat sb;
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#ifndef __minix
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struct statvfs sfb;
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#endif
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int error;
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if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1)
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goto error;
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if (fstat(fd, &sb) || !S_ISDIR(sb.st_mode)) {
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errno = ENOTDIR;
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goto error;
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}
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if ((dirp = (DIR *)malloc(sizeof(DIR))) == NULL)
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goto error;
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dirp->dd_buf = NULL;
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dirp->dd_internal = NULL;
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#ifdef _REENTRANT
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if (__isthreaded) {
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if ((dirp->dd_lock = malloc(sizeof(mutex_t))) == NULL)
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goto error;
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mutex_init((mutex_t *)dirp->dd_lock, NULL);
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}
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#endif
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/*
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* Tweak flags for the underlying filesystem.
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*/
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#ifdef __minix
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/* MOUNT_UNION and MOUNT_NFS not supported */
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flags &= ~DTF_NODUP;
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#else
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if (fstatvfs1(fd, &sfb, ST_NOWAIT) < 0)
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goto error;
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if ((flags & DTF_NODUP) != 0) {
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if (!strncmp(sfb.f_fstypename, MOUNT_UNION,
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sizeof(sfb.f_fstypename)) ||
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(sfb.f_flag & MNT_UNION) != 0) {
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flags |= __DTF_READALL;
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} else {
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flags &= ~DTF_NODUP;
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}
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}
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if (!strncmp(sfb.f_fstypename, MOUNT_NFS, sizeof(sfb.f_fstypename))) {
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flags |= __DTF_READALL | __DTF_RETRY_ON_BADCOOKIE;
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}
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#endif
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dirp->dd_flags = flags;
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error = _initdir(dirp, fd, name);
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if (error) {
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errno = error;
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goto error;
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}
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return (dirp);
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error:
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serrno = errno;
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if (dirp != NULL) {
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#ifdef _REENTRANT
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if (__isthreaded) {
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mutex_destroy((mutex_t *)dirp->dd_lock);
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free(dirp->dd_lock);
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}
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#endif
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free(dirp->dd_buf);
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}
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free(dirp);
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if (fd != -1)
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(void)close(fd);
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errno = serrno;
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return NULL;
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}
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