add emulation of Linux truncate64(2), ftruncate64(2), *stat64(2)
This commit is contained in:
jdolecek
parent
4944313b38
commit
daff00c255
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@ -1,4 +1,4 @@
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/* $NetBSD: linux_commons.c,v 1.1 1999/01/03 05:29:31 erh Exp $ */
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/* $NetBSD: linux_commons.c,v 1.2 2000/12/12 19:01:59 jdolecek Exp $ */
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/*
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* This file includes C files from the common
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@ -25,6 +25,7 @@
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#include <sys/syscallargs.h>
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#include "../../common/linux_pipe.c"
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#include "../../common/linux_file64.c"
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#include "../../common/linux_ipccall.c"
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#include "../../common/linux_misc_notalpha.c"
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#include "../../common/linux_sig_notalpha.c"
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@ -1,4 +1,4 @@
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$NetBSD: syscalls.master,v 1.47 2000/12/09 12:23:36 jdolecek Exp $
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$NetBSD: syscalls.master,v 1.48 2000/12/12 19:01:59 jdolecek Exp $
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; @(#)syscalls.master 8.1 (Berkeley) 7/19/93
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@ -319,11 +319,16 @@
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190 NOARGS { int sys___vfork14(void); }
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191 UNIMPL getrlimit
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192 UNIMPL mmap2
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193 UNIMPL truncate64
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194 UNIMPL ftruncate64
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195 UNIMPL stat64
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196 UNIMPL lstat64
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197 UNIMPL fstat64
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193 NOARGS truncate64 { int sys_truncate(const char *path, \
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off_t length); }
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194 NOARGS ftruncate64 { int sys_ftruncate(const char *path, \
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off_t length); }
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195 STD { int linux_sys_stat64(const char *path, \
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struct linux_stat64 *sp); }
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196 STD { int linux_sys_lstat64(const char *path, \
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struct linux_stat64 *sp); }
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197 STD { int linux_sys_fstat64(int fd, \
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struct linux_stat64 *sp); }
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198 UNIMPL lchown
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199 UNIMPL getuid
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200 UNIMPL getgid
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@ -1,4 +1,4 @@
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# $NetBSD: files.linux_m68k,v 1.1 1998/12/15 19:25:40 itohy Exp $
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# $NetBSD: files.linux_m68k,v 1.2 2000/12/12 19:02:00 jdolecek Exp $
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#
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# Config file description for m68k-dependent Linux compat code.
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@ -9,6 +9,7 @@ file compat/linux/arch/m68k/linux_sysent.c compat_linux
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file compat/linux/arch/m68k/linux_sigarray.c compat_linux
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file compat/linux/common/linux_pipe.c compat_linux
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file compat/linux/common/linux_file64.c compat_linux
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file compat/linux/common/linux_ipccall.c compat_linux
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file compat/linux/common/linux_misc_notalpha.c compat_linux
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file compat/linux/common/linux_sig_notalpha.c compat_linux
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@ -1,4 +1,4 @@
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$NetBSD: syscalls.master,v 1.21 2000/12/09 12:23:36 jdolecek Exp $
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$NetBSD: syscalls.master,v 1.22 2000/12/12 19:02:00 jdolecek Exp $
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; @(#)syscalls.master 8.1 (Berkeley) 7/19/93
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@ -337,11 +337,16 @@
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190 NOARGS { int sys___vfork14(void); }
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191 UNIMPL getrlimit
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192 UNIMPL mmap2
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193 UNIMPL truncate64
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194 UNIMPL ftruncate64
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195 UNIMPL stat64
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196 UNIMPL lstat64
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197 UNIMPL fstat64
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193 NOARGS truncate64 { int sys_truncate(const char *path, \
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off_t length); }
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194 NOARGS ftruncate64 { int sys_ftruncate(const char *path, \
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off_t length); }
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195 STD { int linux_sys_stat64(const char *path, \
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struct linux_stat64 *sp); }
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196 STD { int linux_sys_lstat64(const char *path, \
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struct linux_stat64 *sp); }
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197 STD { int linux_sys_fstat64(int fd, \
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struct linux_stat64 *sp); }
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198 UNIMPL lchown
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199 UNIMPL getuid
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200 UNIMPL getgid
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@ -0,0 +1,205 @@
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/* $NetBSD: linux_file64.c,v 1.1 2000/12/12 19:02:00 jdolecek Exp $ */
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/*-
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* Copyright (c) 1995, 1998, 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Frank van der Linden and Eric Haszlakiewicz.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Linux 64bit filesystem calls. Used on 32bit archs, not used on 64bit ones.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/proc.h>
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#include <sys/file.h>
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#include <sys/stat.h>
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#include <sys/filedesc.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/mount.h>
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#include <sys/malloc.h>
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#include <sys/vnode.h>
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#include <sys/tty.h>
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#include <sys/conf.h>
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#include <sys/syscallargs.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_signal.h>
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#include <compat/linux/common/linux_fcntl.h>
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#include <compat/linux/common/linux_util.h>
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#include <compat/linux/common/linux_machdep.h>
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#include <compat/linux/linux_syscallargs.h>
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static void bsd_to_linux_stat __P((struct stat *, struct linux_stat64 *));
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static int linux_do_stat64 __P((struct proc *, void *, register_t *, int));
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/*
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* Convert a NetBSD stat structure to a Linux stat structure.
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* Only the order of the fields and the padding in the structure
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* is different. linux_fakedev is a machine-dependent function
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* which optionally converts device driver major/minor numbers
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* (XXX horrible, but what can you do against code that compares
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* things against constant major device numbers? sigh)
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*/
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static void
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bsd_to_linux_stat(bsp, lsp)
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struct stat *bsp;
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struct linux_stat64 *lsp;
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{
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lsp->lst_dev = bsp->st_dev;
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lsp->lst_ino = bsp->st_ino;
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lsp->lst_mode = (linux_mode_t)bsp->st_mode;
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if (bsp->st_nlink >= (1 << 15))
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lsp->lst_nlink = (1 << 15) - 1;
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else
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lsp->lst_nlink = (linux_nlink_t)bsp->st_nlink;
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lsp->lst_uid = bsp->st_uid;
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lsp->lst_gid = bsp->st_gid;
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lsp->lst_rdev = linux_fakedev(bsp->st_rdev);
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lsp->lst_size = bsp->st_size;
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lsp->lst_blksize = bsp->st_blksize;
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lsp->lst_blocks = bsp->st_blocks;
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lsp->lst_atime = bsp->st_atime;
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lsp->lst_mtime = bsp->st_mtime;
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lsp->lst_ctime = bsp->st_ctime;
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}
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/*
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* The stat functions below are plain sailing. stat and lstat are handled
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* by one function to avoid code duplication.
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*/
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int
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linux_sys_fstat64(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_fstat64_args /* {
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syscallarg(int) fd;
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syscallarg(linux_stat64 *) sp;
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} */ *uap = v;
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struct sys___fstat13_args fsa;
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struct linux_stat64 tmplst;
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struct stat *st,tmpst;
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caddr_t sg;
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int error;
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sg = stackgap_init(p->p_emul);
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st = stackgap_alloc(&sg, sizeof (struct stat));
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SCARG(&fsa, fd) = SCARG(uap, fd);
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SCARG(&fsa, sb) = st;
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if ((error = sys___fstat13(p, &fsa, retval)))
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return error;
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if ((error = copyin(st, &tmpst, sizeof tmpst)))
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return error;
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bsd_to_linux_stat(&tmpst, &tmplst);
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if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst)))
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return error;
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return 0;
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}
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static int
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linux_do_stat64(p, v, retval, dolstat)
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struct proc *p;
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void *v;
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register_t *retval;
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int dolstat;
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{
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struct sys___stat13_args sa;
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struct linux_stat64 tmplst;
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struct stat *st, tmpst;
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caddr_t sg;
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int error;
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struct linux_sys_stat64_args *uap = v;
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sg = stackgap_init(p->p_emul);
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st = stackgap_alloc(&sg, sizeof (struct stat));
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CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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SCARG(&sa, ub) = st;
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SCARG(&sa, path) = SCARG(uap, path);
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if ((error = (dolstat ? sys___lstat13(p, &sa, retval) :
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sys___stat13(p, &sa, retval))))
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return error;
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if ((error = copyin(st, &tmpst, sizeof tmpst)))
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return error;
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bsd_to_linux_stat(&tmpst, &tmplst);
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if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst)))
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return error;
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return 0;
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}
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int
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linux_sys_stat64(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_stat64_args /* {
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syscallarg(const char *) path;
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syscallarg(struct linux_stat64 *) sp;
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} */ *uap = v;
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return linux_do_stat64(p, uap, retval, 0);
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}
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int
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linux_sys_lstat64(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_lstat64_args /* {
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syscallarg(const char *) path;
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syscallarg(struct linux_stat64 *) sp;
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} */ *uap = v;
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return linux_do_stat64(p, uap, retval, 1);
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}
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