266 lines
7.0 KiB
C
266 lines
7.0 KiB
C
/* $NetBSD: linux_file64.c,v 1.6 2001/11/13 02:08:52 lukem Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1995, 1998, 2000 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Frank van der Linden and Eric Haszlakiewicz.
|
|
*
|
|
* 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 NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
|
|
/*
|
|
* Linux 64bit filesystem calls. Used on 32bit archs, not used on 64bit ones.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: linux_file64.c,v 1.6 2001/11/13 02:08:52 lukem Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/file.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/filedesc.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/conf.h>
|
|
|
|
#include <sys/syscallargs.h>
|
|
|
|
#include <compat/linux/common/linux_types.h>
|
|
#include <compat/linux/common/linux_signal.h>
|
|
#include <compat/linux/common/linux_fcntl.h>
|
|
#include <compat/linux/common/linux_util.h>
|
|
#include <compat/linux/common/linux_machdep.h>
|
|
|
|
#include <compat/linux/linux_syscallargs.h>
|
|
|
|
static void bsd_to_linux_stat __P((struct stat *, struct linux_stat64 *));
|
|
static int linux_do_stat64 __P((struct proc *, void *, register_t *, int));
|
|
|
|
/*
|
|
* Convert a NetBSD stat structure to a Linux stat structure.
|
|
* Only the order of the fields and the padding in the structure
|
|
* is different. linux_fakedev is a machine-dependent function
|
|
* which optionally converts device driver major/minor numbers
|
|
* (XXX horrible, but what can you do against code that compares
|
|
* things against constant major device numbers? sigh)
|
|
*/
|
|
static void
|
|
bsd_to_linux_stat(bsp, lsp)
|
|
struct stat *bsp;
|
|
struct linux_stat64 *lsp;
|
|
{
|
|
lsp->lst_dev = bsp->st_dev;
|
|
lsp->lst_ino = bsp->st_ino;
|
|
lsp->lst_mode = (linux_mode_t)bsp->st_mode;
|
|
if (bsp->st_nlink >= (1 << 15))
|
|
lsp->lst_nlink = (1 << 15) - 1;
|
|
else
|
|
lsp->lst_nlink = (linux_nlink_t)bsp->st_nlink;
|
|
lsp->lst_uid = bsp->st_uid;
|
|
lsp->lst_gid = bsp->st_gid;
|
|
lsp->lst_rdev = linux_fakedev(bsp->st_rdev);
|
|
lsp->lst_size = bsp->st_size;
|
|
lsp->lst_blksize = bsp->st_blksize;
|
|
lsp->lst_blocks = bsp->st_blocks;
|
|
lsp->lst_atime = bsp->st_atime;
|
|
lsp->lst_mtime = bsp->st_mtime;
|
|
lsp->lst_ctime = bsp->st_ctime;
|
|
}
|
|
|
|
/*
|
|
* The stat functions below are plain sailing. stat and lstat are handled
|
|
* by one function to avoid code duplication.
|
|
*/
|
|
int
|
|
linux_sys_fstat64(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct linux_sys_fstat64_args /* {
|
|
syscallarg(int) fd;
|
|
syscallarg(struct linux_stat64 *) sp;
|
|
} */ *uap = v;
|
|
struct sys___fstat13_args fsa;
|
|
struct linux_stat64 tmplst;
|
|
struct stat *st,tmpst;
|
|
caddr_t sg;
|
|
int error;
|
|
|
|
sg = stackgap_init(p->p_emul);
|
|
|
|
st = stackgap_alloc(&sg, sizeof (struct stat));
|
|
|
|
SCARG(&fsa, fd) = SCARG(uap, fd);
|
|
SCARG(&fsa, sb) = st;
|
|
|
|
if ((error = sys___fstat13(p, &fsa, retval)))
|
|
return error;
|
|
|
|
if ((error = copyin(st, &tmpst, sizeof tmpst)))
|
|
return error;
|
|
|
|
bsd_to_linux_stat(&tmpst, &tmplst);
|
|
|
|
if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst)))
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
linux_do_stat64(p, v, retval, dolstat)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
int dolstat;
|
|
{
|
|
struct sys___stat13_args sa;
|
|
struct linux_stat64 tmplst;
|
|
struct stat *st, tmpst;
|
|
caddr_t sg;
|
|
int error;
|
|
struct linux_sys_stat64_args *uap = v;
|
|
|
|
sg = stackgap_init(p->p_emul);
|
|
st = stackgap_alloc(&sg, sizeof (struct stat));
|
|
CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
|
|
|
|
SCARG(&sa, ub) = st;
|
|
SCARG(&sa, path) = SCARG(uap, path);
|
|
|
|
if ((error = (dolstat ? sys___lstat13(p, &sa, retval) :
|
|
sys___stat13(p, &sa, retval))))
|
|
return error;
|
|
|
|
if ((error = copyin(st, &tmpst, sizeof tmpst)))
|
|
return error;
|
|
|
|
bsd_to_linux_stat(&tmpst, &tmplst);
|
|
|
|
if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst)))
|
|
return error;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
linux_sys_stat64(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct linux_sys_stat64_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(struct linux_stat64 *) sp;
|
|
} */ *uap = v;
|
|
|
|
return linux_do_stat64(p, uap, retval, 0);
|
|
}
|
|
|
|
int
|
|
linux_sys_lstat64(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct linux_sys_lstat64_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(struct linux_stat64 *) sp;
|
|
} */ *uap = v;
|
|
|
|
return linux_do_stat64(p, uap, retval, 1);
|
|
}
|
|
|
|
int
|
|
linux_sys_truncate64(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct linux_sys_truncate64_args /* {
|
|
syscallarg(const char *) path;
|
|
syscallarg(off_t) length;
|
|
} */ *uap = v;
|
|
caddr_t sg = stackgap_init(p->p_emul);
|
|
|
|
CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
|
|
|
|
return sys_truncate(p, uap, retval);
|
|
}
|
|
|
|
#ifdef __mips__ /* i386 and powerpc could use it too */
|
|
int
|
|
linux_sys_fcntl64(p, v, retval)
|
|
struct proc *p;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct linux_sys_fcntl64_args /* {
|
|
syscallarg(unsigned int) fd;
|
|
syscallarg(unsigned int) cmd;
|
|
syscallarg(unsigned long) arg;
|
|
} */ *uap = v;
|
|
unsigned int fd, cmd;
|
|
unsigned long arg;
|
|
int error;
|
|
|
|
fd = SCARG(uap, fd);
|
|
cmd = SCARG(uap, cmd);
|
|
arg = SCARG(uap, arg);
|
|
|
|
switch (cmd) {
|
|
/* XXX implement this later */
|
|
case LINUX_F_GETLK64:
|
|
error = 0;
|
|
break;
|
|
case LINUX_F_SETLK64:
|
|
error = 0;
|
|
break;
|
|
case LINUX_F_SETLKW64:
|
|
error = 0;
|
|
break;
|
|
default:
|
|
error = linux_sys_fcntl(p, v, retval);
|
|
break;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
#endif /* __mips__ */
|