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Add handrolled stat30 compat syscalls for calling post-time_t rump

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kernels from pre-time_t userlands.
This commit is contained in:
pooka 2009-05-22 08:59:32 +00:00
parent ac42a021b0
commit 659f41e70a
3 changed files with 99 additions and 3 deletions
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8
sys/rump/include/rump/rump.h
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@ -1,4 +1,4 @@
/* $NetBSD: rump.h,v 1.19 2009/05/22 08:34:14 pooka Exp $ */
/* $NetBSD: rump.h,v 1.20 2009/05/22 08:59:32 pooka Exp $ */
/*
* Copyright (c) 2007 Antti Kantee. All Rights Reserved.
@ -156,6 +156,12 @@ int rump_sysproxy_set(rump_sysproxy_t, void *);
int rump_sysproxy_socket_setup_client(int);
int rump_sysproxy_socket_setup_server(int);
/*
* compat syscalls. these are currently hand-"generated"
*/
int rump_sys___stat30(const char *, struct stat *);
int rump_sys___lstat30(const char *, struct stat *);
/*
* Begin rump syscall conditionals. Yes, something a little better
* is required here.

8
sys/rump/librump/rumpvfs/Makefile.rumpvfs
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@ -1,4 +1,4 @@
# $NetBSD: Makefile.rumpvfs,v 1.6 2009/03/19 09:14:37 pooka Exp $
# $NetBSD: Makefile.rumpvfs,v 1.7 2009/05/22 08:59:32 pooka Exp $
#
.include "${RUMPTOP}/Makefile.rump"
@ -8,7 +8,8 @@ LIB= rumpvfs
.PATH: ${RUMPTOP}/librump/rumpvfs \
${RUMPTOP}/../kern ${RUMPTOP}/../lib/libkern \
${RUMPTOP}/../miscfs/genfs ${RUMPTOP}/../miscfs/syncfs \
${RUMPTOP}/../miscfs/specfs
${RUMPTOP}/../miscfs/specfs \
${RUMPTOP}/../compat/common
#
# Source modules, first the ones specifically implemented for librump.
@ -32,6 +33,9 @@ SRCS+= genfs_vfsops.c genfs_vnops.c spec_vnops.c
SRCS+= subr_bufq.c bufq_disksort.c bufq_fcfs.c bufq_priocscan.c \
bufq_readprio.c
# compat syscalls
SRCS+= vfs_syscalls_50.c compat.c
SRCS+= rumpvnode_if.c
# no shlib_version because this is automatically in sync with lib/librump

86
sys/rump/librump/rumpvfs/compat.c Normal file
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@ -0,0 +1,86 @@
/* $NetBSD: compat.c,v 1.1 2009/05/22 08:59:32 pooka Exp $ */
/*
* Copyright (c) 2009 Antti Kantee. All Rights Reserved.
*
* Development of this software was supported by the Nokia Foundation
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: compat.c,v 1.1 2009/05/22 08:59:32 pooka Exp $");
#include <sys/param.h>
#include <sys/syscallargs.h>
#include <rump/rump.h>
#include <rump/rumpuser.h>
/*
* XXX: these are handwritten for now. They provide compat for
* calling post-time_t file systems from a pre-time_t userland.
* (mknod is missing. I don't care very much)
*
* Doing remote system calls with these does not (obviously) work.
*/
#if BYTE_ORDER == BIG_ENDIAN
#define SPARG(p,k) ((p)->k.be.datum)
#else /* LITTLE_ENDIAN, I hope dearly */
#define SPARG(p,k) ((p)->k.le.datum)
#endif
int
rump_sys___stat30(const char *path, struct stat *sb)
{
struct compat_50_sys___stat30_args args;
register_t retval = 0;
int error = 0;
SPARG(&args, path) = path;
SPARG(&args, ub) = (struct stat30 *)sb;
error = compat_50_sys___stat30(curlwp, &args, &retval);
if (error) {
retval = -1;
rumpuser_seterrno(error);
}
return retval;
}
int
rump_sys___lstat30(const char *path, struct stat *sb)
{
struct compat_50_sys___lstat30_args args;
register_t retval = 0;
int error = 0;
SPARG(&args, path) = path;
SPARG(&args, ub) = (struct stat30 *)sb;
error = compat_50_sys___lstat30(curlwp, &args, &retval);
if (error) {
retval = -1;
rumpuser_seterrno(error);
}
return retval;
}