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/* $NetBSD: vfs_syscalls_50.c,v 1.26 2021/08/15 07:57:46 christos Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls_50.c,v 1.26 2021/08/15 07:57:46 christos Exp $");
#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#include "opt_quota.h"
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/socketvar.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/dirent.h>
#include <sys/kauth.h>
#include <sys/time.h>
#include <sys/syscall.h>
#include <sys/syscallvar.h>
#include <sys/syscallargs.h>
#include <sys/vfs_syscalls.h>
#ifndef LFS
#define LFS
#endif
#include <sys/syscallargs.h>
#include <ufs/lfs/lfs_extern.h>
#include <compat/common/compat_util.h>
#include <compat/common/compat_mod.h>
#include <compat/sys/time.h>
#include <compat/sys/stat.h>
#include <compat/sys/dirent.h>
#include <compat/sys/mount.h>
static const struct syscall_package vfs_syscalls_50_syscalls[] = {
{ SYS_compat_50___stat30, 0, (sy_call_t *)compat_50_sys___stat30 },
{ SYS_compat_50___fstat30, 0, (sy_call_t *)compat_50_sys___fstat30 },
{ SYS_compat_50___lstat30, 0, (sy_call_t *)compat_50_sys___lstat30 },
{ SYS_compat_50___fhstat40, 0, (sy_call_t *)compat_50_sys___fhstat40 },
{ SYS_compat_50_utimes, 0, (sy_call_t *)compat_50_sys_utimes },
{ SYS_compat_50_lfs_segwait, 0,
(sy_call_t *)compat_50_sys_lfs_segwait } ,
{ SYS_compat_50_futimes, 0, (sy_call_t *)compat_50_sys_futimes },
{ SYS_compat_50_lutimes, 0, (sy_call_t *)compat_50_sys_lutimes },
{ SYS_compat_50_mknod, 0, (sy_call_t *)compat_50_sys_mknod },
{ 0, 0, NULL }
};
/*
* Convert from a new to an old stat structure.
*/
static void
cvtstat(struct stat30 *ost, const struct stat *st)
{
/* Handle any padding. */
memset(ost, 0, sizeof(*ost));
ost->st_dev = st->st_dev;
ost->st_ino = st->st_ino;
ost->st_mode = st->st_mode;
ost->st_nlink = st->st_nlink;
ost->st_uid = st->st_uid;
ost->st_gid = st->st_gid;
ost->st_rdev = st->st_rdev;
timespec_to_timespec50(&st->st_atimespec, &ost->st_atimespec);
timespec_to_timespec50(&st->st_mtimespec, &ost->st_mtimespec);
timespec_to_timespec50(&st->st_ctimespec, &ost->st_ctimespec);
timespec_to_timespec50(&st->st_birthtimespec, &ost->st_birthtimespec);
ost->st_size = st->st_size;
ost->st_blocks = st->st_blocks;
ost->st_blksize = st->st_blksize;
ost->st_flags = st->st_flags;
ost->st_gen = st->st_gen;
memset(ost->st_spare, 0, sizeof(ost->st_spare));
}
/*
* Get file status; this version follows links.
*/
/* ARGSUSED */
int
compat_50_sys___stat30(struct lwp *l, const struct compat_50_sys___stat30_args *uap, register_t *retval)
{
/* {
syscallarg(const char *) path;
syscallarg(struct stat30 *) ub;
} */
struct stat sb;
struct stat30 osb;
int error;
error = do_sys_stat(SCARG(uap, path), FOLLOW, &sb);
if (error)
return error;
cvtstat(&osb, &sb);
return copyout(&osb, SCARG(uap, ub), sizeof(osb));
}
/*
* Get file status; this version does not follow links.
*/
/* ARGSUSED */
int
compat_50_sys___lstat30(struct lwp *l, const struct compat_50_sys___lstat30_args *uap, register_t *retval)
{
/* {
syscallarg(const char *) path;
syscallarg(struct stat30 *) ub;
} */
struct stat sb;
struct stat30 osb;
int error;
error = do_sys_stat(SCARG(uap, path), NOFOLLOW, &sb);
if (error)
return error;
cvtstat(&osb, &sb);
return copyout(&osb, SCARG(uap, ub), sizeof(osb));
}
/*
* Return status information about a file descriptor.
*/
/* ARGSUSED */
int
compat_50_sys___fstat30(struct lwp *l, const struct compat_50_sys___fstat30_args *uap, register_t *retval)
{
/* {
syscallarg(int) fd;
syscallarg(struct stat30 *) sb;
} */
struct stat sb;
struct stat30 osb;
int error;
error = do_sys_fstat(SCARG(uap, fd), &sb);
if (error)
return error;
cvtstat(&osb, &sb);
return copyout(&osb, SCARG(uap, sb), sizeof(osb));
}
/* ARGSUSED */
int
compat_50_sys___fhstat40(struct lwp *l, const struct compat_50_sys___fhstat40_args *uap, register_t *retval)
{
/* {
syscallarg(const void *) fhp;
syscallarg(size_t) fh_size;
syscallarg(struct stat30 *) sb;
} */
struct stat sb;
struct stat30 osb;
int error;
error = do_fhstat(l, SCARG(uap, fhp), SCARG(uap, fh_size), &sb);
if (error)
return error;
cvtstat(&osb, &sb);
return copyout(&osb, SCARG(uap, sb), sizeof(osb));
}
static int
compat_50_do_sys_utimes(struct lwp *l, struct vnode *vp, const char *path,
int flag, const struct timeval50 *tptr)
{
struct timeval tv[2], *tvp;
struct timeval50 tv50[2];
if (tptr) {
int error = copyin(tptr, tv50, sizeof(tv50));
if (error)
return error;
timeval50_to_timeval(&tv50[0], &tv[0]);
timeval50_to_timeval(&tv50[1], &tv[1]);
tvp = tv;
} else
tvp = NULL;
return do_sys_utimes(l, vp, path, flag, tvp, UIO_SYSSPACE);
}
/*
* Set the access and modification times given a path name; this
* version follows links.
*/
/* ARGSUSED */
int
compat_50_sys_utimes(struct lwp *l, const struct compat_50_sys_utimes_args *uap,
register_t *retval)
{
/* {
syscallarg(const char *) path;
syscallarg(const struct timeval50 *) tptr;
} */
return compat_50_do_sys_utimes(l, NULL, SCARG(uap, path), FOLLOW,
SCARG(uap, tptr));
}
/*
* Set the access and modification times given a file descriptor.
*/
/* ARGSUSED */
int
compat_50_sys_futimes(struct lwp *l,
const struct compat_50_sys_futimes_args *uap, register_t *retval)
{
/* {
syscallarg(int) fd;
syscallarg(const struct timeval50 *) tptr;
} */
int error;
struct file *fp;
/* fd_getvnode() will use the descriptor for us */
if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0)
return error;
error = compat_50_do_sys_utimes(l, fp->f_vnode, NULL, 0,
SCARG(uap, tptr));
fd_putfile(SCARG(uap, fd));
return error;
}
/*
* Set the access and modification times given a path name; this
* version does not follow links.
*/
int
compat_50_sys_lutimes(struct lwp *l,
const struct compat_50_sys_lutimes_args *uap, register_t *retval)
{
/* {
syscallarg(const char *) path;
syscallarg(const struct timeval50 *) tptr;
} */
return compat_50_do_sys_utimes(l, NULL, SCARG(uap, path), NOFOLLOW,
SCARG(uap, tptr));
}
int
compat_50_sys_lfs_segwait(struct lwp *l,
const struct compat_50_sys_lfs_segwait_args *uap, register_t *retval)
{
/* {
syscallarg(fsid_t *) fsidp;
syscallarg(struct timeval50 *) tv;
} */
#ifdef notyet
/* XXX need to check presence of LFS at run-time XXX */
struct timeval atv;
struct timeval50 atv50;
fsid_t fsid;
int error;
/* XXX need we be su to segwait? */
error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_LFS,
KAUTH_REQ_SYSTEM_LFS_SEGWAIT, NULL, NULL, NULL);
if (error)
return (error);
if ((error = copyin(SCARG(uap, fsidp), &fsid, sizeof(fsid_t))) != 0)
return (error);
if (SCARG(uap, tv)) {
error = copyin(SCARG(uap, tv), &atv50, sizeof(atv50));
if (error)
return (error);
timeval50_to_timeval(&atv50, &atv);
if (itimerfix(&atv))
return (EINVAL);
} else /* NULL or invalid */
atv.tv_sec = atv.tv_usec = 0;
return lfs_segwait(&fsid, &atv);
#else
return ENOSYS;
#endif
}
int
compat_50_sys_mknod(struct lwp *l,
const struct compat_50_sys_mknod_args *uap, register_t *retval)
{
/* {
syscallarg(const char *) path;
syscallarg(mode_t) mode;
syscallarg(uint32_t) dev;
} */
return do_sys_mknod(l, SCARG(uap, path), SCARG(uap, mode),
SCARG(uap, dev), UIO_USERSPACE);
}
int
vfs_syscalls_50_init(void)
{
return syscall_establish(NULL, vfs_syscalls_50_syscalls);
}
int
vfs_syscalls_50_fini(void)
{
return syscall_disestablish(NULL, vfs_syscalls_50_syscalls);
}
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