/*      $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);
}

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.