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/* $OpenBSD: vfs_syscalls_35.c,v 1.3 2004/07/14 18:57:57 millert Exp $ */
/*
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
* @(#)vfs_syscalls.c 8.28 (Berkeley) 12/10/94
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/vnode.h>
#include <sys/namei.h>
#include <sys/dirent.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
static void cvtstat(struct stat *, struct stat35 *);
/*
* Convert from a new to an old stat structure.
*/
static void
cvtstat(struct stat *st, struct stat35 *ost)
{
ost->st_dev = st->st_dev;
ost->st_ino = st->st_ino;
ost->st_mode = st->st_mode & 0xffff;
ost->st_nlink = st->st_nlink & 0xffff;
ost->st_uid = st->st_uid;
ost->st_gid = st->st_gid;
ost->st_rdev = st->st_rdev;
ost->st_atimespec = st->st_atimespec;
ost->st_mtimespec = st->st_mtimespec;
ost->st_ctimespec = st->st_ctimespec;
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;
}
/*
* Get file status; this version follows links.
*/
/* ARGSUSED */
int
compat_35_sys_stat(struct proc *p, void *v, register_t *retval)
{
struct compat_35_sys_stat_args /* {
syscallarg(char *) path;
syscallarg(struct stat35 *) ub;
} */ *uap = v;
struct stat sb;
struct stat35 osb;
int error;
struct nameidata nd;
NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
if ((error = namei(&nd)) != 0)
return (error);
error = vn_stat(nd.ni_vp, &sb, p);
vput(nd.ni_vp);
if (error)
return (error);
/* Don't let non-root see generation numbers (for NFS security) */
if (suser(p, 0))
sb.st_gen = 0;
cvtstat(&sb, &osb);
error = copyout(&osb, SCARG(uap, ub), sizeof(osb));
return (error);
}
/*
* Get file status; this version does not follow links.
*/
/* ARGSUSED */
int
compat_35_sys_lstat(struct proc *p, void *v, register_t *retval)
{
struct compat_35_sys_lstat_args /* {
syscallarg(char *) path;
syscallarg(struct stat35 *) ub;
} */ *uap = v;
struct stat sb;
struct stat35 osb;
int error;
struct nameidata nd;
NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF, UIO_USERSPACE,
SCARG(uap, path), p);
if ((error = namei(&nd)) != 0)
return (error);
error = vn_stat(nd.ni_vp, &sb, p);
vput(nd.ni_vp);
if (error)
return (error);
/* Don't let non-root see generation numbers (for NFS security) */
if (suser(p, 0))
sb.st_gen = 0;
cvtstat(&sb, &osb);
error = copyout(&osb, SCARG(uap, ub), sizeof(osb));
return (error);
}
/*
* Return status information about a file descriptor.
*/
/* ARGSUSED */
int
compat_35_sys_fstat(struct proc *p, void *v, register_t *retval)
{
struct compat_35_sys_fstat_args /* {
syscallarg(int) fd;
syscallarg(struct stat35 *) sb;
} */ *uap = v;
int fd = SCARG(uap, fd);
struct filedesc *fdp = p->p_fd;
struct file *fp;
struct stat ub;
struct stat35 oub;
int error;
if ((fp = fd_getfile(fdp, fd)) == NULL)
return (EBADF);
FREF(fp);
error = (*fp->f_ops->fo_stat)(fp, &ub, p);
FRELE(fp);
if (error == 0) {
/* Don't let non-root see generation numbers
(for NFS security) */
if (suser(p, 0))
ub.st_gen = 0;
cvtstat(&ub, &oub);
error = copyout(&oub, SCARG(uap, sb), sizeof(oub));
}
return (error);
}
/* ARGSUSED */
int
compat_35_sys_fhstat(struct proc *p, void *v, register_t *retval)
{
struct sys_fhstat_args /* {
syscallarg(const fhandle_t *) fhp;
syscallarg(struct stat35 *) sb;
} */ *uap = v;
struct stat ub;
struct stat35 oub;
int error;
fhandle_t fh;
struct mount *mp;
struct vnode *vp;
/*
* Must be super user
*/
if ((error = suser(p, 0)))
return (error);
if ((error = copyin(SCARG(uap, fhp), &fh, sizeof(fhandle_t))) != 0)
return (error);
if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL)
return (ESTALE);
if ((error = VFS_FHTOVP(mp, &fh.fh_fid, &vp)))
return (error);
error = vn_stat(vp, &ub, p);
vput(vp);
if (error)
return (error);
cvtstat(&ub, &oub);
error = copyout(&oub, SCARG(uap, sb), sizeof(oub));
return (error);
}
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