NetBSD/usr.bin/fstat/ptyfs.c

102 lines
3.3 KiB
C

/* $NetBSD: ptyfs.c,v 1.2 2004/12/14 03:10:23 atatat Exp $ */
/*-
* Copyright (c) 2004 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.
* 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.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: ptyfs.c,v 1.2 2004/12/14 03:10:23 atatat Exp $");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#define _KERNEL
#include <miscfs/specfs/specdev.h>
#include <fs/ptyfs/ptyfs.h>
#undef _KERNEL
#include <paths.h>
#include <err.h>
#include <kvm.h>
#include <dirent.h>
#include "fstat.h"
int
ptyfs_filestat(struct vnode *vp, struct filestat *fsp)
{
struct ptyfsnode pn;
struct specinfo si;
struct mount mt;
if (!KVM_READ(VTOPTYFS(vp), &pn, sizeof(pn))) {
dprintf("can't read ptyfs_node at %p for pid %d",
VTOPTYFS(vp), Pid);
return 0;
}
if (!KVM_READ(vp->v_mount, &mt, sizeof(mt))) {
dprintf("can't read mount at %p for pid %d",
VTOPTYFS(vp), Pid);
return 0;
}
fsp->fsid = mt.mnt_stat.f_fsidx.__fsid_val[0];
fsp->fileid = (long)pn.ptyfs_fileno;
fsp->mode = pn.ptyfs_mode;
fsp->size = 0;
switch (pn.ptyfs_type) {
case PTYFSpts:
case PTYFSptc:
if (!KVM_READ(vp->v_specinfo, &si, sizeof(si))) {
dprintf("can't read specinfo at %p for pid %d",
VTOPTYFS(vp), Pid);
return 0;
}
fsp->rdev = si.si_rdev;
fsp->mode |= S_IFCHR;
break;
case PTYFSroot:
fsp->rdev = 0;
fsp->mode |= S_IFDIR;
break;
}
return 1;
}