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Support more filesystems in fstat(1): now you can use fstat(1) to

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find out if files on msdosfs and cd9660 filestores are open.
There was also a movement of some common things to a header, a
small cleanup.

PR:	bin/16364 bin/7043
Submitted by:	Peter Edwards <peter.edwards@openet-telecom.com>
This commit is contained in:
Brian Feldman 2000-03-16 02:02:34 +00:00
parent 17d75f8ecb
commit 06e88916ef
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=58125
5 changed files with 316 additions and 22 deletions
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1
usr.bin/fstat/Makefile
View file

@ -2,6 +2,7 @@
# $FreeBSD$
PROG= fstat
SRCS= cd9660.c fstat.c msdosfs.c
CFLAGS+=-Wall
CFLAGS+=-I${.CURDIR}/../../sys
DPADD= ${LIBKVM}

78
usr.bin/fstat/cd9660.c Normal file
View file

@ -0,0 +1,78 @@
/*
* Copyright (c) 2000 Peter Edwards
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by Peter Edwards
*
* 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 University of
* California, Berkeley and its contributors.
* 4. 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.
*
* $FreeBSD$
*/
/*
* XXX -
* This had to be separated from fstat.c because cd9660s has namespace
* conflicts with UFS.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <isofs/cd9660/cd9660_node.h>
#include <kvm.h>
#include <stdio.h>
#include "fstat.h"
int
isofs_filestat(vp, fsp)
struct vnode *vp;
struct filestat *fsp;
{
struct iso_node isonode;
if (!KVM_READ(VTOI(vp), &isonode, sizeof (isonode))) {
dprintf(stderr, "can't read iso_node at %p for pid %d\n",
(void *)VTOI(vp), Pid);
return 0;
}
fsp->fsid = dev2udev(isonode.i_dev) & 0xffff;
fsp->mode = (mode_t)isonode.inode.iso_mode;
fsp->rdev = isonode.i_dev;
fsp->fileid = (long)isonode.i_number;
fsp->size = (u_long)isonode.i_size;
return 1;
}

36
usr.bin/fstat/fstat.c
View file

@ -73,6 +73,7 @@ static const char rcsid[] =
#include <nfs/nfs.h>
#include <nfs/nfsnode.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
@ -93,27 +94,15 @@ static const char rcsid[] =
#include <unistd.h>
#include <netdb.h>
#include "fstat.h"
#define TEXT -1
#define CDIR -2
#define RDIR -3
#define TRACE -4
typedef struct devs {
struct devs *next;
long fsid;
ino_t ino;
char *name;
} DEVS;
DEVS *devs;
struct filestat {
long fsid;
long fileid;
mode_t mode;
u_long size;
dev_t rdev;
};
#ifdef notdef
struct nlist nl[] = {
{ "" },
@ -127,7 +116,6 @@ int checkfile; /* true if restricting to particular files or filesystems */
int nflg; /* (numerical) display f.s. and rdev as dev_t */
int vflg; /* display errors in locating kernel data objects etc... */
#define dprintf if (vflg) fprintf
struct file **ofiles; /* buffer of pointers to file structures */
int maxfiles;
@ -141,12 +129,6 @@ int maxfiles;
maxfiles = (d); \
}
/*
* a kvm_read that returns true if everything is read
*/
#define KVM_READ(kaddr, paddr, len) \
(kvm_read(kd, (u_long)(kaddr), (char *)(paddr), (len)) == (len))
kvm_t *kd;
void dofiles __P((struct kinfo_proc *kp));
@ -158,7 +140,6 @@ void pipetrans __P((struct pipe *pi, int i, int flag));
void socktrans __P((struct socket *sock, int i));
void getinetproto __P((int number));
int getfname __P((char *filename));
udev_t dev2udev __P((dev_t dev));
void usage __P((void));
@ -414,6 +395,17 @@ vtrans(vp, i, flag)
if (!nfs_filestat(&vn, &fst))
badtype = "error";
break;
case VT_MSDOSFS:
if (!msdosfs_filestat(&vn, &fst))
badtype = "error";
break;
case VT_ISOFS:
if (!isofs_filestat(&vn, &fst))
badtype = "error";
break;
default: {
static char unknown[10];
sprintf(badtype = unknown, "?(%x)", vn.v_tag);

73
usr.bin/fstat/fstat.h Normal file
View file

@ -0,0 +1,73 @@
/*-
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. 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.
*
* $FreeBSD$
*/
#ifndef __FSTAT_H__
#define __FSTAT_H__
/*
* a kvm_read that returns true if everything is read
*/
#define KVM_READ(kaddr, paddr, len) \
(kvm_read(kd, (u_long)(kaddr), (char *)(paddr), (len)) == (len))
#define dprintf if (vflg) fprintf
typedef struct devs {
struct devs *next;
long fsid;
ino_t ino;
char *name;
} DEVS;
struct filestat {
long fsid;
long fileid;
mode_t mode;
u_long size;
dev_t rdev;
};
/* Ugh */
extern kvm_t *kd;
extern int vflg;
extern int Pid;
udev_t dev2udev __P((dev_t dev));
/* Additional filesystem types */
int isofs_filestat __P((struct vnode *vp, struct filestat *fsp));
int msdosfs_filestat __P((struct vnode *vp, struct filestat *fsp));
#endif /* __FSTAT_H__ */

150
usr.bin/fstat/msdosfs.c Normal file
View file

@ -0,0 +1,150 @@
/*
* Copyright (c) 2000 Peter Edwards
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by Peter Edwards
*
* 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 University of
* California, Berkeley and its contributors.
* 4. 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#define _KERNEL
#include <sys/mount.h>
#include <msdosfs/bpb.h>
#include <msdosfs/msdosfsmount.h>
#undef _KERNEL
#include <msdosfs/denode.h>
#include <msdosfs/direntry.h>
#include <msdosfs/fat.h>
#include <err.h>
#include <kvm.h>
#include <stdio.h>
#include <stdlib.h>
/*
* XXX -
* VTODE is defined in denode.h only if _KERNEL is defined, but that leads to
* header explosion
*/
#define VTODE(vp) ((struct denode *)(vp)->v_data)
#include "fstat.h"
struct dosmount {
struct dosmount *next;
struct msdosfsmount *kptr; /* Pointer in kernel space */
struct msdosfsmount data; /* User space copy of structure */
};
int
msdosfs_filestat(vp, fsp)
struct vnode *vp;
struct filestat *fsp;
{
struct denode denode;
static struct dosmount *mounts;
struct dosmount *mnt;
u_long dirsperblk;
int fileid;
if (!KVM_READ(VTODE(vp), &denode, sizeof (denode))) {
dprintf(stderr, "can't read denode at %p for pid %d\n",
(void *)VTODE(vp), Pid);
return 0;
}
/*
* Find msdosfsmount structure for the vnode's filesystem. Needed
* for some filesystem parameters
*/
for (mnt = mounts; mnt; mnt = mnt->next)
if (mnt->kptr == denode.de_pmp)
break;
if (!mnt) {
if ((mnt = malloc(sizeof(struct dosmount))) == NULL)
err(1, NULL);
mnt->next = mounts;
mounts = mnt;
mnt->kptr = denode.de_pmp;
if (!KVM_READ(denode.de_pmp, &mnt->data, sizeof mnt->data)) {
dprintf(stderr,
"can't read mount info at %p for pid %d\n",
(void *)denode.de_pmp, Pid);
return 0;
}
}
fsp->fsid = dev2udev(denode.de_dev) & 0xffff;
fsp->mode = 0555;
fsp->mode |= denode.de_Attributes & ATTR_READONLY ? 0 : 0222;
fsp->mode &= mnt->data.pm_mask;
/* Distinguish directories and files. No "special" files in FAT. */
fsp->mode |= denode.de_Attributes & ATTR_DIRECTORY ? S_IFDIR : S_IFREG;
fsp->size = denode.de_FileSize;
fsp->rdev = denode.de_dev;
/*
* XXX -
* Culled from msdosfs_vnops.c. There appears to be a problem
* here, in that a directory has the same inode number as the first
* file in the directory. stat(2) suffers from this problem also, so
* I won't try to fix it here.
*
* The following computation of the fileid must be the same as that
* used in msdosfs_readdir() to compute d_fileno. If not, pwd
* doesn't work.
*/
dirsperblk = mnt->data.pm_BytesPerSec / sizeof(struct direntry);
if (denode.de_Attributes & ATTR_DIRECTORY) {
fileid = cntobn(&mnt->data, denode.de_StartCluster)
* dirsperblk;
if (denode.de_StartCluster == MSDOSFSROOT)
fileid = 1;
} else {
fileid = cntobn(&mnt->data, denode.de_dirclust) * dirsperblk;
if (denode.de_dirclust == MSDOSFSROOT)
fileid = roottobn(&mnt->data, 0) * dirsperblk;
fileid += denode.de_diroffset / sizeof(struct direntry);
}
fsp->fileid = fileid;
return 1;
}