754 lines
17 KiB
C
754 lines
17 KiB
C
/*-
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1988, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)fstat.c 8.1 (Berkeley) 6/6/93";*/
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static char *rcsid = "$Id: fstat.c,v 1.13 1995/02/15 02:10:41 mycroft Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/stat.h>
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#include <sys/vnode.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/domain.h>
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#include <sys/protosw.h>
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#include <sys/unpcb.h>
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#include <sys/sysctl.h>
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#include <sys/filedesc.h>
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#define KERNEL
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#include <sys/file.h>
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#include <ufs/ufs/quota.h>
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#include <ufs/ufs/inode.h>
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#undef KERNEL
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#define NFS
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#include <sys/mount.h>
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#include <nfs/nfsv2.h>
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#include <nfs/rpcv2.h>
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#include <nfs/nfs.h>
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#include <nfs/nfsnode.h>
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#undef NFS
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <ctype.h>
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#include <errno.h>
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#include <kvm.h>
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#include <nlist.h>
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#include <paths.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define TEXT -1
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#define CDIR -2
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#define RDIR -3
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#define TRACE -4
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typedef struct devs {
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struct devs *next;
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long fsid;
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ino_t ino;
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char *name;
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} DEVS;
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DEVS *devs;
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struct filestat {
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long fsid;
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long fileid;
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mode_t mode;
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u_long size;
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dev_t rdev;
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};
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#ifdef notdef
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struct nlist nl[] = {
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{ "" },
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};
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#endif
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int fsflg, /* show files on same filesystem as file(s) argument */
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pflg, /* show files open by a particular pid */
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uflg; /* show files open by a particular (effective) user */
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int checkfile; /* true if restricting to particular files or filesystems */
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int nflg; /* (numerical) display f.s. and rdev as dev_t */
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int vflg; /* display errors in locating kernel data objects etc... */
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#define dprintf if (vflg) fprintf
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struct file **ofiles; /* buffer of pointers to file structures */
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int maxfiles;
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#define ALLOC_OFILES(d) \
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if ((d) > maxfiles) { \
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free(ofiles); \
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ofiles = malloc((d) * sizeof(struct file *)); \
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if (ofiles == NULL) { \
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fprintf(stderr, "fstat: %s\n", strerror(errno)); \
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exit(1); \
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} \
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maxfiles = (d); \
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}
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/*
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* a kvm_read that returns true if everything is read
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*/
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#define KVM_READ(kaddr, paddr, len) \
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(kvm_read(kd, (u_long)(kaddr), (char *)(paddr), (len)) == (len))
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kvm_t *kd;
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int ufs_filestat(), nfs_filestat();
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void dofiles(), getinetproto(), socktrans();
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void usage(), vtrans();
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main(argc, argv)
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int argc;
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char **argv;
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{
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extern char *optarg;
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extern int optind;
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register struct passwd *passwd;
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struct kinfo_proc *p, *plast;
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int arg, ch, what;
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char *memf, *nlistf;
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int cnt;
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arg = 0;
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what = KERN_PROC_ALL;
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nlistf = memf = NULL;
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while ((ch = getopt(argc, argv, "fnp:u:vNM")) != EOF)
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switch((char)ch) {
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case 'f':
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fsflg = 1;
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break;
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case 'M':
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memf = optarg;
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break;
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case 'N':
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nlistf = optarg;
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break;
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case 'n':
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nflg = 1;
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break;
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case 'p':
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if (pflg++)
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usage();
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if (!isdigit(*optarg)) {
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fprintf(stderr,
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"fstat: -p requires a process id\n");
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usage();
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}
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what = KERN_PROC_PID;
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arg = atoi(optarg);
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break;
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case 'u':
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if (uflg++)
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usage();
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if (!(passwd = getpwnam(optarg))) {
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fprintf(stderr, "%s: unknown uid\n",
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optarg);
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exit(1);
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}
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what = KERN_PROC_UID;
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arg = passwd->pw_uid;
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break;
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case 'v':
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vflg = 1;
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break;
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case '?':
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default:
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usage();
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}
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if (*(argv += optind)) {
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for (; *argv; ++argv) {
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if (getfname(*argv))
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checkfile = 1;
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}
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if (!checkfile) /* file(s) specified, but none accessable */
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exit(1);
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}
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ALLOC_OFILES(256); /* reserve space for file pointers */
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if (fsflg && !checkfile) {
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/* -f with no files means use wd */
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if (getfname(".") == 0)
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exit(1);
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checkfile = 1;
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}
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/*
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* Discard setgid privileges if not the running kernel so that bad
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* guys can't print interesting stuff from kernel memory.
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*/
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if (nlistf != NULL || memf != NULL)
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setgid(getgid());
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if ((kd = kvm_open(nlistf, memf, NULL, O_RDONLY, NULL)) == NULL) {
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fprintf(stderr, "fstat: %s\n", kvm_geterr(kd));
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exit(1);
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}
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#ifdef notdef
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if (kvm_nlist(kd, nl) != 0) {
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fprintf(stderr, "fstat: no namelist: %s\n", kvm_geterr(kd));
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exit(1);
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}
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#endif
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if ((p = kvm_getprocs(kd, what, arg, &cnt)) == NULL) {
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fprintf(stderr, "fstat: %s\n", kvm_geterr(kd));
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exit(1);
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}
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if (nflg)
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printf("%s",
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"USER CMD PID FD DEV INUM MODE SZ|DV R/W");
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else
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printf("%s",
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"USER CMD PID FD MOUNT INUM MODE SZ|DV R/W");
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if (checkfile && fsflg == 0)
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printf(" NAME\n");
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else
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putchar('\n');
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for (plast = &p[cnt]; p < plast; ++p) {
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if (p->kp_proc.p_stat == SZOMB)
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continue;
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dofiles(p);
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}
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exit(0);
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}
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char *Uname, *Comm;
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int Pid;
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#define PREFIX(i) printf("%-8.8s %-10s %5d", Uname, Comm, Pid); \
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switch(i) { \
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case TEXT: \
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printf(" text"); \
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break; \
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case CDIR: \
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printf(" wd"); \
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break; \
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case RDIR: \
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printf(" root"); \
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break; \
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case TRACE: \
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printf(" tr"); \
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break; \
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default: \
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printf(" %4d", i); \
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break; \
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}
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/*
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* print open files attributed to this process
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*/
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void
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dofiles(kp)
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struct kinfo_proc *kp;
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{
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int i, last;
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struct file file;
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struct filedesc0 filed0;
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#define filed filed0.fd_fd
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struct proc *p = &kp->kp_proc;
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struct eproc *ep = &kp->kp_eproc;
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extern char *user_from_uid();
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Uname = user_from_uid(ep->e_ucred.cr_uid, 0);
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Pid = p->p_pid;
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Comm = p->p_comm;
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if (p->p_fd == NULL)
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return;
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if (!KVM_READ(p->p_fd, &filed0, sizeof (filed0))) {
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dprintf(stderr, "can't read filedesc at %x for pid %d\n",
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p->p_fd, Pid);
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return;
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}
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if (filed.fd_nfiles < 0 || filed.fd_lastfile >= filed.fd_nfiles ||
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filed.fd_freefile > filed.fd_lastfile + 1) {
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dprintf(stderr, "filedesc corrupted at %x for pid %d\n",
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p->p_fd, Pid);
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return;
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}
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/*
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* root directory vnode, if one
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*/
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if (filed.fd_rdir)
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vtrans(filed.fd_rdir, RDIR, FREAD);
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/*
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* current working directory vnode
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*/
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vtrans(filed.fd_cdir, CDIR, FREAD);
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/*
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* ktrace vnode, if one
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*/
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if (p->p_tracep)
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vtrans(p->p_tracep, TRACE, FREAD|FWRITE);
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/*
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* open files
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*/
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#define FPSIZE (sizeof (struct file *))
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ALLOC_OFILES(filed.fd_lastfile+1);
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if (filed.fd_nfiles > NDFILE) {
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if (!KVM_READ(filed.fd_ofiles, ofiles,
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(filed.fd_lastfile+1) * FPSIZE)) {
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dprintf(stderr,
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"can't read file structures at %x for pid %d\n",
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filed.fd_ofiles, Pid);
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return;
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}
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} else
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bcopy(filed0.fd_dfiles, ofiles, (filed.fd_lastfile+1) * FPSIZE);
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for (i = 0; i <= filed.fd_lastfile; i++) {
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if (ofiles[i] == NULL)
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continue;
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if (!KVM_READ(ofiles[i], &file, sizeof (struct file))) {
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dprintf(stderr, "can't read file %d at %x for pid %d\n",
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i, ofiles[i], Pid);
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continue;
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}
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if (file.f_type == DTYPE_VNODE)
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vtrans((struct vnode *)file.f_data, i, file.f_flag);
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else if (file.f_type == DTYPE_SOCKET) {
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if (checkfile == 0)
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socktrans((struct socket *)file.f_data, i);
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}
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else {
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dprintf(stderr,
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"unknown file type %d for file %d of pid %d\n",
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file.f_type, i, Pid);
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}
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}
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}
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void
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vtrans(vp, i, flag)
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struct vnode *vp;
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int i;
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int flag;
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{
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struct vnode vn;
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struct filestat fst;
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char rw[3], mode[15];
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char *badtype = NULL, *filename, *getmnton();
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filename = badtype = NULL;
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if (!KVM_READ(vp, &vn, sizeof (struct vnode))) {
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dprintf(stderr, "can't read vnode at %x for pid %d\n",
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vp, Pid);
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return;
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}
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if (vn.v_type == VNON || vn.v_tag == VT_NON)
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badtype = "none";
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else if (vn.v_type == VBAD)
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badtype = "bad";
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else
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switch (vn.v_tag) {
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case VT_UFS:
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if (!ufs_filestat(&vn, &fst))
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badtype = "error";
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break;
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case VT_MFS:
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if (!ufs_filestat(&vn, &fst))
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badtype = "error";
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break;
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case VT_NFS:
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if (!nfs_filestat(&vn, &fst))
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badtype = "error";
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break;
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default: {
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static char unknown[10];
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sprintf(badtype = unknown, "?(%x)", vn.v_tag);
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break;;
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}
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}
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if (checkfile) {
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int fsmatch = 0;
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register DEVS *d;
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if (badtype)
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return;
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for (d = devs; d != NULL; d = d->next)
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if (d->fsid == fst.fsid) {
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fsmatch = 1;
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if (d->ino == fst.fileid) {
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filename = d->name;
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break;
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}
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}
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if (fsmatch == 0 || (filename == NULL && fsflg == 0))
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return;
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}
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PREFIX(i);
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if (badtype) {
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(void)printf(" - - %10s -\n", badtype);
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return;
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}
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if (nflg)
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(void)printf(" %2d,%-2d", major(fst.fsid), minor(fst.fsid));
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else
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(void)printf(" %-8s", getmnton(vn.v_mount));
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if (nflg)
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(void)sprintf(mode, "%o", fst.mode);
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else
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strmode(fst.mode, mode);
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(void)printf(" %6d %10s", fst.fileid, mode);
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switch (vn.v_type) {
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case VBLK:
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case VCHR: {
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char *name;
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if (nflg || ((name = devname(fst.rdev, vn.v_type == VCHR ?
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S_IFCHR : S_IFBLK)) == NULL))
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printf(" %2d,%-2d", major(fst.rdev), minor(fst.rdev));
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else
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printf(" %6s", name);
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break;
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}
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default:
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printf(" %6d", fst.size);
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}
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rw[0] = '\0';
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if (flag & FREAD)
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strcat(rw, "r");
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if (flag & FWRITE)
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strcat(rw, "w");
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printf(" %2s", rw);
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if (filename && !fsflg)
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printf(" %s", filename);
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putchar('\n');
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}
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int
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ufs_filestat(vp, fsp)
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struct vnode *vp;
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struct filestat *fsp;
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{
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struct inode inode;
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if (!KVM_READ(VTOI(vp), &inode, sizeof (inode))) {
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dprintf(stderr, "can't read inode at %x for pid %d\n",
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VTOI(vp), Pid);
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return 0;
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}
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fsp->fsid = inode.i_dev & 0xffff;
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fsp->fileid = (long)inode.i_number;
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fsp->mode = (mode_t)inode.i_mode;
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fsp->size = (u_long)inode.i_size;
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fsp->rdev = inode.i_rdev;
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return 1;
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}
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int
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nfs_filestat(vp, fsp)
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struct vnode *vp;
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struct filestat *fsp;
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{
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struct nfsnode nfsnode;
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register mode_t mode;
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if (!KVM_READ(VTONFS(vp), &nfsnode, sizeof (nfsnode))) {
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dprintf(stderr, "can't read nfsnode at %x for pid %d\n",
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VTONFS(vp), Pid);
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return 0;
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}
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fsp->fsid = nfsnode.n_vattr.va_fsid;
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fsp->fileid = nfsnode.n_vattr.va_fileid;
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fsp->size = nfsnode.n_size;
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fsp->rdev = nfsnode.n_vattr.va_rdev;
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mode = (mode_t)nfsnode.n_vattr.va_mode;
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switch (vp->v_type) {
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case VREG:
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mode |= S_IFREG;
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break;
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case VDIR:
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mode |= S_IFDIR;
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break;
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case VBLK:
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mode |= S_IFBLK;
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break;
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case VCHR:
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mode |= S_IFCHR;
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break;
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case VLNK:
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mode |= S_IFLNK;
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break;
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case VSOCK:
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mode |= S_IFSOCK;
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break;
|
|
case VFIFO:
|
|
mode |= S_IFIFO;
|
|
break;
|
|
};
|
|
fsp->mode = mode;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
char *
|
|
getmnton(m)
|
|
struct mount *m;
|
|
{
|
|
static struct mount mount;
|
|
static struct mtab {
|
|
struct mtab *next;
|
|
struct mount *m;
|
|
char mntonname[MNAMELEN];
|
|
} *mhead = NULL;
|
|
register struct mtab *mt;
|
|
|
|
for (mt = mhead; mt != NULL; mt = mt->next)
|
|
if (m == mt->m)
|
|
return (mt->mntonname);
|
|
if (!KVM_READ(m, &mount, sizeof(struct mount))) {
|
|
fprintf(stderr, "can't read mount table at %x\n", m);
|
|
return (NULL);
|
|
}
|
|
if ((mt = malloc(sizeof (struct mtab))) == NULL) {
|
|
fprintf(stderr, "fstat: %s\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
mt->m = m;
|
|
bcopy(&mount.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
|
|
mt->next = mhead;
|
|
mhead = mt;
|
|
return (mt->mntonname);
|
|
}
|
|
|
|
void
|
|
socktrans(sock, i)
|
|
struct socket *sock;
|
|
int i;
|
|
{
|
|
static char *stypename[] = {
|
|
"unused", /* 0 */
|
|
"stream", /* 1 */
|
|
"dgram", /* 2 */
|
|
"raw", /* 3 */
|
|
"rdm", /* 4 */
|
|
"seqpak" /* 5 */
|
|
};
|
|
#define STYPEMAX 5
|
|
struct socket so;
|
|
struct protosw proto;
|
|
struct domain dom;
|
|
struct inpcb inpcb;
|
|
struct unpcb unpcb;
|
|
int len;
|
|
char dname[32], *strcpy();
|
|
|
|
PREFIX(i);
|
|
|
|
/* fill in socket */
|
|
if (!KVM_READ(sock, &so, sizeof(struct socket))) {
|
|
dprintf(stderr, "can't read sock at %x\n", sock);
|
|
goto bad;
|
|
}
|
|
|
|
/* fill in protosw entry */
|
|
if (!KVM_READ(so.so_proto, &proto, sizeof(struct protosw))) {
|
|
dprintf(stderr, "can't read protosw at %x", so.so_proto);
|
|
goto bad;
|
|
}
|
|
|
|
/* fill in domain */
|
|
if (!KVM_READ(proto.pr_domain, &dom, sizeof(struct domain))) {
|
|
dprintf(stderr, "can't read domain at %x\n", proto.pr_domain);
|
|
goto bad;
|
|
}
|
|
|
|
if ((len = kvm_read(kd, (u_long)dom.dom_name, dname,
|
|
sizeof(dname) - 1)) < 0) {
|
|
dprintf(stderr, "can't read domain name at %x\n",
|
|
dom.dom_name);
|
|
dname[0] = '\0';
|
|
}
|
|
else
|
|
dname[len] = '\0';
|
|
|
|
if ((u_short)so.so_type > STYPEMAX)
|
|
printf("* %s ?%d", dname, so.so_type);
|
|
else
|
|
printf("* %s %s", dname, stypename[so.so_type]);
|
|
|
|
/*
|
|
* protocol specific formatting
|
|
*
|
|
* Try to find interesting things to print. For tcp, the interesting
|
|
* thing is the address of the tcpcb, for udp and others, just the
|
|
* inpcb (socket pcb). For unix domain, its the address of the socket
|
|
* pcb and the address of the connected pcb (if connected). Otherwise
|
|
* just print the protocol number and address of the socket itself.
|
|
* The idea is not to duplicate netstat, but to make available enough
|
|
* information for further analysis.
|
|
*/
|
|
switch(dom.dom_family) {
|
|
case AF_INET:
|
|
getinetproto(proto.pr_protocol);
|
|
if (proto.pr_protocol == IPPROTO_TCP ) {
|
|
if (so.so_pcb) {
|
|
if (kvm_read(kd, (u_long)so.so_pcb,
|
|
(char *)&inpcb, sizeof(struct inpcb))
|
|
!= sizeof(struct inpcb)) {
|
|
dprintf(stderr,
|
|
"can't read inpcb at %x\n",
|
|
so.so_pcb);
|
|
goto bad;
|
|
}
|
|
printf(" %lx", (long)inpcb.inp_ppcb);
|
|
}
|
|
}
|
|
else if (so.so_pcb)
|
|
printf(" %lx", (long)so.so_pcb);
|
|
break;
|
|
case AF_UNIX:
|
|
/* print address of pcb and connected pcb */
|
|
if (so.so_pcb) {
|
|
printf(" %lx", (long)so.so_pcb);
|
|
if (kvm_read(kd, (u_long)so.so_pcb, (char *)&unpcb,
|
|
sizeof(struct unpcb)) != sizeof(struct unpcb)){
|
|
dprintf(stderr, "can't read unpcb at %x\n",
|
|
so.so_pcb);
|
|
goto bad;
|
|
}
|
|
if (unpcb.unp_conn) {
|
|
char shoconn[4], *cp;
|
|
|
|
cp = shoconn;
|
|
if (!(so.so_state & SS_CANTRCVMORE))
|
|
*cp++ = '<';
|
|
*cp++ = '-';
|
|
if (!(so.so_state & SS_CANTSENDMORE))
|
|
*cp++ = '>';
|
|
*cp = '\0';
|
|
printf(" %s %lx", shoconn,
|
|
(long)unpcb.unp_conn);
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
/* print protocol number and socket address */
|
|
printf(" %d %lx", proto.pr_protocol, (long)sock);
|
|
}
|
|
printf("\n");
|
|
return;
|
|
bad:
|
|
printf("* error\n");
|
|
}
|
|
|
|
/*
|
|
* getinetproto --
|
|
* print name of protocol number
|
|
*/
|
|
void
|
|
getinetproto(number)
|
|
int number;
|
|
{
|
|
char *cp;
|
|
|
|
switch(number) {
|
|
case IPPROTO_IP:
|
|
cp = "ip"; break;
|
|
case IPPROTO_ICMP:
|
|
cp ="icmp"; break;
|
|
case IPPROTO_GGP:
|
|
cp ="ggp"; break;
|
|
case IPPROTO_TCP:
|
|
cp ="tcp"; break;
|
|
case IPPROTO_EGP:
|
|
cp ="egp"; break;
|
|
case IPPROTO_PUP:
|
|
cp ="pup"; break;
|
|
case IPPROTO_UDP:
|
|
cp ="udp"; break;
|
|
case IPPROTO_IDP:
|
|
cp ="idp"; break;
|
|
case IPPROTO_RAW:
|
|
cp ="raw"; break;
|
|
default:
|
|
printf(" %d", number);
|
|
return;
|
|
}
|
|
printf(" %s", cp);
|
|
}
|
|
|
|
getfname(filename)
|
|
char *filename;
|
|
{
|
|
struct stat statbuf;
|
|
DEVS *cur;
|
|
|
|
if (stat(filename, &statbuf)) {
|
|
fprintf(stderr, "fstat: %s: %s\n", filename, strerror(errno));
|
|
return(0);
|
|
}
|
|
if ((cur = malloc(sizeof(DEVS))) == NULL) {
|
|
fprintf(stderr, "fstat: %s\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
cur->next = devs;
|
|
devs = cur;
|
|
|
|
cur->ino = statbuf.st_ino;
|
|
cur->fsid = statbuf.st_dev & 0xffff;
|
|
cur->name = filename;
|
|
return(1);
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
(void)fprintf(stderr,
|
|
"usage: fstat [-fnv] [-p pid] [-u user] [-N system] [-M core] [file ...]\n");
|
|
exit(1);
|
|
}
|