2 * Copyright (c) 1989, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #if defined(LIBC_SCCS) && !defined(lint)
35 static char sccsid[] = "@(#)kvm_file.c 8.1 (Berkeley) 6/4/93";
37 #endif /* LIBC_SCCS and not lint */
40 * File list interface for kvm. pstat, fstat and netstat are
41 * users of this code, so we've factored it out into a separate module.
42 * Thus, we keep this grunge out of the other kvm applications (i.e.,
43 * most other applications are interested only in open/close/read/nlist).
46 #include <sys/param.h>
53 #include <sys/ioctl.h>
58 #include <vm/vm_param.h>
60 #include <sys/sysctl.h>
66 #include "kvm_private.h"
68 #define KREAD(kd, addr, obj) \
69 (kvm_read(kd, addr, obj, sizeof(*obj)) != sizeof(*obj))
72 * Get file structures.
75 kvm_deadfiles(kd, op, arg, filehead_o, nfiles)
80 int buflen = kd->arglen, n = 0;
82 char *where = kd->argspc;
83 struct filelist filehead;
86 * first copyout filehead
88 if (buflen > sizeof (filehead)) {
89 if (KREAD(kd, filehead_o, &filehead)) {
90 _kvm_err(kd, kd->program, "can't read filehead");
93 buflen -= sizeof (filehead);
94 where += sizeof (filehead);
95 *(struct filelist *)kd->argspc = filehead;
98 * followed by an array of file structures
100 LIST_FOREACH(fp, &filehead, f_list) {
101 if (buflen > sizeof (struct file)) {
102 if (KREAD(kd, (long)fp, ((struct file *)where))) {
103 _kvm_err(kd, kd->program, "can't read kfp");
106 buflen -= sizeof (struct file);
107 fp = (struct file *)where;
108 where += sizeof (struct file);
113 _kvm_err(kd, kd->program, "inconsistant nfiles");
120 kvm_getfiles(kd, op, arg, cnt)
125 int mib[2], st, nfiles;
127 struct file *fp, *fplim;
128 struct filelist filehead;
134 st = sysctl(mib, 2, NULL, &size, NULL, 0);
136 _kvm_syserr(kd, kd->program, "kvm_getfiles");
140 kd->argspc = (char *)_kvm_malloc(kd, size);
141 else if (kd->arglen < size)
142 kd->argspc = (char *)_kvm_realloc(kd, kd->argspc, size);
146 st = sysctl(mib, 2, kd->argspc, &size, NULL, 0);
147 if (st == -1 || size < sizeof(filehead)) {
148 _kvm_syserr(kd, kd->program, "kvm_getfiles");
151 filehead = *(struct filelist *)kd->argspc;
152 fp = (struct file *)(kd->argspc + sizeof (filehead));
153 fplim = (struct file *)(kd->argspc + size);
154 for (nfiles = 0; LIST_FIRST(&filehead) && (fp < fplim); nfiles++, fp++)
155 LIST_FIRST(&filehead) = LIST_NEXT(fp, f_list);
157 struct nlist nl[3], *p;
159 nl[0].n_name = "_filehead";
160 nl[1].n_name = "_nfiles";
163 if (kvm_nlist(kd, nl) != 0) {
164 for (p = nl; p->n_type != 0; ++p)
166 _kvm_err(kd, kd->program,
167 "%s: no such symbol", p->n_name);
170 if (KREAD(kd, nl[0].n_value, &nfiles)) {
171 _kvm_err(kd, kd->program, "can't read nfiles");
174 size = sizeof(filehead) + (nfiles + 10) * sizeof(struct file);
176 kd->argspc = (char *)_kvm_malloc(kd, size);
177 else if (kd->arglen < size)
178 kd->argspc = (char *)_kvm_realloc(kd, kd->argspc, size);
182 nfiles = kvm_deadfiles(kd, op, arg, nl[1].n_value, nfiles);