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
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9 * notice, this list of conditions and the following disclaimer.
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11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
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34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
37 #if defined(LIBC_SCCS) && !defined(lint)
39 static char sccsid[] = "@(#)kvm_file.c 8.1 (Berkeley) 6/4/93";
41 #endif /* LIBC_SCCS and not lint */
44 * File list interface for kvm. pstat, fstat and netstat are
45 * users of this code, so we've factored it out into a separate module.
46 * Thus, we keep this grunge out of the other kvm applications (i.e.,
47 * most other applications are interested only in open/close/read/nlist).
50 #include <sys/param.h>
57 #include <sys/ioctl.h>
62 #include <vm/vm_param.h>
64 #include <sys/sysctl.h>
70 #include "kvm_private.h"
72 #define KREAD(kd, addr, obj) \
73 (kvm_read(kd, addr, obj, sizeof(*obj)) != sizeof(*obj))
76 * Get file structures.
79 kvm_deadfiles(kd, op, arg, filehead_o, nfiles)
84 int buflen = kd->arglen, n = 0;
86 char *where = kd->argspc;
87 struct filelist filehead;
90 * first copyout filehead
92 if (buflen > sizeof (filehead)) {
93 if (KREAD(kd, filehead_o, &filehead)) {
94 _kvm_err(kd, kd->program, "can't read filehead");
97 buflen -= sizeof (filehead);
98 where += sizeof (filehead);
99 *(struct filelist *)kd->argspc = filehead;
102 * followed by an array of file structures
104 LIST_FOREACH(fp, &filehead, f_list) {
105 if (buflen > sizeof (struct file)) {
106 if (KREAD(kd, (long)fp, ((struct file *)where))) {
107 _kvm_err(kd, kd->program, "can't read kfp");
110 buflen -= sizeof (struct file);
111 fp = (struct file *)where;
112 where += sizeof (struct file);
117 _kvm_err(kd, kd->program, "inconsistant nfiles");
124 kvm_getfiles(kd, op, arg, cnt)
129 int mib[2], st, nfiles;
131 struct file *fp, *fplim;
132 struct filelist filehead;
138 st = sysctl(mib, 2, NULL, &size, NULL, 0);
140 _kvm_syserr(kd, kd->program, "kvm_getfiles");
144 kd->argspc = (char *)_kvm_malloc(kd, size);
145 else if (kd->arglen < size)
146 kd->argspc = (char *)_kvm_realloc(kd, kd->argspc, size);
150 st = sysctl(mib, 2, kd->argspc, &size, NULL, 0);
151 if (st == -1 || size < sizeof(filehead)) {
152 _kvm_syserr(kd, kd->program, "kvm_getfiles");
155 filehead = *(struct filelist *)kd->argspc;
156 fp = (struct file *)(kd->argspc + sizeof (filehead));
157 fplim = (struct file *)(kd->argspc + size);
158 for (nfiles = 0; LIST_FIRST(&filehead) && (fp < fplim); nfiles++, fp++)
159 LIST_FIRST(&filehead) = LIST_NEXT(fp, f_list);
161 struct nlist nl[3], *p;
163 nl[0].n_name = "_filehead";
164 nl[1].n_name = "_nfiles";
167 if (kvm_nlist(kd, nl) != 0) {
168 for (p = nl; p->n_type != 0; ++p)
170 _kvm_err(kd, kd->program,
171 "%s: no such symbol", p->n_name);
174 if (KREAD(kd, nl[0].n_value, &nfiles)) {
175 _kvm_err(kd, kd->program, "can't read nfiles");
178 size = sizeof(filehead) + (nfiles + 10) * sizeof(struct file);
180 kd->argspc = (char *)_kvm_malloc(kd, size);
181 else if (kd->arglen < size)
182 kd->argspc = (char *)_kvm_realloc(kd, kd->argspc, size);
186 nfiles = kvm_deadfiles(kd, op, arg, nl[1].n_value, nfiles);