232 lines
6.3 KiB
C
232 lines
6.3 KiB
C
/*-
|
|
* Copyright (c) 1989, 1992, 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.
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char sccsid[] = "@(#)kvm_file.c 8.1 (Berkeley) 6/4/93";
|
|
#endif
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* File list interface for kvm. pstat, fstat and netstat are
|
|
* users of this code, so we've factored it out into a separate module.
|
|
* Thus, we keep this grunge out of the other kvm applications (i.e.,
|
|
* most other applications are interested only in open/close/read/nlist).
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/user.h>
|
|
#include <sys/proc.h>
|
|
#define _WANT_FILE /* make file.h give us 'struct file' */
|
|
#include <sys/file.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/ioctl.h>
|
|
#include <nlist.h>
|
|
#include <kvm.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <limits.h>
|
|
#include <ndbm.h>
|
|
#include <paths.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "kvm_private.h"
|
|
|
|
#define KREAD(kd, addr, obj) \
|
|
(kvm_read(kd, addr, obj, sizeof(*obj)) != sizeof(*obj))
|
|
|
|
#define KREADN(kd, addr, obj, cnt) \
|
|
(kvm_read(kd, addr, obj, (cnt)) != (cnt))
|
|
|
|
/*
|
|
* Get file structures.
|
|
*/
|
|
static int
|
|
kvm_deadfiles(kd, op, arg, allproc_o, nprocs)
|
|
kvm_t *kd;
|
|
int op, arg, nprocs;
|
|
long allproc_o;
|
|
{
|
|
struct proc proc;
|
|
struct filedesc filed;
|
|
int buflen = kd->arglen, ocnt = 0, n = 0, once = 0, i;
|
|
struct file **ofiles;
|
|
struct file *fp;
|
|
struct proc *p;
|
|
char *where = kd->argspc;
|
|
|
|
if (buflen < sizeof (struct file *) + sizeof (struct file))
|
|
return (0);
|
|
if (KREAD(kd, allproc_o, &p)) {
|
|
_kvm_err(kd, kd->program, "cannot read allproc");
|
|
return (0);
|
|
}
|
|
for (; p != NULL; p = LIST_NEXT(&proc, p_list)) {
|
|
if (KREAD(kd, (u_long)p, &proc)) {
|
|
_kvm_err(kd, kd->program, "can't read proc at %x", p);
|
|
goto fail;
|
|
}
|
|
if (proc.p_state == PRS_NEW)
|
|
continue;
|
|
if (proc.p_fd == NULL)
|
|
continue;
|
|
if (KREAD(kd, (u_long)p->p_fd, &filed)) {
|
|
_kvm_err(kd, kd->program, "can't read filedesc at %x",
|
|
p->p_fd);
|
|
goto fail;
|
|
}
|
|
if (filed.fd_lastfile + 1 > ocnt) {
|
|
ocnt = filed.fd_lastfile + 1;
|
|
free(ofiles);
|
|
ofiles = (struct file **)_kvm_malloc(kd,
|
|
ocnt * sizeof(struct file *));
|
|
if (ofiles == 0)
|
|
return (0);
|
|
}
|
|
if (KREADN(kd, (u_long)filed.fd_ofiles, ofiles,
|
|
ocnt * sizeof(struct file *))) {
|
|
_kvm_err(kd, kd->program, "can't read ofiles at %x",
|
|
filed.fd_ofiles);
|
|
return (0);
|
|
}
|
|
for (i = 0; i <= filed.fd_lastfile; i++) {
|
|
if ((fp = ofiles[i]) == NULL)
|
|
continue;
|
|
/*
|
|
* copyout filehead (legacy)
|
|
*/
|
|
if (!once) {
|
|
*(struct file **)kd->argspc = fp;
|
|
*(struct file **)where = fp;
|
|
buflen -= sizeof (fp);
|
|
where += sizeof (fp);
|
|
once = 1;
|
|
}
|
|
if (buflen < sizeof (struct file))
|
|
goto fail;
|
|
if (KREAD(kd, (long)fp, ((struct file *)where))) {
|
|
_kvm_err(kd, kd->program, "can't read kfp");
|
|
goto fail;
|
|
}
|
|
buflen -= sizeof (struct file);
|
|
fp = (struct file *)where;
|
|
where += sizeof (struct file);
|
|
n++;
|
|
}
|
|
}
|
|
free(ofiles);
|
|
return (n);
|
|
fail:
|
|
free(ofiles);
|
|
return (0);
|
|
|
|
}
|
|
|
|
char *
|
|
kvm_getfiles(kd, op, arg, cnt)
|
|
kvm_t *kd;
|
|
int op, arg;
|
|
int *cnt;
|
|
{
|
|
int mib[2], st, n, nfiles, nprocs;
|
|
size_t size;
|
|
|
|
_kvm_syserr(kd, kd->program, "kvm_getfiles has been broken for years");
|
|
return (0);
|
|
if (ISALIVE(kd)) {
|
|
size = 0;
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_FILE;
|
|
st = sysctl(mib, 2, NULL, &size, NULL, 0);
|
|
if (st == -1) {
|
|
_kvm_syserr(kd, kd->program, "kvm_getfiles");
|
|
return (0);
|
|
}
|
|
if (kd->argspc == 0)
|
|
kd->argspc = (char *)_kvm_malloc(kd, size);
|
|
else if (kd->arglen < size)
|
|
kd->argspc = (char *)_kvm_realloc(kd, kd->argspc, size);
|
|
if (kd->argspc == 0)
|
|
return (0);
|
|
kd->arglen = size;
|
|
st = sysctl(mib, 2, kd->argspc, &size, NULL, 0);
|
|
if (st != 0) {
|
|
_kvm_syserr(kd, kd->program, "kvm_getfiles");
|
|
return (0);
|
|
}
|
|
nfiles = size / sizeof(struct xfile);
|
|
} else {
|
|
struct nlist nl[4], *p;
|
|
|
|
nl[0].n_name = "_allproc";
|
|
nl[1].n_name = "_nprocs";
|
|
nl[2].n_name = "_nfiles";
|
|
nl[3].n_name = 0;
|
|
|
|
if (kvm_nlist(kd, nl) != 0) {
|
|
for (p = nl; p->n_type != 0; ++p)
|
|
;
|
|
_kvm_err(kd, kd->program,
|
|
"%s: no such symbol", p->n_name);
|
|
return (0);
|
|
}
|
|
if (KREAD(kd, nl[1].n_value, &nprocs)) {
|
|
_kvm_err(kd, kd->program, "can't read nprocs");
|
|
return (0);
|
|
}
|
|
if (KREAD(kd, nl[2].n_value, &nfiles)) {
|
|
_kvm_err(kd, kd->program, "can't read nfiles");
|
|
return (0);
|
|
}
|
|
size = sizeof(void *) + (nfiles + 10) * sizeof(struct file);
|
|
if (kd->argspc == 0)
|
|
kd->argspc = (char *)_kvm_malloc(kd, size);
|
|
else if (kd->arglen < size)
|
|
kd->argspc = (char *)_kvm_realloc(kd, kd->argspc, size);
|
|
if (kd->argspc == 0)
|
|
return (0);
|
|
kd->arglen = size;
|
|
n = kvm_deadfiles(kd, op, arg, nl[0].n_value, nprocs);
|
|
if (n != nfiles) {
|
|
_kvm_err(kd, kd->program, "inconsistant nfiles");
|
|
return (0);
|
|
}
|
|
nfiles = n;
|
|
}
|
|
*cnt = nfiles;
|
|
return (kd->argspc);
|
|
}
|