File: [local] / src / lib / libkvm / kvm_file2.c (download)
Revision 1.58, Sun Feb 11 21:29:12 2024 UTC (3 months, 4 weeks ago) by bluhm
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, HEAD
Changes since 1.57: +1 -2 lines
Remove needless includes of netinet6/ip6_var.h header in userland.
OK millert@
|
/* $OpenBSD: kvm_file2.c,v 1.58 2024/02/11 21:29:12 bluhm Exp $ */
/*
* Copyright (c) 2009 Todd C. Miller <millert@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*-
* 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.
* 3. 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.
*/
/*
* Extended 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).
*/
#define __need_process
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/uio.h>
#include <sys/ucred.h>
#include <sys/proc.h>
#define _KERNEL
#include <sys/file.h>
#include <sys/mount.h>
#undef _KERNEL
#include <sys/vnode.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/event.h>
#include <sys/eventvar.h>
#include <sys/un.h>
#include <sys/unpcb.h>
#include <sys/filedesc.h>
#include <sys/mbuf.h>
#include <sys/pipe.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/specdev.h>
#define _KERNEL
#include <ufs/ufs/quota.h>
#include <ufs/ufs/inode.h>
#undef _KERNEL
#include <nfs/nfsproto.h>
#include <nfs/rpcv2.h>
#include <nfs/nfs.h>
#include <nfs/nfsnode.h>
#include <msdosfs/bpb.h>
#include <msdosfs/denode.h>
#include <msdosfs/msdosfsmount.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#include <netinet/tcp.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#ifdef INET6
#include <netinet/ip6.h>
#endif
#include <fcntl.h>
#include <nlist.h>
#include <kvm.h>
#include <db.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include "kvm_private.h"
#include "kvm_file.h"
static struct kinfo_file *kvm_deadfile_byfile(kvm_t *, int, int,
size_t, int *);
static struct kinfo_file *kvm_deadfile_byid(kvm_t *, int, int,
size_t, int *);
static int fill_file(kvm_t *, struct kinfo_file *, struct file *, u_long,
struct vnode *, struct process *, int, pid_t);
static int filestat(kvm_t *, struct kinfo_file *, struct vnode *);
LIST_HEAD(processlist, process);
struct kinfo_file *
kvm_getfiles(kvm_t *kd, int op, int arg, size_t esize, int *cnt)
{
int mib[6], rv;
void *filebase;
size_t size;
if (ISALIVE(kd)) {
mib[0] = CTL_KERN;
mib[1] = KERN_FILE;
mib[2] = op;
mib[3] = arg;
mib[4] = esize;
do {
mib[5] = 0;
/* find size and alloc buffer */
rv = sysctl(mib, 6, NULL, &size, NULL, 0);
if (rv == -1) {
if (errno != ESRCH && kd->vmfd != -1)
goto deadway;
_kvm_syserr(kd, kd->program, "kvm_getfiles");
return (NULL);
}
size += size / 8; /* add ~10% */
filebase = _kvm_realloc(kd, kd->filebase, size);
if (filebase == NULL)
return (NULL);
kd->filebase = filebase;
/* get actual data */
mib[5] = size / esize;
rv = sysctl(mib, 6, kd->filebase, &size, NULL, 0);
if (rv == -1 && errno != ENOMEM) {
_kvm_syserr(kd, kd->program,
"kvm_getfiles");
return (NULL);
}
} while (rv == -1);
*cnt = size / esize;
return (kd->filebase);
} else {
if (esize > sizeof(struct kinfo_file)) {
_kvm_syserr(kd, kd->program,
"kvm_getfiles: unknown fields requested: libkvm out of date?");
return (NULL);
}
deadway:
switch (op) {
case KERN_FILE_BYFILE:
return (kvm_deadfile_byfile(kd, op, arg, esize, cnt));
break;
case KERN_FILE_BYPID:
case KERN_FILE_BYUID:
return (kvm_deadfile_byid(kd, op, arg, esize, cnt));
break;
default:
return (NULL);
}
}
}
static struct kinfo_file *
kvm_deadfile_byfile(kvm_t *kd, int op, int arg, size_t esize, int *cnt)
{
struct nlist nl[3], *p;
size_t buflen;
int n = 0;
char *where;
struct kinfo_file kf;
struct file *fp, file;
struct filelist filehead;
int nfiles;
nl[0].n_name = "_filehead";
nl[1].n_name = "_numfiles";
nl[2].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 (NULL);
}
if (KREAD(kd, nl[0].n_value, &filehead)) {
_kvm_err(kd, kd->program, "can't read filehead");
return (NULL);
}
if (KREAD(kd, nl[1].n_value, &nfiles)) {
_kvm_err(kd, kd->program, "can't read nfiles");
return (NULL);
}
where = _kvm_reallocarray(kd, kd->filebase, nfiles, esize);
if (where == NULL)
return (NULL);
kd->filebase = (void *)where;
buflen = nfiles * esize;
for (fp = LIST_FIRST(&filehead);
fp != NULL && esize <= buflen;
fp = LIST_NEXT(&file, f_list)) {
if (KREAD(kd, (u_long)fp, &file)) {
_kvm_err(kd, kd->program, "can't read kfp");
return (NULL);
}
if (file.f_count == 0)
continue;
if (arg != 0 && file.f_type != arg)
continue;
if (fill_file(kd, &kf, &file, (u_long)fp, NULL, NULL, 0, 0)
== -1)
return (NULL);
memcpy(where, &kf, esize);
where += esize;
buflen -= esize;
n++;
}
if (n != nfiles) {
_kvm_err(kd, kd->program, "inconsistent nfiles");
return (NULL);
}
*cnt = n;
return (kd->filebase);
}
static struct kinfo_file *
kvm_deadfile_byid(kvm_t *kd, int op, int arg, size_t esize, int *cnt)
{
size_t buflen;
struct nlist nl[4], *np;
int n = 0, matched = 0;
char *where;
struct kinfo_file kf;
struct file *fp, file;
struct filelist filehead;
struct filedesc0 filed0;
#define filed filed0.fd_fd
struct processlist allprocess;
struct process *pr, process;
struct ucred ucred;
char *filebuf = NULL;
int i, nfiles;
nl[0].n_name = "_filehead";
nl[1].n_name = "_numfiles";
nl[2].n_name = "_allprocess";
nl[3].n_name = 0;
if (kvm_nlist(kd, nl) != 0) {
for (np = nl; np->n_type != 0; ++np)
;
_kvm_err(kd, kd->program,
"%s: no such symbol", np->n_name);
return (NULL);
}
if (KREAD(kd, nl[0].n_value, &filehead)) {
_kvm_err(kd, kd->program, "can't read filehead");
return (NULL);
}
if (KREAD(kd, nl[1].n_value, &nfiles)) {
_kvm_err(kd, kd->program, "can't read nfiles");
return (NULL);
}
if (KREAD(kd, nl[2].n_value, &allprocess)) {
_kvm_err(kd, kd->program, "can't read allprocess");
return (NULL);
}
/* this may be more room than we need but counting is expensive */
where = _kvm_reallocarray(kd, kd->filebase, nfiles + 10, esize);
if (where == NULL)
return (NULL);
kd->filebase = (void *)where;
buflen = (nfiles + 10) * esize;
if (op != KERN_FILE_BYPID || arg <= 0)
matched = 1;
for (pr = LIST_FIRST(&allprocess);
pr != NULL;
pr = LIST_NEXT(&process, ps_list)) {
if (KREAD(kd, (u_long)pr, &process)) {
_kvm_err(kd, kd->program, "can't read process at %lx",
(u_long)pr);
goto cleanup;
}
/* skip system, exiting, embryonic and undead processes */
if (process.ps_flags & (PS_SYSTEM | PS_EMBRYO | PS_EXITING))
continue;
if (op == KERN_FILE_BYPID) {
/* check if this is the pid we are looking for */
if (arg > 0 && process.ps_pid != (pid_t)arg)
continue;
matched = 1;
}
if (KREAD(kd, (u_long)process.ps_ucred, &ucred)) {
_kvm_err(kd, kd->program, "can't read ucred at %lx",
(u_long)process.ps_ucred);
goto cleanup;
}
process.ps_ucred = &ucred;
if (op == KERN_FILE_BYUID && arg >= 0 &&
process.ps_ucred->cr_uid != (uid_t)arg) {
/* not the uid we are looking for */
continue;
}
if (KREAD(kd, (u_long)process.ps_fd, &filed0)) {
_kvm_err(kd, kd->program, "can't read filedesc at %lx",
(u_long)process.ps_fd);
goto cleanup;
}
if ((char *)process.ps_fd + offsetof(struct filedesc0,fd_dfiles)
== (char *)filed.fd_ofiles) {
filed.fd_ofiles = filed0.fd_dfiles;
filed.fd_ofileflags = filed0.fd_dfileflags;
} else {
size_t fsize;
char *tmp = reallocarray(filebuf,
filed.fd_nfiles, OFILESIZE);
fsize = filed.fd_nfiles * OFILESIZE;
if (tmp == NULL) {
_kvm_syserr(kd, kd->program, "realloc ofiles");
goto cleanup;
}
filebuf = tmp;
if (kvm_read(kd, (u_long)filed.fd_ofiles, filebuf,
fsize) != fsize) {
_kvm_err(kd, kd->program,
"can't read fd_ofiles");
goto cleanup;
}
filed.fd_ofiles = (void *)filebuf;
filed.fd_ofileflags = filebuf +
(filed.fd_nfiles * sizeof(struct file *));
}
process.ps_fd = &filed;
if (process.ps_textvp) {
if (buflen < esize)
goto done;
if (fill_file(kd, &kf, NULL, 0, process.ps_textvp,
&process, KERN_FILE_TEXT, process.ps_pid) == -1)
goto cleanup;
memcpy(where, &kf, esize);
where += esize;
buflen -= esize;
n++;
}
if (filed.fd_cdir) {
if (buflen < esize)
goto done;
if (fill_file(kd, &kf, NULL, 0, filed.fd_cdir,
&process, KERN_FILE_CDIR, process.ps_pid) == -1)
goto cleanup;
memcpy(where, &kf, esize);
where += esize;
buflen -= esize;
n++;
}
if (filed.fd_rdir) {
if (buflen < esize)
goto done;
if (fill_file(kd, &kf, NULL, 0, filed.fd_rdir,
&process, KERN_FILE_RDIR, process.ps_pid) == -1)
goto cleanup;
memcpy(where, &kf, esize);
where += esize;
buflen -= esize;
n++;
}
if (process.ps_tracevp) {
if (buflen < esize)
goto done;
if (fill_file(kd, &kf, NULL, 0, process.ps_tracevp,
&process, KERN_FILE_TRACE, process.ps_pid) == -1)
goto cleanup;
memcpy(where, &kf, esize);
where += esize;
buflen -= esize;
n++;
}
if (filed.fd_nfiles < 0 ||
filed.fd_lastfile >= filed.fd_nfiles ||
filed.fd_freefile > filed.fd_lastfile + 1) {
_kvm_err(kd, kd->program,
"filedesc corrupted at %lx for pid %d",
(u_long)process.ps_fd, process.ps_pid);
goto cleanup;
}
for (i = 0; i < filed.fd_nfiles; i++) {
if (buflen < esize)
goto done;
if ((fp = filed.fd_ofiles[i]) == NULL)
continue;
if (KREAD(kd, (u_long)fp, &file)) {
_kvm_err(kd, kd->program, "can't read file");
goto cleanup;
}
if (fill_file(kd, &kf, &file, (u_long)fp, NULL,
&process, i, process.ps_pid) == -1)
goto cleanup;
memcpy(where, &kf, esize);
where += esize;
buflen -= esize;
n++;
}
}
if (!matched) {
errno = ESRCH;
goto cleanup;
}
done:
*cnt = n;
free(filebuf);
return (kd->filebase);
cleanup:
free(filebuf);
return (NULL);
}
static int
fill_file(kvm_t *kd, struct kinfo_file *kf, struct file *fp, u_long fpaddr,
struct vnode *vp, struct process *pr, int fd, pid_t pid)
{
struct ucred f_cred;
memset(kf, 0, sizeof(*kf));
kf->fd_fd = fd; /* might not really be an fd */
if (fp != NULL) {
/* Fill in f_cred */
if (KREAD(kd, (u_long)fp->f_cred, &f_cred)) {
_kvm_err(kd, kd->program, "can't read f_cred");
return (-1);
}
kf->f_fileaddr = PTRTOINT64(fpaddr);
kf->f_flag = fp->f_flag;
kf->f_iflags = fp->f_iflags;
kf->f_type = fp->f_type;
kf->f_count = fp->f_count;
kf->f_ucred = PTRTOINT64(fp->f_cred);
kf->f_uid = f_cred.cr_uid;
kf->f_gid = f_cred.cr_gid;
kf->f_ops = PTRTOINT64(fp->f_ops);
kf->f_offset = fp->f_offset;
kf->f_data = PTRTOINT64(fp->f_data);
kf->f_usecount = 0;
kf->f_rxfer = fp->f_rxfer;
kf->f_rwfer = fp->f_wxfer;
kf->f_seek = fp->f_seek;
kf->f_rbytes = fp->f_rbytes;
kf->f_wbytes = fp->f_wbytes;
} else if (vp != NULL) {
/* fake it */
kf->f_type = DTYPE_VNODE;
kf->f_flag = FREAD;
if (fd == KERN_FILE_TRACE)
kf->f_flag |= FWRITE;
kf->f_data = PTRTOINT64(vp);
}
/* information about the object associated with this file */
switch (kf->f_type) {
case DTYPE_VNODE: {
struct vnode vbuf;
if (KREAD(kd, (u_long)(fp ? fp->f_data : vp), &vbuf)) {
_kvm_err(kd, kd->program, "can't read vnode");
return (-1);
}
vp = &vbuf;
kf->v_un = PTRTOINT64(vp->v_un.vu_socket);
kf->v_type = vp->v_type;
kf->v_tag = vp->v_tag;
kf->v_flag = vp->v_flag;
kf->v_data = PTRTOINT64(vp->v_data);
kf->v_mount = PTRTOINT64(vp->v_mount);
if (vp->v_mount != NULL) {
struct mount mount;
if (KREAD(kd, (u_long)vp->v_mount, &mount)) {
_kvm_err(kd, kd->program, "can't read v_mount");
return (-1);
}
strlcpy(kf->f_mntonname, mount.mnt_stat.f_mntonname,
sizeof(kf->f_mntonname));
}
/* Fill in va_fsid, va_fileid, va_mode, va_size, va_rdev */
filestat(kd, kf, vp);
break;
}
case DTYPE_SOCKET: {
struct socket sock;
struct sosplice ssp;
struct protosw protosw;
struct domain domain;
if (KREAD(kd, (u_long)fp->f_data, &sock)) {
_kvm_err(kd, kd->program, "can't read socket");
return (-1);
}
kf->so_type = sock.so_type;
kf->so_state = sock.so_state;
kf->so_pcb = PTRTOINT64(sock.so_pcb);
if (KREAD(kd, (u_long)sock.so_proto, &protosw)) {
_kvm_err(kd, kd->program, "can't read protosw");
return (-1);
}
kf->so_protocol = protosw.pr_protocol;
if (KREAD(kd, (u_long)protosw.pr_domain, &domain)) {
_kvm_err(kd, kd->program, "can't read domain");
return (-1);
}
kf->so_family = domain.dom_family;
kf->so_rcv_cc = sock.so_rcv.sb_cc;
kf->so_snd_cc = sock.so_snd.sb_cc;
if (sock.so_sp) {
if (KREAD(kd, (u_long)sock.so_sp, &ssp)) {
_kvm_err(kd, kd->program, "can't read splice");
return (-1);
}
if (ssp.ssp_socket) {
kf->so_splice = PTRTOINT64(ssp.ssp_socket);
kf->so_splicelen = ssp.ssp_len;
} else if (ssp.ssp_soback) {
kf->so_splicelen = -1;
}
}
if (!sock.so_pcb)
break;
switch (kf->so_family) {
case AF_INET: {
struct inpcb inpcb;
if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) {
_kvm_err(kd, kd->program, "can't read inpcb");
return (-1);
}
kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb);
kf->inp_lport = inpcb.inp_lport;
kf->inp_laddru[0] = inpcb.inp_laddr.s_addr;
kf->inp_fport = inpcb.inp_fport;
kf->inp_faddru[0] = inpcb.inp_faddr.s_addr;
kf->inp_rtableid = inpcb.inp_rtableid;
if (sock.so_type == SOCK_RAW)
kf->inp_proto = inpcb.inp_ip.ip_p;
if (protosw.pr_protocol == IPPROTO_TCP) {
struct tcpcb tcpcb;
if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) {
_kvm_err(kd, kd->program,
"can't read tcpcb");
return (-1);
}
kf->t_rcv_wnd = tcpcb.rcv_wnd;
kf->t_snd_wnd = tcpcb.snd_wnd;
kf->t_snd_cwnd = tcpcb.snd_cwnd;
kf->t_state = tcpcb.t_state;
}
break;
}
case AF_INET6: {
struct inpcb inpcb;
#define s6_addr32 __u6_addr.__u6_addr32
if (KREAD(kd, (u_long)sock.so_pcb, &inpcb)) {
_kvm_err(kd, kd->program, "can't read inpcb");
return (-1);
}
kf->inp_ppcb = PTRTOINT64(inpcb.inp_ppcb);
kf->inp_lport = inpcb.inp_lport;
kf->inp_laddru[0] = inpcb.inp_laddr6.s6_addr32[0];
kf->inp_laddru[1] = inpcb.inp_laddr6.s6_addr32[1];
kf->inp_laddru[2] = inpcb.inp_laddr6.s6_addr32[2];
kf->inp_laddru[3] = inpcb.inp_laddr6.s6_addr32[3];
kf->inp_fport = inpcb.inp_fport;
kf->inp_faddru[0] = inpcb.inp_laddr6.s6_addr32[0];
kf->inp_faddru[1] = inpcb.inp_faddr6.s6_addr32[1];
kf->inp_faddru[2] = inpcb.inp_faddr6.s6_addr32[2];
kf->inp_faddru[3] = inpcb.inp_faddr6.s6_addr32[3];
kf->inp_rtableid = inpcb.inp_rtableid;
if (sock.so_type == SOCK_RAW)
kf->inp_proto = inpcb.inp_ipv6.ip6_nxt;
if (protosw.pr_protocol == IPPROTO_TCP) {
struct tcpcb tcpcb;
if (KREAD(kd, (u_long)inpcb.inp_ppcb, &tcpcb)) {
_kvm_err(kd, kd->program,
"can't read tcpcb");
return (-1);
}
kf->t_rcv_wnd = tcpcb.rcv_wnd;
kf->t_snd_wnd = tcpcb.snd_wnd;
kf->t_snd_cwnd = tcpcb.snd_cwnd;
kf->t_state = tcpcb.t_state;
}
break;
}
case AF_UNIX: {
struct unpcb unpcb;
if (KREAD(kd, (u_long)sock.so_pcb, &unpcb)) {
_kvm_err(kd, kd->program, "can't read unpcb");
return (-1);
}
kf->f_msgcount = unpcb.unp_msgcount;
kf->unp_conn = PTRTOINT64(unpcb.unp_conn);
kf->unp_refs = PTRTOINT64(
SLIST_FIRST(&unpcb.unp_refs));
kf->unp_nextref = PTRTOINT64(
SLIST_NEXT(&unpcb, unp_nextref));
kf->v_un = PTRTOINT64(unpcb.unp_vnode);
if (unpcb.unp_addr != NULL) {
struct mbuf mb;
struct sockaddr_un un;
if (KREAD(kd, (u_long)unpcb.unp_addr, &mb)) {
_kvm_err(kd, kd->program,
"can't read sockaddr_un mbuf");
return (-1);
}
if (KREAD(kd, (u_long)mb.m_data, &un)) {
_kvm_err(kd, kd->program,
"can't read sockaddr_un");
return (-1);
}
kf->unp_addr = PTRTOINT64(unpcb.unp_addr);
memcpy(kf->unp_path, un.sun_path, un.sun_len
- offsetof(struct sockaddr_un,sun_path));
}
break;
}
}
break;
}
case DTYPE_PIPE: {
struct pipe pipe;
if (KREAD(kd, (u_long)fp->f_data, &pipe)) {
_kvm_err(kd, kd->program, "can't read pipe");
return (-1);
}
kf->pipe_peer = PTRTOINT64(pipe.pipe_peer);
kf->pipe_state = pipe.pipe_state;
break;
}
case DTYPE_KQUEUE: {
struct kqueue kqi;
if (KREAD(kd, (u_long)fp->f_data, &kqi)) {
_kvm_err(kd, kd->program, "can't read kqi");
return (-1);
}
kf->kq_count = kqi.kq_count;
kf->kq_state = kqi.kq_state;
break;
}
}
/* per-process information for KERN_FILE_BY[PU]ID */
if (pr != NULL) {
kf->p_pid = pid;
kf->p_uid = pr->ps_ucred->cr_uid;
kf->p_gid = pr->ps_ucred->cr_gid;
kf->p_tid = -1;
strlcpy(kf->p_comm, pr->ps_comm, sizeof(kf->p_comm));
if (pr->ps_fd != NULL)
kf->fd_ofileflags = pr->ps_fd->fd_ofileflags[fd];
}
return (0);
}
mode_t
_kvm_getftype(enum vtype v_type)
{
mode_t ftype = 0;
switch (v_type) {
case VREG:
ftype = S_IFREG;
break;
case VDIR:
ftype = S_IFDIR;
break;
case VBLK:
ftype = S_IFBLK;
break;
case VCHR:
ftype = S_IFCHR;
break;
case VLNK:
ftype = S_IFLNK;
break;
case VSOCK:
ftype = S_IFSOCK;
break;
case VFIFO:
ftype = S_IFIFO;
break;
case VNON:
case VBAD:
break;
}
return (ftype);
}
static int
ufs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp)
{
struct inode inode;
struct ufs1_dinode di1;
if (KREAD(kd, (u_long)VTOI(vp), &inode)) {
_kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp));
return (-1);
}
if (KREAD(kd, (u_long)inode.i_din1, &di1)) {
_kvm_err(kd, kd->program, "can't read dinode at %p",
inode.i_din1);
return (-1);
}
inode.i_din1 = &di1;
kf->va_fsid = inode.i_dev & 0xffff;
kf->va_fileid = (long)inode.i_number;
kf->va_mode = inode.i_ffs1_mode;
kf->va_size = inode.i_ffs1_size;
kf->va_rdev = inode.i_ffs1_rdev;
kf->va_nlink = inode.i_ffs1_nlink;
return (0);
}
static int
ext2fs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp)
{
struct inode inode;
struct ext2fs_dinode e2di;
if (KREAD(kd, (u_long)VTOI(vp), &inode)) {
_kvm_err(kd, kd->program, "can't read inode at %p", VTOI(vp));
return (-1);
}
if (KREAD(kd, (u_long)inode.i_e2din, &e2di)) {
_kvm_err(kd, kd->program, "can't read dinode at %p",
inode.i_e2din);
return (-1);
}
inode.i_e2din = &e2di;
kf->va_fsid = inode.i_dev & 0xffff;
kf->va_fileid = (long)inode.i_number;
kf->va_mode = inode.i_e2fs_mode;
kf->va_size = inode.i_e2fs_size;
kf->va_rdev = 0; /* XXX */
kf->va_nlink = inode.i_e2fs_nlink;
return (0);
}
static int
msdos_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp)
{
struct denode de;
struct msdosfsmount mp;
if (KREAD(kd, (u_long)VTODE(vp), &de)) {
_kvm_err(kd, kd->program, "can't read denode at %p", VTODE(vp));
return (-1);
}
if (KREAD(kd, (u_long)de.de_pmp, &mp)) {
_kvm_err(kd, kd->program, "can't read mount struct at %p",
de.de_pmp);
return (-1);
}
kf->va_fsid = de.de_dev & 0xffff;
kf->va_fileid = 0; /* XXX see msdosfs_vptofh() for more info */
kf->va_mode = (mp.pm_mask & 0777) | _kvm_getftype(vp->v_type);
kf->va_size = de.de_FileSize;
kf->va_rdev = 0; /* msdosfs doesn't support device files */
kf->va_nlink = 1;
return (0);
}
static int
nfs_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp)
{
struct nfsnode nfsnode;
if (KREAD(kd, (u_long)VTONFS(vp), &nfsnode)) {
_kvm_err(kd, kd->program, "can't read nfsnode at %p",
VTONFS(vp));
return (-1);
}
kf->va_fsid = nfsnode.n_vattr.va_fsid;
kf->va_fileid = nfsnode.n_vattr.va_fileid;
kf->va_size = nfsnode.n_size;
kf->va_rdev = nfsnode.n_vattr.va_rdev;
kf->va_mode = (mode_t)nfsnode.n_vattr.va_mode | _kvm_getftype(vp->v_type);
kf->va_nlink = nfsnode.n_vattr.va_nlink;
return (0);
}
static int
spec_filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp)
{
struct specinfo specinfo;
struct vnode parent;
if (KREAD(kd, (u_long)vp->v_specinfo, &specinfo)) {
_kvm_err(kd, kd->program, "can't read specinfo at %p",
vp->v_specinfo);
return (-1);
}
vp->v_specinfo = &specinfo;
if (KREAD(kd, (u_long)vp->v_specparent, &parent)) {
_kvm_err(kd, kd->program, "can't read parent vnode at %p",
vp->v_specparent);
return (-1);
}
if (ufs_filestat(kd, kf, vp))
return (-1);
return (0);
}
static int
filestat(kvm_t *kd, struct kinfo_file *kf, struct vnode *vp)
{
int ret = 0;
if (vp->v_type != VNON && vp->v_type != VBAD) {
switch (vp->v_tag) {
case VT_UFS:
case VT_MFS:
ret = ufs_filestat(kd, kf, vp);
break;
case VT_NFS:
ret = nfs_filestat(kd, kf, vp);
break;
case VT_EXT2FS:
ret = ext2fs_filestat(kd, kf, vp);
break;
case VT_ISOFS:
ret = _kvm_stat_cd9660(kd, kf, vp);
break;
case VT_MSDOSFS:
ret = msdos_filestat(kd, kf, vp);
break;
case VT_UDF:
ret = _kvm_stat_udf(kd, kf, vp);
break;
case VT_NTFS:
ret = _kvm_stat_ntfs(kd, kf, vp);
break;
case VT_NON:
if (vp->v_flag & VCLONE)
ret = spec_filestat(kd, kf, vp);
break;
default:
ret = -1;
break;
}
}
return (ret);
}
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