2011-05-12 10:11:39 +00:00
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/*-
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2017-11-18 14:26:50 +00:00
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* SPDX-License-Identifier: BSD-4-Clause
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*
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2017-03-30 18:21:36 +00:00
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* Copyright (c) 2017 Dell EMC
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2011-05-12 10:11:39 +00:00
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* Copyright (c) 2009 Stanislav Sedov <stas@FreeBSD.org>
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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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#include <sys/cdefs.h>
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#include <sys/param.h>
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2013-04-20 08:10:47 +00:00
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#include <sys/elf.h>
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2011-05-12 10:11:39 +00:00
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#include <sys/time.h>
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2013-04-20 07:59:44 +00:00
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#include <sys/resourcevar.h>
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2013-05-01 15:01:05 +00:00
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#define _WANT_UCRED
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#include <sys/ucred.h>
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#undef _WANT_UCRED
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2011-05-12 10:11:39 +00:00
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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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2017-10-02 23:29:56 +00:00
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#define _WANT_SOCKET
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2011-05-12 10:11:39 +00:00
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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/un.h>
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2017-10-02 23:29:56 +00:00
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#define _WANT_UNPCB
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2011-05-12 10:11:39 +00:00
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#include <sys/unpcb.h>
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#include <sys/sysctl.h>
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#include <sys/tty.h>
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#include <sys/filedesc.h>
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#include <sys/queue.h>
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#define _WANT_FILE
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#include <sys/file.h>
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#include <sys/conf.h>
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2013-05-03 21:11:57 +00:00
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#include <sys/ksem.h>
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2012-04-01 18:22:48 +00:00
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#include <sys/mman.h>
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2014-03-16 11:04:44 +00:00
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#include <sys/capsicum.h>
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2017-03-30 20:42:16 +00:00
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#include <sys/ptrace.h>
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2021-02-18 13:43:58 +00:00
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#define _WANT_MOUNT
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2011-05-12 10:11:39 +00:00
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#include <sys/mount.h>
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Merge OpenZFS support in to HEAD.
The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.
I would advise against doing 'zpool upgrade'
or creating indispensable pools using new
features until this change has had a month+
to soak.
Work on merging FreeBSD support in to what was
at the time "ZFS on Linux" began in August 2018.
I first publicly proposed transitioning FreeBSD
to (new) OpenZFS on December 18th, 2018. FreeBSD
support in OpenZFS was finally completed in December
2019. A CFT for downstreaming OpenZFS support in
to FreeBSD was first issued on July 8th. All issues
that were reported have been addressed or, for
a couple of less critical matters there are
pull requests in progress with OpenZFS. iXsystems
has tested and dogfooded extensively internally.
The TrueNAS 12 release is based on OpenZFS with
some additional features that have not yet made
it upstream.
Improvements include:
project quotas, encrypted datasets,
allocation classes, vectorized raidz,
vectorized checksums, various command line
improvements, zstd compression.
Thanks to those who have helped along the way:
Ryan Moeller, Allan Jude, Zack Welch, and many
others.
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25872
2020-08-25 02:21:27 +00:00
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#include <sys/filedesc.h>
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2011-05-12 10:11:39 +00:00
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#include <sys/pipe.h>
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#include <fs/devfs/devfs.h>
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#include <fs/devfs/devfs_int.h>
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#include <nfs/nfsproto.h>
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#include <nfsclient/nfs.h>
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#include <nfsclient/nfsnode.h>
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#include <vm/vm.h>
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#include <vm/vm_map.h>
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#include <vm/vm_object.h>
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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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Hide struct inpcb, struct tcpcb from the userland.
This is a painful change, but it is needed. On the one hand, we avoid
modifying them, and this slows down some ideas, on the other hand we still
eventually modify them and tools like netstat(1) never work on next version of
FreeBSD. We maintain a ton of spares in them, and we already got some ifdef
hell at the end of tcpcb.
Details:
- Hide struct inpcb, struct tcpcb under _KERNEL || _WANT_FOO.
- Make struct xinpcb, struct xtcpcb pure API structures, not including
kernel structures inpcb and tcpcb inside. Export into these structures
the fields from inpcb and tcpcb that are known to be used, and put there
a ton of spare space.
- Make kernel and userland utilities compilable after these changes.
- Bump __FreeBSD_version.
Reviewed by: rrs, gnn
Differential Revision: D10018
2017-03-21 06:39:49 +00:00
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#define _WANT_INPCB
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2011-05-12 10:11:39 +00:00
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#include <netinet/in_pcb.h>
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#include <assert.h>
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#include <ctype.h>
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#include <err.h>
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#include <fcntl.h>
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#include <kvm.h>
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#include <libutil.h>
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#include <limits.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 <stddef.h>
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#include <string.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <libprocstat.h>
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#include "libprocstat_internal.h"
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#include "common_kvm.h"
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2013-04-20 07:47:26 +00:00
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#include "core.h"
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2011-05-12 10:11:39 +00:00
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int statfs(const char *, struct statfs *); /* XXX */
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#define PROCSTAT_KVM 1
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#define PROCSTAT_SYSCTL 2
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2013-04-20 07:47:26 +00:00
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#define PROCSTAT_CORE 3
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2011-05-12 10:11:39 +00:00
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2013-04-20 08:07:04 +00:00
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static char **getargv(struct procstat *procstat, struct kinfo_proc *kp,
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size_t nchr, int env);
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2011-05-12 10:11:39 +00:00
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static char *getmnton(kvm_t *kd, struct mount *m);
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2013-04-20 07:49:35 +00:00
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static struct kinfo_vmentry * kinfo_getvmmap_core(struct procstat_core *core,
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int *cntp);
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2013-04-20 08:10:47 +00:00
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static Elf_Auxinfo *procstat_getauxv_core(struct procstat_core *core,
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unsigned int *cntp);
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static Elf_Auxinfo *procstat_getauxv_sysctl(pid_t pid, unsigned int *cntp);
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2011-05-12 10:11:39 +00:00
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static struct filestat_list *procstat_getfiles_kvm(
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struct procstat *procstat, struct kinfo_proc *kp, int mmapped);
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static struct filestat_list *procstat_getfiles_sysctl(
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struct procstat *procstat, struct kinfo_proc *kp, int mmapped);
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static int procstat_get_pipe_info_sysctl(struct filestat *fst,
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struct pipestat *pipe, char *errbuf);
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static int procstat_get_pipe_info_kvm(kvm_t *kd, struct filestat *fst,
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struct pipestat *pipe, char *errbuf);
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static int procstat_get_pts_info_sysctl(struct filestat *fst,
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struct ptsstat *pts, char *errbuf);
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static int procstat_get_pts_info_kvm(kvm_t *kd, struct filestat *fst,
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struct ptsstat *pts, char *errbuf);
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2013-05-03 21:11:57 +00:00
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static int procstat_get_sem_info_sysctl(struct filestat *fst,
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struct semstat *sem, char *errbuf);
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static int procstat_get_sem_info_kvm(kvm_t *kd, struct filestat *fst,
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struct semstat *sem, char *errbuf);
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2012-04-01 18:22:48 +00:00
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static int procstat_get_shm_info_sysctl(struct filestat *fst,
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struct shmstat *shm, char *errbuf);
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static int procstat_get_shm_info_kvm(kvm_t *kd, struct filestat *fst,
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struct shmstat *shm, char *errbuf);
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2011-05-12 10:11:39 +00:00
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static int procstat_get_socket_info_sysctl(struct filestat *fst,
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struct sockstat *sock, char *errbuf);
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static int procstat_get_socket_info_kvm(kvm_t *kd, struct filestat *fst,
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struct sockstat *sock, char *errbuf);
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static int to_filestat_flags(int flags);
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static int procstat_get_vnode_info_kvm(kvm_t *kd, struct filestat *fst,
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struct vnstat *vn, char *errbuf);
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static int procstat_get_vnode_info_sysctl(struct filestat *fst,
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struct vnstat *vn, char *errbuf);
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2013-04-20 07:54:07 +00:00
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static gid_t *procstat_getgroups_core(struct procstat_core *core,
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unsigned int *count);
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2013-05-01 15:01:05 +00:00
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static gid_t * procstat_getgroups_kvm(kvm_t *kd, struct kinfo_proc *kp,
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unsigned int *count);
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2013-04-20 07:54:07 +00:00
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static gid_t *procstat_getgroups_sysctl(pid_t pid, unsigned int *count);
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2013-04-20 08:17:20 +00:00
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static struct kinfo_kstack *procstat_getkstack_sysctl(pid_t pid,
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int *cntp);
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2013-05-01 15:01:05 +00:00
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static int procstat_getosrel_core(struct procstat_core *core,
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int *osrelp);
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static int procstat_getosrel_kvm(kvm_t *kd, struct kinfo_proc *kp,
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int *osrelp);
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static int procstat_getosrel_sysctl(pid_t pid, int *osrelp);
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2013-04-20 08:02:43 +00:00
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static int procstat_getpathname_core(struct procstat_core *core,
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char *pathname, size_t maxlen);
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static int procstat_getpathname_sysctl(pid_t pid, char *pathname,
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size_t maxlen);
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2013-04-20 07:59:44 +00:00
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static int procstat_getrlimit_core(struct procstat_core *core, int which,
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struct rlimit* rlimit);
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2013-05-01 15:01:05 +00:00
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static int procstat_getrlimit_kvm(kvm_t *kd, struct kinfo_proc *kp,
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int which, struct rlimit* rlimit);
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2013-04-20 07:59:44 +00:00
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static int procstat_getrlimit_sysctl(pid_t pid, int which,
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struct rlimit* rlimit);
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2013-04-20 07:57:08 +00:00
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static int procstat_getumask_core(struct procstat_core *core,
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unsigned short *maskp);
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2013-05-01 15:01:05 +00:00
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static int procstat_getumask_kvm(kvm_t *kd, struct kinfo_proc *kp,
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unsigned short *maskp);
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2013-04-20 07:57:08 +00:00
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static int procstat_getumask_sysctl(pid_t pid, unsigned short *maskp);
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2011-05-12 10:11:39 +00:00
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static int vntype2psfsttype(int type);
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void
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procstat_close(struct procstat *procstat)
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{
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assert(procstat);
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if (procstat->type == PROCSTAT_KVM)
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kvm_close(procstat->kd);
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2013-04-20 07:47:26 +00:00
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else if (procstat->type == PROCSTAT_CORE)
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procstat_core_close(procstat->core);
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2013-04-20 08:07:04 +00:00
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procstat_freeargv(procstat);
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procstat_freeenvv(procstat);
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2011-05-18 10:04:54 +00:00
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free(procstat);
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2011-05-12 10:11:39 +00:00
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}
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struct procstat *
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procstat_open_sysctl(void)
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{
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struct procstat *procstat;
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procstat = calloc(1, sizeof(*procstat));
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if (procstat == NULL) {
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warn("malloc()");
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return (NULL);
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}
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procstat->type = PROCSTAT_SYSCTL;
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return (procstat);
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}
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struct procstat *
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procstat_open_kvm(const char *nlistf, const char *memf)
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{
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struct procstat *procstat;
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kvm_t *kd;
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char buf[_POSIX2_LINE_MAX];
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procstat = calloc(1, sizeof(*procstat));
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if (procstat == NULL) {
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warn("malloc()");
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return (NULL);
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}
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kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf);
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if (kd == NULL) {
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warnx("kvm_openfiles(): %s", buf);
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free(procstat);
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return (NULL);
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}
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procstat->type = PROCSTAT_KVM;
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procstat->kd = kd;
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return (procstat);
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}
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|
2013-04-20 07:47:26 +00:00
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struct procstat *
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procstat_open_core(const char *filename)
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{
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struct procstat *procstat;
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struct procstat_core *core;
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procstat = calloc(1, sizeof(*procstat));
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if (procstat == NULL) {
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warn("malloc()");
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return (NULL);
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}
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core = procstat_core_open(filename);
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if (core == NULL) {
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free(procstat);
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return (NULL);
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}
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procstat->type = PROCSTAT_CORE;
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procstat->core = core;
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return (procstat);
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}
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|
2011-05-12 10:11:39 +00:00
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struct kinfo_proc *
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procstat_getprocs(struct procstat *procstat, int what, int arg,
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unsigned int *count)
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{
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struct kinfo_proc *p0, *p;
|
2013-06-11 20:00:49 +00:00
|
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size_t len, olen;
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2011-05-12 10:11:39 +00:00
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int name[4];
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2012-10-06 20:17:28 +00:00
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int cnt;
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2011-05-12 10:11:39 +00:00
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int error;
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assert(procstat);
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assert(count);
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p = NULL;
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if (procstat->type == PROCSTAT_KVM) {
|
2012-10-06 20:17:28 +00:00
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*count = 0;
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p0 = kvm_getprocs(procstat->kd, what, arg, &cnt);
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if (p0 == NULL || cnt <= 0)
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2011-05-12 10:11:39 +00:00
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return (NULL);
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2012-10-06 20:17:28 +00:00
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*count = cnt;
|
2011-05-12 10:11:39 +00:00
|
|
|
len = *count * sizeof(*p);
|
|
|
|
p = malloc(len);
|
|
|
|
if (p == NULL) {
|
2011-06-18 21:29:25 +00:00
|
|
|
warnx("malloc(%zu)", len);
|
2011-05-12 10:11:39 +00:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
bcopy(p0, p, len);
|
|
|
|
return (p);
|
|
|
|
} else if (procstat->type == PROCSTAT_SYSCTL) {
|
|
|
|
len = 0;
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = what;
|
|
|
|
name[3] = arg;
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), NULL, &len, NULL, 0);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (error < 0 && errno != EPERM) {
|
|
|
|
warn("sysctl(kern.proc)");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (len == 0) {
|
|
|
|
warnx("no processes?");
|
|
|
|
goto fail;
|
|
|
|
}
|
2013-06-11 20:00:49 +00:00
|
|
|
do {
|
|
|
|
len += len / 10;
|
|
|
|
p = reallocf(p, len);
|
|
|
|
if (p == NULL) {
|
|
|
|
warnx("reallocf(%zu)", len);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
olen = len;
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), p, &len, NULL, 0);
|
2013-06-11 20:00:49 +00:00
|
|
|
} while (error < 0 && errno == ENOMEM && olen == len);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (error < 0 && errno != EPERM) {
|
|
|
|
warn("sysctl(kern.proc)");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
/* Perform simple consistency checks. */
|
2013-04-20 07:47:26 +00:00
|
|
|
if ((len % sizeof(*p)) != 0 || p->ki_structsize != sizeof(*p)) {
|
|
|
|
warnx("kinfo_proc structure size mismatch (len = %zu)", len);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
*count = len / sizeof(*p);
|
|
|
|
return (p);
|
|
|
|
} else if (procstat->type == PROCSTAT_CORE) {
|
|
|
|
p = procstat_core_get(procstat->core, PSC_TYPE_PROC, NULL,
|
|
|
|
&len);
|
2011-05-12 10:11:39 +00:00
|
|
|
if ((len % sizeof(*p)) != 0 || p->ki_structsize != sizeof(*p)) {
|
|
|
|
warnx("kinfo_proc structure size mismatch");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
*count = len / sizeof(*p);
|
|
|
|
return (p);
|
|
|
|
} else {
|
2011-06-18 22:16:55 +00:00
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2011-05-12 10:11:39 +00:00
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
fail:
|
|
|
|
if (p)
|
|
|
|
free(p);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freeprocs(struct procstat *procstat __unused, struct kinfo_proc *p)
|
|
|
|
{
|
|
|
|
|
|
|
|
if (p != NULL)
|
|
|
|
free(p);
|
|
|
|
p = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct filestat_list *
|
|
|
|
procstat_getfiles(struct procstat *procstat, struct kinfo_proc *kp, int mmapped)
|
|
|
|
{
|
2013-04-20 07:47:26 +00:00
|
|
|
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
2011-05-15 00:46:25 +00:00
|
|
|
return (procstat_getfiles_kvm(procstat, kp, mmapped));
|
2013-04-20 07:47:26 +00:00
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getfiles_sysctl(procstat, kp, mmapped));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2011-05-12 10:11:39 +00:00
|
|
|
return (NULL);
|
2013-04-20 07:47:26 +00:00
|
|
|
}
|
2011-05-12 10:11:39 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freefiles(struct procstat *procstat, struct filestat_list *head)
|
|
|
|
{
|
|
|
|
struct filestat *fst, *tmp;
|
|
|
|
|
|
|
|
STAILQ_FOREACH_SAFE(fst, head, next, tmp) {
|
|
|
|
if (fst->fs_path != NULL)
|
|
|
|
free(fst->fs_path);
|
|
|
|
free(fst);
|
|
|
|
}
|
|
|
|
free(head);
|
|
|
|
if (procstat->vmentries != NULL) {
|
2011-06-18 21:46:11 +00:00
|
|
|
free(procstat->vmentries);
|
2011-05-12 10:11:39 +00:00
|
|
|
procstat->vmentries = NULL;
|
|
|
|
}
|
|
|
|
if (procstat->files != NULL) {
|
2011-06-18 21:46:11 +00:00
|
|
|
free(procstat->files);
|
2011-05-12 10:11:39 +00:00
|
|
|
procstat->files = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct filestat *
|
|
|
|
filestat_new_entry(void *typedep, int type, int fd, int fflags, int uflags,
|
Change the cap_rights_t type from uint64_t to a structure that we can extend
in the future in a backward compatible (API and ABI) way.
The cap_rights_t represents capability rights. We used to use one bit to
represent one right, but we are running out of spare bits. Currently the new
structure provides place for 114 rights (so 50 more than the previous
cap_rights_t), but it is possible to grow the structure to hold at least 285
rights, although we can make it even larger if 285 rights won't be enough.
The structure definition looks like this:
struct cap_rights {
uint64_t cr_rights[CAP_RIGHTS_VERSION + 2];
};
The initial CAP_RIGHTS_VERSION is 0.
The top two bits in the first element of the cr_rights[] array contain total
number of elements in the array - 2. This means if those two bits are equal to
0, we have 2 array elements.
The top two bits in all remaining array elements should be 0.
The next five bits in all array elements contain array index. Only one bit is
used and bit position in this five-bits range defines array index. This means
there can be at most five array elements in the future.
To define new right the CAPRIGHT() macro must be used. The macro takes two
arguments - an array index and a bit to set, eg.
#define CAP_PDKILL CAPRIGHT(1, 0x0000000000000800ULL)
We still support aliases that combine few rights, but the rights have to belong
to the same array element, eg:
#define CAP_LOOKUP CAPRIGHT(0, 0x0000000000000400ULL)
#define CAP_FCHMOD CAPRIGHT(0, 0x0000000000002000ULL)
#define CAP_FCHMODAT (CAP_FCHMOD | CAP_LOOKUP)
There is new API to manage the new cap_rights_t structure:
cap_rights_t *cap_rights_init(cap_rights_t *rights, ...);
void cap_rights_set(cap_rights_t *rights, ...);
void cap_rights_clear(cap_rights_t *rights, ...);
bool cap_rights_is_set(const cap_rights_t *rights, ...);
bool cap_rights_is_valid(const cap_rights_t *rights);
void cap_rights_merge(cap_rights_t *dst, const cap_rights_t *src);
void cap_rights_remove(cap_rights_t *dst, const cap_rights_t *src);
bool cap_rights_contains(const cap_rights_t *big, const cap_rights_t *little);
Capability rights to the cap_rights_init(), cap_rights_set(),
cap_rights_clear() and cap_rights_is_set() functions are provided by
separating them with commas, eg:
cap_rights_t rights;
cap_rights_init(&rights, CAP_READ, CAP_WRITE, CAP_FSTAT);
There is no need to terminate the list of rights, as those functions are
actually macros that take care of the termination, eg:
#define cap_rights_set(rights, ...) \
__cap_rights_set((rights), __VA_ARGS__, 0ULL)
void __cap_rights_set(cap_rights_t *rights, ...);
Thanks to using one bit as an array index we can assert in those functions that
there are no two rights belonging to different array elements provided
together. For example this is illegal and will be detected, because CAP_LOOKUP
belongs to element 0 and CAP_PDKILL to element 1:
cap_rights_init(&rights, CAP_LOOKUP | CAP_PDKILL);
Providing several rights that belongs to the same array's element this way is
correct, but is not advised. It should only be used for aliases definition.
This commit also breaks compatibility with some existing Capsicum system calls,
but I see no other way to do that. This should be fine as Capsicum is still
experimental and this change is not going to 9.x.
Sponsored by: The FreeBSD Foundation
2013-09-05 00:09:56 +00:00
|
|
|
int refcount, off_t offset, char *path, cap_rights_t *cap_rightsp)
|
2011-05-12 10:11:39 +00:00
|
|
|
{
|
|
|
|
struct filestat *entry;
|
|
|
|
|
|
|
|
entry = calloc(1, sizeof(*entry));
|
|
|
|
if (entry == NULL) {
|
|
|
|
warn("malloc()");
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
entry->fs_typedep = typedep;
|
|
|
|
entry->fs_fflags = fflags;
|
|
|
|
entry->fs_uflags = uflags;
|
|
|
|
entry->fs_fd = fd;
|
|
|
|
entry->fs_type = type;
|
|
|
|
entry->fs_ref_count = refcount;
|
|
|
|
entry->fs_offset = offset;
|
|
|
|
entry->fs_path = path;
|
2013-10-09 20:58:50 +00:00
|
|
|
if (cap_rightsp != NULL)
|
|
|
|
entry->fs_cap_rights = *cap_rightsp;
|
|
|
|
else
|
|
|
|
cap_rights_init(&entry->fs_cap_rights);
|
2011-05-12 10:11:39 +00:00
|
|
|
return (entry);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct vnode *
|
|
|
|
getctty(kvm_t *kd, struct kinfo_proc *kp)
|
|
|
|
{
|
|
|
|
struct pgrp pgrp;
|
|
|
|
struct proc proc;
|
|
|
|
struct session sess;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
assert(kp);
|
|
|
|
error = kvm_read_all(kd, (unsigned long)kp->ki_paddr, &proc,
|
|
|
|
sizeof(proc));
|
|
|
|
if (error == 0) {
|
|
|
|
warnx("can't read proc struct at %p for pid %d",
|
|
|
|
kp->ki_paddr, kp->ki_pid);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if (proc.p_pgrp == NULL)
|
|
|
|
return (NULL);
|
|
|
|
error = kvm_read_all(kd, (unsigned long)proc.p_pgrp, &pgrp,
|
|
|
|
sizeof(pgrp));
|
|
|
|
if (error == 0) {
|
|
|
|
warnx("can't read pgrp struct at %p for pid %d",
|
|
|
|
proc.p_pgrp, kp->ki_pid);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
error = kvm_read_all(kd, (unsigned long)pgrp.pg_session, &sess,
|
|
|
|
sizeof(sess));
|
|
|
|
if (error == 0) {
|
|
|
|
warnx("can't read session struct at %p for pid %d",
|
|
|
|
pgrp.pg_session, kp->ki_pid);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
return (sess.s_ttyvp);
|
|
|
|
}
|
|
|
|
|
2019-12-08 22:33:51 +00:00
|
|
|
static int
|
|
|
|
procstat_vm_map_reader(void *token, vm_map_entry_t addr, vm_map_entry_t dest)
|
|
|
|
{
|
|
|
|
kvm_t *kd;
|
|
|
|
|
|
|
|
kd = (kvm_t *)token;
|
|
|
|
return (kvm_read_all(kd, (unsigned long)addr, dest, sizeof(*dest)));
|
|
|
|
}
|
|
|
|
|
2011-05-12 10:11:39 +00:00
|
|
|
static struct filestat_list *
|
|
|
|
procstat_getfiles_kvm(struct procstat *procstat, struct kinfo_proc *kp, int mmapped)
|
|
|
|
{
|
|
|
|
struct file file;
|
|
|
|
struct filedesc filed;
|
2020-11-17 21:14:13 +00:00
|
|
|
struct pwddesc pathsd;
|
2020-07-15 10:13:23 +00:00
|
|
|
struct fdescenttbl *fdt;
|
2020-03-01 21:53:46 +00:00
|
|
|
struct pwd pwd;
|
2020-03-08 00:23:36 +00:00
|
|
|
unsigned long pwd_addr;
|
2011-05-12 10:11:39 +00:00
|
|
|
struct vm_map_entry vmentry;
|
|
|
|
struct vm_object object;
|
|
|
|
struct vmspace vmspace;
|
|
|
|
vm_map_entry_t entryp;
|
|
|
|
vm_object_t objp;
|
|
|
|
struct vnode *vp;
|
|
|
|
struct filestat *entry;
|
|
|
|
struct filestat_list *head;
|
|
|
|
kvm_t *kd;
|
|
|
|
void *data;
|
2020-07-15 10:13:23 +00:00
|
|
|
int fflags;
|
|
|
|
unsigned int i;
|
2011-05-12 10:11:39 +00:00
|
|
|
int prot, type;
|
2020-07-15 10:13:23 +00:00
|
|
|
size_t fdt_size;
|
2011-05-12 10:11:39 +00:00
|
|
|
unsigned int nfiles;
|
2020-03-01 21:53:46 +00:00
|
|
|
bool haspwd;
|
2011-05-12 10:11:39 +00:00
|
|
|
|
|
|
|
assert(procstat);
|
|
|
|
kd = procstat->kd;
|
|
|
|
if (kd == NULL)
|
|
|
|
return (NULL);
|
2020-11-17 21:14:13 +00:00
|
|
|
if (kp->ki_fd == NULL || kp->ki_pd == NULL)
|
2011-05-12 10:11:39 +00:00
|
|
|
return (NULL);
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)kp->ki_fd, &filed,
|
|
|
|
sizeof(filed))) {
|
|
|
|
warnx("can't read filedesc at %p", (void *)kp->ki_fd);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2020-11-17 21:14:13 +00:00
|
|
|
if (!kvm_read_all(kd, (unsigned long)kp->ki_pd, &pathsd,
|
|
|
|
sizeof(pathsd))) {
|
|
|
|
warnx("can't read pwddesc at %p", (void *)kp->ki_pd);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2020-03-01 21:53:46 +00:00
|
|
|
haspwd = false;
|
2020-11-17 21:14:13 +00:00
|
|
|
pwd_addr = (unsigned long)(PWDDESC_KVM_LOAD_PWD(&pathsd));
|
2020-03-08 00:23:36 +00:00
|
|
|
if (pwd_addr != 0) {
|
|
|
|
if (!kvm_read_all(kd, pwd_addr, &pwd, sizeof(pwd))) {
|
|
|
|
warnx("can't read fd_pwd at %p", (void *)pwd_addr);
|
2020-03-01 21:53:46 +00:00
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
haspwd = true;
|
|
|
|
}
|
2011-05-12 10:11:39 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate list head.
|
|
|
|
*/
|
|
|
|
head = malloc(sizeof(*head));
|
|
|
|
if (head == NULL)
|
|
|
|
return (NULL);
|
|
|
|
STAILQ_INIT(head);
|
|
|
|
|
|
|
|
/* root directory vnode, if one. */
|
2020-03-01 21:53:46 +00:00
|
|
|
if (haspwd) {
|
|
|
|
if (pwd.pwd_rdir) {
|
|
|
|
entry = filestat_new_entry(pwd.pwd_rdir, PS_FST_TYPE_VNODE, -1,
|
|
|
|
PS_FST_FFLAG_READ, PS_FST_UFLAG_RDIR, 0, 0, NULL, NULL);
|
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
|
|
|
/* current working directory vnode. */
|
|
|
|
if (pwd.pwd_cdir) {
|
|
|
|
entry = filestat_new_entry(pwd.pwd_cdir, PS_FST_TYPE_VNODE, -1,
|
|
|
|
PS_FST_FFLAG_READ, PS_FST_UFLAG_CDIR, 0, 0, NULL, NULL);
|
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
|
|
|
/* jail root, if any. */
|
|
|
|
if (pwd.pwd_jdir) {
|
|
|
|
entry = filestat_new_entry(pwd.pwd_jdir, PS_FST_TYPE_VNODE, -1,
|
|
|
|
PS_FST_FFLAG_READ, PS_FST_UFLAG_JAIL, 0, 0, NULL, NULL);
|
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
2011-05-12 10:11:39 +00:00
|
|
|
}
|
|
|
|
/* ktrace vnode, if one */
|
|
|
|
if (kp->ki_tracep) {
|
|
|
|
entry = filestat_new_entry(kp->ki_tracep, PS_FST_TYPE_VNODE, -1,
|
|
|
|
PS_FST_FFLAG_READ | PS_FST_FFLAG_WRITE,
|
2013-10-09 20:58:50 +00:00
|
|
|
PS_FST_UFLAG_TRACE, 0, 0, NULL, NULL);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
|
|
|
/* text vnode, if one */
|
|
|
|
if (kp->ki_textvp) {
|
|
|
|
entry = filestat_new_entry(kp->ki_textvp, PS_FST_TYPE_VNODE, -1,
|
2013-10-09 20:58:50 +00:00
|
|
|
PS_FST_FFLAG_READ, PS_FST_UFLAG_TEXT, 0, 0, NULL, NULL);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
|
|
|
/* Controlling terminal. */
|
|
|
|
if ((vp = getctty(kd, kp)) != NULL) {
|
|
|
|
entry = filestat_new_entry(vp, PS_FST_TYPE_VNODE, -1,
|
|
|
|
PS_FST_FFLAG_READ | PS_FST_FFLAG_WRITE,
|
2013-10-09 20:58:50 +00:00
|
|
|
PS_FST_UFLAG_CTTY, 0, 0, NULL, NULL);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
|
|
|
|
2020-07-15 10:13:23 +00:00
|
|
|
if (!kvm_read_all(kd, (unsigned long)filed.fd_files, &nfiles,
|
|
|
|
sizeof(nfiles))) {
|
|
|
|
warnx("can't read fd_files at %p", (void *)filed.fd_files);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
fdt_size = sizeof(*fdt) + nfiles * sizeof(struct filedescent);
|
|
|
|
fdt = malloc(fdt_size);
|
|
|
|
if (fdt == NULL) {
|
|
|
|
warn("malloc(%zu)", fdt_size);
|
2011-05-12 10:11:39 +00:00
|
|
|
goto do_mmapped;
|
|
|
|
}
|
2020-07-15 10:13:23 +00:00
|
|
|
if (!kvm_read_all(kd, (unsigned long)filed.fd_files, fdt, fdt_size)) {
|
|
|
|
warnx("cannot read file structures at %p", (void *)filed.fd_files);
|
|
|
|
free(fdt);
|
2011-05-12 10:11:39 +00:00
|
|
|
goto do_mmapped;
|
|
|
|
}
|
2020-07-15 10:13:23 +00:00
|
|
|
for (i = 0; i < nfiles; i++) {
|
|
|
|
if (fdt->fdt_ofiles[i].fde_file == NULL) {
|
2011-05-12 10:11:39 +00:00
|
|
|
continue;
|
2020-07-15 10:13:23 +00:00
|
|
|
}
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)fdt->fdt_ofiles[i].fde_file, &file,
|
2011-05-12 10:11:39 +00:00
|
|
|
sizeof(struct file))) {
|
|
|
|
warnx("can't read file %d at %p", i,
|
2020-07-15 10:13:23 +00:00
|
|
|
(void *)fdt->fdt_ofiles[i].fde_file);
|
2011-05-12 10:11:39 +00:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
switch (file.f_type) {
|
|
|
|
case DTYPE_VNODE:
|
|
|
|
type = PS_FST_TYPE_VNODE;
|
|
|
|
data = file.f_vnode;
|
|
|
|
break;
|
|
|
|
case DTYPE_SOCKET:
|
|
|
|
type = PS_FST_TYPE_SOCKET;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
|
|
|
case DTYPE_PIPE:
|
|
|
|
type = PS_FST_TYPE_PIPE;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
|
|
|
case DTYPE_FIFO:
|
|
|
|
type = PS_FST_TYPE_FIFO;
|
|
|
|
data = file.f_vnode;
|
|
|
|
break;
|
|
|
|
#ifdef DTYPE_PTS
|
|
|
|
case DTYPE_PTS:
|
|
|
|
type = PS_FST_TYPE_PTS;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
|
|
|
#endif
|
2013-05-03 21:11:57 +00:00
|
|
|
case DTYPE_SEM:
|
|
|
|
type = PS_FST_TYPE_SEM;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
2012-04-01 18:22:48 +00:00
|
|
|
case DTYPE_SHM:
|
|
|
|
type = PS_FST_TYPE_SHM;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
2017-10-03 11:45:24 +00:00
|
|
|
case DTYPE_PROCDESC:
|
|
|
|
type = PS_FST_TYPE_PROCDESC;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
2018-12-03 23:42:04 +00:00
|
|
|
case DTYPE_DEV:
|
|
|
|
type = PS_FST_TYPE_DEV;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
2020-12-23 14:17:44 +00:00
|
|
|
case DTYPE_EVENTFD:
|
|
|
|
type = PS_FST_TYPE_EVENTFD;
|
|
|
|
data = file.f_data;
|
|
|
|
break;
|
2011-05-12 10:11:39 +00:00
|
|
|
default:
|
|
|
|
continue;
|
|
|
|
}
|
2011-08-14 00:42:09 +00:00
|
|
|
/* XXXRW: No capability rights support for kvm yet. */
|
2011-05-12 10:11:39 +00:00
|
|
|
entry = filestat_new_entry(data, type, i,
|
2013-10-09 20:58:50 +00:00
|
|
|
to_filestat_flags(file.f_flag), 0, 0, 0, NULL, NULL);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
2020-07-15 10:13:23 +00:00
|
|
|
free(fdt);
|
2011-05-12 10:11:39 +00:00
|
|
|
|
|
|
|
do_mmapped:
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Process mmapped files if requested.
|
|
|
|
*/
|
|
|
|
if (mmapped) {
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)kp->ki_vmspace, &vmspace,
|
|
|
|
sizeof(vmspace))) {
|
|
|
|
warnx("can't read vmspace at %p",
|
|
|
|
(void *)kp->ki_vmspace);
|
|
|
|
goto exit;
|
|
|
|
}
|
2019-12-08 22:33:51 +00:00
|
|
|
|
|
|
|
vmentry = vmspace.vm_map.header;
|
|
|
|
for (entryp = vm_map_entry_read_succ(kd, &vmentry, procstat_vm_map_reader);
|
|
|
|
entryp != NULL && entryp != &kp->ki_vmspace->vm_map.header;
|
|
|
|
entryp = vm_map_entry_read_succ(kd, &vmentry, procstat_vm_map_reader)) {
|
2011-05-12 10:11:39 +00:00
|
|
|
if (vmentry.eflags & MAP_ENTRY_IS_SUB_MAP)
|
|
|
|
continue;
|
|
|
|
if ((objp = vmentry.object.vm_object) == NULL)
|
|
|
|
continue;
|
|
|
|
for (; objp; objp = object.backing_object) {
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)objp,
|
|
|
|
&object, sizeof(object))) {
|
|
|
|
warnx("can't read vm_object at %p",
|
|
|
|
(void *)objp);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We want only vnode objects. */
|
|
|
|
if (object.type != OBJT_VNODE)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
prot = vmentry.protection;
|
|
|
|
fflags = 0;
|
|
|
|
if (prot & VM_PROT_READ)
|
|
|
|
fflags = PS_FST_FFLAG_READ;
|
2011-06-18 23:01:26 +00:00
|
|
|
if ((vmentry.eflags & MAP_ENTRY_COW) == 0 &&
|
|
|
|
prot & VM_PROT_WRITE)
|
2011-05-12 10:11:39 +00:00
|
|
|
fflags |= PS_FST_FFLAG_WRITE;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Create filestat entry.
|
|
|
|
*/
|
|
|
|
entry = filestat_new_entry(object.handle,
|
|
|
|
PS_FST_TYPE_VNODE, -1, fflags,
|
2013-10-09 20:58:50 +00:00
|
|
|
PS_FST_UFLAG_MMAP, 0, 0, NULL, NULL);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
2019-12-08 22:33:51 +00:00
|
|
|
if (entryp == NULL)
|
|
|
|
warnx("can't read vm_map_entry");
|
2011-05-12 10:11:39 +00:00
|
|
|
}
|
|
|
|
exit:
|
|
|
|
return (head);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* kinfo types to filestat translation.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
kinfo_type2fst(int kftype)
|
|
|
|
{
|
|
|
|
static struct {
|
|
|
|
int kf_type;
|
|
|
|
int fst_type;
|
|
|
|
} kftypes2fst[] = {
|
2017-10-03 11:45:24 +00:00
|
|
|
{ KF_TYPE_PROCDESC, PS_FST_TYPE_PROCDESC },
|
2018-12-03 23:42:04 +00:00
|
|
|
{ KF_TYPE_DEV, PS_FST_TYPE_DEV },
|
2011-05-12 10:11:39 +00:00
|
|
|
{ KF_TYPE_FIFO, PS_FST_TYPE_FIFO },
|
|
|
|
{ KF_TYPE_KQUEUE, PS_FST_TYPE_KQUEUE },
|
|
|
|
{ KF_TYPE_MQUEUE, PS_FST_TYPE_MQUEUE },
|
|
|
|
{ KF_TYPE_NONE, PS_FST_TYPE_NONE },
|
|
|
|
{ KF_TYPE_PIPE, PS_FST_TYPE_PIPE },
|
|
|
|
{ KF_TYPE_PTS, PS_FST_TYPE_PTS },
|
|
|
|
{ KF_TYPE_SEM, PS_FST_TYPE_SEM },
|
|
|
|
{ KF_TYPE_SHM, PS_FST_TYPE_SHM },
|
|
|
|
{ KF_TYPE_SOCKET, PS_FST_TYPE_SOCKET },
|
|
|
|
{ KF_TYPE_VNODE, PS_FST_TYPE_VNODE },
|
2020-12-23 14:17:44 +00:00
|
|
|
{ KF_TYPE_EVENTFD, PS_FST_TYPE_EVENTFD },
|
2011-05-12 10:11:39 +00:00
|
|
|
{ KF_TYPE_UNKNOWN, PS_FST_TYPE_UNKNOWN }
|
|
|
|
};
|
|
|
|
#define NKFTYPES (sizeof(kftypes2fst) / sizeof(*kftypes2fst))
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
for (i = 0; i < NKFTYPES; i++)
|
|
|
|
if (kftypes2fst[i].kf_type == kftype)
|
|
|
|
break;
|
|
|
|
if (i == NKFTYPES)
|
|
|
|
return (PS_FST_TYPE_UNKNOWN);
|
|
|
|
return (kftypes2fst[i].fst_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* kinfo flags to filestat translation.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
kinfo_fflags2fst(int kfflags)
|
|
|
|
{
|
|
|
|
static struct {
|
|
|
|
int kf_flag;
|
|
|
|
int fst_flag;
|
|
|
|
} kfflags2fst[] = {
|
|
|
|
{ KF_FLAG_APPEND, PS_FST_FFLAG_APPEND },
|
|
|
|
{ KF_FLAG_ASYNC, PS_FST_FFLAG_ASYNC },
|
|
|
|
{ KF_FLAG_CREAT, PS_FST_FFLAG_CREAT },
|
|
|
|
{ KF_FLAG_DIRECT, PS_FST_FFLAG_DIRECT },
|
|
|
|
{ KF_FLAG_EXCL, PS_FST_FFLAG_EXCL },
|
|
|
|
{ KF_FLAG_EXEC, PS_FST_FFLAG_EXEC },
|
|
|
|
{ KF_FLAG_EXLOCK, PS_FST_FFLAG_EXLOCK },
|
|
|
|
{ KF_FLAG_FSYNC, PS_FST_FFLAG_SYNC },
|
|
|
|
{ KF_FLAG_HASLOCK, PS_FST_FFLAG_HASLOCK },
|
|
|
|
{ KF_FLAG_NOFOLLOW, PS_FST_FFLAG_NOFOLLOW },
|
|
|
|
{ KF_FLAG_NONBLOCK, PS_FST_FFLAG_NONBLOCK },
|
|
|
|
{ KF_FLAG_READ, PS_FST_FFLAG_READ },
|
|
|
|
{ KF_FLAG_SHLOCK, PS_FST_FFLAG_SHLOCK },
|
|
|
|
{ KF_FLAG_TRUNC, PS_FST_FFLAG_TRUNC },
|
|
|
|
{ KF_FLAG_WRITE, PS_FST_FFLAG_WRITE }
|
|
|
|
};
|
|
|
|
#define NKFFLAGS (sizeof(kfflags2fst) / sizeof(*kfflags2fst))
|
|
|
|
unsigned int i;
|
|
|
|
int flags;
|
|
|
|
|
|
|
|
flags = 0;
|
|
|
|
for (i = 0; i < NKFFLAGS; i++)
|
|
|
|
if ((kfflags & kfflags2fst[i].kf_flag) != 0)
|
|
|
|
flags |= kfflags2fst[i].fst_flag;
|
|
|
|
return (flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
kinfo_uflags2fst(int fd)
|
|
|
|
{
|
|
|
|
|
|
|
|
switch (fd) {
|
|
|
|
case KF_FD_TYPE_CTTY:
|
|
|
|
return (PS_FST_UFLAG_CTTY);
|
|
|
|
case KF_FD_TYPE_CWD:
|
|
|
|
return (PS_FST_UFLAG_CDIR);
|
|
|
|
case KF_FD_TYPE_JAIL:
|
|
|
|
return (PS_FST_UFLAG_JAIL);
|
|
|
|
case KF_FD_TYPE_TEXT:
|
|
|
|
return (PS_FST_UFLAG_TEXT);
|
|
|
|
case KF_FD_TYPE_TRACE:
|
|
|
|
return (PS_FST_UFLAG_TRACE);
|
|
|
|
case KF_FD_TYPE_ROOT:
|
|
|
|
return (PS_FST_UFLAG_RDIR);
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2013-04-20 07:47:26 +00:00
|
|
|
static struct kinfo_file *
|
|
|
|
kinfo_getfile_core(struct procstat_core *core, int *cntp)
|
|
|
|
{
|
|
|
|
int cnt;
|
|
|
|
size_t len;
|
|
|
|
char *buf, *bp, *eb;
|
|
|
|
struct kinfo_file *kif, *kp, *kf;
|
|
|
|
|
|
|
|
buf = procstat_core_get(core, PSC_TYPE_FILES, NULL, &len);
|
|
|
|
if (buf == NULL)
|
|
|
|
return (NULL);
|
|
|
|
/*
|
|
|
|
* XXXMG: The code below is just copy&past from libutil.
|
|
|
|
* The code duplication can be avoided if libutil
|
|
|
|
* is extended to provide something like:
|
|
|
|
* struct kinfo_file *kinfo_getfile_from_buf(const char *buf,
|
|
|
|
* size_t len, int *cntp);
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* Pass 1: count items */
|
|
|
|
cnt = 0;
|
|
|
|
bp = buf;
|
|
|
|
eb = buf + len;
|
|
|
|
while (bp < eb) {
|
|
|
|
kf = (struct kinfo_file *)(uintptr_t)bp;
|
Detect badly behaved coredump note helpers
Coredump notes depend on being able to invoke dump routines twice; once
in a dry-run mode to get the size of the note, and another to actually
emit the note to the corefile.
When a note helper emits a different length section the second time
around than the length it requested the first time, the kernel produces
a corrupt coredump.
NT_PROCSTAT_FILES output length, when packing kinfo structs, is tied to
the length of filenames corresponding to vnodes in the process' fd table
via vn_fullpath. As vnodes may move around during dump, this is racy.
So:
- Detect badly behaved notes in putnote() and pad underfilled notes.
- Add a fail point, debug.fail_point.fill_kinfo_vnode__random_path to
exercise the NT_PROCSTAT_FILES corruption. It simply picks random
lengths to expand or truncate paths to in fo_fill_kinfo_vnode().
- Add a sysctl, kern.coredump_pack_fileinfo, to allow users to
disable kinfo packing for PROCSTAT_FILES notes. This should avoid
both FILES note corruption and truncation, even if filenames change,
at the cost of about 1 kiB in padding bloat per open fd. Document
the new sysctl in core.5.
- Fix note_procstat_files to self-limit in the 2nd pass. Since
sometimes this will result in a short write, pad up to our advertised
size. This addresses note corruption, at the risk of sometimes
truncating the last several fd info entries.
- Fix NT_PROCSTAT_FILES consumers libutil and libprocstat to grok the
zero padding.
With suggestions from: bjk, jhb, kib, wblock
Approved by: markj (mentor)
Relnotes: yes
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3548
2015-09-03 20:32:10 +00:00
|
|
|
if (kf->kf_structsize == 0)
|
|
|
|
break;
|
2013-04-20 07:47:26 +00:00
|
|
|
bp += kf->kf_structsize;
|
|
|
|
cnt++;
|
|
|
|
}
|
|
|
|
|
|
|
|
kif = calloc(cnt, sizeof(*kif));
|
|
|
|
if (kif == NULL) {
|
|
|
|
free(buf);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
bp = buf;
|
|
|
|
eb = buf + len;
|
|
|
|
kp = kif;
|
|
|
|
/* Pass 2: unpack */
|
|
|
|
while (bp < eb) {
|
|
|
|
kf = (struct kinfo_file *)(uintptr_t)bp;
|
Detect badly behaved coredump note helpers
Coredump notes depend on being able to invoke dump routines twice; once
in a dry-run mode to get the size of the note, and another to actually
emit the note to the corefile.
When a note helper emits a different length section the second time
around than the length it requested the first time, the kernel produces
a corrupt coredump.
NT_PROCSTAT_FILES output length, when packing kinfo structs, is tied to
the length of filenames corresponding to vnodes in the process' fd table
via vn_fullpath. As vnodes may move around during dump, this is racy.
So:
- Detect badly behaved notes in putnote() and pad underfilled notes.
- Add a fail point, debug.fail_point.fill_kinfo_vnode__random_path to
exercise the NT_PROCSTAT_FILES corruption. It simply picks random
lengths to expand or truncate paths to in fo_fill_kinfo_vnode().
- Add a sysctl, kern.coredump_pack_fileinfo, to allow users to
disable kinfo packing for PROCSTAT_FILES notes. This should avoid
both FILES note corruption and truncation, even if filenames change,
at the cost of about 1 kiB in padding bloat per open fd. Document
the new sysctl in core.5.
- Fix note_procstat_files to self-limit in the 2nd pass. Since
sometimes this will result in a short write, pad up to our advertised
size. This addresses note corruption, at the risk of sometimes
truncating the last several fd info entries.
- Fix NT_PROCSTAT_FILES consumers libutil and libprocstat to grok the
zero padding.
With suggestions from: bjk, jhb, kib, wblock
Approved by: markj (mentor)
Relnotes: yes
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3548
2015-09-03 20:32:10 +00:00
|
|
|
if (kf->kf_structsize == 0)
|
|
|
|
break;
|
2013-04-20 07:47:26 +00:00
|
|
|
/* Copy/expand into pre-zeroed buffer */
|
|
|
|
memcpy(kp, kf, kf->kf_structsize);
|
|
|
|
/* Advance to next packed record */
|
|
|
|
bp += kf->kf_structsize;
|
|
|
|
/* Set field size to fixed length, advance */
|
|
|
|
kp->kf_structsize = sizeof(*kp);
|
|
|
|
kp++;
|
|
|
|
}
|
|
|
|
free(buf);
|
|
|
|
*cntp = cnt;
|
|
|
|
return (kif); /* Caller must free() return value */
|
|
|
|
}
|
|
|
|
|
2011-05-12 10:11:39 +00:00
|
|
|
static struct filestat_list *
|
2013-04-20 07:47:26 +00:00
|
|
|
procstat_getfiles_sysctl(struct procstat *procstat, struct kinfo_proc *kp,
|
|
|
|
int mmapped)
|
2011-05-12 10:11:39 +00:00
|
|
|
{
|
|
|
|
struct kinfo_file *kif, *files;
|
|
|
|
struct kinfo_vmentry *kve, *vmentries;
|
|
|
|
struct filestat_list *head;
|
|
|
|
struct filestat *entry;
|
|
|
|
char *path;
|
|
|
|
off_t offset;
|
|
|
|
int cnt, fd, fflags;
|
|
|
|
int i, type, uflags;
|
|
|
|
int refcount;
|
2011-08-14 00:42:09 +00:00
|
|
|
cap_rights_t cap_rights;
|
2011-05-12 10:11:39 +00:00
|
|
|
|
|
|
|
assert(kp);
|
2021-12-02 18:02:26 +00:00
|
|
|
switch (procstat->type) {
|
2013-04-20 07:47:26 +00:00
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
files = kinfo_getfile(kp->ki_pid, &cnt);
|
|
|
|
break;
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
files = kinfo_getfile_core(procstat->core, &cnt);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
assert(!"invalid type");
|
|
|
|
}
|
2011-05-12 10:11:39 +00:00
|
|
|
if (files == NULL && errno != EPERM) {
|
|
|
|
warn("kinfo_getfile()");
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
procstat->files = files;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Allocate list head.
|
|
|
|
*/
|
|
|
|
head = malloc(sizeof(*head));
|
|
|
|
if (head == NULL)
|
|
|
|
return (NULL);
|
|
|
|
STAILQ_INIT(head);
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
|
|
kif = &files[i];
|
|
|
|
|
|
|
|
type = kinfo_type2fst(kif->kf_type);
|
|
|
|
fd = kif->kf_fd >= 0 ? kif->kf_fd : -1;
|
|
|
|
fflags = kinfo_fflags2fst(kif->kf_flags);
|
|
|
|
uflags = kinfo_uflags2fst(kif->kf_fd);
|
|
|
|
refcount = kif->kf_ref_count;
|
|
|
|
offset = kif->kf_offset;
|
|
|
|
if (*kif->kf_path != '\0')
|
|
|
|
path = strdup(kif->kf_path);
|
|
|
|
else
|
|
|
|
path = NULL;
|
2011-08-14 00:42:09 +00:00
|
|
|
cap_rights = kif->kf_cap_rights;
|
2011-05-12 10:11:39 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Create filestat entry.
|
|
|
|
*/
|
|
|
|
entry = filestat_new_entry(kif, type, fd, fflags, uflags,
|
Change the cap_rights_t type from uint64_t to a structure that we can extend
in the future in a backward compatible (API and ABI) way.
The cap_rights_t represents capability rights. We used to use one bit to
represent one right, but we are running out of spare bits. Currently the new
structure provides place for 114 rights (so 50 more than the previous
cap_rights_t), but it is possible to grow the structure to hold at least 285
rights, although we can make it even larger if 285 rights won't be enough.
The structure definition looks like this:
struct cap_rights {
uint64_t cr_rights[CAP_RIGHTS_VERSION + 2];
};
The initial CAP_RIGHTS_VERSION is 0.
The top two bits in the first element of the cr_rights[] array contain total
number of elements in the array - 2. This means if those two bits are equal to
0, we have 2 array elements.
The top two bits in all remaining array elements should be 0.
The next five bits in all array elements contain array index. Only one bit is
used and bit position in this five-bits range defines array index. This means
there can be at most five array elements in the future.
To define new right the CAPRIGHT() macro must be used. The macro takes two
arguments - an array index and a bit to set, eg.
#define CAP_PDKILL CAPRIGHT(1, 0x0000000000000800ULL)
We still support aliases that combine few rights, but the rights have to belong
to the same array element, eg:
#define CAP_LOOKUP CAPRIGHT(0, 0x0000000000000400ULL)
#define CAP_FCHMOD CAPRIGHT(0, 0x0000000000002000ULL)
#define CAP_FCHMODAT (CAP_FCHMOD | CAP_LOOKUP)
There is new API to manage the new cap_rights_t structure:
cap_rights_t *cap_rights_init(cap_rights_t *rights, ...);
void cap_rights_set(cap_rights_t *rights, ...);
void cap_rights_clear(cap_rights_t *rights, ...);
bool cap_rights_is_set(const cap_rights_t *rights, ...);
bool cap_rights_is_valid(const cap_rights_t *rights);
void cap_rights_merge(cap_rights_t *dst, const cap_rights_t *src);
void cap_rights_remove(cap_rights_t *dst, const cap_rights_t *src);
bool cap_rights_contains(const cap_rights_t *big, const cap_rights_t *little);
Capability rights to the cap_rights_init(), cap_rights_set(),
cap_rights_clear() and cap_rights_is_set() functions are provided by
separating them with commas, eg:
cap_rights_t rights;
cap_rights_init(&rights, CAP_READ, CAP_WRITE, CAP_FSTAT);
There is no need to terminate the list of rights, as those functions are
actually macros that take care of the termination, eg:
#define cap_rights_set(rights, ...) \
__cap_rights_set((rights), __VA_ARGS__, 0ULL)
void __cap_rights_set(cap_rights_t *rights, ...);
Thanks to using one bit as an array index we can assert in those functions that
there are no two rights belonging to different array elements provided
together. For example this is illegal and will be detected, because CAP_LOOKUP
belongs to element 0 and CAP_PDKILL to element 1:
cap_rights_init(&rights, CAP_LOOKUP | CAP_PDKILL);
Providing several rights that belongs to the same array's element this way is
correct, but is not advised. It should only be used for aliases definition.
This commit also breaks compatibility with some existing Capsicum system calls,
but I see no other way to do that. This should be fine as Capsicum is still
experimental and this change is not going to 9.x.
Sponsored by: The FreeBSD Foundation
2013-09-05 00:09:56 +00:00
|
|
|
refcount, offset, path, &cap_rights);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
|
|
|
if (mmapped != 0) {
|
2013-04-20 07:49:35 +00:00
|
|
|
vmentries = procstat_getvmmap(procstat, kp, &cnt);
|
2011-05-12 10:11:39 +00:00
|
|
|
procstat->vmentries = vmentries;
|
|
|
|
if (vmentries == NULL || cnt == 0)
|
|
|
|
goto fail;
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
|
|
kve = &vmentries[i];
|
|
|
|
if (kve->kve_type != KVME_TYPE_VNODE)
|
|
|
|
continue;
|
|
|
|
fflags = 0;
|
|
|
|
if (kve->kve_protection & KVME_PROT_READ)
|
|
|
|
fflags = PS_FST_FFLAG_READ;
|
2011-06-18 23:01:26 +00:00
|
|
|
if ((kve->kve_flags & KVME_FLAG_COW) == 0 &&
|
|
|
|
kve->kve_protection & KVME_PROT_WRITE)
|
2011-05-12 10:11:39 +00:00
|
|
|
fflags |= PS_FST_FFLAG_WRITE;
|
|
|
|
offset = kve->kve_offset;
|
|
|
|
refcount = kve->kve_ref_count;
|
|
|
|
if (*kve->kve_path != '\0')
|
|
|
|
path = strdup(kve->kve_path);
|
|
|
|
else
|
|
|
|
path = NULL;
|
|
|
|
entry = filestat_new_entry(kve, PS_FST_TYPE_VNODE, -1,
|
2011-08-14 00:42:09 +00:00
|
|
|
fflags, PS_FST_UFLAG_MMAP, refcount, offset, path,
|
2013-10-09 20:58:50 +00:00
|
|
|
NULL);
|
2011-05-12 10:11:39 +00:00
|
|
|
if (entry != NULL)
|
|
|
|
STAILQ_INSERT_TAIL(head, entry, next);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
fail:
|
|
|
|
return (head);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_get_pipe_info(struct procstat *procstat, struct filestat *fst,
|
|
|
|
struct pipestat *ps, char *errbuf)
|
|
|
|
{
|
|
|
|
|
|
|
|
assert(ps);
|
|
|
|
if (procstat->type == PROCSTAT_KVM) {
|
|
|
|
return (procstat_get_pipe_info_kvm(procstat->kd, fst, ps,
|
|
|
|
errbuf));
|
2013-04-20 07:47:26 +00:00
|
|
|
} else if (procstat->type == PROCSTAT_SYSCTL ||
|
|
|
|
procstat->type == PROCSTAT_CORE) {
|
2011-05-12 10:11:39 +00:00
|
|
|
return (procstat_get_pipe_info_sysctl(fst, ps, errbuf));
|
|
|
|
} else {
|
2011-06-18 22:16:55 +00:00
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_pipe_info_kvm(kvm_t *kd, struct filestat *fst,
|
|
|
|
struct pipestat *ps, char *errbuf)
|
|
|
|
{
|
|
|
|
struct pipe pi;
|
|
|
|
void *pipep;
|
|
|
|
|
|
|
|
assert(kd);
|
|
|
|
assert(ps);
|
|
|
|
assert(fst);
|
|
|
|
bzero(ps, sizeof(*ps));
|
|
|
|
pipep = fst->fs_typedep;
|
|
|
|
if (pipep == NULL)
|
|
|
|
goto fail;
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)pipep, &pi, sizeof(struct pipe))) {
|
|
|
|
warnx("can't read pipe at %p", (void *)pipep);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
ps->addr = (uintptr_t)pipep;
|
|
|
|
ps->peer = (uintptr_t)pi.pipe_peer;
|
|
|
|
ps->buffer_cnt = pi.pipe_buffer.cnt;
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail:
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_pipe_info_sysctl(struct filestat *fst, struct pipestat *ps,
|
|
|
|
char *errbuf __unused)
|
|
|
|
{
|
|
|
|
struct kinfo_file *kif;
|
|
|
|
|
|
|
|
assert(ps);
|
|
|
|
assert(fst);
|
|
|
|
bzero(ps, sizeof(*ps));
|
|
|
|
kif = fst->fs_typedep;
|
|
|
|
if (kif == NULL)
|
|
|
|
return (1);
|
|
|
|
ps->addr = kif->kf_un.kf_pipe.kf_pipe_addr;
|
|
|
|
ps->peer = kif->kf_un.kf_pipe.kf_pipe_peer;
|
|
|
|
ps->buffer_cnt = kif->kf_un.kf_pipe.kf_pipe_buffer_cnt;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_get_pts_info(struct procstat *procstat, struct filestat *fst,
|
|
|
|
struct ptsstat *pts, char *errbuf)
|
|
|
|
{
|
|
|
|
|
|
|
|
assert(pts);
|
|
|
|
if (procstat->type == PROCSTAT_KVM) {
|
|
|
|
return (procstat_get_pts_info_kvm(procstat->kd, fst, pts,
|
|
|
|
errbuf));
|
2013-04-20 07:47:26 +00:00
|
|
|
} else if (procstat->type == PROCSTAT_SYSCTL ||
|
|
|
|
procstat->type == PROCSTAT_CORE) {
|
2011-05-12 10:11:39 +00:00
|
|
|
return (procstat_get_pts_info_sysctl(fst, pts, errbuf));
|
|
|
|
} else {
|
2011-06-18 22:16:55 +00:00
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_pts_info_kvm(kvm_t *kd, struct filestat *fst,
|
|
|
|
struct ptsstat *pts, char *errbuf)
|
|
|
|
{
|
|
|
|
struct tty tty;
|
|
|
|
void *ttyp;
|
|
|
|
|
|
|
|
assert(kd);
|
|
|
|
assert(pts);
|
|
|
|
assert(fst);
|
|
|
|
bzero(pts, sizeof(*pts));
|
|
|
|
ttyp = fst->fs_typedep;
|
|
|
|
if (ttyp == NULL)
|
|
|
|
goto fail;
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)ttyp, &tty, sizeof(struct tty))) {
|
|
|
|
warnx("can't read tty at %p", (void *)ttyp);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
pts->dev = dev2udev(kd, tty.t_dev);
|
|
|
|
(void)kdevtoname(kd, tty.t_dev, pts->devname);
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail:
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_pts_info_sysctl(struct filestat *fst, struct ptsstat *pts,
|
|
|
|
char *errbuf __unused)
|
|
|
|
{
|
|
|
|
struct kinfo_file *kif;
|
|
|
|
|
|
|
|
assert(pts);
|
|
|
|
assert(fst);
|
|
|
|
bzero(pts, sizeof(*pts));
|
|
|
|
kif = fst->fs_typedep;
|
|
|
|
if (kif == NULL)
|
|
|
|
return (0);
|
|
|
|
pts->dev = kif->kf_un.kf_pts.kf_pts_dev;
|
|
|
|
strlcpy(pts->devname, kif->kf_path, sizeof(pts->devname));
|
|
|
|
return (0);
|
2012-04-01 18:22:48 +00:00
|
|
|
}
|
|
|
|
|
2013-05-03 21:11:57 +00:00
|
|
|
int
|
|
|
|
procstat_get_sem_info(struct procstat *procstat, struct filestat *fst,
|
|
|
|
struct semstat *sem, char *errbuf)
|
|
|
|
{
|
|
|
|
|
|
|
|
assert(sem);
|
|
|
|
if (procstat->type == PROCSTAT_KVM) {
|
|
|
|
return (procstat_get_sem_info_kvm(procstat->kd, fst, sem,
|
|
|
|
errbuf));
|
|
|
|
} else if (procstat->type == PROCSTAT_SYSCTL ||
|
|
|
|
procstat->type == PROCSTAT_CORE) {
|
|
|
|
return (procstat_get_sem_info_sysctl(fst, sem, errbuf));
|
|
|
|
} else {
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2013-05-03 21:11:57 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_sem_info_kvm(kvm_t *kd, struct filestat *fst,
|
|
|
|
struct semstat *sem, char *errbuf)
|
|
|
|
{
|
|
|
|
struct ksem ksem;
|
|
|
|
void *ksemp;
|
|
|
|
char *path;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
assert(kd);
|
|
|
|
assert(sem);
|
|
|
|
assert(fst);
|
|
|
|
bzero(sem, sizeof(*sem));
|
|
|
|
ksemp = fst->fs_typedep;
|
|
|
|
if (ksemp == NULL)
|
|
|
|
goto fail;
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)ksemp, &ksem,
|
|
|
|
sizeof(struct ksem))) {
|
|
|
|
warnx("can't read ksem at %p", (void *)ksemp);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
sem->mode = S_IFREG | ksem.ks_mode;
|
|
|
|
sem->value = ksem.ks_value;
|
|
|
|
if (fst->fs_path == NULL && ksem.ks_path != NULL) {
|
|
|
|
path = malloc(MAXPATHLEN);
|
|
|
|
for (i = 0; i < MAXPATHLEN - 1; i++) {
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)ksem.ks_path + i,
|
|
|
|
path + i, 1))
|
|
|
|
break;
|
|
|
|
if (path[i] == '\0')
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
path[i] = '\0';
|
|
|
|
if (i == 0)
|
|
|
|
free(path);
|
|
|
|
else
|
|
|
|
fst->fs_path = path;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail:
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2013-05-03 21:11:57 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_sem_info_sysctl(struct filestat *fst, struct semstat *sem,
|
|
|
|
char *errbuf __unused)
|
|
|
|
{
|
|
|
|
struct kinfo_file *kif;
|
|
|
|
|
|
|
|
assert(sem);
|
|
|
|
assert(fst);
|
|
|
|
bzero(sem, sizeof(*sem));
|
|
|
|
kif = fst->fs_typedep;
|
|
|
|
if (kif == NULL)
|
|
|
|
return (0);
|
|
|
|
sem->value = kif->kf_un.kf_sem.kf_sem_value;
|
|
|
|
sem->mode = kif->kf_un.kf_sem.kf_sem_mode;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2012-04-01 18:22:48 +00:00
|
|
|
int
|
|
|
|
procstat_get_shm_info(struct procstat *procstat, struct filestat *fst,
|
|
|
|
struct shmstat *shm, char *errbuf)
|
|
|
|
{
|
|
|
|
|
|
|
|
assert(shm);
|
|
|
|
if (procstat->type == PROCSTAT_KVM) {
|
|
|
|
return (procstat_get_shm_info_kvm(procstat->kd, fst, shm,
|
|
|
|
errbuf));
|
2013-04-20 07:47:26 +00:00
|
|
|
} else if (procstat->type == PROCSTAT_SYSCTL ||
|
|
|
|
procstat->type == PROCSTAT_CORE) {
|
2012-04-01 18:22:48 +00:00
|
|
|
return (procstat_get_shm_info_sysctl(fst, shm, errbuf));
|
|
|
|
} else {
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2012-04-01 18:22:48 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_shm_info_kvm(kvm_t *kd, struct filestat *fst,
|
|
|
|
struct shmstat *shm, char *errbuf)
|
|
|
|
{
|
|
|
|
struct shmfd shmfd;
|
|
|
|
void *shmfdp;
|
2012-06-07 15:54:52 +00:00
|
|
|
char *path;
|
|
|
|
int i;
|
2012-04-01 18:22:48 +00:00
|
|
|
|
|
|
|
assert(kd);
|
|
|
|
assert(shm);
|
|
|
|
assert(fst);
|
|
|
|
bzero(shm, sizeof(*shm));
|
|
|
|
shmfdp = fst->fs_typedep;
|
|
|
|
if (shmfdp == NULL)
|
|
|
|
goto fail;
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)shmfdp, &shmfd,
|
|
|
|
sizeof(struct shmfd))) {
|
|
|
|
warnx("can't read shmfd at %p", (void *)shmfdp);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
shm->mode = S_IFREG | shmfd.shm_mode;
|
|
|
|
shm->size = shmfd.shm_size;
|
2012-06-07 15:54:52 +00:00
|
|
|
if (fst->fs_path == NULL && shmfd.shm_path != NULL) {
|
|
|
|
path = malloc(MAXPATHLEN);
|
|
|
|
for (i = 0; i < MAXPATHLEN - 1; i++) {
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)shmfd.shm_path + i,
|
|
|
|
path + i, 1))
|
|
|
|
break;
|
|
|
|
if (path[i] == '\0')
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
path[i] = '\0';
|
|
|
|
if (i == 0)
|
|
|
|
free(path);
|
|
|
|
else
|
|
|
|
fst->fs_path = path;
|
|
|
|
}
|
2012-04-01 18:22:48 +00:00
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail:
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2012-04-01 18:22:48 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_shm_info_sysctl(struct filestat *fst, struct shmstat *shm,
|
|
|
|
char *errbuf __unused)
|
|
|
|
{
|
|
|
|
struct kinfo_file *kif;
|
|
|
|
|
|
|
|
assert(shm);
|
|
|
|
assert(fst);
|
|
|
|
bzero(shm, sizeof(*shm));
|
|
|
|
kif = fst->fs_typedep;
|
|
|
|
if (kif == NULL)
|
|
|
|
return (0);
|
|
|
|
shm->size = kif->kf_un.kf_file.kf_file_size;
|
|
|
|
shm->mode = kif->kf_un.kf_file.kf_file_mode;
|
|
|
|
return (0);
|
2011-05-12 10:11:39 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_get_vnode_info(struct procstat *procstat, struct filestat *fst,
|
|
|
|
struct vnstat *vn, char *errbuf)
|
|
|
|
{
|
|
|
|
|
|
|
|
assert(vn);
|
|
|
|
if (procstat->type == PROCSTAT_KVM) {
|
|
|
|
return (procstat_get_vnode_info_kvm(procstat->kd, fst, vn,
|
|
|
|
errbuf));
|
2013-04-20 07:47:26 +00:00
|
|
|
} else if (procstat->type == PROCSTAT_SYSCTL ||
|
|
|
|
procstat->type == PROCSTAT_CORE) {
|
2011-05-12 10:11:39 +00:00
|
|
|
return (procstat_get_vnode_info_sysctl(fst, vn, errbuf));
|
|
|
|
} else {
|
2011-06-18 22:16:55 +00:00
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_vnode_info_kvm(kvm_t *kd, struct filestat *fst,
|
|
|
|
struct vnstat *vn, char *errbuf)
|
|
|
|
{
|
|
|
|
/* Filesystem specific handlers. */
|
|
|
|
#define FSTYPE(fst) {#fst, fst##_filestat}
|
|
|
|
struct {
|
|
|
|
const char *tag;
|
|
|
|
int (*handler)(kvm_t *kd, struct vnode *vp,
|
|
|
|
struct vnstat *vn);
|
|
|
|
} fstypes[] = {
|
|
|
|
FSTYPE(devfs),
|
|
|
|
FSTYPE(isofs),
|
|
|
|
FSTYPE(msdosfs),
|
|
|
|
FSTYPE(nfs),
|
2013-06-28 21:00:08 +00:00
|
|
|
FSTYPE(smbfs),
|
2011-05-12 10:11:39 +00:00
|
|
|
FSTYPE(udf),
|
|
|
|
FSTYPE(ufs),
|
2011-05-12 22:21:39 +00:00
|
|
|
#ifdef LIBPROCSTAT_ZFS
|
2011-05-12 10:11:39 +00:00
|
|
|
FSTYPE(zfs),
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
#define NTYPES (sizeof(fstypes) / sizeof(*fstypes))
|
|
|
|
struct vnode vnode;
|
|
|
|
char tagstr[12];
|
|
|
|
void *vp;
|
2015-06-01 06:05:53 +00:00
|
|
|
int error;
|
2011-05-12 10:11:39 +00:00
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
assert(kd);
|
|
|
|
assert(vn);
|
|
|
|
assert(fst);
|
|
|
|
vp = fst->fs_typedep;
|
|
|
|
if (vp == NULL)
|
|
|
|
goto fail;
|
|
|
|
error = kvm_read_all(kd, (unsigned long)vp, &vnode, sizeof(vnode));
|
|
|
|
if (error == 0) {
|
|
|
|
warnx("can't read vnode at %p", (void *)vp);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
bzero(vn, sizeof(*vn));
|
|
|
|
vn->vn_type = vntype2psfsttype(vnode.v_type);
|
|
|
|
if (vnode.v_type == VNON || vnode.v_type == VBAD)
|
|
|
|
return (0);
|
2020-01-07 05:33:33 +00:00
|
|
|
error = kvm_read_all(kd, (unsigned long)vnode.v_lock.lock_object.lo_name,
|
|
|
|
tagstr, sizeof(tagstr));
|
2011-05-12 10:11:39 +00:00
|
|
|
if (error == 0) {
|
2020-01-07 05:33:33 +00:00
|
|
|
warnx("can't read lo_name at %p", (void *)vp);
|
2011-05-12 10:11:39 +00:00
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
tagstr[sizeof(tagstr) - 1] = '\0';
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Find appropriate handler.
|
|
|
|
*/
|
2015-06-01 06:05:53 +00:00
|
|
|
for (i = 0; i < NTYPES; i++)
|
2011-05-12 10:11:39 +00:00
|
|
|
if (!strcmp(fstypes[i].tag, tagstr)) {
|
|
|
|
if (fstypes[i].handler(kd, &vnode, vn) != 0) {
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == NTYPES) {
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "?(%s)", tagstr);
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
vn->vn_mntdir = getmnton(kd, vnode.v_mount);
|
|
|
|
if ((vnode.v_type == VBLK || vnode.v_type == VCHR) &&
|
|
|
|
vnode.v_rdev != NULL){
|
|
|
|
vn->vn_dev = dev2udev(kd, vnode.v_rdev);
|
|
|
|
(void)kdevtoname(kd, vnode.v_rdev, vn->vn_devname);
|
|
|
|
} else {
|
|
|
|
vn->vn_dev = -1;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail:
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* kinfo vnode type to filestat translation.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
kinfo_vtype2fst(int kfvtype)
|
|
|
|
{
|
|
|
|
static struct {
|
|
|
|
int kf_vtype;
|
|
|
|
int fst_vtype;
|
|
|
|
} kfvtypes2fst[] = {
|
|
|
|
{ KF_VTYPE_VBAD, PS_FST_VTYPE_VBAD },
|
|
|
|
{ KF_VTYPE_VBLK, PS_FST_VTYPE_VBLK },
|
|
|
|
{ KF_VTYPE_VCHR, PS_FST_VTYPE_VCHR },
|
|
|
|
{ KF_VTYPE_VDIR, PS_FST_VTYPE_VDIR },
|
|
|
|
{ KF_VTYPE_VFIFO, PS_FST_VTYPE_VFIFO },
|
|
|
|
{ KF_VTYPE_VLNK, PS_FST_VTYPE_VLNK },
|
|
|
|
{ KF_VTYPE_VNON, PS_FST_VTYPE_VNON },
|
|
|
|
{ KF_VTYPE_VREG, PS_FST_VTYPE_VREG },
|
|
|
|
{ KF_VTYPE_VSOCK, PS_FST_VTYPE_VSOCK }
|
|
|
|
};
|
|
|
|
#define NKFVTYPES (sizeof(kfvtypes2fst) / sizeof(*kfvtypes2fst))
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
for (i = 0; i < NKFVTYPES; i++)
|
|
|
|
if (kfvtypes2fst[i].kf_vtype == kfvtype)
|
|
|
|
break;
|
|
|
|
if (i == NKFVTYPES)
|
|
|
|
return (PS_FST_VTYPE_UNKNOWN);
|
|
|
|
return (kfvtypes2fst[i].fst_vtype);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_vnode_info_sysctl(struct filestat *fst, struct vnstat *vn,
|
|
|
|
char *errbuf)
|
|
|
|
{
|
|
|
|
struct statfs stbuf;
|
|
|
|
struct kinfo_file *kif;
|
|
|
|
struct kinfo_vmentry *kve;
|
Commit the 64-bit inode project.
Extend the ino_t, dev_t, nlink_t types to 64-bit ints. Modify
struct dirent layout to add d_off, increase the size of d_fileno
to 64-bits, increase the size of d_namlen to 16-bits, and change
the required alignment. Increase struct statfs f_mntfromname[] and
f_mntonname[] array length MNAMELEN to 1024.
ABI breakage is mitigated by providing compatibility using versioned
symbols, ingenious use of the existing padding in structures, and
by employing other tricks. Unfortunately, not everything can be
fixed, especially outside the base system. For instance, third-party
APIs which pass struct stat around are broken in backward and
forward incompatible ways.
Kinfo sysctl MIBs ABI is changed in backward-compatible way, but
there is no general mechanism to handle other sysctl MIBS which
return structures where the layout has changed. It was considered
that the breakage is either in the management interfaces, where we
usually allow ABI slip, or is not important.
Struct xvnode changed layout, no compat shims are provided.
For struct xtty, dev_t tty device member was reduced to uint32_t.
It was decided that keeping ABI compat in this case is more useful
than reporting 64-bit dev_t, for the sake of pstat.
Update note: strictly follow the instructions in UPDATING. Build
and install the new kernel with COMPAT_FREEBSD11 option enabled,
then reboot, and only then install new world.
Credits: The 64-bit inode project, also known as ino64, started life
many years ago as a project by Gleb Kurtsou (gleb). Kirk McKusick
(mckusick) then picked up and updated the patch, and acted as a
flag-waver. Feedback, suggestions, and discussions were carried
by Ed Maste (emaste), John Baldwin (jhb), Jilles Tjoelker (jilles),
and Rick Macklem (rmacklem). Kris Moore (kris) performed an initial
ports investigation followed by an exp-run by Antoine Brodin (antoine).
Essential and all-embracing testing was done by Peter Holm (pho).
The heavy lifting of coordinating all these efforts and bringing the
project to completion were done by Konstantin Belousov (kib).
Sponsored by: The FreeBSD Foundation (emaste, kib)
Differential revision: https://reviews.freebsd.org/D10439
2017-05-23 09:29:05 +00:00
|
|
|
char *name, *path;
|
2011-05-12 10:11:39 +00:00
|
|
|
uint64_t fileid;
|
|
|
|
uint64_t size;
|
Commit the 64-bit inode project.
Extend the ino_t, dev_t, nlink_t types to 64-bit ints. Modify
struct dirent layout to add d_off, increase the size of d_fileno
to 64-bits, increase the size of d_namlen to 16-bits, and change
the required alignment. Increase struct statfs f_mntfromname[] and
f_mntonname[] array length MNAMELEN to 1024.
ABI breakage is mitigated by providing compatibility using versioned
symbols, ingenious use of the existing padding in structures, and
by employing other tricks. Unfortunately, not everything can be
fixed, especially outside the base system. For instance, third-party
APIs which pass struct stat around are broken in backward and
forward incompatible ways.
Kinfo sysctl MIBs ABI is changed in backward-compatible way, but
there is no general mechanism to handle other sysctl MIBS which
return structures where the layout has changed. It was considered
that the breakage is either in the management interfaces, where we
usually allow ABI slip, or is not important.
Struct xvnode changed layout, no compat shims are provided.
For struct xtty, dev_t tty device member was reduced to uint32_t.
It was decided that keeping ABI compat in this case is more useful
than reporting 64-bit dev_t, for the sake of pstat.
Update note: strictly follow the instructions in UPDATING. Build
and install the new kernel with COMPAT_FREEBSD11 option enabled,
then reboot, and only then install new world.
Credits: The 64-bit inode project, also known as ino64, started life
many years ago as a project by Gleb Kurtsou (gleb). Kirk McKusick
(mckusick) then picked up and updated the patch, and acted as a
flag-waver. Feedback, suggestions, and discussions were carried
by Ed Maste (emaste), John Baldwin (jhb), Jilles Tjoelker (jilles),
and Rick Macklem (rmacklem). Kris Moore (kris) performed an initial
ports investigation followed by an exp-run by Antoine Brodin (antoine).
Essential and all-embracing testing was done by Peter Holm (pho).
The heavy lifting of coordinating all these efforts and bringing the
project to completion were done by Konstantin Belousov (kib).
Sponsored by: The FreeBSD Foundation (emaste, kib)
Differential revision: https://reviews.freebsd.org/D10439
2017-05-23 09:29:05 +00:00
|
|
|
uint64_t fsid;
|
|
|
|
uint64_t rdev;
|
2011-05-12 10:11:39 +00:00
|
|
|
uint16_t mode;
|
|
|
|
int vntype;
|
|
|
|
int status;
|
|
|
|
|
|
|
|
assert(fst);
|
|
|
|
assert(vn);
|
|
|
|
bzero(vn, sizeof(*vn));
|
|
|
|
if (fst->fs_typedep == NULL)
|
|
|
|
return (1);
|
|
|
|
if (fst->fs_uflags & PS_FST_UFLAG_MMAP) {
|
|
|
|
kve = fst->fs_typedep;
|
|
|
|
fileid = kve->kve_vn_fileid;
|
|
|
|
fsid = kve->kve_vn_fsid;
|
|
|
|
mode = kve->kve_vn_mode;
|
|
|
|
path = kve->kve_path;
|
|
|
|
rdev = kve->kve_vn_rdev;
|
|
|
|
size = kve->kve_vn_size;
|
|
|
|
vntype = kinfo_vtype2fst(kve->kve_vn_type);
|
|
|
|
status = kve->kve_status;
|
|
|
|
} else {
|
|
|
|
kif = fst->fs_typedep;
|
|
|
|
fileid = kif->kf_un.kf_file.kf_file_fileid;
|
|
|
|
fsid = kif->kf_un.kf_file.kf_file_fsid;
|
|
|
|
mode = kif->kf_un.kf_file.kf_file_mode;
|
|
|
|
path = kif->kf_path;
|
|
|
|
rdev = kif->kf_un.kf_file.kf_file_rdev;
|
|
|
|
size = kif->kf_un.kf_file.kf_file_size;
|
|
|
|
vntype = kinfo_vtype2fst(kif->kf_vnode_type);
|
|
|
|
status = kif->kf_status;
|
|
|
|
}
|
|
|
|
vn->vn_type = vntype;
|
|
|
|
if (vntype == PS_FST_VTYPE_VNON || vntype == PS_FST_VTYPE_VBAD)
|
|
|
|
return (0);
|
|
|
|
if ((status & KF_ATTR_VALID) == 0) {
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL) {
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX,
|
|
|
|
"? (no info available)");
|
|
|
|
}
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
if (path && *path) {
|
|
|
|
statfs(path, &stbuf);
|
|
|
|
vn->vn_mntdir = strdup(stbuf.f_mntonname);
|
|
|
|
} else
|
|
|
|
vn->vn_mntdir = strdup("-");
|
|
|
|
vn->vn_dev = rdev;
|
|
|
|
if (vntype == PS_FST_VTYPE_VBLK) {
|
|
|
|
name = devname(rdev, S_IFBLK);
|
|
|
|
if (name != NULL)
|
|
|
|
strlcpy(vn->vn_devname, name,
|
|
|
|
sizeof(vn->vn_devname));
|
|
|
|
} else if (vntype == PS_FST_VTYPE_VCHR) {
|
|
|
|
name = devname(vn->vn_dev, S_IFCHR);
|
|
|
|
if (name != NULL)
|
|
|
|
strlcpy(vn->vn_devname, name,
|
|
|
|
sizeof(vn->vn_devname));
|
|
|
|
}
|
|
|
|
vn->vn_fsid = fsid;
|
|
|
|
vn->vn_fileid = fileid;
|
|
|
|
vn->vn_size = size;
|
|
|
|
vn->vn_mode = mode;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_get_socket_info(struct procstat *procstat, struct filestat *fst,
|
|
|
|
struct sockstat *sock, char *errbuf)
|
|
|
|
{
|
|
|
|
|
|
|
|
assert(sock);
|
|
|
|
if (procstat->type == PROCSTAT_KVM) {
|
|
|
|
return (procstat_get_socket_info_kvm(procstat->kd, fst, sock,
|
|
|
|
errbuf));
|
2013-04-20 07:47:26 +00:00
|
|
|
} else if (procstat->type == PROCSTAT_SYSCTL ||
|
|
|
|
procstat->type == PROCSTAT_CORE) {
|
2011-05-12 10:11:39 +00:00
|
|
|
return (procstat_get_socket_info_sysctl(fst, sock, errbuf));
|
|
|
|
} else {
|
2011-06-18 22:16:55 +00:00
|
|
|
warnx("unknown access method: %d", procstat->type);
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_socket_info_kvm(kvm_t *kd, struct filestat *fst,
|
|
|
|
struct sockstat *sock, char *errbuf)
|
|
|
|
{
|
|
|
|
struct domain dom;
|
|
|
|
struct inpcb inpcb;
|
|
|
|
struct protosw proto;
|
|
|
|
struct socket s;
|
|
|
|
struct unpcb unpcb;
|
|
|
|
ssize_t len;
|
|
|
|
void *so;
|
|
|
|
|
|
|
|
assert(kd);
|
|
|
|
assert(sock);
|
|
|
|
assert(fst);
|
|
|
|
bzero(sock, sizeof(*sock));
|
|
|
|
so = fst->fs_typedep;
|
|
|
|
if (so == NULL)
|
|
|
|
goto fail;
|
|
|
|
sock->so_addr = (uintptr_t)so;
|
|
|
|
/* fill in socket */
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)so, &s,
|
|
|
|
sizeof(struct socket))) {
|
|
|
|
warnx("can't read sock at %p", (void *)so);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
/* fill in protosw entry */
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)s.so_proto, &proto,
|
|
|
|
sizeof(struct protosw))) {
|
|
|
|
warnx("can't read protosw at %p", (void *)s.so_proto);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
/* fill in domain */
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)proto.pr_domain, &dom,
|
|
|
|
sizeof(struct domain))) {
|
|
|
|
warnx("can't read domain at %p",
|
|
|
|
(void *)proto.pr_domain);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if ((len = kvm_read(kd, (unsigned long)dom.dom_name, sock->dname,
|
|
|
|
sizeof(sock->dname) - 1)) < 0) {
|
|
|
|
warnx("can't read domain name at %p", (void *)dom.dom_name);
|
|
|
|
sock->dname[0] = '\0';
|
|
|
|
}
|
|
|
|
else
|
|
|
|
sock->dname[len] = '\0';
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fill in known data.
|
|
|
|
*/
|
|
|
|
sock->type = s.so_type;
|
|
|
|
sock->proto = proto.pr_protocol;
|
|
|
|
sock->dom_family = dom.dom_family;
|
|
|
|
sock->so_pcb = (uintptr_t)s.so_pcb;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Protocol specific data.
|
|
|
|
*/
|
|
|
|
switch(dom.dom_family) {
|
|
|
|
case AF_INET:
|
|
|
|
case AF_INET6:
|
|
|
|
if (proto.pr_protocol == IPPROTO_TCP) {
|
|
|
|
if (s.so_pcb) {
|
|
|
|
if (kvm_read(kd, (u_long)s.so_pcb,
|
|
|
|
(char *)&inpcb, sizeof(struct inpcb))
|
|
|
|
!= sizeof(struct inpcb)) {
|
|
|
|
warnx("can't read inpcb at %p",
|
|
|
|
(void *)s.so_pcb);
|
|
|
|
} else
|
|
|
|
sock->inp_ppcb =
|
|
|
|
(uintptr_t)inpcb.inp_ppcb;
|
2017-05-26 22:17:44 +00:00
|
|
|
sock->sendq = s.so_snd.sb_ccc;
|
|
|
|
sock->recvq = s.so_rcv.sb_ccc;
|
2011-05-12 10:11:39 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case AF_UNIX:
|
|
|
|
if (s.so_pcb) {
|
|
|
|
if (kvm_read(kd, (u_long)s.so_pcb, (char *)&unpcb,
|
|
|
|
sizeof(struct unpcb)) != sizeof(struct unpcb)){
|
|
|
|
warnx("can't read unpcb at %p",
|
|
|
|
(void *)s.so_pcb);
|
|
|
|
} else if (unpcb.unp_conn) {
|
|
|
|
sock->so_rcv_sb_state = s.so_rcv.sb_state;
|
|
|
|
sock->so_snd_sb_state = s.so_snd.sb_state;
|
|
|
|
sock->unp_conn = (uintptr_t)unpcb.unp_conn;
|
2017-05-26 22:17:44 +00:00
|
|
|
sock->sendq = s.so_snd.sb_ccc;
|
|
|
|
sock->recvq = s.so_rcv.sb_ccc;
|
2011-05-12 10:11:39 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
fail:
|
2013-05-08 19:11:47 +00:00
|
|
|
if (errbuf != NULL)
|
|
|
|
snprintf(errbuf, _POSIX2_LINE_MAX, "error");
|
2011-05-12 10:11:39 +00:00
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_get_socket_info_sysctl(struct filestat *fst, struct sockstat *sock,
|
|
|
|
char *errbuf __unused)
|
|
|
|
{
|
|
|
|
struct kinfo_file *kif;
|
|
|
|
|
|
|
|
assert(sock);
|
|
|
|
assert(fst);
|
|
|
|
bzero(sock, sizeof(*sock));
|
|
|
|
kif = fst->fs_typedep;
|
|
|
|
if (kif == NULL)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fill in known data.
|
|
|
|
*/
|
|
|
|
sock->type = kif->kf_sock_type;
|
|
|
|
sock->proto = kif->kf_sock_protocol;
|
|
|
|
sock->dom_family = kif->kf_sock_domain;
|
|
|
|
sock->so_pcb = kif->kf_un.kf_sock.kf_sock_pcb;
|
|
|
|
strlcpy(sock->dname, kif->kf_path, sizeof(sock->dname));
|
Commit the 64-bit inode project.
Extend the ino_t, dev_t, nlink_t types to 64-bit ints. Modify
struct dirent layout to add d_off, increase the size of d_fileno
to 64-bits, increase the size of d_namlen to 16-bits, and change
the required alignment. Increase struct statfs f_mntfromname[] and
f_mntonname[] array length MNAMELEN to 1024.
ABI breakage is mitigated by providing compatibility using versioned
symbols, ingenious use of the existing padding in structures, and
by employing other tricks. Unfortunately, not everything can be
fixed, especially outside the base system. For instance, third-party
APIs which pass struct stat around are broken in backward and
forward incompatible ways.
Kinfo sysctl MIBs ABI is changed in backward-compatible way, but
there is no general mechanism to handle other sysctl MIBS which
return structures where the layout has changed. It was considered
that the breakage is either in the management interfaces, where we
usually allow ABI slip, or is not important.
Struct xvnode changed layout, no compat shims are provided.
For struct xtty, dev_t tty device member was reduced to uint32_t.
It was decided that keeping ABI compat in this case is more useful
than reporting 64-bit dev_t, for the sake of pstat.
Update note: strictly follow the instructions in UPDATING. Build
and install the new kernel with COMPAT_FREEBSD11 option enabled,
then reboot, and only then install new world.
Credits: The 64-bit inode project, also known as ino64, started life
many years ago as a project by Gleb Kurtsou (gleb). Kirk McKusick
(mckusick) then picked up and updated the patch, and acted as a
flag-waver. Feedback, suggestions, and discussions were carried
by Ed Maste (emaste), John Baldwin (jhb), Jilles Tjoelker (jilles),
and Rick Macklem (rmacklem). Kris Moore (kris) performed an initial
ports investigation followed by an exp-run by Antoine Brodin (antoine).
Essential and all-embracing testing was done by Peter Holm (pho).
The heavy lifting of coordinating all these efforts and bringing the
project to completion were done by Konstantin Belousov (kib).
Sponsored by: The FreeBSD Foundation (emaste, kib)
Differential revision: https://reviews.freebsd.org/D10439
2017-05-23 09:29:05 +00:00
|
|
|
bcopy(&kif->kf_un.kf_sock.kf_sa_local, &sock->sa_local,
|
|
|
|
kif->kf_un.kf_sock.kf_sa_local.ss_len);
|
|
|
|
bcopy(&kif->kf_un.kf_sock.kf_sa_peer, &sock->sa_peer,
|
|
|
|
kif->kf_un.kf_sock.kf_sa_peer.ss_len);
|
2011-05-12 10:11:39 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Protocol specific data.
|
|
|
|
*/
|
|
|
|
switch(sock->dom_family) {
|
|
|
|
case AF_INET:
|
|
|
|
case AF_INET6:
|
2017-05-26 22:17:44 +00:00
|
|
|
if (sock->proto == IPPROTO_TCP) {
|
2011-05-12 10:11:39 +00:00
|
|
|
sock->inp_ppcb = kif->kf_un.kf_sock.kf_sock_inpcb;
|
2017-05-26 22:17:44 +00:00
|
|
|
sock->sendq = kif->kf_un.kf_sock.kf_sock_sendq;
|
|
|
|
sock->recvq = kif->kf_un.kf_sock.kf_sock_recvq;
|
|
|
|
}
|
2011-05-12 10:11:39 +00:00
|
|
|
break;
|
|
|
|
case AF_UNIX:
|
|
|
|
if (kif->kf_un.kf_sock.kf_sock_unpconn != 0) {
|
2017-05-26 22:17:44 +00:00
|
|
|
sock->so_rcv_sb_state =
|
|
|
|
kif->kf_un.kf_sock.kf_sock_rcv_sb_state;
|
|
|
|
sock->so_snd_sb_state =
|
|
|
|
kif->kf_un.kf_sock.kf_sock_snd_sb_state;
|
|
|
|
sock->unp_conn =
|
|
|
|
kif->kf_un.kf_sock.kf_sock_unpconn;
|
|
|
|
sock->sendq = kif->kf_un.kf_sock.kf_sock_sendq;
|
|
|
|
sock->recvq = kif->kf_un.kf_sock.kf_sock_recvq;
|
2011-05-12 10:11:39 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Descriptor flags to filestat translation.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
to_filestat_flags(int flags)
|
|
|
|
{
|
|
|
|
static struct {
|
|
|
|
int flag;
|
|
|
|
int fst_flag;
|
|
|
|
} fstflags[] = {
|
|
|
|
{ FREAD, PS_FST_FFLAG_READ },
|
|
|
|
{ FWRITE, PS_FST_FFLAG_WRITE },
|
|
|
|
{ O_APPEND, PS_FST_FFLAG_APPEND },
|
|
|
|
{ O_ASYNC, PS_FST_FFLAG_ASYNC },
|
|
|
|
{ O_CREAT, PS_FST_FFLAG_CREAT },
|
|
|
|
{ O_DIRECT, PS_FST_FFLAG_DIRECT },
|
|
|
|
{ O_EXCL, PS_FST_FFLAG_EXCL },
|
|
|
|
{ O_EXEC, PS_FST_FFLAG_EXEC },
|
|
|
|
{ O_EXLOCK, PS_FST_FFLAG_EXLOCK },
|
|
|
|
{ O_NOFOLLOW, PS_FST_FFLAG_NOFOLLOW },
|
|
|
|
{ O_NONBLOCK, PS_FST_FFLAG_NONBLOCK },
|
|
|
|
{ O_SHLOCK, PS_FST_FFLAG_SHLOCK },
|
|
|
|
{ O_SYNC, PS_FST_FFLAG_SYNC },
|
|
|
|
{ O_TRUNC, PS_FST_FFLAG_TRUNC }
|
|
|
|
};
|
|
|
|
#define NFSTFLAGS (sizeof(fstflags) / sizeof(*fstflags))
|
|
|
|
int fst_flags;
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
fst_flags = 0;
|
|
|
|
for (i = 0; i < NFSTFLAGS; i++)
|
|
|
|
if (flags & fstflags[i].flag)
|
|
|
|
fst_flags |= fstflags[i].fst_flag;
|
|
|
|
return (fst_flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Vnode type to filestate translation.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
vntype2psfsttype(int type)
|
|
|
|
{
|
|
|
|
static struct {
|
|
|
|
int vtype;
|
|
|
|
int fst_vtype;
|
|
|
|
} vt2fst[] = {
|
|
|
|
{ VBAD, PS_FST_VTYPE_VBAD },
|
|
|
|
{ VBLK, PS_FST_VTYPE_VBLK },
|
|
|
|
{ VCHR, PS_FST_VTYPE_VCHR },
|
|
|
|
{ VDIR, PS_FST_VTYPE_VDIR },
|
|
|
|
{ VFIFO, PS_FST_VTYPE_VFIFO },
|
|
|
|
{ VLNK, PS_FST_VTYPE_VLNK },
|
|
|
|
{ VNON, PS_FST_VTYPE_VNON },
|
|
|
|
{ VREG, PS_FST_VTYPE_VREG },
|
|
|
|
{ VSOCK, PS_FST_VTYPE_VSOCK }
|
|
|
|
};
|
|
|
|
#define NVFTYPES (sizeof(vt2fst) / sizeof(*vt2fst))
|
|
|
|
unsigned int i, fst_type;
|
|
|
|
|
|
|
|
fst_type = PS_FST_VTYPE_UNKNOWN;
|
|
|
|
for (i = 0; i < NVFTYPES; i++) {
|
|
|
|
if (type == vt2fst[i].vtype) {
|
|
|
|
fst_type = vt2fst[i].fst_vtype;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return (fst_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *
|
|
|
|
getmnton(kvm_t *kd, struct mount *m)
|
|
|
|
{
|
2011-06-18 13:56:33 +00:00
|
|
|
struct mount mnt;
|
2011-05-12 10:11:39 +00:00
|
|
|
static struct mtab {
|
|
|
|
struct mtab *next;
|
|
|
|
struct mount *m;
|
|
|
|
char mntonname[MNAMELEN + 1];
|
|
|
|
} *mhead = NULL;
|
|
|
|
struct mtab *mt;
|
|
|
|
|
|
|
|
for (mt = mhead; mt != NULL; mt = mt->next)
|
|
|
|
if (m == mt->m)
|
|
|
|
return (mt->mntonname);
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)m, &mnt, sizeof(struct mount))) {
|
|
|
|
warnx("can't read mount table at %p", (void *)m);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if ((mt = malloc(sizeof (struct mtab))) == NULL)
|
|
|
|
err(1, NULL);
|
|
|
|
mt->m = m;
|
|
|
|
bcopy(&mnt.mnt_stat.f_mntonname[0], &mt->mntonname[0], MNAMELEN);
|
2011-06-18 13:56:33 +00:00
|
|
|
mt->mntonname[MNAMELEN] = '\0';
|
2011-05-12 10:11:39 +00:00
|
|
|
mt->next = mhead;
|
|
|
|
mhead = mt;
|
|
|
|
return (mt->mntonname);
|
|
|
|
}
|
2013-04-20 07:47:26 +00:00
|
|
|
|
2013-04-20 08:07:04 +00:00
|
|
|
/*
|
|
|
|
* Auxiliary structures and functions to get process environment or
|
|
|
|
* command line arguments.
|
|
|
|
*/
|
|
|
|
struct argvec {
|
|
|
|
char *buf;
|
|
|
|
size_t bufsize;
|
|
|
|
char **argv;
|
|
|
|
size_t argc;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct argvec *
|
|
|
|
argvec_alloc(size_t bufsize)
|
|
|
|
{
|
|
|
|
struct argvec *av;
|
|
|
|
|
|
|
|
av = malloc(sizeof(*av));
|
|
|
|
if (av == NULL)
|
|
|
|
return (NULL);
|
|
|
|
av->bufsize = bufsize;
|
|
|
|
av->buf = malloc(av->bufsize);
|
|
|
|
if (av->buf == NULL) {
|
|
|
|
free(av);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
av->argc = 32;
|
|
|
|
av->argv = malloc(sizeof(char *) * av->argc);
|
|
|
|
if (av->argv == NULL) {
|
|
|
|
free(av->buf);
|
|
|
|
free(av);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
return av;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
argvec_free(struct argvec * av)
|
|
|
|
{
|
|
|
|
|
|
|
|
free(av->argv);
|
|
|
|
free(av->buf);
|
|
|
|
free(av);
|
|
|
|
}
|
|
|
|
|
|
|
|
static char **
|
|
|
|
getargv(struct procstat *procstat, struct kinfo_proc *kp, size_t nchr, int env)
|
|
|
|
{
|
|
|
|
int error, name[4], argc, i;
|
|
|
|
struct argvec *av, **avp;
|
|
|
|
enum psc_type type;
|
|
|
|
size_t len;
|
|
|
|
char *p, **argv;
|
|
|
|
|
|
|
|
assert(procstat);
|
|
|
|
assert(kp);
|
|
|
|
if (procstat->type == PROCSTAT_KVM) {
|
|
|
|
warnx("can't use kvm access method");
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if (procstat->type != PROCSTAT_SYSCTL &&
|
|
|
|
procstat->type != PROCSTAT_CORE) {
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (nchr == 0 || nchr > ARG_MAX)
|
|
|
|
nchr = ARG_MAX;
|
|
|
|
|
|
|
|
avp = (struct argvec **)(env ? &procstat->argv : &procstat->envv);
|
|
|
|
av = *avp;
|
|
|
|
|
|
|
|
if (av == NULL)
|
|
|
|
{
|
|
|
|
av = argvec_alloc(nchr);
|
|
|
|
if (av == NULL)
|
|
|
|
{
|
|
|
|
warn("malloc(%zu)", nchr);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
*avp = av;
|
|
|
|
} else if (av->bufsize < nchr) {
|
|
|
|
av->buf = reallocf(av->buf, nchr);
|
|
|
|
if (av->buf == NULL) {
|
|
|
|
warn("malloc(%zu)", nchr);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (procstat->type == PROCSTAT_SYSCTL) {
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = env ? KERN_PROC_ENV : KERN_PROC_ARGS;
|
|
|
|
name[3] = kp->ki_pid;
|
|
|
|
len = nchr;
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), av->buf, &len, NULL, 0);
|
2013-04-20 08:07:04 +00:00
|
|
|
if (error != 0 && errno != ESRCH && errno != EPERM)
|
|
|
|
warn("sysctl(kern.proc.%s)", env ? "env" : "args");
|
|
|
|
if (error != 0 || len == 0)
|
|
|
|
return (NULL);
|
|
|
|
} else /* procstat->type == PROCSTAT_CORE */ {
|
|
|
|
type = env ? PSC_TYPE_ENVV : PSC_TYPE_ARGV;
|
|
|
|
len = nchr;
|
|
|
|
if (procstat_core_get(procstat->core, type, av->buf, &len)
|
|
|
|
== NULL) {
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
argv = av->argv;
|
|
|
|
argc = av->argc;
|
|
|
|
i = 0;
|
|
|
|
for (p = av->buf; p < av->buf + len; p += strlen(p) + 1) {
|
|
|
|
argv[i++] = p;
|
|
|
|
if (i < argc)
|
|
|
|
continue;
|
|
|
|
/* Grow argv. */
|
|
|
|
argc += argc;
|
|
|
|
argv = realloc(argv, sizeof(char *) * argc);
|
|
|
|
if (argv == NULL) {
|
|
|
|
warn("malloc(%zu)", sizeof(char *) * argc);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
av->argv = argv;
|
|
|
|
av->argc = argc;
|
|
|
|
}
|
|
|
|
argv[i] = NULL;
|
|
|
|
|
|
|
|
return (argv);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return process command line arguments.
|
|
|
|
*/
|
|
|
|
char **
|
|
|
|
procstat_getargv(struct procstat *procstat, struct kinfo_proc *p, size_t nchr)
|
|
|
|
{
|
|
|
|
|
|
|
|
return (getargv(procstat, p, nchr, 0));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free the buffer allocated by procstat_getargv().
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
procstat_freeargv(struct procstat *procstat)
|
|
|
|
{
|
|
|
|
|
|
|
|
if (procstat->argv != NULL) {
|
|
|
|
argvec_free(procstat->argv);
|
|
|
|
procstat->argv = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Return process environment.
|
|
|
|
*/
|
|
|
|
char **
|
|
|
|
procstat_getenvv(struct procstat *procstat, struct kinfo_proc *p, size_t nchr)
|
|
|
|
{
|
|
|
|
|
|
|
|
return (getargv(procstat, p, nchr, 1));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Free the buffer allocated by procstat_getenvv().
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
procstat_freeenvv(struct procstat *procstat)
|
|
|
|
{
|
|
|
|
if (procstat->envv != NULL) {
|
|
|
|
argvec_free(procstat->envv);
|
|
|
|
procstat->envv = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-04-20 07:49:35 +00:00
|
|
|
static struct kinfo_vmentry *
|
|
|
|
kinfo_getvmmap_core(struct procstat_core *core, int *cntp)
|
|
|
|
{
|
|
|
|
int cnt;
|
|
|
|
size_t len;
|
|
|
|
char *buf, *bp, *eb;
|
|
|
|
struct kinfo_vmentry *kiv, *kp, *kv;
|
|
|
|
|
|
|
|
buf = procstat_core_get(core, PSC_TYPE_VMMAP, NULL, &len);
|
|
|
|
if (buf == NULL)
|
|
|
|
return (NULL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXXMG: The code below is just copy&past from libutil.
|
|
|
|
* The code duplication can be avoided if libutil
|
|
|
|
* is extended to provide something like:
|
|
|
|
* struct kinfo_vmentry *kinfo_getvmmap_from_buf(const char *buf,
|
|
|
|
* size_t len, int *cntp);
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* Pass 1: count items */
|
|
|
|
cnt = 0;
|
|
|
|
bp = buf;
|
|
|
|
eb = buf + len;
|
|
|
|
while (bp < eb) {
|
|
|
|
kv = (struct kinfo_vmentry *)(uintptr_t)bp;
|
Fix core corruption caused by race in note_procstat_vmmap
This fix is spiritually similar to r287442 and was discovered thanks to
the KASSERT added in that revision.
NT_PROCSTAT_VMMAP output length, when packing kinfo structs, is tied to
the length of filenames corresponding to vnodes in the process' vm map
via vn_fullpath. As vnodes may move during coredump, this is racy.
We do not remove the race, only prevent it from causing coredump
corruption.
- Add a sysctl, kern.coredump_pack_vmmapinfo, to allow users to disable
kinfo packing for PROCSTAT_VMMAP notes. This avoids VMMAP corruption
and truncation, even if names change, at the cost of up to PATH_MAX
bytes per mapped object. The new sysctl is documented in core.5.
- Fix note_procstat_vmmap to self-limit in the second pass. This
addresses corruption, at the cost of sometimes producing a truncated
result.
- Fix PROCSTAT_VMMAP consumers libutil (and libprocstat, via copy-paste)
to grok the new zero padding.
Reported by: pho (https://people.freebsd.org/~pho/stress/log/datamove4-2.txt)
Relnotes: yes
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3824
2015-10-06 18:07:00 +00:00
|
|
|
if (kv->kve_structsize == 0)
|
|
|
|
break;
|
2013-04-20 07:49:35 +00:00
|
|
|
bp += kv->kve_structsize;
|
|
|
|
cnt++;
|
|
|
|
}
|
|
|
|
|
|
|
|
kiv = calloc(cnt, sizeof(*kiv));
|
|
|
|
if (kiv == NULL) {
|
|
|
|
free(buf);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
bp = buf;
|
|
|
|
eb = buf + len;
|
|
|
|
kp = kiv;
|
|
|
|
/* Pass 2: unpack */
|
|
|
|
while (bp < eb) {
|
|
|
|
kv = (struct kinfo_vmentry *)(uintptr_t)bp;
|
Fix core corruption caused by race in note_procstat_vmmap
This fix is spiritually similar to r287442 and was discovered thanks to
the KASSERT added in that revision.
NT_PROCSTAT_VMMAP output length, when packing kinfo structs, is tied to
the length of filenames corresponding to vnodes in the process' vm map
via vn_fullpath. As vnodes may move during coredump, this is racy.
We do not remove the race, only prevent it from causing coredump
corruption.
- Add a sysctl, kern.coredump_pack_vmmapinfo, to allow users to disable
kinfo packing for PROCSTAT_VMMAP notes. This avoids VMMAP corruption
and truncation, even if names change, at the cost of up to PATH_MAX
bytes per mapped object. The new sysctl is documented in core.5.
- Fix note_procstat_vmmap to self-limit in the second pass. This
addresses corruption, at the cost of sometimes producing a truncated
result.
- Fix PROCSTAT_VMMAP consumers libutil (and libprocstat, via copy-paste)
to grok the new zero padding.
Reported by: pho (https://people.freebsd.org/~pho/stress/log/datamove4-2.txt)
Relnotes: yes
Sponsored by: EMC / Isilon Storage Division
Differential Revision: https://reviews.freebsd.org/D3824
2015-10-06 18:07:00 +00:00
|
|
|
if (kv->kve_structsize == 0)
|
|
|
|
break;
|
2013-04-20 07:49:35 +00:00
|
|
|
/* Copy/expand into pre-zeroed buffer */
|
|
|
|
memcpy(kp, kv, kv->kve_structsize);
|
|
|
|
/* Advance to next packed record */
|
|
|
|
bp += kv->kve_structsize;
|
|
|
|
/* Set field size to fixed length, advance */
|
|
|
|
kp->kve_structsize = sizeof(*kp);
|
|
|
|
kp++;
|
|
|
|
}
|
|
|
|
free(buf);
|
|
|
|
*cntp = cnt;
|
|
|
|
return (kiv); /* Caller must free() return value */
|
|
|
|
}
|
|
|
|
|
|
|
|
struct kinfo_vmentry *
|
|
|
|
procstat_getvmmap(struct procstat *procstat, struct kinfo_proc *kp,
|
|
|
|
unsigned int *cntp)
|
|
|
|
{
|
2013-04-20 08:17:20 +00:00
|
|
|
|
2013-04-20 07:49:35 +00:00
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
|
|
|
warnx("kvm method is not supported");
|
|
|
|
return (NULL);
|
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (kinfo_getvmmap(kp->ki_pid, cntp));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (kinfo_getvmmap_core(procstat->core, cntp));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freevmmap(struct procstat *procstat __unused,
|
|
|
|
struct kinfo_vmentry *vmmap)
|
|
|
|
{
|
|
|
|
|
|
|
|
free(vmmap);
|
|
|
|
}
|
2013-04-20 07:54:07 +00:00
|
|
|
|
2013-05-01 15:01:05 +00:00
|
|
|
static gid_t *
|
|
|
|
procstat_getgroups_kvm(kvm_t *kd, struct kinfo_proc *kp, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
struct proc proc;
|
|
|
|
struct ucred ucred;
|
|
|
|
gid_t *groups;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
assert(kd != NULL);
|
|
|
|
assert(kp != NULL);
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)kp->ki_paddr, &proc,
|
|
|
|
sizeof(proc))) {
|
|
|
|
warnx("can't read proc struct at %p for pid %d",
|
|
|
|
kp->ki_paddr, kp->ki_pid);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if (proc.p_ucred == NOCRED)
|
|
|
|
return (NULL);
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)proc.p_ucred, &ucred,
|
|
|
|
sizeof(ucred))) {
|
|
|
|
warnx("can't read ucred struct at %p for pid %d",
|
|
|
|
proc.p_ucred, kp->ki_pid);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
len = ucred.cr_ngroups * sizeof(gid_t);
|
|
|
|
groups = malloc(len);
|
|
|
|
if (groups == NULL) {
|
|
|
|
warn("malloc(%zu)", len);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)ucred.cr_groups, groups, len)) {
|
|
|
|
warnx("can't read groups at %p for pid %d",
|
|
|
|
ucred.cr_groups, kp->ki_pid);
|
|
|
|
free(groups);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
*cntp = ucred.cr_ngroups;
|
|
|
|
return (groups);
|
|
|
|
}
|
|
|
|
|
2013-04-20 07:54:07 +00:00
|
|
|
static gid_t *
|
|
|
|
procstat_getgroups_sysctl(pid_t pid, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
int mib[4];
|
|
|
|
size_t len;
|
|
|
|
gid_t *groups;
|
|
|
|
|
|
|
|
mib[0] = CTL_KERN;
|
|
|
|
mib[1] = KERN_PROC;
|
|
|
|
mib[2] = KERN_PROC_GROUPS;
|
|
|
|
mib[3] = pid;
|
|
|
|
len = (sysconf(_SC_NGROUPS_MAX) + 1) * sizeof(gid_t);
|
|
|
|
groups = malloc(len);
|
|
|
|
if (groups == NULL) {
|
|
|
|
warn("malloc(%zu)", len);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2017-01-09 00:54:18 +00:00
|
|
|
if (sysctl(mib, nitems(mib), groups, &len, NULL, 0) == -1) {
|
2013-04-20 07:54:07 +00:00
|
|
|
warn("sysctl: kern.proc.groups: %d", pid);
|
|
|
|
free(groups);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
*cntp = len / sizeof(gid_t);
|
|
|
|
return (groups);
|
|
|
|
}
|
|
|
|
|
|
|
|
static gid_t *
|
|
|
|
procstat_getgroups_core(struct procstat_core *core, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
gid_t *groups;
|
|
|
|
|
|
|
|
groups = procstat_core_get(core, PSC_TYPE_GROUPS, NULL, &len);
|
|
|
|
if (groups == NULL)
|
|
|
|
return (NULL);
|
|
|
|
*cntp = len / sizeof(gid_t);
|
|
|
|
return (groups);
|
|
|
|
}
|
|
|
|
|
|
|
|
gid_t *
|
|
|
|
procstat_getgroups(struct procstat *procstat, struct kinfo_proc *kp,
|
|
|
|
unsigned int *cntp)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
2013-05-01 15:01:05 +00:00
|
|
|
return (procstat_getgroups_kvm(procstat->kd, kp, cntp));
|
2013-04-20 07:54:07 +00:00
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getgroups_sysctl(kp->ki_pid, cntp));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getgroups_core(procstat->core, cntp));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freegroups(struct procstat *procstat __unused, gid_t *groups)
|
|
|
|
{
|
|
|
|
|
|
|
|
free(groups);
|
|
|
|
}
|
2013-04-20 07:57:08 +00:00
|
|
|
|
2013-05-01 15:01:05 +00:00
|
|
|
static int
|
|
|
|
procstat_getumask_kvm(kvm_t *kd, struct kinfo_proc *kp, unsigned short *maskp)
|
|
|
|
{
|
2020-11-17 21:14:13 +00:00
|
|
|
struct pwddesc pd;
|
2013-05-01 15:01:05 +00:00
|
|
|
|
|
|
|
assert(kd != NULL);
|
|
|
|
assert(kp != NULL);
|
2020-11-17 21:14:13 +00:00
|
|
|
if (kp->ki_pd == NULL)
|
2013-05-01 15:01:05 +00:00
|
|
|
return (-1);
|
2020-11-17 21:14:13 +00:00
|
|
|
if (!kvm_read_all(kd, (unsigned long)kp->ki_pd, &pd, sizeof(pd))) {
|
|
|
|
warnx("can't read pwddesc at %p for pid %d", kp->ki_pd,
|
2013-05-01 15:01:05 +00:00
|
|
|
kp->ki_pid);
|
|
|
|
return (-1);
|
|
|
|
}
|
2020-11-17 21:14:13 +00:00
|
|
|
*maskp = pd.pd_cmask;
|
2013-05-01 15:01:05 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2013-04-20 07:57:08 +00:00
|
|
|
static int
|
|
|
|
procstat_getumask_sysctl(pid_t pid, unsigned short *maskp)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
int mib[4];
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
mib[0] = CTL_KERN;
|
|
|
|
mib[1] = KERN_PROC;
|
|
|
|
mib[2] = KERN_PROC_UMASK;
|
|
|
|
mib[3] = pid;
|
|
|
|
len = sizeof(*maskp);
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(mib, nitems(mib), maskp, &len, NULL, 0);
|
2014-03-02 13:26:08 +00:00
|
|
|
if (error != 0 && errno != ESRCH && errno != EPERM)
|
2013-04-20 07:57:08 +00:00
|
|
|
warn("sysctl: kern.proc.umask: %d", pid);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_getumask_core(struct procstat_core *core, unsigned short *maskp)
|
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
unsigned short *buf;
|
|
|
|
|
|
|
|
buf = procstat_core_get(core, PSC_TYPE_UMASK, NULL, &len);
|
|
|
|
if (buf == NULL)
|
|
|
|
return (-1);
|
|
|
|
if (len < sizeof(*maskp)) {
|
|
|
|
free(buf);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
*maskp = *buf;
|
|
|
|
free(buf);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_getumask(struct procstat *procstat, struct kinfo_proc *kp,
|
|
|
|
unsigned short *maskp)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
2013-05-01 15:01:05 +00:00
|
|
|
return (procstat_getumask_kvm(procstat->kd, kp, maskp));
|
2013-04-20 07:57:08 +00:00
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getumask_sysctl(kp->ki_pid, maskp));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getumask_core(procstat->core, maskp));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
2013-04-20 07:59:44 +00:00
|
|
|
|
2013-05-01 15:01:05 +00:00
|
|
|
static int
|
|
|
|
procstat_getrlimit_kvm(kvm_t *kd, struct kinfo_proc *kp, int which,
|
|
|
|
struct rlimit* rlimit)
|
|
|
|
{
|
|
|
|
struct proc proc;
|
|
|
|
unsigned long offset;
|
|
|
|
|
|
|
|
assert(kd != NULL);
|
|
|
|
assert(kp != NULL);
|
|
|
|
assert(which >= 0 && which < RLIM_NLIMITS);
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)kp->ki_paddr, &proc,
|
|
|
|
sizeof(proc))) {
|
|
|
|
warnx("can't read proc struct at %p for pid %d",
|
|
|
|
kp->ki_paddr, kp->ki_pid);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
if (proc.p_limit == NULL)
|
|
|
|
return (-1);
|
|
|
|
offset = (unsigned long)proc.p_limit + sizeof(struct rlimit) * which;
|
|
|
|
if (!kvm_read_all(kd, offset, rlimit, sizeof(*rlimit))) {
|
|
|
|
warnx("can't read rlimit struct at %p for pid %d",
|
|
|
|
(void *)offset, kp->ki_pid);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2013-04-20 07:59:44 +00:00
|
|
|
static int
|
|
|
|
procstat_getrlimit_sysctl(pid_t pid, int which, struct rlimit* rlimit)
|
|
|
|
{
|
|
|
|
int error, name[5];
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = KERN_PROC_RLIMIT;
|
|
|
|
name[3] = pid;
|
|
|
|
name[4] = which;
|
|
|
|
len = sizeof(struct rlimit);
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), rlimit, &len, NULL, 0);
|
2013-04-20 07:59:44 +00:00
|
|
|
if (error < 0 && errno != ESRCH) {
|
|
|
|
warn("sysctl: kern.proc.rlimit: %d", pid);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
if (error < 0 || len != sizeof(struct rlimit))
|
|
|
|
return (-1);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_getrlimit_core(struct procstat_core *core, int which,
|
|
|
|
struct rlimit* rlimit)
|
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
struct rlimit* rlimits;
|
|
|
|
|
|
|
|
if (which < 0 || which >= RLIM_NLIMITS) {
|
|
|
|
errno = EINVAL;
|
|
|
|
warn("getrlimit: which");
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
rlimits = procstat_core_get(core, PSC_TYPE_RLIMIT, NULL, &len);
|
|
|
|
if (rlimits == NULL)
|
|
|
|
return (-1);
|
|
|
|
if (len < sizeof(struct rlimit) * RLIM_NLIMITS) {
|
|
|
|
free(rlimits);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
*rlimit = rlimits[which];
|
2018-05-28 02:10:35 +00:00
|
|
|
free(rlimits);
|
2013-04-20 07:59:44 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_getrlimit(struct procstat *procstat, struct kinfo_proc *kp, int which,
|
|
|
|
struct rlimit* rlimit)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
2013-05-01 15:01:05 +00:00
|
|
|
return (procstat_getrlimit_kvm(procstat->kd, kp, which,
|
|
|
|
rlimit));
|
2013-04-20 07:59:44 +00:00
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getrlimit_sysctl(kp->ki_pid, which, rlimit));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getrlimit_core(procstat->core, which, rlimit));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
2013-04-20 08:02:43 +00:00
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_getpathname_sysctl(pid_t pid, char *pathname, size_t maxlen)
|
|
|
|
{
|
|
|
|
int error, name[4];
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = KERN_PROC_PATHNAME;
|
|
|
|
name[3] = pid;
|
|
|
|
len = maxlen;
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), pathname, &len, NULL, 0);
|
2013-04-20 08:02:43 +00:00
|
|
|
if (error != 0 && errno != ESRCH)
|
|
|
|
warn("sysctl: kern.proc.pathname: %d", pid);
|
|
|
|
if (len == 0)
|
|
|
|
pathname[0] = '\0';
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_getpathname_core(struct procstat_core *core, char *pathname,
|
|
|
|
size_t maxlen)
|
|
|
|
{
|
|
|
|
struct kinfo_file *files;
|
|
|
|
int cnt, i, result;
|
|
|
|
|
|
|
|
files = kinfo_getfile_core(core, &cnt);
|
|
|
|
if (files == NULL)
|
|
|
|
return (-1);
|
|
|
|
result = -1;
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
|
|
if (files[i].kf_fd != KF_FD_TYPE_TEXT)
|
|
|
|
continue;
|
|
|
|
strncpy(pathname, files[i].kf_path, maxlen);
|
|
|
|
result = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
free(files);
|
|
|
|
return (result);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_getpathname(struct procstat *procstat, struct kinfo_proc *kp,
|
|
|
|
char *pathname, size_t maxlen)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
2013-05-01 15:02:58 +00:00
|
|
|
/* XXX: Return empty string. */
|
|
|
|
if (maxlen > 0)
|
|
|
|
pathname[0] = '\0';
|
|
|
|
return (0);
|
2013-04-20 08:02:43 +00:00
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getpathname_sysctl(kp->ki_pid, pathname,
|
|
|
|
maxlen));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getpathname_core(procstat->core, pathname,
|
|
|
|
maxlen));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
2013-04-20 08:03:56 +00:00
|
|
|
|
2013-05-01 15:01:05 +00:00
|
|
|
static int
|
|
|
|
procstat_getosrel_kvm(kvm_t *kd, struct kinfo_proc *kp, int *osrelp)
|
|
|
|
{
|
|
|
|
struct proc proc;
|
|
|
|
|
|
|
|
assert(kd != NULL);
|
|
|
|
assert(kp != NULL);
|
|
|
|
if (!kvm_read_all(kd, (unsigned long)kp->ki_paddr, &proc,
|
|
|
|
sizeof(proc))) {
|
|
|
|
warnx("can't read proc struct at %p for pid %d",
|
|
|
|
kp->ki_paddr, kp->ki_pid);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
*osrelp = proc.p_osrel;
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2013-04-20 08:03:56 +00:00
|
|
|
static int
|
|
|
|
procstat_getosrel_sysctl(pid_t pid, int *osrelp)
|
|
|
|
{
|
|
|
|
int error, name[4];
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = KERN_PROC_OSREL;
|
|
|
|
name[3] = pid;
|
|
|
|
len = sizeof(*osrelp);
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), osrelp, &len, NULL, 0);
|
2013-04-20 08:03:56 +00:00
|
|
|
if (error != 0 && errno != ESRCH)
|
|
|
|
warn("sysctl: kern.proc.osrel: %d", pid);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
procstat_getosrel_core(struct procstat_core *core, int *osrelp)
|
|
|
|
{
|
|
|
|
size_t len;
|
|
|
|
int *buf;
|
|
|
|
|
|
|
|
buf = procstat_core_get(core, PSC_TYPE_OSREL, NULL, &len);
|
|
|
|
if (buf == NULL)
|
|
|
|
return (-1);
|
|
|
|
if (len < sizeof(*osrelp)) {
|
|
|
|
free(buf);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
*osrelp = *buf;
|
|
|
|
free(buf);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
procstat_getosrel(struct procstat *procstat, struct kinfo_proc *kp, int *osrelp)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
2013-05-01 15:01:05 +00:00
|
|
|
return (procstat_getosrel_kvm(procstat->kd, kp, osrelp));
|
2013-04-20 08:03:56 +00:00
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getosrel_sysctl(kp->ki_pid, osrelp));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getosrel_core(procstat->core, osrelp));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
}
|
2013-04-20 08:10:47 +00:00
|
|
|
|
|
|
|
#define PROC_AUXV_MAX 256
|
|
|
|
|
|
|
|
#if __ELF_WORD_SIZE == 64
|
|
|
|
static const char *elf32_sv_names[] = {
|
|
|
|
"Linux ELF32",
|
|
|
|
"FreeBSD ELF32",
|
|
|
|
};
|
|
|
|
|
|
|
|
static int
|
|
|
|
is_elf32_sysctl(pid_t pid)
|
|
|
|
{
|
|
|
|
int error, name[4];
|
|
|
|
size_t len, i;
|
|
|
|
static char sv_name[256];
|
|
|
|
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = KERN_PROC_SV_NAME;
|
|
|
|
name[3] = pid;
|
|
|
|
len = sizeof(sv_name);
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), sv_name, &len, NULL, 0);
|
2013-04-20 08:10:47 +00:00
|
|
|
if (error != 0 || len == 0)
|
|
|
|
return (0);
|
|
|
|
for (i = 0; i < sizeof(elf32_sv_names) / sizeof(*elf32_sv_names); i++) {
|
|
|
|
if (strncmp(sv_name, elf32_sv_names[i], sizeof(sv_name)) == 0)
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static Elf_Auxinfo *
|
|
|
|
procstat_getauxv32_sysctl(pid_t pid, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
Elf_Auxinfo *auxv;
|
|
|
|
Elf32_Auxinfo *auxv32;
|
|
|
|
void *ptr;
|
|
|
|
size_t len;
|
|
|
|
unsigned int i, count;
|
|
|
|
int name[4];
|
|
|
|
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = KERN_PROC_AUXV;
|
|
|
|
name[3] = pid;
|
|
|
|
len = PROC_AUXV_MAX * sizeof(Elf32_Auxinfo);
|
|
|
|
auxv = NULL;
|
|
|
|
auxv32 = malloc(len);
|
|
|
|
if (auxv32 == NULL) {
|
|
|
|
warn("malloc(%zu)", len);
|
|
|
|
goto out;
|
|
|
|
}
|
2017-01-09 00:54:18 +00:00
|
|
|
if (sysctl(name, nitems(name), auxv32, &len, NULL, 0) == -1) {
|
2013-04-20 08:10:47 +00:00
|
|
|
if (errno != ESRCH && errno != EPERM)
|
|
|
|
warn("sysctl: kern.proc.auxv: %d: %d", pid, errno);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
count = len / sizeof(Elf_Auxinfo);
|
|
|
|
auxv = malloc(count * sizeof(Elf_Auxinfo));
|
|
|
|
if (auxv == NULL) {
|
|
|
|
warn("malloc(%zu)", count * sizeof(Elf_Auxinfo));
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
for (i = 0; i < count; i++) {
|
|
|
|
/*
|
|
|
|
* XXX: We expect that values for a_type on a 32-bit platform
|
|
|
|
* are directly mapped to values on 64-bit one, which is not
|
|
|
|
* necessarily true.
|
|
|
|
*/
|
|
|
|
auxv[i].a_type = auxv32[i].a_type;
|
|
|
|
ptr = &auxv32[i].a_un;
|
|
|
|
auxv[i].a_un.a_val = *((uint32_t *)ptr);
|
|
|
|
}
|
|
|
|
*cntp = count;
|
|
|
|
out:
|
|
|
|
free(auxv32);
|
|
|
|
return (auxv);
|
|
|
|
}
|
|
|
|
#endif /* __ELF_WORD_SIZE == 64 */
|
|
|
|
|
|
|
|
static Elf_Auxinfo *
|
|
|
|
procstat_getauxv_sysctl(pid_t pid, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
Elf_Auxinfo *auxv;
|
|
|
|
int name[4];
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
#if __ELF_WORD_SIZE == 64
|
|
|
|
if (is_elf32_sysctl(pid))
|
|
|
|
return (procstat_getauxv32_sysctl(pid, cntp));
|
|
|
|
#endif
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = KERN_PROC_AUXV;
|
|
|
|
name[3] = pid;
|
|
|
|
len = PROC_AUXV_MAX * sizeof(Elf_Auxinfo);
|
|
|
|
auxv = malloc(len);
|
|
|
|
if (auxv == NULL) {
|
|
|
|
warn("malloc(%zu)", len);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2017-01-09 00:54:18 +00:00
|
|
|
if (sysctl(name, nitems(name), auxv, &len, NULL, 0) == -1) {
|
2013-04-20 08:10:47 +00:00
|
|
|
if (errno != ESRCH && errno != EPERM)
|
|
|
|
warn("sysctl: kern.proc.auxv: %d: %d", pid, errno);
|
|
|
|
free(auxv);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
*cntp = len / sizeof(Elf_Auxinfo);
|
|
|
|
return (auxv);
|
|
|
|
}
|
|
|
|
|
|
|
|
static Elf_Auxinfo *
|
|
|
|
procstat_getauxv_core(struct procstat_core *core, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
Elf_Auxinfo *auxv;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
auxv = procstat_core_get(core, PSC_TYPE_AUXV, NULL, &len);
|
|
|
|
if (auxv == NULL)
|
|
|
|
return (NULL);
|
|
|
|
*cntp = len / sizeof(Elf_Auxinfo);
|
|
|
|
return (auxv);
|
|
|
|
}
|
|
|
|
|
|
|
|
Elf_Auxinfo *
|
|
|
|
procstat_getauxv(struct procstat *procstat, struct kinfo_proc *kp,
|
|
|
|
unsigned int *cntp)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
|
|
|
warnx("kvm method is not supported");
|
|
|
|
return (NULL);
|
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getauxv_sysctl(kp->ki_pid, cntp));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getauxv_core(procstat->core, cntp));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freeauxv(struct procstat *procstat __unused, Elf_Auxinfo *auxv)
|
|
|
|
{
|
|
|
|
|
|
|
|
free(auxv);
|
|
|
|
}
|
2013-04-20 08:17:20 +00:00
|
|
|
|
2017-03-30 18:21:36 +00:00
|
|
|
static struct ptrace_lwpinfo *
|
|
|
|
procstat_getptlwpinfo_core(struct procstat_core *core, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
void *buf;
|
|
|
|
struct ptrace_lwpinfo *pl;
|
|
|
|
unsigned int cnt;
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
cnt = procstat_core_note_count(core, PSC_TYPE_PTLWPINFO);
|
|
|
|
if (cnt == 0)
|
|
|
|
return (NULL);
|
|
|
|
|
|
|
|
len = cnt * sizeof(*pl);
|
|
|
|
buf = calloc(1, len);
|
|
|
|
pl = procstat_core_get(core, PSC_TYPE_PTLWPINFO, buf, &len);
|
|
|
|
if (pl == NULL) {
|
|
|
|
free(buf);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
*cntp = len / sizeof(*pl);
|
|
|
|
return (pl);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct ptrace_lwpinfo *
|
|
|
|
procstat_getptlwpinfo(struct procstat *procstat, unsigned int *cntp)
|
|
|
|
{
|
|
|
|
switch (procstat->type) {
|
2017-06-27 08:18:08 +00:00
|
|
|
case PROCSTAT_KVM:
|
|
|
|
warnx("kvm method is not supported");
|
|
|
|
return (NULL);
|
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
warnx("sysctl method is not supported");
|
|
|
|
return (NULL);
|
2017-03-30 18:21:36 +00:00
|
|
|
case PROCSTAT_CORE:
|
|
|
|
return (procstat_getptlwpinfo_core(procstat->core, cntp));
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freeptlwpinfo(struct procstat *procstat __unused,
|
|
|
|
struct ptrace_lwpinfo *pl)
|
|
|
|
{
|
|
|
|
free(pl);
|
|
|
|
}
|
|
|
|
|
2013-04-20 08:17:20 +00:00
|
|
|
static struct kinfo_kstack *
|
|
|
|
procstat_getkstack_sysctl(pid_t pid, int *cntp)
|
|
|
|
{
|
|
|
|
struct kinfo_kstack *kkstp;
|
|
|
|
int error, name[4];
|
|
|
|
size_t len;
|
|
|
|
|
|
|
|
name[0] = CTL_KERN;
|
|
|
|
name[1] = KERN_PROC;
|
|
|
|
name[2] = KERN_PROC_KSTACK;
|
|
|
|
name[3] = pid;
|
|
|
|
|
|
|
|
len = 0;
|
2017-01-09 00:54:18 +00:00
|
|
|
error = sysctl(name, nitems(name), NULL, &len, NULL, 0);
|
2013-04-20 08:17:20 +00:00
|
|
|
if (error < 0 && errno != ESRCH && errno != EPERM && errno != ENOENT) {
|
|
|
|
warn("sysctl: kern.proc.kstack: %d", pid);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if (error == -1 && errno == ENOENT) {
|
|
|
|
warnx("sysctl: kern.proc.kstack unavailable"
|
|
|
|
" (options DDB or options STACK required in kernel)");
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
if (error == -1)
|
|
|
|
return (NULL);
|
|
|
|
kkstp = malloc(len);
|
|
|
|
if (kkstp == NULL) {
|
|
|
|
warn("malloc(%zu)", len);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2021-05-27 16:33:22 +00:00
|
|
|
if (sysctl(name, nitems(name), kkstp, &len, NULL, 0) == -1 &&
|
|
|
|
errno != ENOMEM) {
|
2013-04-20 08:17:20 +00:00
|
|
|
warn("sysctl: kern.proc.pid: %d", pid);
|
|
|
|
free(kkstp);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
*cntp = len / sizeof(*kkstp);
|
|
|
|
|
|
|
|
return (kkstp);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct kinfo_kstack *
|
|
|
|
procstat_getkstack(struct procstat *procstat, struct kinfo_proc *kp,
|
|
|
|
unsigned int *cntp)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
|
|
|
warnx("kvm method is not supported");
|
|
|
|
return (NULL);
|
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getkstack_sysctl(kp->ki_pid, cntp));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
warnx("core method is not supported");
|
|
|
|
return (NULL);
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freekstack(struct procstat *procstat __unused,
|
|
|
|
struct kinfo_kstack *kkstp)
|
|
|
|
{
|
|
|
|
|
|
|
|
free(kkstp);
|
|
|
|
}
|
2022-04-03 14:42:03 +00:00
|
|
|
|
|
|
|
static struct advlock_list *
|
|
|
|
procstat_getadvlock_sysctl(struct procstat *procstat __unused)
|
|
|
|
{
|
|
|
|
struct advlock_list *res;
|
|
|
|
struct advlock *a;
|
|
|
|
void *buf;
|
|
|
|
char *c;
|
|
|
|
struct kinfo_lockf *kl;
|
|
|
|
size_t buf_len;
|
|
|
|
int error;
|
|
|
|
static const int kl_name[] = { CTL_KERN, KERN_LOCKF };
|
|
|
|
|
|
|
|
res = malloc(sizeof(*res));
|
|
|
|
if (res == NULL)
|
|
|
|
return (NULL);
|
|
|
|
STAILQ_INIT(res);
|
|
|
|
buf = NULL;
|
|
|
|
|
|
|
|
buf_len = 0;
|
|
|
|
error = sysctl(kl_name, nitems(kl_name), NULL, &buf_len, NULL, 0);
|
|
|
|
if (error != 0) {
|
|
|
|
warn("sysctl KERN_LOCKF size");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
buf_len *= 2;
|
|
|
|
buf = malloc(buf_len);
|
|
|
|
if (buf == NULL) {
|
|
|
|
warn("malloc");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
error = sysctl(kl_name, nitems(kl_name), buf, &buf_len, NULL, 0);
|
|
|
|
if (error != 0) {
|
|
|
|
warn("sysctl KERN_LOCKF data");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (c = buf; (char *)c < (char *)buf + buf_len;
|
|
|
|
c += kl->kl_structsize) {
|
|
|
|
kl = (struct kinfo_lockf *)(void *)c;
|
|
|
|
if (sizeof(*kl) < (size_t)kl->kl_structsize) {
|
|
|
|
warn("ABI broken");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
a = malloc(sizeof(*a));
|
|
|
|
if (a == NULL) {
|
|
|
|
warn("malloc advlock");
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
switch (kl->kl_rw) {
|
|
|
|
case KLOCKF_RW_READ:
|
|
|
|
a->rw = PS_ADVLOCK_RO;
|
|
|
|
break;
|
|
|
|
case KLOCKF_RW_WRITE:
|
|
|
|
a->rw = PS_ADVLOCK_RW;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
warn("ABI broken");
|
|
|
|
free(a);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
switch (kl->kl_type) {
|
|
|
|
case KLOCKF_TYPE_FLOCK:
|
|
|
|
a->type = PS_ADVLOCK_TYPE_FLOCK;
|
|
|
|
break;
|
|
|
|
case KLOCKF_TYPE_PID:
|
|
|
|
a->type = PS_ADVLOCK_TYPE_PID;
|
|
|
|
break;
|
|
|
|
case KLOCKF_TYPE_REMOTE:
|
|
|
|
a->type = PS_ADVLOCK_TYPE_REMOTE;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
warn("ABI broken");
|
|
|
|
free(a);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
a->pid = kl->kl_pid;
|
|
|
|
a->sysid = kl->kl_sysid;
|
|
|
|
a->file_fsid = kl->kl_file_fsid;
|
|
|
|
a->file_rdev = kl->kl_file_rdev;
|
|
|
|
a->file_fileid = kl->kl_file_fileid;
|
|
|
|
a->start = kl->kl_start;
|
|
|
|
a->len = kl->kl_len;
|
|
|
|
if (kl->kl_path[0] != '\0') {
|
|
|
|
a->path = strdup(kl->kl_path);
|
|
|
|
if (a->path == NULL) {
|
|
|
|
warn("malloc");
|
|
|
|
free(a);
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
} else
|
|
|
|
a->path = NULL;
|
|
|
|
STAILQ_INSERT_TAIL(res, a, next);
|
|
|
|
}
|
|
|
|
|
|
|
|
free(buf);
|
|
|
|
return (res);
|
|
|
|
|
|
|
|
fail:
|
|
|
|
free(buf);
|
|
|
|
procstat_freeadvlock(procstat, res);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct advlock_list *
|
|
|
|
procstat_getadvlock(struct procstat *procstat)
|
|
|
|
{
|
|
|
|
switch(procstat->type) {
|
|
|
|
case PROCSTAT_KVM:
|
|
|
|
warnx("kvm method is not supported");
|
|
|
|
return (NULL);
|
|
|
|
case PROCSTAT_SYSCTL:
|
|
|
|
return (procstat_getadvlock_sysctl(procstat));
|
|
|
|
case PROCSTAT_CORE:
|
|
|
|
warnx("core method is not supported");
|
|
|
|
return (NULL);
|
|
|
|
default:
|
|
|
|
warnx("unknown access method: %d", procstat->type);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
procstat_freeadvlock(struct procstat *procstat __unused,
|
|
|
|
struct advlock_list *lst)
|
|
|
|
{
|
|
|
|
struct advlock *a, *a1;
|
|
|
|
|
|
|
|
STAILQ_FOREACH_SAFE(a, lst, next, a1) {
|
|
|
|
free(__DECONST(char *, a->path));
|
|
|
|
free(a);
|
|
|
|
}
|
|
|
|
free(lst);
|
|
|
|
}
|
|
|
|
|