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529b14ddf5
NetBSD/sys/kern/init_sysctl.c
atatat 529b14ddf5 Add kern.file2. As kern.proc2 is to kern.proc, so is kern.file2 to 
kern.file, namely a 32/64 bit clean sysctl interface to the same data.
It also borrows a few things from struct vnode (if applicable) and
from struct proc, just to tie things together a bit more.

You can walk this list "by file" or "by pid".  The former method is
similar to kern.file but omits the filehead, and the latter can give
you duplicates if multiple processes have the same struct file open,
but tells you which process it is.
2005-03-09 05:02:17 +00:00

2743 lines
73 KiB
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/* $NetBSD: init_sysctl.c,v 1.34 2005/03/09 05:02:17 atatat Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Brown.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: init_sysctl.c,v 1.34 2005/03/09 05:02:17 atatat Exp $");
#include "opt_sysv.h"
#include "opt_multiprocessor.h"
#include "opt_posix.h"
#include "pty.h"
#include "rnd.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/errno.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/unistd.h>
#include <sys/disklabel.h>
#include <sys/rnd.h>
#include <sys/vnode.h>
#include <sys/mount.h>
#include <sys/namei.h>
#include <sys/msgbuf.h>
#include <dev/cons.h>
#include <sys/socketvar.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/tty.h>
#include <sys/malloc.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/exec.h>
#include <sys/conf.h>
#include <sys/device.h>
#if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM)
#include <sys/ipc.h>
#endif
#ifdef SYSVMSG
#include <sys/msg.h>
#endif
#ifdef SYSVSEM
#include <sys/sem.h>
#endif
#ifdef SYSVSHM
#include <sys/shm.h>
#endif
#include <machine/cpu.h>
/*
* try over estimating by 5 procs/lwps
*/
#define KERN_PROCSLOP (5 * sizeof(struct kinfo_proc))
#define KERN_LWPSLOP (5 * sizeof(struct kinfo_lwp))
#ifndef MULTIPROCESSOR
#define sysctl_ncpus() (1)
#else /* MULTIPROCESSOR */
#ifndef CPU_INFO_FOREACH
#define CPU_INFO_ITERATOR int
#define CPU_INFO_FOREACH(cii, ci) cii = 0, ci = curcpu(); ci != NULL; ci = NULL
#endif
static int
sysctl_ncpus(void)
{
struct cpu_info *ci;
CPU_INFO_ITERATOR cii;
int ncpus = 0;
for (CPU_INFO_FOREACH(cii, ci))
ncpus++;
return (ncpus);
}
#endif /* MULTIPROCESSOR */
static int sysctl_kern_maxvnodes(SYSCTLFN_PROTO);
static int sysctl_kern_rtc_offset(SYSCTLFN_PROTO);
static int sysctl_kern_maxproc(SYSCTLFN_PROTO);
static int sysctl_kern_securelevel(SYSCTLFN_PROTO);
static int sysctl_kern_hostid(SYSCTLFN_PROTO);
static int sysctl_setlen(SYSCTLFN_PROTO);
static int sysctl_kern_clockrate(SYSCTLFN_PROTO);
static int sysctl_kern_file(SYSCTLFN_PROTO);
static int sysctl_kern_autonice(SYSCTLFN_PROTO);
static int sysctl_msgbuf(SYSCTLFN_PROTO);
static int sysctl_kern_defcorename(SYSCTLFN_PROTO);
static int sysctl_kern_cptime(SYSCTLFN_PROTO);
#if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM)
static int sysctl_kern_sysvipc(SYSCTLFN_PROTO);
#endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */
#if NPTY > 0
static int sysctl_kern_maxptys(SYSCTLFN_PROTO);
#endif /* NPTY > 0 */
static int sysctl_kern_sbmax(SYSCTLFN_PROTO);
static int sysctl_kern_urnd(SYSCTLFN_PROTO);
static int sysctl_kern_lwp(SYSCTLFN_PROTO);
static int sysctl_kern_forkfsleep(SYSCTLFN_PROTO);
static int sysctl_kern_root_partition(SYSCTLFN_PROTO);
static int sysctl_kern_drivers(SYSCTLFN_PROTO);
static int sysctl_kern_file2(SYSCTLFN_PROTO);
static int sysctl_doeproc(SYSCTLFN_PROTO);
static int sysctl_kern_proc_args(SYSCTLFN_PROTO);
static int sysctl_hw_usermem(SYSCTLFN_PROTO);
static int sysctl_hw_cnmagic(SYSCTLFN_PROTO);
static int sysctl_hw_ncpu(SYSCTLFN_PROTO);
static void fill_kproc2(struct proc *, struct kinfo_proc2 *);
static void fill_lwp(struct lwp *l, struct kinfo_lwp *kl);
static void fill_file(struct kinfo_file *, const struct file *, struct proc *,
int);
/*
* ********************************************************************
* section 1: setup routines
* ********************************************************************
* these functions are stuffed into a link set for sysctl setup
* functions. they're never called or referenced from anywhere else.
* ********************************************************************
*/
/*
* sets up the base nodes...
*/
SYSCTL_SETUP(sysctl_root_setup, "sysctl base setup")
{
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "kern",
SYSCTL_DESCR("High kernel"),
NULL, 0, NULL, 0,
CTL_KERN, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "vm",
SYSCTL_DESCR("Virtual memory"),
NULL, 0, NULL, 0,
CTL_VM, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "vfs",
SYSCTL_DESCR("Filesystem"),
NULL, 0, NULL, 0,
CTL_VFS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "net",
SYSCTL_DESCR("Networking"),
NULL, 0, NULL, 0,
CTL_NET, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "debug",
SYSCTL_DESCR("Debugging"),
NULL, 0, NULL, 0,
CTL_DEBUG, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "hw",
SYSCTL_DESCR("Generic CPU, I/O"),
NULL, 0, NULL, 0,
CTL_HW, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "machdep",
SYSCTL_DESCR("Machine dependent"),
NULL, 0, NULL, 0,
CTL_MACHDEP, CTL_EOL);
/*
* this node is inserted so that the sysctl nodes in libc can
* operate.
*/
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "user",
SYSCTL_DESCR("User-level"),
NULL, 0, NULL, 0,
CTL_USER, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "ddb",
SYSCTL_DESCR("In-kernel debugger"),
NULL, 0, NULL, 0,
CTL_DDB, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "proc",
SYSCTL_DESCR("Per-process"),
NULL, 0, NULL, 0,
CTL_PROC, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_NODE, "vendor",
SYSCTL_DESCR("Vendor specific"),
NULL, 0, NULL, 0,
CTL_VENDOR, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "emul",
SYSCTL_DESCR("Emulation settings"),
NULL, 0, NULL, 0,
CTL_EMUL, CTL_EOL);
}
/*
* this setup routine is a replacement for kern_sysctl()
*/
SYSCTL_SETUP(sysctl_kern_setup, "sysctl kern subtree setup")
{
extern int kern_logsigexit; /* defined in kern/kern_sig.c */
extern fixpt_t ccpu; /* defined in kern/kern_synch.c */
extern int dumponpanic; /* defined in kern/subr_prf.c */
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "kern", NULL,
NULL, 0, NULL, 0,
CTL_KERN, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "ostype",
SYSCTL_DESCR("Operating system type"),
NULL, 0, &ostype, 0,
CTL_KERN, KERN_OSTYPE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "osrelease",
SYSCTL_DESCR("Operating system release"),
NULL, 0, &osrelease, 0,
CTL_KERN, KERN_OSRELEASE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "osrevision",
SYSCTL_DESCR("Operating system revision"),
NULL, __NetBSD_Version__, NULL, 0,
CTL_KERN, KERN_OSREV, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "version",
SYSCTL_DESCR("Kernel version"),
NULL, 0, &version, 0,
CTL_KERN, KERN_VERSION, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "maxvnodes",
SYSCTL_DESCR("Maximum number of vnodes"),
sysctl_kern_maxvnodes, 0, NULL, 0,
CTL_KERN, KERN_MAXVNODES, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "maxproc",
SYSCTL_DESCR("Maximum number of simultaneous processes"),
sysctl_kern_maxproc, 0, NULL, 0,
CTL_KERN, KERN_MAXPROC, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "maxfiles",
SYSCTL_DESCR("Maximum number of open files"),
NULL, 0, &maxfiles, 0,
CTL_KERN, KERN_MAXFILES, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "argmax",
SYSCTL_DESCR("Maximum number of bytes of arguments to "
"execve(2)"),
NULL, ARG_MAX, NULL, 0,
CTL_KERN, KERN_ARGMAX, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "securelevel",
SYSCTL_DESCR("System security level"),
sysctl_kern_securelevel, 0, &securelevel, 0,
CTL_KERN, KERN_SECURELVL, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_STRING, "hostname",
SYSCTL_DESCR("System hostname"),
sysctl_setlen, 0, &hostname, MAXHOSTNAMELEN,
CTL_KERN, KERN_HOSTNAME, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX,
CTLTYPE_INT, "hostid",
SYSCTL_DESCR("System host ID number"),
sysctl_kern_hostid, 0, NULL, 0,
CTL_KERN, KERN_HOSTID, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "clockrate",
SYSCTL_DESCR("Kernel clock rates"),
sysctl_kern_clockrate, 0, NULL,
sizeof(struct clockinfo),
CTL_KERN, KERN_CLOCKRATE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "vnode",
SYSCTL_DESCR("System vnode table"),
sysctl_kern_vnode, 0, NULL, 0,
CTL_KERN, KERN_VNODE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "file",
SYSCTL_DESCR("System open file table"),
sysctl_kern_file, 0, NULL, 0,
CTL_KERN, KERN_FILE, CTL_EOL);
#ifndef GPROF
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "profiling",
SYSCTL_DESCR("Profiling information (not available)"),
sysctl_notavail, 0, NULL, 0,
CTL_KERN, KERN_PROF, CTL_EOL);
#endif
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "posix1version",
SYSCTL_DESCR("Version of ISO/IEC 9945 (POSIX 1003.1) "
"with which the operating system attempts "
"to comply"),
NULL, _POSIX_VERSION, NULL, 0,
CTL_KERN, KERN_POSIX1, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "ngroups",
SYSCTL_DESCR("Maximum number of supplemental groups"),
NULL, NGROUPS_MAX, NULL, 0,
CTL_KERN, KERN_NGROUPS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "job_control",
SYSCTL_DESCR("Whether job control is available"),
NULL, 1, NULL, 0,
CTL_KERN, KERN_JOB_CONTROL, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "saved_ids",
SYSCTL_DESCR("Whether saved set-group/user ID is "
"available"), NULL,
#ifdef _POSIX_SAVED_IDS
1,
#else /* _POSIX_SAVED_IDS */
0,
#endif /* _POSIX_SAVED_IDS */
NULL, 0, CTL_KERN, KERN_SAVED_IDS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "boottime",
SYSCTL_DESCR("System boot time"),
NULL, 0, &boottime, sizeof(boottime),
CTL_KERN, KERN_BOOTTIME, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_STRING, "domainname",
SYSCTL_DESCR("YP domain name"),
sysctl_setlen, 0, &domainname, MAXHOSTNAMELEN,
CTL_KERN, KERN_DOMAINNAME, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "maxpartitions",
SYSCTL_DESCR("Maximum number of partitions allowed per "
"disk"),
NULL, MAXPARTITIONS, NULL, 0,
CTL_KERN, KERN_MAXPARTITIONS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "rawpartition",
SYSCTL_DESCR("Raw partition of a disk"),
NULL, RAW_PART, NULL, 0,
CTL_KERN, KERN_RAWPARTITION, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "timex", NULL,
sysctl_notavail, 0, NULL, 0,
CTL_KERN, KERN_TIMEX, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "autonicetime",
SYSCTL_DESCR("CPU clock seconds before non-root "
"process priority is lowered"),
sysctl_kern_autonice, 0, &autonicetime, 0,
CTL_KERN, KERN_AUTONICETIME, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "autoniceval",
SYSCTL_DESCR("Automatic reniced non-root process "
"priority"),
sysctl_kern_autonice, 0, &autoniceval, 0,
CTL_KERN, KERN_AUTONICEVAL, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "rtc_offset",
SYSCTL_DESCR("Offset of real time clock from UTC in "
"minutes"),
sysctl_kern_rtc_offset, 0, &rtc_offset, 0,
CTL_KERN, KERN_RTC_OFFSET, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "root_device",
SYSCTL_DESCR("Name of the root device"),
sysctl_root_device, 0, NULL, 0,
CTL_KERN, KERN_ROOT_DEVICE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "msgbufsize",
SYSCTL_DESCR("Size of the kernel message buffer"),
sysctl_msgbuf, 0, NULL, 0,
CTL_KERN, KERN_MSGBUFSIZE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "fsync",
SYSCTL_DESCR("Whether the POSIX 1003.1b File "
"Synchronization Option is available on "
"this system"),
NULL, 1, NULL, 0,
CTL_KERN, KERN_FSYNC, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "sysvmsg",
SYSCTL_DESCR("System V style message support available"),
NULL,
#ifdef SYSVMSG
1,
#else /* SYSVMSG */
0,
#endif /* SYSVMSG */
NULL, 0, CTL_KERN, KERN_SYSVMSG, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "sysvsem",
SYSCTL_DESCR("System V style semaphore support "
"available"), NULL,
#ifdef SYSVSEM
1,
#else /* SYSVSEM */
0,
#endif /* SYSVSEM */
NULL, 0, CTL_KERN, KERN_SYSVSEM, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "sysvshm",
SYSCTL_DESCR("System V style shared memory support "
"available"), NULL,
#ifdef SYSVSHM
1,
#else /* SYSVSHM */
0,
#endif /* SYSVSHM */
NULL, 0, CTL_KERN, KERN_SYSVSHM, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "synchronized_io",
SYSCTL_DESCR("Whether the POSIX 1003.1b Synchronized "
"I/O Option is available on this system"),
NULL, 1, NULL, 0,
CTL_KERN, KERN_SYNCHRONIZED_IO, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "iov_max",
SYSCTL_DESCR("Maximum number of iovec structures per "
"process"),
NULL, IOV_MAX, NULL, 0,
CTL_KERN, KERN_IOV_MAX, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "mapped_files",
SYSCTL_DESCR("Whether the POSIX 1003.1b Memory Mapped "
"Files Option is available on this system"),
NULL, 1, NULL, 0,
CTL_KERN, KERN_MAPPED_FILES, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "memlock",
SYSCTL_DESCR("Whether the POSIX 1003.1b Process Memory "
"Locking Option is available on this "
"system"),
NULL, 1, NULL, 0,
CTL_KERN, KERN_MEMLOCK, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "memlock_range",
SYSCTL_DESCR("Whether the POSIX 1003.1b Range Memory "
"Locking Option is available on this "
"system"),
NULL, 1, NULL, 0,
CTL_KERN, KERN_MEMLOCK_RANGE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "memory_protection",
SYSCTL_DESCR("Whether the POSIX 1003.1b Memory "
"Protection Option is available on this "
"system"),
NULL, 1, NULL, 0,
CTL_KERN, KERN_MEMORY_PROTECTION, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "login_name_max",
SYSCTL_DESCR("Maximum login name length"),
NULL, LOGIN_NAME_MAX, NULL, 0,
CTL_KERN, KERN_LOGIN_NAME_MAX, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_STRING, "defcorename",
SYSCTL_DESCR("Default core file name"),
sysctl_kern_defcorename, 0, defcorename, MAXPATHLEN,
CTL_KERN, KERN_DEFCORENAME, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "logsigexit",
SYSCTL_DESCR("Log process exit when caused by signals"),
NULL, 0, &kern_logsigexit, 0,
CTL_KERN, KERN_LOGSIGEXIT, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "fscale",
SYSCTL_DESCR("Kernel fixed-point scale factor"),
NULL, FSCALE, NULL, 0,
CTL_KERN, KERN_FSCALE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "ccpu",
SYSCTL_DESCR("Scheduler exponential decay value"),
NULL, 0, &ccpu, 0,
CTL_KERN, KERN_CCPU, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "cp_time",
SYSCTL_DESCR("Clock ticks spent in different CPU states"),
sysctl_kern_cptime, 0, NULL, 0,
CTL_KERN, KERN_CP_TIME, CTL_EOL);
#if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM)
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "sysvipc_info",
SYSCTL_DESCR("System V style IPC information"),
sysctl_kern_sysvipc, 0, NULL, 0,
CTL_KERN, KERN_SYSVIPC_INFO, CTL_EOL);
#endif /* SYSVMSG || SYSVSEM || SYSVSHM */
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "msgbuf",
SYSCTL_DESCR("Kernel message buffer"),
sysctl_msgbuf, 0, NULL, 0,
CTL_KERN, KERN_MSGBUF, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "consdev",
SYSCTL_DESCR("Console device"),
sysctl_consdev, 0, NULL, sizeof(dev_t),
CTL_KERN, KERN_CONSDEV, CTL_EOL);
#if NPTY > 0
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "maxptys",
SYSCTL_DESCR("Maximum number of pseudo-ttys"),
sysctl_kern_maxptys, 0, NULL, 0,
CTL_KERN, KERN_MAXPTYS, CTL_EOL);
#endif /* NPTY > 0 */
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "maxphys",
SYSCTL_DESCR("Maximum raw I/O transfer size"),
NULL, MAXPHYS, NULL, 0,
CTL_KERN, KERN_MAXPHYS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "sbmax",
SYSCTL_DESCR("Maximum socket buffer size"),
sysctl_kern_sbmax, 0, NULL, 0,
CTL_KERN, KERN_SBMAX, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "monotonic_clock",
SYSCTL_DESCR("Implementation version of the POSIX "
"1003.1b Monotonic Clock Option"),
/* XXX _POSIX_VERSION */
NULL, _POSIX_MONOTONIC_CLOCK, NULL, 0,
CTL_KERN, KERN_MONOTONIC_CLOCK, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "urandom",
SYSCTL_DESCR("Random integer value"),
sysctl_kern_urnd, 0, NULL, 0,
CTL_KERN, KERN_URND, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "labelsector",
SYSCTL_DESCR("Sector number containing the disklabel"),
NULL, LABELSECTOR, NULL, 0,
CTL_KERN, KERN_LABELSECTOR, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "labeloffset",
SYSCTL_DESCR("Offset of the disklabel within the "
"sector"),
NULL, LABELOFFSET, NULL, 0,
CTL_KERN, KERN_LABELOFFSET, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "lwp",
SYSCTL_DESCR("System-wide LWP information"),
sysctl_kern_lwp, 0, NULL, 0,
CTL_KERN, KERN_LWP, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "forkfsleep",
SYSCTL_DESCR("Milliseconds to sleep on fork failure due "
"to process limits"),
sysctl_kern_forkfsleep, 0, NULL, 0,
CTL_KERN, KERN_FORKFSLEEP, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "posix_threads",
SYSCTL_DESCR("Version of IEEE Std 1003.1 and its "
"Threads option to which the system "
"attempts to conform"),
/* XXX _POSIX_VERSION */
NULL, _POSIX_THREADS, NULL, 0,
CTL_KERN, KERN_POSIX_THREADS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "posix_semaphores",
SYSCTL_DESCR("Version of IEEE Std 1003.1 and its "
"Semaphores option to which the system "
"attempts to conform"), NULL,
#ifdef P1003_1B_SEMAPHORE
200112,
#else /* P1003_1B_SEMAPHORE */
0,
#endif /* P1003_1B_SEMAPHORE */
NULL, 0, CTL_KERN, KERN_POSIX_SEMAPHORES, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "posix_barriers",
SYSCTL_DESCR("Version of IEEE Std 1003.1 and its "
"Barriers option to which the system "
"attempts to conform"),
/* XXX _POSIX_VERSION */
NULL, _POSIX_BARRIERS, NULL, 0,
CTL_KERN, KERN_POSIX_BARRIERS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "posix_timers",
SYSCTL_DESCR("Version of IEEE Std 1003.1 and its "
"Timers option to which the system "
"attempts to conform"),
/* XXX _POSIX_VERSION */
NULL, _POSIX_TIMERS, NULL, 0,
CTL_KERN, KERN_POSIX_TIMERS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "posix_spin_locks",
SYSCTL_DESCR("Version of IEEE Std 1003.1 and its Spin "
"Locks option to which the system attempts "
"to conform"),
/* XXX _POSIX_VERSION */
NULL, _POSIX_SPIN_LOCKS, NULL, 0,
CTL_KERN, KERN_POSIX_SPIN_LOCKS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "posix_reader_writer_locks",
SYSCTL_DESCR("Version of IEEE Std 1003.1 and its "
"Read-Write Locks option to which the "
"system attempts to conform"),
/* XXX _POSIX_VERSION */
NULL, _POSIX_READER_WRITER_LOCKS, NULL, 0,
CTL_KERN, KERN_POSIX_READER_WRITER_LOCKS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
CTLTYPE_INT, "dump_on_panic",
SYSCTL_DESCR("Perform a crash dump on system panic"),
NULL, 0, &dumponpanic, 0,
CTL_KERN, KERN_DUMP_ON_PANIC, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "root_partition",
SYSCTL_DESCR("Root partition on the root device"),
sysctl_kern_root_partition, 0, NULL, 0,
CTL_KERN, KERN_ROOT_PARTITION, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "drivers",
SYSCTL_DESCR("List of all drivers with block and "
"character device numbers"),
sysctl_kern_drivers, 0, NULL, 0,
CTL_KERN, KERN_DRIVERS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "file2",
SYSCTL_DESCR("System open file table"),
sysctl_kern_file2, 0, NULL, 0,
CTL_KERN, KERN_FILE2, CTL_EOL);
}
SYSCTL_SETUP(sysctl_kern_proc_setup,
"sysctl kern.proc/proc2/proc_args subtree setup")
{
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "kern", NULL,
NULL, 0, NULL, 0,
CTL_KERN, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "proc",
SYSCTL_DESCR("System-wide process information"),
sysctl_doeproc, 0, NULL, 0,
CTL_KERN, KERN_PROC, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "proc2",
SYSCTL_DESCR("Machine-independent process information"),
sysctl_doeproc, 0, NULL, 0,
CTL_KERN, KERN_PROC2, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "proc_args",
SYSCTL_DESCR("Process argument information"),
sysctl_kern_proc_args, 0, NULL, 0,
CTL_KERN, KERN_PROC_ARGS, CTL_EOL);
/*
"nodes" under these:
KERN_PROC_ALL
KERN_PROC_PID pid
KERN_PROC_PGRP pgrp
KERN_PROC_SESSION sess
KERN_PROC_TTY tty
KERN_PROC_UID uid
KERN_PROC_RUID uid
KERN_PROC_GID gid
KERN_PROC_RGID gid
all in all, probably not worth the effort...
*/
}
SYSCTL_SETUP(sysctl_hw_setup, "sysctl hw subtree setup")
{
u_int u;
u_quad_t q;
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "hw", NULL,
NULL, 0, NULL, 0,
CTL_HW, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "machine",
SYSCTL_DESCR("Machine class"),
NULL, 0, machine, 0,
CTL_HW, HW_MACHINE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "model",
SYSCTL_DESCR("Machine model"),
NULL, 0, cpu_model, 0,
CTL_HW, HW_MODEL, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "ncpu",
SYSCTL_DESCR("Number of active CPUs"),
sysctl_hw_ncpu, 0, NULL, 0,
CTL_HW, HW_NCPU, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "byteorder",
SYSCTL_DESCR("System byte order"),
NULL, BYTE_ORDER, NULL, 0,
CTL_HW, HW_BYTEORDER, CTL_EOL);
u = ((u_int)physmem > (UINT_MAX / PAGE_SIZE)) ?
UINT_MAX : physmem * PAGE_SIZE;
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "physmem",
SYSCTL_DESCR("Bytes of physical memory"),
NULL, u, NULL, 0,
CTL_HW, HW_PHYSMEM, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, "usermem",
SYSCTL_DESCR("Bytes of non-kernel memory"),
sysctl_hw_usermem, 0, NULL, 0,
CTL_HW, HW_USERMEM, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "pagesize",
SYSCTL_DESCR("Software page size"),
NULL, PAGE_SIZE, NULL, 0,
CTL_HW, HW_PAGESIZE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "disknames",
SYSCTL_DESCR("List of disk devices present"),
sysctl_hw_disknames, 0, NULL, 0,
CTL_HW, HW_DISKNAMES, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRUCT, "diskstats",
SYSCTL_DESCR("Statistics on disk operation"),
sysctl_hw_diskstats, 0, NULL, 0,
CTL_HW, HW_DISKSTATS, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_STRING, "machine_arch",
SYSCTL_DESCR("Machine CPU class"),
NULL, 0, machine_arch, 0,
CTL_HW, HW_MACHINE_ARCH, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_INT, "alignbytes",
SYSCTL_DESCR("Alignment constraint for all possible "
"data types"),
NULL, ALIGNBYTES, NULL, 0,
CTL_HW, HW_ALIGNBYTES, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READWRITE|CTLFLAG_HEX,
CTLTYPE_STRING, "cnmagic",
SYSCTL_DESCR("Console magic key sequence"),
sysctl_hw_cnmagic, 0, NULL, CNS_LEN,
CTL_HW, HW_CNMAGIC, CTL_EOL);
q = (u_quad_t)physmem * PAGE_SIZE;
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
CTLTYPE_QUAD, "physmem64",
SYSCTL_DESCR("Bytes of physical memory"),
NULL, q, NULL, 0,
CTL_HW, HW_PHYSMEM64, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_QUAD, "usermem64",
SYSCTL_DESCR("Bytes of non-kernel memory"),
sysctl_hw_usermem, 0, NULL, 0,
CTL_HW, HW_USERMEM64, CTL_EOL);
}
#ifdef DEBUG
/*
* Debugging related system variables.
*/
struct ctldebug /* debug0, */ /* debug1, */ debug2, debug3, debug4;
struct ctldebug debug5, debug6, debug7, debug8, debug9;
struct ctldebug debug10, debug11, debug12, debug13, debug14;
struct ctldebug debug15, debug16, debug17, debug18, debug19;
static struct ctldebug *debugvars[CTL_DEBUG_MAXID] = {
&debug0, &debug1, &debug2, &debug3, &debug4,
&debug5, &debug6, &debug7, &debug8, &debug9,
&debug10, &debug11, &debug12, &debug13, &debug14,
&debug15, &debug16, &debug17, &debug18, &debug19,
};
/*
* this setup routine is a replacement for debug_sysctl()
*
* note that it creates several nodes per defined debug variable
*/
SYSCTL_SETUP(sysctl_debug_setup, "sysctl debug subtree setup")
{
struct ctldebug *cdp;
char nodename[20];
int i;
/*
* two ways here:
*
* the "old" way (debug.name -> value) which was emulated by
* the sysctl(8) binary
*
* the new way, which the sysctl(8) binary was actually using
node debug
node debug.0
string debug.0.name
int debug.0.value
int debug.name
*/
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_NODE, "debug", NULL,
NULL, 0, NULL, 0,
CTL_DEBUG, CTL_EOL);
for (i = 0; i < CTL_DEBUG_MAXID; i++) {
cdp = debugvars[i];
if (cdp->debugname == NULL || cdp->debugvar == NULL)
continue;
snprintf(nodename, sizeof(nodename), "debug%d", i);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_HIDDEN,
CTLTYPE_NODE, nodename, NULL,
NULL, 0, NULL, 0,
CTL_DEBUG, i, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_HIDDEN,
CTLTYPE_STRING, "name", NULL,
NULL, 0, cdp->debugname, 0,
CTL_DEBUG, i, CTL_DEBUG_NAME, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_HIDDEN,
CTLTYPE_INT, "value", NULL,
NULL, 0, cdp->debugvar, 0,
CTL_DEBUG, i, CTL_DEBUG_VALUE, CTL_EOL);
sysctl_createv(clog, 0, NULL, NULL,
CTLFLAG_PERMANENT,
CTLTYPE_INT, cdp->debugname, NULL,
NULL, 0, cdp->debugvar, 0,
CTL_DEBUG, CTL_CREATE, CTL_EOL);
}
}
#endif /* DEBUG */
/*
* ********************************************************************
* section 2: private node-specific helper routines.
* ********************************************************************
*/
/*
* sysctl helper routine for kern.maxvnodes. drain vnodes if
* new value is lower than desiredvnodes and then calls reinit
* routines that needs to adjust to the new value.
*/
static int
sysctl_kern_maxvnodes(SYSCTLFN_ARGS)
{
int error, new_vnodes, old_vnodes;
struct sysctlnode node;
new_vnodes = desiredvnodes;
node = *rnode;
node.sysctl_data = &new_vnodes;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
old_vnodes = desiredvnodes;
desiredvnodes = new_vnodes;
if (new_vnodes < old_vnodes) {
error = vfs_drainvnodes(new_vnodes, l->l_proc);
if (error) {
desiredvnodes = old_vnodes;
return (error);
}
}
vfs_reinit();
nchreinit();
return (0);
}
/*
* sysctl helper routine for rtc_offset - set time after changes
*/
static int
sysctl_kern_rtc_offset(SYSCTLFN_ARGS)
{
struct timeval tv, delta;
int s, error, new_rtc_offset;
struct sysctlnode node;
new_rtc_offset = rtc_offset;
node = *rnode;
node.sysctl_data = &new_rtc_offset;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
if (securelevel > 0)
return (EPERM);
if (rtc_offset == new_rtc_offset)
return (0);
/* if we change the offset, adjust the time */
s = splclock();
tv = time;
splx(s);
delta.tv_sec = 60*(new_rtc_offset - rtc_offset);
delta.tv_usec = 0;
timeradd(&tv, &delta, &tv);
rtc_offset = new_rtc_offset;
settime(&tv);
return (0);
}
/*
* sysctl helper routine for kern.maxvnodes. ensures that the new
* values are not too low or too high.
*/
static int
sysctl_kern_maxproc(SYSCTLFN_ARGS)
{
int error, nmaxproc;
struct sysctlnode node;
nmaxproc = maxproc;
node = *rnode;
node.sysctl_data = &nmaxproc;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
if (nmaxproc < 0 || nmaxproc >= PID_MAX)
return (EINVAL);
#ifdef __HAVE_CPU_MAXPROC
if (nmaxproc > cpu_maxproc())
return (EINVAL);
#endif
maxproc = nmaxproc;
return (0);
}
/*
* sysctl helper routine for kern.securelevel. ensures that the value
* only rises unless the caller has pid 1 (assumed to be init).
*/
static int
sysctl_kern_securelevel(SYSCTLFN_ARGS)
{
int newsecurelevel, error;
struct sysctlnode node;
newsecurelevel = securelevel;
node = *rnode;
node.sysctl_data = &newsecurelevel;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
if (newsecurelevel < securelevel && l && l->l_proc->p_pid != 1)
return (EPERM);
securelevel = newsecurelevel;
return (error);
}
/*
* sysctl helper function for kern.hostid. the hostid is a long, but
* we export it as an int, so we need to give it a little help.
*/
static int
sysctl_kern_hostid(SYSCTLFN_ARGS)
{
int error, inthostid;
struct sysctlnode node;
inthostid = hostid; /* XXX assumes sizeof int <= sizeof long */
node = *rnode;
node.sysctl_data = &inthostid;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
hostid = (unsigned)inthostid;
return (0);
}
/*
* sysctl helper function for kern.hostname and kern.domainnname.
* resets the relevant recorded length when the underlying name is
* changed.
*/
static int
sysctl_setlen(SYSCTLFN_ARGS)
{
int error;
error = sysctl_lookup(SYSCTLFN_CALL(rnode));
if (error || newp == NULL)
return (error);
switch (rnode->sysctl_num) {
case KERN_HOSTNAME:
hostnamelen = strlen((const char*)rnode->sysctl_data);
break;
case KERN_DOMAINNAME:
domainnamelen = strlen((const char*)rnode->sysctl_data);
break;
}
return (0);
}
/*
* sysctl helper routine for kern.clockrate. assembles a struct on
* the fly to be returned to the caller.
*/
static int
sysctl_kern_clockrate(SYSCTLFN_ARGS)
{
struct clockinfo clkinfo;
struct sysctlnode node;
clkinfo.tick = tick;
clkinfo.tickadj = tickadj;
clkinfo.hz = hz;
clkinfo.profhz = profhz;
clkinfo.stathz = stathz ? stathz : hz;
node = *rnode;
node.sysctl_data = &clkinfo;
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
/*
* sysctl helper routine for kern.file pseudo-subtree.
*/
static int
sysctl_kern_file(SYSCTLFN_ARGS)
{
int error;
size_t buflen;
struct file *fp;
char *start, *where;
start = where = oldp;
buflen = *oldlenp;
if (where == NULL) {
/*
* overestimate by 10 files
*/
*oldlenp = sizeof(filehead) + (nfiles + 10) * sizeof(struct file);
return (0);
}
/*
* first copyout filehead
*/
if (buflen < sizeof(filehead)) {
*oldlenp = 0;
return (0);
}
error = copyout(&filehead, where, sizeof(filehead));
if (error)
return (error);
buflen -= sizeof(filehead);
where += sizeof(filehead);
/*
* followed by an array of file structures
*/
LIST_FOREACH(fp, &filehead, f_list) {
if (buflen < sizeof(struct file)) {
*oldlenp = where - start;
return (ENOMEM);
}
error = copyout(fp, where, sizeof(struct file));
if (error)
return (error);
buflen -= sizeof(struct file);
where += sizeof(struct file);
}
*oldlenp = where - start;
return (0);
}
/*
* sysctl helper routine for kern.autonicetime and kern.autoniceval.
* asserts that the assigned value is in the correct range.
*/
static int
sysctl_kern_autonice(SYSCTLFN_ARGS)
{
int error, t = 0;
struct sysctlnode node;
node = *rnode;
t = *(int*)node.sysctl_data;
node.sysctl_data = &t;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
switch (node.sysctl_num) {
case KERN_AUTONICETIME:
if (t >= 0)
autonicetime = t;
break;
case KERN_AUTONICEVAL:
if (t < PRIO_MIN)
t = PRIO_MIN;
else if (t > PRIO_MAX)
t = PRIO_MAX;
autoniceval = t;
break;
}
return (0);
}
/*
* sysctl helper routine for kern.msgbufsize and kern.msgbuf. for the
* former it merely checks the message buffer is set up. for the latter,
* it also copies out the data if necessary.
*/
static int
sysctl_msgbuf(SYSCTLFN_ARGS)
{
char *where = oldp;
size_t len, maxlen;
long beg, end;
int error;
if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) {
msgbufenabled = 0;
return (ENXIO);
}
switch (rnode->sysctl_num) {
case KERN_MSGBUFSIZE: {
struct sysctlnode node = *rnode;
int msg_bufs = (int)msgbufp->msg_bufs;
node.sysctl_data = &msg_bufs;
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
case KERN_MSGBUF:
break;
default:
return (EOPNOTSUPP);
}
if (newp != NULL)
return (EPERM);
if (oldp == NULL) {
/* always return full buffer size */
*oldlenp = msgbufp->msg_bufs;
return (0);
}
error = 0;
maxlen = MIN(msgbufp->msg_bufs, *oldlenp);
/*
* First, copy from the write pointer to the end of
* message buffer.
*/
beg = msgbufp->msg_bufx;
end = msgbufp->msg_bufs;
while (maxlen > 0) {
len = MIN(end - beg, maxlen);
if (len == 0)
break;
error = copyout(&msgbufp->msg_bufc[beg], where, len);
if (error)
break;
where += len;
maxlen -= len;
/*
* ... then, copy from the beginning of message buffer to
* the write pointer.
*/
beg = 0;
end = msgbufp->msg_bufx;
}
return (error);
}
/*
* sysctl helper routine for kern.defcorename. in the case of a new
* string being assigned, check that it's not a zero-length string.
* (XXX the check in -current doesn't work, but do we really care?)
*/
static int
sysctl_kern_defcorename(SYSCTLFN_ARGS)
{
int error;
char newcorename[MAXPATHLEN];
struct sysctlnode node;
node = *rnode;
node.sysctl_data = &newcorename[0];
memcpy(node.sysctl_data, rnode->sysctl_data, MAXPATHLEN);
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
/*
* when sysctl_lookup() deals with a string, it's guaranteed
* to come back nul terminated. so there. :)
*/
if (strlen(newcorename) == 0)
return (EINVAL);
memcpy(rnode->sysctl_data, node.sysctl_data, MAXPATHLEN);
return (0);
}
/*
* sysctl helper routine for kern.cp_time node. adds up cpu time
* across all cpus.
*/
static int
sysctl_kern_cptime(SYSCTLFN_ARGS)
{
struct sysctlnode node = *rnode;
#ifndef MULTIPROCESSOR
if (namelen == 1) {
if (name[0] != 0)
return (ENOENT);
/*
* you're allowed to ask for the zero'th processor
*/
name++;
namelen--;
}
node.sysctl_data = curcpu()->ci_schedstate.spc_cp_time;
node.sysctl_size = sizeof(curcpu()->ci_schedstate.spc_cp_time);
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
#else /* MULTIPROCESSOR */
u_int64_t *cp_time = NULL;
int error, n = sysctl_ncpus(), i;
struct cpu_info *ci;
CPU_INFO_ITERATOR cii;
/*
* if you specifically pass a buffer that is the size of the
* sum, or if you are probing for the size, you get the "sum"
* of cp_time (and the size thereof) across all processors.
*
* alternately, you can pass an additional mib number and get
* cp_time for that particular processor.
*/
switch (namelen) {
case 0:
if (*oldlenp == sizeof(u_int64_t) * CPUSTATES || oldp == NULL) {
node.sysctl_size = sizeof(u_int64_t) * CPUSTATES;
n = -1; /* SUM */
}
else {
node.sysctl_size = n * sizeof(u_int64_t) * CPUSTATES;
n = -2; /* ALL */
}
break;
case 1:
if (name[0] < 0 || name[0] >= n)
return (ENOENT); /* ENOSUCHPROCESSOR */
node.sysctl_size = sizeof(u_int64_t) * CPUSTATES;
n = name[0];
/*
* adjust these so that sysctl_lookup() will be happy
*/
name++;
namelen--;
break;
default:
return (EINVAL);
}
cp_time = malloc(node.sysctl_size, M_TEMP, M_WAITOK|M_CANFAIL);
if (cp_time == NULL)
return (ENOMEM);
node.sysctl_data = cp_time;
memset(cp_time, 0, node.sysctl_size);
for (CPU_INFO_FOREACH(cii, ci)) {
if (n <= 0)
for (i = 0; i < CPUSTATES; i++)
cp_time[i] += ci->ci_schedstate.spc_cp_time[i];
/*
* if a specific processor was requested and we just
* did it, we're done here
*/
if (n == 0)
break;
/*
* if doing "all", skip to next cp_time set for next processor
*/
if (n == -2)
cp_time += CPUSTATES;
/*
* if we're doing a specific processor, we're one
* processor closer
*/
if (n > 0)
n--;
}
error = sysctl_lookup(SYSCTLFN_CALL(&node));
free(node.sysctl_data, M_TEMP);
return (error);
#endif /* MULTIPROCESSOR */
}
#if defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM)
/*
* sysctl helper routine for kern.sysvipc_info subtree.
*/
#define FILL_PERM(src, dst) do { \
(dst)._key = (src)._key; \
(dst).uid = (src).uid; \
(dst).gid = (src).gid; \
(dst).cuid = (src).cuid; \
(dst).cgid = (src).cgid; \
(dst).mode = (src).mode; \
(dst)._seq = (src)._seq; \
} while (/*CONSTCOND*/ 0);
#define FILL_MSG(src, dst) do { \
FILL_PERM((src).msg_perm, (dst).msg_perm); \
(dst).msg_qnum = (src).msg_qnum; \
(dst).msg_qbytes = (src).msg_qbytes; \
(dst)._msg_cbytes = (src)._msg_cbytes; \
(dst).msg_lspid = (src).msg_lspid; \
(dst).msg_lrpid = (src).msg_lrpid; \
(dst).msg_stime = (src).msg_stime; \
(dst).msg_rtime = (src).msg_rtime; \
(dst).msg_ctime = (src).msg_ctime; \
} while (/*CONSTCOND*/ 0)
#define FILL_SEM(src, dst) do { \
FILL_PERM((src).sem_perm, (dst).sem_perm); \
(dst).sem_nsems = (src).sem_nsems; \
(dst).sem_otime = (src).sem_otime; \
(dst).sem_ctime = (src).sem_ctime; \
} while (/*CONSTCOND*/ 0)
#define FILL_SHM(src, dst) do { \
FILL_PERM((src).shm_perm, (dst).shm_perm); \
(dst).shm_segsz = (src).shm_segsz; \
(dst).shm_lpid = (src).shm_lpid; \
(dst).shm_cpid = (src).shm_cpid; \
(dst).shm_atime = (src).shm_atime; \
(dst).shm_dtime = (src).shm_dtime; \
(dst).shm_ctime = (src).shm_ctime; \
(dst).shm_nattch = (src).shm_nattch; \
} while (/*CONSTCOND*/ 0)
static int
sysctl_kern_sysvipc(SYSCTLFN_ARGS)
{
void *where = oldp;
size_t *sizep = oldlenp;
#ifdef SYSVMSG
struct msg_sysctl_info *msgsi = NULL;
#endif
#ifdef SYSVSEM
struct sem_sysctl_info *semsi = NULL;
#endif
#ifdef SYSVSHM
struct shm_sysctl_info *shmsi = NULL;
#endif
size_t infosize, dssize, tsize, buflen;
void *buf = NULL;
char *start;
int32_t nds;
int i, error, ret;
if (namelen != 1)
return (EINVAL);
start = where;
buflen = *sizep;
switch (*name) {
case KERN_SYSVIPC_MSG_INFO:
#ifdef SYSVMSG
infosize = sizeof(msgsi->msginfo);
nds = msginfo.msgmni;
dssize = sizeof(msgsi->msgids[0]);
break;
#else
return (EINVAL);
#endif
case KERN_SYSVIPC_SEM_INFO:
#ifdef SYSVSEM
infosize = sizeof(semsi->seminfo);
nds = seminfo.semmni;
dssize = sizeof(semsi->semids[0]);
break;
#else
return (EINVAL);
#endif
case KERN_SYSVIPC_SHM_INFO:
#ifdef SYSVSHM
infosize = sizeof(shmsi->shminfo);
nds = shminfo.shmmni;
dssize = sizeof(shmsi->shmids[0]);
break;
#else
return (EINVAL);
#endif
default:
return (EINVAL);
}
/*
* Round infosize to 64 bit boundary if requesting more than just
* the info structure or getting the total data size.
*/
if (where == NULL || *sizep > infosize)
infosize = ((infosize + 7) / 8) * 8;
tsize = infosize + nds * dssize;
/* Return just the total size required. */
if (where == NULL) {
*sizep = tsize;
return (0);
}
/* Not enough room for even the info struct. */
if (buflen < infosize) {
*sizep = 0;
return (ENOMEM);
}
buf = malloc(min(tsize, buflen), M_TEMP, M_WAITOK);
memset(buf, 0, min(tsize, buflen));
switch (*name) {
#ifdef SYSVMSG
case KERN_SYSVIPC_MSG_INFO:
msgsi = (struct msg_sysctl_info *)buf;
msgsi->msginfo = msginfo;
break;
#endif
#ifdef SYSVSEM
case KERN_SYSVIPC_SEM_INFO:
semsi = (struct sem_sysctl_info *)buf;
semsi->seminfo = seminfo;
break;
#endif
#ifdef SYSVSHM
case KERN_SYSVIPC_SHM_INFO:
shmsi = (struct shm_sysctl_info *)buf;
shmsi->shminfo = shminfo;
break;
#endif
}
buflen -= infosize;
ret = 0;
if (buflen > 0) {
/* Fill in the IPC data structures. */
for (i = 0; i < nds; i++) {
if (buflen < dssize) {
ret = ENOMEM;
break;
}
switch (*name) {
#ifdef SYSVMSG
case KERN_SYSVIPC_MSG_INFO:
FILL_MSG(msqids[i], msgsi->msgids[i]);
break;
#endif
#ifdef SYSVSEM
case KERN_SYSVIPC_SEM_INFO:
FILL_SEM(sema[i], semsi->semids[i]);
break;
#endif
#ifdef SYSVSHM
case KERN_SYSVIPC_SHM_INFO:
FILL_SHM(shmsegs[i], shmsi->shmids[i]);
break;
#endif
}
buflen -= dssize;
}
}
*sizep -= buflen;
error = copyout(buf, start, *sizep);
/* If copyout succeeded, use return code set earlier. */
if (error == 0)
error = ret;
if (buf)
free(buf, M_TEMP);
return (error);
}
#undef FILL_PERM
#undef FILL_MSG
#undef FILL_SEM
#undef FILL_SHM
#endif /* defined(SYSVMSG) || defined(SYSVSEM) || defined(SYSVSHM) */
#if NPTY > 0
/*
* sysctl helper routine for kern.maxptys. ensures that any new value
* is acceptable to the pty subsystem.
*/
static int
sysctl_kern_maxptys(SYSCTLFN_ARGS)
{
int pty_maxptys(int, int); /* defined in kern/tty_pty.c */
int error, max;
struct sysctlnode node;
/* get current value of maxptys */
max = pty_maxptys(0, 0);
node = *rnode;
node.sysctl_data = &max;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
if (max != pty_maxptys(max, 1))
return (EINVAL);
return (0);
}
#endif /* NPTY > 0 */
/*
* sysctl helper routine for kern.sbmax. basically just ensures that
* any new value is not too small.
*/
static int
sysctl_kern_sbmax(SYSCTLFN_ARGS)
{
int error, new_sbmax;
struct sysctlnode node;
new_sbmax = sb_max;
node = *rnode;
node.sysctl_data = &new_sbmax;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
error = sb_max_set(new_sbmax);
return (error);
}
/*
* sysctl helper routine for kern.urandom node. picks a random number
* for you.
*/
static int
sysctl_kern_urnd(SYSCTLFN_ARGS)
{
#if NRND > 0
int v;
if (rnd_extract_data(&v, sizeof(v), RND_EXTRACT_ANY) == sizeof(v)) {
struct sysctlnode node = *rnode;
node.sysctl_data = &v;
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
else
return (EIO); /*XXX*/
#else
return (EOPNOTSUPP);
#endif
}
/*
* sysctl helper routine to do kern.lwp.* work.
*/
static int
sysctl_kern_lwp(SYSCTLFN_ARGS)
{
struct kinfo_lwp klwp;
struct proc *p;
struct lwp *l2;
char *where, *dp;
int pid, elem_size, elem_count;
int buflen, needed, error;
if (namelen == 1 && name[0] == CTL_QUERY)
return (sysctl_query(SYSCTLFN_CALL(rnode)));
dp = where = oldp;
buflen = where != NULL ? *oldlenp : 0;
error = needed = 0;
if (newp != NULL || namelen != 3)
return (EINVAL);
pid = name[0];
elem_size = name[1];
elem_count = name[2];
p = pfind(pid);
if (p == NULL)
return (ESRCH);
LIST_FOREACH(l2, &p->p_lwps, l_sibling) {
if (buflen >= elem_size && elem_count > 0) {
fill_lwp(l2, &klwp);
/*
* Copy out elem_size, but not larger than
* the size of a struct kinfo_proc2.
*/
error = copyout(&klwp, dp,
min(sizeof(klwp), elem_size));
if (error)
goto cleanup;
dp += elem_size;
buflen -= elem_size;
elem_count--;
}
needed += elem_size;
}
if (where != NULL) {
*oldlenp = dp - where;
if (needed > *oldlenp)
return (ENOMEM);
} else {
needed += KERN_LWPSLOP;
*oldlenp = needed;
}
return (0);
cleanup:
return (error);
}
/*
* sysctl helper routine for kern.forkfsleep node. ensures that the
* given value is not too large or two small, and is at least one
* timer tick if not zero.
*/
static int
sysctl_kern_forkfsleep(SYSCTLFN_ARGS)
{
/* userland sees value in ms, internally is in ticks */
extern int forkfsleep; /* defined in kern/kern_fork.c */
int error, timo, lsleep;
struct sysctlnode node;
lsleep = forkfsleep * 1000 / hz;
node = *rnode;
node.sysctl_data = &lsleep;
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
/* refuse negative values, and overly 'long time' */
if (lsleep < 0 || lsleep > MAXSLP * 1000)
return (EINVAL);
timo = mstohz(lsleep);
/* if the interval is >0 ms && <1 tick, use 1 tick */
if (lsleep != 0 && timo == 0)
forkfsleep = 1;
else
forkfsleep = timo;
return (0);
}
/*
* sysctl helper routine for kern.root_partition
*/
static int
sysctl_kern_root_partition(SYSCTLFN_ARGS)
{
int rootpart = DISKPART(rootdev);
struct sysctlnode node = *rnode;
node.sysctl_data = &rootpart;
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
/*
* sysctl helper function for kern.drivers
*/
static int
sysctl_kern_drivers(SYSCTLFN_ARGS)
{
int error;
size_t buflen;
struct kinfo_drivers kd;
char *start, *where;
const char *dname;
int i;
extern struct devsw_conv *devsw_conv;
extern int max_devsw_convs;
if (newp != NULL || namelen != 0)
return (EINVAL);
start = where = oldp;
buflen = *oldlenp;
if (where == NULL) {
*oldlenp = max_devsw_convs * sizeof kd;
return 0;
}
/*
* An array of kinfo_drivers structures
*/
error = 0;
for (i = 0; i < max_devsw_convs; i++) {
dname = devsw_conv[i].d_name;
if (dname == NULL)
continue;
if (buflen < sizeof kd) {
error = ENOMEM;
break;
}
memset(&kd, 0, sizeof(kd));
kd.d_bmajor = devsw_conv[i].d_bmajor;
kd.d_cmajor = devsw_conv[i].d_cmajor;
strlcpy(kd.d_name, dname, sizeof kd.d_name);
error = copyout(&kd, where, sizeof kd);
if (error != 0)
break;
buflen -= sizeof kd;
where += sizeof kd;
}
*oldlenp = where - start;
return error;
}
/*
* sysctl helper function for kern.file2
*/
static int
sysctl_kern_file2(SYSCTLFN_ARGS)
{
struct proc *p;
struct file *fp;
struct filedesc *fd;
struct kinfo_file kf;
char *dp;
u_int i, op;
size_t len, needed, elem_size, out_size;
int error, arg, elem_count;
if (namelen == 1 && name[0] == CTL_QUERY)
return (sysctl_query(SYSCTLFN_CALL(rnode)));
if (namelen != 4)
return (EINVAL);
error = 0;
dp = oldp;
len = (oldp != NULL) ? *oldlenp : 0;
op = name[0];
arg = name[1];
elem_size = name[2];
elem_count = name[3];
out_size = MIN(sizeof(kf), elem_size);
needed = 0;
if (elem_size < 1 || elem_count < 0)
return (EINVAL);
switch (op) {
case KERN_FILE_BYFILE:
/*
* doesn't use arg so it must be zero
*/
if (arg != 0)
return (EINVAL);
LIST_FOREACH(fp, &filehead, f_list) {
if (len >= elem_size && elem_count > 0) {
fill_file(&kf, fp, NULL, 0);
error = copyout(&kf, dp, out_size);
if (error)
break;
dp += elem_size;
len -= elem_size;
}
if (elem_count > 0) {
needed += elem_size;
if (elem_count != INT_MAX)
elem_count--;
}
}
break;
case KERN_FILE_BYPID:
if (arg < -1)
/* -1 means all processes */
return (EINVAL);
proclist_lock_read();
PROCLIST_FOREACH(p, &allproc) {
if (p->p_stat == SIDL)
/* skip embryonic processes */
continue;
if (arg > 0 && p->p_pid != arg)
/* pick only the one we want */
/* XXX want 0 to mean "kernel files" */
continue;
fd = p->p_fd;
for (i = 0; i < fd->fd_nfiles; i++) {
fp = fd->fd_ofiles[i];
if (fp == NULL || !FILE_IS_USABLE(fp))
continue;
if (len >= elem_size && elem_count > 0) {
fill_file(&kf, fd->fd_ofiles[i],
p, i);
error = copyout(&kf, dp, out_size);
if (error)
break;
dp += elem_size;
len -= elem_size;
}
if (elem_count > 0) {
needed += elem_size;
if (elem_count != INT_MAX)
elem_count--;
}
}
}
proclist_unlock_read();
break;
default:
return (EINVAL);
}
if (oldp == NULL)
needed += KERN_FILESLOP * elem_size;
*oldlenp = needed;
return (error);
}
static void
fill_file(struct kinfo_file *kp, const struct file *fp, struct proc *p, int i)
{
memset(kp, 0, sizeof(*kp));
kp->ki_fileaddr = PTRTOUINT64(fp);
kp->ki_flag = fp->f_flag;
kp->ki_iflags = fp->f_iflags;
kp->ki_ftype = fp->f_type;
kp->ki_count = fp->f_count;
kp->ki_msgcount = fp->f_msgcount;
kp->ki_usecount = fp->f_usecount;
kp->ki_fucred = PTRTOUINT64(fp->f_cred);
kp->ki_fuid = fp->f_cred->cr_uid;
kp->ki_fgid = fp->f_cred->cr_gid;
kp->ki_fops = PTRTOUINT64(fp->f_ops);
kp->ki_foffset = fp->f_offset;
kp->ki_fdata = PTRTOUINT64(fp->f_data);
/* vnode information to glue this file to something */
if (fp->f_type == DTYPE_VNODE) {
struct vnode *vp = (struct vnode *)fp->f_data;
kp->ki_vun = PTRTOUINT64(vp->v_un.vu_socket);
kp->ki_vsize = vp->v_size;
kp->ki_vtype = vp->v_type;
kp->ki_vtag = vp->v_tag;
kp->ki_vdata = PTRTOUINT64(vp->v_data);
}
/* process information when retrieved via KERN_FILE_BYPID */
if (p) {
kp->ki_pid = p->p_pid;
kp->ki_fd = i;
kp->ki_ofileflags = p->p_fd->fd_ofileflags[i];
}
}
static int
sysctl_doeproc(SYSCTLFN_ARGS)
{
struct eproc eproc;
struct kinfo_proc2 kproc2;
struct kinfo_proc *dp;
struct proc *p;
const struct proclist_desc *pd;
char *where, *dp2;
int type, op, arg;
u_int elem_size, elem_count;
size_t buflen, needed;
int error;
if (namelen == 1 && name[0] == CTL_QUERY)
return (sysctl_query(SYSCTLFN_CALL(rnode)));
dp = oldp;
dp2 = where = oldp;
buflen = where != NULL ? *oldlenp : 0;
error = 0;
needed = 0;
type = rnode->sysctl_num;
if (type == KERN_PROC) {
if (namelen != 2 && !(namelen == 1 && name[0] == KERN_PROC_ALL))
return (EINVAL);
op = name[0];
if (op != KERN_PROC_ALL)
arg = name[1];
else
arg = 0; /* Quell compiler warning */
elem_size = elem_count = 0; /* Ditto */
} else {
if (namelen != 4)
return (EINVAL);
op = name[0];
arg = name[1];
elem_size = name[2];
elem_count = name[3];
}
proclist_lock_read();
pd = proclists;
again:
PROCLIST_FOREACH(p, pd->pd_list) {
/*
* Skip embryonic processes.
*/
if (p->p_stat == SIDL)
continue;
/*
* TODO - make more efficient (see notes below).
* do by session.
*/
switch (op) {
case KERN_PROC_PID:
/* could do this with just a lookup */
if (p->p_pid != (pid_t)arg)
continue;
break;
case KERN_PROC_PGRP:
/* could do this by traversing pgrp */
if (p->p_pgrp->pg_id != (pid_t)arg)
continue;
break;
case KERN_PROC_SESSION:
if (p->p_session->s_sid != (pid_t)arg)
continue;
break;
case KERN_PROC_TTY:
if (arg == (int) KERN_PROC_TTY_REVOKE) {
if ((p->p_flag & P_CONTROLT) == 0 ||
p->p_session->s_ttyp == NULL ||
p->p_session->s_ttyvp != NULL)
continue;
} else if ((p->p_flag & P_CONTROLT) == 0 ||
p->p_session->s_ttyp == NULL) {
if ((dev_t)arg != KERN_PROC_TTY_NODEV)
continue;
} else if (p->p_session->s_ttyp->t_dev != (dev_t)arg)
continue;
break;
case KERN_PROC_UID:
if (p->p_ucred->cr_uid != (uid_t)arg)
continue;
break;
case KERN_PROC_RUID:
if (p->p_cred->p_ruid != (uid_t)arg)
continue;
break;
case KERN_PROC_GID:
if (p->p_ucred->cr_gid != (uid_t)arg)
continue;
break;
case KERN_PROC_RGID:
if (p->p_cred->p_rgid != (uid_t)arg)
continue;
break;
case KERN_PROC_ALL:
/* allow everything */
break;
default:
error = EINVAL;
goto cleanup;
}
if (type == KERN_PROC) {
if (buflen >= sizeof(struct kinfo_proc)) {
fill_eproc(p, &eproc);
error = copyout(p, &dp->kp_proc,
sizeof(struct proc));
if (error)
goto cleanup;
error = copyout(&eproc, &dp->kp_eproc,
sizeof(eproc));
if (error)
goto cleanup;
dp++;
buflen -= sizeof(struct kinfo_proc);
}
needed += sizeof(struct kinfo_proc);
} else { /* KERN_PROC2 */
if (buflen >= elem_size && elem_count > 0) {
fill_kproc2(p, &kproc2);
/*
* Copy out elem_size, but not larger than
* the size of a struct kinfo_proc2.
*/
error = copyout(&kproc2, dp2,
min(sizeof(kproc2), elem_size));
if (error)
goto cleanup;
dp2 += elem_size;
buflen -= elem_size;
elem_count--;
}
needed += elem_size;
}
}
pd++;
if (pd->pd_list != NULL)
goto again;
proclist_unlock_read();
if (where != NULL) {
if (type == KERN_PROC)
*oldlenp = (char *)dp - where;
else
*oldlenp = dp2 - where;
if (needed > *oldlenp)
return (ENOMEM);
} else {
needed += KERN_PROCSLOP;
*oldlenp = needed;
}
return (0);
cleanup:
proclist_unlock_read();
return (error);
}
/*
* sysctl helper routine for kern.proc_args pseudo-subtree.
*/
static int
sysctl_kern_proc_args(SYSCTLFN_ARGS)
{
struct ps_strings pss;
struct proc *p, *up = l->l_proc;
size_t len, upper_bound, xlen, i;
struct uio auio;
struct iovec aiov;
vaddr_t argv;
pid_t pid;
int nargv, type, error;
char *arg;
char *tmp;
if (namelen == 1 && name[0] == CTL_QUERY)
return (sysctl_query(SYSCTLFN_CALL(rnode)));
if (newp != NULL || namelen != 2)
return (EINVAL);
pid = name[0];
type = name[1];
switch (type) {
case KERN_PROC_ARGV:
case KERN_PROC_NARGV:
case KERN_PROC_ENV:
case KERN_PROC_NENV:
/* ok */
break;
default:
return (EINVAL);
}
/* check pid */
if ((p = pfind(pid)) == NULL)
return (EINVAL);
/* only root or same user change look at the environment */
if (type == KERN_PROC_ENV || type == KERN_PROC_NENV) {
if (up->p_ucred->cr_uid != 0) {
if (up->p_cred->p_ruid != p->p_cred->p_ruid ||
up->p_cred->p_ruid != p->p_cred->p_svuid)
return (EPERM);
}
}
if (oldp == NULL) {
if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV)
*oldlenp = sizeof (int);
else
*oldlenp = ARG_MAX; /* XXX XXX XXX */
return (0);
}
/*
* Zombies don't have a stack, so we can't read their psstrings.
* System processes also don't have a user stack.
*/
if (P_ZOMBIE(p) || (p->p_flag & P_SYSTEM) != 0)
return (EINVAL);
/*
* Lock the process down in memory.
*/
/* XXXCDC: how should locking work here? */
if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1))
return (EFAULT);
p->p_vmspace->vm_refcnt++; /* XXX */
/*
* Allocate a temporary buffer to hold the arguments.
*/
arg = malloc(PAGE_SIZE, M_TEMP, M_WAITOK);
/*
* Read in the ps_strings structure.
*/
aiov.iov_base = &pss;
aiov.iov_len = sizeof(pss);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = (vaddr_t)p->p_psstr;
auio.uio_resid = sizeof(pss);
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_rw = UIO_READ;
auio.uio_procp = NULL;
error = uvm_io(&p->p_vmspace->vm_map, &auio);
if (error)
goto done;
if (type == KERN_PROC_ARGV || type == KERN_PROC_NARGV)
memcpy(&nargv, (char *)&pss + p->p_psnargv, sizeof(nargv));
else
memcpy(&nargv, (char *)&pss + p->p_psnenv, sizeof(nargv));
if (type == KERN_PROC_NARGV || type == KERN_PROC_NENV) {
error = copyout(&nargv, oldp, sizeof(nargv));
*oldlenp = sizeof(nargv);
goto done;
}
/*
* Now read the address of the argument vector.
*/
switch (type) {
case KERN_PROC_ARGV:
/* XXX compat32 stuff here */
memcpy(&tmp, (char *)&pss + p->p_psargv, sizeof(tmp));
break;
case KERN_PROC_ENV:
memcpy(&tmp, (char *)&pss + p->p_psenv, sizeof(tmp));
break;
default:
return (EINVAL);
}
auio.uio_offset = (off_t)(unsigned long)tmp;
aiov.iov_base = &argv;
aiov.iov_len = sizeof(argv);
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_resid = sizeof(argv);
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_rw = UIO_READ;
auio.uio_procp = NULL;
error = uvm_io(&p->p_vmspace->vm_map, &auio);
if (error)
goto done;
/*
* Now copy in the actual argument vector, one page at a time,
* since we don't know how long the vector is (though, we do
* know how many NUL-terminated strings are in the vector).
*/
len = 0;
upper_bound = *oldlenp;
for (; nargv != 0 && len < upper_bound; len += xlen) {
aiov.iov_base = arg;
aiov.iov_len = PAGE_SIZE;
auio.uio_iov = &aiov;
auio.uio_iovcnt = 1;
auio.uio_offset = argv + len;
xlen = PAGE_SIZE - ((argv + len) & PAGE_MASK);
auio.uio_resid = xlen;
auio.uio_segflg = UIO_SYSSPACE;
auio.uio_rw = UIO_READ;
auio.uio_procp = NULL;
error = uvm_io(&p->p_vmspace->vm_map, &auio);
if (error)
goto done;
for (i = 0; i < xlen && nargv != 0; i++) {
if (arg[i] == '\0')
nargv--; /* one full string */
}
/*
* Make sure we don't copyout past the end of the user's
* buffer.
*/
if (len + i > upper_bound)
i = upper_bound - len;
error = copyout(arg, (char *)oldp + len, i);
if (error)
break;
if (nargv == 0) {
len += i;
break;
}
}
*oldlenp = len;
done:
uvmspace_free(p->p_vmspace);
free(arg, M_TEMP);
return (error);
}
/*
* sysctl helper routine for hw.usermem and hw.usermem64. values are
* calculate on the fly taking into account integer overflow and the
* current wired count.
*/
static int
sysctl_hw_usermem(SYSCTLFN_ARGS)
{
u_int ui;
u_quad_t uq;
struct sysctlnode node;
node = *rnode;
switch (rnode->sysctl_num) {
case HW_USERMEM:
if ((ui = physmem - uvmexp.wired) > (UINT_MAX / PAGE_SIZE))
ui = UINT_MAX;
else
ui *= PAGE_SIZE;
node.sysctl_data = &ui;
break;
case HW_USERMEM64:
uq = (u_quad_t)(physmem - uvmexp.wired) * PAGE_SIZE;
node.sysctl_data = &uq;
break;
default:
return (EINVAL);
}
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
/*
* sysctl helper routine for kern.cnmagic node. pulls the old value
* out, encoded, and stuffs the new value in for decoding.
*/
static int
sysctl_hw_cnmagic(SYSCTLFN_ARGS)
{
char magic[CNS_LEN];
int error;
struct sysctlnode node;
if (oldp)
cn_get_magic(magic, CNS_LEN);
node = *rnode;
node.sysctl_data = &magic[0];
error = sysctl_lookup(SYSCTLFN_CALL(&node));
if (error || newp == NULL)
return (error);
return (cn_set_magic(magic));
}
static int
sysctl_hw_ncpu(SYSCTLFN_ARGS)
{
int ncpu;
struct sysctlnode node;
ncpu = sysctl_ncpus();
node = *rnode;
node.sysctl_data = &ncpu;
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
/*
* ********************************************************************
* section 3: public helper routines that are used for more than one
* node
* ********************************************************************
*/
/*
* sysctl helper routine for the kern.root_device node and some ports'
* machdep.root_device nodes.
*/
int
sysctl_root_device(SYSCTLFN_ARGS)
{
struct sysctlnode node;
node = *rnode;
node.sysctl_data = root_device->dv_xname;
node.sysctl_size = strlen(root_device->dv_xname) + 1;
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
/*
* sysctl helper routine for kern.consdev, dependent on the current
* state of the console. also used for machdep.console_device on some
* ports.
*/
int
sysctl_consdev(SYSCTLFN_ARGS)
{
dev_t consdev;
struct sysctlnode node;
if (cn_tab != NULL)
consdev = cn_tab->cn_dev;
else
consdev = NODEV;
node = *rnode;
node.sysctl_data = &consdev;
node.sysctl_size = sizeof(consdev);
return (sysctl_lookup(SYSCTLFN_CALL(&node)));
}
/*
* ********************************************************************
* section 4: support for some helpers
* ********************************************************************
*/
/*
* Fill in a kinfo_proc2 structure for the specified process.
*/
static void
fill_kproc2(struct proc *p, struct kinfo_proc2 *ki)
{
struct tty *tp;
struct lwp *l;
struct timeval ut, st;
memset(ki, 0, sizeof(*ki));
ki->p_paddr = PTRTOUINT64(p);
ki->p_fd = PTRTOUINT64(p->p_fd);
ki->p_cwdi = PTRTOUINT64(p->p_cwdi);
ki->p_stats = PTRTOUINT64(p->p_stats);
ki->p_limit = PTRTOUINT64(p->p_limit);
ki->p_vmspace = PTRTOUINT64(p->p_vmspace);
ki->p_sigacts = PTRTOUINT64(p->p_sigacts);
ki->p_sess = PTRTOUINT64(p->p_session);
ki->p_tsess = 0; /* may be changed if controlling tty below */
ki->p_ru = PTRTOUINT64(p->p_ru);
ki->p_eflag = 0;
ki->p_exitsig = p->p_exitsig;
ki->p_flag = p->p_flag;
ki->p_pid = p->p_pid;
if (p->p_pptr)
ki->p_ppid = p->p_pptr->p_pid;
else
ki->p_ppid = 0;
ki->p_sid = p->p_session->s_sid;
ki->p__pgid = p->p_pgrp->pg_id;
ki->p_tpgid = NO_PGID; /* may be changed if controlling tty below */
ki->p_uid = p->p_ucred->cr_uid;
ki->p_ruid = p->p_cred->p_ruid;
ki->p_gid = p->p_ucred->cr_gid;
ki->p_rgid = p->p_cred->p_rgid;
ki->p_svuid = p->p_cred->p_svuid;
ki->p_svgid = p->p_cred->p_svgid;
memcpy(ki->p_groups, p->p_cred->pc_ucred->cr_groups,
min(sizeof(ki->p_groups), sizeof(p->p_cred->pc_ucred->cr_groups)));
ki->p_ngroups = p->p_cred->pc_ucred->cr_ngroups;
ki->p_jobc = p->p_pgrp->pg_jobc;
if ((p->p_flag & P_CONTROLT) && (tp = p->p_session->s_ttyp)) {
ki->p_tdev = tp->t_dev;
ki->p_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID;
ki->p_tsess = PTRTOUINT64(tp->t_session);
} else {
ki->p_tdev = NODEV;
}
ki->p_estcpu = p->p_estcpu;
ki->p_rtime_sec = p->p_rtime.tv_sec;
ki->p_rtime_usec = p->p_rtime.tv_usec;
ki->p_cpticks = p->p_cpticks;
ki->p_pctcpu = p->p_pctcpu;
ki->p_uticks = p->p_uticks;
ki->p_sticks = p->p_sticks;
ki->p_iticks = p->p_iticks;
ki->p_tracep = PTRTOUINT64(p->p_tracep);
ki->p_traceflag = p->p_traceflag;
memcpy(&ki->p_siglist, &p->p_sigctx.ps_siglist, sizeof(ki_sigset_t));
memcpy(&ki->p_sigmask, &p->p_sigctx.ps_sigmask, sizeof(ki_sigset_t));
memcpy(&ki->p_sigignore, &p->p_sigctx.ps_sigignore,sizeof(ki_sigset_t));
memcpy(&ki->p_sigcatch, &p->p_sigctx.ps_sigcatch, sizeof(ki_sigset_t));
ki->p_stat = p->p_stat; /* Will likely be overridden by LWP status */
ki->p_realstat = p->p_stat;
ki->p_nice = p->p_nice;
ki->p_xstat = p->p_xstat;
ki->p_acflag = p->p_acflag;
strncpy(ki->p_comm, p->p_comm,
min(sizeof(ki->p_comm), sizeof(p->p_comm)));
strncpy(ki->p_login, p->p_session->s_login,
min(sizeof ki->p_login - 1, sizeof p->p_session->s_login));
ki->p_nlwps = p->p_nlwps;
ki->p_nrlwps = p->p_nrlwps;
ki->p_realflag = p->p_flag;
if (p->p_stat == SIDL || P_ZOMBIE(p)) {
ki->p_vm_rssize = 0;
ki->p_vm_tsize = 0;
ki->p_vm_dsize = 0;
ki->p_vm_ssize = 0;
l = NULL;
} else {
struct vmspace *vm = p->p_vmspace;
ki->p_vm_rssize = vm_resident_count(vm);
ki->p_vm_tsize = vm->vm_tsize;
ki->p_vm_dsize = vm->vm_dsize;
ki->p_vm_ssize = vm->vm_ssize;
/* Pick a "representative" LWP */
l = proc_representative_lwp(p);
ki->p_forw = PTRTOUINT64(l->l_forw);
ki->p_back = PTRTOUINT64(l->l_back);
ki->p_addr = PTRTOUINT64(l->l_addr);
ki->p_stat = l->l_stat;
ki->p_flag |= l->l_flag;
ki->p_swtime = l->l_swtime;
ki->p_slptime = l->l_slptime;
if (l->l_stat == LSONPROC) {
KDASSERT(l->l_cpu != NULL);
ki->p_schedflags = l->l_cpu->ci_schedstate.spc_flags;
} else
ki->p_schedflags = 0;
ki->p_holdcnt = l->l_holdcnt;
ki->p_priority = l->l_priority;
ki->p_usrpri = l->l_usrpri;
if (l->l_wmesg)
strncpy(ki->p_wmesg, l->l_wmesg, sizeof(ki->p_wmesg));
ki->p_wchan = PTRTOUINT64(l->l_wchan);
}
if (p->p_session->s_ttyvp)
ki->p_eflag |= EPROC_CTTY;
if (SESS_LEADER(p))
ki->p_eflag |= EPROC_SLEADER;
/* XXX Is this double check necessary? */
if (P_ZOMBIE(p)) {
ki->p_uvalid = 0;
} else {
ki->p_uvalid = 1;
ki->p_ustart_sec = p->p_stats->p_start.tv_sec;
ki->p_ustart_usec = p->p_stats->p_start.tv_usec;
calcru(p, &ut, &st, 0);
ki->p_uutime_sec = ut.tv_sec;
ki->p_uutime_usec = ut.tv_usec;
ki->p_ustime_sec = st.tv_sec;
ki->p_ustime_usec = st.tv_usec;
ki->p_uru_maxrss = p->p_stats->p_ru.ru_maxrss;
ki->p_uru_ixrss = p->p_stats->p_ru.ru_ixrss;
ki->p_uru_idrss = p->p_stats->p_ru.ru_idrss;
ki->p_uru_isrss = p->p_stats->p_ru.ru_isrss;
ki->p_uru_minflt = p->p_stats->p_ru.ru_minflt;
ki->p_uru_majflt = p->p_stats->p_ru.ru_majflt;
ki->p_uru_nswap = p->p_stats->p_ru.ru_nswap;
ki->p_uru_inblock = p->p_stats->p_ru.ru_inblock;
ki->p_uru_oublock = p->p_stats->p_ru.ru_oublock;
ki->p_uru_msgsnd = p->p_stats->p_ru.ru_msgsnd;
ki->p_uru_msgrcv = p->p_stats->p_ru.ru_msgrcv;
ki->p_uru_nsignals = p->p_stats->p_ru.ru_nsignals;
ki->p_uru_nvcsw = p->p_stats->p_ru.ru_nvcsw;
ki->p_uru_nivcsw = p->p_stats->p_ru.ru_nivcsw;
timeradd(&p->p_stats->p_cru.ru_utime,
&p->p_stats->p_cru.ru_stime, &ut);
ki->p_uctime_sec = ut.tv_sec;
ki->p_uctime_usec = ut.tv_usec;
}
#ifdef MULTIPROCESSOR
if (l && l->l_cpu != NULL)
ki->p_cpuid = l->l_cpu->ci_cpuid;
else
#endif
ki->p_cpuid = KI_NOCPU;
}
/*
* Fill in a kinfo_lwp structure for the specified lwp.
*/
static void
fill_lwp(struct lwp *l, struct kinfo_lwp *kl)
{
kl->l_forw = PTRTOUINT64(l->l_forw);
kl->l_back = PTRTOUINT64(l->l_back);
kl->l_laddr = PTRTOUINT64(l);
kl->l_addr = PTRTOUINT64(l->l_addr);
kl->l_stat = l->l_stat;
kl->l_lid = l->l_lid;
kl->l_flag = l->l_flag;
kl->l_swtime = l->l_swtime;
kl->l_slptime = l->l_slptime;
if (l->l_stat == LSONPROC) {
KDASSERT(l->l_cpu != NULL);
kl->l_schedflags = l->l_cpu->ci_schedstate.spc_flags;
} else
kl->l_schedflags = 0;
kl->l_holdcnt = l->l_holdcnt;
kl->l_priority = l->l_priority;
kl->l_usrpri = l->l_usrpri;
if (l->l_wmesg)
strncpy(kl->l_wmesg, l->l_wmesg, sizeof(kl->l_wmesg));
kl->l_wchan = PTRTOUINT64(l->l_wchan);
#ifdef MULTIPROCESSOR
if (l->l_cpu != NULL)
kl->l_cpuid = l->l_cpu->ci_cpuid;
else
#endif
kl->l_cpuid = KI_NOCPU;
}
/*
* Fill in an eproc structure for the specified process.
*/
void
fill_eproc(struct proc *p, struct eproc *ep)
{
struct tty *tp;
struct lwp *l;
ep->e_paddr = p;
ep->e_sess = p->p_session;
ep->e_pcred = *p->p_cred;
ep->e_ucred = *p->p_ucred;
if (p->p_stat == SIDL || P_ZOMBIE(p)) {
ep->e_vm.vm_rssize = 0;
ep->e_vm.vm_tsize = 0;
ep->e_vm.vm_dsize = 0;
ep->e_vm.vm_ssize = 0;
/* ep->e_vm.vm_pmap = XXX; */
} else {
struct vmspace *vm = p->p_vmspace;
ep->e_vm.vm_rssize = vm_resident_count(vm);
ep->e_vm.vm_tsize = vm->vm_tsize;
ep->e_vm.vm_dsize = vm->vm_dsize;
ep->e_vm.vm_ssize = vm->vm_ssize;
/* Pick a "representative" LWP */
l = proc_representative_lwp(p);
if (l->l_wmesg)
strncpy(ep->e_wmesg, l->l_wmesg, WMESGLEN);
}
if (p->p_pptr)
ep->e_ppid = p->p_pptr->p_pid;
else
ep->e_ppid = 0;
ep->e_pgid = p->p_pgrp->pg_id;
ep->e_sid = ep->e_sess->s_sid;
ep->e_jobc = p->p_pgrp->pg_jobc;
if ((p->p_flag & P_CONTROLT) &&
(tp = ep->e_sess->s_ttyp)) {
ep->e_tdev = tp->t_dev;
ep->e_tpgid = tp->t_pgrp ? tp->t_pgrp->pg_id : NO_PGID;
ep->e_tsess = tp->t_session;
} else
ep->e_tdev = NODEV;
ep->e_xsize = ep->e_xrssize = 0;
ep->e_xccount = ep->e_xswrss = 0;
ep->e_flag = ep->e_sess->s_ttyvp ? EPROC_CTTY : 0;
if (SESS_LEADER(p))
ep->e_flag |= EPROC_SLEADER;
strncpy(ep->e_login, ep->e_sess->s_login, MAXLOGNAME);
}
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