src/share/man/man7/sysctl.7 - diff

Return to sysctl.7 CVS log

Up to [cvs.NetBSD.org] / src / share / man / man7

Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.

Diff for /src/share/man/man7/sysctl.7 between version 1.95 and 1.105

version 1.95, 2015/11/23 23:23:25

version 1.105, 2017/01/01 23:59:19

Line 29

.\"

.\" @(#)sysctl.3 8.4 (Berkeley) 5/9/95

.\"

.Dd November 24, 2015

.Dd November 17, 2016

.Dt SYSCTL 7

.Os

.Sh NAME

Line 315 privilege may change the value.

.It kern.maxproc integer yes

.It kern.maxptys integer yes

.It kern.maxvnodes integer yes

.It kern.messages integer yes

.It kern.mbuf node not applicable

.It kern.memlock integer no

.It kern.memlock_range integer no

Line 398 A

Line 399 A

.Vt struct timeval

structure is returned.

This structure contains the time that the system was booted.

.It Li kern.bufq

This variable contains information on the

.Xr bufq 9

subsystem.

Currently, the only third level name implemented is

.Dv kern.bufq.strategies

which provides a list of buffer queue strategies currently available.

.It Li kern.buildinfo

When the kernel is built, the build environment may optionally provide

arbitrary information to be stored in this variable.

.\" .It Li kern.bufq

.\" XXX: Undocumented.

.It Li kern.ccpu ( Dv KERN_CCPU )

The scheduler exponential decay value.

.It Li kern.clockrate ( Dv KERN_CLOCKRATE )

Line 456 Mapping of CPU number to CPU id.

Line 462 Mapping of CPU number to CPU id.

.It Li kern.cp_time ( Dv KERN_CP_TIME )

Returns an array of

.Dv CPUSTATES

.Vt uint64_t Ns s.

.Vt uint64_t Ns s .

This array contains the

number of clock ticks spent in different CPU states.

On multi-processor systems, the sum across all CPUs is returned unless

Line 541 otherwise\ 0.

Line 547 otherwise\ 0.

Returns the number of

.Xr hardclock 9

ticks.

.It Li kern.hist

This variable contains kernel history data if the kernel was

configured for any of the options

.Dv UVHMIST ,

.Dv USB_DEBUG ,

.Dv BIOHIST ,

.Dv SCDEBUG .

(See

.Xr options 4

for more details.)

The third-level names correspond to each available history table.

The values of the history tables are in an internal format, and can be

decoded by the

.Xr vmstat 1

utility's

.Dv -U

and

.Dv u

options;

the -l option can be used to see which tables are available.

.It Li kern.hostid ( Dv KERN_HOSTID )

Get or set the host identifier.

This is aimed to replace the legacy

Line 739 Returns 1 if the

Line 766 Returns 1 if the

.St -p1003.1b-93

Memory Protection Option is available on this system,

otherwise\ 0.

.It Li kern.messages

Kernel console message verbosity.

See

.Sy \<sys/reboot.h\>

.Bl -column "verbosity" "setting" -offset indent

.It Sy Verbosity Setting

.It \ \ \ \ 0 Silent Sy AB_SILENT

.It \ \ \ \ 1 Quiet Sy AB_QUIET

.It \ \ \ \ 2 Normal Sy AB_NORMAL

.It \ \ \ \ 3 Verbose Sy AB_VERBOSE

.It \ \ \ \ 4 Debug Sy AB_DEBUG

.El

.It Li kern.module

Settings related to kernel modules.

The third level names for the settings are described below.

Line 1229 The currently defined protocols and name

Line 1268 The currently defined protocols and name

.It arp log_permanent_modify integer yes

.It arp log_unknown_network integer yes

.It arp log_wrong_iface integer yes

.It arp prune integer yes

.It arp refresh integer yes

.It carp allow integer yes

.It carp preempt integer yes

.It carp log integer yes

Line 1247 The currently defined protocols and name

Line 1284 The currently defined protocols and name

.It ip anonportmax integer yes

.It ip anonportmin integer yes

.It ip checkinterface integer yes

.It ip dad_count integer yes

.It ip directed-broadcast integer yes

.It ip do_loopback_cksum integer yes

.It ip forwarding integer yes

Line 1312 The variables are as follows:

Line 1350 The variables are as follows:

Failed ARP entry lifetime.

.It Li arp.keep

Valid ARP entry lifetime.

.It Li arp.prune

ARP cache pruning interval.

.It Li arp.refresh

ARP entry refresh interval.

.It Li carp.allow

If set to 0, incoming

.Xr carp 4

Line 1368 Currently, this must be disabled if ipna

Line 1402 Currently, this must be disabled if ipna

destination address to another local interface, or if addresses

are added to the loopback interface instead of the interface where

the packets for those packets are received.

.It Li ip.dad_count

The number of

.Xr arp 4

probes sent for Address Conflict Detection.

Set to 0 to disable this.

.It Li ip.directed-broadcast

If set to 1, enables directed broadcast behavior for the host.

.It Li ip.do_loopback_cksum

Line 1619 The currently defined protocols and name

Line 1658 The currently defined protocols and name

.It icmp6 rediraccept integer yes

.It icmp6 redirtimeout integer yes

.It ip6 accept_rtadv integer yes

.It ip6 addctlpolicy struct in6_addrpolicy no

.It ip6 anonportalgo.selected string yes

.It ip6 anonportalgo.available string yes

.It ip6 anonportalgo.reserve struct yes

Line 1774 The maximum number of fragments the node

Line 1814 The maximum number of fragments the node

\-1 means that the node will accept as many fragments as it receives.

The flag is provided basically for avoiding possible DoS attacks.

.It Li ip6.neighborgcthresh

Maximum number of entries in neighbor cache.

Maximum number of entries in neighbor cache per interface.

Set to negative to disable.

The default value is 2048.

.It Li ip6.redirect

Line 2419 The available third and fourth level nam

Line 2459 The available third and fourth level nam

.\".It Li security.pax.aslr.stack_len integer yes

.It Li security.pax.mprotect.enabled integer yes

.It Li security.pax.mprotect.global integer yes

.It Li security.pax.mprotect.ptrace integer yes

.It Li security.pax.segvguard.enabled integer yes

.It Li security.pax.segvguard.expiry_timeout integer yes

.It Li security.pax.segvguard.global integer yes

Line 2466 except those exempted with

Line 2507 except those exempted with

Otherwise, all programs will not get the PaX MPROTECT restrictions,

except those specifically marked as such with

.Xr paxctl 8 .

.It Li security.pax.mprotect.ptrace

This variable allows

.Xr ptrace 2

to override PaX MPROTECT permissions.

It can have the following values:

.Bl -tag -width XX -compact

.It 0

Does not let override any permissions.

.It 1

Disables PaX MPROTECT from processes that start executing while traced (default).

.It 2

Bypasses PaX MPROTECT for all processes being traced.

.El

.It Li security.pax.segvguard.enabled

Enable PaX Segvguard.

.Pp

CVSweb <webmaster@jp.NetBSD.org>