Bring the dumpon(8) man page closer to reality:

- dumpon utility has not used kern.dumpdev sysctl
      since rev. 1.14 (sbin/dumpon/dumpon.c) when phk@
      updated it to use the DIOCSKERNELDUMP ioctl [1]
    - remove obsolete reference to sysctl(3)

While I am there, fix two style nits:

    - use .Nm instead of `dumpon'
    - change NOTES to IMPLEMENTATION NOTES, to bring
      it in line with recommended section headings in
      mdoc(7)

Original patch by: Martin Faxer <gmh003532brfmasthugget.se> [1]

PR: docs/39293
Approved and Reviewed by: des (mentor), re (scottl, bmah)
This commit is contained in:
Hiten Pandya 2003-05-07 19:37:51 +00:00
parent 924a7003b0
commit 8340d5bcae
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=114811

View File

@ -72,7 +72,7 @@ The
flag causes
.Nm
to be verbose about its activity.
.Sh NOTES
.Sh IMPLEMENTATION NOTES
Since a
.Xr panic 9
condition may occur in a situation
@ -86,18 +86,23 @@ should be used as the dump device.
.Pp
The
.Nm
utility operates by setting the
.Xr sysctl 3
MIB variable
.Dq kern.dumpdev
to the device number of the designated
utility operates by opening
.Ar special_file
or to
.Dv NODEV
(meaning that no dumps are to be taken) if
and making a
.Dv DIOCSKERNELDUMP
.Xr ioctl 2
request on it to save kernel crash dumps.
If
.Ar special_file
is the text string:
.Dq Li off .
.Dq Li off ,
.Nm
performs a
.Dv DIOCSKERNELDUMP
.Xr ioctl 2
on
.Pa /dev/null
and thus instructs the kernel not to save crash dumps.
.Pp
Since
.Nm
@ -108,7 +113,6 @@ variable of
must be used to enable dumps for system panics which occur
during kernel initialization.
.Sh SEE ALSO
.Xr sysctl 3 ,
.Xr fstab 5 ,
.Xr rc.conf 5 ,
.Xr config 8 ,