Implement -m option to savecore(8) that allows to limit number of kernel

dumps stored. Once the limit is reached it restarts from 0.

Reviewed by:	avg
Obtained from:	WHEEL Systems

1 files changed, 9 insertions, 2 deletions

diff --git a/sbin/savecore/savecore.8 b/sbin/savecore/savecore.8
index 3e22f5ad8ba9..c7d7e953682b 100644
--- a/sbin/savecore/savecore.8
+++ b/sbin/savecore/savecore.8
@@ -28,7 +28,7 @@
 .\"     From: @(#)savecore.8	8.1 (Berkeley) 6/5/93
 .\" $FreeBSD$
 .\"
-.Dd December 14, 2012
+.Dd December 17, 2012
 .Dt SAVECORE 8
 .Os
 .Sh NAME
@@ -45,6 +45,7 @@
 .Op Ar device ...
 .Nm
 .Op Fl fkvz
+.Op Fl m Ar maxdumps
 .Op Ar directory Op Ar device ...
 .Sh DESCRIPTION
 The
@@ -59,7 +60,7 @@ and enters a reboot message and information about the core dump into
 the system log.
 .Pp
 The options are as follows:
-.Bl -tag -width indent
+.Bl -tag -width ".Fl m Ar maxdumps"
 .It Fl C
 Check to see if a dump exists,
 and display a brief message to indicate the status.
@@ -77,6 +78,12 @@ Force a dump to be taken even if either the dump was cleared or if the
 dump header information is inconsistent.
 .It Fl k
 Do not clear the dump after saving it.
+.It Fl m Ar maxdumps
+Maximum number of dumps to store.
+Once the number of stored dumps is equal to
+.Ar maxdumps
+the counter will restart from
+.Dv 0 .
 .It Fl v
 Print out some additional debugging information.
 Specify twice for more information.