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crashinfo: add "batch" mode and use it during boot

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In batch mode, most messages go into the core.txt.N file instead of stdout.

Reviewed by:	jhb
MFC after:	3 days
Sponsored by:	Dell EMC
Differential Revision:	https://reviews.freebsd.org/D10429
This commit is contained in:
Eric van Gyzen 2017-06-01 21:23:04 +00:00
parent 5acae76adf
commit 1f1ed24cc5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=319477
3 changed files with 24 additions and 7 deletions
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2
etc/rc.d/savecore
View File

@ -70,7 +70,7 @@ savecore_start()
if savecore -C "${dev}" >/dev/null; then
savecore ${savecore_flags} ${dumpdir} ${dumpdev}
if checkyesno crashinfo_enable; then
${crashinfo_program} -d ${dumpdir}
${crashinfo_program} -b -d ${dumpdir}
fi
sync
else

8
usr.sbin/crashinfo/crashinfo.8
View File

@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd June 28, 2008
.Dd April 19, 2017
.Dt CRASHINFO 8
.Os
.Sh NAME
@ -88,6 +88,12 @@ and
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl b
Run in batch mode. Write most messages to the
.Pa core.txt.XX
file instead of the terminal. This flag is used when
.Nm
is run during boot.
.It Fl d Ar crashdir
Specify an alternate core dump directory.
The default crash dump directory is

19
usr.sbin/crashinfo/crashinfo.sh
View File

@ -31,7 +31,8 @@
usage()
{
echo "usage: crashinfo [-d crashdir] [-n dumpnr] [-k kernel] [core]"
echo "usage: crashinfo [-b] [-d crashdir] [-n dumpnr]" \
"[-k kernel] [core]"
exit 1
}
@ -93,12 +94,16 @@ find_kernel()
done
}
BATCH=false
CRASHDIR=/var/crash
DUMPNR=
KERNEL=
while getopts "d:n:k:" opt; do
while getopts "bd:n:k:" opt; do
case "$opt" in
b)
BATCH=true
;;
d)
CRASHDIR=$OPTARG
;;
@ -153,6 +158,11 @@ INFO=$CRASHDIR/info.$DUMPNR
FILE=$CRASHDIR/core.txt.$DUMPNR
HOSTNAME=`hostname`
if $BATCH; then
echo "Writing crash summary to $FILE."
exec > $FILE 2>&1
fi
find_gdb
if [ -z "$GDB" ]; then
echo "Unable to find a kernel debugger."
@ -181,8 +191,6 @@ elif [ ! -e $KERNEL ]; then
exit 1
fi
echo "Writing crash summary to $FILE."
umask 077
# Simulate uname
@ -191,7 +199,10 @@ osrelease=$(gdb_command $KERNEL 'printf "%s", osrelease')
version=$(gdb_command $KERNEL 'printf "%s", version' | tr '\t\n' ' ')
machine=$(gdb_command $KERNEL 'printf "%s", machine')
if ! $BATCH; then
echo "Writing crash summary to $FILE."
exec > $FILE 2>&1
fi
echo "$HOSTNAME dumped core - see $VMCORE"
echo