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ccc806a049
We have somewhat twisted logic to determine actions for dumpdev considering three sources of information: * kenv "dumpdev" tunnable supposed to point to specific device; * /etc/defaults/rc.conf "dumpdev" variable; * /etc/rc.conf that may be unset or set to "NO", "AUTO" or device name. For CURRENT without any setting in kenv or /etc/rc.conf the default is "AUTO". For STABLE branches the default is "NO". Current implementation breaks for STABLE branches if kenv points to specific device but /etc/rc.conf does not set "dumpdev" at all. Let us fix it commenting out "dumpdev" in /etc/defaults/rc.conf for STABLE branches and making the code to consult kenv if "dumpdev" is not set elsewhere. MFC-after: 1 month
101 lines
1.7 KiB
Bash
Executable file
101 lines
1.7 KiB
Bash
Executable file
#!/bin/sh
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#
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# $FreeBSD$
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#
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# PROVIDE: dumpon
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# BEFORE: disks
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# KEYWORD: nojail
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. /etc/rc.subr
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name="dumpon"
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desc="Dump kernel corefiles from swap to disk"
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start_cmd="dumpon_start"
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stop_cmd="dumpon_stop"
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dumpon_try()
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{
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local flags
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flags=${dumpon_flags}
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if [ -n "${dumppubkey}" ]; then
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warn "The dumppubkey variable is deprecated. Use dumpon_flags."
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flags="${flags} -k ${dumppubkey}"
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fi
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/sbin/dumpon ${flags} "${1}"
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if [ $? -eq 0 ]; then
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# Make a symlink in devfs for savecore
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ln -fs "${1}" /dev/dumpdev
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return 0
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fi
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warn "unable to specify $1 as a dump device"
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return 1
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}
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dumpon_warn_unencrypted()
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{
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if [ -n "${dumppubkey}" ]; then
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return
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fi
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for flag in ${dumpon_flags}; do
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if [ $flag = -k ]; then
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return
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fi
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done
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warn "Kernel dumps will be written to the swap partition without encryption."
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}
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dumpon_start()
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{
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# Enable dumpdev so that savecore can see it. Enable it
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# early so a crash early in the boot process can be caught.
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#
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case ${dumpdev} in
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[Nn][Oo])
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;;
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[Aa][Uu][Tt][Oo] | '')
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root_hold_wait
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dev=$(/bin/kenv -q dumpdev)
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if [ -n "${dev}" ] ; then
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dumpon_try "${dev}"
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return $?
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fi
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if [ -z ${dumpdev} ] ; then
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return
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fi
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while read dev mp type more ; do
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[ "${type}" = "swap" ] || continue
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case ${dev} in
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*.bde|*.eli)
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dumpon_warn_unencrypted
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dev=${dev%.*}
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;;
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esac
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[ -c "${dev}" ] || continue
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dumpon_try "${dev}" 2>/dev/null && return 0
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done </etc/fstab
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echo "No suitable dump device was found." 1>&2
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return 1
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;;
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*)
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root_hold_wait
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dumpon_try "${dumpdev}"
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;;
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esac
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}
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dumpon_stop()
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{
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case ${dumpdev} in
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[Nn][Oo])
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;;
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*)
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rm -f /dev/dumpdev
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/sbin/dumpon -v off
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;;
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esac
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}
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load_rc_config $name
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run_rc_command "$1"
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