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#!/bin/sh
test -x /usr/bin/cciss_vol_status || exit 0
# WARNING: For the hpsa driver, we only support /dev/sda through
# /dev/sdz and /dev/sg0 through /dev/sg9.
DEVICES=$(find /dev -type b \( -path '/dev/cciss/c*d0' \
-or \
-path '/dev/sd[a-z]' \
-or \
-path '/dev/sg[0-9]' \))
if [ -n "${DEVICES}" ]; then
#
# Unsupported devices will generate an error (to stderr) of the form,
#
# cciss_vol_status: /dev/sda: Unknown SCSI device.
#
# We want to ignore these, and fortunately, an exit code of zero
# is returned in this case. So we need only hide the output by
# redirecting stderr elsewhere. But, that also hides errors of the
# form,
#
# cciss_vol_status: open /dev/sda: Permission denied
#
# which we DO want to present to the user. So instead of sending
# stderr to stdout, we redirect it to a temporary file. We then
# show the content of the temporary file to the user if it
# contains errors other than "Unknown SCSI device."
#
TMPFILE=$( mktemp )
if [ $? -ne 0 ] || [ ! -f "${TMPFILE}" ]; then
echo "${0}: error creating temporary file." >&2
exit 2
fi
OUTPUT=$( /usr/bin/cciss_vol_status ${DEVICES} 2> "${TMPFILE}" )
if [ $? -ne 0 ]; then
printf "%s\n" "$OUTPUT"
rm -f "${TMPFILE}"
exit 1
fi
ERRORS=$( GREP_OPTIONS="" grep -v "Unknown SCSI device" "${TMPFILE}" )
rm -f "${TMPFILE}"
if [ -n "${ERRORS}" ]; then
echo "${ERRORS}" >&2
exit 3
fi
fi
exit 0
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