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#!/bin/sh
#-
# Copyright (c) 2010 iXsystems, Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
# functions.sh
# Library of functions which pc-sysinstall may call upon
# Function which displays the help-index file
display_help()
{
if [ -e "${PROGDIR}/doc/help-index" ]
then
cat ${PROGDIR}/doc/help-index
else
echo "Error: ${PROGDIR}/doc/help-index not found"
exit 1
fi
};
# Function which displays the help for a specified command
display_command_help()
{
if [ -z "$1" ]
then
echo "Error: No command specified to display help for"
exit 1
fi
if [ -e "${PROGDIR}/doc/help-${1}" ]
then
cat ${PROGDIR}/doc/help-${1}
else
echo "Error: ${PROGDIR}/doc/help-${1} not found"
exit 1
fi
};
# Function to convert bytes to megabytes
convert_byte_to_megabyte()
{
if [ -z "${1}" ]
then
echo "Error: No bytes specified!"
exit 1
fi
expr -e ${1} / 1048576
};
# Function to convert blocks to megabytes
convert_blocks_to_megabyte()
{
if [ -z "${1}" ] ; then
echo "Error: No blocks specified!"
exit 1
fi
expr -e ${1} / 2048
};
# Takes $1 and strips the whitespace out of it, returns VAL
strip_white_space()
{
if [ -z "${1}" ]
then
echo "Error: No value setup to strip whitespace from!"
exit 1
fi
VAL=`echo "$1" | tr -d ' '`
export VAL
};
# Displays an error message and exits with error 1
exit_err()
{
# Echo the message for the users benefit
echo "$1"
# Save this error to the log file
echo "${1}" >>$LOGOUT
# Check if we need to unmount any file-systems after this failure
unmount_all_filesystems_failure
echo "For more details see log file: $LOGOUT"
exit 1
};
# Run-command, don't halt if command exits with non-0
rc_nohalt()
{
CMD="$1"
if [ -z "${CMD}" ]
then
exit_err "Error: missing argument in rc_nohalt()"
fi
echo "Running: ${CMD}" >>${LOGOUT}
${CMD} >>${LOGOUT} 2>>${LOGOUT}
};
# Run-command, halt if command exits with non-0
rc_halt()
{
CMD="$1"
if [ -z "${CMD}" ]
then
exit_err "Error: missing argument in rc_halt()"
fi
echo "Running: ${CMD}" >>${LOGOUT}
${CMD} >>${LOGOUT} 2>>${LOGOUT}
STATUS="$?"
if [ "${STATUS}" != "0" ]
then
exit_err "Error ${STATUS}: ${CMD}"
fi
};
# Run-command w/echo to screen, halt if command exits with non-0
rc_halt_echo()
{
CMD="$1"
if [ -z "${CMD}" ]
then
exit_err "Error: missing argument in rc_halt_echo()"
fi
echo "Running: ${CMD}" >>${LOGOUT}
${CMD} 2>&1 | tee -a ${LOGOUT}
STATUS="$?"
if [ "$STATUS" != "0" ]
then
exit_err "Error ${STATUS}: $CMD"
fi
};
# Run-command w/echo, don't halt if command exits with non-0
rc_nohalt_echo()
{
CMD="$1"
if [ -z "${CMD}" ]
then
exit_err "Error: missing argument in rc_nohalt_echo()"
fi
echo "Running: ${CMD}" >>${LOGOUT}
${CMD} 2>&1 | tee -a ${LOGOUT}
};
# Echo to the screen and to the log
echo_log()
{
STR="$1"
if [ -z "${STR}" ]
then
exit_err "Error: missing argument in echo_log()"
fi
echo "${STR}" | tee -a ${LOGOUT}
};
# Make sure we have a numeric
is_num() {
expr $1 + 1 2>/dev/null
return $?
}
# Function which uses "fetch" to download a file, and display a progress report
fetch_file()
{
FETCHFILE="$1"
FETCHOUTFILE="$2"
EXITFAILED="$3"
SIZEFILE="${TMPDIR}/.fetchSize"
EXITFILE="${TMPDIR}/.fetchExit"
rm ${SIZEFILE} 2>/dev/null >/dev/null
rm ${FETCHOUTFILE} 2>/dev/null >/dev/null
fetch -s "${FETCHFILE}" >${SIZEFILE}
SIZE="`cat ${SIZEFILE}`"
SIZE="`expr ${SIZE} / 1024`"
echo "FETCH: ${FETCHFILE}"
echo "FETCH: ${FETCHOUTFILE}" >>${LOGOUT}
( fetch -o ${FETCHOUTFILE} "${FETCHFILE}" >/dev/null 2>/dev/null ; echo "$?" > ${EXITFILE} ) &
PID="$!"
while
z=1
do
if [ -e "${FETCHOUTFILE}" ]
then
DSIZE=`du -k ${FETCHOUTFILE} | tr -d '\t' | cut -d '/' -f 1`
if [ $(is_num "$DSIZE") ] ; then
if [ $SIZE -lt $DSIZE ] ; then DSIZE="$SIZE"; fi
echo "SIZE: ${SIZE} DOWNLOADED: ${DSIZE}"
echo "SIZE: ${SIZE} DOWNLOADED: ${DSIZE}" >>${LOGOUT}
fi
fi
# Check if the download is finished
ps -p ${PID} >/dev/null 2>/dev/null
if [ "$?" != "0" ]
then
break;
fi
sleep 2
done
echo "FETCHDONE"
EXIT="`cat ${EXITFILE}`"
if [ "${EXIT}" != "0" -a "$EXITFAILED" = "1" ]
then
exit_err "Error: Failed to download ${FETCHFILE}"
fi
return $EXIT
};
# Function to return a the zpool name for this device
get_zpool_name()
{
DEVICE="$1"
# Set the base name we use for zpools
BASENAME="tank"
if [ ! -d "${TMPDIR}/.zpools" ] ; then
mkdir -p ${TMPDIR}/.zpools
fi
if [ -e "${TMPDIR}/.zpools/${DEVICE}" ] ; then
cat ${TMPDIR}/.zpools/${DEVICE}
return 0
else
# Need to generate a zpool name for this device
NUM=`ls ${TMPDIR}/.zpools/ | wc -l | sed 's| ||g'`
NEWNAME="${BASENAME}${NUM}"
echo "$NEWNAME" >${TMPDIR}/.zpools/${DEVICE}
echo "${NEWNAME}"
return
fi
};
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