Fix shellcheck reported issues
This commit is contained in:
Darko Poljak
parent
74e3b26790
commit
2cefdaa1a5
1 changed files with 75 additions and 40 deletions
115
ccollect
115
ccollect
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@ -27,9 +27,9 @@ set -u
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#
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# Standard variables (stolen from cconf)
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#
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__pwd="$(pwd -P)"
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__mydir="${0%/*}"; __abs_mydir="$(cd "$__mydir" && pwd -P)"
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__myname=${0##*/}; __abs_myname="$__abs_mydir/$__myname"
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__mydir="${0%/*}"
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__abs_mydir="$(cd "$__mydir" && pwd -P)"
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__myname=${0##*/}
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#
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# where to find our configuration and temporary file
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@ -41,7 +41,8 @@ CPREEXEC="${CDEFAULTS}/pre_exec"
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CPOSTEXEC="${CDEFAULTS}/post_exec"
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CMARKER=".ccollect-marker"
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export TMP="$(mktemp "/tmp/${__myname}.XXXXXX")"
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TMP="$(mktemp "/tmp/${__myname}.XXXXXX")"
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export TMP
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CONTROL_PIPE="/tmp/${__myname}-control-pipe"
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VERSION="2.6"
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@ -76,6 +77,7 @@ LOCKFD=4
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lock_flock()
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{
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# $1 = source to backup
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# shellcheck disable=SC2059
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lockfile="${LOCKDIR}/$(printf "${LOCKFILE_PATTERN}" "$1")"
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eval "exec ${LOCKFD}> ${lockfile}"
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@ -85,6 +87,7 @@ lock_flock()
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unlock_flock()
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{
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# $1 = source to backup
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# shellcheck disable=SC2059
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lockfile="${LOCKDIR}/$(printf "${LOCKFILE_PATTERN}" "$1")"
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eval "exec ${LOCKFD}>&-"
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rm -f "${lockfile}"
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@ -96,6 +99,7 @@ unlock_flock()
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lock_mkdir()
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{
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# $1 = source to backup
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# shellcheck disable=SC2059
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lockfile="${LOCKDIR}/$(printf "${LOCKFILE_PATTERN}" "$1")"
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mkdir "${lockfile}" && return 0 || return 1
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@ -104,6 +108,7 @@ lock_mkdir()
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unlock_mkdir()
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{
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# $1 = source to backup
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# shellcheck disable=SC2059
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lockfile="${LOCKDIR}/$(printf "${LOCKFILE_PATTERN}" "$1")"
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rmdir "${lockfile}"
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@ -112,7 +117,7 @@ unlock_mkdir()
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#
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# determine locking tool: flock or mkdir
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#
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if $(which flock > /dev/null 2>&1)
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if command -v flock > /dev/null 2>&1
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then
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lockf="lock_flock"
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unlockf="unlock_flock"
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@ -137,6 +142,7 @@ LOGONLYERRORS=""
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# catch signals
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#
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TRAPFUNC="rm -f \"${TMP}\""
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# shellcheck disable=SC2064
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trap "${TRAPFUNC}" 1 2 15
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#
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@ -147,7 +153,7 @@ trap "${TRAPFUNC}" 1 2 15
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# see: http://www.tldp.org/LDP/abs/html/intandnonint.html
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_is_interactive()
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{
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[ -t 0 -o -p /dev/stdin ]
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[ -t 0 ] || [ -p /dev/stdin ]
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}
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#
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@ -163,26 +169,26 @@ delete_from_file()
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# dirs for deletion will be moved to this trash dir inside destination dir
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# - for fast mv operation
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trash="$(mktemp -d ".trash.XXXXXX")"
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while read to_remove; do
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while read -r to_remove; do
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mv "${to_remove}" "${trash}" ||
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_exit_err "Moving ${to_remove} to ${trash} failed."
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set -- "$@" "${to_remove}"
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if [ "${suffix}" ]; then
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to_remove_no_suffix="$(echo ${to_remove} | sed "s/$suffix\$//")"
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to_remove_no_suffix="$(echo "${to_remove}" | sed "s/$suffix\$//")"
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mv "${to_remove_no_suffix}" "${trash}" ||
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_exit_err "Moving ${to_remove_no_suffix} to ${trash} failed."
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set -- "$@" "${to_remove_no_suffix}"
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fi
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done < "${file}"
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_techo "Removing $@ in ${trash}..."
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_techo "Removing $* in ${trash}..."
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empty_dir=".empty-dir"
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mkdir "${empty_dir}" || _exit_err "Empty directory ${empty_dir} cannot be created."
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[ "${VVERBOSE}" ] && echo "Starting: rsync -a --delete ${empty_dir} ${trash}"
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# rsync needs ending slash for directory content
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rsync -a --delete "${empty_dir}/" "${trash}/" || _exit_err "Removing $@ failed."
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rsync -a --delete "${empty_dir}/" "${trash}/" || _exit_err "Removing $* failed."
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rmdir "${trash}" || _exit_err "Removing ${trash} directory failed"
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rmdir "${empty_dir}" || _exit_err "Removing ${empty_dir} directory failed"
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_techo "Removing $@ in ${trash} finished."
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_techo "Removing $* in ${trash} finished."
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}
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display_version()
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@ -232,7 +238,7 @@ unlock()
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# stdout version
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_techo_stdout()
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{
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echo "$(${DDATE}): $@"
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echo "$(${DDATE}): $*"
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}
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# syslog version
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@ -260,14 +266,16 @@ _techo()
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{
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if [ "${LOGLEVEL}" = "a" ]
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then
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set -- ${name:+"[${name}]"} $@
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# name is exported before calling this function
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# shellcheck disable=SC2154
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set -- ${name:+"[${name}]"} "$@"
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"${_techof}" "$@"
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fi
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}
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_techo_err()
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{
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_techo "Error: $@"
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_techo "Error: $*"
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}
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_exit_err()
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@ -368,7 +376,7 @@ else
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LOGLEVEL="a"
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fi
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if [ "${LOGFILE}" -o "${SYSLOG}" ]
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if [ "${LOGFILE}" ] || [ "${SYSLOG}" ]
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then
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if [ "${LOGONLYERRORS}" ]
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then
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@ -378,8 +386,7 @@ fi
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# check that MAX_JOBS is natural number > 0
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# empty string means run all in parallel
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echo "${MAX_JOBS}" | grep -q -E '^[1-9][0-9]*$|^$'
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if [ "$?" -ne 0 ]
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if ! echo "${MAX_JOBS}" | grep -q -E '^[1-9][0-9]*$|^$'
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then
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_exit_err "Invalid max jobs value \"${MAX_JOBS}\""
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fi
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@ -412,19 +419,22 @@ if [ "${USE_ALL}" = 1 ]; then
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( cd "${CSOURCES}" && ls -1 > "${TMP}" ) || \
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_exit_err "Listing of sources failed. Aborting."
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while read tmp; do
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eval export source_${no_sources}=\"${tmp}\"
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no_sources=$((${no_sources}+1))
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while read -r tmp; do
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eval export "source_${no_sources}=\"${tmp}\""
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no_sources=$((no_sources + 1))
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done < "${TMP}"
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else
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#
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# Get sources from command line
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#
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while [ "$#" -ge 1 ]; do
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eval arg=\"\$1\"; shift
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eval "arg=\"\$1\""
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shift
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eval export source_${no_sources}=\"${arg}\"
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no_sources="$((${no_sources}+1))"
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# arg is assigned in the eval above
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# shellcheck disable=SC2154
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eval export "source_${no_sources}=\"${arg}\""
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no_sources="$((no_sources + 1))"
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done
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fi
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@ -461,6 +471,7 @@ if [ "${PARALLEL}" ]; then
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# fd 5 is tied to control pipe
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eval "exec 5<>${CONTROL_PIPE}"
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TRAPFUNC="${TRAPFUNC}; rm -f \"${CONTROL_PIPE}\""
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# shellcheck disable=SC2064
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trap "${TRAPFUNC}" 0 1 2 15
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# determine how much parallel jobs to prestart
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@ -483,7 +494,7 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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# Get current source
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#
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eval export name=\"\$source_${source_no}\"
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source_no=$((${source_no}+1))
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source_no=$((source_no + 1))
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#
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# Start ourself, if we want parallel execution
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@ -498,12 +509,12 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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then
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# run prestart child if pending
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{ "$0" "${INTERVAL}" "${name}"; printf '\n' >&5; } &
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prestart=$((${prestart} - 1))
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prestart=$((prestart - 1))
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continue
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else
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# each time a child finishes we get a line from the pipe
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# and then launch another child
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while read line
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while read -r line
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do
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{ "$0" "${INTERVAL}" "${name}"; printf '\n' >&5; } &
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# get out of loop so we can contnue with main loop
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@ -557,6 +568,7 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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# redefine trap to also unlock (rm lockfile)
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TRAPFUNC="${TRAPFUNC}; unlock \"${name}\""
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# shellcheck disable=SC2064
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trap "${TRAPFUNC}" 1 2 15
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#
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@ -576,10 +588,10 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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for opt in verbose very_verbose summary exclude rsync_options \
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delete_incomplete rsync_failure_codes \
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mtime quiet_if_down ; do
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if [ -f "${backup}/${opt}" -o -f "${backup}/no_${opt}" ]; then
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eval c_$opt=\"${backup}/$opt\"
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if [ -f "${backup}/${opt}" ] || [ -f "${backup}/no_${opt}" ]; then
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eval "c_$opt=\"${backup}/$opt\""
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else
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eval c_$opt=\"${CDEFAULTS}/$opt\"
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eval "c_$opt=\"${CDEFAULTS}/$opt\""
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fi
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done
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@ -599,6 +611,8 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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#
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# Sort by ctime (default) or mtime (configuration option)
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#
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ -f "${c_mtime}" ] ; then
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TSORT="t"
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else
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@ -642,6 +656,8 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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#
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# Exclude list
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#
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ -f "${c_exclude}" ]; then
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set -- "$@" "--exclude-from=${c_exclude}"
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fi
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@ -649,6 +665,8 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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#
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# Output a summary
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#
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ -f "${c_summary}" ]; then
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set -- "$@" "--stats"
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fi
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@ -657,6 +675,8 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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# Verbosity for rsync, rm, and mkdir
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#
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VVERBOSE=""
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ -f "${c_very_verbose}" ]; then
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set -- "$@" "-vv"
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VVERBOSE="-v"
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@ -667,8 +687,10 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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#
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# Extra options for rsync provided by the user
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#
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ -f "${c_rsync_options}" ]; then
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while read line; do
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while read -r line; do
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# Trim line.
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ln=$(echo "${line}" | awk '{$1=$1;print;}')
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# Only if ln is non zero length string.
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@ -687,6 +709,8 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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# Check: source is up and accepting connections (before deleting old backups!)
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#
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if ! rsync "$@" "${source}" >/dev/null 2>"${TMP}" ; then
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ ! -f "${c_quiet_if_down}" ]; then
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cat "${TMP}"
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fi
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@ -706,10 +730,13 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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#
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# Check incomplete backups (needs echo to remove newlines)
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#
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# shellcheck disable=SC2010
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ls -1 | grep "${CMARKER}\$" > "${TMP}"; ret=$?
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if [ "$ret" -eq 0 ]; then
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_techo "Incomplete backups: $(echo $(cat "${TMP}"))"
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_techo "Incomplete backups: $(cat "${TMP}")"
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ -f "${c_delete_incomplete}" ]; then
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delete_from_file "${TMP}" "${CMARKER}" &
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fi
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@ -718,12 +745,15 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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#
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# Include current time in name, not the time when we began to remove above
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#
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export destination_name="${INTERVAL}.$(${CDATE}).$$-${source_no}"
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export destination_dir="${ddir}/${destination_name}"
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destination_name="${INTERVAL}.$(${CDATE}).$$-${source_no}"
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export destination_name
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destination_dir="${ddir}/${destination_name}"
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export destination_dir
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#
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# Check: maximum number of backups is reached?
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#
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# shellcheck disable=SC2010
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count="$(ls -1 | grep -c "^${INTERVAL}\\.")"
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_techo "Existing backups: ${count} Total keeping backups: ${c_interval}"
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@ -731,6 +761,7 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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if [ "${count}" -ge "${c_interval}" ]; then
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# Use oldest directory as new backup destination directory.
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# It need not to be deleted, rsync will sync its content.
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# shellcheck disable=SC2010
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oldest_bak=$(ls -${TSORT}1r | grep "^${INTERVAL}\\." | head -n 1 || \
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_exit_err "Listing oldest backup failed")
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_techo "Using ${oldest_bak} for destination dir ${destination_dir}"
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@ -739,14 +770,15 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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touch "${destination_dir}"
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# We have something to remove only if count > interval.
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remove="$((${count} - ${c_interval}))"
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remove="$((count - c_interval))"
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else
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_techo_err "Renaming oldest backup ${oldest_bak} to ${destination_dir} failed, removing it."
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remove="$((${count} - ${c_interval} + 1))"
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remove="$((count - c_interval + 1))"
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fi
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if [ "${remove}" -gt 0 ]; then
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_techo "Removing ${remove} backup(s)..."
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# shellcheck disable=SC2010
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ls -${TSORT}1r | grep "^${INTERVAL}\\." | head -n "${remove}" > "${TMP}" || \
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_exit_err "Listing old backups failed"
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@ -760,6 +792,7 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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# oldest existing destination directory.
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#
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dest_dir_name=$(basename "${destination_dir}")
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# shellcheck disable=SC2010
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last_dir="$(ls -${TSORT}p1 | grep '/$' | grep -v "${dest_dir_name}" | head -n 1)" || \
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_exit_err "Failed to list contents of ${ddir}."
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@ -793,8 +826,10 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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# Check if rsync exit code indicates failure.
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#
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fail=""
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# variable is assigned using eval
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# shellcheck disable=SC2154
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if [ -f "$c_rsync_failure_codes" ]; then
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while read code ; do
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while read -r code ; do
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if [ "$ret" = "$code" ]; then
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fail=1
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fi
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@ -831,10 +866,10 @@ while [ "${source_no}" -lt "${no_sources}" ]; do
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# Time calculation
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#
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end_s="$(${SDATE})"
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full_seconds="$((${end_s} - ${begin_s}))"
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hours="$((${full_seconds} / 3600))"
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minutes="$(((${full_seconds} % 3600) / 60))"
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seconds="$((${full_seconds} % 60))"
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full_seconds="$((end_s - begin_s))"
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hours="$((full_seconds / 3600))"
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minutes="$(((full_seconds % 3600) / 60))"
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seconds="$((full_seconds % 60))"
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_techo "Backup lasted: ${hours}:${minutes}:${seconds} (h:m:s)"
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