# # This is OCF Linux distribution query support # # Currently needed for the nfsserver RA which has some already # released RH specific stuff (/etc/sysconfig/nfs editing) # # These functions are intended to be POSIX-compliant for portability. # # systemd-based systems should all have an os-release file. _ETC_OS_RELEASE_FILE="/etc/os-release" _USR_OS_RELEASE_FILE="/usr/lib/os-release" # Legacy distro-specific files _DEBIAN_VERSION_FILE="/etc/debian_version" _REDHAT_RELEASE_FILE="/etc/redhat-release" _SUSE_RELEASE_FILE="/etc/SuSE-release" # Converts OS release ID to a standard form regardless of source. _process_os_release_id() { _os="$1" # Convert to lowercase, isolate distro name, remove whitespace _os=$(echo "$_os" \ | tr "[:upper:]" "[:lower:]" \ | sed -e "s|\(gnu/\)*linux||" -e "s/server//" \ -e "s/release.*//" -e "s/[[:digit:]].*//" \ -e "s/[[:blank:]]//") # Normalize known distros to os-release names case "$_os" in *centos*) _os="centos" ;; *debian*) _os="debian" ;; *fedora*) _os="fedora" ;; *redhat*|*rhel*|*scientific*) _os="rhel" ;; *opensuse*) _os="opensuse" ;; *suseenterprise*) _os="sles" ;; *ubuntu*) _os="ubuntu" ;; esac echo "$_os" } # Converts OS version ID to a form that ocf_version_cmp() can handle. # Strips any garbage. _process_os_version_id() { _ver="$1" _fmt="[[:digit:]][[:digit:].-]*[[:alnum:].\+-]*" echo "$_ver" | sed -e "s/[^[:digit:]]*\(${_fmt}\).*/\1/" } # Gets OS release ID (i.e., distro) or version ID from os-release file. # $_ETC_OS_RELEASE_FILE takes precedence over $_USR_OS_RELEASE_FILE. _get_val_from_os_release_file() { _key="" _value="" _func="" case "$1" in id) _key="ID" _func="_process_os_release_id" ;; version_id) _key="VERSION_ID" _func="_process_os_version_id" ;; esac if [ -n "$_key" ]; then if [ -f "$_ETC_OS_RELEASE_FILE" ]; then _value=$(awk -F "=" -v k="$_key" '$1 == k {print $2}' \ "$_ETC_OS_RELEASE_FILE" | tr -d \") fi if [ -z "$_value" ] && [ -f "$_USR_OS_RELEASE_FILE" ]; then _value=$(awk -F "=" -v k="$_key" '$1 == k {print $2}' \ "$_USR_OS_RELEASE_FILE" | tr -d \") fi fi # Ensure the value is in the correct format [ -n "$_func" ] && _value=$("$_func" "$_value") echo "$_value" } # Gets OS release ID from lsb_release command or legacy *-release files _get_os_from_legacy_source() { _os="" if which lsb_release >/dev/null 2>&1; then _os=$(lsb_release -si) elif [ -f "$_DEBIAN_VERSION_FILE" ]; then _os="debian" elif [ -f "$_REDHAT_RELEASE_FILE" ]; then _os=$(head -n 1 "$_REDHAT_RELEASE_FILE") elif [ -f "$_SUSE_RELEASE_FILE" ]; then _os=$(head -n 1 "$_SUSE_RELEASE_FILE") else _os=$(uname -s) fi _process_os_release_id "$_os" } # Gets OS version from lsb_release command or legacy *-release files _get_version_from_legacy_source() { _ver="" if which lsb_release >/dev/null 2>&1; then _ver=$(lsb_release -sr) elif [ -f "$_DEBIAN_VERSION_FILE" ]; then _ver=$(cat "$_DEBIAN_VERSION_FILE") elif [ -f "$_REDHAT_RELEASE_FILE" ]; then _ver=$(head -1 "$_REDHAT_RELEASE_FILE") elif [ -f "$_SUSE_RELEASE_FILE" ]; then _ver=$(awk '$1 == "VERSION" {print $3}' "$_SUSE_RELEASE_FILE") _patchlevel=$(awk '$1 == "PATCHLEVEL" {print $3}' \ "$_SUSE_RELEASE_FILE") [ -n "$_patchlevel" ] && _ver="${_ver}.${_patchlevel}" else _ver=$(uname -r) fi _process_os_version_id "$_ver" } # Prints OS release ID (i.e., distro name) get_release_id() { _os=$(_get_val_from_os_release_file id) if [ -z "$_os" ]; then _os=$(_get_os_from_legacy_source) fi echo "$_os" } # Prints OS version ID get_os_version_id() { _ver=$(_get_val_from_os_release_file version_id) if [ -z "$_ver" ] || [ "$(get_release_id)" = "debian" ]; then # Debian only includes major release in os-release. # $_DEBIAN_VERSION_FILE has ${major}.${minor}. _ver=$(_get_version_from_legacy_source) fi echo "$_ver" } # Returns true if the OS is Debian-based, otherwise false is_debian_based() { get_release_id | grep -i -e "debian" -e "ubuntu" >/dev/null 2>&1 } # Returns true if the OS is Red Hat-based, otherwise false is_redhat_based() { get_release_id | grep -i -e "centos" -e "fedora" -e "redhat" -e "rhel" \ -e "scientific" >/dev/null 2>&1 } # Returns true if the OS is SUSE-based, otherwise false is_suse_based() { get_release_id | grep -i -e "sles" -e "suse" >/dev/null 2>&1 } # Sets global variables OS and VER. # get_os_ver() is currently unused upstream; maintained for backwards # compatibility. get_os_ver() { OS=$(get_release_id) VER=$(get_os_version_id) }