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Diffstat (limited to '')
| -rw-r--r-- | heartbeat/ocf-distro | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/heartbeat/ocf-distro b/heartbeat/ocf-distro new file mode 100644 index 0000000..590c74e --- /dev/null +++ b/heartbeat/ocf-distro @@ -0,0 +1,209 @@ +# +# 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 "$_os" in + *alma*) + _os="almalinux" + ;; + *centos*) + _os="centos" + ;; + *debian*) + _os="debian" + ;; + *fedora*) + _os="fedora" + ;; + *ol*) + _os="ol" + ;; + *redhat*|*rhel*|*scientific*) + _os="rhel" + ;; + *rocky*) + _os="rocky" + ;; + *opensuse*) + _os="opensuse" + ;; + *suseenterprise*) + _os="sles" + ;; + *ubuntu*) + _os="ubuntu" + ;; + esac + + echo "$_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 "almalinux" -e "centos" -e "fedora" -e "ol" \ + -e "redhat" -e "rhel" -e "rocky" -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) +} |