weak-modules: Sync with RHEL
Signed-off-by: Yauheni Kaliuta <ykaliuta@fedoraproject.org>
This commit is contained in:
Yauheni Kaliuta
parent
b006530fb5
commit
933fad99cb
99
weak-modules
99
weak-modules
@ -3,15 +3,6 @@
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# weak-modules - determine which modules are kABI compatible with installed
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# kernels and set up the symlinks in /lib/*/weak-updates.
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#
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# This is an updated version of the script which doesn't support
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# multiple installation of the same out-of-tree module (stored in the
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# 'extra' subdirectory) for multiple kernels. This assumption is
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# supposed to be verified at the rpm level of the packages delivering
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# these modules. There are some checks for this assumption, however we
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# really don't solve this situation. This limitation allows for a much
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# simpler version of the script. Previous version tried to work in this
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# case but was incorrect in some cases.
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unset LANG LC_ALL LC_COLLATE
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tmpdir=$(mktemp -td ${0##*/}.XXXXXX)
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@ -32,6 +23,14 @@ declare -A weak_modules_before
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declare -A groups
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declare -A grouped_modules
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# output of validate_weak_links, one iteration
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# short_name -> path
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declare -A compatible_modules
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# state for update_modules_for_krel (needed for add_kernel case)
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# short_name -> path
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declare -A installed_modules
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# doit:
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# A wrapper used whenever we're going to perform a real operation.
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doit() {
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@ -473,6 +472,29 @@ prepare_sandbox() {
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depmod="$depmod_orig -C $conf"
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}
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# discard_installed:
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# remove installed_modules[] from modules[]
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discard_installed()
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{
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local short_name
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for m in "${!modules[@]}"; do
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short_name="$(module_short_name "${modules[$m]}")"
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[[ -z "${installed_modules[$short_name]}" ]] && continue
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unset "modules[$m]"
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done
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}
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# update_installed:
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# add compatible_modules[] to installed_modules[]
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update_installed()
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{
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for m in "${!compatible_modules[@]}"; do
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installed_modules[$m]="${compatible_modules[$m]}"
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done
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}
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# finish_sandbox:
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# restore global state after sandboxing
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@ -568,6 +590,7 @@ find_systemmap_file() {
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# the given kernel)
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# - check the state after validation to produce needed messages
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# and trigger initrd regeneration if the list changed.
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#
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update_modules_for_krel() {
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local krel="$1"
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local func="$2"
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@ -579,12 +602,24 @@ update_modules_for_krel() {
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global_link_state_save $krel
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# remove already installed from modules[]
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discard_installed
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# do not run heavy validation procedure if no modules to install
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if [[ "${#modules[@]}" -eq 0 ]]; then
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finish_sandbox $krel
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return
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fi
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$func $krel
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if ! validate_weak_links $krel && [[ -z "$force_update" ]]; then
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global_link_state_restore $krel
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fi
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# add compatible to installed
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update_installed
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global_link_state_announce_changes $krel
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finish_sandbox $krel
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@ -600,12 +635,16 @@ update_modules() {
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local func="$1"
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local force_update="$2"
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local module_krel
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declare -a saved_modules
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read_modules_list || exit 1
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[[ ${#modules[@]} -gt 0 ]] || return
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saved_modules=("${modules[@]}")
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for krel in $(find_installed_kernels); do
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update_modules_for_krel $krel $func $force_update
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modules=("${saved_modules[@]}")
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installed_modules=()
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done
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for module in "${modules[@]}"; do
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@ -630,7 +669,7 @@ add_weak_links() {
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module_krel="$(krel_of_module $module)"
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case "$module" in
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/lib/modules/$krel/*)
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$BASEDIR/lib/modules/$krel/*)
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# Module already installed to the current kernel
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continue ;;
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esac
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@ -698,6 +737,7 @@ remove_weak_links() {
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#
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# Returns 0 (success) if proposal is fine or
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# 1 (false) if some incompatible symlinks were removed
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# initializes global hashmap compatible_modules with all the valid ones
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validate_weak_links() {
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local krel="$1"
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local basedir=${BASEDIR:+-b $BASEDIR}
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@ -715,6 +755,7 @@ validate_weak_links() {
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local is_configuration_valid=0
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tmp=$(mktemp -p $tmpdir)
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compatible_modules=()
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if ! [[ -e $tmpdir/symvers-$krel ]]; then
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local symvers_path=$(find_symvers_file "$krel")
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@ -779,6 +820,9 @@ validate_weak_links() {
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module_krel=$(krel_of_module $target)
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if [[ "$module" == "$target" ]]; then
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short_name="$(module_short_name "$module")"
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compatible_modules+=([$short_name]="$module")
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pr_verbose "Module ${module##*/} from kernel $module_krel is compatible with kernel $krel"
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fi
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done
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@ -877,9 +921,12 @@ add_modules() {
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# do_make_groups:
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# Takes tmp file which contains preprocessed modules.dep
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# output (or modules.dep)
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#
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# reads modules.dep format information from stdin
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# produces groups associative array
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# the group is a maximum subset of modules having at least a link
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#
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# more fine tuned extra filtering.
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do_make_groups()
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{
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local tmp="$1"
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@ -890,6 +937,8 @@ do_make_groups()
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while read i; do
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mods=($i)
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echo "${mods[0]}" |grep -q "extra/" || continue
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# if the module already met, then its dependencies already counted
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module_group="${grouped_modules[${mods[0]}]}"
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[[ -n $module_group ]] && continue
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@ -898,6 +947,8 @@ do_make_groups()
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group_name="${mods[0]}"
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for mod in "${mods[@]}"; do
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echo "$mod" |grep -q "extra/" || continue
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# if there is already such group,
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# it is a subset of the one being created
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# due to depmod output
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@ -915,26 +966,32 @@ do_make_groups()
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# preprocess output for make_groups
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# depmod -n produces also aliases, so it cuts them off
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# also it removes colon after the first module
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filter_depmod_deps()
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cut_depmod_deps()
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{
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awk 'BEGIN { pr = 1 } /^#/{ pr = 0 } pr == 1 {sub(":",""); print $0}'
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}
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# make_abs_path:
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# filter_extra_absoluted:
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# Takes kernel version
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# makes full path from the relative module path
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# (produced by depmod for in-kernel-dir modules)
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make_abs_path()
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# filter only extra/ modules
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filter_extra_absoluted()
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{
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local kver="$1"
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local mod
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declare -a mods
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while read i; do
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# skip non-extra. The check is not perfect, but ok
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# to speed up handling in general cases
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echo "$i" |grep -q "extra/" || continue
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mods=($i)
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for j in "${!mods[@]}"; do
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mod="${mods[$j]}"
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[[ ${mod:0:1} == "/" ]] || mod="/lib/modules/$kver/$mod"
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[[ ${mod:0:1} == "/" ]] || mod="$BASEDIR/lib/modules/$kver/$mod"
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mods[$j]="$mod"
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done
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echo "${mods[@]}"
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@ -942,20 +999,20 @@ make_abs_path()
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}
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# make_groups:
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# takes krel and a file with the list of modules,
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# takes k -- kernel version, we are installing extras from
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# prepares and feeds to do_make_groups
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# to create the module groups (global)
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make_groups()
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{
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local krel="$1"
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local tmp1="$2"
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local k="$1"
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local tmp2=$(mktemp -p $tmpdir)
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local basedir=${BASEDIR:+-b $BASEDIR}
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groups=()
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grouped_modules=()
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$depmod -n $krel $(cat $tmp1) 2>/dev/null |
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filter_depmod_deps | make_abs_path $krel > $tmp2
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$depmod -n $basedir $k 2>/dev/null |
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cut_depmod_deps | filter_extra_absoluted $k > $tmp2
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do_make_groups $tmp2
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@ -976,11 +1033,11 @@ add_kernel() {
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exit 1
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fi
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for k in $(find_kernels_with_extra | rpmsort); do
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for k in $(find_kernels_with_extra | rpmsort -r); do
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[[ "$krel" == "$k" ]] && continue
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find_modules $k extra > $tmp
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is_empty_file "$tmp" || make_groups $krel $tmp
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is_empty_file "$tmp" || make_groups $k
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# reuse tmp
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