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118 lines
3.1 KiB
118 lines
3.1 KiB
#!/bin/bash |
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# |
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# Generator script for a dracut initramfs |
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# Tries to retain some degree of compatibility with the command line |
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# of the various mkinitrd implementations out there |
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# |
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# Copyright 2008, Red Hat, Inc. Jeremy Katz <katzj@redhat.com> |
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# GPLv2 header here |
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while (($# > 0)); do |
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case $1 in |
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-f|--force) force=yes;; |
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-m|--modules) dracutmodules_l="$2"; shift;; |
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-d|--drivers) modules_l="$2"; shift;; |
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-h|--help) echo "Usage: $0 [-f] <initramfs> <kernel-version>" |
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exit 1 ;; |
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-d|--debug) set -x;; |
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-v|--verbose) beverbose="yes";; |
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-c|--conf) conffile="$2"; shift;; |
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-l|--local) allowlocal="yes" ;; |
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-h|--hostonly) hostonly="-h" ;; |
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-i|--include) include_src="$2"; include_target="$3"; shift 2;; |
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--skip-missing) skipmissing="yes" ;; |
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*) break ;; |
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esac |
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shift |
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done |
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[[ -f $conffile ]] || ( [[ -f /etc/dracut.conf ]] && conffile="/etc/dracut.conf" ) |
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[[ -f $conffile ]] && . "$conffile" |
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[[ $dracutmodules_l ]] && dracutmodules=$dracutmodules_l |
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[[ $modules_l ]] && modules=$modules_l |
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[[ $allowlocal && -f dracut-functions ]] && dsrc="." || dsrc=/usr/lib/dracut |
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. $dsrc/dracut-functions |
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dracutfunctions=$dsrc/dracut-functions |
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export dracutfunctions |
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[[ $dracutmodules ]] || dracutmodules="auto" |
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[[ $dracutmodules = "auto" ]] && { |
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dracutmodules="all" |
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skipmissing="yes" |
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} |
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[[ $dracutmodules = "hostonly" ]] && { |
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dracutmodules="all" |
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skipmissing="yes" |
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hostonly="-h" |
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} |
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[[ $2 ]] && kernel=$2 || kernel=$(uname -r) |
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[[ $1 ]] && outfile=$(readlink -f $1) || outfile="/boot/initrd-$kernel.img" |
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if [[ -f $outfile && ! $force ]]; then |
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echo "Will not override existing initramfs ($outfile) without --force" |
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exit 1 |
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fi |
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hookdirs="pre-udev pre-mount pre-pivot mount" |
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readonly initdir=$(mktemp -d -t initramfs.XXXXXX) |
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trap 'rm -rf "$initdir"' 0 # clean up after ourselves no matter how we die. |
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export initdir hookdirs dsrc dracutmodules modules |
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# Create some directory structure first |
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for d in bin sbin usr/bin usr/sbin usr/lib etc proc sys sysroot dev/pts; do |
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mkdir -p "$initdir/$d"; |
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done |
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skip_missing() { |
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# $1 = location of module |
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[[ $skipmissing ]] || return 0 |
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[[ -x $1/check ]] || return 0 |
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"$1/check" $hostonly |
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} |
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can_source_module() { |
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# $1 = location of module |
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mod=${1##*/}; mod=${mod#[0-9][0-9]}; |
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if [[ $dracutmodules != all ]]; then |
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strstr "$dracutmodules " "$mod " || return 1 |
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fi |
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skip_missing "$1" |
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} |
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# source all our modules |
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for moddir in "$dsrc/modules.d"/*; do |
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[[ -d $moddir || -L $moddir ]] || continue |
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can_source_module "$moddir" || continue |
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[[ -x $moddir/install ]] && . "$moddir/install" |
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done |
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unset moddir |
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## final stuff that has to happen |
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# generate module dependencies for the initrd |
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/sbin/depmod -a -b "$initdir" $kernel || { |
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echo "\"/sbin/depmod -a $kernel\" failed." |
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exit 1 |
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} |
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# make sure that library links are correct and up to date |
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ldconfig -n -r "$initdir" /lib* /usr/lib* |
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[[ $include_src && $include_target ]] && { |
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mkdir -p "$initdir$include_target" |
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cp -a -t "$initdir$include_target" "$include_src"/* |
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} |
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[[ "$beverbose" = "yes" ]] && (du -c "$initdir" | sort -n) |
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( cd "$initdir"; find . |cpio -H newc -o |gzip -9 > "$outfile"; ) |
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[[ "$beverbose" = "yes" ]] && ls -lh "$outfile" |
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:
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