66 lines
2.2 KiB
Bash
66 lines
2.2 KiB
Bash
#!/usr/bin/env bash
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# Restore persist ld.so/libc from the native extra copy (objcopy left
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# zero-size GNU_PROPERTY headers). Then re-inject session + helper.
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set -uo pipefail
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ROOT=/mnt/d/Code/DEAICUP/Deshab
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OUT="$ROOT/.build_tmp/restore_persist_ld.out"
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exec > >(stdbuf -oL tee "$OUT") 2>&1
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killall qemu-system-x86_64 2>/dev/null || true
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WANT_LD=1e794eb14f4bccf6186bf8d9aa2018e8963ea668
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WANT_LIBC=503200d7fda94a5dc6058d7e0694e5d1dcb2e372
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SRC=""
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S=""
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for p in /home/deshab/linux-extra-rootfs.img /root/extra_rootfs_work/extra-rootfs.img; do
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[[ -f "$p" ]] || continue
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echo "[restore] candidate $p"
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t=$(mktemp -d)
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if ! mount -o loop,ro "$p" "$t"; then
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rmdir "$t"
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continue
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fi
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bid=$(readelf -n "$t/usr/lib/ld-linux-x86-64.so.2" 2>/dev/null | awk '/Build ID:/ {print $3; exit}')
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echo "[restore] $p ld.so buildid=$bid"
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readelf -l "$t/usr/lib/ld-linux-x86-64.so.2" 2>/dev/null | grep -A1 GNU_PROPERTY || true
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if [[ "$bid" == "$WANT_LD" ]]; then
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SRC="$p"
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S="$t"
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break
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fi
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umount "$t"
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rmdir "$t"
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done
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if [[ -z "$SRC" ]]; then
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echo "[restore] no matching native extra copy (want $WANT_LD)"
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exit 1
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fi
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echo "[restore] src $SRC"
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IMG=/home/deshab/deshab-dev.img
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LOOP=$(losetup --find --show --partscan "$IMG")
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sleep 0.3
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M=$(mktemp -d)
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mount "${LOOP}p1" "$M"
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E=$(mktemp -d)
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mount -o loop "$M/boot/linux-extra-rootfs.img" "$E"
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echo "[restore] dst before"
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readelf -l "$E/usr/lib/ld-linux-x86-64.so.2" 2>&1 | grep -A1 GNU_PROPERTY || true
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cp -a "$S/usr/lib/ld-linux-x86-64.so.2" "$E/usr/lib/ld-linux-x86-64.so.2"
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# libc.so.6 may be a symlink to libc.so.6 real file
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src_libc=$(readlink -f "$S/usr/lib/libc.so.6")
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dst_libc=$(readlink -f "$E/usr/lib/libc.so.6")
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echo "[restore] libc $src_libc -> $dst_libc"
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cp -a "$src_libc" "$dst_libc"
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chmod 0755 "$E/usr/lib/ld-linux-x86-64.so.2" "$dst_libc"
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echo "[restore] dst after"
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readelf -l "$E/usr/lib/ld-linux-x86-64.so.2" 2>&1 | grep -A2 GNU_PROPERTY || true
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readelf -n "$E/usr/lib/ld-linux-x86-64.so.2" 2>&1 | grep -i 'x86 feature\|SHSTK\|IBT\|GNU_PROPERTY' || true
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umount "$E"
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rmdir "$E"
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umount "$M"
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losetup -d "$LOOP"
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rmdir "$M"
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umount "$S"
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rmdir "$S"
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echo "[restore] extra ld.so restored"
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