name: 'Kernel Fixes'
description: 'Applies compatibility fixes based on android/kernel/sublevel'
inputs:
  android_version:
    required: true
    type: string
  kernel_version:
    required: true
    type: string
  sublevel:
    required: true
    type: string
  os_patch_level:
    required: true
    type: string

runs:
  using: composite
  steps:
    - shell: bash
      run: |
        set -euo pipefail

        ANDROID_VERSION="${{ inputs.android_version }}"
        KERNEL_VERSION="${{ inputs.kernel_version }}"
        SUBLEVEL="${{ inputs.sublevel }}"
        OS_PATCH_LEVEL="${{ inputs.os_patch_level }}"

        if { [[ "$ANDROID_VERSION" == "android13" && "$KERNEL_VERSION" == "5.10" && "$SUBLEVEL" -le 186 ]] || \
             [[ "$ANDROID_VERSION" == "android13" && "$KERNEL_VERSION" == "5.15" && "$SUBLEVEL" -le 119 ]] || \
             [[ "$ANDROID_VERSION" == "android14" && "$KERNEL_VERSION" == "5.15" && "$SUBLEVEL" -le 110 ]] || \
             [[ "$ANDROID_VERSION" == "android14" && "$KERNEL_VERSION" == "6.1" && "$SUBLEVEL" -le 43 ]]; }; then
          GLIBC_VERSION="$(ldd --version 2>/dev/null | head -n 1 | awk '{print $NF}')"
          if [ "$(printf '%s\n' "2.38" "$GLIBC_VERSION" | sort -V | head -n 1)" = "2.38" ]; then
            cd "$GITHUB_WORKSPACE/kernel/common"
            sed -i '/\$(Q)\$(MAKE) -C \$(SUBCMD_SRC) OUTPUT=\$(abspath \$(dir \$@))\/ \$(abspath \$@)/s//$(Q)$(MAKE) -C $(SUBCMD_SRC) EXTRA_CFLAGS="$(CFLAGS)" OUTPUT=$(abspath $(dir $@))\/ $(abspath $@)/' tools/bpf/resolve_btfids/Makefile 2>/dev/null || true
            if { [[ "$ANDROID_VERSION" == "android13" && "$KERNEL_VERSION" == "5.10" && "$SUBLEVEL" -le 186 ]] || \
                 [[ "$ANDROID_VERSION" == "android13" && "$KERNEL_VERSION" == "5.15" && "$SUBLEVEL" -le 119 ]] || \
                 [[ "$ANDROID_VERSION" == "android14" && "$KERNEL_VERSION" == "5.15" && "$SUBLEVEL" -le 110 ]]; }; then
              sed -i '/char \*buf = NULL;/a int i;' tools/lib/subcmd/parse-options.c 2>/dev/null || true
              sed -i 's/for (int i = 0; subcommands\[i\]; i++) {/for (i = 0; subcommands[i]; i++) {/' tools/lib/subcmd/parse-options.c 2>/dev/null || true
              sed -i '/if (subcommands) {/a int i;' tools/lib/subcmd/parse-options.c 2>/dev/null || true
              sed -i 's/for (int i = 0; subcommands\[i\]; i++)/for (i = 0; subcommands[i]; i++)/' tools/lib/subcmd/parse-options.c 2>/dev/null || true
            fi
          fi
        fi

        if [ "$ANDROID_VERSION" = "android15" ] && [ "$KERNEL_VERSION" = "6.6" ]; then
          cd "$GITHUB_WORKSPACE/kernel/common"
          if ! grep -qxF '#include <trace/hooks/fs.h>' ./fs/namespace.c; then
            sed -i '/#include <trace\/hooks\/blk.h>/a #include <trace\/hooks\/fs.h>' ./fs/namespace.c
          fi
        fi