name: Setup SUSFS
description: Clone and apply SUSFS patches with version-specific fixes
inputs:
  use_latest_commits:
    description: 'Use the latest commit on the branch instead of the pinned commit'
    required: false
    default: true
  version:
    description: 'Kernel config version (e.g., android15-6.6)'
    required: true
  android_version:
    description: 'Android version (e.g., android15)'
    required: true
  kernel_version:
    description: 'Kernel version (e.g., 6.6)'
    required: true
  os_patch_level:
    description: 'OS patch level (e.g., 2024-07)'
    required: true
  sublevel:
    description: 'Kernel sublevel'
    required: true

runs:
  using: composite
  steps:
    - name: Setup SUSFS Branch
      shell: bash
      run: |
        set -euo pipefail

        SUSFS_BRANCH="gki-${{ inputs.version }}"
        SUSFS_REPO="https://gitlab.com/simonpunk/susfs4ksu.git"        

        echo "Preparing SUSFS for branch: $SUSFS_BRANCH"
        echo "Cloning latest from $SUSFS_BRANCH..."
        git clone "$SUSFS_REPO" -b "$SUSFS_BRANCH" susfs4ksu

        if [ "${{ inputs.use_latest_commits }}" != "true" ]; then
          COMMITS_JSON="${{ github.workspace }}/.github/config/commits.json"
          SUSFS_COMMIT=$(jq -er --arg key "$SUSFS_BRANCH" '.susfs[$key]' "$COMMITS_JSON")
          cd ${{ github.workspace }}/susfs4ksu
          git checkout "$SUSFS_COMMIT"
        fi

    - name: Enable KernelSU SUSFS Config
      shell: bash
      working-directory: ${{ github.workspace }}/kernel
      run: |
        cat >> "${{ github.workspace }}/wild_gki.fragment" << 'EOF'
        # KernelSU SUSFS Configuration
        CONFIG_KSU_SUSFS=y
        CONFIG_KSU_SUSFS_SUS_PATH=y
        CONFIG_KSU_SUSFS_SUS_MOUNT=y
        CONFIG_KSU_SUSFS_SUS_KSTAT=y
        CONFIG_KSU_SUSFS_SPOOF_UNAME=y
        CONFIG_KSU_SUSFS_ENABLE_LOG=y
        CONFIG_KSU_SUSFS_HIDE_KSU_SUSFS_SYMBOLS=y
        CONFIG_KSU_SUSFS_SPOOF_CMDLINE_OR_BOOTCONFIG=y
        CONFIG_KSU_SUSFS_OPEN_REDIRECT=y
        CONFIG_KSU_SUSFS_SUS_MAP=y
        EOF

    - name: Apply KSU SUSFS Patches
      if: false
      shell: bash
      working-directory: ${{ github.workspace }}/kernel/KernelSU-Next
      run: |
        cp ${{ github.workspace }}/kernel_patches/wild/ksun-5a4a718-susfs-f7ae19ef-gki-android14-6.1.patch ./
        patch -p1 < ksun-5a4a718-susfs-f7ae19ef-gki-android14-6.1.patch

    - name: Apply Kernel SUSFS Patches
      shell: bash
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        # Apply base SUSFS patches
        cp "${{ github.workspace }}/susfs4ksu/kernel_patches/fs/"* "${{ github.workspace }}/kernel/common/fs/"
        cp "${{ github.workspace }}/susfs4ksu/kernel_patches/include/linux/"* "${{ github.workspace }}/kernel/common/include/linux/"
        cp ${{ github.workspace }}/susfs4ksu/kernel_patches/50_add_susfs_in_gki-${{ inputs.version }}.patch ./

    - name: Apply Android 12 5.10 Fake Patches
      shell: bash
      if: inputs.version == 'android12-5.10'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        if [ "${{ inputs.sublevel }}" -le "43" ]; then
          echo "Applying base.c Android 12 5.10 Fake Patch"
          perl -i -pe 's/(int|size_t)\s+this_len\s*=\s*min_t\s*\(\s*\1\s*,/size_t this_len = min_t(size_t,/;' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -le "117" ]; then
          echo "Applying fdinfo.c Android 12 5.10 Fake Patch"
          sed -i '/^[[:space:]]*\/\*$/,/^[[:space:]]*u32 mask = mark->mask & IN_ALL_EVENTS;$/d' fs/notify/fdinfo.c
          perl -i -pe 's/\bmask,\s*mark->ignored_mask/inotify_mark_user_mask(mark)/g' fs/notify/fdinfo.c
          perl -i -pe 's/ignored_mask:%x/ignored_mask:0/g' fs/notify/fdinfo.c
        fi

    - name: Apply Android 13 5.10 Fake Patches
      shell: bash
      if: inputs.version == 'android13-5.10'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        echo "Applying Android 13 5.10 SUSFS fixes"
        if [ "${{ inputs.sublevel }}" -le "107" ]; then
          echo "Applying fdinfo.c Android 13 5.10 Fake Patch"
          sed -i '/^[[:space:]]*\/\*$/,/^[[:space:]]*u32 mask = mark->mask & IN_ALL_EVENTS;$/d' fs/notify/fdinfo.c
          perl -i -pe 's/\bmask,\s*mark->ignored_mask/inotify_mark_user_mask(mark)/g' fs/notify/fdinfo.c
          perl -i -pe 's/ignored_mask:%x/ignored_mask:0/g' fs/notify/fdinfo.c
        fi

    - name: Apply Android 13 5.15 Fake Patches
      shell: bash
      if: inputs.version == 'android13-5.15'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        echo "Applying Android 13 5.15 SUSFS fixes"
        if [ "${{ inputs.sublevel }}" -le "41" ]; then
          #echo "Applying base.c Android 13 5.15 Fake Patch"
          #sed -i 's/^int this_len = min_t(int, count, PAGE_SIZE);$/size_t this_len = min_t(size_t, count, PAGE_SIZE);/' fs/proc/base.c
          echo "Applying namespace.c Android 13 5.15 SUSFS fixes"
          sed -i '/^#include <linux\/shmem_fs.h>$/a #include <linux/mnt_idmapping.h>' fs/namespace.c
          echo "Applying open.c Android 13 5.15 Fake Patch"
          sed -i '/^#include <linux\/compat.h>$/a #include <linux/mnt_idmapping.h>' fs/open.c
          echo "Applying fdinfo.c Android 13 5.15 Fake Patch"
          sed -i '/^[[:space:]]*\/\*$/,/^[[:space:]]*u32 mask = mark->mask & IN_ALL_EVENTS;$/d' fs/notify/fdinfo.c
          perl -i -pe 's/\bmask,\s*mark->ignored_mask/inotify_mark_user_mask(mark)/g' fs/notify/fdinfo.c
          perl -i -pe 's/ignored_mask:%x/ignored_mask:0/g' fs/notify/fdinfo.c
        fi
        if [ "${{ inputs.sublevel }}" -ge "207" ]; then
          echo "Applying task_mmu.c Android 13 5.15 Fake Patch"
          sed -i '/^#include <trace\/hooks\/mm.h>$/d' fs/proc/task_mmu.c
        fi

    - name: Apply Android 14 6.1 Fake Patches
      shell: bash
      if: inputs.version == 'android14-6.1'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        if [ "${{ inputs.sublevel }}" -le "25" ]; then
          echo "Applying base.c Android 14 6.1 Fake Patch"
          sed -i '/^#include <trace\/events\/oom.h>$/a #include <trace/hooks/sched.h>' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -le "141" ]; then
          echo "Applying base.c Android 14 6.1 Fake Patch"
          sed -i '/^#include <linux\/cpufreq_times.h>$/a #include <linux/dma-buf.h>' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -ge "157" ]; then
          echo "Applying namespace.c Android 14 6.1 Fake Patch"
          sed -i '/^#include <trace\/hooks\/blk.h>$/d' fs/namespace.c
        fi

    - name: Apply Android 15 6.6 Fake Patches
      shell: bash
      if: inputs.version == 'android15-6.6'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        echo "Applying 6.6 SUSFS fixes"
        if [ "${{ inputs.sublevel }}" -le "30" ]; then
          echo "Applying taskmmu.c Android 15 6.6 Fake Patch"
          sed -i '/smap_gather_stats(vma, &mss, last_vma_end);/a\last_vma_end = vma->vm_end;' fs/proc/task_mmu.c
        fi
        if [ "${{ inputs.sublevel }}" -le "92" ]; then
          echo "Applying base.c Android 15 6.6 Fake Patch"
          sed -i '/^#include <linux\/cpufreq_times.h>$/a #include <linux/dma-buf.h>' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -le "57" ]; then
          echo "Applying base.c Android 15 6.6 Fake Patch"
          sed -i '/^#include <linux\/sched\/sysctl.h>$/a #include <linux/zswap.h>' mm/memory.c
        fi

    - name: Apply Android 16 6.12 Fake Patches
      shell: bash
      if: inputs.version == 'android16-6.12'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        echo "Applying 6.12 SUSFS fixes"
        if [ "${{ inputs.sublevel }}" -ge "58" ]; then
          echo "Applying exec.c Android 16 6.12 Fake Patch"
          sed -i '/^#include <linux\/dma-buf.h>$/d' fs/exec.c
        fi
        if [ "${{ inputs.sublevel }}" -ge "69" ]; then
          echo "Applying task_mmu.c Android 16 6.12 Fake Patch"
          sed -i 's/vma_pages/vma_data_pages/g' fs/proc/task_mmu.c
        fi

    - name: Apply Kernel SUSFS Patches
      shell: bash
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        patch -p1 < 50_add_susfs_in_gki-${{ inputs.version }}.patch

    - name: Revert Android 12 5.10 Fake Patches
      shell: bash
      if: inputs.version == 'android12-5.10'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        if [ "${{ inputs.sublevel }}" -le "43" ]; then
          echo "Reverting base.c Android 12 5.10 Fake Patch"
          sed -i 's/^size_t this_len = min_t(size_t, count, PAGE_SIZE);$/int this_len = min_t(int, count, PAGE_SIZE);/' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -le "117" ]; then
          echo "Reverting fdinfo.c Android 12 5.10 Fake Patch"
          perl -i -pe 's/^(\s+if \(inode\) \{)/$1\n\t\t\/\*\n\t\t * IN_ALL_EVENTS represents all of the mask bits\n\t\t * that we expose to userspace.  There is at\n\t\t * least one bit (FS_EVENT_ON_CHILD) which is\n\t\t * used only internally to the kernel.\n\t\t *\/\n\t\tu32 mask = mark->mask & IN_ALL_EVENTS;/m' fs/notify/fdinfo.c
          perl -i -pe 's/\binotify_mark_user_mask\(mark\)/mask, mark->ignored_mask/g' fs/notify/fdinfo.c
          perl -i -pe 's/ignored_mask:0/ignored_mask:%x/g' fs/notify/fdinfo.c
        fi

    - name: Revert Android 13 5.10 Fake Patches
      shell: bash
      if: inputs.version == 'android13-5.10'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        if [ "${{ inputs.sublevel }}" -le "107" ]; then
          echo "Reverting fdinfo.c Android 13 5.10 Fake Patch"
          perl -i -pe 's/^(\s+if \(inode\) \{)/$1\n\t\t\/\*\n\t\t * IN_ALL_EVENTS represents all of the mask bits\n\t\t * that we expose to userspace.  There is at\n\t\t * least one bit (FS_EVENT_ON_CHILD) which is\n\t\t * used only internally to the kernel.\n\t\t *\/\n\t\tu32 mask = mark->mask & IN_ALL_EVENTS;/m' fs/notify/fdinfo.c
          perl -i -pe 's/\binotify_mark_user_mask\(mark\)/mask, mark->ignored_mask/g' fs/notify/fdinfo.c
          perl -i -pe 's/ignored_mask:0/ignored_mask:%x/g' fs/notify/fdinfo.c
        fi

    - name: Revert Android 13 5.15 Fake Patches
      shell: bash
      if: inputs.version == 'android13-5.15'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        if [ "${{ inputs.sublevel }}" -le "41" ]; then
          #echo "Reverting base.c Android 13 5.15 Fake Patch"
          #sed -i 's/^size_t this_len = min_t(size_t, count, PAGE_SIZE);$/int this_len = min_t(int, count, PAGE_SIZE);/' fs/proc/base.c
          echo "Reverting namespace.c Android 13 5.15 Fake Patch"
          sed -i '/#include <linux\/mnt_idmapping.h>$/d' fs/namespace.c
          echo "Reverting open.c Android 13 5.15 Fake Patch"
          sed -i '/#include <linux\/mnt_idmapping.h>$/d' fs/open.c
          echo "Reverting fdinfo.c Android 13 5.15 Fake Patch"
          perl -i -pe 's/^(\s+if \(inode\) \{)/$1\n\t\t\/\*\n\t\t * IN_ALL_EVENTS represents all of the mask bits\n\t\t * that we expose to userspace.  There is at\n\t\t * least one bit (FS_EVENT_ON_CHILD) which is\n\t\t * used only internally to the kernel.\n\t\t *\/\n\t\tu32 mask = mark->mask & IN_ALL_EVENTS;/m' fs/notify/fdinfo.c
          perl -i -pe 's/\binotify_mark_user_mask\(mark\)/mask, mark->ignored_mask/g' fs/notify/fdinfo.c
          perl -i -pe 's/ignored_mask:0/ignored_mask:%x/g' fs/notify/fdinfo.c
          sed -i 's|i_uid_into_mnt(i_user_ns(&fi->inode), &fi->inode).val|i_uid_into_mnt(\&init_user_ns, \&fi->inode).val|g' fs/susfs.c
          sed -i 's|i_uid_into_mnt(i_user_ns(inode), inode).val|i_uid_into_mnt(\&init_user_ns, inode).val|g' fs/susfs.c
        fi
        if [ "${{ inputs.sublevel }}" -ge "207" ]; then
          echo "Reverting task_mmu.c Android 13 5.15 Fake Patch"
          sed -i '/^#include <linux\/pkeys.h>$/a #include <trace/hooks/mm.h>' fs/proc/task_mmu.c
        fi

    - name: Revert Android 14 6.1 Fake Patches
      shell: bash
      if: inputs.version == 'android14-6.1'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        if [ "${{ inputs.sublevel }}" -le "25" ]; then
          sed -i '/^#include <trace\/hooks\/sched.h>$/d' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -le "141" ]; then
          echo "Reverting base.c Android 14 6.1 Fake Patch"
          sed -i '/^#include <linux\/dma-buf.h>$/d' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -ge "157" ]; then
          echo "Reverting namespace.c Android 14 6.1 Fake Patch"
          sed -i '/^#include "internal.h"$/a #include <trace/hooks/blk.h>' fs/namespace.c
        fi

    - name: Revert Android 15 6.6 Fake Patches
      shell: bash
      if: inputs.version == 'android15-6.6'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        echo "Reverting 6.6 Fake Patches"
        if [ "${{ inputs.sublevel }}" -le "92" ]; then
          echo "Reverting base.c Android 15 6.6 Fake Patch"
          sed -i '/^#include <linux\/dma-buf.h>$/d' fs/proc/base.c
        fi
        if [ "${{ inputs.sublevel }}" -le "57" ]; then
          echo "Reverting memory.c Android 15 6.6 Fake Patch"
          sed -i '/^#include <linux\/zswap.h>$/d' mm/memory.c
        fi

    - name: Revert Android 16 6.12 Fake Patches
      shell: bash
      if: inputs.version == 'android16-6.12'
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        echo "Reverting 6.12 Fake Patches"
        if [ "${{ inputs.sublevel }}" -ge "58" ]; then
          echo "Reverting exec.c Android 16 6.12 Fake Patch"
          sed -i '/^#include /a #include <linux/dma-buf.h>' fs/exec.c
        fi
        if [ "${{ inputs.sublevel }}" -ge "69" ]; then
          echo "Reverting task_mmu.c Android 16 6.12 Fake Patch"
          sed -i 's/vma_pages/vma_data_pages/g' fs/proc/task_mmu.c
        fi

    - name: Apply Kernel SUSFS Patches
      shell: bash
      if: true
      working-directory: ${{ github.workspace }}/kernel/common
      run: |
        SHOW_PAD_FIX=0
        if [[ "${{ inputs.version }}" = "android12-5.10" && "${{ inputs.sublevel }}" -le 209 ]]; then
          SHOW_PAD_FIX=1
        elif [[ "${{ inputs.version }}" = "android13-5.10" && "${{ inputs.sublevel }}" -le 209 && "${{ inputs.os_patch_level }}" != "2024-05" ]]; then
          SHOW_PAD_FIX=1
        elif [[ "${{ inputs.version }}" = "android13-5.15" && "${{ inputs.sublevel }}" -le 148 && "${{ inputs.os_patch_level }}" != "2024-05" ]]; then
          SHOW_PAD_FIX=1
        elif [[ "${{ inputs.version }}" = "android14-5.15" && "${{ inputs.sublevel }}" -le 148 && "${{ inputs.os_patch_level }}" != "2024-05" ]]; then
          SHOW_PAD_FIX=1
        elif [[ "${{ inputs.version }}" = "android14-6.1" && "${{ inputs.sublevel }}" -le 75 && "${{ inputs.os_patch_level }}" != "2024-05" ]]; then
          SHOW_PAD_FIX=1
        fi

        if [[ "$SHOW_PAD_FIX" = "1" ]]; then
          sed -i -e 's/goto show_pad;/return 0;/' ./fs/proc/task_mmu.c
        fi