testsuite: add file system test suite test_symlinks.sh

.github/workflows/ci.yml

@@ -127,6 +127,9 @@ jobs:
         run: |
           make -C build/extra/gcc-m32/debug test
           make -C build/extra/gcc-m32/release test
+      - name: 'Run file system test suite'
+        run: |
+          env -C build/extra/gcc/release bash "$PWD"/misc/testsuite/test_symlinks.sh
       - name: 'Run test suite build/extra/gcc/release'
         run: |
           export upx_testsuite_SRCDIR="$(readlink -en ../deps/upx-testsuite)"
@@ -142,6 +145,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          # NOTE: macos does not have "env -C"; only with coreutils
+          # NOTE: macos-11 does not have "readlink -f"; only on macos >= 12 or with coreutils
           - { os: macos-11, gcc: gcc-10, gxx: 'g++-10', testsuite: true }
           - { os: macos-12, gcc: gcc-11, gxx: 'g++-11', testsuite: true }
           - { os: macos-13, gcc: gcc-12, gxx: 'g++-12', testsuite: true }
@@ -201,6 +206,14 @@ jobs:
         run: |
           make -C build/extra/clang/debug test
           make -C build/extra/clang/release test
+      - name: 'Run file system test suite'
+        if: ${{ matrix.testsuite }} # for coreutils readlink
+        run: |
+          ## macos-11 does not have "readlink -f"
+          ##   testsuite="$(readlink -fn ./misc/testsuite/test_symlinks.sh)"
+          ##   (cd build/extra/clang/release && upx_exe=./upx bash "$testsuite")
+          export PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
+          env -C build/extra/clang/release bash "$PWD"/misc/testsuite/test_symlinks.sh
       - name: 'Run test suite build/extra/clang/release'
         if: ${{ matrix.testsuite }}
         run: |

.github/workflows/weekly-ci-cc-alpine-linux.yml

@@ -146,6 +146,14 @@ jobs:
           (cd "upx with space"/build/xtarget/gcc-static/release   && DESTDIR="$PWD/Install with cmake" cmake --install .)
           (cd "upx with space"/build/xtarget/gcc-static/release   && DESTDIR="$PWD/Install with make"  make install)
 
+      - name: 'Run file system test suite (busybox)'
+        run: |
+          apk add bash sudo
+          testsuite="$(readlink -fn "upx with space"/misc/testsuite/test_symlinks.sh)"
+          cd "upx with space"/build/xtarget/gcc-static/release
+          # IMPORTANT: do NOT run as user root!
+          chmod a+w . && sudo -u operator bash "$testsuite"
+
       # test suite
       - name: ${{ format('Run test suite level {0}', env.UPX_TESTSUITE_LEVEL) }}
         run: |
@@ -156,3 +164,11 @@ jobs:
           export upx_testsuite_SRCDIR="$(readlink -fn "upx-testsuite with space")"
           testsuite_1="$(readlink -fn "upx with space"/misc/testsuite/upx_testsuite_1.sh)"
           (cd "upx with space"/build/xtarget/gcc-static/release && upx_exe=./upx bash "$testsuite_1")
+
+      - name: 'Run file system test suite (coreutils)'
+        run: |
+          apk add bash coreutils sudo
+          testsuite="$(readlink -fn "upx with space"/misc/testsuite/test_symlinks.sh)"
+          cd "upx with space"/build/xtarget/gcc-static/release
+          # IMPORTANT: do NOT run as user root!
+          chmod a+w . && sudo -u operator bash "$testsuite"