Update bash demo with bom tool and add musl version

Signed-off-by: Zheng, Qi <huaiqing.zq@antgroup.com>

demos/bash/Occlum.json

@@ -1,65 +0,0 @@
-{
-    "resource_limits": {
-        "user_space_size": "600MB",
-        "kernel_space_heap_size": "32MB",
-        "kernel_space_stack_size": "1MB",
-        "max_num_of_threads": 16
-    },
-    "process": {
-        "default_stack_size": "2MB",
-        "default_heap_size": "16MB",
-        "default_mmap_size": "80MB"
-    },
-    "entry_points": [
-        "/root/bin"
-    ],
-    "env": {
-        "default": [
-            "OCCLUM=yes",
-            "HOME=/root"
-        ],
-        "untrusted": [
-        ]
-    },
-    "metadata": {
-        "product_id": 0,
-        "version_number": 0,
-        "debuggable": true
-    },
-    "mount": [
-        {
-            "target": "/",
-            "type": "unionfs",
-            "options": {
-                "layers": [
-                    {
-                        "target": "/",
-                        "type": "sefs",
-                        "source": "./build/mount/__ROOT",
-                        "options": {
-                            "MAC": ""
-                        }
-                    },
-                    {
-                        "target": "/",
-                        "type": "sefs",
-                        "source": "./run/mount/__ROOT"
-                    }
-                ]
-            }
-        },
-        {
-            "target": "/host",
-            "type": "hostfs",
-            "source": "."
-        },
-        {
-            "target": "/proc",
-            "type": "procfs"
-        },
-        {
-            "target": "/dev",
-            "type": "devfs"
-        }
-    ]
-}

demos/bash/README.md

@@ -6,14 +6,14 @@ Bash is the most widely used shell implementation around the world. Previously,
 
 Now, Bash is finally supported with modification to the source code of Bash. We have evaluated and all commands defined in `occlum_bash_test.sh` are all supported.
 
-Please follow below steps to run this demo:
+Two versions [`musl-libc` and `glibc`] of bash demo is provided:
 
-1. Download and build Busybox and Occlum-version Bash
+* musl-libc bash demo
 ```
-./prepare_bash_demo.sh
+./run_bash_demo.sh musl
 ```
 
-2. Run Bash script in Occlum
+* glibc bash demo
 ```
 ./run_bash_demo.sh
 ```

demos/bash/bash-musl.yaml

@@ -0,0 +1,11 @@
+includes:
+  - base.yaml
+# musl bash
+targets:
+  # copy bash and busybox
+  - target: /bin
+    copy:
+      - files:
+        - /opt/occlum/toolchains/bash/musl/bash
+        - ../busybox/busybox
+        - ../occlum_bash_test.sh

demos/bash/bash.yaml

@@ -0,0 +1,11 @@
+includes:
+  - base.yaml
+# bash
+targets:
+  # copy bash and busybox
+  - target: /bin
+    copy:
+      - files:
+        - /opt/occlum/toolchains/bash/glibc/bash
+        - ../busybox/busybox
+        - ../occlum_bash_test.sh

demos/bash/occlum_bash_test.sh

@@ -58,7 +58,7 @@ fi
 fake_inst || true
 
 # Test builtin command
-cd /opt/occlum/glibc/lib
+cd /host
 pwd
 cd -
 

demos/bash/prepare_bash_demo.sh

@@ -1,35 +0,0 @@
-#! /bin/bash
-set -e
-
-current=$(pwd)
-bash_src="$current/bash_for_occlum"
-bash_git="https://github.com/occlum/bash.git"
-bash_branch="bash_5.1_for_occlum"
-busybox_src="$current/busybox"
-
-if [ ! -d "$bash_src" ]; then
-    # Download and configure Bash
-    cd $current
-    git clone -b $bash_branch $bash_git bash_for_occlum
-    cd bash_for_occlum && git checkout $bash_branch
-    if [ "$DEBUG" == "1" ]; then
-        CFLAGS="-D DEBUG=1 -g -O0" ./configure --enable-debugger
-    else
-        ./configure
-    fi
-
-    # Build
-    make -j$(nproc)
-    echo "Bash is ready."
-fi
-
-if [ ! -d "$busybox_src" ]; then
-    cd $current
-    busybox_config="$current/../fish/.config"
-    git clone -b 1_31_1 --depth 1 https://github.com/mirror/busybox.git
-    cd busybox
-    # CROSS_COMPILE=/opt/occlum/toolchains/gcc/bin/occlum-
-    make defconfig
-    cp $busybox_config .
-    make -j$(nproc)
-fi

demos/bash/prepare_busybox.sh

@@ -0,0 +1,24 @@
+#! /bin/bash
+set -e
+
+current=$(pwd)
+busybox_src="$current/busybox"
+busybox_config="$current/../fish/.config"
+
+rm -rf $busybox_src
+git clone -b 1_31_1 --depth 1 https://github.com/mirror/busybox.git
+
+pushd $busybox_src
+make clean
+make defconfig
+cp $busybox_config .
+
+if [[ $1 == "musl" ]]; then
+    echo "Building musl-libc version of busybox"
+    sed -e 's/.*CONFIG_CROSS_COMPILER_PREFIX.*/CONFIG_CROSS_COMPILER_PREFIX="occlum-"/' -i .config
+else
+    echo "Building glibc version of busybox"
+fi
+
+make -j
+popd

demos/bash/run_bash_demo.sh

@@ -1,29 +1,27 @@
 #! /bin/bash
 set -e
 
-current=$(pwd)
-bash_src="$current/bash_for_occlum"
-busybox_src="$current/busybox"
-occlum_instance="$current/occlum_instance"
-occlum_glibc_path=$occlum_instance/image/opt/occlum/glibc/lib
-# Executable path in Occlum
-exec_path=/root/bin
+if [[ $1 == "musl" ]]; then
+    echo "*** Run musl-libc bash demo ***"
+    ./prepare_busybox.sh musl
+    bomfile="../bash-musl.yaml"
+else
+    echo "*** Run glibc bash demo ***"
+    ./prepare_busybox.sh
+    bomfile="../bash.yaml"
+fi
 
 rm -rf occlum_instance
 occlum new occlum_instance
 
-cd occlum_instance
+pushd occlum_instance
+rm -rf image
+copy_bom -f $bomfile --root image --include-dir /opt/occlum/etc/template
 
-cp $bash_src/bash ./image/bin/
-cp /lib/x86_64-linux-gnu/libtinfo.so.5 $occlum_glibc_path
-cp /lib/x86_64-linux-gnu/libdl.so.2 $occlum_glibc_path
-cp $busybox_src/busybox image/bin
-cp /lib/x86_64-linux-gnu/libm.so.6 $occlum_glibc_path
-cp /lib/x86_64-linux-gnu/libresolv.so.2 $occlum_glibc_path
-
-mkdir -p "$occlum_instance/image/$exec_path"
-cp "$current/occlum_bash_test.sh" "$occlum_instance/image/$exec_path"
-cp "$current/Occlum.json" "$occlum_instance"
+new_json="$(jq '.resource_limits.user_space_size = "600MB" ' Occlum.json)" && \
+    echo "${new_json}" > Occlum.json
 
 occlum build
-occlum run /root/bin/occlum_bash_test.sh
+occlum run /bin/occlum_bash_test.sh
+
+popd