feat(rust): run postscripts in a chroot

rust/agama-lib/share/examples/post-script.jsonnet

@@ -0,0 +1,25 @@
+{
+  user: {
+    fullName: 'Jane Doe',
+    userName: 'jane.doe',
+    password: 'nots3cr3t',
+  },
+  root: {
+    password: 'nots3cr3t',
+  },
+  product: {
+    id: 'Tumbleweed',
+  },
+  scripts: {
+    post: [
+      {
+        name: 'enable-sshd',
+        chroot: true,
+        body: |||
+          #!/bin/bash
+          systemctl enable sshd
+        |||,
+      },
+    ],
+  },
+}

rust/agama-lib/share/profile.schema.json

@@ -18,23 +18,23 @@
           "description": "User-defined scripts to run before the installation starts",
           "type": "array",
           "items": {
-            "$ref": "#/$defs/script"
+            "$ref": "#/$defs/preScript"
           }
         },
         "post": {
           "title": "Post-installation scripts",
           "description": "User-defined scripts to run after the installation finishes",
           "type": "array",
           "items": {
-            "$ref": "#/$defs/script"
+            "$ref": "#/$defs/postScript"
           }
         },
         "init": {
           "title": "Init scripts",
           "description": "User-defined scripts to run booting the installed system",
           "type": "array",
           "items": {
-            "$ref": "#/$defs/script"
+            "$ref": "#/$defs/initScript"
           }
         }
       }
@@ -1418,8 +1418,57 @@
       "title": "Stripe size",
       "$ref": "#/$defs/sizeValue"
     },
-    "script": {
-      "title": "User-defined installation script",
+    "preScript": {
+      "title": "User-defined installation script that runs before the installation starts",
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "name": {
+          "description": "Script name, to be used as file name",
+          "type": "string"
+        },
+        "body": {
+          "title": "Script content",
+          "description": "Script content, starting with the shebang",
+          "type": "string"
+        },
+        "url": {
+          "title": "Script URL",
+          "description": "URL to fetch the script from"
+        }
+      },
+      "required": ["name"],
+      "oneOf": [{ "required": ["body"] }, { "required": ["url"] }]
+    },
+    "postScript": {
+      "title": "User-defined installation script that runs after the installation finishes",
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "name": {
+          "description": "Script name, to be used as file name",
+          "type": "string"
+        },
+        "body": {
+          "title": "Script content",
+          "description": "Script content, starting with the shebang",
+          "type": "string"
+        },
+        "url": {
+          "title": "Script URL",
+          "description": "URL to fetch the script from"
+        },
+        "chroot": {
+          "title": "Whether it should run in the installed system using a chroot environment",
+          "description": "whether to chroot to the target system (default: yes) or not",
+          "type": "boolean"
+        }
+      },
+      "required": ["name"],
+      "oneOf": [{ "required": ["body"] }, { "required": ["url"] }]
+    },
+    "initScript": {
+      "title": "User-defined installation script that runs during the first boot of the target system, once the installation is finished",
       "type": "object",
       "additionalProperties": false,
       "properties": {

rust/agama-lib/src/scripts/client.rs

@@ -35,7 +35,7 @@ impl ScriptsClient {
     /// Adds a script to the given group.
     ///
     /// * `script`: script's definition.
-    pub async fn add_script(&self, script: &Script) -> Result<(), ServiceError> {
+    pub async fn add_script(&self, script: Script) -> Result<(), ServiceError> {
         self.client.post_void("/scripts", &script).await
     }
 

rust/agama-lib/src/scripts/error.rs

@@ -29,4 +29,6 @@ pub enum ScriptError {
     Unreachable(#[from] TransferError),
     #[error("I/O error: '{0}'")]
     InputOutputError(#[from] io::Error),
+    #[error("Wrong script type")]
+    WrongScriptType,
 }