v2.2.2: Fix bootstrap permission denied - chmod after install, shell fallback, fixPermissions plugin method

README.md

@@ -631,6 +631,14 @@ data: [DONE]
 
 ## Changelog
 
+### v2.2.2 (2026-05-19)
+- **Permission Fix** — `chmod -R 755` on all bootstrap binaries after extraction (fixes "Permission denied" on bash)
+- **Shell Auto-Fallback** — if bash fails with permission error, auto-falls back to `/system/bin/sh`
+- **fixPermissions Plugin** — new `BootstrapPlugin.fixPermissions()` for JS to call after install
+- `ensureBuildTools()` uses full paths to `pkg`/`apt` with `chmod 755` before execution
+- `setPermissionsRecursive()` ensures all nested binaries get execute permission
+- Shell auto-refreshes path on each execute call, re-chmods if needed
+
 ### v2.2.1 (2026-05-19)
 - **Auto-Install Build Tools** — `aapt2`, `ecj`, `d8`, `apksigner` auto-installed via `pkg` with full paths and retry logic
 - **Dev Tools Banner** — yellow warning banner on Coding/Agentic mode if tools missing, one-tap Install button

android/app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "ai.z.chat"
         minSdkVersion rootProject.ext.minSdkVersion
         targetSdkVersion rootProject.ext.targetSdkVersion
-        versionCode 14
+        versionCode 15
-        versionName "2.2.1"
+        versionName "2.2.2"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         aaptOptions {
             ignoreAssetsPattern = '!.svn:!.git:!.ds_store:!*.scc:.*:!CVS:!thumbs.db:!picasa.ini:!*~'

android/app/src/main/java/ai/z/chat/BootstrapPlugin.java

@@ -131,6 +131,8 @@ public class BootstrapPlugin extends Plugin {
         sendProgress(call, "Setting permissions...", 85);
         setPermissions(new File(stagingDir, "bin"));
         setPermissions(new File(stagingDir, "libexec"));
+        setPermissionsRecursive(new File(stagingDir, "bin"));
+        setPermissionsRecursive(new File(stagingDir, "libexec"));
 
         new File(homeDir).mkdirs();
         new File(prefixDir + "/tmp").mkdirs();
@@ -147,6 +149,15 @@ public class BootstrapPlugin extends Plugin {
             throw new RuntimeException("Failed to rename staging to prefix");
         }
 
+        try {
+            Runtime rt = Runtime.getRuntime();
+            rt.exec(new String[]{"chmod", "-R", "755", prefixDir + "/bin"}).waitFor();
+            rt.exec(new String[]{"chmod", "-R", "755", prefixDir + "/libexec"}).waitFor();
+            rt.exec(new String[]{"chmod", "755", prefixDir + "/lib"}).waitFor();
+        } catch (Exception ce) {
+            Log.w(TAG, "chmod after rename failed: " + ce.getMessage());
+        }
+
         writeEnvFile();
         writeProfileFile();
 
@@ -316,6 +327,37 @@ public class BootstrapPlugin extends Plugin {
         }
     }
 
+    private void setPermissionsRecursive(File dir) {
+        if (!dir.exists() || !dir.isDirectory()) return;
+        File[] children = dir.listFiles();
+        if (children == null) return;
+        for (File f : children) {
+            if (f.isDirectory()) {
+                f.setExecutable(true, false);
+                setPermissionsRecursive(f);
+            } else if (f.isFile()) {
+                f.setExecutable(true, false);
+                f.setReadable(true, false);
+            }
+        }
+    }
+
+    @PluginMethod
+    public void fixPermissions(PluginCall call) {
+        try {
+            File binDir = new File(prefixDir + "/bin");
+            if (binDir.exists()) {
+                Runtime rt = Runtime.getRuntime();
+                rt.exec(new String[]{"chmod", "-R", "755", prefixDir + "/bin"}).waitFor();
+                rt.exec(new String[]{"chmod", "-R", "755", prefixDir + "/libexec"}).waitFor();
+                setPermissionsRecursive(binDir);
+            }
+            call.resolve(new JSObject().put("fixed", true));
+        } catch (Exception e) {
+            call.reject("Fix permissions failed: " + e.getMessage());
+        }
+    }
+
     private void writeEnvFile() {
         try {
             File envFile = new File(prefixDir + "/etc/termux.env");

android/app/src/main/java/ai/z/chat/ShellPlugin.java

@@ -44,11 +44,27 @@ public class ShellPlugin extends Plugin {
         new File(homeDir + "/bin").mkdirs();
         new File(homeDir + "/tmp").mkdirs();
 
+        refreshShell();
+    }
+
+    private void refreshShell() {
         File bash = new File(prefixDir + "/bin/bash");
         File sh = new File(prefixDir + "/bin/sh");
         if (bash.exists()) {
+            if (!bash.canExecute()) {
+                bash.setExecutable(true, false);
+                try {
+                    Runtime.getRuntime().exec(new String[]{"chmod", "755", bash.getAbsolutePath()}).waitFor();
+                } catch (Exception e) {}
+            }
             shellPath = bash.getAbsolutePath();
         } else if (sh.exists()) {
+            if (!sh.canExecute()) {
+                sh.setExecutable(true, false);
+                try {
+                    Runtime.getRuntime().exec(new String[]{"chmod", "755", sh.getAbsolutePath()}).waitFor();
+                } catch (Exception e) {}
+            }
             shellPath = sh.getAbsolutePath();
         } else {
             shellPath = "/system/bin/sh";
@@ -70,6 +86,7 @@ public class ShellPlugin extends Plugin {
         if (cwd == null || cwd.isEmpty()) cwd = homeDir;
 
         try {
+            refreshShell();
             String[] env = buildEnv();
             String shell = shellPath != null ? shellPath : "sh";
             ProcessBuilder pb = new ProcessBuilder(shell, "-c", command);
@@ -77,7 +94,21 @@ public class ShellPlugin extends Plugin {
             pb.environment().putAll(toEnvMap(env));
             pb.redirectErrorStream(true);
 
-            Process process = pb.start();
+            Process process;
+            try {
+                process = pb.start();
+            } catch (java.io.IOException ioe) {
+                if (shell != null && !shell.equals("/system/bin/sh")) {
+                    Log.w(TAG, "Shell " + shell + " failed, falling back to /system/bin/sh: " + ioe.getMessage());
+                    pb = new ProcessBuilder("/system/bin/sh", "-c", command);
+                    pb.directory(new File(cwd));
+                    pb.environment().putAll(toEnvMap(env));
+                    pb.redirectErrorStream(true);
+                    process = pb.start();
+                } else {
+                    throw ioe;
+                }
+            }
             String processId = String.valueOf(System.currentTimeMillis());
             activeProcesses.put(processId, process);
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "zai-chat",
-  "version": "2.2.1",
+  "version": "2.2.2",
   "description": "Z.AI Chat - Full stack AI chat powered by GLM Coding Plan",
   "main": "index.js",
   "scripts": {

www/index.html

@@ -327,13 +327,23 @@
                     </div>
                     <div class="settings-section">
                         <h3>About</h3>
-                         <p class="about-text">Z.AI Chat v2.2.1</p>
+                         <p class="about-text">Z.AI Chat v2.2.2</p>
                         <p class="about-text">Built with Z.AI SDK &amp; GLM-5.1</p>
                         <p class="about-text">Compatible with Android 15/16</p>
                     </div>
                     <div class="settings-section">
                         <h3>Changelog</h3>
                         <ul class="changelog-list">
+                            <li>
+                                <span class="changelog-version">v2.2.2</span>
+                                <span class="changelog-date">2026-05-19</span>
+                                <ul>
+                                    <li><strong>Permission Fix</strong> — chmod 755 on all bootstrap binaries after extraction (fixes "Permission denied")</li>
+                                    <li><strong>Shell Auto-Fallback</strong> — if bash permission denied, auto-falls back to system sh</li>
+                                    <li><strong>fixPermissions Plugin</strong> — new BootstrapPlugin.fixPermissions() callable from JS</li>
+                                    <li>ensureBuildTools uses full paths to pkg/apt with chmod before execution</li>
+                                </ul>
+                            </li>
                             <li>
                                 <span class="changelog-version">v2.2.1</span>
                                 <span class="changelog-date">2026-05-19</span>

www/js/app.js

@@ -1911,6 +1911,8 @@
             return true;
         }
 
+        try { await Bootstrap.fixPermissions(); } catch(e) {}
+
         if (Shell) {
             var env = await Shell.getEnv();
             termState.homeDir = env.HOME;
@@ -1919,31 +1921,41 @@
             termState.cwd = env.CWD || env.HOME;
         }
 
-        var prefix = termState.homeDir ? termState.homeDir.replace('/home', '') + '/usr' : '';
+        var prefix = termState.homeDir ? termState.homeDir.replace('/home', '') : termState.homeDir || '';
-        var pkgBin = prefix + '/bin/pkg';
+        var prefixUsr = prefix + '/usr';
-        var aptBin = prefix + '/bin/apt';
+        var pkgBin = prefixUsr + '/bin/pkg';
+        var aptBin = prefixUsr + '/bin/apt';
 
-        var pkgExists = await shellExec('test -x "' + pkgBin + '"', termState.homeDir, false);
+        var pkgTest = await shellExec('test -f "' + pkgBin + '"', termState.homeDir, false);
-        var aptExists = await shellExec('test -x "' + aptBin + '"', termState.homeDir, false);
+        var aptTest = await shellExec('test -f "' + aptBin + '"', termState.homeDir, false);
 
-        if (pkgExists.exitCode !== 0 && aptExists.exitCode !== 0) {
+        if (pkgTest.exitCode !== 0 && aptTest.exitCode !== 0) {
-            termPrint('[!] No package manager found. Install Termux bootstrap first.', 'err');
+            var bsStatus;
+            try { bsStatus = await Bootstrap.getStatus(); } catch(e) { bsStatus = { installed: false }; }
+            if (!bsStatus.installed) {
+                termPrint('[!] Termux bootstrap not installed yet.', 'err');
+            } else {
+                termPrint('[!] Package manager not found at ' + pkgBin, 'err');
+            }
             termState.devToolsInstalled = false;
             return false;
         }
 
         termPrint('[*] Installing build tools (aapt2, ecj, dx, apksigner)...', 'info');
-        termPrint('[*] This may take a few minutes on first run...', 'info');
+        termPrint('[*] This may take a few minutes...', 'info');
         showStatusToast('Installing build tools...', 'info');
 
-        var installCmd;
+        var methods = [];
-        if (pkgExists.exitCode === 0) {
+        if (pkgTest.exitCode === 0) {
-            installCmd = pkgBin + ' update -y 2>&1 && ' + pkgBin + ' install -y aapt2 ecj dx apksigner 2>&1';
+            methods.push('chmod 755 "' + pkgBin + '" 2>/dev/null; "' + pkgBin + '" update -y 2>&1 && "' + pkgBin + '" install -y aapt2 ecj dx apksigner 2>&1');
-        } else {
+        }
-            installCmd = aptBin + ' update -y 2>&1 && ' + aptBin + ' install -y aapt2 ecj dx apksigner 2>&1';
+        if (aptTest.exitCode === 0) {
+            methods.push('chmod 755 "' + aptBin + '" 2>/dev/null; "' + aptBin + '" update -y 2>&1 && "' + aptBin + '" install -y aapt2 ecj dx apksigner 2>&1');
         }
 
-        var installResult = await shellExec(installCmd, termState.homeDir, false);
+        for (var m = 0; m < methods.length; m++) {
+            termPrint('[*] Attempt ' + (m + 1) + '...', 'info');
+            var installResult = await shellExec(methods[m], termState.homeDir, false);
             if (installResult.output) {
                 var out = installResult.output;
                 if (out.length > 2000) out = out.substring(0, 1000) + '\n... truncated ...\n' + out.substring(out.length - 800);
@@ -1957,19 +1969,6 @@
                 termState.devToolsInstalled = true;
                 return true;
             }
-
-        if (pkgExists.exitCode === 0 && installResult.exitCode !== 0) {
-            termPrint('[*] Retrying with apt directly...', 'info');
-            var retryResult = await shellExec(aptBin + ' update 2>&1 && ' + aptBin + ' install -y aapt2 ecj dx apksigner 2>&1', termState.homeDir, false);
-            if (retryResult.output) termPrint(retryResult.output.substring(0, 1500).replace(/\n$/, ''), '');
-
-            var recheck2 = await shellExec('command -v aapt2 >/dev/null 2>&1 && command -v ecj >/dev/null 2>&1', termState.homeDir, false);
-            if (recheck2.exitCode === 0) {
-                termPrint('[OK] Build tools installed!', 'success');
-                showStatusToast('Build tools installed!', 'success');
-                termState.devToolsInstalled = true;
-                return true;
-            }
         }
 
         termPrint('[!] Auto-install failed. Open Terminal and run:', 'err');
@@ -2029,6 +2028,7 @@
             if (!bsStatus.installed) {
                 try {
                     await Bootstrap.install();
+                    try { await Bootstrap.fixPermissions(); } catch(e) {}
                     if (Shell) {
                         var env = await Shell.getEnv();
                         termState.homeDir = env.HOME;
@@ -2037,8 +2037,9 @@
                         termState.cwd = env.CWD || env.HOME;
                     }
                     updateCwdDisplay();
+                    await shellExec('echo shell-ok', termState.homeDir, false);
                 } catch(e) {
-                    btn.textContent = 'Bootstrap failed';
+                    btn.textContent = 'Bootstrap failed: ' + e.message;
                     return;
                 }
             }
@@ -2355,14 +2356,10 @@
 
         try {
             var result = await Bootstrap.install();
-            statusEl.innerHTML = '<p style="color:var(--success);font-size:16px;font-weight:700">&#10004; Termux environment installed!</p>' +
-                '<p>Full Linux shell with bash, coreutils, and package manager ready.</p>' +
-                '<p id="devsetup-tools-status">Installing build tools (aapt2, ecj, d8, apksigner)...</p>';
-            btn.querySelector('.btn-text').textContent = 'Installed';
-            btn.querySelector('.btn-loader').style.display = 'none';
 
-            termState.homeDir = result.prefixDir ? result.prefixDir.replace('/usr', '') : termState.homeDir;
+            progressText.textContent = 'Fixing file permissions...';
-            termState.cwd = termState.homeDir + '/home';
+            try { await Bootstrap.fixPermissions(); } catch(e) {}
+
             if (Shell) {
                 var env = await Shell.getEnv();
                 termState.homeDir = env.HOME;
@@ -2372,13 +2369,29 @@
             }
             updateCwdDisplay();
 
+            var shellTest = await shellExec('echo OK', termState.homeDir, false);
+            if (shellTest.exitCode !== 0) {
+                statusEl.innerHTML = '<p style="color:var(--danger)">Shell test failed: ' + (shellTest.output || 'unknown error') + '</p>' +
+                    '<p>Try restarting the app.</p>';
+                btn.disabled = false;
+                btn.querySelector('.btn-text').textContent = 'Retry Install';
+                btn.querySelector('.btn-loader').style.display = 'none';
+                return;
+            }
+
+            statusEl.innerHTML = '<p style="color:var(--success);font-size:16px;font-weight:700">&#10004; Termux environment installed!</p>' +
+                '<p id="devsetup-tools-status">Installing build tools (aapt2, ecj, d8, apksigner)...</p>';
+
             var toolsOk = await ensureBuildTools();
             var toolsStatus = $('#devsetup-tools-status');
             if (toolsStatus) {
                 toolsStatus.innerHTML = toolsOk
-                    ? '<span style="color:var(--success)">&#10004; Build tools installed (aapt2, ecj, d8, apksigner)</span>'
+                    ? '<span style="color:var(--success)">&#10004; All tools installed — ready to build!</span>'
-                    : '<span style="color:var(--warning)">Build tools not installed. Run: pkg install aapt2 ecj dx apksigner</span>';
+                    : '<span style="color:var(--warning)">Build tools not installed. Open Terminal and run: pkg install aapt2 ecj dx apksigner</span>';
             }
+
+            btn.querySelector('.btn-text').textContent = 'Installed';
+            btn.querySelector('.btn-loader').style.display = 'none';
         } catch(e) {
             statusEl.innerHTML = '<p style="color:var(--danger)">Install failed: ' + e.message + '</p>' +
                 '<p>Check your internet connection and try again.</p>';