installd: fix forward locking symlink

installd was not creating a compatibility symlink when
installing a forward locked application.  Fix.

Bug: 7121527
Change-Id: Ied507ab2b759d8658af563e6ac8f0dbb0d286cce

Author: nickkral

cmds/installd/commands.c

@@ -420,7 +420,7 @@ int protect(char *pkgname, gid_t gid)
         return -1;
     }
     if (chmod(pkgpath, S_IRUSR|S_IWUSR|S_IRGRP) < 0) {
-        ALOGE("failed to chmod '%s': %s\n", pkgpath, strerror(errno));
+        ALOGE("protect(): failed to chmod '%s': %s\n", pkgpath, strerror(errno));
         return -1;
     }
 
@@ -1014,13 +1014,13 @@ int linklib(const char* dataDir, const char* asecLibDir)
 
     if (stat(dataDir, &s) < 0) return -1;
 
-    if (chown(dataDir, 0, 0) < 0) {
+    if (chown(dataDir, AID_INSTALL, AID_INSTALL) < 0) {
         ALOGE("failed to chown '%s': %s\n", dataDir, strerror(errno));
         return -1;
     }
 
     if (chmod(dataDir, 0700) < 0) {
-        ALOGE("failed to chmod '%s': %s\n", dataDir, strerror(errno));
+        ALOGE("linklib() 1: failed to chmod '%s': %s\n", dataDir, strerror(errno));
         rc = -1;
         goto out;
     }
@@ -1058,7 +1058,7 @@ int linklib(const char* dataDir, const char* asecLibDir)
 
 out:
     if (chmod(dataDir, s.st_mode) < 0) {
-        ALOGE("failed to chmod '%s': %s\n", dataDir, strerror(errno));
+        ALOGE("linklib() 2: failed to chmod '%s': %s\n", dataDir, strerror(errno));
         rc = -errno;
     }
 
@@ -1091,13 +1091,13 @@ int unlinklib(const char* dataDir)
         return -1;
     }
 
-    if (chown(dataDir, 0, 0) < 0) {
+    if (chown(dataDir, AID_INSTALL, AID_INSTALL) < 0) {
         ALOGE("failed to chown '%s': %s\n", dataDir, strerror(errno));
         return -1;
     }
 
     if (chmod(dataDir, 0700) < 0) {
-        ALOGE("failed to chmod '%s': %s\n", dataDir, strerror(errno));
+        ALOGE("unlinklib() 1: failed to chmod '%s': %s\n", dataDir, strerror(errno));
         rc = -1;
         goto out;
     }
@@ -1140,7 +1140,7 @@ int unlinklib(const char* dataDir)
 
 out:
     if (chmod(dataDir, s.st_mode) < 0) {
-        ALOGE("failed to chmod '%s': %s\n", dataDir, strerror(errno));
+        ALOGE("unlinklib() 2: failed to chmod '%s': %s\n", dataDir, strerror(errno));
         rc = -1;
     }
 

core/tests/coretests/src/android/content/pm/PackageManagerTests.java

@@ -395,6 +395,14 @@ private void assertInstall(PackageParser.Package pkg, int flags, int expInstallL
                     assertTrue("The native library path (" + info.nativeLibraryDir
                             + ") should start with " + SECURE_CONTAINERS_PREFIX,
                             info.nativeLibraryDir.startsWith(SECURE_CONTAINERS_PREFIX));
+                    try {
+                        String compatLib = new File(info.dataDir + "/lib").getCanonicalPath();
+                        assertEquals("The compatibility lib directory should be a symbolic link to "
+                                + info.nativeLibraryDir,
+                                info.nativeLibraryDir, compatLib);
+                    } catch (IOException e) {
+                        fail("compat check: Can't read " + info.dataDir + "/lib");
+                    }
                 } else {
                     assertFalse((info.flags & ApplicationInfo.FLAG_FORWARD_LOCK) != 0);
                     assertEquals(srcPath, appInstallPath);

services/java/com/android/server/pm/PackageManagerService.java

@@ -4110,8 +4110,13 @@ private PackageParser.Package scanPackageLI(PackageParser.Package pkg,
                     NativeLibraryHelper.copyNativeBinariesIfNeededLI(scanFile, nativeLibraryDir);
                 } else {
                     Slog.i(TAG, "Linking native library dir for " + path);
-                    mInstaller.linkNativeLibraryDirectory(dataPathString,
+                    int ret = mInstaller.linkNativeLibraryDirectory(dataPathString,
                             pkg.applicationInfo.nativeLibraryDir);
+                    if (ret < 0) {
+                        Slog.w(TAG, "Failed linking native library dir for " + path);
+                        mLastScanError = PackageManager.MOVE_FAILED_INSUFFICIENT_STORAGE;
+                        return null;
+                    }
                 }
             } catch (IOException ioe) {
                 Log.e(TAG, "Unable to get canonical file " + ioe.toString());