diff --git a/cmds/installd/commands.c b/cmds/installd/commands.c
new file mode 100644
index 0000000..59bcda1
--- /dev/null
+++ b/cmds/installd/commands.c
@@ -0,0 +1,1136 @@
+/*
+** Copyright 2008, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+
+#include <linux/capability.h>
+#include "installd.h"
+#include <diskusage/dirsize.h>
+#include <selinux/android.h>
+
+/* Directory records that are used in execution of commands. */
+dir_rec_t android_data_dir;
+dir_rec_t android_asec_dir;
+dir_rec_t android_app_dir;
+dir_rec_t android_app_private_dir;
+dir_rec_t android_app_lib_dir;
+dir_rec_t android_media_dir;
+dir_rec_array_t android_system_dirs;
+
+int install(const char *pkgname, uid_t uid, gid_t gid)
+{
+    char pkgdir[PKG_PATH_MAX];
+    char libsymlink[PKG_PATH_MAX];
+    char applibdir[PKG_PATH_MAX];
+    struct stat libStat;
+
+    if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) {
+        ALOGE("invalid uid/gid: %d %d\n", uid, gid);
+        return -1;
+    }
+
+    if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, 0)) {
+        ALOGE("cannot create package path\n");
+        return -1;
+    }
+
+    if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, 0)) {
+        ALOGE("cannot create package lib symlink origin path\n");
+        return -1;
+    }
+
+    if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) {
+        ALOGE("cannot create package lib symlink dest path\n");
+        return -1;
+    }
+
+    if (mkdir(pkgdir, 0751) < 0) {
+        ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno));
+        return -1;
+    }
+    if (chmod(pkgdir, 0751) < 0) {
+        ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(pkgdir);
+        return -1;
+    }
+
+    if (lstat(libsymlink, &libStat) < 0) {
+        if (errno != ENOENT) {
+            ALOGE("couldn't stat lib dir: %s\n", strerror(errno));
+            return -1;
+        }
+    } else {
+        if (S_ISDIR(libStat.st_mode)) {
+            if (delete_dir_contents(libsymlink, 1, 0) < 0) {
+                ALOGE("couldn't delete lib directory during install for: %s", libsymlink);
+                return -1;
+            }
+        } else if (S_ISLNK(libStat.st_mode)) {
+            if (unlink(libsymlink) < 0) {
+                ALOGE("couldn't unlink lib directory during install for: %s", libsymlink);
+                return -1;
+            }
+        }
+    }
+
+    if (symlink(applibdir, libsymlink) < 0) {
+        ALOGE("couldn't symlink directory '%s' -> '%s': %s\n", libsymlink, applibdir,
+                strerror(errno));
+        unlink(pkgdir);
+        return -1;
+    }
+
+    if (selinux_android_setfilecon(libsymlink, pkgname, AID_SYSTEM) < 0) {
+        ALOGE("cannot setfilecon dir '%s': %s\n", libsymlink, strerror(errno));
+        unlink(libsymlink);
+        unlink(pkgdir);
+        return -1;
+    }
+
+    if (selinux_android_setfilecon(pkgdir, pkgname, uid) < 0) {
+        ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(libsymlink);
+        unlink(pkgdir);
+        return -errno;
+    }
+
+    if (chown(pkgdir, uid, gid) < 0) {
+        ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(libsymlink);
+        unlink(pkgdir);
+        return -1;
+    }
+
+    return 0;
+}
+
+int uninstall(const char *pkgname, uid_t persona)
+{
+    char pkgdir[PKG_PATH_MAX];
+
+    if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, persona))
+        return -1;
+
+    /* delete contents AND directory, no exceptions */
+    return delete_dir_contents(pkgdir, 1, NULL);
+}
+
+int renamepkg(const char *oldpkgname, const char *newpkgname)
+{
+    char oldpkgdir[PKG_PATH_MAX];
+    char newpkgdir[PKG_PATH_MAX];
+
+    if (create_pkg_path(oldpkgdir, oldpkgname, PKG_DIR_POSTFIX, 0))
+        return -1;
+    if (create_pkg_path(newpkgdir, newpkgname, PKG_DIR_POSTFIX, 0))
+        return -1;
+
+    if (rename(oldpkgdir, newpkgdir) < 0) {
+        ALOGE("cannot rename dir '%s' to '%s': %s\n", oldpkgdir, newpkgdir, strerror(errno));
+        return -errno;
+    }
+    return 0;
+}
+
+int fix_uid(const char *pkgname, uid_t uid, gid_t gid)
+{
+    char pkgdir[PKG_PATH_MAX];
+    struct stat s;
+    int rc = 0;
+
+    if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) {
+        ALOGE("invalid uid/gid: %d %d\n", uid, gid);
+        return -1;
+    }
+
+    if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, 0)) {
+        ALOGE("cannot create package path\n");
+        return -1;
+    }
+
+    if (stat(pkgdir, &s) < 0) return -1;
+
+    if (s.st_uid != 0 || s.st_gid != 0) {
+        ALOGE("fixing uid of non-root pkg: %s %lu %lu\n", pkgdir, s.st_uid, s.st_gid);
+        return -1;
+    }
+
+    if (chmod(pkgdir, 0751) < 0) {
+        ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(pkgdir);
+        return -errno;
+    }
+    if (chown(pkgdir, uid, gid) < 0) {
+        ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(pkgdir);
+        return -errno;
+    }
+
+    return 0;
+}
+
+int delete_user_data(const char *pkgname, uid_t persona)
+{
+    char pkgdir[PKG_PATH_MAX];
+
+    if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, persona))
+        return -1;
+
+    /* delete contents, excluding "lib", but not the directory itself */
+    return delete_dir_contents(pkgdir, 0, "lib");
+}
+
+int make_user_data(const char *pkgname, uid_t uid, uid_t persona)
+{
+    char pkgdir[PKG_PATH_MAX];
+    char applibdir[PKG_PATH_MAX];
+    char libsymlink[PKG_PATH_MAX];
+    struct stat libStat;
+
+    // Create the data dir for the package
+    if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, persona)) {
+        return -1;
+    }
+    if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, persona)) {
+        ALOGE("cannot create package lib symlink origin path\n");
+        return -1;
+    }
+    if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) {
+        ALOGE("cannot create package lib symlink dest path\n");
+        return -1;
+    }
+
+    if (mkdir(pkgdir, 0751) < 0) {
+        ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno));
+        return -errno;
+    }
+    if (chmod(pkgdir, 0751) < 0) {
+        ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(pkgdir);
+        return -errno;
+    }
+
+    if (lstat(libsymlink, &libStat) < 0) {
+        if (errno != ENOENT) {
+            ALOGE("couldn't stat lib dir for non-primary: %s\n", strerror(errno));
+            unlink(pkgdir);
+            return -1;
+        }
+    } else {
+        if (S_ISDIR(libStat.st_mode)) {
+            if (delete_dir_contents(libsymlink, 1, 0) < 0) {
+                ALOGE("couldn't delete lib directory during install for non-primary: %s",
+                        libsymlink);
+                unlink(pkgdir);
+                return -1;
+            }
+        } else if (S_ISLNK(libStat.st_mode)) {
+            if (unlink(libsymlink) < 0) {
+                ALOGE("couldn't unlink lib directory during install for non-primary: %s",
+                        libsymlink);
+                unlink(pkgdir);
+                return -1;
+            }
+        }
+    }
+
+    if (symlink(applibdir, libsymlink) < 0) {
+        ALOGE("couldn't symlink directory for non-primary '%s' -> '%s': %s\n", libsymlink,
+                applibdir, strerror(errno));
+        unlink(pkgdir);
+        return -1;
+    }
+
+    if (selinux_android_setfilecon(libsymlink, pkgname, AID_SYSTEM) < 0) {
+        ALOGE("cannot setfilecon dir '%s': %s\n", libsymlink, strerror(errno));
+        unlink(libsymlink);
+        unlink(pkgdir);
+        return -errno;
+    }
+
+    if (selinux_android_setfilecon(pkgdir, pkgname, uid) < 0) {
+        ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(libsymlink);
+        unlink(pkgdir);
+        return -errno;
+    }
+
+    if (chown(pkgdir, uid, uid) < 0) {
+        ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(libsymlink);
+        unlink(pkgdir);
+        return -errno;
+    }
+
+    return 0;
+}
+
+int delete_persona(uid_t persona)
+{
+    char data_path[PKG_PATH_MAX];
+    if (create_persona_path(data_path, persona)) {
+        return -1;
+    }
+    if (delete_dir_contents(data_path, 1, NULL)) {
+        return -1;
+    }
+
+    char media_path[PATH_MAX];
+    if (create_persona_media_path(media_path, (userid_t) persona) == -1) {
+        return -1;
+    }
+    if (delete_dir_contents(media_path, 1, NULL) == -1) {
+        return -1;
+    }
+
+    return 0;
+}
+
+int clone_persona_data(uid_t src_persona, uid_t target_persona, int copy)
+{
+    char src_data_dir[PKG_PATH_MAX];
+    char pkg_path[PKG_PATH_MAX];
+    DIR *d;
+    struct dirent *de;
+    struct stat s;
+    uid_t uid;
+
+    if (create_persona_path(src_data_dir, src_persona)) {
+        return -1;
+    }
+
+    d = opendir(src_data_dir);
+    if (d != NULL) {
+        while ((de = readdir(d))) {
+            const char *name = de->d_name;
+
+            if (de->d_type == DT_DIR) {
+                int subfd;
+                    /* always skip "." and ".." */
+                if (name[0] == '.') {
+                    if (name[1] == 0) continue;
+                    if ((name[1] == '.') && (name[2] == 0)) continue;
+                }
+                /* Create the full path to the package's data dir */
+                create_pkg_path(pkg_path, name, PKG_DIR_POSTFIX, src_persona);
+                /* Get the file stat */
+                if (stat(pkg_path, &s) < 0) continue;
+                /* Get the uid of the package */
+                ALOGI("Adding datadir for uid = %lu\n", s.st_uid);
+                uid = (uid_t) s.st_uid % PER_USER_RANGE;
+                /* Create the directory for the target */
+                make_user_data(name, uid + target_persona * PER_USER_RANGE,
+                               target_persona);
+            }
+        }
+        closedir(d);
+    }
+
+    if (ensure_media_user_dirs((userid_t) target_persona) == -1) {
+        return -1;
+    }
+
+    return 0;
+}
+
+int delete_cache(const char *pkgname, uid_t persona)
+{
+    char cachedir[PKG_PATH_MAX];
+
+    if (create_pkg_path(cachedir, pkgname, CACHE_DIR_POSTFIX, persona))
+        return -1;
+
+        /* delete contents, not the directory, no exceptions */
+    return delete_dir_contents(cachedir, 0, 0);
+}
+
+/* Try to ensure free_size bytes of storage are available.
+ * Returns 0 on success.
+ * This is rather simple-minded because doing a full LRU would
+ * be potentially memory-intensive, and without atime it would
+ * also require that apps constantly modify file metadata even
+ * when just reading from the cache, which is pretty awful.
+ */
+int free_cache(int64_t free_size)
+{
+    cache_t* cache;
+    int64_t avail;
+    DIR *d;
+    struct dirent *de;
+    char tmpdir[PATH_MAX];
+    char *dirpos;
+
+    avail = data_disk_free();
+    if (avail < 0) return -1;
+
+    ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", free_size, avail);
+    if (avail >= free_size) return 0;
+
+    cache = start_cache_collection();
+
+    // Collect cache files for primary user.
+    if (create_persona_path(tmpdir, 0) == 0) {
+        //ALOGI("adding cache files from %s\n", tmpdir);
+        add_cache_files(cache, tmpdir, "cache");
+    }
+
+    // Search for other users and add any cache files from them.
+    snprintf(tmpdir, sizeof(tmpdir), "%s%s", android_data_dir.path,
+            SECONDARY_USER_PREFIX);
+    dirpos = tmpdir + strlen(tmpdir);
+    d = opendir(tmpdir);
+    if (d != NULL) {
+        while ((de = readdir(d))) {
+            if (de->d_type == DT_DIR) {
+                const char *name = de->d_name;
+                    /* always skip "." and ".." */
+                if (name[0] == '.') {
+                    if (name[1] == 0) continue;
+                    if ((name[1] == '.') && (name[2] == 0)) continue;
+                }
+                if ((strlen(name)+(dirpos-tmpdir)) < (sizeof(tmpdir)-1)) {
+                    strcpy(dirpos, name);
+                    //ALOGI("adding cache files from %s\n", tmpdir);
+                    add_cache_files(cache, tmpdir, "cache");
+                } else {
+                    ALOGW("Path exceeds limit: %s%s", tmpdir, name);
+                }
+            }
+        }
+        closedir(d);
+    }
+
+    // Collect cache files on external storage for all users (if it is mounted as part
+    // of the internal storage).
+    strcpy(tmpdir, android_media_dir.path);
+    dirpos = tmpdir + strlen(tmpdir);
+    d = opendir(tmpdir);
+    if (d != NULL) {
+        while ((de = readdir(d))) {
+            if (de->d_type == DT_DIR) {
+                const char *name = de->d_name;
+                    /* skip any dir that doesn't start with a number, so not a user */
+                if (name[0] < '0' || name[0] > '9') {
+                    continue;
+                }
+                if ((strlen(name)+(dirpos-tmpdir)) < (sizeof(tmpdir)-1)) {
+                    strcpy(dirpos, name);
+                    if (lookup_media_dir(tmpdir, "Android") == 0
+                            && lookup_media_dir(tmpdir, "data") == 0) {
+                        //ALOGI("adding cache files from %s\n", tmpdir);
+                        add_cache_files(cache, tmpdir, "cache");
+                    }
+                } else {
+                    ALOGW("Path exceeds limit: %s%s", tmpdir, name);
+                }
+            }
+        }
+        closedir(d);
+    }
+
+    clear_cache_files(cache, free_size);
+    finish_cache_collection(cache);
+
+    return data_disk_free() >= free_size ? 0 : -1;
+}
+
+int move_dex(const char *src, const char *dst)
+{
+    char src_dex[PKG_PATH_MAX];
+    char dst_dex[PKG_PATH_MAX];
+
+    if (validate_apk_path(src)) return -1;
+    if (validate_apk_path(dst)) return -1;
+
+    if (create_cache_path(src_dex, src)) return -1;
+    if (create_cache_path(dst_dex, dst)) return -1;
+
+    ALOGV("move %s -> %s\n", src_dex, dst_dex);
+    if (rename(src_dex, dst_dex) < 0) {
+        ALOGE("Couldn't move %s: %s\n", src_dex, strerror(errno));
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+int rm_dex(const char *path)
+{
+    char dex_path[PKG_PATH_MAX];
+
+    if (validate_apk_path(path)) return -1;
+    if (create_cache_path(dex_path, path)) return -1;
+
+    ALOGV("unlink %s\n", dex_path);
+    if (unlink(dex_path) < 0) {
+        ALOGE("Couldn't unlink %s: %s\n", dex_path, strerror(errno));
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+int get_size(const char *pkgname, int persona, const char *apkpath,
+             const char *fwdlock_apkpath, const char *asecpath,
+             int64_t *_codesize, int64_t *_datasize, int64_t *_cachesize,
+             int64_t* _asecsize)
+{
+    DIR *d;
+    int dfd;
+    struct dirent *de;
+    struct stat s;
+    char path[PKG_PATH_MAX];
+
+    int64_t codesize = 0;
+    int64_t datasize = 0;
+    int64_t cachesize = 0;
+    int64_t asecsize = 0;
+
+        /* count the source apk as code -- but only if it's not
+         * on the /system partition and its not on the sdcard.
+         */
+    if (validate_system_app_path(apkpath) &&
+            strncmp(apkpath, android_asec_dir.path, android_asec_dir.len) != 0) {
+        if (stat(apkpath, &s) == 0) {
+            codesize += stat_size(&s);
+        }
+    }
+        /* count the forward locked apk as code if it is given
+         */
+    if (fwdlock_apkpath != NULL && fwdlock_apkpath[0] != '!') {
+        if (stat(fwdlock_apkpath, &s) == 0) {
+            codesize += stat_size(&s);
+        }
+    }
+        /* count the cached dexfile as code */
+    if (!create_cache_path(path, apkpath)) {
+        if (stat(path, &s) == 0) {
+            codesize += stat_size(&s);
+        }
+    }
+
+        /* add in size of any libraries */
+    if (!create_pkg_path_in_dir(path, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) {
+        d = opendir(path);
+        if (d != NULL) {
+            dfd = dirfd(d);
+            codesize += calculate_dir_size(dfd);
+            closedir(d);
+        }
+    }
+
+        /* compute asec size if it is given
+         */
+    if (asecpath != NULL && asecpath[0] != '!') {
+        if (stat(asecpath, &s) == 0) {
+            asecsize += stat_size(&s);
+        }
+    }
+
+    if (create_pkg_path(path, pkgname, PKG_DIR_POSTFIX, persona)) {
+        goto done;
+    }
+
+    d = opendir(path);
+    if (d == NULL) {
+        goto done;
+    }
+    dfd = dirfd(d);
+
+    /* most stuff in the pkgdir is data, except for the "cache"
+     * directory and below, which is cache, and the "lib" directory
+     * and below, which is code...
+     */
+    while ((de = readdir(d))) {
+        const char *name = de->d_name;
+
+        if (de->d_type == DT_DIR) {
+            int subfd;
+            int64_t statsize = 0;
+            int64_t dirsize = 0;
+                /* always skip "." and ".." */
+            if (name[0] == '.') {
+                if (name[1] == 0) continue;
+                if ((name[1] == '.') && (name[2] == 0)) continue;
+            }
+            if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) {
+                statsize = stat_size(&s);
+            }
+            subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY);
+            if (subfd >= 0) {
+                dirsize = calculate_dir_size(subfd);
+            }
+            if(!strcmp(name,"lib")) {
+                codesize += dirsize + statsize;
+            } else if(!strcmp(name,"cache")) {
+                cachesize += dirsize + statsize;
+            } else {
+                datasize += dirsize + statsize;
+            }
+        } else if (de->d_type == DT_LNK && !strcmp(name,"lib")) {
+            // This is the symbolic link to the application's library
+            // code.  We'll count this as code instead of data, since
+            // it is not something that the app creates.
+            if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) {
+                codesize += stat_size(&s);
+            }
+        } else {
+            if (fstatat(dfd, name, &s, AT_SYMLINK_NOFOLLOW) == 0) {
+                datasize += stat_size(&s);
+            }
+        }
+    }
+    closedir(d);
+done:
+    *_codesize = codesize;
+    *_datasize = datasize;
+    *_cachesize = cachesize;
+    *_asecsize = asecsize;
+    return 0;
+}
+
+
+/* a simpler version of dexOptGenerateCacheFileName() */
+int create_cache_path(char path[PKG_PATH_MAX], const char *src)
+{
+    char *tmp;
+    int srclen;
+    int dstlen;
+
+    srclen = strlen(src);
+
+        /* demand that we are an absolute path */
+    if ((src == 0) || (src[0] != '/') || strstr(src,"..")) {
+        return -1;
+    }
+
+    if (srclen > PKG_PATH_MAX) {        // XXX: PKG_NAME_MAX?
+        return -1;
+    }
+
+    dstlen = srclen + strlen(DALVIK_CACHE_PREFIX) + 
+        strlen(DALVIK_CACHE_POSTFIX) + 1;
+    
+    if (dstlen > PKG_PATH_MAX) {
+        return -1;
+    }
+
+    sprintf(path,"%s%s%s",
+            DALVIK_CACHE_PREFIX,
+            src + 1, /* skip the leading / */
+            DALVIK_CACHE_POSTFIX);
+    
+    for(tmp = path + strlen(DALVIK_CACHE_PREFIX); *tmp; tmp++) {
+        if (*tmp == '/') {
+            *tmp = '@';
+        }
+    }
+
+    return 0;
+}
+
+static void run_dexopt(int zip_fd, int odex_fd, const char* input_file_name,
+    const char* dexopt_flags)
+{
+    static const char* DEX_OPT_BIN = "/system/bin/dexopt";
+    static const int MAX_INT_LEN = 12;      // '-'+10dig+'\0' -OR- 0x+8dig
+    char zip_num[MAX_INT_LEN];
+    char odex_num[MAX_INT_LEN];
+
+    sprintf(zip_num, "%d", zip_fd);
+    sprintf(odex_num, "%d", odex_fd);
+
+    execl(DEX_OPT_BIN, DEX_OPT_BIN, "--zip", zip_num, odex_num, input_file_name,
+        dexopt_flags, (char*) NULL);
+    ALOGE("execl(%s) failed: %s\n", DEX_OPT_BIN, strerror(errno));
+}
+
+static int wait_dexopt(pid_t pid, const char* apk_path)
+{
+    int status;
+    pid_t got_pid;
+
+    /*
+     * Wait for the optimization process to finish.
+     */
+    while (1) {
+        got_pid = waitpid(pid, &status, 0);
+        if (got_pid == -1 && errno == EINTR) {
+            printf("waitpid interrupted, retrying\n");
+        } else {
+            break;
+        }
+    }
+    if (got_pid != pid) {
+        ALOGW("waitpid failed: wanted %d, got %d: %s\n",
+            (int) pid, (int) got_pid, strerror(errno));
+        return 1;
+    }
+
+    if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
+        ALOGV("DexInv: --- END '%s' (success) ---\n", apk_path);
+        return 0;
+    } else {
+        ALOGW("DexInv: --- END '%s' --- status=0x%04x, process failed\n",
+            apk_path, status);
+        return status;      /* always nonzero */
+    }
+}
+
+int dexopt(const char *apk_path, uid_t uid, int is_public)
+{
+    struct utimbuf ut;
+    struct stat apk_stat, dex_stat;
+    char dex_path[PKG_PATH_MAX];
+    char dexopt_flags[PROPERTY_VALUE_MAX];
+    char *end;
+    int res, zip_fd=-1, odex_fd=-1;
+
+        /* Before anything else: is there a .odex file?  If so, we have
+         * pre-optimized the apk and there is nothing to do here.
+         */
+    if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) {
+        return -1;
+    }
+
+    /* platform-specific flags affecting optimization and verification */
+    property_get("dalvik.vm.dexopt-flags", dexopt_flags, "");
+
+    strcpy(dex_path, apk_path);
+    end = strrchr(dex_path, '.');
+    if (end != NULL) {
+        strcpy(end, ".odex");
+        if (stat(dex_path, &dex_stat) == 0) {
+            return 0;
+        }
+    }
+
+    if (create_cache_path(dex_path, apk_path)) {
+        return -1;
+    }
+
+    memset(&apk_stat, 0, sizeof(apk_stat));
+    stat(apk_path, &apk_stat);
+
+    zip_fd = open(apk_path, O_RDONLY, 0);
+    if (zip_fd < 0) {
+        ALOGE("dexopt cannot open '%s' for input\n", apk_path);
+        return -1;
+    }
+
+    unlink(dex_path);
+    odex_fd = open(dex_path, O_RDWR | O_CREAT | O_EXCL, 0644);
+    if (odex_fd < 0) {
+        ALOGE("dexopt cannot open '%s' for output\n", dex_path);
+        goto fail;
+    }
+    if (fchmod(odex_fd,
+               S_IRUSR|S_IWUSR|S_IRGRP |
+               (is_public ? S_IROTH : 0)) < 0) {
+        ALOGE("dexopt cannot chmod '%s'\n", dex_path);
+        goto fail;
+    }
+    if (fchown(odex_fd, AID_SYSTEM, uid) < 0) {
+        ALOGE("dexopt cannot chown '%s'\n", dex_path);
+        goto fail;
+    }
+
+    ALOGV("DexInv: --- BEGIN '%s' ---\n", apk_path);
+
+    pid_t pid;
+    pid = fork();
+    if (pid == 0) {
+        /* child -- drop privileges before continuing */
+        if (setgid(uid) != 0) {
+            ALOGE("setgid(%d) failed during dexopt\n", uid);
+            exit(64);
+        }
+        if (setuid(uid) != 0) {
+            ALOGE("setuid(%d) during dexopt\n", uid);
+            exit(65);
+        }
+        // drop capabilities
+        struct __user_cap_header_struct capheader;
+        struct __user_cap_data_struct capdata[2];
+        memset(&capheader, 0, sizeof(capheader));
+        memset(&capdata, 0, sizeof(capdata));
+        capheader.version = _LINUX_CAPABILITY_VERSION_3;
+        if (capset(&capheader, &capdata[0]) < 0) {
+            ALOGE("capset failed: %s\n", strerror(errno));
+            exit(66);
+        }
+        if (flock(odex_fd, LOCK_EX | LOCK_NB) != 0) {
+            ALOGE("flock(%s) failed: %s\n", dex_path, strerror(errno));
+            exit(67);
+        }
+
+        run_dexopt(zip_fd, odex_fd, apk_path, dexopt_flags);
+        exit(68);   /* only get here on exec failure */
+    } else {
+        res = wait_dexopt(pid, apk_path);
+        if (res != 0) {
+            ALOGE("dexopt failed on '%s' res = %d\n", dex_path, res);
+            goto fail;
+        }
+    }
+
+    ut.actime = apk_stat.st_atime;
+    ut.modtime = apk_stat.st_mtime;
+    utime(dex_path, &ut);
+    
+    close(odex_fd);
+    close(zip_fd);
+    return 0;
+
+fail:
+    if (odex_fd >= 0) {
+        close(odex_fd);
+        unlink(dex_path);
+    }
+    if (zip_fd >= 0) {
+        close(zip_fd);
+    }
+    return -1;
+}
+
+void mkinnerdirs(char* path, int basepos, mode_t mode, int uid, int gid,
+        struct stat* statbuf)
+{
+    while (path[basepos] != 0) {
+        if (path[basepos] == '/') {
+            path[basepos] = 0;
+            if (lstat(path, statbuf) < 0) {
+                ALOGV("Making directory: %s\n", path);
+                if (mkdir(path, mode) == 0) {
+                    chown(path, uid, gid);
+                } else {
+                    ALOGW("Unable to make directory %s: %s\n", path, strerror(errno));
+                }
+            }
+            path[basepos] = '/';
+            basepos++;
+        }
+        basepos++;
+    }
+}
+
+int movefileordir(char* srcpath, char* dstpath, int dstbasepos,
+        int dstuid, int dstgid, struct stat* statbuf)
+{
+    DIR *d;
+    struct dirent *de;
+    int res;
+
+    int srcend = strlen(srcpath);
+    int dstend = strlen(dstpath);
+    
+    if (lstat(srcpath, statbuf) < 0) {
+        ALOGW("Unable to stat %s: %s\n", srcpath, strerror(errno));
+        return 1;
+    }
+    
+    if ((statbuf->st_mode&S_IFDIR) == 0) {
+        mkinnerdirs(dstpath, dstbasepos, S_IRWXU|S_IRWXG|S_IXOTH,
+                dstuid, dstgid, statbuf);
+        ALOGV("Renaming %s to %s (uid %d)\n", srcpath, dstpath, dstuid);
+        if (rename(srcpath, dstpath) >= 0) {
+            if (chown(dstpath, dstuid, dstgid) < 0) {
+                ALOGE("cannot chown %s: %s\n", dstpath, strerror(errno));
+                unlink(dstpath);
+                return 1;
+            }
+        } else {
+            ALOGW("Unable to rename %s to %s: %s\n",
+                srcpath, dstpath, strerror(errno));
+            return 1;
+        }
+        return 0;
+    }
+
+    d = opendir(srcpath);
+    if (d == NULL) {
+        ALOGW("Unable to opendir %s: %s\n", srcpath, strerror(errno));
+        return 1;
+    }
+
+    res = 0;
+    
+    while ((de = readdir(d))) {
+        const char *name = de->d_name;
+            /* always skip "." and ".." */
+        if (name[0] == '.') {
+            if (name[1] == 0) continue;
+            if ((name[1] == '.') && (name[2] == 0)) continue;
+        }
+        
+        if ((srcend+strlen(name)) >= (PKG_PATH_MAX-2)) {
+            ALOGW("Source path too long; skipping: %s/%s\n", srcpath, name);
+            continue;
+        }
+        
+        if ((dstend+strlen(name)) >= (PKG_PATH_MAX-2)) {
+            ALOGW("Destination path too long; skipping: %s/%s\n", dstpath, name);
+            continue;
+        }
+        
+        srcpath[srcend] = dstpath[dstend] = '/';
+        strcpy(srcpath+srcend+1, name);
+        strcpy(dstpath+dstend+1, name);
+        
+        if (movefileordir(srcpath, dstpath, dstbasepos, dstuid, dstgid, statbuf) != 0) {
+            res = 1;
+        }
+        
+        // Note: we will be leaving empty directories behind in srcpath,
+        // but that is okay, the package manager will be erasing all of the
+        // data associated with .apks that disappear.
+        
+        srcpath[srcend] = dstpath[dstend] = 0;
+    }
+    
+    closedir(d);
+    return res;
+}
+
+int movefiles()
+{
+    DIR *d;
+    int dfd, subfd;
+    struct dirent *de;
+    struct stat s;
+    char buf[PKG_PATH_MAX+1];
+    int bufp, bufe, bufi, readlen;
+
+    char srcpkg[PKG_NAME_MAX];
+    char dstpkg[PKG_NAME_MAX];
+    char srcpath[PKG_PATH_MAX];
+    char dstpath[PKG_PATH_MAX];
+    int dstuid=-1, dstgid=-1;
+    int hasspace;
+
+    d = opendir(UPDATE_COMMANDS_DIR_PREFIX);
+    if (d == NULL) {
+        goto done;
+    }
+    dfd = dirfd(d);
+
+        /* Iterate through all files in the directory, executing the
+         * file movements requested there-in.
+         */
+    while ((de = readdir(d))) {
+        const char *name = de->d_name;
+
+        if (de->d_type == DT_DIR) {
+            continue;
+        } else {
+            subfd = openat(dfd, name, O_RDONLY);
+            if (subfd < 0) {
+                ALOGW("Unable to open update commands at %s%s\n",
+                        UPDATE_COMMANDS_DIR_PREFIX, name);
+                continue;
+            }
+            
+            bufp = 0;
+            bufe = 0;
+            buf[PKG_PATH_MAX] = 0;
+            srcpkg[0] = dstpkg[0] = 0;
+            while (1) {
+                bufi = bufp;
+                while (bufi < bufe && buf[bufi] != '\n') {
+                    bufi++;
+                }
+                if (bufi < bufe) {
+                    buf[bufi] = 0;
+                    ALOGV("Processing line: %s\n", buf+bufp);
+                    hasspace = 0;
+                    while (bufp < bufi && isspace(buf[bufp])) {
+                        hasspace = 1;
+                        bufp++;
+                    }
+                    if (buf[bufp] == '#' || bufp == bufi) {
+                        // skip comments and empty lines.
+                    } else if (hasspace) {
+                        if (dstpkg[0] == 0) {
+                            ALOGW("Path before package line in %s%s: %s\n",
+                                    UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp);
+                        } else if (srcpkg[0] == 0) {
+                            // Skip -- source package no longer exists.
+                        } else {
+                            ALOGV("Move file: %s (from %s to %s)\n", buf+bufp, srcpkg, dstpkg);
+                            if (!create_move_path(srcpath, srcpkg, buf+bufp, 0) &&
+                                    !create_move_path(dstpath, dstpkg, buf+bufp, 0)) {
+                                movefileordir(srcpath, dstpath,
+                                        strlen(dstpath)-strlen(buf+bufp),
+                                        dstuid, dstgid, &s);
+                            }
+                        }
+                    } else {
+                        char* div = strchr(buf+bufp, ':');
+                        if (div == NULL) {
+                            ALOGW("Bad package spec in %s%s; no ':' sep: %s\n",
+                                    UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp);
+                        } else {
+                            *div = 0;
+                            div++;
+                            if (strlen(buf+bufp) < PKG_NAME_MAX) {
+                                strcpy(dstpkg, buf+bufp);
+                            } else {
+                                srcpkg[0] = dstpkg[0] = 0;
+                                ALOGW("Package name too long in %s%s: %s\n",
+                                        UPDATE_COMMANDS_DIR_PREFIX, name, buf+bufp);
+                            }
+                            if (strlen(div) < PKG_NAME_MAX) {
+                                strcpy(srcpkg, div);
+                            } else {
+                                srcpkg[0] = dstpkg[0] = 0;
+                                ALOGW("Package name too long in %s%s: %s\n",
+                                        UPDATE_COMMANDS_DIR_PREFIX, name, div);
+                            }
+                            if (srcpkg[0] != 0) {
+                                if (!create_pkg_path(srcpath, srcpkg, PKG_DIR_POSTFIX, 0)) {
+                                    if (lstat(srcpath, &s) < 0) {
+                                        // Package no longer exists -- skip.
+                                        srcpkg[0] = 0;
+                                    }
+                                } else {
+                                    srcpkg[0] = 0;
+                                    ALOGW("Can't create path %s in %s%s\n",
+                                            div, UPDATE_COMMANDS_DIR_PREFIX, name);
+                                }
+                                if (srcpkg[0] != 0) {
+                                    if (!create_pkg_path(dstpath, dstpkg, PKG_DIR_POSTFIX, 0)) {
+                                        if (lstat(dstpath, &s) == 0) {
+                                            dstuid = s.st_uid;
+                                            dstgid = s.st_gid;
+                                        } else {
+                                            // Destination package doesn't
+                                            // exist...  due to original-package,
+                                            // this is normal, so don't be
+                                            // noisy about it.
+                                            srcpkg[0] = 0;
+                                        }
+                                    } else {
+                                        srcpkg[0] = 0;
+                                        ALOGW("Can't create path %s in %s%s\n",
+                                                div, UPDATE_COMMANDS_DIR_PREFIX, name);
+                                    }
+                                }
+                                ALOGV("Transfering from %s to %s: uid=%d\n",
+                                    srcpkg, dstpkg, dstuid);
+                            }
+                        }
+                    }
+                    bufp = bufi+1;
+                } else {
+                    if (bufp == 0) {
+                        if (bufp < bufe) {
+                            ALOGW("Line too long in %s%s, skipping: %s\n",
+                                    UPDATE_COMMANDS_DIR_PREFIX, name, buf);
+                        }
+                    } else if (bufp < bufe) {
+                        memcpy(buf, buf+bufp, bufe-bufp);
+                        bufe -= bufp;
+                        bufp = 0;
+                    }
+                    readlen = read(subfd, buf+bufe, PKG_PATH_MAX-bufe);
+                    if (readlen < 0) {
+                        ALOGW("Failure reading update commands in %s%s: %s\n",
+                                UPDATE_COMMANDS_DIR_PREFIX, name, strerror(errno));
+                        break;
+                    } else if (readlen == 0) {
+                        break;
+                    }
+                    bufe += readlen;
+                    buf[bufe] = 0;
+                    ALOGV("Read buf: %s\n", buf);
+                }
+            }
+            close(subfd);
+        }
+    }
+    closedir(d);
+done:
+    return 0;
+}
+
+int linklib(const char* pkgname, const char* asecLibDir, int userId)
+{
+    char pkgdir[PKG_PATH_MAX];
+    char libsymlink[PKG_PATH_MAX];
+    struct stat s, libStat;
+    int rc = 0;
+
+    if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, userId)) {
+        ALOGE("cannot create package path\n");
+        return -1;
+    }
+    if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, userId)) {
+        ALOGE("cannot create package lib symlink origin path\n");
+        return -1;
+    }
+
+    if (stat(pkgdir, &s) < 0) return -1;
+
+    if (chown(pkgdir, AID_INSTALL, AID_INSTALL) < 0) {
+        ALOGE("failed to chown '%s': %s\n", pkgdir, strerror(errno));
+        return -1;
+    }
+
+    if (chmod(pkgdir, 0700) < 0) {
+        ALOGE("linklib() 1: failed to chmod '%s': %s\n", pkgdir, strerror(errno));
+        rc = -1;
+        goto out;
+    }
+
+    if (lstat(libsymlink, &libStat) < 0) {
+        if (errno != ENOENT) {
+            ALOGE("couldn't stat lib dir: %s\n", strerror(errno));
+            rc = -1;
+            goto out;
+        }
+    } else {
+        if (S_ISDIR(libStat.st_mode)) {
+            if (delete_dir_contents(libsymlink, 1, 0) < 0) {
+                rc = -1;
+                goto out;
+            }
+        } else if (S_ISLNK(libStat.st_mode)) {
+            if (unlink(libsymlink) < 0) {
+                ALOGE("couldn't unlink lib dir: %s\n", strerror(errno));
+                rc = -1;
+                goto out;
+            }
+        }
+    }
+
+    if (symlink(asecLibDir, libsymlink) < 0) {
+        ALOGE("couldn't symlink directory '%s' -> '%s': %s\n", libsymlink, asecLibDir,
+                strerror(errno));
+        rc = -errno;
+        goto out;
+    }
+
+out:
+    if (chmod(pkgdir, s.st_mode) < 0) {
+        ALOGE("linklib() 2: failed to chmod '%s': %s\n", pkgdir, strerror(errno));
+        rc = -errno;
+    }
+
+    if (chown(pkgdir, s.st_uid, s.st_gid) < 0) {
+        ALOGE("failed to chown '%s' : %s\n", pkgdir, strerror(errno));
+        return -errno;
+    }
+
+    return rc;
+}