cf51ba1360
This will allow us to conditionally change the compiler-filter based on other properties. Bug: 15165413 Change-Id: Iff27dc2904f4f0d7c25a684cd6ba16a597f252fd
1473 lines
47 KiB
C
1473 lines
47 KiB
C
/*
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** Copyright 2008, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <inttypes.h>
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#include <sys/capability.h>
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#include "installd.h"
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#include <diskusage/dirsize.h>
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#include <selinux/android.h>
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/* Directory records that are used in execution of commands. */
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dir_rec_t android_data_dir;
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dir_rec_t android_asec_dir;
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dir_rec_t android_app_dir;
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dir_rec_t android_app_private_dir;
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dir_rec_t android_app_lib_dir;
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dir_rec_t android_media_dir;
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dir_rec_array_t android_system_dirs;
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int install(const char *pkgname, uid_t uid, gid_t gid, const char *seinfo)
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{
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char pkgdir[PKG_PATH_MAX];
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char libsymlink[PKG_PATH_MAX];
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char applibdir[PKG_PATH_MAX];
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struct stat libStat;
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if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) {
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ALOGE("invalid uid/gid: %d %d\n", uid, gid);
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return -1;
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}
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if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, 0)) {
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ALOGE("cannot create package path\n");
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return -1;
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}
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if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, 0)) {
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ALOGE("cannot create package lib symlink origin path\n");
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return -1;
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}
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if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) {
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ALOGE("cannot create package lib symlink dest path\n");
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return -1;
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}
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if (mkdir(pkgdir, 0751) < 0) {
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ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno));
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return -1;
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}
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if (chmod(pkgdir, 0751) < 0) {
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ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(pkgdir);
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return -1;
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}
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if (lstat(libsymlink, &libStat) < 0) {
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if (errno != ENOENT) {
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ALOGE("couldn't stat lib dir: %s\n", strerror(errno));
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return -1;
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}
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} else {
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if (S_ISDIR(libStat.st_mode)) {
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if (delete_dir_contents(libsymlink, 1, NULL) < 0) {
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ALOGE("couldn't delete lib directory during install for: %s", libsymlink);
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return -1;
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}
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} else if (S_ISLNK(libStat.st_mode)) {
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if (unlink(libsymlink) < 0) {
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ALOGE("couldn't unlink lib directory during install for: %s", libsymlink);
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return -1;
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}
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}
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}
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if (selinux_android_setfilecon(pkgdir, pkgname, seinfo, uid) < 0) {
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ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(libsymlink);
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unlink(pkgdir);
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return -errno;
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}
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if (symlink(applibdir, libsymlink) < 0) {
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ALOGE("couldn't symlink directory '%s' -> '%s': %s\n", libsymlink, applibdir,
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strerror(errno));
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unlink(pkgdir);
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return -1;
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}
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if (chown(pkgdir, uid, gid) < 0) {
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ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(libsymlink);
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unlink(pkgdir);
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return -1;
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}
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return 0;
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}
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int uninstall(const char *pkgname, userid_t userid)
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{
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char pkgdir[PKG_PATH_MAX];
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if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, userid))
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return -1;
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remove_profile_file(pkgname);
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/* delete contents AND directory, no exceptions */
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return delete_dir_contents(pkgdir, 1, NULL);
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}
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int renamepkg(const char *oldpkgname, const char *newpkgname)
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{
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char oldpkgdir[PKG_PATH_MAX];
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char newpkgdir[PKG_PATH_MAX];
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if (create_pkg_path(oldpkgdir, oldpkgname, PKG_DIR_POSTFIX, 0))
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return -1;
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if (create_pkg_path(newpkgdir, newpkgname, PKG_DIR_POSTFIX, 0))
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return -1;
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if (rename(oldpkgdir, newpkgdir) < 0) {
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ALOGE("cannot rename dir '%s' to '%s': %s\n", oldpkgdir, newpkgdir, strerror(errno));
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return -errno;
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}
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return 0;
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}
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int fix_uid(const char *pkgname, uid_t uid, gid_t gid)
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{
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char pkgdir[PKG_PATH_MAX];
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struct stat s;
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int rc = 0;
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if ((uid < AID_SYSTEM) || (gid < AID_SYSTEM)) {
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ALOGE("invalid uid/gid: %d %d\n", uid, gid);
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return -1;
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}
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if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, 0)) {
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ALOGE("cannot create package path\n");
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return -1;
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}
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if (stat(pkgdir, &s) < 0) return -1;
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if (s.st_uid != 0 || s.st_gid != 0) {
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ALOGE("fixing uid of non-root pkg: %s %" PRIu32 " %" PRIu32 "\n", pkgdir, s.st_uid, s.st_gid);
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return -1;
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}
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if (chmod(pkgdir, 0751) < 0) {
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ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(pkgdir);
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return -errno;
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}
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if (chown(pkgdir, uid, gid) < 0) {
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ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(pkgdir);
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return -errno;
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}
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return 0;
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}
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static int lib_dir_matcher(const char* file_name, const int is_dir) {
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return is_dir && !strcmp(file_name, "lib");
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}
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int delete_user_data(const char *pkgname, userid_t userid)
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{
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char pkgdir[PKG_PATH_MAX];
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if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, userid))
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return -1;
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/* delete contents, excluding "lib", but not the directory itself */
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return delete_dir_contents(pkgdir, 0, &lib_dir_matcher);
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}
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int make_user_data(const char *pkgname, uid_t uid, userid_t userid, const char* seinfo)
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{
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char pkgdir[PKG_PATH_MAX];
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char applibdir[PKG_PATH_MAX];
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char libsymlink[PKG_PATH_MAX];
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struct stat libStat;
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// Create the data dir for the package
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if (create_pkg_path(pkgdir, pkgname, PKG_DIR_POSTFIX, userid)) {
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return -1;
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}
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if (create_pkg_path(libsymlink, pkgname, PKG_LIB_POSTFIX, userid)) {
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ALOGE("cannot create package lib symlink origin path\n");
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return -1;
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}
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if (create_pkg_path_in_dir(applibdir, &android_app_lib_dir, pkgname, PKG_DIR_POSTFIX)) {
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ALOGE("cannot create package lib symlink dest path\n");
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return -1;
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}
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if (mkdir(pkgdir, 0751) < 0) {
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ALOGE("cannot create dir '%s': %s\n", pkgdir, strerror(errno));
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return -errno;
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}
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if (chmod(pkgdir, 0751) < 0) {
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ALOGE("cannot chmod dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(pkgdir);
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return -errno;
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}
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if (lstat(libsymlink, &libStat) < 0) {
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if (errno != ENOENT) {
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ALOGE("couldn't stat lib dir for non-primary: %s\n", strerror(errno));
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unlink(pkgdir);
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return -1;
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}
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} else {
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if (S_ISDIR(libStat.st_mode)) {
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if (delete_dir_contents(libsymlink, 1, NULL) < 0) {
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ALOGE("couldn't delete lib directory during install for non-primary: %s",
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libsymlink);
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unlink(pkgdir);
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return -1;
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}
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} else if (S_ISLNK(libStat.st_mode)) {
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if (unlink(libsymlink) < 0) {
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ALOGE("couldn't unlink lib directory during install for non-primary: %s",
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libsymlink);
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unlink(pkgdir);
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return -1;
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}
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}
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}
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if (selinux_android_setfilecon(pkgdir, pkgname, seinfo, uid) < 0) {
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ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(libsymlink);
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unlink(pkgdir);
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return -errno;
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}
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if (symlink(applibdir, libsymlink) < 0) {
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ALOGE("couldn't symlink directory for non-primary '%s' -> '%s': %s\n", libsymlink,
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applibdir, strerror(errno));
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unlink(pkgdir);
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return -1;
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}
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if (chown(pkgdir, uid, uid) < 0) {
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ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
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unlink(libsymlink);
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unlink(pkgdir);
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return -errno;
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}
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return 0;
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}
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int make_user_config(userid_t userid)
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{
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if (ensure_config_user_dirs(userid) == -1) {
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return -1;
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}
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return 0;
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}
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int delete_user(userid_t userid)
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{
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int status = 0;
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char data_path[PKG_PATH_MAX];
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if ((create_user_path(data_path, userid) != 0)
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|| (delete_dir_contents(data_path, 1, NULL) != 0)) {
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status = -1;
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}
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char media_path[PATH_MAX];
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if ((create_user_media_path(media_path, userid) != 0)
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|| (delete_dir_contents(media_path, 1, NULL) != 0)) {
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status = -1;
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}
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char config_path[PATH_MAX];
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if ((create_user_config_path(config_path, userid) != 0)
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|| (delete_dir_contents(config_path, 1, NULL) != 0)) {
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status = -1;
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}
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return status;
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}
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int delete_cache(const char *pkgname, userid_t userid)
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{
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char cachedir[PKG_PATH_MAX];
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if (create_pkg_path(cachedir, pkgname, CACHE_DIR_POSTFIX, userid))
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return -1;
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/* delete contents, not the directory, no exceptions */
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return delete_dir_contents(cachedir, 0, NULL);
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}
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/* Try to ensure free_size bytes of storage are available.
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* Returns 0 on success.
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* This is rather simple-minded because doing a full LRU would
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* be potentially memory-intensive, and without atime it would
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* also require that apps constantly modify file metadata even
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* when just reading from the cache, which is pretty awful.
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*/
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int free_cache(int64_t free_size)
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{
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cache_t* cache;
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int64_t avail;
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DIR *d;
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struct dirent *de;
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char tmpdir[PATH_MAX];
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char *dirpos;
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avail = data_disk_free();
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if (avail < 0) return -1;
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ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", free_size, avail);
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if (avail >= free_size) return 0;
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cache = start_cache_collection();
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// Collect cache files for primary user.
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if (create_user_path(tmpdir, 0) == 0) {
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//ALOGI("adding cache files from %s\n", tmpdir);
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add_cache_files(cache, tmpdir, "cache");
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}
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// Search for other users and add any cache files from them.
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snprintf(tmpdir, sizeof(tmpdir), "%s%s", android_data_dir.path,
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SECONDARY_USER_PREFIX);
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dirpos = tmpdir + strlen(tmpdir);
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d = opendir(tmpdir);
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if (d != NULL) {
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while ((de = readdir(d))) {
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if (de->d_type == DT_DIR) {
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const char *name = de->d_name;
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/* always skip "." and ".." */
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if (name[0] == '.') {
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if (name[1] == 0) continue;
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if ((name[1] == '.') && (name[2] == 0)) continue;
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}
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if ((strlen(name)+(dirpos-tmpdir)) < (sizeof(tmpdir)-1)) {
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strcpy(dirpos, name);
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//ALOGI("adding cache files from %s\n", tmpdir);
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add_cache_files(cache, tmpdir, "cache");
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} else {
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ALOGW("Path exceeds limit: %s%s", tmpdir, name);
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}
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}
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}
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closedir(d);
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}
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// Collect cache files on external storage for all users (if it is mounted as part
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// of the internal storage).
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strcpy(tmpdir, android_media_dir.path);
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dirpos = tmpdir + strlen(tmpdir);
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d = opendir(tmpdir);
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if (d != NULL) {
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while ((de = readdir(d))) {
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if (de->d_type == DT_DIR) {
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const char *name = de->d_name;
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/* skip any dir that doesn't start with a number, so not a user */
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if (name[0] < '0' || name[0] > '9') {
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continue;
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}
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if ((strlen(name)+(dirpos-tmpdir)) < (sizeof(tmpdir)-1)) {
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strcpy(dirpos, name);
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if (lookup_media_dir(tmpdir, "Android") == 0
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&& lookup_media_dir(tmpdir, "data") == 0) {
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//ALOGI("adding cache files from %s\n", tmpdir);
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add_cache_files(cache, tmpdir, "cache");
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}
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} else {
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ALOGW("Path exceeds limit: %s%s", tmpdir, name);
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}
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}
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}
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closedir(d);
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}
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clear_cache_files(cache, free_size);
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finish_cache_collection(cache);
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return data_disk_free() >= free_size ? 0 : -1;
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}
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int move_dex(const char *src, const char *dst, const char *instruction_set)
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{
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char src_dex[PKG_PATH_MAX];
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char dst_dex[PKG_PATH_MAX];
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if (validate_apk_path(src)) return -1;
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if (validate_apk_path(dst)) return -1;
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if (create_cache_path(src_dex, src, instruction_set)) return -1;
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if (create_cache_path(dst_dex, dst, instruction_set)) return -1;
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ALOGV("move %s -> %s\n", src_dex, dst_dex);
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if (rename(src_dex, dst_dex) < 0) {
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ALOGE("Couldn't move %s: %s\n", src_dex, strerror(errno));
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return -1;
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} else {
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return 0;
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}
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}
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int rm_dex(const char *path, const char *instruction_set)
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{
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char dex_path[PKG_PATH_MAX];
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if (validate_apk_path(path)) return -1;
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if (create_cache_path(dex_path, path, instruction_set)) return -1;
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ALOGV("unlink %s\n", dex_path);
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if (unlink(dex_path) < 0) {
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ALOGE("Couldn't unlink %s: %s\n", dex_path, strerror(errno));
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return -1;
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} else {
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return 0;
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}
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}
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int get_size(const char *pkgname, userid_t userid, const char *apkpath,
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const char *libdirpath, const char *fwdlock_apkpath, const char *asecpath,
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const char *instruction_set, int64_t *_codesize, int64_t *_datasize,
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int64_t *_cachesize, int64_t* _asecsize)
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{
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DIR *d;
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int dfd;
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struct dirent *de;
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struct stat s;
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char path[PKG_PATH_MAX];
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int64_t codesize = 0;
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int64_t datasize = 0;
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int64_t cachesize = 0;
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int64_t asecsize = 0;
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/* count the source apk as code -- but only if it's not
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* on the /system partition and its not on the sdcard.
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*/
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if (validate_system_app_path(apkpath) &&
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strncmp(apkpath, android_asec_dir.path, android_asec_dir.len) != 0) {
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if (stat(apkpath, &s) == 0) {
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codesize += stat_size(&s);
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}
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}
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/* count the forward locked apk as code if it is given
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*/
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if (fwdlock_apkpath != NULL && fwdlock_apkpath[0] != '!') {
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if (stat(fwdlock_apkpath, &s) == 0) {
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codesize += stat_size(&s);
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}
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}
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/* count the cached dexfile as code */
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if (!create_cache_path(path, apkpath, instruction_set)) {
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if (stat(path, &s) == 0) {
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codesize += stat_size(&s);
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}
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}
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/* add in size of any libraries */
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if (libdirpath != NULL && libdirpath[0] != '!') {
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d = opendir(libdirpath);
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if (d != NULL) {
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dfd = dirfd(d);
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codesize += calculate_dir_size(dfd);
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closedir(d);
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}
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}
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|
|
/* 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, userid)) {
|
|
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;
|
|
}
|
|
|
|
|
|
int create_cache_path(char path[PKG_PATH_MAX], const char *src, const char *instruction_set)
|
|
{
|
|
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(instruction_set) +
|
|
strlen(DALVIK_CACHE_POSTFIX) + 2;
|
|
|
|
if (dstlen > PKG_PATH_MAX) {
|
|
return -1;
|
|
}
|
|
|
|
sprintf(path,"%s%s/%s%s",
|
|
DALVIK_CACHE_PREFIX,
|
|
instruction_set,
|
|
src + 1, /* skip the leading / */
|
|
DALVIK_CACHE_POSTFIX);
|
|
|
|
for(tmp = path + strlen(DALVIK_CACHE_PREFIX) + strlen(instruction_set) + 1; *tmp; tmp++) {
|
|
if (*tmp == '/') {
|
|
*tmp = '@';
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void run_dexopt(int zip_fd, int odex_fd, const char* input_file_name,
|
|
const char* output_file_name)
|
|
{
|
|
/* platform-specific flags affecting optimization and verification */
|
|
char dexopt_flags[PROPERTY_VALUE_MAX];
|
|
property_get("dalvik.vm.dexopt-flags", dexopt_flags, "");
|
|
ALOGV("dalvik.vm.dexopt-flags=%s\n", 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);
|
|
|
|
ALOGV("Running %s in=%s out=%s\n", DEX_OPT_BIN, input_file_name, output_file_name);
|
|
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 void run_dex2oat(int zip_fd, int oat_fd, const char* input_file_name,
|
|
const char* output_file_name, const char *pkgname, const char *instruction_set)
|
|
{
|
|
char prop_buf[PROPERTY_VALUE_MAX];
|
|
bool profiler = (property_get("dalvik.vm.profiler", prop_buf, "0") > 0) && (prop_buf[0] == '1');
|
|
|
|
char dex2oat_Xms_flag[PROPERTY_VALUE_MAX];
|
|
bool have_dex2oat_Xms_flag = property_get("dalvik.vm.dex2oat-Xms", dex2oat_Xms_flag, NULL) > 0;
|
|
|
|
char dex2oat_Xmx_flag[PROPERTY_VALUE_MAX];
|
|
bool have_dex2oat_Xmx_flag = property_get("dalvik.vm.dex2oat-Xmx", dex2oat_Xmx_flag, NULL) > 0;
|
|
|
|
char dex2oat_compiler_filter_flag[PROPERTY_VALUE_MAX];
|
|
bool have_dex2oat_compiler_filter_flag = property_get("dalvik.vm.dex2oat-filter",
|
|
dex2oat_compiler_filter_flag, NULL) > 0;
|
|
|
|
char dex2oat_flags[PROPERTY_VALUE_MAX];
|
|
bool have_dex2oat_flags = property_get("dalvik.vm.dex2oat-flags", dex2oat_flags, NULL) > 0;
|
|
ALOGV("dalvik.vm.dex2oat-flags=%s\n", dex2oat_flags);
|
|
|
|
static const char* DEX2OAT_BIN = "/system/bin/dex2oat";
|
|
|
|
static const char* RUNTIME_ARG = "--runtime-arg";
|
|
|
|
static const int MAX_INT_LEN = 12; // '-'+10dig+'\0' -OR- 0x+8dig
|
|
static const unsigned int MAX_INSTRUCTION_SET_LEN = 32;
|
|
|
|
if (strlen(instruction_set) >= MAX_INSTRUCTION_SET_LEN) {
|
|
ALOGE("Instruction set %s longer than max length of %d",
|
|
instruction_set, MAX_INSTRUCTION_SET_LEN);
|
|
return;
|
|
}
|
|
|
|
char zip_fd_arg[strlen("--zip-fd=") + MAX_INT_LEN];
|
|
char zip_location_arg[strlen("--zip-location=") + PKG_PATH_MAX];
|
|
char oat_fd_arg[strlen("--oat-fd=") + MAX_INT_LEN];
|
|
char oat_location_arg[strlen("--oat-location=") + PKG_PATH_MAX];
|
|
char instruction_set_arg[strlen("--instruction-set=") + MAX_INSTRUCTION_SET_LEN];
|
|
char profile_file_arg[strlen("--profile-file=") + PKG_PATH_MAX];
|
|
char top_k_profile_threshold_arg[strlen("--top-k-profile-threshold=") + PROPERTY_VALUE_MAX];
|
|
char dex2oat_Xms_arg[strlen("-Xms") + PROPERTY_VALUE_MAX];
|
|
char dex2oat_Xmx_arg[strlen("-Xmx") + PROPERTY_VALUE_MAX];
|
|
char dex2oat_compiler_filter_arg[strlen("--compiler-filter=") + PROPERTY_VALUE_MAX];
|
|
|
|
sprintf(zip_fd_arg, "--zip-fd=%d", zip_fd);
|
|
sprintf(zip_location_arg, "--zip-location=%s", input_file_name);
|
|
sprintf(oat_fd_arg, "--oat-fd=%d", oat_fd);
|
|
sprintf(oat_location_arg, "--oat-location=%s", output_file_name);
|
|
sprintf(instruction_set_arg, "--instruction-set=%s", instruction_set);
|
|
|
|
bool have_profile_file = false;
|
|
bool have_top_k_profile_threshold = false;
|
|
if (profiler && (strcmp(pkgname, "*") != 0)) {
|
|
char profile_file[PKG_PATH_MAX];
|
|
snprintf(profile_file, sizeof(profile_file), "%s/%s",
|
|
DALVIK_CACHE_PREFIX "profiles", pkgname);
|
|
struct stat st;
|
|
if ((stat(profile_file, &st) == 0) && (st.st_size > 0)) {
|
|
sprintf(profile_file_arg, "--profile-file=%s", profile_file);
|
|
have_profile_file = true;
|
|
if (property_get("dalvik.vm.profile.top-k-thr", prop_buf, NULL) > 0) {
|
|
snprintf(top_k_profile_threshold_arg, sizeof(top_k_profile_threshold_arg),
|
|
"--top-k-profile-threshold=%s", prop_buf);
|
|
have_top_k_profile_threshold = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (have_dex2oat_Xms_flag) {
|
|
sprintf(dex2oat_Xms_arg, "-Xms%s", dex2oat_Xms_flag);
|
|
}
|
|
if (have_dex2oat_Xmx_flag) {
|
|
sprintf(dex2oat_Xmx_arg, "-Xmx%s", dex2oat_Xmx_flag);
|
|
}
|
|
if (have_dex2oat_compiler_filter_flag) {
|
|
sprintf(dex2oat_compiler_filter_arg, "--compiler-filter=%s", dex2oat_compiler_filter_flag);
|
|
}
|
|
|
|
ALOGV("Running %s in=%s out=%s\n", DEX2OAT_BIN, input_file_name, output_file_name);
|
|
|
|
char* argv[7 // program name, mandatory arguments and the final NULL
|
|
+ (have_profile_file ? 1 : 0)
|
|
+ (have_top_k_profile_threshold ? 1 : 0)
|
|
+ (have_dex2oat_Xms_flag ? 2 : 0)
|
|
+ (have_dex2oat_Xmx_flag ? 2 : 0)
|
|
+ (have_dex2oat_compiler_filter_flag ? 1 : 0)
|
|
+ (have_dex2oat_flags ? 1 : 0)];
|
|
int i = 0;
|
|
argv[i++] = (char*)DEX2OAT_BIN;
|
|
argv[i++] = zip_fd_arg;
|
|
argv[i++] = zip_location_arg;
|
|
argv[i++] = oat_fd_arg;
|
|
argv[i++] = oat_location_arg;
|
|
argv[i++] = instruction_set_arg;
|
|
if (have_profile_file) {
|
|
argv[i++] = profile_file_arg;
|
|
}
|
|
if (have_top_k_profile_threshold) {
|
|
argv[i++] = top_k_profile_threshold_arg;
|
|
}
|
|
if (have_dex2oat_Xms_flag) {
|
|
argv[i++] = (char*)RUNTIME_ARG;
|
|
argv[i++] = dex2oat_Xms_arg;
|
|
}
|
|
if (have_dex2oat_Xmx_flag) {
|
|
argv[i++] = (char*)RUNTIME_ARG;
|
|
argv[i++] = dex2oat_Xmx_arg;
|
|
}
|
|
if (have_dex2oat_compiler_filter_flag) {
|
|
argv[i++] = dex2oat_compiler_filter_arg;
|
|
}
|
|
if (have_dex2oat_flags) {
|
|
argv[i++] = dex2oat_flags;
|
|
}
|
|
// Do not add after dex2oat_flags, they should override others for debugging.
|
|
argv[i] = NULL;
|
|
|
|
execv(DEX2OAT_BIN, (char* const *)argv);
|
|
ALOGE("execl(%s) failed: %s\n", DEX2OAT_BIN, strerror(errno));
|
|
}
|
|
|
|
static int wait_child(pid_t pid)
|
|
{
|
|
int status;
|
|
pid_t got_pid;
|
|
|
|
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) {
|
|
return 0;
|
|
} else {
|
|
return status; /* always nonzero */
|
|
}
|
|
}
|
|
|
|
int dexopt(const char *apk_path, uid_t uid, int is_public,
|
|
const char *pkgname, const char *instruction_set)
|
|
{
|
|
struct utimbuf ut;
|
|
struct stat apk_stat, dex_stat;
|
|
char out_path[PKG_PATH_MAX];
|
|
char persist_sys_dalvik_vm_lib[PROPERTY_VALUE_MAX];
|
|
char *end;
|
|
int res, zip_fd=-1, out_fd=-1;
|
|
|
|
if (strlen(apk_path) >= (PKG_PATH_MAX - 8)) {
|
|
return -1;
|
|
}
|
|
|
|
/* The command to run depend on the value of persist.sys.dalvik.vm.lib */
|
|
property_get("persist.sys.dalvik.vm.lib.2", persist_sys_dalvik_vm_lib, "libart.so");
|
|
|
|
/* Before anything else: is there a .odex file? If so, we have
|
|
* precompiled the apk and there is nothing to do here.
|
|
*/
|
|
strcpy(out_path, apk_path);
|
|
end = strrchr(out_path, '.');
|
|
if (end != NULL) {
|
|
strcpy(end, ".odex");
|
|
if (stat(out_path, &dex_stat) == 0) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (create_cache_path(out_path, apk_path, instruction_set)) {
|
|
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("installd cannot open '%s' for input during dexopt\n", apk_path);
|
|
return -1;
|
|
}
|
|
|
|
unlink(out_path);
|
|
out_fd = open(out_path, O_RDWR | O_CREAT | O_EXCL, 0644);
|
|
if (out_fd < 0) {
|
|
ALOGE("installd cannot open '%s' for output during dexopt\n", out_path);
|
|
goto fail;
|
|
}
|
|
if (fchmod(out_fd,
|
|
S_IRUSR|S_IWUSR|S_IRGRP |
|
|
(is_public ? S_IROTH : 0)) < 0) {
|
|
ALOGE("installd cannot chmod '%s' during dexopt\n", out_path);
|
|
goto fail;
|
|
}
|
|
if (fchown(out_fd, AID_SYSTEM, uid) < 0) {
|
|
ALOGE("installd cannot chown '%s' during dexopt\n", out_path);
|
|
goto fail;
|
|
}
|
|
|
|
// Create profile file if there is a package name present.
|
|
if (strcmp(pkgname, "*") != 0) {
|
|
create_profile_file(pkgname, uid);
|
|
}
|
|
|
|
|
|
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 in installd during dexopt\n", uid);
|
|
exit(64);
|
|
}
|
|
if (setuid(uid) != 0) {
|
|
ALOGE("setuid(%d) failed in installd 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(out_fd, LOCK_EX | LOCK_NB) != 0) {
|
|
ALOGE("flock(%s) failed: %s\n", out_path, strerror(errno));
|
|
exit(67);
|
|
}
|
|
|
|
if (strncmp(persist_sys_dalvik_vm_lib, "libdvm", 6) == 0) {
|
|
run_dexopt(zip_fd, out_fd, apk_path, out_path);
|
|
} else if (strncmp(persist_sys_dalvik_vm_lib, "libart", 6) == 0) {
|
|
run_dex2oat(zip_fd, out_fd, apk_path, out_path, pkgname, instruction_set);
|
|
} else {
|
|
exit(69); /* Unexpected persist.sys.dalvik.vm.lib value */
|
|
}
|
|
exit(68); /* only get here on exec failure */
|
|
} else {
|
|
res = wait_child(pid);
|
|
if (res == 0) {
|
|
ALOGV("DexInv: --- END '%s' (success) ---\n", apk_path);
|
|
} else {
|
|
ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", apk_path, res);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
ut.actime = apk_stat.st_atime;
|
|
ut.modtime = apk_stat.st_mtime;
|
|
utime(out_path, &ut);
|
|
|
|
close(out_fd);
|
|
close(zip_fd);
|
|
return 0;
|
|
|
|
fail:
|
|
if (out_fd >= 0) {
|
|
close(out_fd);
|
|
unlink(out_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, NULL) < 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;
|
|
}
|
|
|
|
static void run_idmap(const char *target_apk, const char *overlay_apk, int idmap_fd)
|
|
{
|
|
static const char *IDMAP_BIN = "/system/bin/idmap";
|
|
static const size_t MAX_INT_LEN = 32;
|
|
char idmap_str[MAX_INT_LEN];
|
|
|
|
snprintf(idmap_str, sizeof(idmap_str), "%d", idmap_fd);
|
|
|
|
execl(IDMAP_BIN, IDMAP_BIN, "--fd", target_apk, overlay_apk, idmap_str, (char*)NULL);
|
|
ALOGE("execl(%s) failed: %s\n", IDMAP_BIN, strerror(errno));
|
|
}
|
|
|
|
// Transform string /a/b/c.apk to (prefix)/a@b@c.apk@(suffix)
|
|
// eg /a/b/c.apk to /data/resource-cache/a@b@c.apk@idmap
|
|
static int flatten_path(const char *prefix, const char *suffix,
|
|
const char *overlay_path, char *idmap_path, size_t N)
|
|
{
|
|
if (overlay_path == NULL || idmap_path == NULL) {
|
|
return -1;
|
|
}
|
|
const size_t len_overlay_path = strlen(overlay_path);
|
|
// will access overlay_path + 1 further below; requires absolute path
|
|
if (len_overlay_path < 2 || *overlay_path != '/') {
|
|
return -1;
|
|
}
|
|
const size_t len_idmap_root = strlen(prefix);
|
|
const size_t len_suffix = strlen(suffix);
|
|
if (SIZE_MAX - len_idmap_root < len_overlay_path ||
|
|
SIZE_MAX - (len_idmap_root + len_overlay_path) < len_suffix) {
|
|
// additions below would cause overflow
|
|
return -1;
|
|
}
|
|
if (N < len_idmap_root + len_overlay_path + len_suffix) {
|
|
return -1;
|
|
}
|
|
memset(idmap_path, 0, N);
|
|
snprintf(idmap_path, N, "%s%s%s", prefix, overlay_path + 1, suffix);
|
|
char *ch = idmap_path + len_idmap_root;
|
|
while (*ch != '\0') {
|
|
if (*ch == '/') {
|
|
*ch = '@';
|
|
}
|
|
++ch;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int idmap(const char *target_apk, const char *overlay_apk, uid_t uid)
|
|
{
|
|
ALOGV("idmap target_apk=%s overlay_apk=%s uid=%d\n", target_apk, overlay_apk, uid);
|
|
|
|
int idmap_fd = -1;
|
|
char idmap_path[PATH_MAX];
|
|
|
|
if (flatten_path(IDMAP_PREFIX, IDMAP_SUFFIX, overlay_apk,
|
|
idmap_path, sizeof(idmap_path)) == -1) {
|
|
ALOGE("idmap cannot generate idmap path for overlay %s\n", overlay_apk);
|
|
goto fail;
|
|
}
|
|
|
|
unlink(idmap_path);
|
|
idmap_fd = open(idmap_path, O_RDWR | O_CREAT | O_EXCL, 0644);
|
|
if (idmap_fd < 0) {
|
|
ALOGE("idmap cannot open '%s' for output: %s\n", idmap_path, strerror(errno));
|
|
goto fail;
|
|
}
|
|
if (fchown(idmap_fd, AID_SYSTEM, uid) < 0) {
|
|
ALOGE("idmap cannot chown '%s'\n", idmap_path);
|
|
goto fail;
|
|
}
|
|
if (fchmod(idmap_fd, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH) < 0) {
|
|
ALOGE("idmap cannot chmod '%s'\n", idmap_path);
|
|
goto fail;
|
|
}
|
|
|
|
pid_t pid;
|
|
pid = fork();
|
|
if (pid == 0) {
|
|
/* child -- drop privileges before continuing */
|
|
if (setgid(uid) != 0) {
|
|
ALOGE("setgid(%d) failed during idmap\n", uid);
|
|
exit(1);
|
|
}
|
|
if (setuid(uid) != 0) {
|
|
ALOGE("setuid(%d) failed during idmap\n", uid);
|
|
exit(1);
|
|
}
|
|
if (flock(idmap_fd, LOCK_EX | LOCK_NB) != 0) {
|
|
ALOGE("flock(%s) failed during idmap: %s\n", idmap_path, strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
run_idmap(target_apk, overlay_apk, idmap_fd);
|
|
exit(1); /* only if exec call to idmap failed */
|
|
} else {
|
|
int status = wait_child(pid);
|
|
if (status != 0) {
|
|
ALOGE("idmap failed, status=0x%04x\n", status);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
close(idmap_fd);
|
|
return 0;
|
|
fail:
|
|
if (idmap_fd >= 0) {
|
|
close(idmap_fd);
|
|
unlink(idmap_path);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int restorecon_data(const char* pkgName, const char* seinfo, uid_t uid)
|
|
{
|
|
struct dirent *entry;
|
|
DIR *d;
|
|
struct stat s;
|
|
char *userdir;
|
|
char *primarydir;
|
|
char *pkgdir;
|
|
int ret = 0;
|
|
|
|
// SELINUX_ANDROID_RESTORECON_DATADATA flag is set by libselinux. Not needed here.
|
|
unsigned int flags = SELINUX_ANDROID_RESTORECON_RECURSE;
|
|
|
|
if (!pkgName || !seinfo) {
|
|
ALOGE("Package name or seinfo tag is null when trying to restorecon.");
|
|
return -1;
|
|
}
|
|
|
|
if (asprintf(&primarydir, "%s%s%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgName) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
// Relabel for primary user.
|
|
if (selinux_android_restorecon_pkgdir(primarydir, seinfo, uid, flags) < 0) {
|
|
ALOGE("restorecon failed for %s: %s\n", primarydir, strerror(errno));
|
|
ret |= -1;
|
|
}
|
|
|
|
if (asprintf(&userdir, "%s%s", android_data_dir.path, SECONDARY_USER_PREFIX) < 0) {
|
|
free(primarydir);
|
|
return -1;
|
|
}
|
|
|
|
// Relabel package directory for all secondary users.
|
|
d = opendir(userdir);
|
|
if (d == NULL) {
|
|
free(primarydir);
|
|
free(userdir);
|
|
return -1;
|
|
}
|
|
|
|
while ((entry = readdir(d))) {
|
|
if (entry->d_type != DT_DIR) {
|
|
continue;
|
|
}
|
|
|
|
const char *user = entry->d_name;
|
|
// Ignore "." and ".."
|
|
if (!strcmp(user, ".") || !strcmp(user, "..")) {
|
|
continue;
|
|
}
|
|
|
|
// user directories start with a number
|
|
if (user[0] < '0' || user[0] > '9') {
|
|
ALOGE("Expecting numbered directory during restorecon. Instead got '%s'.", user);
|
|
continue;
|
|
}
|
|
|
|
if (asprintf(&pkgdir, "%s%s/%s", userdir, user, pkgName) < 0) {
|
|
continue;
|
|
}
|
|
|
|
if (stat(pkgdir, &s) < 0) {
|
|
free(pkgdir);
|
|
continue;
|
|
}
|
|
|
|
if (selinux_android_restorecon_pkgdir(pkgdir, seinfo, uid, flags) < 0) {
|
|
ALOGE("restorecon failed for %s: %s\n", pkgdir, strerror(errno));
|
|
ret |= -1;
|
|
}
|
|
free(pkgdir);
|
|
}
|
|
|
|
closedir(d);
|
|
free(primarydir);
|
|
free(userdir);
|
|
return ret;
|
|
}
|
|
|
|
static int prune_dex_exclusion_predicate(const char *file_name, const int is_dir)
|
|
{
|
|
// Exclude all directories. The top level command will be
|
|
// given a list of ISA specific directories that are assumed
|
|
// to be flat.
|
|
if (is_dir) {
|
|
return 1;
|
|
}
|
|
|
|
|
|
// Don't exclude regular files that start with the list
|
|
// of prefixes.
|
|
static const char data_app_prefix[] = "data@app@";
|
|
static const char data_priv_app_prefix[] = "data@priv-app@";
|
|
if (!strncmp(file_name, data_app_prefix, sizeof(data_app_prefix) - 1) ||
|
|
!strncmp(file_name, data_priv_app_prefix, sizeof(data_priv_app_prefix) - 1)) {
|
|
return 0;
|
|
}
|
|
|
|
// Exclude all regular files that don't start with the prefix "data@app@" or
|
|
// "data@priv-app@".
|
|
return 1;
|
|
}
|
|
|
|
int prune_dex_cache(const char* subdir) {
|
|
// "." is handled as a special case, and refers to
|
|
// DALVIK_CACHE_PREFIX (usually /data/dalvik-cache).
|
|
const bool is_dalvik_cache_root = !strcmp(subdir, ".");
|
|
|
|
// Don't allow the path to contain "." or ".." except for the
|
|
// special case above. This is much stricter than we need to be,
|
|
// but there's no good reason to support them.
|
|
if (strchr(subdir, '.' ) != NULL && !is_dalvik_cache_root) {
|
|
return -1;
|
|
}
|
|
|
|
if (!is_dalvik_cache_root) {
|
|
char full_path[PKG_PATH_MAX];
|
|
snprintf(full_path, sizeof(full_path), "%s%s", DALVIK_CACHE_PREFIX, subdir);
|
|
return delete_dir_contents(full_path, 0, &prune_dex_exclusion_predicate);
|
|
}
|
|
|
|
|
|
// When subdir == ".", clean the contents of the top level
|
|
// dalvik-cache directory.
|
|
return delete_dir_contents(DALVIK_CACHE_PREFIX, 0, &prune_dex_exclusion_predicate);
|
|
}
|