d845c96128
Given a pair of absolute paths {from_path, to_path} , check that
they are both valid apk subpaths (eg. /data/app/package/foo) and
link(2) to_path to from_path. This is required by staged installs,
where we link existing apks and oat files to their staging location.
bug: 20889739
Change-Id: I3b5e3b43677af68be59308121a4409caaa6a72f0
259 lines
8.6 KiB
C++
259 lines
8.6 KiB
C++
/*
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**
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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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#define LOG_TAG "installd"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <inttypes.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <utime.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <string>
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#include <vector>
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#include <cutils/fs.h>
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#include <cutils/sockets.h>
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#include <cutils/log.h>
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#include <cutils/properties.h>
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#include <cutils/multiuser.h>
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#include <private/android_filesystem_config.h>
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#if defined(__APPLE__)
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#include <sys/mount.h>
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#else
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#include <sys/statfs.h>
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#endif
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#define SOCKET_PATH "installd"
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/* elements combined with a valid package name to form paths */
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#define PRIMARY_USER_PREFIX "data/"
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#define SECONDARY_USER_PREFIX "user/"
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#define PKG_DIR_POSTFIX ""
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#define PKG_LIB_POSTFIX "/lib"
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#define CACHE_DIR_POSTFIX "/cache"
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#define CODE_CACHE_DIR_POSTFIX "/code_cache"
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#define APP_SUBDIR "app/" // sub-directory under ANDROID_DATA
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#define PRIV_APP_SUBDIR "priv-app/" // sub-directory under ANDROID_DATA
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#define APP_LIB_SUBDIR "app-lib/" // sub-directory under ANDROID_DATA
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#define MEDIA_SUBDIR "media/" // sub-directory under ANDROID_DATA
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/* other handy constants */
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#define PRIVATE_APP_SUBDIR "app-private/" // sub-directory under ANDROID_DATA
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#define DALVIK_CACHE_PREFIX "/data/dalvik-cache/"
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#define DALVIK_CACHE_POSTFIX "/classes.dex"
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#define UPDATE_COMMANDS_DIR_PREFIX "/system/etc/updatecmds/"
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#define IDMAP_PREFIX "/data/resource-cache/"
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#define IDMAP_SUFFIX "@idmap"
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#define PKG_NAME_MAX 128 /* largest allowed package name */
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#define PKG_PATH_MAX 256 /* max size of any path we use */
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/* dexopt needed flags matching those in dalvik.system.DexFile */
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#define DEXOPT_DEX2OAT_NEEDED 1
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#define DEXOPT_PATCHOAT_NEEDED 2
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#define DEXOPT_SELF_PATCHOAT_NEEDED 3
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
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/* data structures */
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typedef struct {
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char* path;
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size_t len;
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} dir_rec_t;
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typedef struct {
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size_t count;
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dir_rec_t* dirs;
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} dir_rec_array_t;
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extern dir_rec_t android_app_dir;
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extern dir_rec_t android_app_private_dir;
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extern dir_rec_t android_app_lib_dir;
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extern dir_rec_t android_data_dir;
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extern dir_rec_t android_asec_dir;
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extern dir_rec_t android_media_dir;
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extern dir_rec_t android_mnt_expand_dir;
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extern dir_rec_array_t android_system_dirs;
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typedef struct cache_dir_struct {
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struct cache_dir_struct* parent;
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int32_t childCount;
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int32_t hiddenCount;
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int32_t deleted;
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char name[];
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} cache_dir_t;
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typedef struct {
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cache_dir_t* dir;
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time_t modTime;
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char name[];
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} cache_file_t;
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typedef struct {
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size_t numDirs;
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size_t availDirs;
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cache_dir_t** dirs;
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size_t numFiles;
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size_t availFiles;
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cache_file_t** files;
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size_t numCollected;
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void* memBlocks;
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int8_t* curMemBlockAvail;
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int8_t* curMemBlockEnd;
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} cache_t;
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/* util.c */
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int create_pkg_path(char path[PKG_PATH_MAX],
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const char *pkgname,
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const char *postfix,
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userid_t userid);
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std::string create_data_path(const char* volume_uuid);
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std::string create_data_app_path(const char* volume_uuid);
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std::string create_data_app_package_path(const char* volume_uuid, const char* package_name);
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std::string create_data_user_path(const char* volume_uuid, userid_t userid);
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std::string create_data_user_package_path(const char* volume_uuid,
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userid_t user, const char* package_name);
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std::string create_data_media_path(const char* volume_uuid, userid_t userid);
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std::vector<userid_t> get_known_users(const char* volume_uuid);
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int create_user_config_path(char path[PKG_PATH_MAX], userid_t userid);
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int create_move_path(char path[PKG_PATH_MAX],
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const char* pkgname,
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const char* leaf,
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userid_t userid);
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int is_valid_package_name(const char* pkgname);
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int create_cache_path(char path[PKG_PATH_MAX], const char *src,
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const char *instruction_set);
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int delete_dir_contents(const char *pathname,
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int also_delete_dir,
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int (*exclusion_predicate)(const char *name, const int is_dir));
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int delete_dir_contents_fd(int dfd, const char *name);
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int copy_dir_files(const char *srcname, const char *dstname, uid_t owner, gid_t group);
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int lookup_media_dir(char basepath[PATH_MAX], const char *dir);
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int64_t data_disk_free(const std::string& data_path);
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cache_t* start_cache_collection();
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void add_cache_files(cache_t* cache, const char *basepath, const char *cachedir);
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void clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size);
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void finish_cache_collection(cache_t* cache);
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int validate_system_app_path(const char* path);
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int get_path_from_env(dir_rec_t* rec, const char* var);
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int get_path_from_string(dir_rec_t* rec, const char* path);
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int copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix);
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int validate_apk_path(const char *path);
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int validate_apk_path_subdirs(const char *path);
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int append_and_increment(char** dst, const char* src, size_t* dst_size);
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char *build_string2(const char *s1, const char *s2);
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char *build_string3(const char *s1, const char *s2, const char *s3);
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int ensure_dir(const char* path, mode_t mode, uid_t uid, gid_t gid);
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int ensure_media_user_dirs(const char* uuid, userid_t userid);
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int ensure_config_user_dirs(userid_t userid);
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int create_profile_file(const char *pkgname, gid_t gid);
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void remove_profile_file(const char *pkgname);
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/* commands.c */
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int install(const char *uuid, const char *pkgname, uid_t uid, gid_t gid, const char *seinfo);
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int uninstall(const char *uuid, const char *pkgname, userid_t userid);
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int renamepkg(const char *oldpkgname, const char *newpkgname);
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int fix_uid(const char *uuid, const char *pkgname, uid_t uid, gid_t gid);
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int delete_user_data(const char *uuid, const char *pkgname, userid_t userid);
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int make_user_data(const char *uuid, const char *pkgname, uid_t uid,
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userid_t userid, const char* seinfo);
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int move_complete_app(const char* from_uuid, const char *to_uuid,
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const char *package_name, const char *data_app_name, appid_t appid,
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const char* seinfo);
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int make_user_config(userid_t userid);
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int delete_user(const char *uuid, userid_t userid);
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int delete_cache(const char *uuid, const char *pkgname, userid_t userid);
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int delete_code_cache(const char *uuid, const char *pkgname, userid_t userid);
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int move_dex(const char *src, const char *dst, const char *instruction_set);
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int rm_dex(const char *path, const char *instruction_set);
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int protect(char *pkgname, gid_t gid);
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int get_size(const char *uuid, const char *pkgname, int userid,
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const char *apkpath, const char *libdirpath,
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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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int free_cache(const char *uuid, int64_t free_size);
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int dexopt(const char *apk_path, uid_t uid, bool is_public, const char *pkgName,
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const char *instruction_set, int dexopt_needed, bool vm_safe_mode,
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bool debuggable, const char* oat_dir);
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int mark_boot_complete(const char *instruction_set);
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int movefiles();
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int linklib(const char* uuid, const char* pkgname, const char* asecLibDir, int userId);
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int idmap(const char *target_path, const char *overlay_path, uid_t uid);
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int restorecon_data(const char *uuid, const char* pkgName, const char* seinfo, uid_t uid);
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int create_oat_dir(const char* oat_dir, const char *instruction_set);
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int rm_package_dir(const char* apk_path);
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int calculate_oat_file_path(char path[PKG_PATH_MAX], const char *oat_dir, const char *apk_path,
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const char *instruction_set);
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int move_package_dir(char path[PKG_PATH_MAX], const char *oat_dir, const char *apk_path,
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const char *instruction_set);
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int link_file(const char *relative_path, const char *from_base, const char *to_base);
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