1/* 2** 3** Copyright 2008, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#define LOG_TAG "installd" 19 20#include <stdio.h> 21#include <stdlib.h> 22#include <stdint.h> 23#include <inttypes.h> 24#include <sys/stat.h> 25#include <dirent.h> 26#include <unistd.h> 27#include <ctype.h> 28#include <fcntl.h> 29#include <errno.h> 30#include <utime.h> 31#include <sys/socket.h> 32#include <sys/types.h> 33#include <sys/wait.h> 34 35#include <cutils/fs.h> 36#include <cutils/sockets.h> 37#include <cutils/log.h> 38#include <cutils/properties.h> 39#include <cutils/multiuser.h> 40 41#include <private/android_filesystem_config.h> 42 43#if INCLUDE_SYS_MOUNT_FOR_STATFS 44#include <sys/mount.h> 45#else 46#include <sys/statfs.h> 47#endif 48 49#define SOCKET_PATH "installd" 50 51 52/* elements combined with a valid package name to form paths */ 53 54#define PRIMARY_USER_PREFIX "data/" 55#define SECONDARY_USER_PREFIX "user/" 56 57#define PKG_DIR_POSTFIX "" 58 59#define PKG_LIB_POSTFIX "/lib" 60 61#define CACHE_DIR_POSTFIX "/cache" 62 63#define APP_SUBDIR "app/" // sub-directory under ANDROID_DATA 64 65#define APP_LIB_SUBDIR "app-lib/" // sub-directory under ANDROID_DATA 66 67#define MEDIA_SUBDIR "media/" // sub-directory under ANDROID_DATA 68 69/* other handy constants */ 70 71#define PRIVATE_APP_SUBDIR "app-private/" // sub-directory under ANDROID_DATA 72 73#define DALVIK_CACHE_PREFIX "/data/dalvik-cache/" 74#define DALVIK_CACHE_POSTFIX "/classes.dex" 75 76#define UPDATE_COMMANDS_DIR_PREFIX "/system/etc/updatecmds/" 77 78#define PKG_NAME_MAX 128 /* largest allowed package name */ 79#define PKG_PATH_MAX 256 /* max size of any path we use */ 80 81/* data structures */ 82 83typedef struct { 84 char* path; 85 size_t len; 86} dir_rec_t; 87 88typedef struct { 89 size_t count; 90 dir_rec_t* dirs; 91} dir_rec_array_t; 92 93extern dir_rec_t android_app_dir; 94extern dir_rec_t android_app_private_dir; 95extern dir_rec_t android_app_lib_dir; 96extern dir_rec_t android_data_dir; 97extern dir_rec_t android_asec_dir; 98extern dir_rec_t android_media_dir; 99extern dir_rec_array_t android_system_dirs; 100 101typedef struct cache_dir_struct { 102 struct cache_dir_struct* parent; 103 int32_t childCount; 104 int32_t hiddenCount; 105 int32_t deleted; 106 char name[]; 107} cache_dir_t; 108 109typedef struct { 110 cache_dir_t* dir; 111 time_t modTime; 112 char name[]; 113} cache_file_t; 114 115typedef struct { 116 size_t numDirs; 117 size_t availDirs; 118 cache_dir_t** dirs; 119 size_t numFiles; 120 size_t availFiles; 121 cache_file_t** files; 122 size_t numCollected; 123 void* memBlocks; 124 int8_t* curMemBlockAvail; 125 int8_t* curMemBlockEnd; 126} cache_t; 127 128/* util.c */ 129 130int create_pkg_path_in_dir(char path[PKG_PATH_MAX], 131 const dir_rec_t* dir, 132 const char* pkgname, 133 const char* postfix); 134 135int create_pkg_path(char path[PKG_PATH_MAX], 136 const char *pkgname, 137 const char *postfix, 138 userid_t userid); 139 140int create_user_path(char path[PKG_PATH_MAX], 141 userid_t userid); 142 143int create_user_media_path(char path[PKG_PATH_MAX], userid_t userid); 144 145int create_move_path(char path[PKG_PATH_MAX], 146 const char* pkgname, 147 const char* leaf, 148 userid_t userid); 149 150int is_valid_package_name(const char* pkgname); 151 152int create_cache_path(char path[PKG_PATH_MAX], const char *src); 153 154int delete_dir_contents(const char *pathname, 155 int also_delete_dir, 156 const char *ignore); 157 158int delete_dir_contents_fd(int dfd, const char *name); 159 160int lookup_media_dir(char basepath[PATH_MAX], const char *dir); 161 162int64_t data_disk_free(); 163 164cache_t* start_cache_collection(); 165 166void add_cache_files(cache_t* cache, const char *basepath, const char *cachedir); 167 168void clear_cache_files(cache_t* cache, int64_t free_size); 169 170void finish_cache_collection(cache_t* cache); 171 172int validate_system_app_path(const char* path); 173 174int get_path_from_env(dir_rec_t* rec, const char* var); 175 176int get_path_from_string(dir_rec_t* rec, const char* path); 177 178int copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix); 179 180int validate_apk_path(const char *path); 181 182int append_and_increment(char** dst, const char* src, size_t* dst_size); 183 184char *build_string2(char *s1, char *s2); 185char *build_string3(char *s1, char *s2, char *s3); 186 187int ensure_dir(const char* path, mode_t mode, uid_t uid, gid_t gid); 188int ensure_media_user_dirs(userid_t userid); 189 190/* commands.c */ 191 192int install(const char *pkgname, uid_t uid, gid_t gid, const char *seinfo); 193int uninstall(const char *pkgname, userid_t userid); 194int renamepkg(const char *oldpkgname, const char *newpkgname); 195int fix_uid(const char *pkgname, uid_t uid, gid_t gid); 196int delete_user_data(const char *pkgname, userid_t userid); 197int make_user_data(const char *pkgname, uid_t uid, userid_t userid); 198int delete_user(userid_t userid); 199int delete_cache(const char *pkgname, userid_t userid); 200int move_dex(const char *src, const char *dst); 201int rm_dex(const char *path); 202int protect(char *pkgname, gid_t gid); 203int get_size(const char *pkgname, userid_t userid, const char *apkpath, const char *libdirpath, 204 const char *fwdlock_apkpath, const char *asecpath, int64_t *codesize, 205 int64_t *datasize, int64_t *cachesize, int64_t *asecsize); 206int free_cache(int64_t free_size); 207int dexopt(const char *apk_path, uid_t uid, int is_public); 208int movefiles(); 209int linklib(const char* target, const char* source, int userId); 210