installd.h revision 41ea424413c0381ef2aa15fc5bd5d4b88abd23c4
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#include <string> 35 36#include <cutils/fs.h> 37#include <cutils/sockets.h> 38#include <cutils/log.h> 39#include <cutils/properties.h> 40#include <cutils/multiuser.h> 41 42#include <private/android_filesystem_config.h> 43 44#if defined(__APPLE__) 45#include <sys/mount.h> 46#else 47#include <sys/statfs.h> 48#endif 49 50#define SOCKET_PATH "installd" 51 52 53/* elements combined with a valid package name to form paths */ 54 55#define PRIMARY_USER_PREFIX "data/" 56#define SECONDARY_USER_PREFIX "user/" 57 58#define PKG_DIR_POSTFIX "" 59 60#define PKG_LIB_POSTFIX "/lib" 61 62#define CACHE_DIR_POSTFIX "/cache" 63#define CODE_CACHE_DIR_POSTFIX "/code_cache" 64 65#define APP_SUBDIR "app/" // sub-directory under ANDROID_DATA 66#define PRIV_APP_SUBDIR "priv-app/" // sub-directory under ANDROID_DATA 67 68#define APP_LIB_SUBDIR "app-lib/" // sub-directory under ANDROID_DATA 69 70#define MEDIA_SUBDIR "media/" // sub-directory under ANDROID_DATA 71 72/* other handy constants */ 73 74#define PRIVATE_APP_SUBDIR "app-private/" // sub-directory under ANDROID_DATA 75 76#define DALVIK_CACHE_PREFIX "/data/dalvik-cache/" 77#define DALVIK_CACHE_POSTFIX "/classes.dex" 78 79#define UPDATE_COMMANDS_DIR_PREFIX "/system/etc/updatecmds/" 80 81#define IDMAP_PREFIX "/data/resource-cache/" 82#define IDMAP_SUFFIX "@idmap" 83 84#define PKG_NAME_MAX 128 /* largest allowed package name */ 85#define PKG_PATH_MAX 256 /* max size of any path we use */ 86 87/* dexopt needed flags matching those in dalvik.system.DexFile */ 88#define DEXOPT_DEX2OAT_NEEDED 1 89#define DEXOPT_PATCHOAT_NEEDED 2 90#define DEXOPT_SELF_PATCHOAT_NEEDED 3 91 92/* data structures */ 93 94typedef struct { 95 char* path; 96 size_t len; 97} dir_rec_t; 98 99typedef struct { 100 size_t count; 101 dir_rec_t* dirs; 102} dir_rec_array_t; 103 104extern dir_rec_t android_app_dir; 105extern dir_rec_t android_app_private_dir; 106extern dir_rec_t android_app_lib_dir; 107extern dir_rec_t android_data_dir; 108extern dir_rec_t android_asec_dir; 109extern dir_rec_t android_media_dir; 110extern dir_rec_t android_mnt_expand_dir; 111extern dir_rec_array_t android_system_dirs; 112 113typedef struct cache_dir_struct { 114 struct cache_dir_struct* parent; 115 int32_t childCount; 116 int32_t hiddenCount; 117 int32_t deleted; 118 char name[]; 119} cache_dir_t; 120 121typedef struct { 122 cache_dir_t* dir; 123 time_t modTime; 124 char name[]; 125} cache_file_t; 126 127typedef struct { 128 size_t numDirs; 129 size_t availDirs; 130 cache_dir_t** dirs; 131 size_t numFiles; 132 size_t availFiles; 133 cache_file_t** files; 134 size_t numCollected; 135 void* memBlocks; 136 int8_t* curMemBlockAvail; 137 int8_t* curMemBlockEnd; 138} cache_t; 139 140/* util.c */ 141 142// TODO: rename to create_data_user_package_path 143std::string create_package_data_path(const char* volume_uuid, 144 const char* package_name, userid_t user); 145 146int create_pkg_path(char path[PKG_PATH_MAX], 147 const char *pkgname, 148 const char *postfix, 149 userid_t userid); 150 151std::string create_data_path(const char* volume_uuid); 152 153std::string create_data_user_path(const char* volume_uuid, userid_t userid); 154 155std::string create_data_media_path(const char* volume_uuid, userid_t userid); 156 157int create_user_config_path(char path[PKG_PATH_MAX], userid_t userid); 158 159int create_move_path(char path[PKG_PATH_MAX], 160 const char* pkgname, 161 const char* leaf, 162 userid_t userid); 163 164int is_valid_package_name(const char* pkgname); 165 166int create_cache_path(char path[PKG_PATH_MAX], const char *src, 167 const char *instruction_set); 168 169int delete_dir_contents(const char *pathname, 170 int also_delete_dir, 171 int (*exclusion_predicate)(const char *name, const int is_dir)); 172 173int delete_dir_contents_fd(int dfd, const char *name); 174 175int copy_dir_files(const char *srcname, const char *dstname, uid_t owner, gid_t group); 176 177int lookup_media_dir(char basepath[PATH_MAX], const char *dir); 178 179int64_t data_disk_free(const std::string& data_path); 180 181cache_t* start_cache_collection(); 182 183void add_cache_files(cache_t* cache, const char *basepath, const char *cachedir); 184 185void clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size); 186 187void finish_cache_collection(cache_t* cache); 188 189int validate_system_app_path(const char* path); 190 191int get_path_from_env(dir_rec_t* rec, const char* var); 192 193int get_path_from_string(dir_rec_t* rec, const char* path); 194 195int copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix); 196 197int validate_apk_path(const char *path); 198 199int append_and_increment(char** dst, const char* src, size_t* dst_size); 200 201char *build_string2(const char *s1, const char *s2); 202char *build_string3(const char *s1, const char *s2, const char *s3); 203 204int ensure_dir(const char* path, mode_t mode, uid_t uid, gid_t gid); 205int ensure_media_user_dirs(const char* uuid, userid_t userid); 206int ensure_config_user_dirs(userid_t userid); 207int create_profile_file(const char *pkgname, gid_t gid); 208void remove_profile_file(const char *pkgname); 209 210/* commands.c */ 211 212int install(const char *uuid, const char *pkgname, uid_t uid, gid_t gid, const char *seinfo); 213int uninstall(const char *uuid, const char *pkgname, userid_t userid); 214int renamepkg(const char *oldpkgname, const char *newpkgname); 215int fix_uid(const char *uuid, const char *pkgname, uid_t uid, gid_t gid); 216int delete_user_data(const char *uuid, const char *pkgname, userid_t userid); 217int make_user_data(const char *uuid, const char *pkgname, uid_t uid, userid_t userid, const char* seinfo); 218int make_user_config(userid_t userid); 219int delete_user(const char *uuid, userid_t userid); 220int delete_cache(const char *uuid, const char *pkgname, userid_t userid); 221int delete_code_cache(const char *uuid, const char *pkgname, userid_t userid); 222int move_dex(const char *src, const char *dst, const char *instruction_set); 223int rm_dex(const char *path, const char *instruction_set); 224int protect(char *pkgname, gid_t gid); 225int get_size(const char *uuid, const char *pkgname, userid_t userid, const char *apkpath, const char *libdirpath, 226 const char *fwdlock_apkpath, const char *asecpath, const char *instruction_set, 227 int64_t *codesize, int64_t *datasize, int64_t *cachesize, int64_t *asecsize); 228int free_cache(const char *uuid, int64_t free_size); 229int dexopt(const char *apk_path, uid_t uid, bool is_public, const char *pkgName, 230 const char *instruction_set, int dexopt_needed, bool vm_safe_mode, 231 bool debuggable, const char* oat_dir); 232int mark_boot_complete(const char *instruction_set); 233int movefiles(); 234int linklib(const char *uuid, const char* target, const char* source, int userId); 235int idmap(const char *target_path, const char *overlay_path, uid_t uid); 236int restorecon_data(const char *uuid, const char* pkgName, const char* seinfo, uid_t uid); 237int create_oat_dir(const char* oat_dir, const char *instruction_set); 238int rm_package_dir(const char* apk_path); 239int calculate_oat_file_path(char path[PKG_PATH_MAX], const char *oat_dir, const char *apk_path, 240 const char *instruction_set); 241