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/sockets.h> 36 #include <cutils/log.h> 37 #include <cutils/properties.h> 38 39 #include <private/android_filesystem_config.h> 40 41 #if INCLUDE_SYS_MOUNT_FOR_STATFS 42 #include <sys/mount.h> 43 #else 44 #include <sys/statfs.h> 45 #endif 46 47 #define SOCKET_PATH "installd" 48 49 50 /* elements combined with a valid package name to form paths */ 51 52 #define PRIMARY_USER_PREFIX "data/" 53 #define SECONDARY_USER_PREFIX "user/" 54 55 #define PKG_DIR_POSTFIX "" 56 57 #define PKG_LIB_POSTFIX "/lib" 58 59 #define CACHE_DIR_POSTFIX "/cache" 60 61 #define APP_SUBDIR "app/" // sub-directory under ANDROID_DATA 62 63 /* other handy constants */ 64 65 #define PRIVATE_APP_SUBDIR "app-private/" // sub-directory under ANDROID_DATA 66 67 #define DALVIK_CACHE_PREFIX "/data/dalvik-cache/" 68 #define DALVIK_CACHE_POSTFIX "/classes.dex" 69 70 #define UPDATE_COMMANDS_DIR_PREFIX "/system/etc/updatecmds/" 71 72 #define PKG_NAME_MAX 128 /* largest allowed package name */ 73 #define PKG_PATH_MAX 256 /* max size of any path we use */ 74 75 #define PER_USER_RANGE ((uid_t)100000) /* range of uids per user 76 uid = persona * PER_USER_RANGE + appid */ 77 78 /* data structures */ 79 80 typedef struct { 81 char* path; 82 size_t len; 83 } dir_rec_t; 84 85 typedef struct { 86 size_t count; 87 dir_rec_t* dirs; 88 } dir_rec_array_t; 89 90 extern dir_rec_t android_app_dir; 91 extern dir_rec_t android_app_private_dir; 92 extern dir_rec_t android_data_dir; 93 extern dir_rec_t android_asec_dir; 94 extern dir_rec_array_t android_system_dirs; 95 96 /* util.c */ 97 98 int create_pkg_path_in_dir(char path[PKG_PATH_MAX], 99 const dir_rec_t* dir, 100 const char* pkgname, 101 const char* postfix); 102 103 int create_pkg_path(char path[PKG_PATH_MAX], 104 const char *pkgname, 105 const char *postfix, 106 uid_t persona); 107 108 int create_persona_path(char path[PKG_PATH_MAX], 109 uid_t persona); 110 111 int create_move_path(char path[PKG_PATH_MAX], 112 const char* pkgname, 113 const char* leaf, 114 uid_t persona); 115 116 int is_valid_package_name(const char* pkgname); 117 118 int create_cache_path(char path[PKG_PATH_MAX], const char *src); 119 120 int delete_dir_contents(const char *pathname, 121 int also_delete_dir, 122 const char *ignore); 123 124 int delete_dir_contents_fd(int dfd, const char *name); 125 126 int validate_system_app_path(const char* path); 127 128 int get_path_from_env(dir_rec_t* rec, const char* var); 129 130 int get_path_from_string(dir_rec_t* rec, const char* path); 131 132 int copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix); 133 134 int validate_apk_path(const char *path); 135 136 int append_and_increment(char** dst, const char* src, size_t* dst_size); 137 138 char *build_string2(char *s1, char *s2); 139 char *build_string3(char *s1, char *s2, char *s3); 140 141 /* commands.c */ 142 143 int install(const char *pkgname, uid_t uid, gid_t gid); 144 int uninstall(const char *pkgname, uid_t persona); 145 int renamepkg(const char *oldpkgname, const char *newpkgname); 146 int fix_uid(const char *pkgname, uid_t uid, gid_t gid); 147 int delete_user_data(const char *pkgname, uid_t persona); 148 int make_user_data(const char *pkgname, uid_t uid, uid_t persona); 149 int delete_persona(uid_t persona); 150 int clone_persona_data(uid_t src_persona, uid_t target_persona, int copy); 151 int delete_cache(const char *pkgname); 152 int move_dex(const char *src, const char *dst); 153 int rm_dex(const char *path); 154 int protect(char *pkgname, gid_t gid); 155 int get_size(const char *pkgname, const char *apkpath, const char *fwdlock_apkpath, 156 const char *asecpath, int64_t *codesize, int64_t *datasize, int64_t *cachesize, 157 int64_t *asecsize); 158 int free_cache(int64_t free_size); 159 int dexopt(const char *apk_path, uid_t uid, int is_public); 160 int movefiles(); 161 int linklib(const char* target, const char* source); 162 int unlinklib(const char* libPath); 163
