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 #ifndef UTILS_H_ 19 #define UTILS_H_ 20 21 #include <string> 22 #include <vector> 23 24 #include <dirent.h> 25 #include <inttypes.h> 26 #include <unistd.h> 27 #include <utime.h> 28 29 #include <cutils/multiuser.h> 30 31 #include <installd_constants.h> 32 33 #define MEASURE_DEBUG 0 34 #define FIXUP_DEBUG 0 35 36 #define BYPASS_QUOTA 0 37 #define BYPASS_SDCARDFS 0 38 39 namespace android { 40 namespace installd { 41 42 constexpr const char* kXattrInodeCache = "user.inode_cache"; 43 constexpr const char* kXattrInodeCodeCache = "user.inode_code_cache"; 44 constexpr const char* kXattrCacheGroup = "user.cache_group"; 45 constexpr const char* kXattrCacheTombstone = "user.cache_tombstone"; 46 47 std::string create_data_path(const char* volume_uuid); 48 49 std::string create_data_app_path(const char* volume_uuid); 50 std::string create_data_app_package_path(const char* volume_uuid, const char* package_name); 51 52 std::string create_data_user_ce_path(const char* volume_uuid, userid_t userid); 53 std::string create_data_user_de_path(const char* volume_uuid, userid_t userid); 54 55 std::string create_data_user_ce_package_path(const char* volume_uuid, 56 userid_t user, const char* package_name); 57 std::string create_data_user_ce_package_path(const char* volume_uuid, 58 userid_t user, const char* package_name, ino_t ce_data_inode); 59 std::string create_data_user_de_package_path(const char* volume_uuid, 60 userid_t user, const char* package_name); 61 std::string create_data_user_ce_package_path_as_user_link( 62 const char* volume_uuid, userid_t userid, const char* package_name); 63 64 std::string create_data_misc_ce_rollback_base_path(const char* volume_uuid, userid_t user); 65 std::string create_data_misc_de_rollback_base_path(const char* volume_uuid, userid_t user); 66 std::string create_data_misc_ce_rollback_path(const char* volume_uuid, userid_t user, 67 int32_t snapshot_id); 68 std::string create_data_misc_de_rollback_path(const char* volume_uuid, userid_t user, 69 int32_t snapshot_id); 70 std::string create_data_misc_ce_rollback_package_path(const char* volume_uuid, 71 userid_t user, int32_t snapshot_id, const char* package_name); 72 std::string create_data_misc_ce_rollback_package_path(const char* volume_uuid, 73 userid_t user, int32_t snapshot_id, const char* package_name, ino_t ce_rollback_inode); 74 std::string create_data_misc_de_rollback_package_path(const char* volume_uuid, 75 userid_t user, int32_t snapshot_id, const char* package_name); 76 77 std::string create_data_media_path(const char* volume_uuid, userid_t userid); 78 std::string create_data_media_package_path(const char* volume_uuid, userid_t userid, 79 const char* data_type, const char* package_name); 80 81 std::string create_data_misc_legacy_path(userid_t userid); 82 83 std::string create_data_dalvik_cache_path(); 84 85 std::string create_primary_cur_profile_dir_path(userid_t userid); 86 std::string create_primary_current_profile_package_dir_path( 87 userid_t user, const std::string& package_name); 88 89 std::string create_primary_ref_profile_dir_path(); 90 std::string create_primary_reference_profile_package_dir_path(const std::string& package_name); 91 92 std::string create_current_profile_path( 93 userid_t user, 94 const std::string& package_name, 95 const std::string& location, 96 bool is_secondary_dex); 97 std::string create_reference_profile_path( 98 const std::string& package_name, 99 const std::string& location, 100 bool is_secondary_dex); 101 std::string create_snapshot_profile_path( 102 const std::string& package, 103 const std::string& profile_name); 104 105 std::vector<userid_t> get_known_users(const char* volume_uuid); 106 107 int calculate_tree_size(const std::string& path, int64_t* size, 108 int32_t include_gid = -1, int32_t exclude_gid = -1, bool exclude_apps = false); 109 110 int create_user_config_path(char path[PKG_PATH_MAX], userid_t userid); 111 112 bool is_valid_filename(const std::string& name); 113 bool is_valid_package_name(const std::string& packageName); 114 115 int create_dir_if_needed(const std::string& pathname, mode_t mode); 116 117 int delete_dir_contents(const std::string& pathname, bool ignore_if_missing = false); 118 int delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing = false); 119 120 int delete_dir_contents(const char *pathname, 121 int also_delete_dir, 122 int (*exclusion_predicate)(const char *name, const int is_dir), 123 bool ignore_if_missing = false); 124 125 int delete_dir_contents_fd(int dfd, const char *name); 126 127 int rm_package_dir(const std::string& package_dir); 128 129 int copy_dir_files(const char *srcname, const char *dstname, uid_t owner, gid_t group); 130 131 int64_t data_disk_free(const std::string& data_path); 132 133 int get_path_inode(const std::string& path, ino_t *inode); 134 135 int write_path_inode(const std::string& parent, const char* name, const char* inode_xattr); 136 std::string read_path_inode(const std::string& parent, const char* name, const char* inode_xattr); 137 void remove_path_xattr(const std::string& path, const char* inode_xattr); 138 139 int validate_system_app_path(const char* path); 140 bool validate_secondary_dex_path(const std::string& pkgname, const std::string& dex_path, 141 const char* volume_uuid, int uid, int storage_flag); 142 143 int validate_apk_path(const char *path); 144 int validate_apk_path_subdirs(const char *path); 145 146 int ensure_config_user_dirs(userid_t userid); 147 148 int wait_child(pid_t pid); 149 150 int prepare_app_cache_dir(const std::string& parent, const char* name, mode_t target_mode, 151 uid_t uid, gid_t gid); 152 153 // Collect all non empty profiles from the global profile directory and 154 // put then into profile_paths. The profiles are identified based on PROFILE_EXT extension. 155 // If a subdirectory or profile file cannot be opened the method logs a warning and moves on. 156 // It returns true if there were no errors at all, and false otherwise. 157 bool collect_profiles(std::vector<std::string>* profiles_paths); 158 159 void drop_capabilities(uid_t uid); 160 161 } // namespace installd 162 } // namespace android 163 164 #endif // UTILS_H_ 165
