utils.cpp revision b06f98aabc5381fd6366526d9b31b5d0345481b6
194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/* 294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** Copyright 2008, The Android Open Source Project 394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 4d93707342a61e66bc3eb2145628158452f577f42Dave Allison** Licensed under the Apache License, Version 2.0 (the "License"); 5d93707342a61e66bc3eb2145628158452f577f42Dave Allison** you may not use this file except in compliance with the License. 6d93707342a61e66bc3eb2145628158452f577f42Dave Allison** You may obtain a copy of the License at 794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 8d93707342a61e66bc3eb2145628158452f577f42Dave Allison** http://www.apache.org/licenses/LICENSE-2.0 994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 10d93707342a61e66bc3eb2145628158452f577f42Dave Allison** Unless required by applicable law or agreed to in writing, software 11d93707342a61e66bc3eb2145628158452f577f42Dave Allison** distributed under the License is distributed on an "AS IS" BASIS, 12d93707342a61e66bc3eb2145628158452f577f42Dave Allison** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13d93707342a61e66bc3eb2145628158452f577f42Dave Allison** See the License for the specific language governing permissions and 1494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** limitations under the License. 1594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood*/ 1694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "utils.h" 1802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 1902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <errno.h> 2002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <fcntl.h> 2102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <stdlib.h> 2202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/stat.h> 2302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/wait.h> 2402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 2502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#if defined(__APPLE__) 2602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/mount.h> 2702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#else 2802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/statfs.h> 2902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 3094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31e4ec9eb7b4c452493589983970ba5ccc501728d1Elliott Hughes#include <android-base/logging.h> 3202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <android-base/stringprintf.h> 3302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/fs.h> 3402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/log.h> 3502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <private/android_filesystem_config.h> 3602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 3702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "globals.h" // extern variables. 3894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#ifndef LOG_TAG 4002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#define LOG_TAG "installd" 4102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 42c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#define CACHE_NOISY(x) //x 4394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 44c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyusing android::base::StringPrintf; 4594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace android { 4702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace installd { 4802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 4994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 50c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Check that given string is valid filename, and that it attempts no 51c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * parent or child directory traversal. 5294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 53c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeystatic bool is_valid_filename(const std::string& name) { 54c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (name.empty() || (name == ".") || (name == "..") 55c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey || (name.find('/') != std::string::npos)) { 56c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return false; 5794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 58c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return true; 5994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 6194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 626a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestatic void check_package_name(const char* package_name) { 636a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_filename(package_name)); 646a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_package_name(package_name) == 0); 656a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 666a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 67c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey/** 68d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name where package app contents should be stored for 69d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * the given volume UUID and package name. An empty UUID is assumed to 70d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * be internal storage. 71d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 72d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_package_path(const char* volume_uuid, 73d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey const char* package_name) { 746a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 75d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 76d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_app_path(volume_uuid).c_str(), package_name); 77d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 78d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 79d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 80c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Create the path name where package data should be stored for the given 81c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * volume UUID, package name, and user ID. An empty UUID is assumed to be 82c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * internal storage. 83c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey */ 84d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_user_package_path(const char* volume_uuid, 85d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey userid_t user, const char* package_name) { 866a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 87d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 88d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_user_path(volume_uuid, user).c_str(), package_name); 89c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 9094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 9163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_package_path(const char* volume_uuid, 9263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey userid_t user, const char* package_name) { 936a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 9463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/%s", 9563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey create_data_user_de_path(volume_uuid, user).c_str(), package_name); 9663ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 9763ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 98c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyint create_pkg_path(char path[PKG_PATH_MAX], const char *pkgname, 99c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char *postfix, userid_t userid) { 100c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (is_valid_package_name(pkgname) != 0) { 101c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 10294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 10394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 10494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey std::string _tmp(create_data_user_package_path(nullptr, userid, pkgname) + postfix); 106c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* tmp = _tmp.c_str(); 107c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(tmp) >= PKG_PATH_MAX) { 108c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 109c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 110c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 111c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey strcpy(path, tmp); 112c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return 0; 11394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 11494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 11594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 11641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_path(const char* volume_uuid) { 11741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 11841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return "/data"; 11994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 12041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey CHECK(is_valid_filename(volume_uuid)); 12141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("/mnt/expand/%s", volume_uuid); 12294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 12341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey} 12494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 12541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey/** 126d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name for app data. 127d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 128d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_path(const char* volume_uuid) { 129d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/app", create_data_path(volume_uuid).c_str()); 130d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 131d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 132d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 13341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey * Create the path name for user data for a certain userid. 13441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey */ 13541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_user_path(const char* volume_uuid, userid_t userid) { 13641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey std::string data(create_data_path(volume_uuid)); 13741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 13841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (userid == 0) { 13941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/data", data.c_str()); 14041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 14141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 14294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 14341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 14441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 14594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 14694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 14794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 14894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 14963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey * Create the path name for device encrypted user data for a certain userid. 15063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey */ 15163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_path(const char* volume_uuid, userid_t userid) { 15263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey std::string data(create_data_path(volume_uuid)); 15363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/user_de/%u", data.c_str(), userid); 15463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 15563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 15663ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey/** 157abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 15894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 15941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_media_path(const char* volume_uuid, userid_t userid) { 16041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/media/%u", create_data_path(volume_uuid).c_str(), userid); 16194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 16294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1636a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profiles_path(userid_t userid) { 1646a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/cur/%u", android_profiles_dir.path, userid); 1656a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 1666a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 1676a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profile_package_path(userid_t user, const char* package_name) { 1686a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 1696a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/%s",create_data_user_profiles_path(user).c_str(), package_name); 1706a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 1716a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 1726a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_ref_profile_package_path(const char* package_name) { 1736a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 1746a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/ref/%s", android_profiles_dir.path, package_name); 1756a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 1766a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 177e36372423000a906bafae68844ebc6c42d09335aJeff Sharkeystd::vector<userid_t> get_known_users(const char* volume_uuid) { 178e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::vector<userid_t> users; 179e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 180e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // We always have an owner 181e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(0); 182e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 183e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::string path(create_data_path(volume_uuid) + "/" + SECONDARY_USER_PREFIX); 184e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey DIR* dir = opendir(path.c_str()); 185e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (dir == NULL) { 186e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // Unable to discover other users, but at least return owner 187e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << path; 188e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 189e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 190e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 191e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey struct dirent* ent; 192e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey while ((ent = readdir(dir))) { 193e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (ent->d_type != DT_DIR) { 194e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey continue; 195e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 196e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 197e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey char* end; 198e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey userid_t user = strtol(ent->d_name, &end, 10); 199e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (*end == '\0' && user != 0) { 200e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey LOG(DEBUG) << "Found valid user " << user; 201e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(user); 202e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 203e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 204e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey closedir(dir); 205e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 206e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 207e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey} 208e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 209095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee/** 210095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Create the path name for config for a certain userid. 211095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Returns 0 on success, and -1 on failure. 212095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee */ 213095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint create_user_config_path(char path[PATH_MAX], userid_t userid) { 214095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (snprintf(path, PATH_MAX, "%s%d", "/data/misc/user/", userid) > PATH_MAX) { 215095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 216095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 217095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 218095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 219095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 22094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 22194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 22294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 22302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe userid_t userid ATTRIBUTE_UNUSED) 22494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 22594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 22694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 22794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 22894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 22994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 23194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 23294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 23394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 23594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 23694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 23794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 23894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint is_valid_package_name(const char* pkgname) { 23994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 24094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 24194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 242c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(pkgname) > PKG_NAME_MAX) { 243c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 244c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 245c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 24694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 24794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 24894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 24994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 25094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 25194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 25294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 25394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 25494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 25594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 25694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 25794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 26194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 26294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 26394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 26994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 27094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 27194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 27294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 27394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 27494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 27594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 27794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 28194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 28294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2833aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 2843aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 28594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 28994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 29594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2973aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 2983aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 2993aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 3003aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 30194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 30399d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh int subfd; 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 31094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3128b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 31494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 31594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 31994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 32094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 32294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 32394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 32494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3253aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 32694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 32794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 32894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 32994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 33094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 33194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 33294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 33394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 33494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 33594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 33694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 33794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 33894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 33994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 34194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 34294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 34394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 344b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents(const std::string& pathname, bool ignore_if_missing) { 345b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 0, NULL, ignore_if_missing); 346ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 347ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 348b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing) { 349b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 1, NULL, ignore_if_missing); 350ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 351ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 35294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 35394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 354b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle int (*exclusion_predicate)(const char*, const int), 355b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle bool ignore_if_missing) 35694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 35794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 35894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 35994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 36094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 36194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 362b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle if (ignore_if_missing && (errno == ENOENT)) { 363b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return 0; 364b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle } 36594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 36694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 36794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3683aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 36994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 37094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 37194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 37294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 37394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 37494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 37794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 37894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 37994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 38094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 38194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 38294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 38394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3848b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich fd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 38594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 38694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 38794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 38894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 38994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 39094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 39194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 39294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 39394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 39494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 39594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 39694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 39794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 39894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 39994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 40060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 40160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 40260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 40360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 40460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 40560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 40660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 40760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 40860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 40960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 41060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 41160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 41260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 41360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 41460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 41560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 41660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 41760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 41860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 41960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 42060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 42160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 42260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 42360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 42460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 42560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 42660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 42760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 42860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 42960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 43060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 43160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 43260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 43360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 43460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 43560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 43660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 43760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 43860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 43960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 44060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 44160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 44360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 44460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 44660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 44760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 44860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 44960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 45060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 45260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 45360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 45460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 45760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 45860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 46060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 46160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 46260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 46360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 46460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 46560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 46660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 46760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 46860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 46960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 47060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 47160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 47260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 47360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 47460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 47560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 47660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 47760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 47860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 47960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 48060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 48160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 48260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 48360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 48460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 48660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 48760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 48860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 48960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 49060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 49160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 49260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 49460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 49560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 49660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 49760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 49894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint lookup_media_dir(char basepath[PATH_MAX], const char *dir) 49994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 50094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 50194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 50294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 50394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* dirpos = basepath + strlen(basepath); 50494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 50594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(dirpos-1)) != '/') { 50694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = '/'; 50794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dirpos++; 50894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 50994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 51094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Looking up %s in %s\n", dir, basepath)); 51194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Verify the path won't extend beyond our buffer, to avoid 51294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // repeated checking later. 51394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((dirpos-basepath+strlen(dir)) >= (PATH_MAX-1)) { 51494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Path exceeds limit: %s%s", basepath, dir); 51594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 51694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 51794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 51894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // First, can we find this directory with the case that is given? 51994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, dir); 52094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(basepath, &s) >= 0) { 52194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found direct: %s\n", basepath)); 52294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 52394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 52494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 52594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Not found with that case... search through all entries to find 52694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // one that matches regardless of case. 52794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = 0; 52894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 52994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 53094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 53194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 53294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 53394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 53494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 53594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (strcasecmp(de->d_name, dir) == 0) { 53694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, de->d_name); 53794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found search: %s\n", basepath)); 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 54094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Couldn't find %s in %s", dir, basepath); 54494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyint64_t data_disk_free(const std::string& data_path) 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 55094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 55141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (statfs(data_path.c_str(), &sfs) == 0) { 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 55441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey PLOG(ERROR) << "Couldn't statfs " << data_path; 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 55994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 56794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 57394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 57494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 57594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 57794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %d", res, len)); 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 58094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 58194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 58494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 59219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey int8_t* newBlock = (int8_t*) malloc(CACHE_BLOCK_SIZE); 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("cache_malloc: ret %p size %d, block=%p, nextPos=%p", 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 62392dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Setting file %p at position %d in array %p", file, 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7248b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 79594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 79694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 80094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 80194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 80494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 80594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 80694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid add_cache_files(cache_t* cache, const char *basepath, const char *cachedir) 80794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 80894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 80994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 81094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 81194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 81294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("add_cache_files: base=%s cachedir=%s\n", basepath, cachedir)); 81394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 81494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 81594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 81694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 81794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 81994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 82094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 82194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 82294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 82394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* pathpos; 82494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 82594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 82694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 82794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 82894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 82994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirname, basepath); 83294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos = dirname + strlen(dirname); 83394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(pathpos-1)) != '/') { 83494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = '/'; 83594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos++; 83694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = 0; 83794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cachedir != NULL) { 83994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s/%s", name, cachedir); 84094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 84194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s", name); 84294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 84494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 84594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 84694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 84794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 84894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 84994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 85094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 85594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 85694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 85894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 85994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 86094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 86194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 86294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 86494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 86594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 86694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 86794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 86894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 86994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 87094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 87194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 87294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 87394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 87594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 87694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 87794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 87894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 87994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 88094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 88194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 88294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 88394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 88594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 88694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 88794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 88894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 88994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 89394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 89494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 89694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 89794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 89894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 89994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 90094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 90194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 90294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 90494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 90694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 90794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 90894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 90994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 91094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 91194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 91241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyvoid clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size) 91394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 91494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 91594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 91694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 91794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 91892dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 91994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 92094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 92194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 92294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 92394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 92494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 92594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 92694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 92794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 92894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 92994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 93094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 93194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 93294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 93494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 93594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 93741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (data_disk_free(data_path) > free_size) { 93894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 94194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 94494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 94594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 95799d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh CACHE_NOISY(size_t i;) 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("clear_cache_files: %d dirs, %d files\n", cache->numDirs, cache->numFiles)); 96094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 96394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("dir #%d: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("file #%d: %p %s time=%d dir=%p\n", i, file, file->name, 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 982c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 983c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 984c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 985c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 986e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkeystatic int validate_path(const dir_rec_t* dir, const char* path, int maxSubdirs) { 987c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 988c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 989c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 990c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 991c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 992c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 993e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey if ((--maxSubdirs == 0) && strchr(subdir, '/') != NULL) { 994c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 995c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 996c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 997c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 998c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 999c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 1000c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 1001c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 1002c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1003c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1004c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1005c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 1006c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 1007c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1008c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 101094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 101194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 101294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 101394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 101494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 101594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 101694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 101794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 1018e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(android_system_dirs.dirs + i, path, 1); 101994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 102094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 102194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 102394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 102494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 102694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 102794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 102894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 102994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 103094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 103194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 103294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 103394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 103494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 103594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 103694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 103794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 103894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 104094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 104194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 104294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 104494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 104794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 104894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 104994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 105094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 105194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 105294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 105394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 105694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 105794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 105894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 106194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 106294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 106494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 106594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 106694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 106794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 106994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 107094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 107194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 107294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 107494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 107594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey rec->path = (char*) malloc(dst_size); 107794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 107894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 107994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 108094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 108294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 108594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 108894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 109094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 109194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 109294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 109394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 109494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 109794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 110294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 110394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 110494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 110594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 110694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 110894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 110994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 111094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1111d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * Check whether path points to a valid path for an APK file. The path must 1112d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * begin with a whitelisted prefix path and must be no deeper than |maxSubdirs| within 1113d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * that path. Returns -1 when an invalid path is encountered and 0 when a valid path 1114d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * is encountered. 111594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 1116d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathstatic int validate_apk_path_internal(const char *path, int maxSubdirs) { 1117c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 111894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1119c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 112094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1121c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 11225c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy } else if (!strncmp(path, android_app_ephemeral_dir.path, android_app_ephemeral_dir.len)) { 11235c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy dir = &android_app_ephemeral_dir; 112494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1125c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 1126e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey } else if (!strncmp(path, android_mnt_expand_dir.path, android_mnt_expand_dir.len)) { 1127e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey dir = &android_mnt_expand_dir; 1128d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath if (maxSubdirs < 2) { 1129d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath maxSubdirs = 2; 1130d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath } 113194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 113294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 113394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 113494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1135e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(dir, path, maxSubdirs); 113694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 113794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1138d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path(const char* path) { 1139d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 1 /* maxSubdirs */); 1140d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1141d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 1142d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path_subdirs(const char* path) { 1143d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 3 /* maxSubdirs */); 1144d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1145d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 114694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 114794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 114894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 114994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 115094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 115194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 115294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 115394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 115494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 115594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 115619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string2(const char *s1, const char *s2) { 115794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 115894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 115994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 116094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 116194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 116219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 116394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 116494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 116594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 116694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 116794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 116894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 116994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 117094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 117119803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string3(const char *s1, const char *s2, const char *s3) { 117294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 117394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 117494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 117594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 117694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 117794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 117819803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 117994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 118094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 118294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 118394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 118494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 118694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 118794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1188095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1189095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee char config_user_path[PATH_MAX]; 1190095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1191095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 119260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 119360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1194095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1195095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1196095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee create_user_config_path(config_user_path, userid); 1197095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (fs_prepare_dir(config_user_path, 0750, uid, gid) == -1) { 1198095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 1199095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 1200095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1201095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 1202095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 120302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 120402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampeint wait_child(pid_t pid) 120502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe{ 120602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe int status; 120702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe pid_t got_pid; 120802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 120902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe while (1) { 121002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe got_pid = waitpid(pid, &status, 0); 121102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid == -1 && errno == EINTR) { 121202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe printf("waitpid interrupted, retrying\n"); 121302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 121402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe break; 121502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 121602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 121702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid != pid) { 121802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe ALOGW("waitpid failed: wanted %d, got %d: %s\n", 121902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe (int) pid, (int) got_pid, strerror(errno)); 122002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 1; 122102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 122202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 122302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { 122402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 0; 122502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 122602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return status; /* always nonzero */ 122702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 122802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} 122902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 123002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace installd 123102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace android 1232