utils.cpp revision 4ed6507cfb4f0fae8567b42037e74a07f7dd28ba
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> 249a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#include <sys/xattr.h> 2502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 2602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#if defined(__APPLE__) 2702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/mount.h> 2802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#else 2902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/statfs.h> 3002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 3194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32e4ec9eb7b4c452493589983970ba5ccc501728d1Elliott Hughes#include <android-base/logging.h> 3302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <android-base/stringprintf.h> 3402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/fs.h> 3502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/log.h> 3602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <private/android_filesystem_config.h> 3702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 3802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "globals.h" // extern variables. 3994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#ifndef LOG_TAG 4102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#define LOG_TAG "installd" 4202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 439a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 44c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#define CACHE_NOISY(x) //x 459a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#define DEBUG_XATTRS 0 4694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyusing android::base::StringPrintf; 4894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace android { 5002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace installd { 5102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 5294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 53c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Check that given string is valid filename, and that it attempts no 54c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * parent or child directory traversal. 5594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 56c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeystatic bool is_valid_filename(const std::string& name) { 57c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (name.empty() || (name == ".") || (name == "..") 58c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey || (name.find('/') != std::string::npos)) { 59c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return false; 6094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 61c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return true; 6294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 6494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 656a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestatic void check_package_name(const char* package_name) { 666a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_filename(package_name)); 676a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_package_name(package_name) == 0); 686a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 696a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 70c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey/** 71d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name where package app contents should be stored for 72d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * the given volume UUID and package name. An empty UUID is assumed to 73d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * be internal storage. 74d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 75d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_package_path(const char* volume_uuid, 76d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey const char* package_name) { 776a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 78d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 79d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_app_path(volume_uuid).c_str(), package_name); 80d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 81d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 82d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 83c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Create the path name where package data should be stored for the given 84c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * volume UUID, package name, and user ID. An empty UUID is assumed to be 85c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * internal storage. 86c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey */ 872f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, 88d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey userid_t user, const char* package_name) { 896a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 90d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 912f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey create_data_user_ce_path(volume_uuid, user).c_str(), package_name); 922f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey} 932f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 942f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, userid_t user, 952f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey const char* package_name, ino_t ce_data_inode) { 962f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // For testing purposes, rely on the inode when defined; this could be 972f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // optimized to use access() in the future. 982f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto fallback = create_data_user_ce_package_path(volume_uuid, user, package_name); 992f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ce_data_inode != 0) { 1002f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto user_path = create_data_user_ce_path(volume_uuid, user); 1012f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey DIR* dir = opendir(user_path.c_str()); 1022f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (dir == nullptr) { 1032f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << user_path; 1042f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1052f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1062f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 1072f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey struct dirent* ent; 1082f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey while ((ent = readdir(dir))) { 1092f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ent->d_ino == ce_data_inode) { 1101d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey auto resolved = StringPrintf("%s/%s", user_path.c_str(), ent->d_name); 1119a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#if DEBUG_XATTRS 1121d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey if (resolved != fallback) { 1131d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(DEBUG) << "Resolved path " << resolved << " for inode " << ce_data_inode 1141d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey << " instead of " << fallback; 1151d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey } 1169a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#endif 1172f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1181d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey return resolved; 1192f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1202f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1211d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(WARNING) << "Failed to resolve inode " << ce_data_inode << "; using " << fallback; 1222f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1232f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1242f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } else { 1252f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1262f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 127c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 12894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 12963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_package_path(const char* volume_uuid, 13063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey userid_t user, const char* package_name) { 1316a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 13263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/%s", 13363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey create_data_user_de_path(volume_uuid, user).c_str(), package_name); 13463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 13563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 136c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyint create_pkg_path(char path[PKG_PATH_MAX], const char *pkgname, 137c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char *postfix, userid_t userid) { 138c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (is_valid_package_name(pkgname) != 0) { 139c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 14094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 14194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 14294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1432f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey std::string _tmp(create_data_user_ce_package_path(nullptr, userid, pkgname) + postfix); 144c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* tmp = _tmp.c_str(); 145c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(tmp) >= PKG_PATH_MAX) { 146c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 147c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 148c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 149c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey strcpy(path, tmp); 150c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return 0; 15194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 15294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 15394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 15441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_path(const char* volume_uuid) { 15541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 15641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return "/data"; 15794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 15841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey CHECK(is_valid_filename(volume_uuid)); 15941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("/mnt/expand/%s", volume_uuid); 16094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 16141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey} 16294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 16341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey/** 164d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name for app data. 165d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 166d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_path(const char* volume_uuid) { 167d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/app", create_data_path(volume_uuid).c_str()); 168d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 169d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 170d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 17141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey * Create the path name for user data for a certain userid. 17241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey */ 1732f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_path(const char* volume_uuid, userid_t userid) { 17441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey std::string data(create_data_path(volume_uuid)); 17541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 17641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (userid == 0) { 17741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/data", data.c_str()); 17841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 17941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 18094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 18241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 18394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 18594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 18694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 18763ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey * Create the path name for device encrypted user data for a certain userid. 18863ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey */ 18963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_path(const char* volume_uuid, userid_t userid) { 19063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey std::string data(create_data_path(volume_uuid)); 19163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/user_de/%u", data.c_str(), userid); 19263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 19363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 19463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey/** 195abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 19694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 19741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_media_path(const char* volume_uuid, userid_t userid) { 19841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/media/%u", create_data_path(volume_uuid).c_str(), userid); 19994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 20094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 201379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkeystd::string create_data_misc_legacy_path(userid_t userid) { 202379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return StringPrintf("%s/misc/user/%u", create_data_path(nullptr).c_str(), userid); 203379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey} 204379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey 2056a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profiles_path(userid_t userid) { 2066a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/cur/%u", android_profiles_dir.path, userid); 2076a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2086a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2096a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profile_package_path(userid_t user, const char* package_name) { 2106a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2116a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/%s",create_data_user_profiles_path(user).c_str(), package_name); 2126a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2136a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2146a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_ref_profile_package_path(const char* package_name) { 2156a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2166a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/ref/%s", android_profiles_dir.path, package_name); 2176a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2186a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 219e36372423000a906bafae68844ebc6c42d09335aJeff Sharkeystd::vector<userid_t> get_known_users(const char* volume_uuid) { 220e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::vector<userid_t> users; 221e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 222e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // We always have an owner 223e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(0); 224e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 225e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::string path(create_data_path(volume_uuid) + "/" + SECONDARY_USER_PREFIX); 226e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey DIR* dir = opendir(path.c_str()); 227e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (dir == NULL) { 228e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // Unable to discover other users, but at least return owner 229e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << path; 230e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 231e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 232e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 233e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey struct dirent* ent; 234e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey while ((ent = readdir(dir))) { 235e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (ent->d_type != DT_DIR) { 236e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey continue; 237e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 238e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 239e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey char* end; 240e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey userid_t user = strtol(ent->d_name, &end, 10); 241e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (*end == '\0' && user != 0) { 242e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey LOG(DEBUG) << "Found valid user " << user; 243e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(user); 244e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 245e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 246e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey closedir(dir); 247e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 248e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 249e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey} 250e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 25194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 25294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 25394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 25402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe userid_t userid ATTRIBUTE_UNUSED) 25594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 25694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 25794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 26294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 26394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 26494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 26794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 26894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 26994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint is_valid_package_name(const char* pkgname) { 27094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 27194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 27294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 273c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(pkgname) > PKG_NAME_MAX) { 274c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 275c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 276c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 27794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 28194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 28294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 28394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 28494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 28594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 28994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 29294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 29794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 30094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 30194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 30394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3143aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 3153aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 31994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 32094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 32294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 32494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 32694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 32794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3283aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 3293aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 3303aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 3313aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 33294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 33499d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh int subfd; 33594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 33694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 33894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 33994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 34094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 34194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3438b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 34494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 34594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 34694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 34794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 34894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 35094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 35194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 35294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 35394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 35494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 35594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3563aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 35794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 35894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 36094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 36194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 36294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 36394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 36594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 36694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 36794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 36894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 37294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 37394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 37494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 375b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents(const std::string& pathname, bool ignore_if_missing) { 376b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 0, NULL, ignore_if_missing); 377ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 378ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 379b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing) { 380b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 1, NULL, ignore_if_missing); 381ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 382ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 38394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 38494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 385b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle int (*exclusion_predicate)(const char*, const int), 386b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle bool ignore_if_missing) 38794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 38894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 38994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 39094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 39194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 39294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 393b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle if (ignore_if_missing && (errno == ENOENT)) { 394b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return 0; 395b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle } 39694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 39794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 39894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3993aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 40094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 40194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 40294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 40394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 40494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 40594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 40694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 40794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 40894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 40994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 41094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 41194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 41294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 41394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 41494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4158b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich fd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 41694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 41794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 41894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 41994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 42194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 42294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 42394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 42494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 42594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 42794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 42894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 42994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 43094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 43160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 43260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 43360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 43460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 43560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 43660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 43760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 43860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 43960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 44160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 44260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 44360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 44460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 44560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 44660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 44760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 44860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 45060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 45160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 45360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 45460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 45560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 45660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 45760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 45960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 46060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 46160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 46260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 46360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 46460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 46560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 46660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 46760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 46860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 46960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 47060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 47160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 47260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 47360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 47460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 47560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 47660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 47760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 47860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 47960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 48060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 48160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 48360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 48460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 48560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 48860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 48960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 49160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 49260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 49360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 49460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 49560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 49660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 49760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 49860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 49960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 50060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 50160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 50260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 50360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 50460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 50560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 50660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 50760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 50860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 50960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 51060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 51160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 51260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 51360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 51460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 51560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 51660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 51760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 51860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 51960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 52060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 52160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 52260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 52360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 52460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 52560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 52660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 52760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 52860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 52941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyint64_t data_disk_free(const std::string& data_path) 53094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 53194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 53241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (statfs(data_path.c_str(), &sfs) == 0) { 53394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 53494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 53541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey PLOG(ERROR) << "Couldn't statfs " << data_path; 53694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 53794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 54394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 54494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 55094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 55194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 55494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 5599a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %zu", res, len)); 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 56794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 57319803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey int8_t* newBlock = (int8_t*) malloc(CACHE_BLOCK_SIZE); 57494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 57594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 58094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 58194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 5849a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("cache_malloc: ret %p size %zu, block=%p, nextPos=%p", 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 59294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 60492dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 6629a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("Setting file %p at position %zd in array %p", file, 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7058b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7879a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeyint get_path_inode(const std::string& path, ino_t *inode) { 7889a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey struct stat buf; 7899a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey memset(&buf, 0, sizeof(buf)); 7909a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (stat(path.c_str(), &buf) != 0) { 7919a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(WARNING) << "Failed to stat " << path; 7929a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return -1; 7939a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 7949a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey *inode = buf.st_ino; 7959a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 7969a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 7979a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 7989a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 7999a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey/** 8009a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * Write the inode of a specific child file into the given xattr on the 8019a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * parent directory. This allows you to find the child later, even if its 8029a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * name is encrypted. 8039a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey */ 8049a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeyint write_path_inode(const std::string& parent, const char* name, const char* inode_xattr) { 8059a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ino_t inode = 0; 8069a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey uint64_t inode_raw = 0; 8079a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto path = StringPrintf("%s/%s", parent.c_str(), name); 8089a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8099a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (get_path_inode(path, &inode) != 0) { 8109a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Path probably doesn't exist yet; ignore 8119a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8129a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8139a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8149a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Check to see if already set correctly 8159a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (getxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw)) == sizeof(inode_raw)) { 8169a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (inode_raw == inode) { 8179a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Already set correctly; skip writing 8189a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8199a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8209a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(WARNING) << "Mismatched inode value; found " << inode 8219a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey << " on disk but marked value was " << inode_raw << "; overwriting"; 8229a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8239a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8249a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8259a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey inode_raw = inode; 8264ed6507cfb4f0fae8567b42037e74a07f7dd28baJeff Sharkey if (setxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw), 0) != 0 && errno != EOPNOTSUPP) { 8279a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(ERROR) << "Failed to write xattr " << inode_xattr << " at " << parent; 8289a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return -1; 8299a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8309a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8319a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8329a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 8339a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8349a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey/** 8359a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * Read the inode of a specific child file from the given xattr on the 8369a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * parent directory. Returns a currently valid path for that child, which 8379a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * might have an encrypted name. 8389a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey */ 8399a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeystd::string read_path_inode(const std::string& parent, const char* name, const char* inode_xattr) { 8409a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ino_t inode = 0; 8419a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey uint64_t inode_raw = 0; 8429a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto fallback = StringPrintf("%s/%s", parent.c_str(), name); 8439a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8449a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Lookup the inode value written earlier 8459a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (getxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw)) == sizeof(inode_raw)) { 8469a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey inode = inode_raw; 8479a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8489a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8499a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // For testing purposes, rely on the inode when defined; this could be 8509a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // optimized to use access() in the future. 8519a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (inode != 0) { 8529a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey DIR* dir = opendir(parent.c_str()); 8539a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (dir == nullptr) { 8549a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(ERROR) << "Failed to opendir " << parent; 8559a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 8569a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8579a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8589a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey struct dirent* ent; 8599a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey while ((ent = readdir(dir))) { 8609a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (ent->d_ino == inode) { 8619a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto resolved = StringPrintf("%s/%s", parent.c_str(), ent->d_name); 8629a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#if DEBUG_XATTRS 8639a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (resolved != fallback) { 8649a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey LOG(DEBUG) << "Resolved path " << resolved << " for inode " << inode 8659a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey << " instead of " << fallback; 8669a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8679a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#endif 8689a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey closedir(dir); 8699a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return resolved; 8709a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8719a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8729a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey LOG(WARNING) << "Failed to resolve inode " << inode << "; using " << fallback; 8739a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey closedir(dir); 8749a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 8759a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8769a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 8779a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8789a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 8799a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 88054e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkeyvoid add_cache_files(cache_t* cache, const std::string& data_path) { 88194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 88294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 88394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 88494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88554e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey const char* basepath = data_path.c_str(); 88654e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey CACHE_NOISY(ALOGI("add_cache_files: basepath=%s\n", basepath)); 88794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 88994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 89394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 89494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 89694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 89794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 89894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 89994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 90094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 90194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 90294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 9049a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto parent = StringPrintf("%s/%s", basepath, name); 9059a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto resolved = read_path_inode(parent, "cache", kXattrInodeCache); 9069a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey strcpy(dirname, resolved.c_str()); 90794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 90854e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey 90994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 91094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 91194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 91294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 91394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 91494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 91594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 91694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 91794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 91894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 91994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 92094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 92194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 92294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 92394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 92494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 92594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 92694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 92794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 92894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 92994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 93094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 93194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 93294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 93394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 93494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 93594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 93794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 93894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 94094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 94194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 94494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 94594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 95794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 95994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 96094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 96394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyvoid clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size) 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98392dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 98594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 99194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 100241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (data_disk_free(data_path) > free_size) { 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 100494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 100894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 101094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 101194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 101294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 101494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 101594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 101694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 101994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 102194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 102299d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh CACHE_NOISY(size_t i;) 102394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 10249a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("clear_cache_files: %zu dirs, %zu files\n", cache->numDirs, cache->numFiles)); 102594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 102694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 102794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 10289a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ALOGI("dir #%zu: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 102994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 103094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 103194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 103294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 10339a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ALOGI("file #%zu: %p %s time=%d dir=%p\n", i, file, file->name, 103494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 103594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 103694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 103794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 103894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 103994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 104094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 104194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 104294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 104494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1047c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 1048c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 1049c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 1050c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 1051e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkeystatic int validate_path(const dir_rec_t* dir, const char* path, int maxSubdirs) { 1052c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 1053c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 1054c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1055c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 1056c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 1057c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 1058e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey if ((--maxSubdirs == 0) && strchr(subdir, '/') != NULL) { 1059c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 1060c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1061c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1062c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1063c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1064c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 1065c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 1066c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 1067c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1068c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1069c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1070c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 1071c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 1072c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1073c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 107494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 107594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 107694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 107794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 107894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 107994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 108194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 108294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 1083e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(android_system_dirs.dirs + i, path, 1); 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 108594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 108894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 108994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 109194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 109294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 109394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 109494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 109594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 109794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 110294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 110394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 110594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 110694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 110794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 110894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 110994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 111094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 111194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 111294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 111394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 111494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 111594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 111694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 111794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 111894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 111994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 112194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 112294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 112394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 112494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 112694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 112794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 112994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 113094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 113194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 113294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 113494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 113594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 113694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 113794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 113994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 114094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114119803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey rec->path = (char*) malloc(dst_size); 114294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 114394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 114494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 114594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 114794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 114994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 115094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 115194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 115294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 115394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 115494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 115594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 115694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 115794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 115894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 115994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 116094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 116194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 116294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 116394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 116494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 116594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 116694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 116794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 116894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 116994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 117094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 117194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 117294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 117394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 117494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 117594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1176d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * Check whether path points to a valid path for an APK file. The path must 1177d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * begin with a whitelisted prefix path and must be no deeper than |maxSubdirs| within 1178d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * that path. Returns -1 when an invalid path is encountered and 0 when a valid path 1179d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * is encountered. 118094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 1181d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathstatic int validate_apk_path_internal(const char *path, int maxSubdirs) { 1182c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 118394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1184c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 118594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1186c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 11875c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy } else if (!strncmp(path, android_app_ephemeral_dir.path, android_app_ephemeral_dir.len)) { 11885c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy dir = &android_app_ephemeral_dir; 118994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1190c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 1191e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey } else if (!strncmp(path, android_mnt_expand_dir.path, android_mnt_expand_dir.len)) { 1192e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey dir = &android_mnt_expand_dir; 1193d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath if (maxSubdirs < 2) { 1194d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath maxSubdirs = 2; 1195d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath } 119694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 119794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 119894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 119994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1200e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(dir, path, maxSubdirs); 120194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 120294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1203d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path(const char* path) { 1204d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 1 /* maxSubdirs */); 1205d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1206d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 1207d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path_subdirs(const char* path) { 1208d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 3 /* maxSubdirs */); 1209d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1210d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 121194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 121294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 121394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 121494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 121594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 121694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 121794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 121894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 121994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 122094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 122119803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string2(const char *s1, const char *s2) { 122294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 122394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 122494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 122594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 122694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 122719803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 122894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 122994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 123094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 123194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 123294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 123394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 123494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 123594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 123619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string3(const char *s1, const char *s2, const char *s3) { 123794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 123894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 123994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 124094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 124194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 124294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 124319803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 124494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 124594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 124694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 124794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 124894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 124994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 125094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 125194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 125294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1253095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1254095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 125560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 125660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1257095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1258095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1259379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey auto path = create_data_misc_legacy_path(userid); 1260379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return fs_prepare_dir(path.c_str(), 0750, uid, gid); 1261095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 126202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 126302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampeint wait_child(pid_t pid) 126402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe{ 126502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe int status; 126602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe pid_t got_pid; 126702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 126802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe while (1) { 126902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe got_pid = waitpid(pid, &status, 0); 127002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid == -1 && errno == EINTR) { 127102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe printf("waitpid interrupted, retrying\n"); 127202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 127302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe break; 127402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 127502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 127602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid != pid) { 127702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe ALOGW("waitpid failed: wanted %d, got %d: %s\n", 127802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe (int) pid, (int) got_pid, strerror(errno)); 127902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 1; 128002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 128102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 128202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { 128302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 0; 128402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 128502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return status; /* always nonzero */ 128602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 128702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} 128802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 128902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace installd 129002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace android 1291