utils.cpp revision 3dfae0c008576c873c4039bb4c2e54a6adf3720a
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> 213dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey#include <fts.h> 2202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <stdlib.h> 2302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/stat.h> 2402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/wait.h> 259a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#include <sys/xattr.h> 2602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 2702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#if defined(__APPLE__) 2802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/mount.h> 2902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#else 3002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/statfs.h> 3102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 3294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33a5e161b1207ef447a51e99856097d69d4a6111e1Mark Salyzyn#include <android/log.h> 34e4ec9eb7b4c452493589983970ba5ccc501728d1Elliott Hughes#include <android-base/logging.h> 3502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <android-base/stringprintf.h> 3602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/fs.h> 3702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <private/android_filesystem_config.h> 3802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 3902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "globals.h" // extern variables. 4094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#ifndef LOG_TAG 4202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#define LOG_TAG "installd" 4302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 449a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 45c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#define CACHE_NOISY(x) //x 469a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#define DEBUG_XATTRS 0 4794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 48c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyusing android::base::StringPrintf; 4994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 5002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace android { 5102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace installd { 5202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 5394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 54c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Check that given string is valid filename, and that it attempts no 55c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * parent or child directory traversal. 5694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 57423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkeybool is_valid_filename(const std::string& name) { 58c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (name.empty() || (name == ".") || (name == "..") 59c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey || (name.find('/') != std::string::npos)) { 60c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return false; 6194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 62c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return true; 6394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 6594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 666a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestatic void check_package_name(const char* package_name) { 676a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_filename(package_name)); 68423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey CHECK(is_valid_package_name(package_name)); 696a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 706a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 71c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey/** 72d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name where package app contents should be stored for 73d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * the given volume UUID and package name. An empty UUID is assumed to 74d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * be internal storage. 75d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 76d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_package_path(const char* volume_uuid, 77d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey const char* package_name) { 786a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 79d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 80d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_app_path(volume_uuid).c_str(), package_name); 81d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 82d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 83d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 84c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Create the path name where package data should be stored for the given 85c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * volume UUID, package name, and user ID. An empty UUID is assumed to be 86c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * internal storage. 87c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey */ 882f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, 89d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey userid_t user, const char* package_name) { 906a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 91d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 922f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey create_data_user_ce_path(volume_uuid, user).c_str(), package_name); 932f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey} 942f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 952f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, userid_t user, 962f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey const char* package_name, ino_t ce_data_inode) { 972f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // For testing purposes, rely on the inode when defined; this could be 982f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // optimized to use access() in the future. 992f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto fallback = create_data_user_ce_package_path(volume_uuid, user, package_name); 1002f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ce_data_inode != 0) { 1012f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto user_path = create_data_user_ce_path(volume_uuid, user); 1022f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey DIR* dir = opendir(user_path.c_str()); 1032f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (dir == nullptr) { 1042f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << user_path; 1052f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1062f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1072f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 1082f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey struct dirent* ent; 1092f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey while ((ent = readdir(dir))) { 1102f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ent->d_ino == ce_data_inode) { 1111d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey auto resolved = StringPrintf("%s/%s", user_path.c_str(), ent->d_name); 1129a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#if DEBUG_XATTRS 1131d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey if (resolved != fallback) { 1141d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(DEBUG) << "Resolved path " << resolved << " for inode " << ce_data_inode 1151d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey << " instead of " << fallback; 1161d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey } 1179a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#endif 1182f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1191d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey return resolved; 1202f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1212f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1221d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(WARNING) << "Failed to resolve inode " << ce_data_inode << "; using " << fallback; 1232f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1242f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1252f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } else { 1262f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1272f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 128c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 12994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 13063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_package_path(const char* volume_uuid, 13163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey userid_t user, const char* package_name) { 1326a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 13363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/%s", 13463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey create_data_user_de_path(volume_uuid, user).c_str(), package_name); 13563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 13663ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 137c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyint create_pkg_path(char path[PKG_PATH_MAX], const char *pkgname, 138c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char *postfix, userid_t userid) { 139423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey if (!is_valid_package_name(pkgname)) { 140c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 14194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 14294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 14394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1442f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey std::string _tmp(create_data_user_ce_package_path(nullptr, userid, pkgname) + postfix); 145c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* tmp = _tmp.c_str(); 146c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(tmp) >= PKG_PATH_MAX) { 147c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 148c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 149c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 150c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey strcpy(path, tmp); 151c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return 0; 15294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 15394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 15494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 15541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_path(const char* volume_uuid) { 15641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 15741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return "/data"; 15894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 15941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey CHECK(is_valid_filename(volume_uuid)); 16041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("/mnt/expand/%s", volume_uuid); 16194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 16241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey} 16394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 16441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey/** 165d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name for app data. 166d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 167d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_path(const char* volume_uuid) { 168d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/app", create_data_path(volume_uuid).c_str()); 169d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 170d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 171d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 17241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey * Create the path name for user data for a certain userid. 17341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey */ 1742f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_path(const char* volume_uuid, userid_t userid) { 17541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey std::string data(create_data_path(volume_uuid)); 17641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 17741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (userid == 0) { 17841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/data", data.c_str()); 17941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 18041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 18194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 18341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 18494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 18694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 18794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 18863ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey * Create the path name for device encrypted user data for a certain userid. 18963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey */ 19063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_path(const char* volume_uuid, userid_t userid) { 19163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey std::string data(create_data_path(volume_uuid)); 19263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/user_de/%u", data.c_str(), userid); 19363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 19463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 19563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey/** 196abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 19794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 19841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_media_path(const char* volume_uuid, userid_t userid) { 19941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/media/%u", create_data_path(volume_uuid).c_str(), userid); 20094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 20194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2023dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkeystd::string create_data_media_package_path(const char* volume_uuid, userid_t userid, 2033dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey const char* data_type, const char* package_name) { 2043dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey return StringPrintf("%s/Android/%s/%s", create_data_media_path(volume_uuid, userid).c_str(), 2053dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey data_type, package_name); 2063dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey} 2073dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey 208379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkeystd::string create_data_misc_legacy_path(userid_t userid) { 209379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return StringPrintf("%s/misc/user/%u", create_data_path(nullptr).c_str(), userid); 210379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey} 211379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey 2126a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profiles_path(userid_t userid) { 2136a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/cur/%u", android_profiles_dir.path, userid); 2146a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2156a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2166a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profile_package_path(userid_t user, const char* package_name) { 2176a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2186a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/%s",create_data_user_profiles_path(user).c_str(), package_name); 2196a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2206a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2216a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_ref_profile_package_path(const char* package_name) { 2226a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2236a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/ref/%s", android_profiles_dir.path, package_name); 2246a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2256a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2263dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkeystd::string create_data_dalvik_cache_path() { 2273dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey return "/data/dalvik-cache"; 2283dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey} 2293dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey 2303dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkeystd::string create_data_misc_foreign_dex_path(userid_t userid) { 2313dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey return StringPrintf("/data/misc/profiles/cur/%d/foreign-dex", userid); 2323dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey} 2333dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey 23490aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey// Keep profile paths in sync with ActivityThread. 23590aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkeyconstexpr const char* PRIMARY_PROFILE_NAME = "primary.prof"; 23690aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey 23790aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkeystd::string create_primary_profile(const std::string& profile_dir) { 23890aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey return StringPrintf("%s/%s", profile_dir.c_str(), PRIMARY_PROFILE_NAME); 23990aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey} 24090aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey 241e36372423000a906bafae68844ebc6c42d09335aJeff Sharkeystd::vector<userid_t> get_known_users(const char* volume_uuid) { 242e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::vector<userid_t> users; 243e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 244e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // We always have an owner 245e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(0); 246e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 247e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::string path(create_data_path(volume_uuid) + "/" + SECONDARY_USER_PREFIX); 248e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey DIR* dir = opendir(path.c_str()); 249e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (dir == NULL) { 250e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // Unable to discover other users, but at least return owner 251e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << path; 252e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 253e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 254e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 255e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey struct dirent* ent; 256e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey while ((ent = readdir(dir))) { 257e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (ent->d_type != DT_DIR) { 258e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey continue; 259e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 260e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 261e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey char* end; 262e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey userid_t user = strtol(ent->d_name, &end, 10); 263e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (*end == '\0' && user != 0) { 264e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey LOG(DEBUG) << "Found valid user " << user; 265e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(user); 266e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 267e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 268e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey closedir(dir); 269e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 270e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 271e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey} 272e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 2733dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkeyint calculate_tree_size(const std::string& path, int64_t* size, 2743dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey gid_t include_gid, gid_t exclude_gid) { 2753dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey FTS *fts; 2763dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey FTSENT *p; 2773dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey char *argv[] = { (char*) path.c_str(), nullptr }; 2783dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) { 2793dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey if (errno != ENOENT) { 2803dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey PLOG(ERROR) << "Failed to fts_open " << path; 2813dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey } 2823dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey return -1; 2833dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey } 2843dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey while ((p = fts_read(fts)) != NULL) { 2853dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey switch (p->fts_info) { 2863dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey case FTS_D: 2873dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey case FTS_DEFAULT: 2883dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey case FTS_F: 2893dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey case FTS_SL: 2903dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey case FTS_SLNONE: 2913dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey if (include_gid != 0 && p->fts_statp->st_gid != include_gid) { 2923dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey break; 2933dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey } 2943dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey if (exclude_gid != 0 && p->fts_statp->st_gid == exclude_gid) { 2953dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey break; 2963dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey } 2973dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey *size += (p->fts_statp->st_blocks * 512); 2983dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey break; 2993dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey } 3003dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey } 3013dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey fts_close(fts); 3023dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey return 0; 3033dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey} 3043dfae0c008576c873c4039bb4c2e54a6adf3720aJeff Sharkey 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 30802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe userid_t userid ATTRIBUTE_UNUSED) 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 31094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 32094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 32294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 323423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkeybool is_valid_package_name(const std::string& packageName) { 324423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey const char* pkgname = packageName.c_str(); 32594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 32694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 32794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 328c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(pkgname) > PKG_NAME_MAX) { 329423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 330c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 331c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 33294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 33394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 33494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 33594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 33694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 33794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 33894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 339423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 34094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 34294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 34394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 34494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 34594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 34694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 34794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 348423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 34994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 35194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 35294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 35494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 35594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 35694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 35794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 35894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 35994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 360423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 36194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 36394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 366423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return true; 36794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 36894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3693aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 3703aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 37194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 37294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 37394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 37494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 37594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 37694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 37794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 37894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 37994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 38094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 38194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 38294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3833aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 3843aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 3853aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 3863aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 38794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 38894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 38999d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh int subfd; 39094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 39194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 39294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 39394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 39494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 39594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 39694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 39794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3988b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 39994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 40094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 40194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 40294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 40394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 40494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 40594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 40694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 40794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 40894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 40994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 41094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 4113aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 41294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 41394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 41494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 41594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 41694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 41794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 41894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 41994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 42094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 42194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 42294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 42394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 42794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 42894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 42994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 430b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents(const std::string& pathname, bool ignore_if_missing) { 431b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 0, NULL, ignore_if_missing); 432ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 433ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 434b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing) { 435b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 1, NULL, ignore_if_missing); 436ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 437ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 43894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 43994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 440b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle int (*exclusion_predicate)(const char*, const int), 441b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle bool ignore_if_missing) 44294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 44394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 44494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 44594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 44694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 44794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 448b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle if (ignore_if_missing && (errno == ENOENT)) { 449b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return 0; 450b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle } 45194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 45294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 45394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 4543aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 45594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 45694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 45794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 45894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 45994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 46094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 46394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 46494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 46594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 46694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 46794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 46894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 46994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4708b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich fd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 47194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 47294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 47394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 47494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 47594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 47694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 47794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 47894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 47994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 48094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 48194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 48294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 48394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 48494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 48594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 48660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 48760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 48860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 48960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 49060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 49160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 49360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 49460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 49660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 49760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 49860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 49960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 50060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 50160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 50260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 50360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 50460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 50560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 50660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 50760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 50860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 50960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 51060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 51160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 51260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 51360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 51460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 51560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 51660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 51760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 51860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 51960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 52060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 52160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 52260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 52360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 52460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 52560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 52660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 52760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 52860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 52960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 53060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 53160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 53260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 53360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 53460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 53560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 53660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 53760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 53860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 53960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 54060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 54160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 54260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 54360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 54460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 54560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 54660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 54760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 54860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 54960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 55060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 55160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 55260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 55360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 55460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 55560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 55660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 55760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 55860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 55960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 56060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 56160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 56260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 56360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 56460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 56560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 56660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 56760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 56860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 56960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 57060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 57160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 57260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 57360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 57460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 57560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 57660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 57760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 57860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 57960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 58060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 58160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 58260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 58360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 58441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyint64_t data_disk_free(const std::string& data_path) 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 58741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (statfs(data_path.c_str(), &sfs) == 0) { 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 59041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey PLOG(ERROR) << "Couldn't statfs " << data_path; 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 59294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 6149a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %zu", res, len)); 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 62819803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey int8_t* newBlock = (int8_t*) malloc(CACHE_BLOCK_SIZE); 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 6399a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("cache_malloc: ret %p size %zu, block=%p, nextPos=%p", 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 65992dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 7179a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("Setting file %p at position %zd in array %p", file, 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7608b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 79594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 79694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 79794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 79894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 79994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 80094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 80194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 80294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 80494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 80594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 80694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 80894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 80994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 81094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 81194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 81294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 81394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 81494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 81594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 81694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 81794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 81894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 81994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 82094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 82194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 82494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 82594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 82694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 82794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 82894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 82994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 83094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 83194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 83294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 83694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 83794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 84094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 84194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 8429a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeyint get_path_inode(const std::string& path, ino_t *inode) { 8439a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey struct stat buf; 8449a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey memset(&buf, 0, sizeof(buf)); 8459a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (stat(path.c_str(), &buf) != 0) { 8469a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(WARNING) << "Failed to stat " << path; 8479a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return -1; 8489a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8499a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey *inode = buf.st_ino; 8509a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8519a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8529a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 8539a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8549a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey/** 8559a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * Write the inode of a specific child file into the given xattr on the 8569a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * parent directory. This allows you to find the child later, even if its 8579a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * name is encrypted. 8589a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey */ 8599a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeyint write_path_inode(const std::string& parent, const char* name, const char* inode_xattr) { 8609a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ino_t inode = 0; 8619a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey uint64_t inode_raw = 0; 8629a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto path = StringPrintf("%s/%s", parent.c_str(), name); 8639a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8649a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (get_path_inode(path, &inode) != 0) { 8659a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Path probably doesn't exist yet; ignore 8669a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8679a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8689a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8699a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Check to see if already set correctly 8709a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (getxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw)) == sizeof(inode_raw)) { 8719a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (inode_raw == inode) { 8729a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Already set correctly; skip writing 8739a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8749a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8759a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(WARNING) << "Mismatched inode value; found " << inode 8769a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey << " on disk but marked value was " << inode_raw << "; overwriting"; 8779a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8789a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8799a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8809a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey inode_raw = inode; 8814ed6507cfb4f0fae8567b42037e74a07f7dd28baJeff Sharkey if (setxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw), 0) != 0 && errno != EOPNOTSUPP) { 8829a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(ERROR) << "Failed to write xattr " << inode_xattr << " at " << parent; 8839a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return -1; 8849a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8859a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8869a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8879a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 8889a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8899a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey/** 8909a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * Read the inode of a specific child file from the given xattr on the 8919a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * parent directory. Returns a currently valid path for that child, which 8929a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * might have an encrypted name. 8939a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey */ 8949a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeystd::string read_path_inode(const std::string& parent, const char* name, const char* inode_xattr) { 8959a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ino_t inode = 0; 8969a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey uint64_t inode_raw = 0; 8979a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto fallback = StringPrintf("%s/%s", parent.c_str(), name); 8989a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8999a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Lookup the inode value written earlier 9009a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (getxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw)) == sizeof(inode_raw)) { 9019a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey inode = inode_raw; 9029a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 9039a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 9049a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // For testing purposes, rely on the inode when defined; this could be 9059a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // optimized to use access() in the future. 9069a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (inode != 0) { 9079a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey DIR* dir = opendir(parent.c_str()); 9089a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (dir == nullptr) { 9099a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(ERROR) << "Failed to opendir " << parent; 9109a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 9119a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 9129a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 9139a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey struct dirent* ent; 9149a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey while ((ent = readdir(dir))) { 9159a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (ent->d_ino == inode) { 9169a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto resolved = StringPrintf("%s/%s", parent.c_str(), ent->d_name); 9179a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#if DEBUG_XATTRS 9189a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (resolved != fallback) { 9199a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey LOG(DEBUG) << "Resolved path " << resolved << " for inode " << inode 9209a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey << " instead of " << fallback; 9219a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 9229a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#endif 9239a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey closedir(dir); 9249a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return resolved; 9259a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 9269a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 9279a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey LOG(WARNING) << "Failed to resolve inode " << inode << "; using " << fallback; 9289a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey closedir(dir); 9299a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 9309a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 9319a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 9329a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 9339a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 9349a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 93554e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkeyvoid add_cache_files(cache_t* cache, const std::string& data_path) { 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 93794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 93894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94054e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey const char* basepath = data_path.c_str(); 94154e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey CACHE_NOISY(ALOGI("add_cache_files: basepath=%s\n", basepath)); 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 94494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 94594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 95794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 9599a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto parent = StringPrintf("%s/%s", basepath, name); 9609a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto resolved = read_path_inode(parent, "cache", kXattrInodeCache); 9619a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey strcpy(dirname, resolved.c_str()); 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 96354e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 98394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 98594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 99094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 99194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 100294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 100894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 101294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 101394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 101494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 101594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 101794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 101894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 101994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 102094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 102194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 102294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 102394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 102494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 102694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 102794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 102894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 102994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 103094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 103194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyvoid clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size) 103394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 103494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 103594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 103694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 103794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103892dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 103994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 104094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 104294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 104494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 104794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 104894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 104994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 105094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 105494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 105594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 105694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 105741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (data_disk_free(data_path) > free_size) { 105894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 105994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 106094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 106194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 106294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 106394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 106494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 106594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 106694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 106794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 106894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 106994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 107094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 107194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 107294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 107394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 107494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 107694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 107799d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh CACHE_NOISY(size_t i;) 107894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 10799a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("clear_cache_files: %zu dirs, %zu files\n", cache->numDirs, cache->numFiles)); 108094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 108194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 108294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 10839a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ALOGI("dir #%zu: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 108594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 10889a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ALOGI("file #%zu: %p %s time=%d dir=%p\n", i, file, file->name, 108994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 109094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 109194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 109294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 109394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 109494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 109594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 109794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1102c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 1103c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 1104c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 1105c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 1106e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkeystatic int validate_path(const dir_rec_t* dir, const char* path, int maxSubdirs) { 1107c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 1108c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 1109c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1110c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 1111c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 1112c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 1113e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey if ((--maxSubdirs == 0) && strchr(subdir, '/') != NULL) { 1114c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 1115c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1116c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1117c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1118c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1119c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 1120c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 1121c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 1122c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1123c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1124c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1125c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 1126c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 1127c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1128c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 112994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 113094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 113194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 113294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 113394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 113494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 113694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 113794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 1138e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(android_system_dirs.dirs + i, path, 1); 113994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 114094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 114194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 114394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 114494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 114694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 114794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 114894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 114994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 115094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 115194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 115294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 115394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 115494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 115594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 115694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 115794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 115894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 115994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 116094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 116194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 116294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 116394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 116494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 116594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 116694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 116794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 116894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 116994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 117094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 117194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 117294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 117394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 117494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 117594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 117694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 117794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 117894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 117994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 118194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 118294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 118494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 118594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 118694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 118794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 118994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 119094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 119194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 119294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 119394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 119494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 119594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 119619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey rec->path = (char*) malloc(dst_size); 119794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 119894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 119994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 120094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 120194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 120294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 120394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 120494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 120594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 120694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 120794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 120894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 120994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 121094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 121194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 121294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 121394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 121494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 121594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 121694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 121794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 121894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 121994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 122094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 122194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 122294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 122394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 122494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 122594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 122694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 122794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 122894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 122994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 123094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1231d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * Check whether path points to a valid path for an APK file. The path must 1232d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * begin with a whitelisted prefix path and must be no deeper than |maxSubdirs| within 1233d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * that path. Returns -1 when an invalid path is encountered and 0 when a valid path 1234d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * is encountered. 123594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 1236d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathstatic int validate_apk_path_internal(const char *path, int maxSubdirs) { 1237c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 123894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1239c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 124094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1241c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 12425c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy } else if (!strncmp(path, android_app_ephemeral_dir.path, android_app_ephemeral_dir.len)) { 12435c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy dir = &android_app_ephemeral_dir; 124494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1245c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 1246e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey } else if (!strncmp(path, android_mnt_expand_dir.path, android_mnt_expand_dir.len)) { 1247e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey dir = &android_mnt_expand_dir; 1248d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath if (maxSubdirs < 2) { 1249d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath maxSubdirs = 2; 1250d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath } 125194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 125294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 125394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 125494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1255e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(dir, path, maxSubdirs); 125694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 125794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1258d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path(const char* path) { 1259d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 1 /* maxSubdirs */); 1260d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1261d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 1262d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path_subdirs(const char* path) { 1263d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 3 /* maxSubdirs */); 1264d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1265d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 126694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 126794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 126894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 126994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 127094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 127194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 127294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 127394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 127494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 127594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 127619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string2(const char *s1, const char *s2) { 127794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 127894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 127994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 128094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 128194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 128219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 128394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 128494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 128594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 128694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 128794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 128894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 128994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 129094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 129119803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string3(const char *s1, const char *s2, const char *s3) { 129294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 129394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 129494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 129594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 129694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 129794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 129819803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 129994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 130094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 130194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 130294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 130394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 130494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 130594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 130694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 130794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1308095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1309095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 131060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 131160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1312095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1313095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1314379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey auto path = create_data_misc_legacy_path(userid); 1315379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return fs_prepare_dir(path.c_str(), 0750, uid, gid); 1316095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 131702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 131802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampeint wait_child(pid_t pid) 131902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe{ 132002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe int status; 132102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe pid_t got_pid; 132202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 132302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe while (1) { 132402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe got_pid = waitpid(pid, &status, 0); 132502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid == -1 && errno == EINTR) { 132602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe printf("waitpid interrupted, retrying\n"); 132702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 132802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe break; 132902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 133002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 133102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid != pid) { 133202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe ALOGW("waitpid failed: wanted %d, got %d: %s\n", 133302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe (int) pid, (int) got_pid, strerror(errno)); 133402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 1; 133502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 133602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 133702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { 133802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 0; 133902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 134002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return status; /* always nonzero */ 134102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 134202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} 134302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 134402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace installd 134502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace android 1346