utils.cpp revision 90aff26f0135379db19432ae90c40c0831ba5954
194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/* 294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** Copyright 2008, The Android Open Source Project 394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 4d93707342a61e66bc3eb2145628158452f577f42Dave Allison** Licensed under the Apache License, Version 2.0 (the "License"); 5d93707342a61e66bc3eb2145628158452f577f42Dave Allison** you may not use this file except in compliance with the License. 6d93707342a61e66bc3eb2145628158452f577f42Dave Allison** You may obtain a copy of the License at 794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 8d93707342a61e66bc3eb2145628158452f577f42Dave Allison** http://www.apache.org/licenses/LICENSE-2.0 994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 10d93707342a61e66bc3eb2145628158452f577f42Dave Allison** Unless required by applicable law or agreed to in writing, software 11d93707342a61e66bc3eb2145628158452f577f42Dave Allison** distributed under the License is distributed on an "AS IS" BASIS, 12d93707342a61e66bc3eb2145628158452f577f42Dave Allison** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13d93707342a61e66bc3eb2145628158452f577f42Dave Allison** See the License for the specific language governing permissions and 1494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** limitations under the License. 1594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood*/ 1694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "utils.h" 1802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 1902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <errno.h> 2002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <fcntl.h> 2102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <stdlib.h> 2202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/stat.h> 2302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/wait.h> 249a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#include <sys/xattr.h> 2502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 2602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#if defined(__APPLE__) 2702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/mount.h> 2802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#else 2902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/statfs.h> 3002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 3194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32e4ec9eb7b4c452493589983970ba5ccc501728d1Elliott Hughes#include <android-base/logging.h> 3302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <android-base/stringprintf.h> 3402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/fs.h> 3502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/log.h> 3602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <private/android_filesystem_config.h> 3702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 3802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "globals.h" // extern variables. 3994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#ifndef LOG_TAG 4102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#define LOG_TAG "installd" 4202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 439a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 44c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#define CACHE_NOISY(x) //x 459a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#define DEBUG_XATTRS 0 4694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyusing android::base::StringPrintf; 4894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace android { 5002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace installd { 5102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 5294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 53c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Check that given string is valid filename, and that it attempts no 54c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * parent or child directory traversal. 5594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 56423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkeybool is_valid_filename(const std::string& name) { 57c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (name.empty() || (name == ".") || (name == "..") 58c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey || (name.find('/') != std::string::npos)) { 59c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return false; 6094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 61c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return true; 6294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 6494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 656a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestatic void check_package_name(const char* package_name) { 666a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_filename(package_name)); 67423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey CHECK(is_valid_package_name(package_name)); 686a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 696a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 70c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey/** 71d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name where package app contents should be stored for 72d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * the given volume UUID and package name. An empty UUID is assumed to 73d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * be internal storage. 74d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 75d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_package_path(const char* volume_uuid, 76d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey const char* package_name) { 776a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 78d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 79d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_app_path(volume_uuid).c_str(), package_name); 80d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 81d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 82d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 83c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Create the path name where package data should be stored for the given 84c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * volume UUID, package name, and user ID. An empty UUID is assumed to be 85c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * internal storage. 86c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey */ 872f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, 88d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey userid_t user, const char* package_name) { 896a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 90d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 912f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey create_data_user_ce_path(volume_uuid, user).c_str(), package_name); 922f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey} 932f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 942f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, userid_t user, 952f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey const char* package_name, ino_t ce_data_inode) { 962f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // For testing purposes, rely on the inode when defined; this could be 972f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // optimized to use access() in the future. 982f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto fallback = create_data_user_ce_package_path(volume_uuid, user, package_name); 992f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ce_data_inode != 0) { 1002f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto user_path = create_data_user_ce_path(volume_uuid, user); 1012f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey DIR* dir = opendir(user_path.c_str()); 1022f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (dir == nullptr) { 1032f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << user_path; 1042f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1052f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1062f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 1072f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey struct dirent* ent; 1082f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey while ((ent = readdir(dir))) { 1092f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ent->d_ino == ce_data_inode) { 1101d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey auto resolved = StringPrintf("%s/%s", user_path.c_str(), ent->d_name); 1119a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#if DEBUG_XATTRS 1121d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey if (resolved != fallback) { 1131d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(DEBUG) << "Resolved path " << resolved << " for inode " << ce_data_inode 1141d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey << " instead of " << fallback; 1151d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey } 1169a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#endif 1172f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1181d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey return resolved; 1192f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1202f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1211d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(WARNING) << "Failed to resolve inode " << ce_data_inode << "; using " << fallback; 1222f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1232f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1242f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } else { 1252f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1262f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 127c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 12894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 12963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_package_path(const char* volume_uuid, 13063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey userid_t user, const char* package_name) { 1316a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 13263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/%s", 13363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey create_data_user_de_path(volume_uuid, user).c_str(), package_name); 13463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 13563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 136c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyint create_pkg_path(char path[PKG_PATH_MAX], const char *pkgname, 137c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char *postfix, userid_t userid) { 138423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey if (!is_valid_package_name(pkgname)) { 139c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 14094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 14194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 14294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1432f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey std::string _tmp(create_data_user_ce_package_path(nullptr, userid, pkgname) + postfix); 144c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* tmp = _tmp.c_str(); 145c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(tmp) >= PKG_PATH_MAX) { 146c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 147c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 148c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 149c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey strcpy(path, tmp); 150c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return 0; 15194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 15294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 15394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 15441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_path(const char* volume_uuid) { 15541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 15641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return "/data"; 15794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 15841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey CHECK(is_valid_filename(volume_uuid)); 15941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("/mnt/expand/%s", volume_uuid); 16094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 16141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey} 16294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 16341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey/** 164d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name for app data. 165d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 166d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_path(const char* volume_uuid) { 167d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/app", create_data_path(volume_uuid).c_str()); 168d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 169d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 170d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 17141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey * Create the path name for user data for a certain userid. 17241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey */ 1732f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_path(const char* volume_uuid, userid_t userid) { 17441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey std::string data(create_data_path(volume_uuid)); 17541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 17641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (userid == 0) { 17741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/data", data.c_str()); 17841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 17941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 18094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 18241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 18394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 18594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 18694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 18763ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey * Create the path name for device encrypted user data for a certain userid. 18863ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey */ 18963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_path(const char* volume_uuid, userid_t userid) { 19063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey std::string data(create_data_path(volume_uuid)); 19163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/user_de/%u", data.c_str(), userid); 19263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 19363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 19463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey/** 195abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 19694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 19741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_media_path(const char* volume_uuid, userid_t userid) { 19841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/media/%u", create_data_path(volume_uuid).c_str(), userid); 19994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 20094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 201379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkeystd::string create_data_misc_legacy_path(userid_t userid) { 202379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return StringPrintf("%s/misc/user/%u", create_data_path(nullptr).c_str(), userid); 203379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey} 204379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey 2056a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profiles_path(userid_t userid) { 2066a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/cur/%u", android_profiles_dir.path, userid); 2076a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2086a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2096a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profile_package_path(userid_t user, const char* package_name) { 2106a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2116a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/%s",create_data_user_profiles_path(user).c_str(), package_name); 2126a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2136a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2146a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_ref_profile_package_path(const char* package_name) { 2156a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2166a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/ref/%s", android_profiles_dir.path, package_name); 2176a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2186a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 21990aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey// Keep profile paths in sync with ActivityThread. 22090aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkeyconstexpr const char* PRIMARY_PROFILE_NAME = "primary.prof"; 22190aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey 22290aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkeystd::string create_primary_profile(const std::string& profile_dir) { 22390aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey return StringPrintf("%s/%s", profile_dir.c_str(), PRIMARY_PROFILE_NAME); 22490aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey} 22590aff26f0135379db19432ae90c40c0831ba5954Jeff Sharkey 226e36372423000a906bafae68844ebc6c42d09335aJeff Sharkeystd::vector<userid_t> get_known_users(const char* volume_uuid) { 227e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::vector<userid_t> users; 228e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 229e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // We always have an owner 230e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(0); 231e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 232e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::string path(create_data_path(volume_uuid) + "/" + SECONDARY_USER_PREFIX); 233e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey DIR* dir = opendir(path.c_str()); 234e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (dir == NULL) { 235e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // Unable to discover other users, but at least return owner 236e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << path; 237e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 238e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 239e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 240e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey struct dirent* ent; 241e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey while ((ent = readdir(dir))) { 242e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (ent->d_type != DT_DIR) { 243e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey continue; 244e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 245e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 246e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey char* end; 247e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey userid_t user = strtol(ent->d_name, &end, 10); 248e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (*end == '\0' && user != 0) { 249e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey LOG(DEBUG) << "Found valid user " << user; 250e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(user); 251e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 252e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 253e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey closedir(dir); 254e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 255e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 256e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey} 257e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 26102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe userid_t userid ATTRIBUTE_UNUSED) 26294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 26394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 26494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 26994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 27094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 27194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 27294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 27394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 27494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 27594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 276423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkeybool is_valid_package_name(const std::string& packageName) { 277423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey const char* pkgname = packageName.c_str(); 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 281c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(pkgname) > PKG_NAME_MAX) { 282423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 283c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 284c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 28594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 28994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 292423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 29594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 29794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 29894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 29994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 30094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 301423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 31094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 313423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return false; 31494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 319423e746ac7d4b3a3d772dd0e01bdb9fd6029d439Jeff Sharkey return true; 32094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3223aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 3233aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 32494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 32594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 32694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 32794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 32894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 33094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 33294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 33494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 33594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3363aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 3373aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 3383aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 3393aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 34094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 34194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 34299d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh int subfd; 34394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 34494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 34594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 34694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 34794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 34894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 34994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3518b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 35294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 35394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 35494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 35594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 35694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 35894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 35994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 36094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 36194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 36294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 36394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3643aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 36594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 36694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 36894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 36994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 37094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 37194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 37394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 37494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 37594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 37694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 38094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 38194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 38294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 383b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents(const std::string& pathname, bool ignore_if_missing) { 384b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 0, NULL, ignore_if_missing); 385ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 386ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 387b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing) { 388b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 1, NULL, ignore_if_missing); 389ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 390ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 39194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 39294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 393b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle int (*exclusion_predicate)(const char*, const int), 394b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle bool ignore_if_missing) 39594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 39694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 39794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 39894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 39994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 40094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 401b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle if (ignore_if_missing && (errno == ENOENT)) { 402b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return 0; 403b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle } 40494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 40594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 40694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 4073aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 40894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 40994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 41094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 41194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 41294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 41394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 41494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 41594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 41694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 41794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 41894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 41994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 42094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 42194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 42294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4238b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich fd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 42494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 42594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 42694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 42794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 42994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 43094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 43194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 43294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 43394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 43494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 43594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 43694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 43794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 43894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 43960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 44060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 44160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 44260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 44360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 44460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 44660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 44760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 44960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 45060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 45160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 45260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 45360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 45460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 45560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 45660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 45860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 45960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 46060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 46160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 46260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 46360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 46460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 46560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 46660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 46760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 46860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 46960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 47060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 47160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 47260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 47360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 47460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 47560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 47660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 47760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 47860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 47960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 48060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 48260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 48360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 48560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 48660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 48760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 48860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 48960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 49160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 49260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 49360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 49660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 49760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 49860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 49960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 50060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 50160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 50260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 50360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 50460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 50560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 50660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 50760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 50860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 50960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 51060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 51160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 51260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 51360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 51460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 51560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 51660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 51760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 51860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 51960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 52060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 52160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 52260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 52360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 52460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 52560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 52660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 52760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 52860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 52960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 53060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 53160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 53260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 53360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 53460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 53560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 53660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 53741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyint64_t data_disk_free(const std::string& data_path) 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 54041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (statfs(data_path.c_str(), &sfs) == 0) { 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 54341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey PLOG(ERROR) << "Couldn't statfs " << data_path; 54494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 55094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 55194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 55494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 55994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 5679a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %zu", res, len)); 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 57394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 57494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 57594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 57794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 58094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 58119803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey int8_t* newBlock = (int8_t*) malloc(CACHE_BLOCK_SIZE); 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 58494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 5929a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("cache_malloc: ret %p size %zu, block=%p, nextPos=%p", 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 61292dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 6709a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("Setting file %p at position %zd in array %p", file, 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7138b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7959a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeyint get_path_inode(const std::string& path, ino_t *inode) { 7969a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey struct stat buf; 7979a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey memset(&buf, 0, sizeof(buf)); 7989a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (stat(path.c_str(), &buf) != 0) { 7999a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(WARNING) << "Failed to stat " << path; 8009a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return -1; 8019a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8029a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey *inode = buf.st_ino; 8039a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8049a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8059a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 8069a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8079a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey/** 8089a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * Write the inode of a specific child file into the given xattr on the 8099a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * parent directory. This allows you to find the child later, even if its 8109a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * name is encrypted. 8119a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey */ 8129a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeyint write_path_inode(const std::string& parent, const char* name, const char* inode_xattr) { 8139a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ino_t inode = 0; 8149a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey uint64_t inode_raw = 0; 8159a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto path = StringPrintf("%s/%s", parent.c_str(), name); 8169a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8179a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (get_path_inode(path, &inode) != 0) { 8189a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Path probably doesn't exist yet; ignore 8199a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8209a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8219a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8229a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Check to see if already set correctly 8239a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (getxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw)) == sizeof(inode_raw)) { 8249a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (inode_raw == inode) { 8259a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Already set correctly; skip writing 8269a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8279a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8289a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(WARNING) << "Mismatched inode value; found " << inode 8299a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey << " on disk but marked value was " << inode_raw << "; overwriting"; 8309a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8319a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8329a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8339a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey inode_raw = inode; 8344ed6507cfb4f0fae8567b42037e74a07f7dd28baJeff Sharkey if (setxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw), 0) != 0 && errno != EOPNOTSUPP) { 8359a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(ERROR) << "Failed to write xattr " << inode_xattr << " at " << parent; 8369a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return -1; 8379a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8389a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return 0; 8399a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8409a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 8419a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8429a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey/** 8439a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * Read the inode of a specific child file from the given xattr on the 8449a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * parent directory. Returns a currently valid path for that child, which 8459a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey * might have an encrypted name. 8469a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey */ 8479a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkeystd::string read_path_inode(const std::string& parent, const char* name, const char* inode_xattr) { 8489a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ino_t inode = 0; 8499a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey uint64_t inode_raw = 0; 8509a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto fallback = StringPrintf("%s/%s", parent.c_str(), name); 8519a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8529a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // Lookup the inode value written earlier 8539a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (getxattr(parent.c_str(), inode_xattr, &inode_raw, sizeof(inode_raw)) == sizeof(inode_raw)) { 8549a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey inode = inode_raw; 8559a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8569a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8579a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // For testing purposes, rely on the inode when defined; this could be 8589a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey // optimized to use access() in the future. 8599a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (inode != 0) { 8609a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey DIR* dir = opendir(parent.c_str()); 8619a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (dir == nullptr) { 8629a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey PLOG(ERROR) << "Failed to opendir " << parent; 8639a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 8649a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8659a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 8669a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey struct dirent* ent; 8679a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey while ((ent = readdir(dir))) { 8689a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (ent->d_ino == inode) { 8699a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto resolved = StringPrintf("%s/%s", parent.c_str(), ent->d_name); 8709a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#if DEBUG_XATTRS 8719a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey if (resolved != fallback) { 8729a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey LOG(DEBUG) << "Resolved path " << resolved << " for inode " << inode 8739a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey << " instead of " << fallback; 8749a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8759a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey#endif 8769a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey closedir(dir); 8779a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return resolved; 8789a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8799a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8809a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey LOG(WARNING) << "Failed to resolve inode " << inode << "; using " << fallback; 8819a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey closedir(dir); 8829a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 8839a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } else { 8849a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey return fallback; 8859a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey } 8869a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey} 8879a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey 88854e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkeyvoid add_cache_files(cache_t* cache, const std::string& data_path) { 88994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 89354e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey const char* basepath = data_path.c_str(); 89454e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey CACHE_NOISY(ALOGI("add_cache_files: basepath=%s\n", basepath)); 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 89694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 89794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 89894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 89994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 90294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 90394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 90494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 90594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 90794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 90894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 90994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 91094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 91194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 9129a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto parent = StringPrintf("%s/%s", basepath, name); 9139a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey auto resolved = read_path_inode(parent, "cache", kXattrInodeCache); 9149a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey strcpy(dirname, resolved.c_str()); 91594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 91654e292e1ea87b504b552393d2e9bc800458bd0c1Jeff Sharkey 91794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 91894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 91994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 92094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 92194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 92294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 92394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 92494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 92594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 92694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 92794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 92894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 92994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 93194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 93294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 93394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 93494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 93594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 93794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 93894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 94094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 94194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 94494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 94594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 95994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 96094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 98394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyvoid clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size) 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 99094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99192dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 100294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 100894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 101041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (data_disk_free(data_path) > free_size) { 101194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 101294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 101494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 101694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 101794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 101894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 101994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 102094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 102194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 102294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 102394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 102494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 102594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 102694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 102794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 102994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 103099d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh CACHE_NOISY(size_t i;) 103194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 10329a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey CACHE_NOISY(ALOGI("clear_cache_files: %zu dirs, %zu files\n", cache->numDirs, cache->numFiles)); 103394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 103494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 103594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 10369a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ALOGI("dir #%zu: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 103794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 103894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 103994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 104094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 10419a998f4762cb5ad71c786229be748ea0ab9eb7a0Jeff Sharkey ALOGI("file #%zu: %p %s time=%d dir=%p\n", i, file, file->name, 104294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 104494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 104794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 104894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 104994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 105094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 105294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 105394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1055c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 1056c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 1057c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 1058c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 1059e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkeystatic int validate_path(const dir_rec_t* dir, const char* path, int maxSubdirs) { 1060c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 1061c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 1062c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1063c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 1064c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 1065c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 1066e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey if ((--maxSubdirs == 0) && strchr(subdir, '/') != NULL) { 1067c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 1068c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1069c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1070c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1071c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1072c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 1073c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 1074c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 1075c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1076c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1077c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1078c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 1079c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 1080c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1081c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 108294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 108394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 108594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 108994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 109094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 1091e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(android_system_dirs.dirs + i, path, 1); 109294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 109394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 109494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 109794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 110294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 110394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 110494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 110594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 110694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 110794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 110894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 110994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 111094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 111194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 111294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 111394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 111494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 111594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 111694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 111794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 111894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 111994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 112094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 112194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 112294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 112394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 112494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 112594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 112694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 112794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 112994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 113094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 113194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 113294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 113494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 113594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 113794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 113894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 113994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 114094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 114294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 114394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 114494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 114594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 114794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 114894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114919803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey rec->path = (char*) malloc(dst_size); 115094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 115194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 115294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 115394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 115494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 115594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 115694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 115794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 115894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 115994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 116094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 116194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 116294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 116394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 116494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 116594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 116694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 116794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 116894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 116994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 117094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 117194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 117294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 117394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 117494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 117594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 117694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 117794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 117894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 117994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 118194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 118294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1184d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * Check whether path points to a valid path for an APK file. The path must 1185d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * begin with a whitelisted prefix path and must be no deeper than |maxSubdirs| within 1186d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * that path. Returns -1 when an invalid path is encountered and 0 when a valid path 1187d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * is encountered. 118894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 1189d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathstatic int validate_apk_path_internal(const char *path, int maxSubdirs) { 1190c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 119194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1192c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 119394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1194c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 11955c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy } else if (!strncmp(path, android_app_ephemeral_dir.path, android_app_ephemeral_dir.len)) { 11965c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy dir = &android_app_ephemeral_dir; 119794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1198c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 1199e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey } else if (!strncmp(path, android_mnt_expand_dir.path, android_mnt_expand_dir.len)) { 1200e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey dir = &android_mnt_expand_dir; 1201d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath if (maxSubdirs < 2) { 1202d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath maxSubdirs = 2; 1203d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath } 120494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 120594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 120694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 120794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1208e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(dir, path, maxSubdirs); 120994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 121094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1211d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path(const char* path) { 1212d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 1 /* maxSubdirs */); 1213d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1214d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 1215d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path_subdirs(const char* path) { 1216d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 3 /* maxSubdirs */); 1217d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1218d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 121994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 122094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 122194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 122294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 122394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 122494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 122594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 122694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 122794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 122894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 122919803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string2(const char *s1, const char *s2) { 123094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 123194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 123294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 123394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 123494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 123519803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 123694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 123794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 123894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 123994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 124094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 124194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 124294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 124394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 124419803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string3(const char *s1, const char *s2, const char *s3) { 124594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 124694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 124794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 124894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 124994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 125094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 125119803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 125294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 125394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 125494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 125594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 125694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 125794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 125894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 125994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 126094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1261095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1262095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 126360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 126460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1265095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1266095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1267379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey auto path = create_data_misc_legacy_path(userid); 1268379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return fs_prepare_dir(path.c_str(), 0750, uid, gid); 1269095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 127002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 127102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampeint wait_child(pid_t pid) 127202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe{ 127302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe int status; 127402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe pid_t got_pid; 127502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 127602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe while (1) { 127702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe got_pid = waitpid(pid, &status, 0); 127802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid == -1 && errno == EINTR) { 127902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe printf("waitpid interrupted, retrying\n"); 128002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 128102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe break; 128202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 128302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 128402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid != pid) { 128502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe ALOGW("waitpid failed: wanted %d, got %d: %s\n", 128602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe (int) pid, (int) got_pid, strerror(errno)); 128702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 1; 128802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 128902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 129002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { 129102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 0; 129202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 129302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return status; /* always nonzero */ 129402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 129502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} 129602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 129702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace installd 129802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace android 1299