utils.cpp revision 379a12b0072b322c7f86e690a8e8a220e500861c
194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/* 294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** Copyright 2008, The Android Open Source Project 394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 4d93707342a61e66bc3eb2145628158452f577f42Dave Allison** Licensed under the Apache License, Version 2.0 (the "License"); 5d93707342a61e66bc3eb2145628158452f577f42Dave Allison** you may not use this file except in compliance with the License. 6d93707342a61e66bc3eb2145628158452f577f42Dave Allison** You may obtain a copy of the License at 794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 8d93707342a61e66bc3eb2145628158452f577f42Dave Allison** http://www.apache.org/licenses/LICENSE-2.0 994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** 10d93707342a61e66bc3eb2145628158452f577f42Dave Allison** Unless required by applicable law or agreed to in writing, software 11d93707342a61e66bc3eb2145628158452f577f42Dave Allison** distributed under the License is distributed on an "AS IS" BASIS, 12d93707342a61e66bc3eb2145628158452f577f42Dave Allison** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13d93707342a61e66bc3eb2145628158452f577f42Dave Allison** See the License for the specific language governing permissions and 1494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood** limitations under the License. 1594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood*/ 1694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "utils.h" 1802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 1902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <errno.h> 2002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <fcntl.h> 2102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <stdlib.h> 2202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/stat.h> 2302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/wait.h> 2402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 2502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#if defined(__APPLE__) 2602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/mount.h> 2702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#else 2802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <sys/statfs.h> 2902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 3094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31e4ec9eb7b4c452493589983970ba5ccc501728d1Elliott Hughes#include <android-base/logging.h> 3202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <android-base/stringprintf.h> 3302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/fs.h> 3402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <cutils/log.h> 3502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include <private/android_filesystem_config.h> 3602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 3702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#include "globals.h" // extern variables. 3894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#ifndef LOG_TAG 4002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#define LOG_TAG "installd" 4102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe#endif 42c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#define CACHE_NOISY(x) //x 4394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 44c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyusing android::base::StringPrintf; 4594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace android { 4702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampenamespace installd { 4802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 4994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 50c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Check that given string is valid filename, and that it attempts no 51c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * parent or child directory traversal. 5294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 53c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeystatic bool is_valid_filename(const std::string& name) { 54c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (name.empty() || (name == ".") || (name == "..") 55c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey || (name.find('/') != std::string::npos)) { 56c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return false; 5794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 58c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return true; 5994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 6194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 626a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestatic void check_package_name(const char* package_name) { 636a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_filename(package_name)); 646a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle CHECK(is_valid_package_name(package_name) == 0); 656a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 666a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 67c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey/** 68d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name where package app contents should be stored for 69d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * the given volume UUID and package name. An empty UUID is assumed to 70d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * be internal storage. 71d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 72d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_package_path(const char* volume_uuid, 73d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey const char* package_name) { 746a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 75d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 76d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_app_path(volume_uuid).c_str(), package_name); 77d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 78d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 79d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 80c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Create the path name where package data should be stored for the given 81c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * volume UUID, package name, and user ID. An empty UUID is assumed to be 82c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * internal storage. 83c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey */ 842f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, 85d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey userid_t user, const char* package_name) { 866a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 87d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 882f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey create_data_user_ce_path(volume_uuid, user).c_str(), package_name); 892f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey} 902f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 912f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_package_path(const char* volume_uuid, userid_t user, 922f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey const char* package_name, ino_t ce_data_inode) { 932f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // For testing purposes, rely on the inode when defined; this could be 942f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey // optimized to use access() in the future. 952f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto fallback = create_data_user_ce_package_path(volume_uuid, user, package_name); 962f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ce_data_inode != 0) { 972f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey auto user_path = create_data_user_ce_path(volume_uuid, user); 982f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey DIR* dir = opendir(user_path.c_str()); 992f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (dir == nullptr) { 1002f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << user_path; 1012f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1022f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1032f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey 1042f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey struct dirent* ent; 1052f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey while ((ent = readdir(dir))) { 1062f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey if (ent->d_ino == ce_data_inode) { 1071d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey auto resolved = StringPrintf("%s/%s", user_path.c_str(), ent->d_name); 1081d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey if (resolved != fallback) { 1091d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(DEBUG) << "Resolved path " << resolved << " for inode " << ce_data_inode 1101d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey << " instead of " << fallback; 1111d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey } 1122f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1131d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey return resolved; 1142f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1152f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 1161d992f9f7886f98e46f98430d6c1d061cc31fdb3Jeff Sharkey LOG(WARNING) << "Failed to resolve inode " << ce_data_inode << "; using " << fallback; 1172f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey closedir(dir); 1182f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1192f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } else { 1202f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey return fallback; 1212f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey } 122c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 12394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 12463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_package_path(const char* volume_uuid, 12563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey userid_t user, const char* package_name) { 1266a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 12763ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/%s", 12863ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey create_data_user_de_path(volume_uuid, user).c_str(), package_name); 12963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 13063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 131c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyint create_pkg_path(char path[PKG_PATH_MAX], const char *pkgname, 132c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char *postfix, userid_t userid) { 133c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (is_valid_package_name(pkgname) != 0) { 134c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 13594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 13694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 13794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1382f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkey std::string _tmp(create_data_user_ce_package_path(nullptr, userid, pkgname) + postfix); 139c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* tmp = _tmp.c_str(); 140c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(tmp) >= PKG_PATH_MAX) { 141c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 142c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 143c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 144c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey strcpy(path, tmp); 145c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return 0; 14694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 14794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 14894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 14941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_path(const char* volume_uuid) { 15041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 15141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return "/data"; 15294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 15341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey CHECK(is_valid_filename(volume_uuid)); 15441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("/mnt/expand/%s", volume_uuid); 15594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 15641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey} 15794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 15841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey/** 159d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name for app data. 160d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 161d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_path(const char* volume_uuid) { 162d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/app", create_data_path(volume_uuid).c_str()); 163d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 164d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 165d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 16641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey * Create the path name for user data for a certain userid. 16741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey */ 1682f720f7ec5c9d0b91defc85878e7330b10f8e89aJeff Sharkeystd::string create_data_user_ce_path(const char* volume_uuid, userid_t userid) { 16941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey std::string data(create_data_path(volume_uuid)); 17041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 17141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (userid == 0) { 17241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/data", data.c_str()); 17341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 17441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 17594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 17641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 17741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 17894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 17994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 18094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 18194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 18263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey * Create the path name for device encrypted user data for a certain userid. 18363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey */ 18463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_path(const char* volume_uuid, userid_t userid) { 18563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey std::string data(create_data_path(volume_uuid)); 18663ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/user_de/%u", data.c_str(), userid); 18763ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 18863ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 18963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey/** 190abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 19194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 19241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_media_path(const char* volume_uuid, userid_t userid) { 19341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/media/%u", create_data_path(volume_uuid).c_str(), userid); 19494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 19594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 196379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkeystd::string create_data_misc_legacy_path(userid_t userid) { 197379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return StringPrintf("%s/misc/user/%u", create_data_path(nullptr).c_str(), userid); 198379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey} 199379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey 2006a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profiles_path(userid_t userid) { 2016a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/cur/%u", android_profiles_dir.path, userid); 2026a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2036a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2046a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_user_profile_package_path(userid_t user, const char* package_name) { 2056a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2066a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/%s",create_data_user_profiles_path(user).c_str(), package_name); 2076a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2086a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 2096a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravlestd::string create_data_ref_profile_package_path(const char* package_name) { 2106a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle check_package_name(package_name); 2116a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle return StringPrintf("%s/ref/%s", android_profiles_dir.path, package_name); 2126a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle} 2136a1648e2f161cb1d7c46aa9d27e8062521a9f314Calin Juravle 214e36372423000a906bafae68844ebc6c42d09335aJeff Sharkeystd::vector<userid_t> get_known_users(const char* volume_uuid) { 215e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::vector<userid_t> users; 216e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 217e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // We always have an owner 218e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(0); 219e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 220e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::string path(create_data_path(volume_uuid) + "/" + SECONDARY_USER_PREFIX); 221e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey DIR* dir = opendir(path.c_str()); 222e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (dir == NULL) { 223e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // Unable to discover other users, but at least return owner 224e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << path; 225e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 226e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 227e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 228e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey struct dirent* ent; 229e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey while ((ent = readdir(dir))) { 230e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (ent->d_type != DT_DIR) { 231e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey continue; 232e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 233e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 234e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey char* end; 235e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey userid_t user = strtol(ent->d_name, &end, 10); 236e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (*end == '\0' && user != 0) { 237e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey LOG(DEBUG) << "Found valid user " << user; 238e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(user); 239e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 240e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 241e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey closedir(dir); 242e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 243e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 244e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey} 245e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 24694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 24794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 24894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 24902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe userid_t userid ATTRIBUTE_UNUSED) 25094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 25194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 25294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 25394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 25494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 25594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 25694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 25794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 26194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 26294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 26394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 26494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint is_valid_package_name(const char* pkgname) { 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 26794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 268c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(pkgname) > PKG_NAME_MAX) { 269c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 270c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 271c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 27294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 27394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 27494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 27594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 27694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 27794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 28194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 28294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 28394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 28494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 28594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 28994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 29294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 29594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 29794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 29894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 29994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 30094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 30194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 30394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3093aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 3103aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 31494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 31594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 31994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 32294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3233aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 3243aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 3253aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 3263aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 32794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 32999d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh int subfd; 33094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 33194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 33394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 33494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 33594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 33694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 33794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3388b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 33994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 34094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 34194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 34294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 34394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 34594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 34694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 34794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 34894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 34994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 35094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3513aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 35294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 35394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 35594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 35694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 35794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 35894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 36094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 36194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 36294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 36394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 36794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 36894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 36994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 370b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents(const std::string& pathname, bool ignore_if_missing) { 371b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 0, NULL, ignore_if_missing); 372ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 373ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 374b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravleint delete_dir_contents_and_dir(const std::string& pathname, bool ignore_if_missing) { 375b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return delete_dir_contents(pathname.c_str(), 1, NULL, ignore_if_missing); 376ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey} 377ebf728fd43ab5c7d11a1f9e5fdc775d6740fae0aJeff Sharkey 37894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 37994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 380b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle int (*exclusion_predicate)(const char*, const int), 381b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle bool ignore_if_missing) 38294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 38394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 38494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 38594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 38694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 38794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 388b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle if (ignore_if_missing && (errno == ENOENT)) { 389b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle return 0; 390b06f98aabc5381fd6366526d9b31b5d0345481b6Calin Juravle } 39194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 39294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 39394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3943aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 39594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 39694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 39794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 39894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 39994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 40094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 40194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 40294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 40394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 40494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 40594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 40694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 40794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 40894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 40994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4108b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich fd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 41194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 41294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 41394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 41494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 41594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 41694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 41794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 41894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 41994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 42094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 42294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 42394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 42494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 42594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 42660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 42760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 42860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 42960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 43060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 43160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 43260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 43360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 43460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 43560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 43660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 43760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 43860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 43960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 44060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 44160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 44260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 44360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 44560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 44660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 44860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 44960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 45060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 45160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 45260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 45460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 45560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 45660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 45760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 45860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 45960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 46060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 46160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 46260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 46360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 46460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 46560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 46660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 46760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 46860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 46960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 47060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 47160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 47260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 47360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 47460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 47560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 47660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 47760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 47860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 47960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 48060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 48360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 48460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 48560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 48660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 48760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 48860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 48960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 49060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 49160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 49260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 49360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 49460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 49560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 49660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 49760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 49860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 49960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 50060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 50160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 50260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 50360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 50460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 50560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 50660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 50760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 50860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 50960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 51060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 51160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 51260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 51360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 51460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 51560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 51660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 51760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 51860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 51960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 52060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 52160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 52260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 52360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 52494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint lookup_media_dir(char basepath[PATH_MAX], const char *dir) 52594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 52694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 52794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 52894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 52994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* dirpos = basepath + strlen(basepath); 53094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 53194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(dirpos-1)) != '/') { 53294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = '/'; 53394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dirpos++; 53494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 53594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 53694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Looking up %s in %s\n", dir, basepath)); 53794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Verify the path won't extend beyond our buffer, to avoid 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // repeated checking later. 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((dirpos-basepath+strlen(dir)) >= (PATH_MAX-1)) { 54094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Path exceeds limit: %s%s", basepath, dir); 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // First, can we find this directory with the case that is given? 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, dir); 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(basepath, &s) >= 0) { 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found direct: %s\n", basepath)); 54894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 55094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 55194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Not found with that case... search through all entries to find 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // one that matches regardless of case. 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = 0; 55494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 55994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (strcasecmp(de->d_name, dir) == 0) { 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, de->d_name); 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found search: %s\n", basepath)); 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 56794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Couldn't find %s in %s", dir, basepath); 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 57394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 57441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyint64_t data_disk_free(const std::string& data_path) 57594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 57741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (statfs(data_path.c_str(), &sfs) == 0) { 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 58041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey PLOG(ERROR) << "Couldn't statfs " << data_path; 58194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 58494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 59294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %d", res, len)); 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 61819803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey int8_t* newBlock = (int8_t*) malloc(CACHE_BLOCK_SIZE); 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("cache_malloc: ret %p size %d, block=%p, nextPos=%p", 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 64992dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Setting file %p at position %d in array %p", file, 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7508b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 79594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 79694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 79894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 79994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 80094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 80194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 80294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 80394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 80494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 80594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 80694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 80794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 80894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 80994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 81094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 81194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 81494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 81594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 81694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 81794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 81894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 81994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 82094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 82194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 82294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 82694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 82794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 83094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 83194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid add_cache_files(cache_t* cache, const char *basepath, const char *cachedir) 83394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 83494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 83594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 83694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 83794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("add_cache_files: base=%s cachedir=%s\n", basepath, cachedir)); 83994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 84094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 84194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 84294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 84394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 84594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 84694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 84794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 84894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 84994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* pathpos; 85094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 85294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 85394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 85494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 85594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirname, basepath); 85894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos = dirname + strlen(dirname); 85994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(pathpos-1)) != '/') { 86094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = '/'; 86194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos++; 86294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = 0; 86394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cachedir != NULL) { 86594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s/%s", name, cachedir); 86694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 86794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s", name); 86894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 87094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 87194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 87294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 87394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 87494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 87594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 87694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 87794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 87894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 87994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 88194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 88294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 88494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 88594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 88694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 88794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 88894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 89394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 89494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 89694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 89794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 89894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 89994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 90194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 90294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 90394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 90494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 90594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 90694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 90794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 90894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 90994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 91094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 91194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 91294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 91394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 91494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 91594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 91694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 91794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 91894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 91994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 92094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 92194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 92294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 92394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 92494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 92594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 92694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 92794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 92894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 92994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 93094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 93294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 93394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 93494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 93594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 93794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyvoid clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size) 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 94094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 94194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94492dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 94594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 96094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 96341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (data_disk_free(data_path) > free_size) { 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 98399d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh CACHE_NOISY(size_t i;) 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("clear_cache_files: %d dirs, %d files\n", cache->numDirs, cache->numFiles)); 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("dir #%d: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 99094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 99194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("file #%d: %p %s time=%d dir=%p\n", i, file, file->name, 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 100294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1008c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 1009c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 1010c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 1011c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 1012e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkeystatic int validate_path(const dir_rec_t* dir, const char* path, int maxSubdirs) { 1013c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 1014c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 1015c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1016c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 1017c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 1018c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 1019e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey if ((--maxSubdirs == 0) && strchr(subdir, '/') != NULL) { 1020c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 1021c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1022c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1023c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1024c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1025c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 1026c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 1027c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 1028c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 1029c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 1030c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1031c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 1032c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 1033c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 1034c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 103594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 103694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 103794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 103894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 103994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 104094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 104294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 1044e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(android_system_dirs.dirs + i, path, 1); 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 104794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 104994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 105094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 105294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 105394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 105494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 105594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 105694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 105794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 105894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 105994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 106094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 106194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 106294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 106394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 106494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 106694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 106794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 106894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 106994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 107094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 107194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 107294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 107394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 107494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 107594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 107694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 107794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 107894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 107994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 108094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 108294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 108394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 108594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 108894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 109094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 109194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 109294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 109394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 109594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 109794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey rec->path = (char*) malloc(dst_size); 110394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 110494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 110594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 110694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 110894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 111094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 111194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 111294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 111394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 111494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 111594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 111694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 111794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 111894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 111994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 112094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 112294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 112394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 112494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 112594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 112794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 112894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 112994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 113094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 113194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 113294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 113494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 113594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1137d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * Check whether path points to a valid path for an APK file. The path must 1138d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * begin with a whitelisted prefix path and must be no deeper than |maxSubdirs| within 1139d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * that path. Returns -1 when an invalid path is encountered and 0 when a valid path 1140d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * is encountered. 114194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 1142d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathstatic int validate_apk_path_internal(const char *path, int maxSubdirs) { 1143c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 114494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1145c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 114694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1147c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 11485c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy } else if (!strncmp(path, android_app_ephemeral_dir.path, android_app_ephemeral_dir.len)) { 11495c1a910e6a2d2c42002dc6ed88ff770336afcb3fTodd Kennedy dir = &android_app_ephemeral_dir; 115094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1151c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 1152e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey } else if (!strncmp(path, android_mnt_expand_dir.path, android_mnt_expand_dir.len)) { 1153e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey dir = &android_mnt_expand_dir; 1154d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath if (maxSubdirs < 2) { 1155d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath maxSubdirs = 2; 1156d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath } 115794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 115894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 115994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 116094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1161e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(dir, path, maxSubdirs); 116294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 116394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1164d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path(const char* path) { 1165d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 1 /* maxSubdirs */); 1166d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1167d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 1168d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path_subdirs(const char* path) { 1169d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 3 /* maxSubdirs */); 1170d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1171d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 117294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 117394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 117494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 117594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 117694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 117794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 117894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 117994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 118094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 118194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string2(const char *s1, const char *s2) { 118394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 118494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 118594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 118694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 118794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 118819803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 118994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 119094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 119194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 119294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 119394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 119494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 119594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 119694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 119719803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string3(const char *s1, const char *s2, const char *s3) { 119894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 119994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 120094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 120194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 120294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 120394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 120419803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 120594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 120694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 120794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 120894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 120994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 121094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 121194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 121294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 121394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1214095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1215095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 121660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 121760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1218095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1219095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1220379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey auto path = create_data_misc_legacy_path(userid); 1221379a12b0072b322c7f86e690a8e8a220e500861cJeff Sharkey return fs_prepare_dir(path.c_str(), 0750, uid, gid); 1222095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 122302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 122402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampeint wait_child(pid_t pid) 122502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe{ 122602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe int status; 122702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe pid_t got_pid; 122802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 122902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe while (1) { 123002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe got_pid = waitpid(pid, &status, 0); 123102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid == -1 && errno == EINTR) { 123202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe printf("waitpid interrupted, retrying\n"); 123302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 123402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe break; 123502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 123602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 123702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (got_pid != pid) { 123802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe ALOGW("waitpid failed: wanted %d, got %d: %s\n", 123902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe (int) pid, (int) got_pid, strerror(errno)); 124002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 1; 124102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 124202d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 124302d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe if (WIFEXITED(status) && WEXITSTATUS(status) == 0) { 124402d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return 0; 124502d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } else { 124602d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe return status; /* always nonzero */ 124702d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe } 124802d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} 124902d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe 125002d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace installd 125102d0de56c75347a0cb8d5a8565dc8c4ee7616057Andreas Gampe} // namespace android 1252