utils.cpp revision 63ec2d64196144b2d15d2baffedccfa011d6494f
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 1794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#include "installd.h" 1894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 19c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#include <base/stringprintf.h> 20c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#include <base/logging.h> 2194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 22c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey#define CACHE_NOISY(x) //x 2394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 24c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyusing android::base::StringPrintf; 2594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 27c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Check that given string is valid filename, and that it attempts no 28c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * parent or child directory traversal. 2994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 30c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeystatic bool is_valid_filename(const std::string& name) { 31c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (name.empty() || (name == ".") || (name == "..") 32c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey || (name.find('/') != std::string::npos)) { 33c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return false; 3494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 35c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return true; 3694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 3894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 39c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey/** 40d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name where package app contents should be stored for 41d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * the given volume UUID and package name. An empty UUID is assumed to 42d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * be internal storage. 43d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 44d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_package_path(const char* volume_uuid, 45d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey const char* package_name) { 46d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey CHECK(is_valid_filename(package_name)); 47d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey CHECK(is_valid_package_name(package_name) == 0); 48d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 49d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 50d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_app_path(volume_uuid).c_str(), package_name); 51d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 52d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 53d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 54c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Create the path name where package data should be stored for the given 55c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * volume UUID, package name, and user ID. An empty UUID is assumed to be 56c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * internal storage. 57c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey */ 58d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_user_package_path(const char* volume_uuid, 59d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey userid_t user, const char* package_name) { 60c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey CHECK(is_valid_filename(package_name)); 61c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey CHECK(is_valid_package_name(package_name) == 0); 62c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 63d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/%s", 64d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey create_data_user_path(volume_uuid, user).c_str(), package_name); 65c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 6694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 6763ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_package_path(const char* volume_uuid, 6863ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey userid_t user, const char* package_name) { 6963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey CHECK(is_valid_filename(package_name)); 7063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey CHECK(is_valid_package_name(package_name) == 0); 7163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 7263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/%s", 7363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey create_data_user_de_path(volume_uuid, user).c_str(), package_name); 7463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 7563ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 76c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyint create_pkg_path(char path[PKG_PATH_MAX], const char *pkgname, 77c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char *postfix, userid_t userid) { 78c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (is_valid_package_name(pkgname) != 0) { 79c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 8094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 8194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 8294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey std::string _tmp(create_data_user_package_path(nullptr, userid, pkgname) + postfix); 84c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* tmp = _tmp.c_str(); 85c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(tmp) >= PKG_PATH_MAX) { 86c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 87c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 88c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 89c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey strcpy(path, tmp); 90c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return 0; 9194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 9294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 9394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 9441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_path(const char* volume_uuid) { 9541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 9641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return "/data"; 9794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 9841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey CHECK(is_valid_filename(volume_uuid)); 9941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("/mnt/expand/%s", volume_uuid); 10094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 10141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey} 10294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 10341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey/** 104d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey * Create the path name for app data. 105d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey */ 106d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkeystd::string create_data_app_path(const char* volume_uuid) { 107d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey return StringPrintf("%s/app", create_data_path(volume_uuid).c_str()); 108d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey} 109d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey 110d792118c493806eeb24a8203f508e6e18fe93bd7Jeff Sharkey/** 11141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey * Create the path name for user data for a certain userid. 11241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey */ 11341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_user_path(const char* volume_uuid, userid_t userid) { 11441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey std::string data(create_data_path(volume_uuid)); 11541ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (volume_uuid == nullptr) { 11641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (userid == 0) { 11741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/data", data.c_str()); 11841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 11941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 12094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 12141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey } else { 12241ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/user/%u", data.c_str(), userid); 12394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 12494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 12594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 12694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 12763ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey * Create the path name for device encrypted user data for a certain userid. 12863ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey */ 12963ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkeystd::string create_data_user_de_path(const char* volume_uuid, userid_t userid) { 13063ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey std::string data(create_data_path(volume_uuid)); 13163ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey return StringPrintf("%s/user_de/%u", data.c_str(), userid); 13263ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey} 13363ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey 13463ec2d64196144b2d15d2baffedccfa011d6494fJeff Sharkey/** 135abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 13694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 13741ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeystd::string create_data_media_path(const char* volume_uuid, userid_t userid) { 13841ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey return StringPrintf("%s/media/%u", create_data_path(volume_uuid).c_str(), userid); 13994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 14094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 141e36372423000a906bafae68844ebc6c42d09335aJeff Sharkeystd::vector<userid_t> get_known_users(const char* volume_uuid) { 142e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::vector<userid_t> users; 143e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 144e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // We always have an owner 145e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(0); 146e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 147e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey std::string path(create_data_path(volume_uuid) + "/" + SECONDARY_USER_PREFIX); 148e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey DIR* dir = opendir(path.c_str()); 149e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (dir == NULL) { 150e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey // Unable to discover other users, but at least return owner 151e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey PLOG(ERROR) << "Failed to opendir " << path; 152e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 153e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 154e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 155e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey struct dirent* ent; 156e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey while ((ent = readdir(dir))) { 157e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (ent->d_type != DT_DIR) { 158e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey continue; 159e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 160e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 161e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey char* end; 162e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey userid_t user = strtol(ent->d_name, &end, 10); 163e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey if (*end == '\0' && user != 0) { 164e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey LOG(DEBUG) << "Found valid user " << user; 165e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey users.push_back(user); 166e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 167e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey } 168e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey closedir(dir); 169e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 170e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey return users; 171e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey} 172e36372423000a906bafae68844ebc6c42d09335aJeff Sharkey 173095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee/** 174095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Create the path name for config for a certain userid. 175095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Returns 0 on success, and -1 on failure. 176095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee */ 177095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint create_user_config_path(char path[PATH_MAX], userid_t userid) { 178095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (snprintf(path, PATH_MAX, "%s%d", "/data/misc/user/", userid) > PATH_MAX) { 179095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 180095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 181095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 182095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 183095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 18494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 18594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 18694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 18799d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh userid_t userid __unused) 18894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 18994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 19094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 19194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 19294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 19394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 19494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 19594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 19694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 19794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 19894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 19994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 20094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 20194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 20294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint is_valid_package_name(const char* pkgname) { 20394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 20494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 20594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 206c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(pkgname) > PKG_NAME_MAX) { 207c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 208c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 209c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 21094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 21194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 21294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 21394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 21494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 21594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 21694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 21794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 21894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 21994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 22094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 22194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 22294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 22394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 22494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 22594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 22694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 22794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 22894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 22994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 23094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 23194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 23394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 23494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 23594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 23694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 23794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 23894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 23994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 24094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 24194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 24294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 24394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 24494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 24594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 24694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2473aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 2483aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 24994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 25094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 25194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 25294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 25394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 25494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 25594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 25694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 25794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2613aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 2623aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 2633aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 2643aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 26799d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh int subfd; 26894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 26994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 27094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 27194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 27294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 27394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 27494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2768b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 27794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 28194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 28294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 28394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 28494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 28594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 2893aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 29594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 29894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 29994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 30094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 30194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 3103aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char*, const int)) 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 31494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 31994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3203aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 32294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 32394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 32494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 32594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 32694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 32794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 32894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 32994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 33094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 33294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 33394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 33494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 33594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3368b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich fd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 33794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 33894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 33994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 34094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 34294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 34394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 34494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 34594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 34694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 34894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 34994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 35094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 35194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 35260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 35360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 35460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 35560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 35660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 35760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 35860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 35960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 36060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 36160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 36260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 36360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 36460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 36560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 36660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 36760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 36860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 36960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 37060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 37160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 37260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 37360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 37460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 37560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 37660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 37760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 37860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 37960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 38060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 38160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 38260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 38360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 38460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 38560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 38660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 38760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 38860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 38960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 39060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 39160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 39260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 39360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 39460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 39560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 39660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 39760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 39860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 39960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 40060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 40160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 40260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 40360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 40460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 40560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 40660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 40760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 40860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 40960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 41060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 41160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 41260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 41360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 41460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 41560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 41660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 41760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 41860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 41960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 42060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 42160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 42260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 42360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 42460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 42560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 42660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 42760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 42860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 42960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 43060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 43160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 43260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 43360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 43460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 43560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 43660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 43760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 43860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 43960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 44060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 44160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 44260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 44360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 44460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 44560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 44660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 44760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 44860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 44960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 45094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint lookup_media_dir(char basepath[PATH_MAX], const char *dir) 45194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 45294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 45394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 45494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 45594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* dirpos = basepath + strlen(basepath); 45694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 45794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(dirpos-1)) != '/') { 45894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = '/'; 45994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dirpos++; 46094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 46294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Looking up %s in %s\n", dir, basepath)); 46394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Verify the path won't extend beyond our buffer, to avoid 46494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // repeated checking later. 46594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((dirpos-basepath+strlen(dir)) >= (PATH_MAX-1)) { 46694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Path exceeds limit: %s%s", basepath, dir); 46794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 46894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // First, can we find this directory with the case that is given? 47194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, dir); 47294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(basepath, &s) >= 0) { 47394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found direct: %s\n", basepath)); 47494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 47594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 47694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Not found with that case... search through all entries to find 47894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // one that matches regardless of case. 47994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = 0; 48094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 48194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 48294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 48394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 48494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 48594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 48694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 48794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (strcasecmp(de->d_name, dir) == 0) { 48894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, de->d_name); 48994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 49094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found search: %s\n", basepath)); 49194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 49294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 49394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 49494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 49594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Couldn't find %s in %s", dir, basepath); 49694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 49794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 49894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 49994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 50041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyint64_t data_disk_free(const std::string& data_path) 50194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 50294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 50341ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (statfs(data_path.c_str(), &sfs) == 0) { 50494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 50594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 50641ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey PLOG(ERROR) << "Couldn't statfs " << data_path; 50794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 50894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 50994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 51094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 51194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 51294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 51394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 51494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 51594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 51694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 51794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 51894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 51994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 52094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 52194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 52294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 52394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 52494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 52594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 52694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 52794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 52894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 52994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 53094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %d", res, len)); 53194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 53294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 53394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 53494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 53594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 53694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 53794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 54094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 54394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 54419803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey int8_t* newBlock = (int8_t*) malloc(CACHE_BLOCK_SIZE); 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 55094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 55194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 55494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("cache_malloc: ret %p size %d, block=%p, nextPos=%p", 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 55994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 56794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 57394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 57494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 57592dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 57794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 58094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 58194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 58494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 59294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Setting file %p at position %d in array %p", file, 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 6768b7acacc93930df9fa9e1ebea4a4394195b2332eNick Kralevich subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid add_cache_files(cache_t* cache, const char *basepath, const char *cachedir) 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("add_cache_files: base=%s cachedir=%s\n", basepath, cachedir)); 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* pathpos; 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirname, basepath); 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos = dirname + strlen(dirname); 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(pathpos-1)) != '/') { 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = '/'; 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos++; 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = 0; 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cachedir != NULL) { 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s/%s", name, cachedir); 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s", name); 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 79694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 79794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 79894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 79994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 80094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 80194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 80294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 80694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 80794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 80894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 80994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 81094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 81194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 81294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 81394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 81494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 81694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 81794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 81894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 81994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 82094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 82194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 82294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 82394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 82494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 82594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 82694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 82794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 82894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 82994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 83094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 83194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 83294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 83394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 83494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 83594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 83794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 83894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 83994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 84094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 84194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 84494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 84594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 84694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 84794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 84994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 85094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 85194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 85294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 85394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 85494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 85694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 85894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 85994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 86094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 86194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 86294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 86394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 86441ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyvoid clear_cache_files(const std::string& data_path, cache_t* cache, int64_t free_size) 86594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 86694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 86794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 86894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 86994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87092dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 87194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 87294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 87494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 87594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 87694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 87894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 87994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 88094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 88194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 88294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 88694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 88794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 88894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 88941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (data_disk_free(data_path) > free_size) { 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 89394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 89494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 89694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 89794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 89894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 89994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 90194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 90294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 90394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 90694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 90894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 90999d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh CACHE_NOISY(size_t i;) 91094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 91194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("clear_cache_files: %d dirs, %d files\n", cache->numDirs, cache->numFiles)); 91294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 91394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 91494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 91594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("dir #%d: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 91694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 91794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 91894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 91994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 92094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("file #%d: %p %s time=%d dir=%p\n", i, file, file->name, 92194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 92294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 92394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 92494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 92594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 92694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 92794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 92894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 92994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 93094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 93194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 93294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 934c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 935c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 936c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 937c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 938e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkeystatic int validate_path(const dir_rec_t* dir, const char* path, int maxSubdirs) { 939c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 940c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 941c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 942c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 943c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 944c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 945e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey if ((--maxSubdirs == 0) && strchr(subdir, '/') != NULL) { 946c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 947c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 948c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 949c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 950c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 951c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 952c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 953c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 954c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 955c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 956c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 957c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 958c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 959c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 960c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 96394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 970e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(android_system_dirs.dirs + i, path, 1); 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 98394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 98594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 99094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 100294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 100494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 100894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 101094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 101294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 101394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 101494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 101594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 101694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 101794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 101894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 102194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 102294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 102394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 102494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 102694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 102794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102819803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey rec->path = (char*) malloc(dst_size); 102994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 103094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 103194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 103294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 103494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 103694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 103794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 103894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 103994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 104094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 104294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 104494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 104894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 104994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 105094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 105194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 105394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 105494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 105594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 105694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 105794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 106094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 106194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1063d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * Check whether path points to a valid path for an APK file. The path must 1064d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * begin with a whitelisted prefix path and must be no deeper than |maxSubdirs| within 1065d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * that path. Returns -1 when an invalid path is encountered and 0 when a valid path 1066d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath * is encountered. 106794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 1068d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathstatic int validate_apk_path_internal(const char *path, int maxSubdirs) { 1069c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 107094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1071c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 107294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1073c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 107494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1075c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 1076e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey } else if (!strncmp(path, android_mnt_expand_dir.path, android_mnt_expand_dir.len)) { 1077e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey dir = &android_mnt_expand_dir; 1078d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath if (maxSubdirs < 2) { 1079d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath maxSubdirs = 2; 1080d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath } 108194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 108294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 108394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1085e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(dir, path, maxSubdirs); 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1088d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path(const char* path) { 1089d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 1 /* maxSubdirs */); 1090d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1091d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 1092d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamathint validate_apk_path_subdirs(const char* path) { 1093d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath return validate_apk_path_internal(path, 3 /* maxSubdirs */); 1094d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath} 1095d845c96128a40ca5802c0840ae190fa0af7d4735Narayan Kamath 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 109794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 110294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 110394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 110494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 110594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string2(const char *s1, const char *s2) { 110794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 110894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 111094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 111194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 111219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 111394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 111494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 111594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 111694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 111794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 111894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 111994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 112094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112119803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string3(const char *s1, const char *s2, const char *s3) { 112294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 112394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 112494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 112594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 112694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 112794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 112819803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 112994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 113094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 113294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 113394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 113494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 113694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 113794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 113894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/* Ensure that /data/media directories are prepared for given user. */ 113941ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkeyint ensure_media_user_dirs(const char* uuid, userid_t userid) { 114041ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey std::string media_user_path(create_data_media_path(uuid, userid)); 114141ea424413c0381ef2aa15fc5bd5d4b88abd23c4Jeff Sharkey if (fs_prepare_dir(media_user_path.c_str(), 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { 114294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 114394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 114494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 114594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 114694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 1147d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1148095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1149095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee char config_user_path[PATH_MAX]; 1150095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1151095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 115260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 115360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1154095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1155095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1156095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee create_user_config_path(config_user_path, userid); 1157095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (fs_prepare_dir(config_user_path, 0750, uid, gid) == -1) { 1158095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 1159095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 1160095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1161095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 1162095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 1163095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1164d93707342a61e66bc3eb2145628158452f577f42Dave Allisonint create_profile_file(const char *pkgname, gid_t gid) { 1165d93707342a61e66bc3eb2145628158452f577f42Dave Allison const char *profile_dir = DALVIK_CACHE_PREFIX "profiles"; 1166d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1167d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1168d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", profile_dir, pkgname); 1169d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1170d93707342a61e66bc3eb2145628158452f577f42Dave Allison // The 'system' user needs to be able to read the profile to determine if dex2oat 1171d93707342a61e66bc3eb2145628158452f577f42Dave Allison // needs to be run. This is done in dalvik.system.DexFile.isDexOptNeededInternal(). So 11720db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // we assign ownership to AID_SYSTEM and ensure it's not world-readable. 1173d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11740db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich int fd = open(profile_file, O_WRONLY | O_CREAT | O_NOFOLLOW | O_CLOEXEC, 0660); 1175d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11760db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // Always set the uid/gid/permissions. The file could have been previously created 11770db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // with different permissions. 1178d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (fd >= 0) { 11790db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich if (fchown(fd, AID_SYSTEM, gid) < 0) { 1180d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chown profile file '%s': %s\n", profile_file, strerror(errno)); 1181d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1182d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1183d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1184d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1185d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11860db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich if (fchmod(fd, 0660) < 0) { 1187d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chmod profile file '%s': %s\n", profile_file, strerror(errno)); 1188d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1189d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1190d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1191d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1192d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1193d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1194d93707342a61e66bc3eb2145628158452f577f42Dave Allison return 0; 1195d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1196d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1197d93707342a61e66bc3eb2145628158452f577f42Dave Allisonvoid remove_profile_file(const char *pkgname) { 1198d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1199d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", DALVIK_CACHE_PREFIX "profiles", pkgname); 1200d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1201d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1202