utils.cpp revision c03de09173f98506e73e7cf7df21fe11795d4b24
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/** 40c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * Create the path name where package data should be stored for the given 41c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * volume UUID, package name, and user ID. An empty UUID is assumed to be 42c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey * internal storage. 43c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey */ 44c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeystd::string create_package_data_path(const char* volume_uuid, 45c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* package_name, userid_t user) { 46c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey CHECK(is_valid_filename(package_name)); 47c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey CHECK(is_valid_package_name(package_name) == 0); 48c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 49c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (volume_uuid == nullptr) { 50c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (user == 0) { 51c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey // /data/data/com.example 52c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return StringPrintf("%sdata/%s", android_data_dir.path, package_name); 53c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 54c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey // /data/user/0/com.example 55c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return StringPrintf("%suser/%u/%s", android_data_dir.path, user, package_name); 56c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 57c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 58c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey CHECK(is_valid_filename(volume_uuid)); 5994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey // /mnt/expand/uuid/user/0/com.example 61c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return StringPrintf("%s%s/user/%u/%s", android_mnt_expand_dir.path, 62c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey volume_uuid, user, package_name); 63c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 64c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey} 6594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 66c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkeyint create_pkg_path(char path[PKG_PATH_MAX], const char *pkgname, 67c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char *postfix, userid_t userid) { 68c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (is_valid_package_name(pkgname) != 0) { 69c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 7094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 7194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 7294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey std::string _tmp(create_package_data_path(nullptr, pkgname, userid) + postfix); 74c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey const char* tmp = _tmp.c_str(); 75c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(tmp) >= PKG_PATH_MAX) { 76c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey path[0] = '\0'; 77c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 78c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } else { 79c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey strcpy(path, tmp); 80c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return 0; 8194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 8294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 8394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 8494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 85abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for user data for a certain userid. 8694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success, and -1 on failure. 8794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 88abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkeyint create_user_path(char path[PKG_PATH_MAX], 89abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_t userid) 9094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 91abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey size_t userid_len; 9219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey const char* userid_prefix; 93abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (userid == 0) { 94abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_prefix = PRIMARY_USER_PREFIX; 95abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_len = 0; 9694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 97abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_prefix = SECONDARY_USER_PREFIX; 98abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_len = snprintf(NULL, 0, "%d/", userid); 9994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 10094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 10194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst = path; 10294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = PKG_PATH_MAX; 10394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 10494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, android_data_dir.path, &dst_size) < 0 105abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey || append_and_increment(&dst, userid_prefix, &dst_size) < 0) { 10694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error building prefix for user path"); 10794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 10894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 10994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (userid != 0) { 111abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (dst_size < userid_len + 1) { 11294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error building user path"); 11394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 11494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 115abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey int ret = snprintf(dst, dst_size, "%d/", userid); 116abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (ret < 0 || (size_t) ret != userid_len) { 117abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey ALOGE("Error appending userid to path"); 11894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 11994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 12094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 12194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 12294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 12394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 12494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 125abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 12694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success, and -1 on failure. 12794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 128abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkeyint create_user_media_path(char path[PATH_MAX], userid_t userid) { 12994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (snprintf(path, PATH_MAX, "%s%d", android_media_dir.path, userid) > PATH_MAX) { 13094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 13194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 13294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 13394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 13494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 135095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee/** 136095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Create the path name for config for a certain userid. 137095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Returns 0 on success, and -1 on failure. 138095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee */ 139095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint create_user_config_path(char path[PATH_MAX], userid_t userid) { 140095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (snprintf(path, PATH_MAX, "%s%d", "/data/misc/user/", userid) > PATH_MAX) { 141095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 142095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 143095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 144095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 145095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 14694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 14794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 14894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 14999d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh userid_t userid __unused) 15094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 15194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 15294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 15394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 15494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 15594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 15694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 15794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 15894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 15994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 16094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 16194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 16294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 16394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 16494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint is_valid_package_name(const char* pkgname) { 16594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 16694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 16794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 168c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey if (strlen(pkgname) > PKG_NAME_MAX) { 169c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey return -1; 170c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey } 171c03de09173f98506e73e7cf7df21fe11795d4b24Jeff Sharkey 17294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 17394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 17494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 17594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 17694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 17794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 17894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 17994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 18094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 18294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 18394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 18494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 18594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 18694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 18794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 18894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 18994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 19094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 19194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 19294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 19394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 19494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 19594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 19694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 19794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 19894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 19994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 20094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 20194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 20394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 20694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 20794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 20894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2093aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 2103aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 21194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 21294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 21394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 21494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 21594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 21694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 21794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 21894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 21994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 22094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 22194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 22294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2233aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 2243aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 2253aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 2263aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 22794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 22894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 22999d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh int subfd; 23094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 23194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 23394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 23494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 23594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 23694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 23794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 23994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 24094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 24194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 24294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 24394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 24494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 24594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 24694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 24794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 24894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 24994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 25094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 2513aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 25294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 25394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 25494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 25594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 25694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 25794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 26194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 26294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 26394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 26894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 26994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 27094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 27194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 2723aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char*, const int)) 27394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 27494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 27594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 27694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 27794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 28194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 2823aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 28394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 28494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 28594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 28994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 29294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 29594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 29794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood fd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 29994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 30094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 30194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 31094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 31560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 31660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 31760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 31860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 31960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 32060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 32160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 32260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 32360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 32460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 32560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 32660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 32760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 32860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 32960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 33060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 33160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 33260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 33360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 33460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 33560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 33660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 33760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 33860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 33960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 34060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 34160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 34260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 34360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 34460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 34560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 34660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 34760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 34860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 34960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 35060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 35160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 35260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 35360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 35460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 35560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 35660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 35760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 35860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 35960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 36060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 36160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 36260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 36360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 36460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 36560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 36660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 36760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 36860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 36960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 37060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 37160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 37260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 37360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 37460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 37560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 37660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 37760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 37860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 37960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 38060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 38160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 38260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 38360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 38460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 38560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 38660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 38760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 38860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 38960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 39060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 39160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 39260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 39360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 39460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 39560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 39660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 39760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 39860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 39960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 40060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 40160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 40260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 40360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 40460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 40560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 40660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 40760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 40860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 40960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 41060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 41160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 41294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint lookup_media_dir(char basepath[PATH_MAX], const char *dir) 41394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 41494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 41594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 41694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 41794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* dirpos = basepath + strlen(basepath); 41894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 41994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(dirpos-1)) != '/') { 42094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = '/'; 42194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dirpos++; 42294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 42494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Looking up %s in %s\n", dir, basepath)); 42594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Verify the path won't extend beyond our buffer, to avoid 42694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // repeated checking later. 42794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((dirpos-basepath+strlen(dir)) >= (PATH_MAX-1)) { 42894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Path exceeds limit: %s%s", basepath, dir); 42994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 43094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 43194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 43294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // First, can we find this directory with the case that is given? 43394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, dir); 43494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(basepath, &s) >= 0) { 43594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found direct: %s\n", basepath)); 43694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 43794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 43894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 43994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Not found with that case... search through all entries to find 44094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // one that matches regardless of case. 44194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = 0; 44294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 44394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 44494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 44594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 44694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 44794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 44894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 44994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (strcasecmp(de->d_name, dir) == 0) { 45094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, de->d_name); 45194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 45294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found search: %s\n", basepath)); 45394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 45494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 45594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 45694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 45794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Couldn't find %s in %s", dir, basepath); 45894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 45994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 46094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 46194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 46294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint64_t data_disk_free() 46394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 46494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 46594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (statfs(android_data_dir.path, &sfs) == 0) { 46694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 46794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 46894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't statfs %s: %s\n", android_data_dir.path, strerror(errno)); 46994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 47094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 47194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 47294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 47494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 47594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 47694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 47794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 47894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 48094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 48194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 48294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 48394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 48494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 48594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 48694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 48794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 48894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 48994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 49094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 49194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 49294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %d", res, len)); 49394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 49494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 49594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 49694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 49794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 49894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 49994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 50094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 50194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 50294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 50394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 50494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 50594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 50619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey int8_t* newBlock = (int8_t*) malloc(CACHE_BLOCK_SIZE); 50794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 50894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 50994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 51094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 51194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 51294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 51394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 51494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 51594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 51694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 51794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("cache_malloc: ret %p size %d, block=%p, nextPos=%p", 51894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 51994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 52094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 52194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 52294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 52394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 52494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 52594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 52694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 52794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 52894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 52994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 53094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 53194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 53294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 53394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 53494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 53594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 53694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 53792dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 54394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 54494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 54894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 55094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 55194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 55494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 55994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 56794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 57394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 57494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 57594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 57794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 58094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 58194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 58494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 59294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Setting file %p at position %d in array %p", file, 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid add_cache_files(cache_t* cache, const char *basepath, const char *cachedir) 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("add_cache_files: base=%s cachedir=%s\n", basepath, cachedir)); 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* pathpos; 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirname, basepath); 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos = dirname + strlen(dirname); 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(pathpos-1)) != '/') { 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = '/'; 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos++; 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = 0; 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cachedir != NULL) { 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s/%s", name, cachedir); 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s", name); 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 79594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 79694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 79794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 79994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 80094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 80194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 80294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 80394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 80594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 80694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 80794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 80894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 80994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 81194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 81294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 81394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 81494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 81594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 81694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 81894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 81994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 82094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 82194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 82294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 82394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 82494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 82594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 82694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid clear_cache_files(cache_t* cache, int64_t free_size) 82794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 82894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 82994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 83094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 83194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83292dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 83394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 83494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 83694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 83794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 83894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 84094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 84194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 84294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 84394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 84494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 84794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 84894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 84994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 85094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 85194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (data_disk_free() > free_size) { 85294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 85394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 85594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 85794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 85894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 85994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 86094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 86194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 86394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 86494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 86594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 86894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 86994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 87094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 87199d9fb15b4a1eb534261ae81b2cf25aec4447bd0Chih-Hung Hsieh CACHE_NOISY(size_t i;) 87294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("clear_cache_files: %d dirs, %d files\n", cache->numDirs, cache->numFiles)); 87494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 87594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 87694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 87794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("dir #%d: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 87894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 87994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 88094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 88194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 88294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("file #%d: %p %s time=%d dir=%p\n", i, file, file->name, 88394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 88494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 88594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 88694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 88794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 88894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 88994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 89394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 89494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 896c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 897c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 898c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 899c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 900e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkeystatic int validate_path(const dir_rec_t* dir, const char* path, int maxSubdirs) { 901c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 902c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 903c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 904c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 905c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 906c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 907e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey if ((--maxSubdirs == 0) && strchr(subdir, '/') != NULL) { 908c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 909c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 910c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 911c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 912c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 913c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 914c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 915c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 916c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 917c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 918c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 919c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 920c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 921c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 922c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 92394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 92494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 92594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 92694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 92794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 92894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 92994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 93094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 93194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 932e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(android_system_dirs.dirs + i, path, 1); 93394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 93494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 93594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 93794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 93894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 94094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 94194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 94494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 94594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 95794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 95994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 96094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 96394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 98394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 98594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99019803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey rec->path = (char*) malloc(dst_size); 99194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 100494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 100894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 101094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 101194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 101294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 101394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 101494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 101594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 101694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 101794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 101894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 101994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 102094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 102294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 102394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1025fd88ff2edd954117e36372fb095b6f5f35aad0e3Calin Juravle * Check whether path points to a valid path for an APK file. Only one level of 1026fd88ff2edd954117e36372fb095b6f5f35aad0e3Calin Juravle * subdirectory names is allowed. Returns -1 when an invalid path is encountered 1027fd88ff2edd954117e36372fb095b6f5f35aad0e3Calin Juravle * and 0 when a valid path is encountered. 102894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 102994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_apk_path(const char *path) 103094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 1031c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 1032e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey int maxSubdirs = 1; 103394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1035c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 103694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1037c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 103894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1039c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 1040e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey } else if (!strncmp(path, android_mnt_expand_dir.path, android_mnt_expand_dir.len)) { 1041e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey dir = &android_mnt_expand_dir; 1042e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey maxSubdirs = 2; 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 104494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1047e23a13299a4f6f2488935b4786cdbb46f46e3d3cJeff Sharkey return validate_path(dir, path, maxSubdirs); 104894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 104994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 105194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 105294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 105394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 105494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 105694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 105794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 105894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 105994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106019803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string2(const char *s1, const char *s2) { 106194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 106294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 106494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 106594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 106619803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 106794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 106894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 107094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 107194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 107394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 107494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107519803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkeychar *build_string3(const char *s1, const char *s2, const char *s3) { 107694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 107794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 107994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 108094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 108194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 108219803807cd7ae01868fcfa50305f4a7dd13765e2Jeff Sharkey char *result = (char *) malloc(len); 108394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 108894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 109094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 109194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/* Ensure that /data/media directories are prepared for given user. */ 109394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint ensure_media_user_dirs(userid_t userid) { 109494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char media_user_path[PATH_MAX]; 109594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Ensure /data/media/<userid> exists 1097abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey create_user_media_path(media_user_path, userid); 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fs_prepare_dir(media_user_path, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 110394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 1104d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1105095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1106095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee char config_user_path[PATH_MAX]; 1107095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1108095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 110960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 111060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1111095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1112095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1113095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee create_user_config_path(config_user_path, userid); 1114095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (fs_prepare_dir(config_user_path, 0750, uid, gid) == -1) { 1115095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 1116095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 1117095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1118095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 1119095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 1120095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1121d93707342a61e66bc3eb2145628158452f577f42Dave Allisonint create_profile_file(const char *pkgname, gid_t gid) { 1122d93707342a61e66bc3eb2145628158452f577f42Dave Allison const char *profile_dir = DALVIK_CACHE_PREFIX "profiles"; 1123d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1124d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1125d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", profile_dir, pkgname); 1126d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1127d93707342a61e66bc3eb2145628158452f577f42Dave Allison // The 'system' user needs to be able to read the profile to determine if dex2oat 1128d93707342a61e66bc3eb2145628158452f577f42Dave Allison // needs to be run. This is done in dalvik.system.DexFile.isDexOptNeededInternal(). So 11290db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // we assign ownership to AID_SYSTEM and ensure it's not world-readable. 1130d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11310db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich int fd = open(profile_file, O_WRONLY | O_CREAT | O_NOFOLLOW | O_CLOEXEC, 0660); 1132d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11330db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // Always set the uid/gid/permissions. The file could have been previously created 11340db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // with different permissions. 1135d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (fd >= 0) { 11360db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich if (fchown(fd, AID_SYSTEM, gid) < 0) { 1137d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chown profile file '%s': %s\n", profile_file, strerror(errno)); 1138d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1139d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1140d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1141d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1142d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11430db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich if (fchmod(fd, 0660) < 0) { 1144d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chmod profile file '%s': %s\n", profile_file, strerror(errno)); 1145d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1146d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1147d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1148d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1149d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1150d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1151d93707342a61e66bc3eb2145628158452f577f42Dave Allison return 0; 1152d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1153d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1154d93707342a61e66bc3eb2145628158452f577f42Dave Allisonvoid remove_profile_file(const char *pkgname) { 1155d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1156d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", DALVIK_CACHE_PREFIX "profiles", pkgname); 1157d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1158d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1159