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 1994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_NOISY(x) //x 2094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_pkg_path_in_dir(char path[PKG_PATH_MAX], 2294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const dir_rec_t* dir, 2394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 2494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* postfix) 2594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 2694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t postfix_len = strlen(postfix); 2794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t pkgname_len = strlen(pkgname); 2994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (pkgname_len > PKG_NAME_MAX) { 3094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 3194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (is_valid_package_name(pkgname) < 0) { 3494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 3594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 3694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 3794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((pkgname_len + dir->len + postfix_len) >= PKG_PATH_MAX) { 3894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 3994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 4094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst = path; 4294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = PKG_PATH_MAX; 4394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 4494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, dir->path, &dst_size) < 0 4594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, pkgname, &dst_size) < 0 4694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, postfix, &dst_size) < 0) { 4794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error building APK path"); 4894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 4994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 5094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 5194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 5294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 5394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 5494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 5594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Create the package path name for a given package name with a postfix for 56abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * a certain userid. Returns 0 on success, and -1 on failure. 5794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 5894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_pkg_path(char path[PKG_PATH_MAX], 5994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *pkgname, 6094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *postfix, 61abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_t userid) 6294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 63abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey size_t userid_len; 64abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey char* userid_prefix; 65abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (userid == 0) { 66abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_prefix = PRIMARY_USER_PREFIX; 67abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_len = 0; 6894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 69abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_prefix = SECONDARY_USER_PREFIX; 70abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_len = snprintf(NULL, 0, "%d", userid); 7194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 7294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey const size_t prefix_len = android_data_dir.len + strlen(userid_prefix) 74abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey + userid_len + 1 /*slash*/; 7594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char prefix[prefix_len + 1]; 7694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 7794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst = prefix; 7894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = sizeof(prefix); 7994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 8094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, android_data_dir.path, &dst_size) < 0 81abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey || append_and_increment(&dst, userid_prefix, &dst_size) < 0) { 8294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error building prefix for APK path"); 8394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 8494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 8594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 86abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (userid != 0) { 87abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey int ret = snprintf(dst, dst_size, "%d/", userid); 88abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (ret < 0 || (size_t) ret != userid_len + 1) { 8994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Error appending UID to APK path"); 9094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 9194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 9294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 9394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 9494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir_rec_t dir; 9594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir.path = prefix; 9694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir.len = prefix_len; 9794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 9894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return create_pkg_path_in_dir(path, &dir, pkgname, postfix); 9994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 10094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 10194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 102abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for user data for a certain userid. 10394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success, and -1 on failure. 10494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 105abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkeyint create_user_path(char path[PKG_PATH_MAX], 106abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_t userid) 10794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 108abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey size_t userid_len; 109abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey char* userid_prefix; 110abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (userid == 0) { 111abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_prefix = PRIMARY_USER_PREFIX; 112abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_len = 0; 11394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 114abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_prefix = SECONDARY_USER_PREFIX; 115abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_len = snprintf(NULL, 0, "%d/", userid); 11694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 11794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 11894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst = path; 11994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = PKG_PATH_MAX; 12094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 12194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, android_data_dir.path, &dst_size) < 0 122abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey || append_and_increment(&dst, userid_prefix, &dst_size) < 0) { 12394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error building prefix for user path"); 12494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 12594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 12694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 127abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (userid != 0) { 128abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (dst_size < userid_len + 1) { 12994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error building user path"); 13094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 13194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 132abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey int ret = snprintf(dst, dst_size, "%d/", userid); 133abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey if (ret < 0 || (size_t) ret != userid_len) { 134abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey ALOGE("Error appending userid to path"); 13594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 13694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 13794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 13894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 13994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 14094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 14194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 142abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey * Create the path name for media for a certain userid. 14394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success, and -1 on failure. 14494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 145abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkeyint create_user_media_path(char path[PATH_MAX], userid_t userid) { 14694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (snprintf(path, PATH_MAX, "%s%d", android_media_dir.path, userid) > PATH_MAX) { 14794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 14894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 14994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 15094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 15194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 152095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee/** 153095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Create the path name for config for a certain userid. 154095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee * Returns 0 on success, and -1 on failure. 155095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee */ 156095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint create_user_config_path(char path[PATH_MAX], userid_t userid) { 157095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (snprintf(path, PATH_MAX, "%s%d", "/data/misc/user/", userid) > PATH_MAX) { 158095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 159095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 160095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 161095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 162095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 16394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 16494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 16594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 166abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_t userid) 16794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 16894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 16994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 17094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 17194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 17294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 17394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 17494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 17594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 17694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 17794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 17894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 17994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 18094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 18194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint is_valid_package_name(const char* pkgname) { 18294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 18394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 18494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 18594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 18694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 18794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 18894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 18994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 19094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 19194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 19294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 19394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 19494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 19594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 19694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 19794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 19894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 19994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 20094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 20194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 20294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 20494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 20594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 20794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 20894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 20994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 21094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 21194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 21294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 21394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 21494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 21594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 21694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 21794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 21894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 21994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 22094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 22194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2223aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 2233aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 22494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 22594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 22694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 22794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 22894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 22994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 23094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 23294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 23494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 23594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2363aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 2373aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 2383aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 2393aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 24094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 24194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 24294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int r, subfd; 24394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 24494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 24594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 24694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 24794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 24894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 24994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 25094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 25194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 25294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 25394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 25494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 25594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 25694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 25794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 26194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 26294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 26394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 2643aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 26894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 26994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 27094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 27194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 27394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 27494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 27594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 27694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 28194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 28294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 28394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 28494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 2853aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char*, const int)) 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 28994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 29294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 2953aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 29794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 29894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 29994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 30094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 30194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 31094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood fd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 31494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 31594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 31994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 32094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 32294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 32394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 32494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 32594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 32694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_owner_permissions(int srcfd, int dstfd) 32860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 32960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct stat st; 33060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fstat(srcfd, &st) != 0) { 33160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 33260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 33360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchmod(dstfd, st.st_mode) != 0) { 33460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 33560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 33660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return 0; 33760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 33860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 33960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leestatic int _copy_dir_files(int sdfd, int ddfd, uid_t owner, gid_t group) 34060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 34160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int result = 0; 34260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(sdfd, ddfd) != 0) { 34360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to copy dir permissions\n"); 34460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 34560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(ddfd, owner, group) != 0) { 34660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("_copy_dir_files failed to change dir owner\n"); 34760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 34860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 34960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = fdopendir(sdfd); 35060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 35160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't fdopendir: %s\n", strerror(errno)); 35260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -1; 35360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 35460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee struct dirent *de; 35560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((de = readdir(ds))) { 35660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (de->d_type != DT_REG) { 35760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee continue; 35860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 35960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 36060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *name = de->d_name; 36160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fsfd = openat(sdfd, name, O_RDONLY | O_NOFOLLOW | O_CLOEXEC); 36260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int fdfd = openat(ddfd, name, O_WRONLY | O_NOFOLLOW | O_CLOEXEC | O_CREAT, 0600); 36360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fsfd == -1 || fdfd == -1) { 36460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 36560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 36660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (_copy_owner_permissions(fsfd, fdfd) != 0) { 36760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file permissions\n"); 36860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 36960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (fchown(fdfd, owner, group) != 0) { 37060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Failed to change file owner\n"); 37160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 37260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 37360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee char buf[8192]; 37460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ssize_t size; 37560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee while ((size = read(fsfd, buf, sizeof(buf))) > 0) { 37660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee write(fdfd, buf, size); 37760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 37860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (size < 0) { 37960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGW("Couldn't copy %s: %s\n", name, strerror(errno)); 38060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee result = -1; 38160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 38260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 38360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fdfd); 38460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee close(fsfd); 38560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 38660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 38760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return result; 38860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 38960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 39060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Leeint copy_dir_files(const char *srcname, 39160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const char *dstname, 39260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t owner, 39360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee uid_t group) 39460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee{ 39560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int res = 0; 39660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *ds = NULL; 39760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee DIR *dd = NULL; 39860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 39960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ds = opendir(srcname); 40060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (ds == NULL) { 40160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", srcname, strerror(errno)); 40260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 40360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 40460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 40560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee mkdir(dstname, 0600); 40660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee dd = opendir(dstname); 40760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (dd == NULL) { 40860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee ALOGE("Couldn't opendir %s: %s\n", dstname, strerror(errno)); 40960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 41060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return -errno; 41160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 41260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 41360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int sdfd = dirfd(ds); 41460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee int ddfd = dirfd(dd); 41560fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee if (sdfd != -1 && ddfd != -1) { 41660fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = _copy_dir_files(sdfd, ddfd, owner, group); 41760fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } else { 41860fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee res = -errno; 41960fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee } 42060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(dd); 42160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee closedir(ds); 42260fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee return res; 42360fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee} 42460fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee 42594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint lookup_media_dir(char basepath[PATH_MAX], const char *dir) 42694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 42794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 42894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 42994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 43094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* dirpos = basepath + strlen(basepath); 43194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 43294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(dirpos-1)) != '/') { 43394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = '/'; 43494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dirpos++; 43594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 43694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 43794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Looking up %s in %s\n", dir, basepath)); 43894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Verify the path won't extend beyond our buffer, to avoid 43994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // repeated checking later. 44094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((dirpos-basepath+strlen(dir)) >= (PATH_MAX-1)) { 44194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Path exceeds limit: %s%s", basepath, dir); 44294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 44394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 44494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 44594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // First, can we find this directory with the case that is given? 44694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, dir); 44794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(basepath, &s) >= 0) { 44894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found direct: %s\n", basepath)); 44994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 45094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 45194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 45294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Not found with that case... search through all entries to find 45394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // one that matches regardless of case. 45494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = 0; 45594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 45694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 45794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 45894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 45994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 46194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 46294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (strcasecmp(de->d_name, dir) == 0) { 46394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, de->d_name); 46494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 46594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found search: %s\n", basepath)); 46694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 46794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Couldn't find %s in %s", dir, basepath); 47194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 47294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 47394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 47494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint64_t data_disk_free() 47694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 47794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 47894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (statfs(android_data_dir.path, &sfs) == 0) { 47994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 48094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 48194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't statfs %s: %s\n", android_data_dir.path, strerror(errno)); 48294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 48394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 48494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 48594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 48694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 48794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 48894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 48994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 49094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 49194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 49294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 49394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 49494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 49594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 49694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 49794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 49894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 49994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 50094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 50194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 50294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 50394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 50494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 50594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %d", res, len)); 50694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 50794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 50894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 50994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 51094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 51194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 51294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 51394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 51494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 51594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 51694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 51794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 51894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 51994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* newBlock = malloc(CACHE_BLOCK_SIZE); 52094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 52194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 52294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 52394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 52494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 52594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 52694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 52794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 52894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 52994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 53094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("cache_malloc: ret %p size %d, block=%p, nextPos=%p", 53194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 53294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 53394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 53494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 53594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 53694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 53794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 54094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 54494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 54894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 55092dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 55194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 55494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 55994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 56794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 57494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 57594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 57794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 58094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 58494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 59294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Setting file %p at position %d in array %p", file, 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid add_cache_files(cache_t* cache, const char *basepath, const char *cachedir) 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 73694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("add_cache_files: base=%s cachedir=%s\n", basepath, cachedir)); 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* pathpos; 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirname, basepath); 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos = dirname + strlen(dirname); 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(pathpos-1)) != '/') { 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = '/'; 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos++; 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = 0; 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cachedir != NULL) { 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s/%s", name, cachedir); 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s", name); 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 79594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 79694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 79794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 79894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 79994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 80094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 80194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 80294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 80394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 80494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 80594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 80694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 80794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 80894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 80994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 81094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 81294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 81394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 81494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 81594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 81694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 81994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 82094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 82194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 82294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 82394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 82494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 82594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 82694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 82794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 82894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 82994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 83194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 83394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 83494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 83594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 83694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 83794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 83894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid clear_cache_files(cache_t* cache, int64_t free_size) 84094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 84194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 84294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 84394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 84494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 84592dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 84694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 84794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 84894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 84994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 85094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 85194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 85394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 85494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 85594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 85694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 85794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 86094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 86194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 86294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 86394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 86494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (data_disk_free() > free_size) { 86594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 86694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 86894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 87094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 87194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 87294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 87394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 87494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 87594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 87694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 87794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 87894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 87994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 88194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 88394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 88494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 88594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("clear_cache_files: %d dirs, %d files\n", cache->numDirs, cache->numFiles)); 88794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 88894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 88994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("dir #%d: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 89394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 89494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("file #%d: %p %s time=%d dir=%p\n", i, file, file->name, 89694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 89794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 89894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 89994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 90094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 90194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 90294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 90394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 90494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 90694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 90794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 909c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * Validate that the path is valid in the context of the provided directory. 910c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * The path is allowed to have at most one subdirectory and no indirections 911c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle * to top level directories (i.e. have ".."). 912c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle */ 913c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravlestatic int validate_path(const dir_rec_t* dir, const char* path) { 914c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle size_t dir_len = dir->len; 915c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const char* subdir = strchr(path + dir_len, '/'); 916c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 917c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Only allow the path to have at most one subdirectory. 918c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (subdir != NULL) { 919c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ++subdir; 920c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if (strchr(subdir, '/') != NULL) { 921c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (subdir?)\n", path); 922c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 923c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 924c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 925c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 926c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle // Directories can't have a period directly after the directory markers to prevent "..". 927c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle if ((path[dir_len] == '.') || ((subdir != NULL) && (*subdir == '.'))) { 928c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle ALOGE("invalid apk path '%s' (trickery)\n", path); 929c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return -1; 930c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle } 931c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 932c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return 0; 933c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle} 934c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle 935c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle/** 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 93794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 93894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 94094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 94194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 94494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 945c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return validate_path(android_system_dirs.dirs + i, path); 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 95794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 95994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 96094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 98394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 98594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 99194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 100294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = malloc(dst_size); 100494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 101094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 101194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 101294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 101394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 101494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 101694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 101794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 101994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 102094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 102194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 102394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 102494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 102594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 102694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 102794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 102894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 102994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 103094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 103194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 103294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 103394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 103594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 103694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 103794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 1038fd88ff2edd954117e36372fb095b6f5f35aad0e3Calin Juravle * Check whether path points to a valid path for an APK file. Only one level of 1039fd88ff2edd954117e36372fb095b6f5f35aad0e3Calin Juravle * subdirectory names is allowed. Returns -1 when an invalid path is encountered 1040fd88ff2edd954117e36372fb095b6f5f35aad0e3Calin Juravle * and 0 when a valid path is encountered. 104194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 104294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_apk_path(const char *path) 104394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 1044c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle const dir_rec_t* dir = NULL; 104594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 104694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 1047c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_dir; 104894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 1049c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_app_private_dir; 105094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 1051c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle dir = &android_asec_dir; 105294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 105394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 105494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 105594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 1056c597b6dd895dbb2b28c757ce7a2651b3cdc9b00cCalin Juravle return validate_path(dir, path); 105794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 105894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 105994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 106094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 106194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 106294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 106394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 106494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 106594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 106694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 106794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 106894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 106994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodchar *build_string2(char *s1, char *s2) { 107094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 107194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 107394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 107494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 107594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *result = malloc(len); 107694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 107794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 107894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 107994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 108094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 108294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 108394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodchar *build_string3(char *s1, char *s2, char *s3) { 108594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 108694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 108794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 108894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 108994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 109094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 109194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *result = malloc(len); 109294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 109394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 109594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 109694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 109794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 109894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 109994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 110094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/* Ensure that /data/media directories are prepared for given user. */ 110294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint ensure_media_user_dirs(userid_t userid) { 110394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char media_user_path[PATH_MAX]; 110494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 110594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 110694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Ensure /data/media/<userid> exists 1107abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey create_user_media_path(media_user_path, userid); 110894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fs_prepare_dir(media_user_path, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { 110994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 111094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 111194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 111294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 111394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 1114d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1115095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Leeint ensure_config_user_dirs(userid_t userid) { 1116095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee char config_user_path[PATH_MAX]; 1117095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee char path[PATH_MAX]; 1118095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1119095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // writable by system, readable by any app within the same user 112060fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int uid = multiuser_get_uid(userid, AID_SYSTEM); 112160fd3feecab4336d964ca8e31c7c3220e1afb558Robin Lee const int gid = multiuser_get_uid(userid, AID_EVERYBODY); 1122095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1123095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee // Ensure /data/misc/user/<userid> exists 1124095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee create_user_config_path(config_user_path, userid); 1125095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee if (fs_prepare_dir(config_user_path, 0750, uid, gid) == -1) { 1126095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return -1; 1127095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee } 1128095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1129095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee return 0; 1130095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee} 1131095c763dd9aa26a206d10ab7c1d7e1c569298fb3Robin Lee 1132d93707342a61e66bc3eb2145628158452f577f42Dave Allisonint create_profile_file(const char *pkgname, gid_t gid) { 1133d93707342a61e66bc3eb2145628158452f577f42Dave Allison const char *profile_dir = DALVIK_CACHE_PREFIX "profiles"; 1134d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1135d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1136d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", profile_dir, pkgname); 1137d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1138d93707342a61e66bc3eb2145628158452f577f42Dave Allison // The 'system' user needs to be able to read the profile to determine if dex2oat 1139d93707342a61e66bc3eb2145628158452f577f42Dave Allison // needs to be run. This is done in dalvik.system.DexFile.isDexOptNeededInternal(). So 11400db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // we assign ownership to AID_SYSTEM and ensure it's not world-readable. 1141d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11420db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich int fd = open(profile_file, O_WRONLY | O_CREAT | O_NOFOLLOW | O_CLOEXEC, 0660); 1143d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11440db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // Always set the uid/gid/permissions. The file could have been previously created 11450db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich // with different permissions. 1146d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (fd >= 0) { 11470db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich if (fchown(fd, AID_SYSTEM, gid) < 0) { 1148d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chown profile file '%s': %s\n", profile_file, strerror(errno)); 1149d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1150d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1151d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1152d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1153d93707342a61e66bc3eb2145628158452f577f42Dave Allison 11540db0f97d87bae8118e135d5a30edf7f0146098c0Nick Kralevich if (fchmod(fd, 0660) < 0) { 1155d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chmod profile file '%s': %s\n", profile_file, strerror(errno)); 1156d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1157d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1158d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1159d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1160d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1161d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1162d93707342a61e66bc3eb2145628158452f577f42Dave Allison return 0; 1163d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1164d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1165d93707342a61e66bc3eb2145628158452f577f42Dave Allisonvoid remove_profile_file(const char *pkgname) { 1166d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1167d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", DALVIK_CACHE_PREFIX "profiles", pkgname); 1168d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1169d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1170