utils.cpp revision 3aee2c5c749dc2589f001b26fae1ec958ec89524
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 15294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint create_move_path(char path[PKG_PATH_MAX], 15394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* pkgname, 15494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* leaf, 155abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey userid_t userid) 15694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 15794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((android_data_dir.len + strlen(PRIMARY_USER_PREFIX) + strlen(pkgname) + strlen(leaf) + 1) 15894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood >= PKG_PATH_MAX) { 15994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 16094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 16194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 16294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood sprintf(path, "%s%s%s/%s", android_data_dir.path, PRIMARY_USER_PREFIX, pkgname, leaf); 16394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 16494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 16594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 16694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 16794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether the package name is valid. Returns -1 on error and 16894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success. 16994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 17094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint is_valid_package_name(const char* pkgname) { 17194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *x = pkgname; 17294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int alpha = -1; 17394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 17494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 17594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (isalnum(*x) || (*x == '_')) { 17694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* alphanumeric or underscore are fine */ 17794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '.') { 17894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((x == pkgname) || (x[1] == '.') || (x[1] == 0)) { 17994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* periods must not be first, last, or doubled */ 18094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 18194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 18294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 18394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (*x == '-') { 18494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* Suffix -X is fine to let versioning of packages. 18594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood But whatever follows should be alphanumeric.*/ 18694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood alpha = 1; 18794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 18894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* anything not A-Z, a-z, 0-9, _, or . is invalid */ 18994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s'\n", pkgname); 19094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 19194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 19294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 19394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 19494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 19594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 19694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alpha == 1) { 19794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip current character 19894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 19994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (*x) { 20094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!isalnum(*x)) { 20194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid package name '%s' should include only numbers after -\n", pkgname); 20294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 20394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood x++; 20594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 20794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 20894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 20994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 21094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2113aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamathstatic int _delete_dir_contents(DIR *d, 2123aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char *name, const int is_dir)) 21394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 21494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int result = 0; 21594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 21694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 21794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 21894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(d); 21994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 22094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return -1; 22194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 22294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 22394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 22494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 2253aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath /* check using the exclusion predicate, if provided */ 2263aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (exclusion_predicate && exclusion_predicate(name, (de->d_type == DT_DIR))) { 2273aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath continue; 2283aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath } 22994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 23194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int r, subfd; 23294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 23394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 23494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 23594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 23694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 23794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 23894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 23994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 24094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 24194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 24294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 24394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 24494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 24594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 24694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 24794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 24894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 24994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 25094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 25194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 25294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 2533aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath if (_delete_dir_contents(subdir, exclusion_predicate)) { 25494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 25594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 25694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 25794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 25894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 25994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 26094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 26294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 26394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 26494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood result = -1; 26594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 26894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 26994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 27094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 27194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 27294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents(const char *pathname, 27394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int also_delete_dir, 2743aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath int (*exclusion_predicate)(const char*, const int)) 27594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 27694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int res = 0; 27794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 27894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 27994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(pathname); 28094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 28194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't opendir %s: %s\n", pathname, strerror(errno)); 28294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -errno; 28394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 2843aee2c5c749dc2589f001b26fae1ec958ec89524Narayan Kamath res = _delete_dir_contents(d, exclusion_predicate); 28594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 28694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (also_delete_dir) { 28794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(pathname)) { 28894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", pathname, strerror(errno)); 28994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = -1; 29094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 29294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 29394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 29494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 29594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint delete_dir_contents_fd(int dfd, const char *name) 29694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 29794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int fd, res; 29894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 29994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 30094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood fd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 30194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fd < 0) { 30294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 30394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 30494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 30594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = fdopendir(fd); 30694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 30794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 30894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(fd); 30994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 31094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 31194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = _delete_dir_contents(d, 0); 31294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 31394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 31494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 31594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 31694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint lookup_media_dir(char basepath[PATH_MAX], const char *dir) 31794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 31894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 31994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 32094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 32194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* dirpos = basepath + strlen(basepath); 32294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(dirpos-1)) != '/') { 32494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = '/'; 32594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dirpos++; 32694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 32794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 32894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Looking up %s in %s\n", dir, basepath)); 32994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Verify the path won't extend beyond our buffer, to avoid 33094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // repeated checking later. 33194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((dirpos-basepath+strlen(dir)) >= (PATH_MAX-1)) { 33294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Path exceeds limit: %s%s", basepath, dir); 33394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 33494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 33594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 33694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // First, can we find this directory with the case that is given? 33794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, dir); 33894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(basepath, &s) >= 0) { 33994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found direct: %s\n", basepath)); 34094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 34194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 34294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 34394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Not found with that case... search through all entries to find 34494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // one that matches regardless of case. 34594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dirpos = 0; 34694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 34794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 34894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 34994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 35094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 35294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 35394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (strcasecmp(de->d_name, dir) == 0) { 35494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirpos, de->d_name); 35594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 35694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Found search: %s\n", basepath)); 35794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 35894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 35994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 36094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 36194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Couldn't find %s in %s", dir, basepath); 36294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 36394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 36494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 36594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 36694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint64_t data_disk_free() 36794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 36894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct statfs sfs; 36994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (statfs(android_data_dir.path, &sfs) == 0) { 37094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return sfs.f_bavail * sfs.f_bsize; 37194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 37294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't statfs %s: %s\n", android_data_dir.path, strerror(errno)); 37394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 37494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 37594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 37694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 37794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodcache_t* start_cache_collection() 37894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 37994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_t* cache = (cache_t*)calloc(1, sizeof(cache_t)); 38094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return cache; 38194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 38294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 38394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood#define CACHE_BLOCK_SIZE (512*1024) 38494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 38594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_malloc(cache_t* cache, size_t len) 38694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 38794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood len = (len+3)&~3; 38894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (len > (CACHE_BLOCK_SIZE/2)) { 38994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // It doesn't make sense to try to put this allocation into one 39094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // of our blocks, because it is so big. Instead, make a new dedicated 39194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // block for it. 39294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = (int8_t*)malloc(len+sizeof(void*)); 39394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (res == NULL) { 39494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 39594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 39694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated large cache mem block: %p size %d", res, len)); 39794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Link it into our list of blocks, not disrupting the current one. 39894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL) { 39994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = NULL; 40094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = res; 40194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 40294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)res = *(void**)cache->memBlocks; 40394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)cache->memBlocks = res; 40494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 40594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res + sizeof(void*); 40694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 40794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* res = cache->curMemBlockAvail; 40894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* nextPos = res + len; 40994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->memBlocks == NULL || nextPos > cache->curMemBlockEnd) { 41094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int8_t* newBlock = malloc(CACHE_BLOCK_SIZE); 41194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newBlock == NULL) { 41294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 41394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 41494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Allocated new cache mem block: %p", newBlock)); 41594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *(void**)newBlock = cache->memBlocks; 41694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->memBlocks = newBlock; 41794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res = cache->curMemBlockAvail = newBlock + sizeof(void*); 41894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockEnd = newBlock + CACHE_BLOCK_SIZE; 41994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood nextPos = res + len; 42094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 42194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("cache_malloc: ret %p size %d, block=%p, nextPos=%p", 42294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood res, len, cache->memBlocks, nextPos)); 42394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->curMemBlockAvail = nextPos; 42494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return res; 42594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 42694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 42794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void* _cache_realloc(cache_t* cache, void* cur, size_t origLen, size_t len) 42894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 42994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This isn't really a realloc, but it is good enough for our purposes here. 43094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* alloc = _cache_malloc(cache, len); 43194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (alloc != NULL && cur != NULL) { 43294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood memcpy(alloc, cur, origLen < len ? origLen : len); 43394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 43494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return alloc; 43594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 43694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 43794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void _inc_num_cache_collected(cache_t* cache) 43894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 43994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numCollected++; 44094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((cache->numCollected%20000) == 0) { 44192dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache so far: %zd directories, %zd files", 44294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 44394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 44494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 44594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 44694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_dir_t* _add_cache_dir_t(cache_t* cache, cache_dir_t* parent, const char *name) 44794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 44894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 44994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = (cache_dir_t*)_cache_malloc(cache, sizeof(cache_dir_t)+nameLen+1); 45094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir != NULL) { 45194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent = parent; 45294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount = 0; 45394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->hiddenCount = 0; 45494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 0; 45594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dir->name, name); 45694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numDirs >= cache->availDirs) { 45794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availDirs < 1000 ? 1000 : cache->availDirs*2; 45894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t** newDirs = (cache_dir_t**)_cache_realloc(cache, cache->dirs, 45994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs*sizeof(cache_dir_t*), newAvail*sizeof(cache_dir_t*)); 46094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newDirs == NULL) { 46194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache dirs array for %s\n", name); 46294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 46394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availDirs = newAvail; 46594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs = newDirs; 46694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 46794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->dirs[cache->numDirs] = dir; 46894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs++; 46994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (parent != NULL) { 47094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parent->childCount++; 47194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 47294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 47394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 47494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_dir_t for %s\n", name); 47594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 47694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return dir; 47794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 47894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 47994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic cache_file_t* _add_cache_file_t(cache_t* cache, cache_dir_t* dir, time_t modTime, 48094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name) 48194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 48294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t nameLen = strlen(name); 48394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = (cache_file_t*)_cache_malloc(cache, sizeof(cache_file_t)+nameLen+1); 48494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file != NULL) { 48594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir = dir; 48694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->modTime = modTime; 48794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(file->name, name); 48894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cache->numFiles >= cache->availFiles) { 48994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t newAvail = cache->availFiles < 1000 ? 1000 : cache->availFiles*2; 49094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t** newFiles = (cache_file_t**)_cache_realloc(cache, cache->files, 49194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles*sizeof(cache_file_t*), newAvail*sizeof(cache_file_t*)); 49294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (newFiles == NULL) { 49394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure growing cache file array for %s\n", name); 49494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return NULL; 49594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 49694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->availFiles = newAvail; 49794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files = newFiles; 49894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 49994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Setting file %p at position %d in array %p", file, 50094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles, cache->files)); 50194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->files[cache->numFiles] = file; 50294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numFiles++; 50394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->childCount++; 50494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _inc_num_cache_collected(cache); 50594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 50694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Failure allocating cache_file_t for %s\n", name); 50794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 50894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return file; 50994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 51094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 51194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int _add_cache_files(cache_t *cache, cache_dir_t *parentDir, const char *dirName, 51294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* dir, char *pathBase, char *pathPos, size_t pathAvailLen) 51394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 51494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 51594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* cacheDir = NULL; 51694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int dfd; 51794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 51894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("_add_cache_files: parent=%p dirName=%s dir=%p pathBase=%s", 51994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood parentDir, dirName, dir, pathBase)); 52094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 52194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dfd = dirfd(dir); 52294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 52394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dfd < 0) return 0; 52494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 52594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Sub-directories always get added to the data structure, so if they 52694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // are empty we will know about them to delete them later. 52794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 52894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 52994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(dir))) { 53094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 53194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 53294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 53394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int subfd; 53494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *subdir; 53594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 53694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 53794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 53894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 53994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 54094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 54294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subfd = openat(dfd, name, O_RDONLY | O_DIRECTORY); 54394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subfd < 0) { 54494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't openat %s: %s\n", name, strerror(errno)); 54594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 54694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 54794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = fdopendir(subfd); 54894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir == NULL) { 54994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't fdopendir %s: %s\n", name, strerror(errno)); 55094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood close(subfd); 55194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 55294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 55394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 55494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 55594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 55694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 55794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Update pathBase for the new path... this may change dirName 55894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 55994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 56094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 56194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting dir %s\n", pathBase)); 56294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 56394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, cacheDir, name, subdir, pathBase, 56494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathPos+finallen, pathAvailLen-finallen); 56594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 56694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 56794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this directory. 56894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache dir %s truncated in path %s; deleting dir\n", 56994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 57094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _delete_dir_contents(subdir, NULL); 57194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, AT_REMOVEDIR) < 0) { 57294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s: %s\n", name, strerror(errno)); 57394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 57694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 57794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (de->d_type == DT_REG) { 57894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Skip files that start with '.'; they will be deleted if 57994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // their entire directory is deleted. This allows for metadata 58094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // like ".nomedia" to remain in the directory until the entire 58194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // directory is deleted. 58294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir == NULL) { 58394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir = _add_cache_dir_t(cache, parentDir, dirName); 58494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 58694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 58794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood continue; 58894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 58994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cacheDir != NULL) { 59094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Build final full path for file... this may change dirName 59194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // if that is also pointing to the path, but we are done with it 59294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // now. 59394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t finallen = snprintf(pathPos, pathAvailLen, "/%s", name); 59494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Collecting file %s\n", pathBase)); 59594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (finallen < pathAvailLen) { 59694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct stat s; 59794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (stat(pathBase, &s) >= 0) { 59894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_file_t(cache, cacheDir, s.st_mtime, name); 59994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 60094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Unable to stat cache file %s; deleting\n", pathBase); 60194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(pathBase) < 0) { 60294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", pathBase, strerror(errno)); 60394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 60594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 60694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Whoops, the final path is too long! We'll just delete 60794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // this file. 60894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Cache file %s truncated in path %s; deleting\n", 60994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood name, pathBase); 61094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlinkat(dfd, name, 0) < 0) { 61194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathPos = 0; 61294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlinkat %s in %s: %s\n", name, pathBase, 61394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strerror(errno)); 61494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 61794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 61894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cacheDir->hiddenCount++; 61994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 62194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 62294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 62394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 62494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid add_cache_files(cache_t* cache, const char *basepath, const char *cachedir) 62594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 62694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR *d; 62794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood struct dirent *de; 62894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char dirname[PATH_MAX]; 62994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("add_cache_files: base=%s cachedir=%s\n", basepath, cachedir)); 63194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood d = opendir(basepath); 63394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (d == NULL) { 63494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 63594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 63694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 63794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while ((de = readdir(d))) { 63894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (de->d_type == DT_DIR) { 63994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood DIR* subdir; 64094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char *name = de->d_name; 64194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char* pathpos; 64294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* always skip "." and ".." */ 64494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[0] == '.') { 64594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (name[1] == 0) continue; 64694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((name[1] == '.') && (name[2] == 0)) continue; 64794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 64894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 64994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(dirname, basepath); 65094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos = dirname + strlen(dirname); 65194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((*(pathpos-1)) != '/') { 65294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = '/'; 65394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pathpos++; 65494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pathpos = 0; 65594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 65694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (cachedir != NULL) { 65794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s/%s", name, cachedir); 65894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 65994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood snprintf(pathpos, sizeof(dirname)-(pathpos-dirname), "%s", name); 66094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 66194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Adding cache files from dir: %s\n", dirname)); 66294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood subdir = opendir(dirname); 66394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (subdir != NULL) { 66494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dirnameLen = strlen(dirname); 66594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood _add_cache_files(cache, NULL, dirname, subdir, dirname, dirname+dirnameLen, 66694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood PATH_MAX - dirnameLen); 66794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(subdir); 66894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 66994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 67194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 67294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood closedir(d); 67394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 67494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 67594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic char *create_dir_path(char path[PATH_MAX], cache_dir_t* dir) 67694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 67794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *pos = path; 67894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 67994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos = create_dir_path(path, dir->parent); 68094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 68194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Note that we don't need to worry about going beyond the buffer, 68294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // since when we were constructing the cache entries our maximum 68394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // buffer size for full paths was PATH_MAX. 68494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(pos, dir->name); 68594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos += strlen(pos); 68694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = '/'; 68794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood pos++; 68894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *pos = 0; 68994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return pos; 69094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 69194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 69294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic void delete_cache_dir(char path[PATH_MAX], cache_dir_t* dir) 69394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 69494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent != NULL) { 69594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 69694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL DIR %s\n", path); 69794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->hiddenCount <= 0) { 69894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rmdir(path)) { 69994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't rmdir %s: %s\n", path, strerror(errno)); 70094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 70194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 70394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // The directory contains hidden files so we need to delete 70494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // them along with the directory itself. 70594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (delete_dir_contents(path, 1, NULL)) { 70694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 70794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 70994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->parent->childCount--; 71094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir->deleted = 1; 71194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->parent->childCount <= 0) { 71294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir->parent); 71394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 71494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (dir->hiddenCount > 0) { 71594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // This is a root directory, but it has hidden files. Get rid of 71694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // all of those files, but not the directory itself. 71794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood create_dir_path(path, dir); 71894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL CONTENTS %s\n", path); 71994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_dir_contents(path, 0, NULL); 72094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 72194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 72294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 72394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodstatic int cache_modtime_sort(const void *lhsP, const void *rhsP) 72494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 72594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *lhs = *(const cache_file_t**)lhsP; 72694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const cache_file_t *rhs = *(const cache_file_t**)rhsP; 72794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return lhs->modTime < rhs->modTime ? -1 : (lhs->modTime > rhs->modTime ? 1 : 0); 72894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 72994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid clear_cache_files(cache_t* cache, int64_t free_size) 73194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 73294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 73394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int skip = 0; 73494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 73594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73692dc3fc52cf097bd105460cf377779bdcf146d62Mark Salyzyn ALOGI("Collected cache files: %zd directories, %zd files", 73794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache->numDirs, cache->numFiles); 73894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 73994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Sorting files...")); 74094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood qsort(cache->files, cache->numFiles, sizeof(cache_file_t*), 74194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_modtime_sort); 74294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 74394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Cleaning empty directories...")); 74494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=cache->numDirs; i>0; i--) { 74594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i-1]; 74694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dir->childCount <= 0 && !dir->deleted) { 74794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, dir); 74894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 74994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 75194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Trimming files...")); 75294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 75394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip++; 75494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (skip > 10) { 75594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (data_disk_free() > free_size) { 75694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return; 75794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 75894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood skip = 0; 75994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 76194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(create_dir_path(path, file->dir), file->name); 76294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("DEL (mod %d) %s\n", (int)file->modTime, path); 76394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (unlink(path) < 0) { 76494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Couldn't unlink %s: %s\n", path, strerror(errno)); 76594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 76694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood file->dir->childCount--; 76794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (file->dir->childCount <= 0) { 76894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood delete_cache_dir(path, file->dir); 76994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 77194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 77294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 77394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodvoid finish_cache_collection(cache_t* cache) 77494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 77594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 77694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 77794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("clear_cache_files: %d dirs, %d files\n", cache->numDirs, cache->numFiles)); 77894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 77994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numDirs; i++) { 78094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_dir_t* dir = cache->dirs[i]; 78194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("dir #%d: %p %s parent=%p\n", i, dir, dir->name, dir->parent); 78294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 78394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY( 78494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i=0; i<cache->numFiles; i++) { 78594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood cache_file_t* file = cache->files[i]; 78694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGI("file #%d: %p %s time=%d dir=%p\n", i, file, file->name, 78794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood (int)file->modTime, file->dir); 78894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood }) 78994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* block = cache->memBlocks; 79094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood while (block != NULL) { 79194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood void* nextBlock = *(void**)block; 79294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood CACHE_NOISY(ALOGI("Freeing cache mem block: %p", block)); 79394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(block); 79494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood block = nextBlock; 79594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 79694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood free(cache); 79794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 79894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 79994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 80094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Checks whether a path points to a system app (.apk file). Returns 0 80194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * if it is a system app or -1 if it is not. 80294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 80394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_system_app_path(const char* path) { 80494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t i; 80594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 80694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood for (i = 0; i < android_system_dirs.count; i++) { 80794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dir_len = android_system_dirs.dirs[i].len; 80894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_system_dirs.dirs[i].path, dir_len)) { 80994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[dir_len] == '.' || strchr(path + dir_len, '/') != NULL) { 81094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid system apk path '%s' (trickery)\n", path); 81194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 81294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 81494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 81694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 81794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 81894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 81994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 82094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 82194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Get the contents of a environment variable that contains a path. Caller 82294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * owns the string that is inserted into the directory record. Returns 82394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 0 on success and -1 on error. 82494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 82594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_env(dir_rec_t* rec, const char* var) { 82694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const char* path = getenv(var); 82794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int ret = get_path_from_string(rec, path); 82894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0) { 82994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGW("Problem finding value for environment variable %s\n", var); 83094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 83194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return ret; 83294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 83394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 83494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 83594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Puts the string into the record as a directory. Appends '/' to the end 83694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * of all paths. Caller owns the string that is inserted into the directory 83794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * record. A null value will result in an error. 83894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * 83994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Returns 0 on success and -1 on error. 84094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 84194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint get_path_from_string(dir_rec_t* rec, const char* path) { 84294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path == NULL) { 84394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 84494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 84594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t path_len = strlen(path); 84694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path_len <= 0) { 84794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 84894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 84994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Make sure path is absolute. 85194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[0] != '/') { 85294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 85394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 85494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[path_len - 1] == '/') { 85694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path ends with a forward slash. Make our own copy. 85794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 85894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = strdup(path); 85994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 86094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 86194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 86294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 86394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = path_len; 86494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 86594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Path does not end with a slash. Generate a new string. 86694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *dst; 86794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 86894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Add space for slash and terminating null. 86994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dst_size = path_len + 2; 87094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->path = malloc(dst_size); 87294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (rec->path == NULL) { 87394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 87494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 87594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst = rec->path; 87794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 87894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (append_and_increment(&dst, path, &dst_size) < 0 87994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || append_and_increment(&dst, "/", &dst_size)) { 88094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Error canonicalizing path"); 88194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 88294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 88494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood rec->len = dst - rec->path; 88594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 88794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 88894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 88994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 89094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint copy_and_append(dir_rec_t* dst, const dir_rec_t* src, const char* suffix) { 89194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->len = src->len + strlen(suffix); 89294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood const size_t dstSize = dst->len + 1; 89394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dst->path = (char*) malloc(dstSize); 89494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 89594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (dst->path == NULL 89694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || snprintf(dst->path, dstSize, "%s%s", src->path, suffix) 89794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood != (ssize_t) dst->len) { 89894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("Could not allocate memory to hold appended path; aborting\n"); 89994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 90094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 90194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 90394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 90494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 90594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/** 90694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Check whether path points to a valid path for an APK file. An ASEC 90794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * directory is allowed to have one level of subdirectory names. Returns -1 90894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * when an invalid path is encountered and 0 when a valid path is encountered. 90994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 91094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint validate_apk_path(const char *path) 91194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood{ 91294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int allowsubdir = 0; 91394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *subdir = NULL; 91494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t dir_len; 91594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood size_t path_len; 91694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 91794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!strncmp(path, android_app_dir.path, android_app_dir.len)) { 91894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir_len = android_app_dir.len; 91994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_app_private_dir.path, android_app_private_dir.len)) { 92094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir_len = android_app_private_dir.len; 92194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else if (!strncmp(path, android_asec_dir.path, android_asec_dir.len)) { 92294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood dir_len = android_asec_dir.len; 92394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood allowsubdir = 1; 92494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } else { 92594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid apk path '%s' (bad prefix)\n", path); 92694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 92794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 92894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 92994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood path_len = strlen(path); 93094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 93194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* 93294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Only allow the path to have a subdirectory if it's been marked as being allowed. 93394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 93494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if ((subdir = strchr(path + dir_len, '/')) != NULL) { 93594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ++subdir; 93694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (!allowsubdir 93794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || (path_len > (size_t) (subdir - path) && (strchr(subdir, '/') != NULL))) { 93894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid apk path '%s' (subdir?)\n", path); 93994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 94094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 94294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 94394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood /* 94494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * Directories can't have a period directly after the directory markers 94594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood * to prevent ".." 94694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood */ 94794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (path[dir_len] == '.' 94894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood || (subdir != NULL && ((*subdir == '.') || (strchr(subdir, '/') != NULL)))) { 94994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ALOGE("invalid apk path '%s' (trickery)\n", path); 95094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 95194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 95294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 95494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 95594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 95694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint append_and_increment(char** dst, const char* src, size_t* dst_size) { 95794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood ssize_t ret = strlcpy(*dst, src, *dst_size); 95894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (ret < 0 || (size_t) ret >= *dst_size) { 95994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 96094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 96194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst += ret; 96294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood *dst_size -= ret; 96394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 96494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 96594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 96694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodchar *build_string2(char *s1, char *s2) { 96794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL) return NULL; 96894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 96994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 97094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 97194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + 1; 97294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *result = malloc(len); 97394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 97494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 97694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 97794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 97894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 97994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 98094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodchar *build_string3(char *s1, char *s2, char *s3) { 98294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (s1 == NULL || s2 == NULL || s3 == NULL) return NULL; 98394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 98494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s1 = strlen(s1); 98594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s2 = strlen(s2); 98694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len_s3 = strlen(s3); 98794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood int len = len_s1 + len_s2 + len_s3 + 1; 98894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char *result = malloc(len); 98994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (result == NULL) return NULL; 99094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result, s1); 99294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1, s2); 99394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood strcpy(result + len_s1 + len_s2, s3); 99494afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return result; 99694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 99794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 99894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood/* Ensure that /data/media directories are prepared for given user. */ 99994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwoodint ensure_media_user_dirs(userid_t userid) { 100094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char media_user_path[PATH_MAX]; 100194afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood char path[PATH_MAX]; 100294afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100394afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood // Ensure /data/media/<userid> exists 1004abe4fe5b46157ecd2a52d28abf938c816c3ce878Jeff Sharkey create_user_media_path(media_user_path, userid); 100594afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood if (fs_prepare_dir(media_user_path, 0770, AID_MEDIA_RW, AID_MEDIA_RW) == -1) { 100694afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return -1; 100794afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood } 100894afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood 100994afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood return 0; 101094afecf4b6f437b3ee9a076242402e421c6c07a6Mike Lockwood} 1011d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1012d93707342a61e66bc3eb2145628158452f577f42Dave Allisonint create_profile_file(const char *pkgname, gid_t gid) { 1013d93707342a61e66bc3eb2145628158452f577f42Dave Allison const char *profile_dir = DALVIK_CACHE_PREFIX "profiles"; 1014d93707342a61e66bc3eb2145628158452f577f42Dave Allison struct stat profileStat; 1015d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1016d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1017d93707342a61e66bc3eb2145628158452f577f42Dave Allison // If we don't have a profile directory under dalvik-cache we need to create one. 1018d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (stat(profile_dir, &profileStat) < 0) { 1019d93707342a61e66bc3eb2145628158452f577f42Dave Allison // Create the profile directory under dalvik-cache. 1020d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (mkdir(profile_dir, 0711) < 0) { 1021d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot make profile dir '%s': %s\n", profile_dir, strerror(errno)); 1022d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1023d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1024d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1025d93707342a61e66bc3eb2145628158452f577f42Dave Allison // Make the profile directory write-only for group and other. Owner can rwx it. 1026d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (chmod(profile_dir, 0711) < 0) { 1027d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chown profile dir '%s': %s\n", profile_dir, strerror(errno)); 1028a240733137d1a0c006ca68415a0f8ed28cc4b11aStephen Smalley rmdir(profile_dir); 1029a240733137d1a0c006ca68415a0f8ed28cc4b11aStephen Smalley return -1; 1030a240733137d1a0c006ca68415a0f8ed28cc4b11aStephen Smalley } 1031a240733137d1a0c006ca68415a0f8ed28cc4b11aStephen Smalley 1032a240733137d1a0c006ca68415a0f8ed28cc4b11aStephen Smalley if (selinux_android_restorecon(profile_dir, 0) < 0) { 1033a240733137d1a0c006ca68415a0f8ed28cc4b11aStephen Smalley ALOGE("cannot restorecon profile dir '%s': %s\n", profile_dir, strerror(errno)); 1034a240733137d1a0c006ca68415a0f8ed28cc4b11aStephen Smalley rmdir(profile_dir); 1035d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1036d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1037d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1038d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1039d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", profile_dir, pkgname); 1040d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1041d93707342a61e66bc3eb2145628158452f577f42Dave Allison // The 'system' user needs to be able to read the profile to determine if dex2oat 1042d93707342a61e66bc3eb2145628158452f577f42Dave Allison // needs to be run. This is done in dalvik.system.DexFile.isDexOptNeededInternal(). So 1043d93707342a61e66bc3eb2145628158452f577f42Dave Allison // we make it world readable. Not a problem since the dalvik cache is world 1044d93707342a61e66bc3eb2145628158452f577f42Dave Allison // readable anyway. 1045d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1046d93707342a61e66bc3eb2145628158452f577f42Dave Allison int fd = open(profile_file, O_WRONLY | O_CREAT | O_EXCL | O_NOFOLLOW, 0664); 1047d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1048d93707342a61e66bc3eb2145628158452f577f42Dave Allison // Open will fail if the file already exists. We want to ignore that. 1049d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (fd >= 0) { 1050d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (fchown(fd, -1, gid) < 0) { 1051d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chown profile file '%s': %s\n", profile_file, strerror(errno)); 1052d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1053d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1054d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1055d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1056d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1057d93707342a61e66bc3eb2145628158452f577f42Dave Allison if (fchmod(fd, 0664) < 0) { 1058d93707342a61e66bc3eb2145628158452f577f42Dave Allison ALOGE("cannot chmod profile file '%s': %s\n", profile_file, strerror(errno)); 1059d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1060d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1061d93707342a61e66bc3eb2145628158452f577f42Dave Allison return -1; 1062d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1063d93707342a61e66bc3eb2145628158452f577f42Dave Allison close(fd); 1064d93707342a61e66bc3eb2145628158452f577f42Dave Allison } 1065d93707342a61e66bc3eb2145628158452f577f42Dave Allison return 0; 1066d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1067d93707342a61e66bc3eb2145628158452f577f42Dave Allison 1068d93707342a61e66bc3eb2145628158452f577f42Dave Allisonvoid remove_profile_file(const char *pkgname) { 1069d93707342a61e66bc3eb2145628158452f577f42Dave Allison char profile_file[PKG_PATH_MAX]; 1070d93707342a61e66bc3eb2145628158452f577f42Dave Allison snprintf(profile_file, sizeof(profile_file), "%s/%s", DALVIK_CACHE_PREFIX "profiles", pkgname); 1071d93707342a61e66bc3eb2145628158452f577f42Dave Allison unlink(profile_file); 1072d93707342a61e66bc3eb2145628158452f577f42Dave Allison} 1073