property_service.c revision dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0
1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <ctype.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <fcntl.h> 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdarg.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <dirent.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <limits.h> 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 28dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/misc.h> 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/sockets.h> 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/ashmem.h> 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_ 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/_system_properties.h> 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/socket.h> 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/un.h> 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/select.h> 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <netinet/in.h> 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/mman.h> 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/atomics.h> 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <private/android_filesystem_config.h> 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "property_service.h" 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include "init.h" 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define PERSISTENT_PROPERTY_DIR "/data/property" 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int persistent_properties_loaded = 0; 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* White list of permissions for setting property services. */ 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstruct { 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *prefix; 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int uid; 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} property_perms[] = { 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "net.rmnet0.", AID_RADIO }, 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "net.gprs.", AID_RADIO }, 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "ril.", AID_RADIO }, 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "gsm.", AID_RADIO }, 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "net.dns", AID_RADIO }, 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "net.", AID_SYSTEM }, 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "dev.", AID_SYSTEM }, 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "runtime.", AID_SYSTEM }, 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "hw.", AID_SYSTEM }, 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "sys.", AID_SYSTEM }, 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "service.", AID_SYSTEM }, 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "wlan.", AID_SYSTEM }, 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "dhcp.", AID_SYSTEM }, 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "dhcp.", AID_DHCP }, 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "debug.", AID_SHELL }, 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "log.", AID_SHELL }, 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "persist.sys.", AID_SYSTEM }, 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { "persist.service.", AID_SYSTEM }, 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project { NULL, 0 } 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project}; 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * White list of UID that are allowed to start/stop services. 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Currently there are no user apps that require. 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstruct { 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *service; 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned int uid; 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} control_perms[] = { 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project {NULL, 0 } 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project}; 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projecttypedef struct { 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project void *data; 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project size_t size; 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} workspace; 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int init_workspace(workspace *w, size_t size) 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project void *data; 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = ashmem_create_region("system_properties", size); 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd < 0) 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(data == MAP_FAILED) 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project goto out; 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* allow the wolves we share with to do nothing but read */ 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ashmem_set_prot_region(fd, PROT_READ); 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project w->data = data; 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project w->size = size; 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project w->fd = fd; 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectout: 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* (8 header words + 247 toc words) = 1020 bytes */ 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 1024 bytes header and toc + 247 prop_infos @ 128 bytes = 32640 bytes */ 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define PA_COUNT_MAX 247 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define PA_INFO_START 1024 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define PA_SIZE 32768 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic workspace pa_workspace; 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic prop_info *pa_info_array; 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectextern prop_area *__system_property_area__; 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int init_property_area(void) 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prop_area *pa; 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(pa_info_array) 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(init_workspace(&pa_workspace, PA_SIZE)) 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(pa_workspace.fd, F_SETFD, FD_CLOEXEC); 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa_info_array = (void*) (((char*) pa_workspace.data) + PA_INFO_START); 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa = pa_workspace.data; 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(pa, 0, PA_SIZE); 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa->magic = PROP_AREA_MAGIC; 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa->version = PROP_AREA_VERSION; 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* plug into the lib property services */ 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __system_property_area__ = pa; 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void update_prop_info(prop_info *pi, const char *value, unsigned len) 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pi->serial = pi->serial | 1; 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memcpy(pi->value, value, len + 1); 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pi->serial = (len << 24) | ((pi->serial + 1) & 0xffffff); 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __futex_wake(&pi->serial, INT32_MAX); 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int property_write(prop_info *pi, const char *value) 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int valuelen = strlen(value); 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(valuelen >= PROP_VALUE_MAX) return -1; 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project update_prop_info(pi, value, valuelen); 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Checks permissions for starting/stoping system services. 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * AID_SYSTEM and AID_ROOT are always allowed. 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Returns 1 if uid allowed, 0 otherwise. 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int check_control_perms(const char *name, int uid) { 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (uid == AID_SYSTEM || uid == AID_ROOT) 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 1; 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Search the ACL */ 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; control_perms[i].service; i++) { 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strcmp(control_perms[i].service, name) == 0) { 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (control_perms[i].uid == uid) 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 1; 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Checks permissions for setting system properties. 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Returns 1 if uid allowed, 0 otherwise. 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int check_perms(const char *name, unsigned int uid) 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int i; 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (uid == 0) 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 1; 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strncmp(name, "ro.", 3)) 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project name +=3; 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (i = 0; property_perms[i].prefix; i++) { 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int tmp; 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strncmp(property_perms[i].prefix, name, 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strlen(property_perms[i].prefix)) == 0) { 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_perms[i].uid == uid) { 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 1; 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectconst char* property_get(const char *name) 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prop_info *pi; 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(strlen(name) >= PROP_NAME_MAX) return 0; 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pi = (prop_info*) __system_property_find(name); 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(pi != 0) { 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return pi->value; 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void write_peristent_property(const char *name, const char *value) 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *tempPath = PERSISTENT_PROPERTY_DIR "/.temp"; 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char path[PATH_MAX]; 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, length; 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), "%s/%s", PERSISTENT_PROPERTY_DIR, name); 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(tempPath, O_WRONLY|O_CREAT|O_TRUNC, 0600); 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd < 0) { 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Unable to write persistent property to temp file %s errno: %d\n", tempPath, errno); 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write(fd, value, strlen(value)); 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (rename(tempPath, path)) { 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unlink(tempPath); 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Unable to rename persistent property file %s to %s\n", tempPath, path); 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint property_set(const char *name, const char *value) 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prop_area *pa; 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prop_info *pi; 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int namelen = strlen(name); 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int valuelen = strlen(value); 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(namelen >= PROP_NAME_MAX) return -1; 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(valuelen >= PROP_VALUE_MAX) return -1; 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(namelen < 1) return -1; 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pi = (prop_info*) __system_property_find(name); 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(pi != 0) { 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* ro.* properties may NEVER be modified once set */ 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(!strncmp(name, "ro.", 3)) return -1; 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa = __system_property_area__; 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project update_prop_info(pi, value, valuelen); 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa->serial++; 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __futex_wake(&pa->serial, INT32_MAX); 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa = __system_property_area__; 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(pa->count == PA_COUNT_MAX) return -1; 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pi = pa_info_array + pa->count; 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pi->serial = (valuelen << 24); 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memcpy(pi->name, name, namelen + 1); 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memcpy(pi->value, value, valuelen + 1); 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa->toc[pa->count] = 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (namelen << 24) | (((unsigned) pi) - ((unsigned) pa)); 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa->count++; 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project pa->serial++; 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __futex_wake(&pa->serial, INT32_MAX); 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* If name starts with "net." treat as a DNS property. */ 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strncmp("net.", name, sizeof("net.") - 1) == 0) { 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strcmp("net.change", name) == 0) { 300dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * The 'net.change' property is a special property used track when any 304dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 'net.*' property name is updated. It is _ONLY_ updated here. Its value 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * contains the last updated 'net.*' property. 306dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 307dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set("net.change", name); 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else if (persistent_properties_loaded && 309dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncmp("persist.", name, sizeof("persist.") - 1) == 0) { 310dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Don't write properties to disk until after we have read all default properties 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * to prevent them from being overwritten by default values. 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project write_peristent_property(name, value); 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 316dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_changed(name, value); 317dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 318dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 319dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 320dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int property_list(void (*propfn)(const char *key, const char *value, void *cookie), 321dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project void *cookie) 322dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 323dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char name[PROP_NAME_MAX]; 324dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROP_VALUE_MAX]; 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const prop_info *pi; 326dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned n; 327dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 328dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for(n = 0; (pi = __system_property_find_nth(n)); n++) { 329dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project __system_property_read(pi, name, value); 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project propfn(name, value, cookie); 331dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 332dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 334dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid handle_property_set_fd(int fd) 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project prop_msg msg; 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int s; 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int r; 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int res; 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ucred cr; 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_un addr; 343dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project socklen_t addr_size = sizeof(addr); 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project socklen_t cr_size = sizeof(cr); 345dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((s = accept(fd, (struct sockaddr *) &addr, &addr_size)) < 0) { 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Check socket options here */ 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &cr, &cr_size) < 0) { 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(s); 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Unable to recieve socket options\n"); 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r = recv(s, &msg, sizeof(msg), 0); 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(s); 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(r != sizeof(prop_msg)) { 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("sys_prop: mis-match msg size recieved: %d expected: %d\n", 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r, sizeof(prop_msg)); 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return; 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project switch(msg.cmd) { 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project case PROP_MSG_SETPROP: 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.name[PROP_NAME_MAX-1] = 0; 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.value[PROP_VALUE_MAX-1] = 0; 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(memcmp(msg.name,"ctl.",4) == 0) { 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (check_control_perms(msg.value, cr.uid)) { 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project handle_control_message((char*) msg.name + 4, (char*) msg.value); 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("sys_prop: Unable to %s service ctl [%s] uid: %d pid:%d\n", 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project msg.name + 4, msg.value, cr.uid, cr.pid); 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (check_perms(msg.name, cr.uid)) { 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set((char*) msg.name, (char*) msg.value); 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("sys_prop: permission denied uid:%d name:%s\n", 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project cr.uid, msg.name); 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project default: 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid get_property_workspace(int *fd, int *sz) 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *fd = pa_workspace.fd; 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *sz = pa_workspace.size; 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void load_properties(char *data) 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *key, *value, *eol, *sol, *tmp; 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sol = data; 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((eol = strchr(sol, '\n'))) { 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project key = sol; 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *eol++ = 0; 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sol = eol; 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project value = strchr(key, '='); 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(value == 0) continue; 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *value++ = 0; 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(isspace(*key)) key++; 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(*key == '#') continue; 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tmp = value - 2; 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((tmp > key) && isspace(*tmp)) *tmp-- = 0; 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 417dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while(isspace(*value)) value++; 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project tmp = eol - 2; 419dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while((tmp > value) && isspace(*tmp)) *tmp-- = 0; 420dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 421dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(key, value); 422dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 423dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 425dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void load_properties_from_file(const char *fn) 426dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 427dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char *data; 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project unsigned sz; 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project data = read_file(fn, &sz); 431dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 432dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(data != 0) { 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project load_properties(data); 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project free(data); 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void load_persistent_properties() 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DIR* dir = opendir(PERSISTENT_PROPERTY_DIR); 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct dirent* entry; 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char path[PATH_MAX]; 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROP_VALUE_MAX]; 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd, length; 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (dir) { 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while ((entry = readdir(dir)) != NULL) { 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!strcmp(entry->d_name, ".") || !strcmp(entry->d_name, "..") || 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncmp("persist.", entry->d_name, sizeof("persist.") - 1)) 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 451dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#if HAVE_DIRENT_D_TYPE 452dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (entry->d_type != DT_REG) 453dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* open the file and read the property value */ 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(path, sizeof(path), "%s/%s", PERSISTENT_PROPERTY_DIR, entry->d_name); 457dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = open(path, O_RDONLY); 458dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fd >= 0) { 459dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project length = read(fd, value, sizeof(value) - 1); 460dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (length >= 0) { 461dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project value[length] = 0; 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(entry->d_name, value); 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 464dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Unable to read persistent property file %s errno: %d\n", path, errno); 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project close(fd); 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 468dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Unable to open persistent property file %s errno: %d\n", path, errno); 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 470dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project closedir(dir); 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 473dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ERROR("Unable to open persistent property directory %s errno: %d\n", PERSISTENT_PROPERTY_DIR, errno); 474dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project persistent_properties_loaded = 1; 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid property_init(void) 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_property_area(); 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project load_properties_from_file(PROP_PATH_RAMDISK_DEFAULT); 483dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 484dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 485dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint start_property_service(void) 486dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 487dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int fd; 488dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 489dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project load_properties_from_file(PROP_PATH_SYSTEM_BUILD); 490dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project load_properties_from_file(PROP_PATH_SYSTEM_DEFAULT); 491dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project load_properties_from_file(PROP_PATH_LOCAL_OVERRIDE); 492dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Read persistent properties after all default values have been loaded. */ 493dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project load_persistent_properties(); 494dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 495dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fd = create_socket(PROP_SERVICE_NAME, SOCK_STREAM, 0666, 0, 0); 496dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(fd < 0) return -1; 497dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFD, FD_CLOEXEC); 498dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fcntl(fd, F_SETFL, O_NONBLOCK); 499dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 500dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project listen(fd, 8); 501dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return fd; 502dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 503