android_filesystem_config.h revision 35237d135807af84bf9b0e5b8d7f8633e58db6f5
1/* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17/* This file is used to define the properties of the filesystem 18** images generated by build tools (mkbootfs and mkyaffs2image) and 19** by the device side of adb. 20*/ 21 22#ifndef _ANDROID_FILESYSTEM_CONFIG_H_ 23#define _ANDROID_FILESYSTEM_CONFIG_H_ 24 25#include <string.h> 26#include <sys/stat.h> 27#include <sys/types.h> 28 29/* This is the master Users and Groups config for the platform. 30** DO NOT EVER RENUMBER. 31*/ 32 33#define AID_ROOT 0 /* traditional unix root user */ 34 35#define AID_SYSTEM 1000 /* system server */ 36 37#define AID_RADIO 1001 /* telephony subsystem, RIL */ 38#define AID_BLUETOOTH 1002 /* bluetooth subsystem */ 39#define AID_GRAPHICS 1003 /* graphics devices */ 40#define AID_INPUT 1004 /* input devices */ 41#define AID_AUDIO 1005 /* audio devices */ 42#define AID_CAMERA 1006 /* camera devices */ 43#define AID_LOG 1007 /* log devices */ 44#define AID_COMPASS 1008 /* compass device */ 45#define AID_MOUNT 1009 /* mountd socket */ 46#define AID_WIFI 1010 /* wifi subsystem */ 47#define AID_ADB 1011 /* android debug bridge (adbd) */ 48#define AID_INSTALL 1012 /* group for installing packages */ 49#define AID_MEDIA 1013 /* mediaserver process */ 50#define AID_DHCP 1014 /* dhcp client */ 51 52#define AID_SHELL 2000 /* adb and debug shell user */ 53#define AID_CACHE 2001 /* cache access */ 54#define AID_DIAG 2002 /* access to diagnostic resources */ 55 56/* The 3000 series are intended for use as supplemental group id's only. 57 * They indicate special Android capabilities that the kernel is aware of. */ 58#define AID_NET_BT_ADMIN 3001 /* bluetooth: create any socket */ 59#define AID_NET_BT 3002 /* bluetooth: create sco, rfcomm or l2cap sockets */ 60#define AID_INET 3003 /* can create AF_INET and AF_INET6 sockets */ 61#define AID_NET_RAW 3004 /* can create raw INET sockets */ 62 63#define AID_MISC 9998 /* access to misc storage */ 64#define AID_NOBODY 9999 65 66#define AID_APP 10000 /* first app user */ 67 68#if !defined(EXCLUDE_FS_CONFIG_STRUCTURES) 69struct android_id_info { 70 const char *name; 71 unsigned aid; 72}; 73 74static struct android_id_info android_ids[] = { 75 { "root", AID_ROOT, }, 76 { "system", AID_SYSTEM, }, 77 { "radio", AID_RADIO, }, 78 { "bluetooth", AID_BLUETOOTH, }, 79 { "graphics", AID_GRAPHICS, }, 80 { "input", AID_INPUT, }, 81 { "audio", AID_AUDIO, }, 82 { "camera", AID_CAMERA, }, 83 { "log", AID_LOG, }, 84 { "compass", AID_COMPASS, }, 85 { "mount", AID_MOUNT, }, 86 { "wifi", AID_WIFI, }, 87 { "dhcp", AID_DHCP, }, 88 { "adb", AID_ADB, }, 89 { "install", AID_INSTALL, }, 90 { "media", AID_MEDIA, }, 91 { "shell", AID_SHELL, }, 92 { "cache", AID_CACHE, }, 93 { "diag", AID_DIAG, }, 94 { "net_bt_admin", AID_NET_BT_ADMIN, }, 95 { "net_bt", AID_NET_BT, }, 96 { "inet", AID_INET, }, 97 { "net_raw", AID_NET_RAW, }, 98 { "misc", AID_MISC, }, 99 { "nobody", AID_NOBODY, }, 100}; 101 102#define android_id_count \ 103 (sizeof(android_ids) / sizeof(android_ids[0])) 104 105struct fs_path_config { 106 unsigned mode; 107 unsigned uid; 108 unsigned gid; 109 const char *prefix; 110}; 111 112/* Rules for directories. 113** These rules are applied based on "first match", so they 114** should start with the most specific path and work their 115** way up to the root. 116*/ 117 118static struct fs_path_config android_dirs[] = { 119 { 00770, AID_SYSTEM, AID_CACHE, "cache" }, 120 { 00771, AID_SYSTEM, AID_SYSTEM, "data/app" }, 121 { 00771, AID_SYSTEM, AID_SYSTEM, "data/app-private" }, 122 { 00771, AID_SYSTEM, AID_SYSTEM, "data/dalvik-cache" }, 123 { 00771, AID_SYSTEM, AID_SYSTEM, "data/data" }, 124 { 00771, AID_SHELL, AID_SHELL, "data/local/tmp" }, 125 { 00771, AID_SHELL, AID_SHELL, "data/local" }, 126 { 01771, AID_SYSTEM, AID_MISC, "data/misc" }, 127 { 00770, AID_DHCP, AID_DHCP, "data/misc/dhcp" }, 128 { 00771, AID_SYSTEM, AID_SYSTEM, "data" }, 129 { 00750, AID_ROOT, AID_SHELL, "sbin" }, 130 { 00755, AID_ROOT, AID_SHELL, "system/bin" }, 131 { 00755, AID_ROOT, AID_SHELL, "system/xbin" }, 132 { 00777, AID_ROOT, AID_ROOT, "system/etc/ppp" }, /* REMOVE */ 133 { 00777, AID_ROOT, AID_ROOT, "sdcard" }, 134 { 00755, AID_ROOT, AID_ROOT, 0 }, 135}; 136 137/* Rules for files. 138** These rules are applied based on "first match", so they 139** should start with the most specific path and work their 140** way up to the root. Prefixes ending in * denotes wildcard 141** and will allow partial matches. 142*/ 143static struct fs_path_config android_files[] = { 144 { 00555, AID_ROOT, AID_ROOT, "system/etc/ppp/ip-up" }, 145 { 00555, AID_ROOT, AID_ROOT, "system/etc/ppp/ip-down" }, 146 { 00440, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.rc" }, 147 { 00550, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.sh" }, 148 { 00440, AID_ROOT, AID_SHELL, "system/etc/init.trout.rc" }, 149 { 00550, AID_ROOT, AID_SHELL, "system/etc/init.ril" }, 150 { 00550, AID_ROOT, AID_SHELL, "system/etc/init.testmenu" }, 151 { 00550, AID_ROOT, AID_SHELL, "system/etc/init.gprs-pppd" }, 152 { 00550, AID_DHCP, AID_SHELL, "system/etc/dhcpcd/dhcpcd-run-hooks" }, 153 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/dbus.conf" }, 154 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluez/hcid.conf" }, 155 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluez/input.conf" }, 156 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluez/audio.conf" }, 157 { 00440, AID_RADIO, AID_AUDIO, "/system/etc/AudioPara4.csv" }, 158 { 00644, AID_SYSTEM, AID_SYSTEM, "data/app/*" }, 159 { 00644, AID_SYSTEM, AID_SYSTEM, "data/app-private/*" }, 160 { 00644, AID_APP, AID_APP, "data/data/*" }, 161 /* the following two files are INTENTIONALLY set-gid and not set-uid. 162 * Do not change. */ 163 { 02755, AID_ROOT, AID_NET_RAW, "system/bin/ping" }, 164 { 02755, AID_ROOT, AID_INET, "system/bin/netcfg" }, 165 /* the following four files are INTENTIONALLY set-uid, but they 166 * are NOT included on user builds. */ 167 { 06755, AID_ROOT, AID_ROOT, "system/xbin/su" }, 168 { 06755, AID_ROOT, AID_ROOT, "system/xbin/librank" }, 169 { 06755, AID_ROOT, AID_ROOT, "system/xbin/procrank" }, 170 { 06755, AID_ROOT, AID_ROOT, "system/xbin/procmem" }, 171 { 00755, AID_ROOT, AID_SHELL, "system/bin/*" }, 172 { 00755, AID_ROOT, AID_SHELL, "system/xbin/*" }, 173 { 00750, AID_ROOT, AID_SHELL, "sbin/*" }, 174 { 00755, AID_ROOT, AID_ROOT, "bin/*" }, 175 { 00750, AID_ROOT, AID_SHELL, "init*" }, 176 { 00644, AID_ROOT, AID_ROOT, 0 }, 177}; 178 179static inline void fs_config(const char *path, int dir, 180 unsigned *uid, unsigned *gid, unsigned *mode) 181{ 182 struct fs_path_config *pc; 183 int plen; 184 185 pc = dir ? android_dirs : android_files; 186 plen = strlen(path); 187 for(; pc->prefix; pc++){ 188 int len = strlen(pc->prefix); 189 if (dir) { 190 if(plen < len) continue; 191 if(!strncmp(pc->prefix, path, len)) break; 192 continue; 193 } 194 /* If name ends in * then allow partial matches. */ 195 if (pc->prefix[len -1] == '*') { 196 if(!strncmp(pc->prefix, path, len - 1)) break; 197 } else if (plen == len){ 198 if(!strncmp(pc->prefix, path, len)) break; 199 } 200 } 201 *uid = pc->uid; 202 *gid = pc->gid; 203 *mode = (*mode & (~07777)) | pc->mode; 204 205#if 0 206 fprintf(stderr,"< '%s' '%s' %d %d %o >\n", 207 path, pc->prefix ? pc->prefix : "", *uid, *gid, *mode); 208#endif 209} 210#endif 211#endif 212