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 #define AID_SDCARD_RW 1015 /* external storage write access */ 52 #define AID_VPN 1016 /* vpn system */ 53 #define AID_KEYSTORE 1017 /* keystore subsystem */ 54 #define AID_USB 1018 /* USB devices */ 55 #define AID_DRM 1019 /* DRM server */ 56 #define AID_AVAILABLE 1020 /* available for use */ 57 #define AID_GPS 1021 /* GPS daemon */ 58 #define AID_UNUSED1 1022 /* deprecated, DO NOT USE */ 59 #define AID_MEDIA_RW 1023 /* internal media storage write access */ 60 #define AID_MTP 1024 /* MTP USB driver access */ 61 #define AID_NFC 1025 /* nfc subsystem */ 62 #define AID_DRMRPC 1026 /* group for drm rpc */ 63 64 #define AID_SHELL 2000 /* adb and debug shell user */ 65 #define AID_CACHE 2001 /* cache access */ 66 #define AID_DIAG 2002 /* access to diagnostic resources */ 67 68 /* The 3000 series are intended for use as supplemental group id's only. 69 * They indicate special Android capabilities that the kernel is aware of. */ 70 #define AID_NET_BT_ADMIN 3001 /* bluetooth: create any socket */ 71 #define AID_NET_BT 3002 /* bluetooth: create sco, rfcomm or l2cap sockets */ 72 #define AID_INET 3003 /* can create AF_INET and AF_INET6 sockets */ 73 #define AID_NET_RAW 3004 /* can create raw INET sockets */ 74 #define AID_NET_ADMIN 3005 /* can configure interfaces and routing tables. */ 75 #define AID_NET_BW_STATS 3006 /* read bandwidth statistics */ 76 #define AID_NET_BW_ACCT 3007 /* change bandwidth statistics accounting */ 77 78 #define AID_MISC 9998 /* access to misc storage */ 79 #define AID_NOBODY 9999 80 81 #define AID_APP 10000 /* first app user */ 82 83 #if !defined(EXCLUDE_FS_CONFIG_STRUCTURES) 84 struct android_id_info { 85 const char *name; 86 unsigned aid; 87 }; 88 89 static const struct android_id_info android_ids[] = { 90 { "root", AID_ROOT, }, 91 { "system", AID_SYSTEM, }, 92 { "radio", AID_RADIO, }, 93 { "bluetooth", AID_BLUETOOTH, }, 94 { "graphics", AID_GRAPHICS, }, 95 { "input", AID_INPUT, }, 96 { "audio", AID_AUDIO, }, 97 { "camera", AID_CAMERA, }, 98 { "log", AID_LOG, }, 99 { "compass", AID_COMPASS, }, 100 { "mount", AID_MOUNT, }, 101 { "wifi", AID_WIFI, }, 102 { "dhcp", AID_DHCP, }, 103 { "adb", AID_ADB, }, 104 { "install", AID_INSTALL, }, 105 { "media", AID_MEDIA, }, 106 { "drm", AID_DRM, }, 107 { "available", AID_AVAILABLE, }, 108 { "nfc", AID_NFC, }, 109 { "drmrpc", AID_DRMRPC, }, 110 { "shell", AID_SHELL, }, 111 { "cache", AID_CACHE, }, 112 { "diag", AID_DIAG, }, 113 { "net_bt_admin", AID_NET_BT_ADMIN, }, 114 { "net_bt", AID_NET_BT, }, 115 { "sdcard_rw", AID_SDCARD_RW, }, 116 { "media_rw", AID_MEDIA_RW, }, 117 { "vpn", AID_VPN, }, 118 { "keystore", AID_KEYSTORE, }, 119 { "usb", AID_USB, }, 120 { "mtp", AID_MTP, }, 121 { "gps", AID_GPS, }, 122 { "inet", AID_INET, }, 123 { "net_raw", AID_NET_RAW, }, 124 { "net_admin", AID_NET_ADMIN, }, 125 { "net_bw_stats", AID_NET_BW_STATS, }, 126 { "net_bw_acct", AID_NET_BW_ACCT, }, 127 { "misc", AID_MISC, }, 128 { "nobody", AID_NOBODY, }, 129 }; 130 131 #define android_id_count \ 132 (sizeof(android_ids) / sizeof(android_ids[0])) 133 134 struct fs_path_config { 135 unsigned mode; 136 unsigned uid; 137 unsigned gid; 138 const char *prefix; 139 }; 140 141 /* Rules for directories. 142 ** These rules are applied based on "first match", so they 143 ** should start with the most specific path and work their 144 ** way up to the root. 145 */ 146 147 static struct fs_path_config android_dirs[] = { 148 { 00770, AID_SYSTEM, AID_CACHE, "cache" }, 149 { 00771, AID_SYSTEM, AID_SYSTEM, "data/app" }, 150 { 00771, AID_SYSTEM, AID_SYSTEM, "data/app-private" }, 151 { 00771, AID_SYSTEM, AID_SYSTEM, "data/dalvik-cache" }, 152 { 00771, AID_SYSTEM, AID_SYSTEM, "data/data" }, 153 { 00771, AID_SHELL, AID_SHELL, "data/local/tmp" }, 154 { 00771, AID_SHELL, AID_SHELL, "data/local" }, 155 { 01771, AID_SYSTEM, AID_MISC, "data/misc" }, 156 { 00770, AID_DHCP, AID_DHCP, "data/misc/dhcp" }, 157 { 00775, AID_MEDIA_RW, AID_MEDIA_RW, "data/media" }, 158 { 00775, AID_MEDIA_RW, AID_MEDIA_RW, "data/media/Music" }, 159 { 00771, AID_SYSTEM, AID_SYSTEM, "data" }, 160 { 00750, AID_ROOT, AID_SHELL, "sbin" }, 161 { 00755, AID_ROOT, AID_SHELL, "system/bin" }, 162 { 00755, AID_ROOT, AID_SHELL, "system/vendor" }, 163 { 00755, AID_ROOT, AID_SHELL, "system/xbin" }, 164 { 00755, AID_ROOT, AID_ROOT, "system/etc/ppp" }, 165 { 00777, AID_ROOT, AID_ROOT, "sdcard" }, 166 { 00755, AID_ROOT, AID_ROOT, 0 }, 167 }; 168 169 /* Rules for files. 170 ** These rules are applied based on "first match", so they 171 ** should start with the most specific path and work their 172 ** way up to the root. Prefixes ending in * denotes wildcard 173 ** and will allow partial matches. 174 */ 175 static struct fs_path_config android_files[] = { 176 { 00440, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.rc" }, 177 { 00550, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.sh" }, 178 { 00440, AID_ROOT, AID_SHELL, "system/etc/init.trout.rc" }, 179 { 00550, AID_ROOT, AID_SHELL, "system/etc/init.ril" }, 180 { 00550, AID_ROOT, AID_SHELL, "system/etc/init.testmenu" }, 181 { 00550, AID_DHCP, AID_SHELL, "system/etc/dhcpcd/dhcpcd-run-hooks" }, 182 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/dbus.conf" }, 183 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluetooth/main.conf" }, 184 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluetooth/input.conf" }, 185 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluetooth/audio.conf" }, 186 { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluetooth/network.conf" }, 187 { 00444, AID_NET_BT, AID_NET_BT, "system/etc/bluetooth/blacklist.conf" }, 188 { 00640, AID_SYSTEM, AID_SYSTEM, "system/etc/bluetooth/auto_pairing.conf" }, 189 { 00444, AID_RADIO, AID_AUDIO, "system/etc/AudioPara4.csv" }, 190 { 00555, AID_ROOT, AID_ROOT, "system/etc/ppp/*" }, 191 { 00555, AID_ROOT, AID_ROOT, "system/etc/rc.*" }, 192 { 00644, AID_SYSTEM, AID_SYSTEM, "data/app/*" }, 193 { 00644, AID_MEDIA_RW, AID_MEDIA_RW, "data/media/*" }, 194 { 00644, AID_SYSTEM, AID_SYSTEM, "data/app-private/*" }, 195 { 00644, AID_APP, AID_APP, "data/data/*" }, 196 /* the following two files are INTENTIONALLY set-gid and not set-uid. 197 * Do not change. */ 198 { 02755, AID_ROOT, AID_NET_RAW, "system/bin/ping" }, 199 { 02750, AID_ROOT, AID_INET, "system/bin/netcfg" }, 200 /* the following five files are INTENTIONALLY set-uid, but they 201 * are NOT included on user builds. */ 202 { 06755, AID_ROOT, AID_ROOT, "system/xbin/su" }, 203 { 06755, AID_ROOT, AID_ROOT, "system/xbin/librank" }, 204 { 06755, AID_ROOT, AID_ROOT, "system/xbin/procrank" }, 205 { 06755, AID_ROOT, AID_ROOT, "system/xbin/procmem" }, 206 { 06755, AID_ROOT, AID_ROOT, "system/xbin/tcpdump" }, 207 { 04770, AID_ROOT, AID_RADIO, "system/bin/pppd-ril" }, 208 /* the following file is INTENTIONALLY set-uid, and IS included 209 * in user builds. */ 210 { 06750, AID_ROOT, AID_SHELL, "system/bin/run-as" }, 211 { 00755, AID_ROOT, AID_SHELL, "system/bin/*" }, 212 { 00755, AID_ROOT, AID_ROOT, "system/lib/valgrind/*" }, 213 { 00755, AID_ROOT, AID_SHELL, "system/xbin/*" }, 214 { 00755, AID_ROOT, AID_SHELL, "system/vendor/bin/*" }, 215 { 00750, AID_ROOT, AID_SHELL, "sbin/*" }, 216 { 00755, AID_ROOT, AID_ROOT, "bin/*" }, 217 { 00750, AID_ROOT, AID_SHELL, "init*" }, 218 { 00750, AID_ROOT, AID_SHELL, "charger*" }, 219 { 00644, AID_ROOT, AID_ROOT, 0 }, 220 }; 221 222 static inline void fs_config(const char *path, int dir, 223 unsigned *uid, unsigned *gid, unsigned *mode) 224 { 225 struct fs_path_config *pc; 226 int plen; 227 228 pc = dir ? android_dirs : android_files; 229 plen = strlen(path); 230 for(; pc->prefix; pc++){ 231 int len = strlen(pc->prefix); 232 if (dir) { 233 if(plen < len) continue; 234 if(!strncmp(pc->prefix, path, len)) break; 235 continue; 236 } 237 /* If name ends in * then allow partial matches. */ 238 if (pc->prefix[len -1] == '*') { 239 if(!strncmp(pc->prefix, path, len - 1)) break; 240 } else if (plen == len){ 241 if(!strncmp(pc->prefix, path, len)) break; 242 } 243 } 244 *uid = pc->uid; 245 *gid = pc->gid; 246 *mode = (*mode & (~07777)) | pc->mode; 247 248 #if 0 249 fprintf(stderr,"< '%s' '%s' %d %d %o >\n", 250 path, pc->prefix ? pc->prefix : "", *uid, *gid, *mode); 251 #endif 252 } 253 #endif 254 #endif 255
