The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame^] | 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) |
| 69 | struct android_id_info { |
| 70 | const char *name; |
| 71 | unsigned aid; |
| 72 | }; |
| 73 | |
| 74 | static 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 | |
| 105 | struct 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 | |
| 118 | static 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 | */ |
| 143 | static 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 | |
| 179 | static 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 |