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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_MDNSR 1020 /* MulticastDNSResponder (service discovery) */ | |
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_UNUSED2 1025 /* deprecated, DO NOT USE */ | |
62 | #define AID_DRMRPC 1026 /* group for drm rpc */ | |
63 | #define AID_NFC 1027 /* nfc subsystem */ | |
64 | #define AID_SDCARD_R 1028 /* external storage read access */ | |
65 | ||
66 | #define AID_SHELL 2000 /* adb and debug shell user */ | |
67 | #define AID_CACHE 2001 /* cache access */ | |
68 | #define AID_DIAG 2002 /* access to diagnostic resources */ | |
69 | ||
70 | /* The 3000 series are intended for use as supplemental group id's only. | |
71 | * They indicate special Android capabilities that the kernel is aware of. */ | |
72 | #define AID_NET_BT_ADMIN 3001 /* bluetooth: create any socket */ | |
73 | #define AID_NET_BT 3002 /* bluetooth: create sco, rfcomm or l2cap sockets */ | |
74 | #define AID_INET 3003 /* can create AF_INET and AF_INET6 sockets */ | |
75 | #define AID_NET_RAW 3004 /* can create raw INET sockets */ | |
76 | #define AID_NET_ADMIN 3005 /* can configure interfaces and routing tables. */ | |
77 | #define AID_NET_BW_STATS 3006 /* read bandwidth statistics */ | |
78 | #define AID_NET_BW_ACCT 3007 /* change bandwidth statistics accounting */ | |
79 | #define AID_NET_BT_STACK 3008 /* bluetooth: access config files */ | |
80 | #define AID_QCOM_ONCRPC 3009 /* can read/write /dev/oncrpc files */ | |
81 | #define AID_QCOM_DIAG 3010 /* can read/write /dev/diag */ | |
82 | ||
83 | #if defined(MOTOROLA_UIDS) | |
84 | #define AID_MOT_OSH 5000 /* OSH */ | |
85 | #define AID_MOT_ACCY 9000 /* access to accessory */ | |
86 | #define AID_MOT_PWRIC 9001 /* power IC */ | |
87 | #define AID_MOT_USB 9002 /* mot usb */ | |
88 | #define AID_MOT_DRM 9003 /* can access DRM resource. */ | |
89 | #define AID_MOT_TCMD 9004 /* mot_tcmd */ | |
90 | #define AID_MOT_SEC_RTC 9005 /* mot cpcap rtc */ | |
91 | #define AID_MOT_TOMBSTONE 9006 | |
92 | #define AID_MOT_TPAPI 9007 /* mot_tpapi */ | |
93 | #define AID_MOT_SECCLKD 9008 /* mot_secclkd */ | |
94 | #define AID_MOT_WHISPER 9009 /* Whisper Protocol access */ | |
95 | #define AID_MOT_CAIF 9010 /* can create CAIF sockets */ | |
96 | #define AID_MOT_DLNA 9011 /* DLNA native */ | |
97 | #endif // MOTOROLA_UIDS | |
98 | ||
99 | #define AID_MISC 9998 /* access to misc storage */ | |
100 | #define AID_NOBODY 9999 | |
101 | ||
102 | #define AID_APP 10000 /* first app user */ | |
103 | ||
104 | #define AID_ISOLATED_START 99000 /* start of uids for fully isolated sandboxed processes */ | |
105 | #define AID_ISOLATED_END 99999 /* end of uids for fully isolated sandboxed processes */ | |
106 | ||
107 | #define AID_USER 100000 /* offset for uid ranges for each user */ | |
108 | ||
109 | #define AID_SHARED_GID_START 50000 /* start of gids for apps in each user to share */ | |
110 | #define AID_SHARED_GID_END 59999 /* start of gids for apps in each user to share */ | |
111 | ||
112 | #if !defined(EXCLUDE_FS_CONFIG_STRUCTURES) | |
113 | struct android_id_info { | |
114 | const char *name; | |
115 | unsigned aid; | |
116 | }; | |
117 | ||
118 | static const struct android_id_info android_ids[] = { | |
119 | { "root", AID_ROOT, }, | |
120 | { "system", AID_SYSTEM, }, | |
121 | { "radio", AID_RADIO, }, | |
122 | { "bluetooth", AID_BLUETOOTH, }, | |
123 | { "graphics", AID_GRAPHICS, }, | |
124 | { "input", AID_INPUT, }, | |
125 | { "audio", AID_AUDIO, }, | |
126 | { "camera", AID_CAMERA, }, | |
127 | { "log", AID_LOG, }, | |
128 | { "compass", AID_COMPASS, }, | |
129 | { "mount", AID_MOUNT, }, | |
130 | { "wifi", AID_WIFI, }, | |
131 | { "dhcp", AID_DHCP, }, | |
132 | { "adb", AID_ADB, }, | |
133 | { "install", AID_INSTALL, }, | |
134 | { "media", AID_MEDIA, }, | |
135 | { "drm", AID_DRM, }, | |
136 | { "mdnsr", AID_MDNSR, }, | |
137 | { "nfc", AID_NFC, }, | |
138 | { "drmrpc", AID_DRMRPC, }, | |
139 | { "shell", AID_SHELL, }, | |
140 | { "cache", AID_CACHE, }, | |
141 | { "diag", AID_DIAG, }, | |
142 | { "net_bt_admin", AID_NET_BT_ADMIN, }, | |
143 | { "net_bt", AID_NET_BT, }, | |
144 | { "net_bt_stack", AID_NET_BT_STACK, }, | |
145 | { "sdcard_r", AID_SDCARD_R, }, | |
146 | { "sdcard_rw", AID_SDCARD_RW, }, | |
147 | { "media_rw", AID_MEDIA_RW, }, | |
148 | { "vpn", AID_VPN, }, | |
149 | { "keystore", AID_KEYSTORE, }, | |
150 | { "usb", AID_USB, }, | |
151 | { "mtp", AID_MTP, }, | |
152 | { "gps", AID_GPS, }, | |
153 | { "inet", AID_INET, }, | |
154 | { "net_raw", AID_NET_RAW, }, | |
155 | { "net_admin", AID_NET_ADMIN, }, | |
156 | { "net_bw_stats", AID_NET_BW_STATS, }, | |
157 | { "net_bw_acct", AID_NET_BW_ACCT, }, | |
158 | { "qcom_oncrpc", AID_QCOM_ONCRPC, }, | |
159 | { "qcom_diag", AID_QCOM_DIAG, }, | |
160 | #if defined(MOTOROLA_UIDS) | |
161 | { "mot_osh", AID_MOT_OSH, }, | |
162 | { "mot_accy", AID_MOT_ACCY, }, | |
163 | { "mot_pwric", AID_MOT_PWRIC, }, | |
164 | { "mot_usb", AID_MOT_USB, }, | |
165 | { "mot_drm", AID_MOT_DRM, }, | |
166 | { "mot_tcmd", AID_MOT_TCMD, }, | |
167 | { "mot_sec_rtc", AID_MOT_SEC_RTC, }, | |
168 | { "mot_tombstone", AID_MOT_TOMBSTONE, }, | |
169 | { "mot_tpapi", AID_MOT_TPAPI, }, | |
170 | { "mot_secclkd", AID_MOT_SECCLKD, }, | |
171 | { "mot_whisper", AID_MOT_WHISPER, }, | |
172 | { "mot_caif", AID_MOT_CAIF, }, | |
173 | { "mot_dlna", AID_MOT_DLNA, }, | |
174 | #endif | |
175 | { "misc", AID_MISC, }, | |
176 | { "nobody", AID_NOBODY, }, | |
177 | }; | |
178 | ||
179 | #define android_id_count \ | |
180 | (sizeof(android_ids) / sizeof(android_ids[0])) | |
181 | ||
182 | struct fs_path_config { | |
183 | unsigned mode; | |
184 | unsigned uid; | |
185 | unsigned gid; | |
186 | const char *prefix; | |
187 | }; | |
188 | ||
189 | /* Rules for directories. | |
190 | ** These rules are applied based on "first match", so they | |
191 | ** should start with the most specific path and work their | |
192 | ** way up to the root. | |
193 | */ | |
194 | ||
195 | static struct fs_path_config android_dirs[] = { | |
196 | { 00770, AID_SYSTEM, AID_CACHE, "cache" }, | |
197 | { 00771, AID_SYSTEM, AID_SYSTEM, "data/app" }, | |
198 | { 00771, AID_SYSTEM, AID_SYSTEM, "data/app-private" }, | |
199 | { 00771, AID_SYSTEM, AID_SYSTEM, "data/dalvik-cache" }, | |
200 | { 00771, AID_SYSTEM, AID_SYSTEM, "data/data" }, | |
201 | { 00771, AID_SHELL, AID_SHELL, "data/local/tmp" }, | |
202 | { 00771, AID_SHELL, AID_SHELL, "data/local" }, | |
203 | { 01771, AID_SYSTEM, AID_MISC, "data/misc" }, | |
204 | { 00770, AID_DHCP, AID_DHCP, "data/misc/dhcp" }, | |
205 | { 00775, AID_MEDIA_RW, AID_MEDIA_RW, "data/media" }, | |
206 | { 00775, AID_MEDIA_RW, AID_MEDIA_RW, "data/media/Music" }, | |
207 | { 00771, AID_SYSTEM, AID_SYSTEM, "data" }, | |
208 | { 00750, AID_ROOT, AID_SHELL, "sbin" }, | |
209 | { 00755, AID_ROOT, AID_ROOT, "system/addon.d" }, | |
210 | { 00755, AID_ROOT, AID_SHELL, "system/bin" }, | |
211 | { 00755, AID_ROOT, AID_SHELL, "system/vendor" }, | |
212 | { 00755, AID_ROOT, AID_SHELL, "system/xbin" }, | |
213 | { 00755, AID_ROOT, AID_ROOT, "system/etc/ppp" }, | |
214 | { 00777, AID_ROOT, AID_ROOT, "sdcard" }, | |
215 | { 00755, AID_ROOT, AID_ROOT, 0 }, | |
216 | }; | |
217 | ||
218 | /* Rules for files. | |
219 | ** These rules are applied based on "first match", so they | |
220 | ** should start with the most specific path and work their | |
221 | ** way up to the root. Prefixes ending in * denotes wildcard | |
222 | ** and will allow partial matches. | |
223 | */ | |
224 | static struct fs_path_config android_files[] = { | |
225 | { 00440, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.rc" }, | |
226 | { 00550, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.sh" }, | |
227 | { 00440, AID_ROOT, AID_SHELL, "system/etc/init.trout.rc" }, | |
228 | { 00550, AID_ROOT, AID_SHELL, "system/etc/init.ril" }, | |
229 | { 00550, AID_ROOT, AID_SHELL, "system/etc/init.testmenu" }, | |
230 | { 00550, AID_DHCP, AID_SHELL, "system/etc/dhcpcd/dhcpcd-run-hooks" }, | |
231 | { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/dbus.conf" }, | |
232 | { 00444, AID_RADIO, AID_AUDIO, "system/etc/AudioPara4.csv" }, | |
233 | { 00555, AID_ROOT, AID_ROOT, "system/etc/ppp/*" }, | |
234 | { 00555, AID_ROOT, AID_ROOT, "system/etc/rc.*" }, | |
235 | { 00755, AID_ROOT, AID_ROOT, "system/addon.d/*" }, | |
236 | { 00644, AID_SYSTEM, AID_SYSTEM, "data/app/*" }, | |
237 | { 00644, AID_MEDIA_RW, AID_MEDIA_RW, "data/media/*" }, | |
238 | { 00644, AID_SYSTEM, AID_SYSTEM, "data/app-private/*" }, | |
239 | { 00644, AID_APP, AID_APP, "data/data/*" }, | |
240 | /* the following two files are INTENTIONALLY set-gid and not set-uid. | |
241 | * Do not change. */ | |
242 | { 02755, AID_ROOT, AID_NET_RAW, "system/bin/ping" }, | |
243 | { 02750, AID_ROOT, AID_INET, "system/bin/netcfg" }, | |
244 | /* the following five files are INTENTIONALLY set-uid, but they | |
245 | * are NOT included on user builds. */ | |
246 | { 06755, AID_ROOT, AID_ROOT, "system/xbin/su" }, | |
247 | { 06755, AID_ROOT, AID_ROOT, "system/xbin/librank" }, | |
248 | { 06755, AID_ROOT, AID_ROOT, "system/xbin/procrank" }, | |
249 | { 06755, AID_ROOT, AID_ROOT, "system/xbin/procmem" }, | |
250 | { 06755, AID_ROOT, AID_ROOT, "system/xbin/tcpdump" }, | |
251 | { 04770, AID_ROOT, AID_RADIO, "system/bin/pppd-ril" }, | |
252 | /* the following file is INTENTIONALLY set-uid, and IS included | |
253 | * in user builds. */ | |
254 | { 06750, AID_ROOT, AID_SHELL, "system/bin/run-as" }, | |
255 | { 06750, AID_ROOT, AID_SYSTEM, "system/bin/rebootcmd" }, | |
256 | { 00755, AID_ROOT, AID_SHELL, "system/bin/*" }, | |
257 | { 00755, AID_ROOT, AID_ROOT, "system/lib/valgrind/*" }, | |
258 | { 00755, AID_ROOT, AID_SHELL, "system/xbin/*" }, | |
259 | { 00755, AID_ROOT, AID_SHELL, "system/vendor/bin/*" }, | |
260 | { 00750, AID_ROOT, AID_SHELL, "sbin/*" }, | |
261 | { 00755, AID_ROOT, AID_ROOT, "bin/*" }, | |
262 | { 00750, AID_ROOT, AID_SHELL, "init*" }, | |
263 | { 00750, AID_ROOT, AID_SHELL, "charger*" }, | |
264 | { 00750, AID_ROOT, AID_SHELL, "sbin/fs_mgr" }, | |
265 | { 00640, AID_ROOT, AID_SHELL, "fstab.*" }, | |
266 | { 00755, AID_ROOT, AID_SHELL, "system/etc/init.d/*" }, | |
267 | { 00644, AID_ROOT, AID_ROOT, 0 }, | |
268 | }; | |
269 | ||
270 | static inline void fs_config(const char *path, int dir, | |
271 | unsigned *uid, unsigned *gid, unsigned *mode) | |
272 | { | |
273 | struct fs_path_config *pc; | |
274 | int plen; | |
275 | ||
276 | pc = dir ? android_dirs : android_files; | |
277 | plen = strlen(path); | |
278 | for(; pc->prefix; pc++){ | |
279 | int len = strlen(pc->prefix); | |
280 | if (dir) { | |
281 | if(plen < len) continue; | |
282 | if(!strncmp(pc->prefix, path, len)) break; | |
283 | continue; | |
284 | } | |
285 | /* If name ends in * then allow partial matches. */ | |
286 | if (pc->prefix[len -1] == '*') { | |
287 | if(!strncmp(pc->prefix, path, len - 1)) break; | |
288 | } else if (plen == len){ | |
289 | if(!strncmp(pc->prefix, path, len)) break; | |
290 | } | |
291 | } | |
292 | *uid = pc->uid; | |
293 | *gid = pc->gid; | |
294 | *mode = (*mode & (~07777)) | pc->mode; | |
295 | ||
296 | #if 0 | |
297 | fprintf(stderr,"< '%s' '%s' %d %d %o >\n", | |
298 | path, pc->prefix ? pc->prefix : "", *uid, *gid, *mode); | |
299 | #endif | |
300 | } | |
301 | #endif | |
302 | #endif |