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- /*
- * Copyright (C) 2007 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /* This file is used to define the properties of the filesystem
- ** images generated by build tools (mkbootfs and mkyaffs2image) and
- ** by the device side of adb.
- */
- #ifndef _ANDROID_FILESYSTEM_CONFIG_H_
- #define _ANDROID_FILESYSTEM_CONFIG_H_
- #include <string.h>
- #include <sys/stat.h>
- #include <sys/types.h>
- /* This is the master Users and Groups config for the platform.
- ** DO NOT EVER RENUMBER.
- */
- #define AID_ROOT 0 /* traditional unix root user */
- #define AID_SYSTEM 1000 /* system server */
- #define AID_RADIO 1001 /* telephony subsystem, RIL */
- #define AID_BLUETOOTH 1002 /* bluetooth subsystem */
- #define AID_GRAPHICS 1003 /* graphics devices */
- #define AID_INPUT 1004 /* input devices */
- #define AID_AUDIO 1005 /* audio devices */
- #define AID_CAMERA 1006 /* camera devices */
- #define AID_LOG 1007 /* log devices */
- #define AID_COMPASS 1008 /* compass device */
- #define AID_MOUNT 1009 /* mountd socket */
- #define AID_WIFI 1010 /* wifi subsystem */
- #define AID_ADB 1011 /* android debug bridge (adbd) */
- #define AID_INSTALL 1012 /* group for installing packages */
- #define AID_MEDIA 1013 /* mediaserver process */
- #define AID_DHCP 1014 /* dhcp client */
- #define AID_SDCARD_RW 1015 /* external storage write access */
- #define AID_VPN 1016 /* vpn system */
- #define AID_KEYSTORE 1017 /* keystore subsystem */
- #define AID_USB 1018 /* USB devices */
- #define AID_DRM 1019 /* DRM server */
- #define AID_MDNSR 1020 /* MulticastDNSResponder (service discovery) */
- #define AID_GPS 1021 /* GPS daemon */
- #define AID_UNUSED1 1022 /* deprecated, DO NOT USE */
- #define AID_MEDIA_RW 1023 /* internal media storage write access */
- #define AID_MTP 1024 /* MTP USB driver access */
- #define AID_UNUSED2 1025 /* deprecated, DO NOT USE */
- #define AID_DRMRPC 1026 /* group for drm rpc */
- #define AID_NFC 1027 /* nfc subsystem */
- #define AID_SDCARD_R 1028 /* external storage read access */
- #define AID_SHELL 2000 /* adb and debug shell user */
- #define AID_CACHE 2001 /* cache access */
- #define AID_DIAG 2002 /* access to diagnostic resources */
- /* The 3000 series are intended for use as supplemental group id's only.
- * They indicate special Android capabilities that the kernel is aware of. */
- #define AID_NET_BT_ADMIN 3001 /* bluetooth: create any socket */
- #define AID_NET_BT 3002 /* bluetooth: create sco, rfcomm or l2cap sockets */
- #define AID_INET 3003 /* can create AF_INET and AF_INET6 sockets */
- #define AID_NET_RAW 3004 /* can create raw INET sockets */
- #define AID_NET_ADMIN 3005 /* can configure interfaces and routing tables. */
- #define AID_NET_BW_STATS 3006 /* read bandwidth statistics */
- #define AID_NET_BW_ACCT 3007 /* change bandwidth statistics accounting */
- #define AID_NET_BT_STACK 3008 /* bluetooth: access config files */
- #define AID_MISC 9998 /* access to misc storage */
- #define AID_NOBODY 9999
- #define AID_APP 10000 /* first app user */
- #define AID_ISOLATED_START 99000 /* start of uids for fully isolated sandboxed processes */
- #define AID_ISOLATED_END 99999 /* end of uids for fully isolated sandboxed processes */
- #define AID_USER 100000 /* offset for uid ranges for each user */
- #define AID_SHARED_GID_START 50000 /* start of gids for apps in each user to share */
- #define AID_SHARED_GID_END 59999 /* start of gids for apps in each user to share */
- #if !defined(EXCLUDE_FS_CONFIG_STRUCTURES)
- struct android_id_info {
- const char *name;
- unsigned aid;
- };
- static const struct android_id_info android_ids[] = {
- { "root", AID_ROOT, },
- { "system", AID_SYSTEM, },
- { "radio", AID_RADIO, },
- { "bluetooth", AID_BLUETOOTH, },
- { "graphics", AID_GRAPHICS, },
- { "input", AID_INPUT, },
- { "audio", AID_AUDIO, },
- { "camera", AID_CAMERA, },
- { "log", AID_LOG, },
- { "compass", AID_COMPASS, },
- { "mount", AID_MOUNT, },
- { "wifi", AID_WIFI, },
- { "dhcp", AID_DHCP, },
- { "adb", AID_ADB, },
- { "install", AID_INSTALL, },
- { "media", AID_MEDIA, },
- { "drm", AID_DRM, },
- { "mdnsr", AID_MDNSR, },
- { "nfc", AID_NFC, },
- { "drmrpc", AID_DRMRPC, },
- { "shell", AID_SHELL, },
- { "cache", AID_CACHE, },
- { "diag", AID_DIAG, },
- { "net_bt_admin", AID_NET_BT_ADMIN, },
- { "net_bt", AID_NET_BT, },
- { "net_bt_stack", AID_NET_BT_STACK, },
- { "sdcard_r", AID_SDCARD_R, },
- { "sdcard_rw", AID_SDCARD_RW, },
- { "media_rw", AID_MEDIA_RW, },
- { "vpn", AID_VPN, },
- { "keystore", AID_KEYSTORE, },
- { "usb", AID_USB, },
- { "mtp", AID_MTP, },
- { "gps", AID_GPS, },
- { "inet", AID_INET, },
- { "net_raw", AID_NET_RAW, },
- { "net_admin", AID_NET_ADMIN, },
- { "net_bw_stats", AID_NET_BW_STATS, },
- { "net_bw_acct", AID_NET_BW_ACCT, },
- { "misc", AID_MISC, },
- { "nobody", AID_NOBODY, },
- };
- #define android_id_count \
- (sizeof(android_ids) / sizeof(android_ids[0]))
- struct fs_path_config {
- unsigned mode;
- unsigned uid;
- unsigned gid;
- const char *prefix;
- };
- /* Rules for directories.
- ** These rules are applied based on "first match", so they
- ** should start with the most specific path and work their
- ** way up to the root.
- */
- static struct fs_path_config android_dirs[] = {
- { 00770, AID_SYSTEM, AID_CACHE, "cache" },
- { 00771, AID_SYSTEM, AID_SYSTEM, "data/app" },
- { 00771, AID_SYSTEM, AID_SYSTEM, "data/app-private" },
- { 00771, AID_SYSTEM, AID_SYSTEM, "data/dalvik-cache" },
- { 00771, AID_SYSTEM, AID_SYSTEM, "data/data" },
- { 00771, AID_SHELL, AID_SHELL, "data/local/tmp" },
- { 00771, AID_SHELL, AID_SHELL, "data/local" },
- { 01771, AID_SYSTEM, AID_MISC, "data/misc" },
- { 00770, AID_DHCP, AID_DHCP, "data/misc/dhcp" },
- { 00775, AID_MEDIA_RW, AID_MEDIA_RW, "data/media" },
- { 00775, AID_MEDIA_RW, AID_MEDIA_RW, "data/media/Music" },
- { 00771, AID_SYSTEM, AID_SYSTEM, "data" },
- { 00750, AID_ROOT, AID_SHELL, "sbin" },
- { 00755, AID_ROOT, AID_SHELL, "system/bin" },
- { 00755, AID_ROOT, AID_SHELL, "system/vendor" },
- { 00755, AID_ROOT, AID_SHELL, "system/xbin" },
- { 00755, AID_ROOT, AID_ROOT, "system/etc/ppp" },
- { 00777, AID_ROOT, AID_ROOT, "sdcard" },
- { 00755, AID_ROOT, AID_ROOT, 0 },
- };
- /* Rules for files.
- ** These rules are applied based on "first match", so they
- ** should start with the most specific path and work their
- ** way up to the root. Prefixes ending in * denotes wildcard
- ** and will allow partial matches.
- */
- static struct fs_path_config android_files[] = {
- { 00440, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.rc" },
- { 00550, AID_ROOT, AID_SHELL, "system/etc/init.goldfish.sh" },
- { 00440, AID_ROOT, AID_SHELL, "system/etc/init.trout.rc" },
- { 00550, AID_ROOT, AID_SHELL, "system/etc/init.ril" },
- { 00550, AID_ROOT, AID_SHELL, "system/etc/init.testmenu" },
- { 00550, AID_DHCP, AID_SHELL, "system/etc/dhcpcd/dhcpcd-run-hooks" },
- { 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/dbus.conf" },
- { 00444, AID_RADIO, AID_AUDIO, "system/etc/AudioPara4.csv" },
- { 00555, AID_ROOT, AID_ROOT, "system/etc/ppp/*" },
- { 00555, AID_ROOT, AID_ROOT, "system/etc/rc.*" },
- { 00644, AID_SYSTEM, AID_SYSTEM, "data/app/*" },
- { 00644, AID_MEDIA_RW, AID_MEDIA_RW, "data/media/*" },
- { 00644, AID_SYSTEM, AID_SYSTEM, "data/app-private/*" },
- { 00644, AID_APP, AID_APP, "data/data/*" },
- /* the following two files are INTENTIONALLY set-gid and not set-uid.
- * Do not change. */
- { 02755, AID_ROOT, AID_NET_RAW, "system/bin/ping" },
- { 02750, AID_ROOT, AID_INET, "system/bin/netcfg" },
- /* the following five files are INTENTIONALLY set-uid, but they
- * are NOT included on user builds. */
- { 06755, AID_ROOT, AID_ROOT, "system/xbin/su" },
- { 06755, AID_ROOT, AID_ROOT, "system/xbin/librank" },
- { 06755, AID_ROOT, AID_ROOT, "system/xbin/procrank" },
- { 06755, AID_ROOT, AID_ROOT, "system/xbin/procmem" },
- { 06755, AID_ROOT, AID_ROOT, "system/xbin/tcpdump" },
- { 04770, AID_ROOT, AID_RADIO, "system/bin/pppd-ril" },
- /* the following file is INTENTIONALLY set-uid, and IS included
- * in user builds. */
- { 06750, AID_ROOT, AID_SHELL, "system/bin/run-as" },
- { 00755, AID_ROOT, AID_SHELL, "system/bin/*" },
- { 00755, AID_ROOT, AID_ROOT, "system/lib/valgrind/*" },
- { 00755, AID_ROOT, AID_SHELL, "system/xbin/*" },
- { 00755, AID_ROOT, AID_SHELL, "system/vendor/bin/*" },
- { 00750, AID_ROOT, AID_SHELL, "sbin/*" },
- { 00755, AID_ROOT, AID_ROOT, "bin/*" },
- { 00750, AID_ROOT, AID_SHELL, "init*" },
- { 00750, AID_ROOT, AID_SHELL, "charger*" },
- { 00750, AID_ROOT, AID_SHELL, "sbin/fs_mgr" },
- { 00640, AID_ROOT, AID_SHELL, "fstab.*" },
- { 00644, AID_ROOT, AID_ROOT, 0 },
- };
- static inline void fs_config(const char *path, int dir,
- unsigned *uid, unsigned *gid, unsigned *mode)
- {
- struct fs_path_config *pc;
- int plen;
- pc = dir ? android_dirs : android_files;
- plen = strlen(path);
- for(; pc->prefix; pc++){
- int len = strlen(pc->prefix);
- if (dir) {
- if(plen < len) continue;
- if(!strncmp(pc->prefix, path, len)) break;
- continue;
- }
- /* If name ends in * then allow partial matches. */
- if (pc->prefix[len -1] == '*') {
- if(!strncmp(pc->prefix, path, len - 1)) break;
- } else if (plen == len){
- if(!strncmp(pc->prefix, path, len)) break;
- }
- }
- *uid = pc->uid;
- *gid = pc->gid;
- *mode = (*mode & (~07777)) | pc->mode;
- #if 0
- fprintf(stderr,"< '%s' '%s' %d %d %o >\n",
- path, pc->prefix ? pc->prefix : "", *uid, *gid, *mode);
- #endif
- }
- #endif
- #endif
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