| /* |
| * 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> |
| #include <stdint.h> |
| |
| #ifdef HAVE_ANDROID_OS |
| #include <linux/capability.h> |
| #else |
| #include "android_filesystem_capability.h" |
| #endif |
| |
| /* 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_CLAT 1029 /* clat part of nat464 */ |
| #define AID_LOOP_RADIO 1030 /* loop radio devices */ |
| #define AID_MEDIA_DRM 1031 /* MediaDrm plugins */ |
| #define AID_PACKAGE_INFO 1032 /* access to installed package details */ |
| #define AID_SDCARD_PICS 1033 /* external storage photos access */ |
| #define AID_SDCARD_AV 1034 /* external storage audio/video access */ |
| #define AID_SDCARD_ALL 1035 /* access all users external storage */ |
| #define AID_LOGD 1036 /* log daemon */ |
| |
| #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, }, |
| { "adb", AID_ADB, }, |
| { "install", AID_INSTALL, }, |
| { "media", AID_MEDIA, }, |
| { "dhcp", AID_DHCP, }, |
| { "sdcard_rw", AID_SDCARD_RW, }, |
| { "vpn", AID_VPN, }, |
| { "keystore", AID_KEYSTORE, }, |
| { "usb", AID_USB, }, |
| { "drm", AID_DRM, }, |
| { "mdnsr", AID_MDNSR, }, |
| { "gps", AID_GPS, }, |
| // AID_UNUSED1 |
| { "media_rw", AID_MEDIA_RW, }, |
| { "mtp", AID_MTP, }, |
| // AID_UNUSED2 |
| { "drmrpc", AID_DRMRPC, }, |
| { "nfc", AID_NFC, }, |
| { "sdcard_r", AID_SDCARD_R, }, |
| { "clat", AID_CLAT, }, |
| { "loop_radio", AID_LOOP_RADIO, }, |
| { "mediadrm", AID_MEDIA_DRM, }, |
| { "package_info", AID_PACKAGE_INFO, }, |
| { "sdcard_pics", AID_SDCARD_PICS, }, |
| { "sdcard_av", AID_SDCARD_AV, }, |
| { "sdcard_all", AID_SDCARD_ALL, }, |
| { "logd", AID_LOGD, }, |
| |
| { "shell", AID_SHELL, }, |
| { "cache", AID_CACHE, }, |
| { "diag", AID_DIAG, }, |
| |
| { "net_bt_admin", AID_NET_BT_ADMIN, }, |
| { "net_bt", AID_NET_BT, }, |
| { "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, }, |
| { "net_bt_stack", AID_NET_BT_STACK, }, |
| |
| { "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; |
| uint64_t capabilities; |
| 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 const struct fs_path_config android_dirs[] = { |
| { 00770, AID_SYSTEM, AID_CACHE, 0, "cache" }, |
| { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app" }, |
| { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/app-private" }, |
| { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/dalvik-cache" }, |
| { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data/data" }, |
| { 00771, AID_SHELL, AID_SHELL, 0, "data/local/tmp" }, |
| { 00771, AID_SHELL, AID_SHELL, 0, "data/local" }, |
| { 01771, AID_SYSTEM, AID_MISC, 0, "data/misc" }, |
| { 00770, AID_DHCP, AID_DHCP, 0, "data/misc/dhcp" }, |
| { 00775, AID_MEDIA_RW, AID_MEDIA_RW, 0, "data/media" }, |
| { 00775, AID_MEDIA_RW, AID_MEDIA_RW, 0, "data/media/Music" }, |
| { 00771, AID_SYSTEM, AID_SYSTEM, 0, "data" }, |
| { 00750, AID_ROOT, AID_SHELL, 0, "sbin" }, |
| { 00755, AID_ROOT, AID_SHELL, 0, "system/bin" }, |
| { 00755, AID_ROOT, AID_SHELL, 0, "system/vendor" }, |
| { 00755, AID_ROOT, AID_SHELL, 0, "system/xbin" }, |
| { 00755, AID_ROOT, AID_ROOT, 0, "system/etc/ppp" }, |
| { 00755, AID_ROOT, AID_SHELL, 0, "vendor" }, |
| { 00777, AID_ROOT, AID_ROOT, 0, "sdcard" }, |
| { 00755, AID_ROOT, AID_ROOT, 0, 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 const struct fs_path_config android_files[] = { |
| { 00440, AID_ROOT, AID_SHELL, 0, "system/etc/init.goldfish.rc" }, |
| { 00550, AID_ROOT, AID_SHELL, 0, "system/etc/init.goldfish.sh" }, |
| { 00440, AID_ROOT, AID_SHELL, 0, "system/etc/init.trout.rc" }, |
| { 00550, AID_ROOT, AID_SHELL, 0, "system/etc/init.ril" }, |
| { 00550, AID_ROOT, AID_SHELL, 0, "system/etc/init.testmenu" }, |
| { 00550, AID_DHCP, AID_SHELL, 0, "system/etc/dhcpcd/dhcpcd-run-hooks" }, |
| { 00444, AID_RADIO, AID_AUDIO, 0, "system/etc/AudioPara4.csv" }, |
| { 00555, AID_ROOT, AID_ROOT, 0, "system/etc/ppp/*" }, |
| { 00555, AID_ROOT, AID_ROOT, 0, "system/etc/rc.*" }, |
| { 00644, AID_SYSTEM, AID_SYSTEM, 0, "data/app/*" }, |
| { 00644, AID_MEDIA_RW, AID_MEDIA_RW, 0, "data/media/*" }, |
| { 00644, AID_SYSTEM, AID_SYSTEM, 0, "data/app-private/*" }, |
| { 00644, AID_APP, AID_APP, 0, "data/data/*" }, |
| { 00755, AID_ROOT, AID_ROOT, 0, "system/bin/ping" }, |
| |
| /* the following file is INTENTIONALLY set-gid and not set-uid. |
| * Do not change. */ |
| { 02750, AID_ROOT, AID_INET, 0, "system/bin/netcfg" }, |
| |
| /* the following five files are INTENTIONALLY set-uid, but they |
| * are NOT included on user builds. */ |
| { 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/su" }, |
| { 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/librank" }, |
| { 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/procrank" }, |
| { 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/procmem" }, |
| { 06755, AID_ROOT, AID_ROOT, 0, "system/xbin/tcpdump" }, |
| { 04770, AID_ROOT, AID_RADIO, 0, "system/bin/pppd-ril" }, |
| |
| /* the following files have enhanced capabilities and ARE included in user builds. */ |
| { 00750, AID_ROOT, AID_SHELL, (1 << CAP_SETUID) | (1 << CAP_SETGID), "system/bin/run-as" }, |
| |
| { 00755, AID_ROOT, AID_SHELL, 0, "system/bin/*" }, |
| { 00755, AID_ROOT, AID_ROOT, 0, "system/lib/valgrind/*" }, |
| { 00755, AID_ROOT, AID_SHELL, 0, "system/xbin/*" }, |
| { 00755, AID_ROOT, AID_SHELL, 0, "system/vendor/bin/*" }, |
| { 00755, AID_ROOT, AID_SHELL, 0, "vendor/bin/*" }, |
| { 00750, AID_ROOT, AID_SHELL, 0, "sbin/*" }, |
| { 00755, AID_ROOT, AID_ROOT, 0, "bin/*" }, |
| { 00750, AID_ROOT, AID_SHELL, 0, "init*" }, |
| { 00750, AID_ROOT, AID_SHELL, 0, "charger*" }, |
| { 00750, AID_ROOT, AID_SHELL, 0, "sbin/fs_mgr" }, |
| { 00640, AID_ROOT, AID_SHELL, 0, "fstab.*" }, |
| { 00644, AID_ROOT, AID_ROOT, 0, 0 }, |
| }; |
| |
| static inline void fs_config(const char *path, int dir, |
| unsigned *uid, unsigned *gid, unsigned *mode, uint64_t *capabilities) |
| { |
| const struct fs_path_config *pc; |
| int plen; |
| |
| if (path[0] == '/') { |
| path++; |
| } |
| |
| 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; |
| *capabilities = pc->capabilities; |
| |
| #if 0 |
| fprintf(stderr,"< '%s' '%s' %d %d %o >\n", |
| path, pc->prefix ? pc->prefix : "", *uid, *gid, *mode); |
| #endif |
| } |
| #endif |
| #endif |
