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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_DRMIO 1020 /* DRM IO server */
#define AID_GPS 1021 /* GPS daemon */
#define AID_UNUSED1 1022 /* deprecated, DO NOT USE */
#define AID_RFU1 1023 /* RFU */
#define AID_RFU2 1024 /* RFU */
#define AID_NFC 1025 /* nfc subsystem */
#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_MISC 9998 /* access to misc storage */
#define AID_NOBODY 9999
#define AID_APP 10000 /* first app user */
#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, },
{ "drmio", AID_DRMIO, },
{ "nfc", AID_NFC, },
{ "shell", AID_SHELL, },
{ "cache", AID_CACHE, },
{ "diag", AID_DIAG, },
{ "net_bt_admin", AID_NET_BT_ADMIN, },
{ "net_bt", AID_NET_BT, },
{ "sdcard_rw", AID_SDCARD_RW, },
{ "vpn", AID_VPN, },
{ "keystore", AID_KEYSTORE, },
{ "usb", AID_USB, },
{ "gps", AID_GPS, },
{ "inet", AID_INET, },
{ "net_raw", AID_NET_RAW, },
{ "net_admin", AID_NET_ADMIN, },
{ "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" },
{ 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" },
{ 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluetooth/main.conf" },
{ 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluetooth/input.conf" },
{ 00440, AID_BLUETOOTH, AID_BLUETOOTH, "system/etc/bluetooth/audio.conf" },
{ 00444, AID_NET_BT, AID_NET_BT, "system/etc/bluetooth/blacklist.conf" },
{ 00640, AID_SYSTEM, AID_SYSTEM, "system/etc/bluetooth/auto_pairing.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_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_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*" },
{ 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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