include/private/android_filesystem_config.h - android-core - Git at Google

 /*
  * 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_SHARED_RELRO  1037  /* creator of shared GNU RELRO files */

 #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_EVERYBODY     9997  /* shared between all apps in the same profile */
 #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, },
     { "shared_relro",  AID_SHARED_RELRO, },

     { "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, },

     { "everybody",     AID_EVERYBODY, },
     { "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_ROOT,   AID_ROOT,   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" },
     { 00771, AID_SHARED_RELRO, AID_SHARED_RELRO, 0, "data/misc/shared_relro" },
     { 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. */
     { 04750, AID_ROOT,      AID_SHELL,     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" },
     { 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" },

     { 00750, AID_ROOT,      AID_ROOT,      0, "system/bin/uncrypt" },
     { 00750, AID_ROOT,      AID_ROOT,      0, "system/bin/install-recovery.sh" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/bin/*" },
     { 00755, AID_ROOT,      AID_ROOT,      0, "system/lib/valgrind/*" },
     { 00755, AID_ROOT,      AID_ROOT,      0, "system/lib64/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, "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
	/*
	* 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_SHARED_RELRO 1037 /* creator of shared GNU RELRO files */

	#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_EVERYBODY 9997 /* shared between all apps in the same profile */
	#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, },
	{ "shared_relro", AID_SHARED_RELRO, },

	{ "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, },

	{ "everybody", AID_EVERYBODY, },
	{ "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_ROOT, AID_ROOT, 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" },
	{ 00771, AID_SHARED_RELRO, AID_SHARED_RELRO, 0, "data/misc/shared_relro" },
	{ 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. */
	{ 04750, AID_ROOT, AID_SHELL, 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" },
	{ 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" },

	{ 00750, AID_ROOT, AID_ROOT, 0, "system/bin/uncrypt" },
	{ 00750, AID_ROOT, AID_ROOT, 0, "system/bin/install-recovery.sh" },
	{ 00755, AID_ROOT, AID_SHELL, 0, "system/bin/*" },
	{ 00755, AID_ROOT, AID_ROOT, 0, "system/lib/valgrind/*" },
	{ 00755, AID_ROOT, AID_ROOT, 0, "system/lib64/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, "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