android uid 的定义

 #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  /*  system */
 #define AID_KEYSTORE      1017  /* keystore subsystem */
 #define AID_USB           1018  /* USB devices */
 #define AID_DRM           1019  /* DRM server */
 #define AID_AVAILABLE     1020  /* available for use */
 #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_NFC           1025  /* nfc subsystem */
 #define AID_DRMRPC        1026  /* group for drm rpc */

 #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_MISC          9998  /* access to misc storage */
 #define AID_NOBODY        9999

 #define AID_APP          10000 /* first app user */