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Commit 17d80c84 authored by Pavlin Radoslavov's avatar Pavlin Radoslavov
Browse files

Use GID "wakelock" to control access to kernel wakelock 

* Added new kernel GID named "wakelock" (AID_WAKELOCK = 3010)
* Changed the group access for /sys/power/wake_lock and
  /sys/power/wake_unlock from "system" to "wakelock"
* Added "wakelock" to the list of groups for the healthd process/service

Bug: 25864142
Change-Id: Ieabee9964cccec3107971a361a43aa9805164aa9
parent 3fb7d976

include/private/android_filesystem_config.h

+2 −0
Original line number Diff line number Diff line
@@ -104,6 +104,7 @@ 
#define AID_NET_BW_ACCT   3007  /* change bandwidth statistics accounting */

#define AID_NET_BT_STACK  3008  /* bluetooth: access config files */

#define AID_READPROC      3009  /* Allow /proc read access */

#define AID_WAKELOCK      3010  /* Allow system wakelock read/write access */



/* The range 5000-5999 is also reserved for OEM, and must never be used here. */

#define AID_OEM_RESERVED_2_START 5000
@@ -197,6 +198,7 @@ static const struct android_id_info android_ids[] = { 
    { "net_bw_acct",   AID_NET_BW_ACCT, },

    { "net_bt_stack",  AID_NET_BT_STACK, },

    { "readproc",      AID_READPROC, },

    { "wakelock",      AID_WAKELOCK, },



    { "everybody",     AID_EVERYBODY, },

    { "misc",          AID_MISC, },

rootdir/init.rc

+3 −3
Original line number Diff line number Diff line
@@ -432,8 +432,8 @@ on boot 
    chown system system /sys/power/autosleep

    chown system system /sys/power/state

    chown system system /sys/power/wakeup_count

    chown radio system /sys/power/wake_lock

    chown radio system /sys/power/wake_unlock

    chown radio wakelock /sys/power/wake_lock

    chown radio wakelock /sys/power/wake_unlock

    chmod 0660 /sys/power/state

    chmod 0660 /sys/power/wake_lock

    chmod 0660 /sys/power/wake_unlock
@@ -562,7 +562,7 @@ service healthd /sbin/healthd 
    class core

    critical

    seclabel u:r:healthd:s0

    group root system

    group root system wakelock



service console /system/bin/sh

    class core