b2g script

01 #!/system/bin/sh
02 umask 0027
03 export TMPDIR=/data/local/tmp <===tmpフォルダ
04 mkdir -p $TMPDIR
05 chmod 1777 $TMPDIR
06
07 if [ ! -d /system/b2g ]; then
08
09   log -p W "No /system/b2g directory. Attempting recovery."
10   if [ -d /system/b2g.bak ]; then
11     if ! mount -w -o remount /system; then
12       log -p E "Failed to remount /system read-write"
13     fi
14     if ! mv /system/b2g.bak /system/b2g; then
15       log -p E "Failed to rename /system/b2g.bak to /system/b2g"
16     fi
17     mount -r -o remount /system
18     if [ -d /system/b2g ]; then
19       log "Recovery successful."
20     else
21       log -p E "Recovery failed."
22     fi
23   else
24     log -p E "Recovery failed: no /system/b2g.bak directory."
25   fi
26 fi
27
28 LD_PRELOAD="/system/b2g/libmozglue.so"
29 if [ -f "/system/b2g/libdmd.so" ]; then
30   echo "Running with DMD."
31   LD_PRELOAD="/system/b2g/libdmd.so $LD_PRELOAD"
32   export DMD="1"
33 fi
34 export LD_PRELOAD
35
36 export LD_LIBRARY_PATH=/vendor/lib:/system/lib:/system/b2g
37 export GRE_HOME=/system/b2g
38 exec /system/b2g/b2g

 logcat(Android Debug Monitor)へ出力する
 root@android:/ # log
 USAGE: log [-p priorityChar] [-t tag] message
	priorityChar should be one of:
		v,d,i,w,e

b2gはサービスなんだ。
init.b2g.rc 
service fakeperm /system/bin/fakeperm
    class main
    user root

service b2g /system/bin/b2g.sh
    class main
    onrestart restart media

service rilproxy /system/bin/rilproxy
    class main
    socket rilproxy stream 660 root system
    user root
    group radio

on boot
    exec /system/bin/rm -r /data/local/tmp

$ adb shell
root@android:/ # b2g-ps
APPLICATION      USER     PID   PPID  VSIZE  RSS     WCHAN    PC         NAME
b2g              root      115   1     237556 113740 ffffffff 400b6cb0 R /system/b2g/b2g
Usage            app_236   236   115   97084  38940 ffffffff 400ae140 S /system/b2g/plugin-container
Homescreen       app_250   250   115   109800 52572 ffffffff 40075140 S /system/b2g/plugin-container

root@android:/ # stop b2g

root@android:/ # b2g-ps
APPLICATION      USER     PID   PPID  VSIZE  RSS     WCHAN    PC         NAME

root@android:/ # start b2g

root@android:/ # b2g-ps                                                        
APPLICATION      USER     PID   PPID  VSIZE  RSS     WCHAN    PC         NAME
b2g              root      1036  1     241884 116180 ffffffff 40117140 S /system/b2g/b2g
Usage            app_1131  1131  1036  98108  38848 ffffffff 400cf140 S /system/b2g/plugin-container
Homescreen       app_1148  1148  1036  114392 59560 ffffffff 400c1c40 R /system/b2g/plugin-container

Customizing the b2g.sh script - Mozilla | MDN