baksmali反编译出现:UNEXPECTED TOP-LEVEL ERROR:....Too many open files

解包大型apk文件,可能会出现例如以下错误,

UNEXPECTED TOP-LEVEL ERROR:

java.util.concurrent.ExecutionException: java.io.FileNotFoundException/./Contacts/com/google/common/base/Optional$1.smali (Too many open files)

        at java.util.concurrent.FutureTask.report(FutureTask.java:122)

        at java.util.concurrent.FutureTask.get(FutureTask.java:188)

        at org.jf.smali.main.main(main.java:219)

Caused by: java.io.FileNotFoundException:/./Contacts/com/google/common/base/Optional$1.smali (Too many open files)

        at java.io.FileInputStream.open(Native Method)

        at java.io.FileInputStream.<init>(FileInputStream.java:146)

        at java.io.FileInputStream.<init>(FileInputStream.java:101)

        at org.jf.smali.main.assembleSmaliFile(main.java:268)

        at org.jf.smali.main.access$000(main.java:56)

        at org.jf.smali.main$1.call(main.java:210)

        at org.jf.smali.main$1.call(main.java:208)

        at java.util.concurrent.FutureTask.run(FutureTask.java:262)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

        at java.lang.Thread.run(Thread.java:745)

这是因为Linux文件数限制导致的错误.

能够使用Ulimit -a查看:

core file size          (blocks, -c) 0

data seg size           (kbytes, -d) unlimited

scheduling priority             (-e) 20

file size               (blocks, -f) unlimited

pending signals                 (-i) 16382

max locked memory       (kbytes, -l) 64

max memory size         (kbytes, -m) unlimited

open files                      (-n) 1024

pipe size            (512 bytes, -p) 8

POSIX message queues     (bytes, -q) 819200

real-time priority              (-r) 0

stack size              (kbytes, -s) 8192

cpu time               (seconds, -t) unlimited

max user processes              (-u) unlimited

virtual memory          (kbytes, -v) unlimited

file locks                      (-x) unlimited

解决办法就是提高这个上限数,切换到root账户,运行ulimit -n 4096

然后就在root以下运行baksmali就能够.

假设在root下没有java环境,仅仅要source一下java环境设置就能够了.比如我的环境设置文件为:

---------------setup.sh------------------------------

JAVA_HOME=/opt/jdk1.7.0_71

export JAVA_HOME

ANDROID_JAVA_HOME=/opt/jdk1.7.0_71

export ANDROID_JAVA_HOME

PATH=/opt/jdk1.7.0_71/binPATH

export PATH

仅仅须要source setup.sh就能够了,这是由于仅仅要离开root账户,或者重开terminal, ulimit的设置就无效了.