您可以覆盖-XX + HeapDumpOnOutOfMemoryError生成的堆转储的文件权限吗? [英] Can you override the file permissions for the heap dump produced by -XX+HeapDumpOnOutOfMemoryError?

问题描述

在Linux上，当使用-XX+HeapDumpOnOutOfMemoryError时，所产生的hprof文件由运行Java进程的用户所拥有，并具有600的权限.

On Linux when using -XX+HeapDumpOnOutOfMemoryError the hprof file produced is owned by the user under which the java process is running and has permissions of 600.

我知道这些权限是最好的安全措施，但是可以覆盖它们吗?

I understand that these permissions are best security wise but is it possible to override them?

推荐答案

您可以使用以下方式启动JVM

You can start the JVM with

java -XX:+HeapDumpOnOutOfMemoryError -XX:OnOutOfMemoryError="chmod g+r java_pid*.hprof" {mainclass} {args}

该命令在创建堆转储后运行.例如，这将允许组读取访问当前目录中的所有堆转储文件.

The command runs after the heap dump is created. This will allow group read access to all heap dump files in the current directory for example.

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