error: only position independent executables (PIE) are supported

来源:互联网 发布:郑州施工队 网络布线 编辑:程序博客网 时间:2024/06/05 00:11


    PIE, position independent executables.

    android 4.1上开始支持PIE,所以4.1之前的版本不能使用PIE的executable,而之前开发的app一般都是非PIE的。

    Android 4.1        PIE (Position Independent Executable) support        Read-only relocations / immediate binding (-Wl,-z,relro -Wl,-z,now)        dmesg_restrict enabled (avoid leaking kernel addresses)        kptr_restrict enabled (avoid leaking kernel addresses)

    在android L后,linker.cpp中,

    //bionic\linker\linker.cppstatic ElfW(Addr) __linker_init_post_relocation(KernelArgumentBlock& args, ElfW(Addr) linker_base) {  ElfW(Ehdr)* elf_hdr = reinterpret_cast<ElfW(Ehdr)*>(si->base);  //不是PIE的直接报错返回,而之前的版本中都没有  if (elf_hdr->e_type != ET_DYN) {    __libc_format_fd(2, "error: only position independent executables (PIE) are supported.\n");    exit(EXIT_FAILURE);  }}

    所以在android L后,非PIE的exe执行都会报错error: only position independent executables (PIE) are supported.

    1.但是如果在android 4.1之前的版本运行PIE, 也是有办法的:
    The Chromium project released a wrapper that allows PIE binaries to run on pre-JB Android releases。

    具体的使用方法见http://stackoverflow.com/questions/24818902/running-a-native-library-on-android-l-error-only-position-independent-executab,

    其中run_pie在android L中的external\chromium_org\tools\android\run_pie中可找到,下面是run_pie.c中的注释,说明run_pie主要是为了在linker不支持PIE的早期版本中运行PIE。

    // This is a wrapper to run position independent executables on Android ICS,// where the linker doesn't support PIE. This requires the PIE binaries to be// built with CFLAGS +=-fvisibility=default -fPIE, and LDFLAGS += -rdynamic -pie// such that the main() symbol remains exported and can be dlsym-ed.

    2.那么在android L之后的版本运行非PIE,有没有办法?
    目前是没有解决方案,除非你把bionic的linker替换,具体参考下面的文章,使用其中修改编译过的linker, http://forum.xda-developers.com/google-nexus-5/development/fix-bypassing-pie-security-check-t2797731

    0 0
    原创粉丝点击