Início / unix / Perguntas / 467999
Accepted
x-yuri
Asked: 2018-09-11 02:58:35 +0800 CST

Como executar programas com ld-linux.so?

  • 772

O vinculador dinâmico pode ser executado indiretamente executando algum programa vinculado dinamicamente ou objeto compartilhado (nesse caso, nenhuma opção de linha de comando para o vinculador dinâmico pode ser passada e, no caso ELF, o vinculador dinâmico que é armazenado no arquivo .interp seção do programa é executada) ou diretamente executando:

/lib/ld-linux.so.* [OPÇÕES] [PROGRAMA [ARGUMENTOS]]

https://jlk.fjfi.cvut.cz/arch/manpages/man/core/man-pages/ld.so.8.en

Informações semelhantes podem ser encontradas em Program Library HOWTO .

Mas quando eu tento,

$ LD_DEBUG=libs /usr/lib/ld-linux.so.2 ls
     23325: find library=ls [0]; searching
     23325:  search cache=/etc/ld.so.cache
     23325: 
ls: error while loading shared libraries: ls: cannot open shared object file

$ LD_DEBUG=libs ls
     23503: find library=libcap.so.2 [0]; searching
     23503:  search cache=/etc/ld.so.cache
     23503:   trying file=/usr/lib/libcap.so.2
...

O que estou fazendo errado? Existe uma maneira de usar ld-linux.sodiretamente para executar um programa?

linux libraries

1 respostas

  1. Best Answer

    Tente usar o caminho completo para ls: 

    [ctor@dom0 tst]$ /lib64/ld-linux-x86-64.so.2 /usr/bin/ls
afile

[ctor@dom0 tst]$ /lib64/ld-linux-x86-64.so.2 ls
ls: error while loading shared libraries: ls: cannot open shared object file

[ctor@dom0 tst]$ /lib64/ld-linux-x86-64.so.2 anyinexistentcommandhere
anyinexistentcommandhere: error while loading shared libraries: anyinexistentcommandhere: cannot open shared object file

[ctor@dom0 tst]$ ldd ls
ldd: ./ls: No such file or directory

[ctor@dom0 tst]$ ldd `type -P ls`
    linux-vdso.so.1 (0x00007fffd636c000)
    libselinux.so.1 => /lib64/libselinux.so.1 (0x000074b858cc3000)
    libcap.so.2 => /lib64/libcap.so.2 (0x000074b858abe000)
    libc.so.6 => /lib64/libc.so.6 (0x000074b8586f8000)
    libpcre.so.1 => /lib64/libpcre.so.1 (0x000074b858486000)
    libdl.so.2 => /lib64/libdl.so.2 (0x000074b858282000)
    /lib64/ld-linux-x86-64.so.2 (0x000074b85910a000)
    libpthread.so.0 => /lib64/libpthread.so.0 (0x000074b858064000)

[ctor@dom0 tst]$ LD_DEBUG=libs /lib64/ld-linux-x86-64.so.2 ls
      6380: find library=ls [0]; searching
      6380:  search cache=/etc/ld.so.cache
      6380: 
ls: error while loading shared libraries: ls: cannot open shared object file

[ctor@dom0 tst]$ LD_DEBUG=libs /lib64/ld-linux-x86-64.so.2 inexistentcommand
      6415: find library=inexistentcommand [0]; searching
      6415:  search cache=/etc/ld.so.cache
      6415: 
inexistentcommand: error while loading shared libraries: inexistentcommand: cannot open shared object file

[ctor@dom0 tst]$ LD_DEBUG=libs /lib64/ld-linux-x86-64.so.2 /usr/bin/ls
      6342: find library=libselinux.so.1 [0]; searching
      6342:  search cache=/etc/ld.so.cache
      6342:   trying file=/lib64/libselinux.so.1
      6342: 
      6342: find library=libcap.so.2 [0]; searching
      6342:  search cache=/etc/ld.so.cache
      6342:   trying file=/lib64/libcap.so.2
      6342: 
      6342: find library=libc.so.6 [0]; searching
      6342:  search cache=/etc/ld.so.cache
      6342:   trying file=/lib64/libc.so.6
      6342: 
      6342: find library=libpcre.so.1 [0]; searching
      6342:  search cache=/etc/ld.so.cache
      6342:   trying file=/lib64/libpcre.so.1
      6342: 
      6342: find library=libdl.so.2 [0]; searching
      6342:  search cache=/etc/ld.so.cache
      6342:   trying file=/lib64/libdl.so.2
      6342: 
      6342: find library=libpthread.so.0 [0]; searching
      6342:  search cache=/etc/ld.so.cache
      6342:   trying file=/lib64/libpthread.so.0
      6342: 
      6342: 
      6342: calling init: /lib64/libpthread.so.0
      6342: 
      6342: 
      6342: calling init: /lib64/libc.so.6
      6342: 
      6342: 
      6342: calling init: /lib64/libdl.so.2
      6342: 
      6342: 
      6342: calling init: /lib64/libpcre.so.1
      6342: 
      6342: 
      6342: calling init: /lib64/libcap.so.2
      6342: 
      6342: 
      6342: calling init: /lib64/libselinux.so.1
      6342: 
      6342: 
      6342: initialize program: /usr/bin/ls
      6342: 
      6342: 
      6342: transferring control: /usr/bin/ls
      6342: 
afile
    • 7

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