Linux
如何使用 ld-linux.so 執行程序?
動態連結器可以通過執行一些動態連結程序或共享對象來間接執行(在這種情況下,不能傳遞動態連結器的命令行選項,在 ELF 情況下,動態連結器儲存在 .interp程序的一部分被執行)或直接通過執行:
/lib/ld-linux.so.*$$ OPTIONS $$ $$ PROGRAM [ARGUMENTS $$]
https://jlk.fjfi.cvut.cz/arch/manpages/man/core/man-pages/ld.so.8.en
類似的資訊可以在Program Library HOWTO中找到。
但是當我嘗試時,
$ 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 ...
我究竟做錯了什麼?有沒有辦法
ld-linux.so
直接用來執行程序?
嘗試使用完整路徑
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