这是一个gentoo服务器.有一个程序prog无法执行. (是的,设置了执行权限)
关于文件
$ls prog $./prog bash: ./prog: No such file or directory $file prog prog: ELF 32-bit LSB executable,Intel 80386,version 1 (SYSV),for GNU/Linux 2.2.5,dynamically linked (uses shared libs),not stripped $pwd /usr/local/bin $/usr/local/bin/prog bash: /usr/local/bin/prog: No such file or directory $less prog | head ELF Header: Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement,little endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: Intel 80386 Version: 0x1
我觉得它更少,为了表明它是一个实际的可执行文件,这里有更多的数据：
$xxd prog |head 0000000: 7f45 4c46 0101 0100 0000 0000 0000 0000 .ELF............ 0000010: 0200 0300 0100 0000 c092 0408 3400 0000 ............4... 0000020: 0401 0a00 0000 0000 3400 2000 0700 2800 ........4. ...(. 0000030: 2600 2300 0600 0000 3400 0000 3480 0408 &.#.....4...4... 0000040: 3480 0408 e000 0000 e000 0000 0500 0000 4............... 0000050: 0400 0000 0300 0000 1401 0000 1481 0408 ................ 0000060: 1481 0408 1300 0000 1300 0000 0400 0000 ................ 0000070: 0100 0000 0100 0000 0000 0000 0080 0408 ................ 0000080: 0080 0408 21f1 0500 21f1 0500 0500 0000 ....!...!....... 0000090: 0010 0000 0100 0000 40f1 0500 4081 0a08 ........@...@...
和
$ls -l prog
-rwxrwxr-x 1 1000 devs 725706 Aug 6 2007 prog
$ldd prog
not a dynamic executable
$strace ./prog
1249403877.639076 execve("./prog",["./prog"],[/* 27 vars */]) = -1 ENOENT (No such file or directory)
1249403877.640645 dup(2) = 3
1249403877.640875 fcntl(3,F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
1249403877.641143 fstat(3,{st_mode=S_IFCHR|0620,st_rdev=makedev(136,0),...}) = 0
1249403877.641484 mmap(NULL,4096,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 0x2b3b8954a000
1249403877.641747 lseek(3,SEEK_CUR) = -1 ESPIPE (Illegal seek)
1249403877.642045 write(3,"strace: exec: No such file or dir"...,40strace: exec: No such file or directory
) = 40
1249403877.642324 close(3) = 0
1249403877.642531 munmap(0x2b3b8954a000,4096) = 0
1249403877.642735 exit_group(1) = ?
关于服务器
FTR服务器是一个xen domU,而程序是一个封闭的源代码linux应用程序.此VM是具有相同根文件系统(包括此程序)的另一个VM的副本,可以正常工作.
我已经尝试了以上所有以上同样的问题.
我是否提到根文件系统是通过NFS挂载的.但是它安装了’defaults,nosuid’,它应该包含execute.此外,我能够从该安装的驱动器运行许多其他程序
的/ proc / cpuinfo中：
processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Xeon(TM) cpu 3.00GHz stepping : 1 cpu MHz : 2992.692 cache size : 1024 KB fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm constant_tsc pni monitor ds_cpl cid cx16 xtpr bogmips : 5989.55 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical,48 bits virtual power management:
我可以运行的文件示例
我可以在该服务器上的挂载文件系统上运行其他程序.例如：
$ls -l ls -rwxr-xr-x 1 root root 105576 Jul 25 17:14 ls $file ls ls: ELF 64-bit LSB executable,x86-64,for GNU/Linux 2.6.9,stripped $./ls attr cat cut echo getfacl ln more ... (you get the idea) ... rmdir sort tty $less ls | head ELF Header: Magic: 7f 45 4c 46 02 01 01 00 00 00 00 00 00 00 00 00 Class: ELF64 Data: 2's complement,little endian Version: 1 (current) OS/ABI: UNIX - System V ABI Version: 0 Type: EXEC (Executable file) Machine: Advanced Micro Devices X86-64 Version: 0x1
解决方法
/ proc / cpuinfo中的lm标志表示您的服务器具有64位cpu.
来自文件prog的信息表明该程序是针对32位体系结构编译的.尝试安装32个库.我不熟悉如何在Gentoo中执行此操作,但也许这个Gentoo wiki article可以提供帮助.
我尝试在64位Ubuntu安装上运行Android Debug Bridge时出现了一个类似问题(bash报告文件未找到),因为它编译为32位.
