我正在使用 ubuntu linux。试图将 ARM 解释器的支持添加到 binfmt。我收到权限被拒绝错误。
刚刚在我的机器上添加了对 binfmt 的支持:---
sudo apt-get install binfmt-support
ls 在目录 binfmt_misc 中:--
ignite@ignite:/proc/sys/fs/binfmt_misc$ ls
python2.7 python3.2 register status
binfmt_misc 文件系统已正确安装:---
ignite@ignite:/proc/sys/fs/binfmt_misc$ mount
/dev/sda8 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfsd-fuse on /run/user/ignite/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=ignite)
模块已启动并运行:---
ignite@ignite:/proc/sys/fs/binfmt_misc$ cat /proc/modules | grep binfmt*
binfmt_misc 17260 1 - Live 0x00000000
状态显示启用:-----
ignite@ignite:/proc/sys/fs/binfmt_misc$ cat status
enabled
回显时注册文件时出错,即使使用sudo
:---
ignite@ignite:/proc/sys/fs/binfmt_misc$ sudo echo ':arm:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/var/local/rpi/qemu/bin/qemu-arm:' > /proc/sys/fs/binfmt_misc/register
bash: /proc/sys/fs/binfmt_misc/register: Permission denied
为什么它不允许我回显注册,即使是 sudo ?
编辑:---
此命令有效,创建了arm文件夹:---
ignite@ignite$ echo "echo ':arm:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/local/bin/qemu-arm:' > /proc/sys/fs/binfmt_misc/register" | sudo sh
ignite@ignite:/proc/sys/fs/binfmt_misc$ ls
arm python2.7 python3.2 register status
ignite@ignite:/proc/sys/fs/binfmt_misc$ cat arm
enabled
interpreter /usr/local/bin/qemu-arm
flags:
offset 0
magic 7f454c4601010100000000000000000002002800
mask ffffffffffffff00fffffffffffffffffeffffff
但我无法运行 arm 可执行文件。这是一个pre compiled program
你好世界。
ignite@ignite:~/testing$ file a.out
a.out: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.6.3, not stripped
ignite@ignite:~/testing$ ./a.out
/lib/ld-linux-armhf.so.3: No such file or directory
我是否必须执行 chroot 才能执行此 arm 可执行文件?