在Ubuntu 14.04.2上使用Jailkit -/dev/pt的Chroot没有这样的文件或目录

Question

在过去的几天里，我一直试图在我的Ubuntu服务器上设置一个chroot，但是我遇到了一个问题。我尝试过几种在Ubuntu上设置chroot的不同方法，包括自己手动设置文件夹权限，然后静态地链接库，用于我想要允许的二进制文件，但目前我正在使用Jailkit来设置chroot环境，但是对于这两个设置，在设置chroot和尝试登录ssh之后，我都遇到了相同的问题。当我运行调试sshd时，我发现这是因为sshd由于某种原因无法找到/dev/pt，即使它在chroot环境中。

下面是我的安装程序，它都是由Jailkit填充的，除了使用

sudo mount -o  bind /dev/pts /data/jail/dev/pts    


/data/jail/home/user
/data/jail/dev
/data/jail/dev/pts
/data/jail/dev/tty

调试sshd显示了以下内容：

debug3: safely_chroot: checking '/'
debug3: safely_chroot: checking '/data/'
debug3: safely_chroot: checking '/data/jail/'
debug3: safely_chroot: checking '/data/jail/home/'
debug3: safely_chroot: checking '/data/jail/home/user'
Changed root directory to "/data/jail/home/user"
debug1: permanently_set_uid: 1002/1003
debug2: set_newkeys: mode 0
debug2: set_newkeys: mode 1
debug1: Entering interactive session for SSH2.
debug2: fd 6 setting O_NONBLOCK
debug2: fd 8 setting O_NONBLOCK
debug1: server_init_dispatch_20
debug3: Received SSH2_MSG_IGNORE
debug1: server_input_channel_open: ctype session rchan 256 win 16384 max 16384
debug1: input_session_request
debug1: channel 0: new [server-session]
debug2: session_new: allocate (allocated 0 max 10)
debug3: session_unused: session id 0 unused
debug1: session_new: session 0
debug1: session_open: channel 0
debug1: session_open: session 0: link with channel 0
debug1: server_input_channel_open: confirm session
debug1: server_input_channel_req: channel 0 request pty-req reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req pty-req
debug1: Allocating pty.
debug3: mm_request_send entering: type 28
debug3: mm_pty_allocate: waiting for MONITOR_ANS_PTY
debug3: mm_request_receive_expect entering: type 29
debug3: mm_request_receive entering
debug3: mm_request_receive entering
debug3: monitor_read: checking request 28
debug3: mm_answer_pty entering
debug2: session_new: allocate (allocated 0 max 10)
debug3: session_unused: session id 0 unused
debug1: session_new: session 0
debug1: SELinux support disabled
debug3: mm_request_send entering: type 29
debug3: mm_answer_pty: tty /dev/pts/8 ptyfd 5
debug1: session_pty_req: session 0 alloc /dev/pts/8
debug1: server_input_channel_req: channel 0 request shell reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req shell
Starting session: shell on pts/8 for user from *.*.*.* port 54006
debug2: fd 3 setting TCP_NODELAY
debug3: packet_set_tos: set IP_TOS 0x10
debug2: channel 0: rfd 11 isatty
debug2: fd 11 setting O_NONBLOCK
debug3: fd 9 is O_NONBLOCK
debug1: Setting controlling tty using TIOCSCTTY.
/dev/pts/8: No such file or directory
open /dev/tty failed - could not set controlling tty: No such file or directory
debug3: mm_request_receive entering
debug3: monitor_read: checking request 156
debug3: mm_answer_consolekit_register entering
debug1: session_by_tty: session 0 tty /dev/pts/8
debug1: Unable to open session: The name org.freedesktop.ConsoleKit was not provided by any .service files

Answer 1

据我所知，ChrootDirectory没有正确设置。

应将其设置为：

ChrootDirectory /data/jail