Chroot 在 Ubuntu 14.04.2 上使用 Jailkit - /dev/pts 沒有這樣的文件或目錄

在過去的幾天裡，我一直試圖在我的 Ubuntu 伺服器上設置一個 chroot，但我遇到了一個問題。我嘗試了幾種在 Ubuntu 上設置 chroot 的不同方法，包括自己手動設置文件夾權限，然後為我想要允許的二進製文件靜態連結庫，但目前我正在使用 Jailkit 設置 chroot 環境但是使用這兩種設置我都遇到了同樣的問題，在設置 chroot 並嘗試登錄 ssh 後，我立即受到強制關閉終端的歡迎。當我執行調試 sshd 時，我發現這是因為 sshd 由於某種原因無法找到 /dev/pts，即使它位於 chroot 環境中。

這是我的設置，它全部由 Jailkit 填充，除了 /dev/pts 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

這是調試 sshd 顯示的內容：

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

據我所知，ChrootDirectory沒有正確設置。

它應該設置為：

ChrootDirectory /data/jail

引用自：https://serverfault.com/questions/679197