diff --git a/components/engine/docs/sources/reference/run.md b/components/engine/docs/sources/reference/run.md index 3fed51a189..ea98fee38d 100644 --- a/components/engine/docs/sources/reference/run.md +++ b/components/engine/docs/sources/reference/run.md @@ -642,7 +642,51 @@ This can be overridden using a third `:rwm` set of options to each `--device` fl In addition to `--privileged`, the operator can have fine grain control over the capabilities using `--cap-add` and `--cap-drop`. By default, Docker has a default -list of capabilities that are kept. Both flags support the value `all`, so if the +list of capabilities that are kept. The following table lists the Linux capability options which can be added or dropped. + +| Capability Key | Capability Description | +| :----------------- | :---------------| :-------------------- | +| SETPCAP | Modify process capabilities. | +| SYS_MODULE| Load and unload kernel modules. | +| SYS_RAWIO | Perform I/O port operations (iopl(2) and ioperm(2)). | +| SYS_PACCT | Use acct(2), switch process accounting on or off. | +| SYS_ADMIN | Perform a range of system administration operations. | +| SYS_NICE | Raise process nice value (nice(2), setpriority(2)) and change the nice value for arbitrary processes. | +| SYS_RESOURCE | Override resource Limits. | +| SYS_TIME | Set system clock (settimeofday(2), stime(2), adjtimex(2)); set real-time (hardware) clock. | +| SYS_TTY_CONFIG | Use vhangup(2); employ various privileged ioctl(2) operations on virtual terminals. | +| MKNOD | Create special files using mknod(2). | +| AUDIT_WRITE | Write records to kernel auditing log. | +| AUDIT_CONTROL | Enable and disable kernel auditing; change auditing filter rules; retrieve auditing status and filtering rules. | +| MAC_OVERRIDE | Allow MAC configuration or state changes. Implemented for the Smack LSM. | +| MAC_ADMIN | Override Mandatory Access Control (MAC). Implemented for the Smack Linux Security Module (LSM). | +| NET_ADMIN | Perform various network-related operations. | +| SYSLOG | Perform privileged syslog(2) operations. | +| CHOWN | Make arbitrary changes to file UIDs and GIDs (see chown(2)). | +| NET_RAW | Use RAW and PACKET sockets. | +| DAC_OVERRIDE | Bypass file read, write, and execute permission checks. | +| FOWNER | Bypass permission checks on operations that normally require the file system UID of the process to match the UID of the file. | +| DAC_READ_SEARCH | Bypass file read permission checks and directory read and execute permission checks. | +| FSETID | Don't clear set-user-ID and set-group-ID permission bits when a file is modified. | +| KILL | Bypass permission checks for sending signals. | +| SETGID | Make arbitrary manipulations of process GIDs and supplementary GID list. | +| SETUID | Make arbitrary manipulations of process UIDs. | +| LINUX_IMMUTABLE | Set the FS_APPEND_FL and FS_IMMUTABLE_FL i-node flags. | +| NET_BIND_SERVICE | Bind a socket to internet domain privileged ports (port numbers less than 1024). | +| NET_BROADCAST | Make socket broadcasts, and listen to multicasts. | +| IPC_LOCK | Lock memory (mlock(2), mlockall(2), mmap(2), shmctl(2)). | +| IPC_OWNER | Bypass permission checks for operations on System V IPC objects. | +| SYS_CHROOT | Use chroot(2), change root directory. | +| SYS_PTRACE | Trace arbitrary processes using ptrace(2). | +| SYS_BOOT | Use reboot(2) and kexec_load(2), reboot and load a new kernel for later execution. | +| LEASE | Establish leases on arbitrary files (see fcntl(2)). | +| SETFCAP | Set file capabilities.| +| WAKE_ALARM | Trigger something that will wake up the system. | +| BLOCK_SUSPEND | Employ features that can block system suspend. | + +Further reference information is available on the [capabilities(7) - Linux man page](http://linux.die.net/man/7/capabilities) + +Both flags support the value `all`, so if the operator wants to have all capabilities but `MKNOD` they could use: $ docker run --cap-add=ALL --cap-drop=MKNOD ...