Enum capabilities::Capability

pub enum Capability {
    CAP_CHOWN,
    CAP_DAC_OVERRIDE,
    CAP_DAC_READ_SEARCH,
    CAP_FOWNER,
    CAP_FSETID,
    CAP_KILL,
    CAP_SETGID,
    CAP_SETUID,
    CAP_SETPCAP,
    CAP_LINUX_IMMUTABLE,
    CAP_NET_BIND_SERVICE,
    CAP_NET_BROADCAST,
    CAP_NET_ADMIN,
    CAP_NET_RAW,
    CAP_IPC_LOCK,
    CAP_IPC_OWNER,
    CAP_SYS_MODULE,
    CAP_SYS_RAWIO,
    CAP_SYS_CHROOT,
    CAP_SYS_PTRACE,
    CAP_SYS_PACCT,
    CAP_SYS_ADMIN,
    CAP_SYS_BOOT,
    CAP_SYS_NICE,
    CAP_SYS_RESOURCE,
    CAP_SYS_TIME,
    CAP_SYS_TTY_CONFIG,
    CAP_MKNOD,
    CAP_LEASE,
    CAP_AUDIT_WRITE,
    CAP_AUDIT_CONTROL,
    CAP_SETFCAP,
    CAP_MAC_OVERRIDE,
    CAP_MAC_ADMIN,
    CAP_SYSLOG,
    CAP_WAKE_ALARM,
    CAP_BLOCK_SUSPEND,
    CAP_AUDIT_READ,
    CAP_LAST_CAP,
}

Capability descriptions taken from: https://github.com/torvalds/linux/blob/master/include/uapi/linux/capability.h

Variants

CAP_CHOWN

In a system with the [_POSIX_CHOWN_RESTRICTED] option defined, this overrides the restriction of changing file ownership and group ownership.

CAP_DAC_OVERRIDE

Override all DAC access, including ACL execute access if [_POSIX_ACL] is defined. Excluding DAC access covered by CAP_LINUX_IMMUTABLE.

CAP_DAC_READ_SEARCH

Overrides all DAC restrictions regarding read and search on files and directories, including ACL restrictions if [_POSIX_ACL] is defined. Excluding DAC access covered by CAP_LINUX_IMMUTABLE.

CAP_FOWNER

Overrides all restrictions about allowed operations on files, where file owner ID must be equal to the user ID, except where CAP_FSETID is applicable. It doesn't override MAC and DAC restrictions.

CAP_FSETID

Overrides the following restrictions that the effective user ID shall match the file owner ID when setting the S_ISUID and S_ISGID bits on that file; that the effective group ID (or one of the supplementary group IDs) shall match the file owner ID when setting the S_ISGID bit on that file; that the S_ISUID and S_ISGID bits are cleared on successful return from chown(2) (not implemented).

CAP_KILL

Overrides the restriction that the real or effective user ID of a process sending a signal must match the real or effective user ID of the process receiving the signal.

CAP_SETGID

• Allows setgid(2) manipulation
• Allows setgroups(2) manipulation
• Allows forged gids on socket credentials passing.

CAP_SETUID

• Allows set*uid(2) manipulation (including fsuid).
• Allows forged pids on socket credentials passing.

CAP_SETPCAP

• Without VFS support for capabilities:
  • Transfer any capability in your permitted set to any pid, remove any capability in your permitted set from any pid.
• With VFS support for capabilities (neither of above, but)
  • Add any capability from current's capability bounding set to the current process' inheritable set.
  • Allow taking bits out of capability bounding set
  • Allow modification of the securebits for a process

CAP_LINUX_IMMUTABLE

Allow modification of S_IMMUTABLE and S_APPEND file attributes

CAP_NET_BIND_SERVICE

• Allows binding to TCP/UDP sockets below 1024,
• Allows binding to ATM VCIs below 32

CAP_NET_BROADCAST

Allows broadcasting, listen to multicast

CAP_NET_ADMIN

• Allow interface configuration
• Allow administration of IP firewall, masquerading and accounting
• Allow setting debug option on sockets
• Allow modification of routing tables
• Allow setting arbitrary process / process group ownership on sockets
• Allow binding to any address for transparent proxying (also via NET_RAW)
• Allow setting TOS (type of service)
• Allow setting promiscuous mode
• Allow clearing driver statistics
• Allow multicasting
• Allow read/write of device-specific registers
• Allow activation of ATM control sockets

CAP_NET_RAW

• Allow use of RAW sockets
• Allow use of PACKET sockets
• Allow binding to any address for transparent proxying (also via NET_ADMIN)

CAP_IPC_LOCK

• Allow locking of shared memory segments
• Allow mlock and mlockall (which doesn't really have anything to do with IPC)

CAP_IPC_OWNER

Override IPC ownership checks

CAP_SYS_MODULE

Insert and remove kernel modules - modify kernel without limit

CAP_SYS_RAWIO

• Allow ioperm/iopl access
• Allow sending USB messages to any device via /proc/bus/usb

CAP_SYS_CHROOT

Allow the use of chroot

CAP_SYS_PTRACE

Allow ptrace() of any process

CAP_SYS_PACCT

Allow configuration of process accounting

CAP_SYS_ADMIN

• Allow configuration of the secure attention key
• Allow administration of the random device
• Allow examination and configuration of disk quotas
• Allow setting the domainname
• Allow setting the hostname
• Allow calling bdflush()
• Allow mount() and umount(), setting up new smb connection
• Allow some autofs root ioctls
• Allow nfsservctl
• Allow VM86_REQUEST_IRQ
• Allow to read/write pci config on alpha
• Allow irix_prctl on mips (setstacksize)
• Allow flushing all cache on m68k (sys_cacheflush)
• Allow removing semaphores
• Used instead of CAP_CHOWN to "chown" IPC message queues, semaphores and shared memory
• Allow locking/unlocking of shared memory segment
• Allow turning swap on/off
• Allow forged pids on socket credentials passing
• Allow setting readahead and flushing buffers on block devices
• Allow setting geometry in floppy driver
• Allow turning DMA on/off in xd driver
• Allow administration of md devices (mostly the above, but some extra ioctls)
• Allow tuning the ide driver
• Allow access to the nvram device
• Allow administration of apm_bios, serial and bttv (TV) device
• Allow manufacturer commands in isdn CAPI support driver
• Allow reading non-standardized portions of pci configuration space
• Allow DDI debug ioctl on sbpcd driver
• Allow setting up serial ports
• Allow sending raw qic-117 commands
• Allow enabling/disabling tagged queuing on SCSI controllers and sending arbitrary SCSI commands
• Allow setting encryption key on loopback filesystem
• Allow setting zone reclaim policy

CAP_SYS_BOOT

Allow use of reboot()

CAP_SYS_NICE

• Allow raising priority and setting priority on other (different UID) processes
• Allow use of FIFO and round-robin (realtime) scheduling on own processes and setting the scheduling algorithm used by another process.
• Allow setting cpu affinity on other processes

CAP_SYS_RESOURCE

• Override resource limits. Set resource limits.
• Override quota limits.
• Override reserved space on ext2 filesystem
• Modify data journaling mode on ext3 filesystem (uses journaling resources)
• NOTE: ext2 honors fsuid when checking for resource overrides, so you can override using fsuid too.
• Override size restrictions on IPC message queues
• Allow more than 64hz interrupts from the real-time clock
• Override max number of consoles on console allocation
• Override max number of keymaps

CAP_SYS_TIME

• Allow manipulation of system clock
• Allow irix_stime on mips
• Allow setting the real-time clock

CAP_SYS_TTY_CONFIG

• Allow configuration of tty devices
• Allow vhangup() of tty

CAP_MKNOD

Allow the privileged aspects of mknod()

CAP_LEASE

Allow taking of leases on files

CAP_AUDIT_WRITE

Allow writing the audit log via unicast netlink socket

CAP_AUDIT_CONTROL

Allow configurationof audit via unicast netlink socket

CAP_SETFCAP

Set file capabilities

CAP_MAC_OVERRIDE

Override MAC access. The base kernel enforces no MAC policy. An LSM may enforce a MAC policy, and if it does and it chooses to implement capability based overrides of that policy, this is the capability it should use to do so.

CAP_MAC_ADMIN

Allow MAC configuration or state changes. The base kernel requires no MAC configuration. An LSM may enforce a MAC policy, and if it does and it chooses to implement capability based checks on modifications to that policy or the data required to maintain it, this is the capability it should use to do so.

CAP_SYSLOG

Allow configuring the kernel's syslog (printk behaviour)

CAP_WAKE_ALARM

Allow triggering something that will wake the system

CAP_BLOCK_SUSPEND

Allow preventing system suspends

CAP_AUDIT_READ

Allow reading the audit log via multicast netlink socket

CAP_LAST_CAP

The LAST capability option

Trait Implementations

impl Copy for Capability

impl Clone for Capability

fn clone(&self) -> Capability

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Bound for Capability

fn is_bound(self) -> bool

Returns true if the Capability has been applied to the current process via a call to cap_get_bound.

fn drop_bound(self) -> bool

Drops the capability for the current process via a call to cap_drop_bound.

impl From<cap_value_t> for Capability

fn from(c: cap_value_t) -> Capability

Performs the conversion.

impl FromStr for Capability

type Err = ()

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Capability, ()>

Parses a string s to return a value of this type.

impl Display for Capability

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.