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use std::path::PathBuf;
use crate::runtime::Capability;
use serde::{Deserialize, Serialize};
make_pub!(
/// Process contains information to start a specific application inside the
/// container.
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "camelCase")]
#[cfg_attr(
feature = "builder",
derive(derive_builder::Builder, getset::CopyGetters, getset::Getters),
builder(default, pattern = "owned", setter(into, strip_option))
)]
struct Process {
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get_copy = "pub"))]
/// Terminal creates an interactive terminal for the container.
terminal: Option<bool>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get_copy = "pub"))]
/// ConsoleSize specifies the size of the console.
console_size: Option<Box>,
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// User specifies user information for the process.
user: User,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// Args specifies the binary and arguments for the application to
/// execute.
args: Option<Vec<String>>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// CommandLine specifies the full command line for the application to
/// execute on Windows.
command_line: Option<String>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// Env populates the process environment for the process.
env: Option<Vec<String>>,
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// Cwd is the current working directory for the process and must be
/// relative to the container's root.
cwd: PathBuf,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// Capabilities are Linux capabilities that are kept for the process.
capabilities: Option<LinuxCapabilities>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// Rlimits specifies rlimit options to apply to the process.
rlimits: Option<Vec<LinuxRlimit>>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get_copy = "pub"))]
/// NoNewPrivileges controls whether additional privileges could be
/// gained by processes in the container.
no_new_privileges: Option<bool>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// ApparmorProfile specifies the apparmor profile for the container.
apparmor_profile: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get_copy = "pub"))]
/// Specify an oom_score_adj for the container.
oom_score_adj: Option<i32>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// SelinuxLabel specifies the selinux context that the container
/// process is run as.
selinux_label: Option<String>,
}
);
// Default impl for processes in the container
impl Default for Process {
fn default() -> Self {
Process {
// Creates an interactive terminal for container by default
terminal: true.into(),
// Gives default console size of 0, 0
console_size: Default::default(),
// Gives process a uid and gid of 0 (root)
user: Default::default(),
// By default executes sh command, giving user shell
args: vec!["sh".to_string()].into(),
// Sets linux default enviroment for binaries and default xterm emulator
env: vec![
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin".into(),
"TERM=xterm".into(),
]
.into(),
// Sets cwd of process to the container root by default
cwd: "/".into(),
// By default does not allow process to gain additional privileges
no_new_privileges: true.into(),
// Empty String, no default apparmor
apparmor_profile: Default::default(),
// Empty String, no default selinux
selinux_label: Default::default(),
// See impl Default for LinuxCapabilities
capabilities: Some(Default::default()),
// Sets the default maximum of 1024 files the process can open
// This is the same as the linux kernel default
rlimits: vec![LinuxRlimit {
typ: LinuxRlimitType::RlimitNofile,
hard: 1024,
soft: 1024,
}]
.into(),
oom_score_adj: None,
command_line: None,
}
}
}
make_pub!(
#[derive(Clone, Copy, Debug, Default, Deserialize, Eq, PartialEq, Serialize)]
#[cfg_attr(
feature = "builder",
derive(derive_builder::Builder, getset::CopyGetters),
builder(default, pattern = "owned", setter(into, strip_option)),
getset(get_copy = "pub")
)]
/// Box specifies dimensions of a rectangle. Used for specifying the size of
/// a console.
struct Box {
#[serde(default)]
/// Height is the vertical dimension of a box.
height: u64,
#[serde(default)]
/// Width is the horizontal dimension of a box.
width: u64,
}
);
#[derive(Clone, Copy, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
/// Available rlimit types (see <https://man7.org/linux/man-pages/man2/getrlimit.2.html>)
pub enum LinuxRlimitType {
/// Limit in seconds of the amount of CPU time that the process can consume.
RlimitCpu,
/// Maximum size in bytes of the files that the process creates.
RlimitFsize,
/// Maximum size of the process's data segment (init data, uninit data and
/// heap) in bytes.
RlimitData,
/// Maximum size of the proces stack in bytes.
RlimitStack,
/// Maximum size of a core dump file in bytes.
RlimitCore,
/// Limit on the process's resident set (the number of virtual pages
/// resident in RAM).
RlimitRss,
/// Limit on number of threads for the real uid calling processes.
RlimitNproc,
/// One greator than the maximum number of file descritors that one process
/// may open.
RlimitNofile,
/// Maximum number of bytes of memory that may be locked into RAM.
RlimitMemlock,
/// Maximum size of the process's virtual memory(address space) in bytes.
RlimitAs,
/// Limit on the number of locks and leases for the process.
RlimitLocks,
/// Limit on number of signals that may be queued for the process.
RlimitSigpending,
/// Limit on the number of bytes that can be allocated for POSIX message
/// queue.
RlimitMsgqueue,
/// Specifies a ceiling to which the process's nice value can be raised.
RlimitNice,
/// Specifies a ceiling on the real-time priority.
RlimitRtprio,
/// This is a limit (in microseconds) on the amount of CPU time that a
/// process scheduled under a real-time scheduling policy may consume
/// without making a blocking system call.
RlimitRttime,
}
impl Default for LinuxRlimitType {
fn default() -> Self {
Self::RlimitCpu
}
}
make_pub!(
#[derive(Clone, Copy, Debug, Default, Deserialize, Eq, PartialEq, Serialize)]
#[cfg_attr(
feature = "builder",
derive(derive_builder::Builder, getset::CopyGetters),
builder(default, pattern = "owned", setter(into, strip_option)),
getset(get_copy = "pub")
)]
/// RLimit types and restrictions.
struct LinuxRlimit {
#[serde(rename = "type")]
/// Type of Rlimit to set
typ: LinuxRlimitType,
#[serde(default)]
/// Hard limit for specified type
hard: u64,
#[serde(default)]
/// Soft limit for specified type
soft: u64,
}
);
make_pub!(
#[derive(Clone, Debug, Default, Deserialize, Eq, PartialEq, Serialize)]
#[serde(rename_all = "camelCase")]
#[cfg_attr(
feature = "builder",
derive(derive_builder::Builder, getset::CopyGetters, getset::Getters),
builder(default, pattern = "owned", setter(into, strip_option))
)]
/// User id (uid) and group id (gid) tracks file permssions.
struct User {
#[serde(default)]
#[cfg_attr(feature = "builder", getset(get_copy = "pub"))]
/// UID is the user id.
uid: u32,
#[serde(default)]
#[cfg_attr(feature = "builder", getset(get_copy = "pub"))]
/// GID is the group id.
gid: u32,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// AdditionalGids are additional group ids set for the container's
/// process.
additional_gids: Option<Vec<u32>>,
#[serde(default, skip_serializing_if = "Option::is_none")]
#[cfg_attr(feature = "builder", getset(get = "pub"))]
/// Username is the user name.
username: Option<String>,
}
);
make_pub!(
#[derive(Clone, Debug, Deserialize, Eq, PartialEq, Serialize)]
#[cfg_attr(
feature = "builder",
derive(derive_builder::Builder, getset::Getters),
builder(default, pattern = "owned", setter(into, strip_option)),
getset(get = "pub")
)]
/// LinuxCapabilities specifies the list of allowed capabilities that are
/// kept for a process. <http://man7.org/linux/man-pages/man7/capabilities.7.html>
struct LinuxCapabilities {
#[serde(default, skip_serializing_if = "Option::is_none")]
/// Bounding is the set of capabilities checked by the kernel.
bounding: Option<Vec<Capability>>,
#[serde(default, skip_serializing_if = "Option::is_none")]
/// Effective is the set of capabilities checked by the kernel.
effective: Option<Vec<Capability>>,
#[serde(default, skip_serializing_if = "Option::is_none")]
/// Inheritable is the capabilities preserved across execve.
inheritable: Option<Vec<Capability>>,
#[serde(default, skip_serializing_if = "Option::is_none")]
/// Permitted is the limiting superset for effective capabilities.
permitted: Option<Vec<Capability>>,
#[serde(default, skip_serializing_if = "Option::is_none")]
/// Ambient is the ambient set of capabilities that are kept.
ambient: Option<Vec<Capability>>,
}
);
// Default container's linux capabilities:
// CAP_AUDIT_WRITE gives container ability to write to linux audit logs,
// CAP_KILL gives container ability to kill non root processes
// CAP_NET_BIND_SERVICE allows container to bind to ports below 1024
impl Default for LinuxCapabilities {
fn default() -> Self {
let audit_write = Capability::AuditWrite;
let cap_kill = Capability::Kill;
let net_bind = Capability::NetBindService;
let default_vec = vec![audit_write, cap_kill, net_bind];
LinuxCapabilities {
bounding: default_vec.clone().into(),
effective: default_vec.clone().into(),
inheritable: default_vec.clone().into(),
permitted: default_vec.clone().into(),
ambient: default_vec.into(),
}
}
}