Trait Syscall 

pub trait Syscall {
    // Required methods
    fn as_any(&self) -> &dyn Any;
    fn pivot_rootfs(&self, path: &Path) -> Result<(), SyscallError>;
    fn chroot(&self, path: &Path) -> Result<(), SyscallError>;
    fn set_ns(&self, rawfd: i32, nstype: CloneFlags) -> Result<(), SyscallError>;
    fn set_id(&self, uid: Uid, gid: Gid) -> Result<(), SyscallError>;
    fn unshare(&self, flags: CloneFlags) -> Result<(), SyscallError>;
    fn set_capability(
        &self,
        cset: CapSet,
        value: &CapsHashSet,
    ) -> Result<(), SyscallError>;
    fn set_hostname(&self, hostname: &str) -> Result<(), SyscallError>;
    fn set_domainname(&self, domainname: &str) -> Result<(), SyscallError>;
    fn set_rlimit(&self, rlimit: &PosixRlimit) -> Result<(), SyscallError>;
    fn get_pwuid(&self, uid: u32) -> Option<Arc<OsStr>>;
    fn mount(
        &self,
        source: Option<&Path>,
        target: &Path,
        fstype: Option<&str>,
        flags: MsFlags,
        data: Option<&str>,
    ) -> Result<(), SyscallError>;
    fn mount_from_fd(
        &self,
        source_fd: &OwnedFd,
        target: &Path,
    ) -> Result<(), SyscallError>;
    fn move_mount(
        &self,
        from_dirfd: BorrowedFd<'_>,
        from_path: Option<&str>,
        to_dirfd: BorrowedFd<'_>,
        to_path: Option<&str>,
        flags: u32,
    ) -> Result<(), SyscallError>;
    fn fsopen(
        &self,
        fstype: Option<&str>,
        flags: u32,
    ) -> Result<OwnedFd, SyscallError>;
    fn fsconfig(
        &self,
        fsfd: BorrowedFd<'_>,
        cmd: u32,
        key: Option<&str>,
        val: Option<&str>,
        aux: c_int,
    ) -> Result<(), SyscallError>;
    fn fsmount(
        &self,
        fsfd: BorrowedFd<'_>,
        flags: u32,
        attr_flags: Option<u64>,
    ) -> Result<OwnedFd, SyscallError>;
    fn open_tree(
        &self,
        dirfd: RawFd,
        path: Option<&str>,
        flags: u32,
    ) -> Result<OwnedFd, SyscallError>;
    fn symlink(&self, original: &Path, link: &Path) -> Result<(), SyscallError>;
    fn mknod(
        &self,
        path: &Path,
        kind: SFlag,
        perm: Mode,
        dev: u64,
    ) -> Result<(), SyscallError>;
    fn chown(
        &self,
        path: &Path,
        owner: Option<Uid>,
        group: Option<Gid>,
    ) -> Result<(), SyscallError>;
    fn set_groups(&self, groups: &[Gid]) -> Result<(), SyscallError>;
    fn close_range(&self, preserve_fds: i32) -> Result<(), SyscallError>;
    fn mount_setattr(
        &self,
        dirfd: BorrowedFd<'_>,
        pathname: &Path,
        flags: u32,
        mount_attr: &MountAttr,
        size: size_t,
    ) -> Result<(), SyscallError>;
    fn set_io_priority(
        &self,
        class: i64,
        priority: i64,
    ) -> Result<(), SyscallError>;
    fn set_mempolicy(
        &self,
        mode: i32,
        nodemask: &[c_ulong],
        maxnode: u64,
    ) -> Result<(), SyscallError>;
    fn umount2(
        &self,
        target: &Path,
        flags: MntFlags,
    ) -> Result<(), SyscallError>;
    fn get_uid(&self) -> Uid;
    fn get_gid(&self) -> Gid;
    fn get_euid(&self) -> Uid;
    fn get_egid(&self) -> Gid;
    fn personality(&self, domain: PersonalityDomain) -> Result<(), SyscallError>;
}

This specifies various kernel/other functionalities required for container management

Required Methods

fn as_any(&self) -> &dyn Any

fn pivot_rootfs(&self, path: &Path) -> Result<(), SyscallError>

fn chroot(&self, path: &Path) -> Result<(), SyscallError>

fn set_ns(&self, rawfd: i32, nstype: CloneFlags) -> Result<(), SyscallError>

fn set_id(&self, uid: Uid, gid: Gid) -> Result<(), SyscallError>

fn unshare(&self, flags: CloneFlags) -> Result<(), SyscallError>

fn set_capability( &self, cset: CapSet, value: &CapsHashSet, ) -> Result<(), SyscallError>

fn set_hostname(&self, hostname: &str) -> Result<(), SyscallError>

fn set_domainname(&self, domainname: &str) -> Result<(), SyscallError>

fn set_rlimit(&self, rlimit: &PosixRlimit) -> Result<(), SyscallError>

fn get_pwuid(&self, uid: u32) -> Option<Arc<OsStr>>

fn mount( &self, source: Option<&Path>, target: &Path, fstype: Option<&str>, flags: MsFlags, data: Option<&str>, ) -> Result<(), SyscallError>

fn mount_from_fd( &self, source_fd: &OwnedFd, target: &Path, ) -> Result<(), SyscallError>

fn move_mount( &self, from_dirfd: BorrowedFd<'_>, from_path: Option<&str>, to_dirfd: BorrowedFd<'_>, to_path: Option<&str>, flags: u32, ) -> Result<(), SyscallError>

fn fsopen( &self, fstype: Option<&str>, flags: u32, ) -> Result<OwnedFd, SyscallError>

fn fsconfig( &self, fsfd: BorrowedFd<'_>, cmd: u32, key: Option<&str>, val: Option<&str>, aux: c_int, ) -> Result<(), SyscallError>

fn fsmount( &self, fsfd: BorrowedFd<'_>, flags: u32, attr_flags: Option<u64>, ) -> Result<OwnedFd, SyscallError>

fn open_tree( &self, dirfd: RawFd, path: Option<&str>, flags: u32, ) -> Result<OwnedFd, SyscallError>

fn symlink(&self, original: &Path, link: &Path) -> Result<(), SyscallError>

fn mknod( &self, path: &Path, kind: SFlag, perm: Mode, dev: u64, ) -> Result<(), SyscallError>

fn chown( &self, path: &Path, owner: Option<Uid>, group: Option<Gid>, ) -> Result<(), SyscallError>

fn set_groups(&self, groups: &[Gid]) -> Result<(), SyscallError>

fn close_range(&self, preserve_fds: i32) -> Result<(), SyscallError>

fn mount_setattr( &self, dirfd: BorrowedFd<'_>, pathname: &Path, flags: u32, mount_attr: &MountAttr, size: size_t, ) -> Result<(), SyscallError>

fn set_io_priority(&self, class: i64, priority: i64) -> Result<(), SyscallError>

fn set_mempolicy( &self, mode: i32, nodemask: &[c_ulong], maxnode: u64, ) -> Result<(), SyscallError>

fn umount2(&self, target: &Path, flags: MntFlags) -> Result<(), SyscallError>

fn get_uid(&self) -> Uid

fn get_gid(&self) -> Gid

fn get_euid(&self) -> Uid

fn get_egid(&self) -> Gid

fn personality(&self, domain: PersonalityDomain) -> Result<(), SyscallError>

Implementors

impl Syscall for LinuxSyscall

impl Syscall for TestHelperSyscall