| //! linux_raw syscalls supporting `rustix::system`. |
| //! |
| //! # Safety |
| //! |
| //! See the `rustix::backend` module documentation for details. |
| #![allow(unsafe_code, clippy::undocumented_unsafe_blocks)] |
| |
| use super::types::RawUname; |
| use crate::backend::c; |
| use crate::backend::conv::{c_int, ret, ret_infallible, slice}; |
| use crate::io; |
| use crate::system::{RebootCommand, Sysinfo}; |
| use core::mem::MaybeUninit; |
| |
| #[inline] |
| pub(crate) fn uname() -> RawUname { |
| let mut uname = MaybeUninit::<RawUname>::uninit(); |
| unsafe { |
| ret_infallible(syscall!(__NR_uname, &mut uname)); |
| uname.assume_init() |
| } |
| } |
| |
| #[inline] |
| pub(crate) fn sysinfo() -> Sysinfo { |
| let mut info = MaybeUninit::<Sysinfo>::uninit(); |
| unsafe { |
| ret_infallible(syscall!(__NR_sysinfo, &mut info)); |
| info.assume_init() |
| } |
| } |
| |
| #[inline] |
| pub(crate) fn sethostname(name: &[u8]) -> io::Result<()> { |
| let (ptr, len) = slice(name); |
| unsafe { ret(syscall_readonly!(__NR_sethostname, ptr, len)) } |
| } |
| |
| #[inline] |
| pub(crate) fn reboot(cmd: RebootCommand) -> io::Result<()> { |
| unsafe { |
| ret(syscall_readonly!( |
| __NR_reboot, |
| c_int(c::LINUX_REBOOT_MAGIC1), |
| c_int(c::LINUX_REBOOT_MAGIC2), |
| c_int(cmd as i32) |
| )) |
| } |
| } |