| //! libc syscalls supporting `rustix::process`. |
| |
| use super::types::RawUname; |
| use crate::backend::c; |
| #[cfg(not(target_os = "wasi"))] |
| use crate::backend::conv::ret_infallible; |
| #[cfg(target_os = "linux")] |
| use crate::system::RebootCommand; |
| #[cfg(linux_kernel)] |
| use crate::system::Sysinfo; |
| use core::mem::MaybeUninit; |
| #[cfg(not(any( |
| target_os = "emscripten", |
| target_os = "espidf", |
| target_os = "redox", |
| target_os = "vita", |
| target_os = "wasi" |
| )))] |
| use {crate::backend::conv::ret, crate::io}; |
| |
| #[cfg(not(target_os = "wasi"))] |
| #[inline] |
| pub(crate) fn uname() -> RawUname { |
| let mut uname = MaybeUninit::<RawUname>::uninit(); |
| unsafe { |
| let r = c::uname(uname.as_mut_ptr()); |
| |
| // On POSIX, `uname` is documented to return non-negative on success |
| // instead of the usual 0, though some specific systems do document |
| // that they always use zero allowing us to skip this check. |
| #[cfg(not(any(apple, freebsdlike, linux_like, target_os = "netbsd")))] |
| let r = core::cmp::min(r, 0); |
| |
| ret_infallible(r); |
| uname.assume_init() |
| } |
| } |
| |
| #[cfg(linux_kernel)] |
| pub(crate) fn sysinfo() -> Sysinfo { |
| let mut info = MaybeUninit::<Sysinfo>::uninit(); |
| unsafe { |
| ret_infallible(c::sysinfo(info.as_mut_ptr())); |
| info.assume_init() |
| } |
| } |
| |
| #[cfg(not(any( |
| target_os = "emscripten", |
| target_os = "espidf", |
| target_os = "redox", |
| target_os = "vita", |
| target_os = "wasi" |
| )))] |
| pub(crate) fn sethostname(name: &[u8]) -> io::Result<()> { |
| unsafe { |
| ret(c::sethostname( |
| name.as_ptr().cast(), |
| name.len().try_into().map_err(|_| io::Errno::INVAL)?, |
| )) |
| } |
| } |
| |
| #[cfg(target_os = "linux")] |
| pub(crate) fn reboot(cmd: RebootCommand) -> io::Result<()> { |
| unsafe { ret(c::reboot(cmd as i32)) } |
| } |