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//! 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(linux_kernel)]
use crate::system::Sysinfo;
use core::mem::MaybeUninit;
#[cfg(not(any(
target_os = "emscripten",
target_os = "espidf",
target_os = "redox",
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 = "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)?,
))
}
}
|
