1 files changed, 104 insertions, 0 deletions
diff --git a/vendor/rustix/src/imp/linux_raw/runtime/syscalls.rs b/vendor/rustix/src/imp/linux_raw/runtime/syscalls.rs
new file mode 100644
index 000000000..49a29b2a2
--- /dev/null
+++ b/vendor/rustix/src/imp/linux_raw/runtime/syscalls.rs
@@ -0,0 +1,104 @@
+//! linux_raw syscalls supporting `rustix::runtime`.
+//!
+//! # Safety
+//!
+//! See the `rustix::imp` module documentation for details.
+#![allow(unsafe_code)]
+#![allow(clippy::undocumented_unsafe_blocks)]
+
+use super::super::c;
+#[cfg(target_arch = "x86")]
+use super::super::conv::by_mut;
+use super::super::conv::{c_int, c_uint, ret, ret_c_uint, ret_error, ret_usize_infallible, zero};
+use crate::fd::BorrowedFd;
+use crate::ffi::CStr;
+use crate::fs::AtFlags;
+use crate::io;
+use crate::process::{Pid, RawNonZeroPid};
+use linux_raw_sys::general::{__kernel_pid_t, PR_SET_NAME, SIGCHLD};
+#[cfg(target_arch = "x86_64")]
+use {super::super::conv::ret_infallible, linux_raw_sys::general::ARCH_SET_FS};
+
+#[inline]
+pub(crate) unsafe fn fork() -> io::Result<Option<Pid>> {
+    let pid = ret_c_uint(syscall_readonly!(
+        __NR_clone,
+        c_uint(SIGCHLD),
+        zero(),
+        zero(),
+        zero(),
+        zero()
+    ))?;
+    Ok(Pid::from_raw(pid))
+}
+
+pub(crate) unsafe fn execveat(
+    dirfd: BorrowedFd<'_>,
+    path: &CStr,
+    args: *const *const u8,
+    env_vars: *const *const u8,
+    flags: AtFlags,
+) -> io::Errno {
+    ret_error(syscall_readonly!(
+        __NR_execveat,
+        dirfd,
+        path,
+        args,
+        env_vars,
+        flags
+    ))
+}
+
+pub(crate) unsafe fn execve(
+    path: &CStr,
+    args: *const *const u8,
+    env_vars: *const *const u8,
+) -> io::Errno {
+    ret_error(syscall_readonly!(__NR_execve, path, args, env_vars))
+}
+
+pub(crate) mod tls {
+    #[cfg(target_arch = "x86")]
+    use super::super::tls::UserDesc;
+    use super::*;
+
+    #[cfg(target_arch = "x86")]
+    #[inline]
+    pub(crate) unsafe fn set_thread_area(u_info: &mut UserDesc) -> io::Result<()> {
+        ret(syscall!(__NR_set_thread_area, by_mut(u_info)))
+    }
+
+    #[cfg(target_arch = "arm")]
+    #[inline]
+    pub(crate) unsafe fn arm_set_tls(data: *mut c::c_void) -> io::Result<()> {
+        ret(syscall_readonly!(__ARM_NR_set_tls, data))
+    }
+
+    #[cfg(target_arch = "x86_64")]
+    #[inline]
+    pub(crate) unsafe fn set_fs(data: *mut c::c_void) {
+        ret_infallible(syscall_readonly!(
+            __NR_arch_prctl,
+            c_uint(ARCH_SET_FS),
+            data
+        ))
+    }
+
+    #[inline]
+    pub(crate) unsafe fn set_tid_address(data: *mut c::c_void) -> Pid {
+        let tid: i32 =
+            ret_usize_infallible(syscall_readonly!(__NR_set_tid_address, data)) as __kernel_pid_t;
+        debug_assert_ne!(tid, 0);
+        Pid::from_raw_nonzero(RawNonZeroPid::new_unchecked(tid as u32))
+    }
+
+    #[inline]
+    pub(crate) unsafe fn set_thread_name(name: &CStr) -> io::Result<()> {
+        ret(syscall_readonly!(__NR_prctl, c_uint(PR_SET_NAME), name))
+    }
+
+    #[inline]
+    pub(crate) fn exit_thread(code: c::c_int) -> ! {
+        unsafe { syscall_noreturn!(__NR_exit, c_int(code)) }
+    }
+}