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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/rustix/src/backend/linux_raw/runtime/syscalls.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/rustix/src/backend/linux_raw/runtime/syscalls.rs')
-rw-r--r--vendor/rustix/src/backend/linux_raw/runtime/syscalls.rs318
1 files changed, 0 insertions, 318 deletions
diff --git a/vendor/rustix/src/backend/linux_raw/runtime/syscalls.rs b/vendor/rustix/src/backend/linux_raw/runtime/syscalls.rs
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--- a/vendor/rustix/src/backend/linux_raw/runtime/syscalls.rs
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@@ -1,318 +0,0 @@
-//! linux_raw syscalls supporting `rustix::runtime`.
-//!
-//! # Safety
-//!
-//! See the `rustix::backend` module documentation for details.
-#![allow(unsafe_code, clippy::undocumented_unsafe_blocks)]
-
-use crate::backend::c;
-#[cfg(target_arch = "x86")]
-use crate::backend::conv::by_mut;
-#[cfg(target_arch = "x86_64")]
-use crate::backend::conv::c_uint;
-use crate::backend::conv::{
- by_ref, c_int, ret, ret_c_int, ret_c_int_infallible, ret_error, ret_infallible, ret_void_star,
- size_of, zero,
-};
-#[cfg(feature = "fs")]
-use crate::fd::BorrowedFd;
-use crate::ffi::CStr;
-#[cfg(feature = "fs")]
-use crate::fs::AtFlags;
-use crate::io;
-use crate::pid::{Pid, RawPid};
-use crate::runtime::{Fork, How, Sigaction, Siginfo, Sigset, Stack};
-use crate::signal::Signal;
-use crate::timespec::Timespec;
-use crate::utils::option_as_ptr;
-use core::ffi::c_void;
-use core::mem::MaybeUninit;
-#[cfg(target_pointer_width = "32")]
-use linux_raw_sys::general::__kernel_old_timespec;
-use linux_raw_sys::general::kernel_sigset_t;
-#[cfg(target_arch = "x86_64")]
-use linux_raw_sys::general::ARCH_SET_FS;
-
-#[inline]
-pub(crate) unsafe fn fork() -> io::Result<Fork> {
- let mut child_pid = MaybeUninit::<RawPid>::uninit();
-
- // Unix `fork` only returns the child PID in the parent; we'd like it in
- // the child too, so set `CLONE_CHILD_SETTID` and pass in the address of
- // a memory location to store it to in the child.
- //
- // Architectures differ on the order of the parameters.
- #[cfg(target_arch = "x86_64")]
- let pid = ret_c_int(syscall_readonly!(
- __NR_clone,
- c_int(c::SIGCHLD | c::CLONE_CHILD_SETTID),
- zero(),
- zero(),
- &mut child_pid,
- zero()
- ))?;
- #[cfg(any(
- target_arch = "aarch64",
- target_arch = "arm",
- target_arch = "mips",
- target_arch = "mips32r6",
- target_arch = "mips64",
- target_arch = "mips64r6",
- target_arch = "powerpc64",
- target_arch = "riscv64",
- target_arch = "x86"
- ))]
- let pid = ret_c_int(syscall_readonly!(
- __NR_clone,
- c_int(c::SIGCHLD | c::CLONE_CHILD_SETTID),
- zero(),
- zero(),
- zero(),
- &mut child_pid
- ))?;
-
- Ok(if let Some(pid) = Pid::from_raw(pid) {
- Fork::Parent(pid)
- } else {
- Fork::Child(Pid::from_raw_unchecked(child_pid.assume_init()))
- })
-}
-
-#[cfg(feature = "fs")]
-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 {
- use super::*;
- #[cfg(target_arch = "x86")]
- use crate::backend::runtime::tls::UserDesc;
-
- #[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,
- zero(),
- zero(),
- zero()
- ))
- }
-
- #[inline]
- pub(crate) unsafe fn set_tid_address(data: *mut c::c_void) -> Pid {
- let tid: i32 = ret_c_int_infallible(syscall_readonly!(__NR_set_tid_address, data));
- Pid::from_raw_unchecked(tid)
- }
-
- #[inline]
- pub(crate) fn exit_thread(code: c::c_int) -> ! {
- unsafe { syscall_noreturn!(__NR_exit, c_int(code)) }
- }
-}
-
-#[inline]
-pub(crate) unsafe fn sigaction(signal: Signal, new: Option<Sigaction>) -> io::Result<Sigaction> {
- let mut old = MaybeUninit::<Sigaction>::uninit();
- let new = option_as_ptr(new.as_ref());
- ret(syscall!(
- __NR_rt_sigaction,
- signal,
- new,
- &mut old,
- size_of::<kernel_sigset_t, _>()
- ))?;
- Ok(old.assume_init())
-}
-
-#[inline]
-pub(crate) unsafe fn sigaltstack(new: Option<Stack>) -> io::Result<Stack> {
- let mut old = MaybeUninit::<Stack>::uninit();
- let new = option_as_ptr(new.as_ref());
- ret(syscall!(__NR_sigaltstack, new, &mut old))?;
- Ok(old.assume_init())
-}
-
-#[inline]
-pub(crate) unsafe fn tkill(tid: Pid, sig: Signal) -> io::Result<()> {
- ret(syscall_readonly!(__NR_tkill, tid, sig))
-}
-
-#[inline]
-pub(crate) unsafe fn sigprocmask(how: How, new: Option<&Sigset>) -> io::Result<Sigset> {
- let mut old = MaybeUninit::<Sigset>::uninit();
- let new = option_as_ptr(new);
- ret(syscall!(
- __NR_rt_sigprocmask,
- how,
- new,
- &mut old,
- size_of::<kernel_sigset_t, _>()
- ))?;
- Ok(old.assume_init())
-}
-
-#[inline]
-pub(crate) fn sigpending() -> Sigset {
- let mut pending = MaybeUninit::<Sigset>::uninit();
- unsafe {
- ret_infallible(syscall!(
- __NR_rt_sigpending,
- &mut pending,
- size_of::<kernel_sigset_t, _>()
- ));
- pending.assume_init()
- }
-}
-
-#[inline]
-pub(crate) fn sigsuspend(set: &Sigset) -> io::Result<()> {
- unsafe {
- ret(syscall_readonly!(
- __NR_rt_sigsuspend,
- by_ref(set),
- size_of::<kernel_sigset_t, _>()
- ))
- }
-}
-
-#[inline]
-pub(crate) fn sigwait(set: &Sigset) -> io::Result<Signal> {
- unsafe {
- match Signal::from_raw(ret_c_int(syscall_readonly!(
- __NR_rt_sigtimedwait,
- by_ref(set),
- zero(),
- zero(),
- size_of::<kernel_sigset_t, _>()
- ))?) {
- Some(signum) => Ok(signum),
- None => Err(io::Errno::NOTSUP),
- }
- }
-}
-
-#[inline]
-pub(crate) fn sigwaitinfo(set: &Sigset) -> io::Result<Siginfo> {
- let mut info = MaybeUninit::<Siginfo>::uninit();
- unsafe {
- let _signum = ret_c_int(syscall!(
- __NR_rt_sigtimedwait,
- by_ref(set),
- &mut info,
- zero(),
- size_of::<kernel_sigset_t, _>()
- ))?;
- Ok(info.assume_init())
- }
-}
-
-#[inline]
-pub(crate) fn sigtimedwait(set: &Sigset, timeout: Option<Timespec>) -> io::Result<Siginfo> {
- let mut info = MaybeUninit::<Siginfo>::uninit();
- let timeout_ptr = option_as_ptr(timeout.as_ref());
-
- // `rt_sigtimedwait_time64` was introduced in Linux 5.1. The old
- // `rt_sigtimedwait` syscall is not y2038-compatible on 32-bit
- // architectures.
- #[cfg(target_pointer_width = "32")]
- unsafe {
- match ret_c_int(syscall!(
- __NR_rt_sigtimedwait_time64,
- by_ref(set),
- &mut info,
- timeout_ptr,
- size_of::<kernel_sigset_t, _>()
- )) {
- Ok(_signum) => (),
- Err(io::Errno::NOSYS) => sigtimedwait_old(set, timeout, &mut info)?,
- Err(err) => return Err(err),
- }
- Ok(info.assume_init())
- }
-
- #[cfg(target_pointer_width = "64")]
- unsafe {
- let _signum = ret_c_int(syscall!(
- __NR_rt_sigtimedwait,
- by_ref(set),
- &mut info,
- timeout_ptr,
- size_of::<kernel_sigset_t, _>()
- ))?;
- Ok(info.assume_init())
- }
-}
-
-#[cfg(target_pointer_width = "32")]
-unsafe fn sigtimedwait_old(
- set: &Sigset,
- timeout: Option<Timespec>,
- info: &mut MaybeUninit<Siginfo>,
-) -> io::Result<()> {
- let old_timeout = match timeout {
- Some(timeout) => Some(__kernel_old_timespec {
- tv_sec: timeout.tv_sec.try_into().map_err(|_| io::Errno::OVERFLOW)?,
- tv_nsec: timeout.tv_nsec as _,
- }),
- None => None,
- };
-
- let old_timeout_ptr = option_as_ptr(old_timeout.as_ref());
-
- let _signum = ret_c_int(syscall!(
- __NR_rt_sigtimedwait,
- by_ref(set),
- info,
- old_timeout_ptr,
- size_of::<kernel_sigset_t, _>()
- ))?;
-
- Ok(())
-}
-
-#[inline]
-pub(crate) fn exit_group(code: c::c_int) -> ! {
- unsafe { syscall_noreturn!(__NR_exit_group, c_int(code)) }
-}
-
-#[inline]
-pub(crate) unsafe fn brk(addr: *mut c::c_void) -> io::Result<*mut c_void> {
- // This is non-`readonly`, to prevent loads from being reordered past it.
- ret_void_star(syscall!(__NR_brk, addr))
-}