vasilito
50b731f1b7
Derivative of Redox OS (https://www.redox-os.org) adding: - AMD GPU driver (amdgpu) via LinuxKPI compat layer - ext4 filesystem support (ext4d scheme daemon) - ACPI fixes for AMD bare metal (x2APIC, DMAR, IVRS, MCFG) - Custom branding (hostname, os-release, boot identity) Build system is full upstream Redox with RBOS overlay in local/. Patches for kernel, base, and relibc are symlinked from local/patches/ and protected from make clean/distclean. Custom recipes live in local/recipes/ with symlinks into the recipes/ search path. Build: make all CONFIG_NAME=redbear-full Sync: ./local/scripts/sync-upstream.sh
119 lines
3.6 KiB
Diff
119 lines
3.6 KiB
Diff
diff --git a/src/header/mod.rs b/src/header/mod.rs
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--- a/src/header/mod.rs
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+++ b/src/header/mod.rs
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@@ -100,5 +100,6 @@ pub mod sys_socket;
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pub mod sys_stat;
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pub mod sys_statvfs;
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pub mod sys_time;
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+pub mod sys_timerfd;
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#[deprecated]
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pub mod sys_timeb;
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diff --git a/src/header/sys_timerfd/cbindgen.toml b/src/header/sys_timerfd/cbindgen.toml
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new file mode 100644
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--- /dev/null
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+++ b/src/header/sys_timerfd/cbindgen.toml
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@@ -0,0 +1,9 @@
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+sys_includes = ["time.h"]
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+include_guard = "_SYS_TIMERFD_H"
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+language = "C"
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+style = "Tag"
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+no_includes = true
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+cpp_compat = true
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+
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+[enum]
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+prefix_with_name = true
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diff --git a/src/header/sys_timerfd/mod.rs b/src/header/sys_timerfd/mod.rs
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new file mode 100644
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--- /dev/null
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+++ b/src/header/sys_timerfd/mod.rs
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@@ -0,0 +1,89 @@
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+//! `sys/timerfd.h` implementation.
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+//!
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+//! Non-POSIX, see <https://man7.org/linux/man-pages/man2/timerfd_create.2.html>.
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+
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+use alloc::format;
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+use core::{mem, slice};
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+
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+use crate::{
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+ c_str::{CStr, CString},
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+ error::{Errno, ResultExt},
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+ header::{
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+ bits_timespec::timespec,
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+ errno::{EFAULT, EINVAL, EIO},
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+ fcntl::{O_CLOEXEC, O_NONBLOCK, O_RDWR},
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+ },
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+ platform::{
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+ Pal, Sys,
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+ types::{c_int, clockid_t},
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+ },
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+};
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+
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+pub use crate::header::time::itimerspec;
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+
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+pub const TFD_CLOEXEC: c_int = 0x80000;
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+pub const TFD_NONBLOCK: c_int = 0x800;
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+pub const TFD_TIMER_ABSTIME: c_int = 0x1;
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+
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+fn read_exact(fd: c_int, buf: &mut [u8]) -> Result<(), Errno> {
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+ match Sys::read(fd, buf)? {
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+ n if n == buf.len() => Ok(()),
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+ _ => Err(Errno(EIO)),
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+ }
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+}
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+
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+fn write_exact(fd: c_int, buf: &[u8]) -> Result<(), Errno> {
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+ match Sys::write(fd, buf)? {
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+ n if n == buf.len() => Ok(()),
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+ _ => Err(Errno(EIO)),
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+ }
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+}
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+
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+#[unsafe(no_mangle)]
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+pub extern "C" fn timerfd_create(clockid: clockid_t, flags: c_int) -> c_int {
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+ let supported = TFD_CLOEXEC | TFD_NONBLOCK;
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+ if flags & !supported != 0 {
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+ return Err::<c_int, _>(Errno(EINVAL)).or_minus_one_errno();
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+ }
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+
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+ let mut oflag = O_RDWR;
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+ if flags & TFD_CLOEXEC == TFD_CLOEXEC {
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+ oflag |= O_CLOEXEC;
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+ }
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+ if flags & TFD_NONBLOCK == TFD_NONBLOCK {
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+ oflag |= O_NONBLOCK;
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+ }
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+
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+ let path = match CString::new(format!("/scheme/time/{clockid}")) {
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+ Ok(path) => path,
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+ Err(_) => return Err::<c_int, _>(Errno(EINVAL)).or_minus_one_errno(),
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+ };
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+ Sys::open(CStr::borrow(&path), oflag, 0).or_minus_one_errno()
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+}
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+
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+#[unsafe(no_mangle)]
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+pub unsafe extern "C" fn timerfd_settime(fd: c_int, flags: c_int, new: *const itimerspec, old: *mut itimerspec) -> c_int {
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+ if flags & !TFD_TIMER_ABSTIME != 0 {
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+ return Err::<c_int, _>(Errno(EINVAL)).or_minus_one_errno();
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+ }
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+ if new.is_null() {
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+ return Err::<c_int, _>(Errno(EFAULT)).or_minus_one_errno();
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+ }
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+ if !old.is_null() && unsafe { timerfd_gettime(fd, old) } < 0 {
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+ return -1;
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+ }
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+ let spec = unsafe { &*new };
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+ let buf = unsafe { slice::from_raw_parts((&raw const spec.it_value).cast::<u8>(), mem::size_of::<timespec>()) };
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+ write_exact(fd, buf).map(|()| 0).or_minus_one_errno()
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+}
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+
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+#[unsafe(no_mangle)]
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+pub unsafe extern "C" fn timerfd_gettime(fd: c_int, curr: *mut itimerspec) -> c_int {
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+ if curr.is_null() {
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+ return Err::<c_int, _>(Errno(EFAULT)).or_minus_one_errno();
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+ }
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+ let curr = unsafe { &mut *curr };
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+ curr.it_interval = timespec::default();
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+ let buf = unsafe { slice::from_raw_parts_mut((&raw mut curr.it_value).cast::<u8>(), mem::size_of::<timespec>()) };
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+ read_exact(fd, buf).map(|()| 0).or_minus_one_errno()
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+}
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