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Commit9da5b55

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Merge pull request#1249 from nicholasbishop/bishop-runtime-mod-time
Add uefi::runtime module
2 parents1fa9408 +233a33a commit9da5b55

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4 files changed

+91
-1
lines changed

4 files changed

+91
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lines changed

‎uefi-test-runner/src/runtime/mod.rs

Lines changed: 31 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,38 @@
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mod vars;
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use uefi::runtime::{self,Daylight,Time,TimeParams};
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use uefi::table::runtime::RuntimeServices;
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pubfntest(rt:&RuntimeServices){
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info!("Testing runtime services");
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vars::test(rt);
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test_time();
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}
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mod vars;
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fntest_time(){
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// Print the current time and time capabilities.
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info!(
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"Time with caps: {:?}",
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runtime::get_time_and_caps().unwrap()
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);
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// Set the time.
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let time =Time::new(TimeParams{
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year:2020,
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month:1,
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day:2,
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hour:3,
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minute:4,
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second:5,
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nanosecond:6,
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time_zone:None,
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daylight:Daylight::ADJUST_DAYLIGHT,
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})
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.unwrap();
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unsafe{ runtime::set_time(&time).unwrap()};
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// Print the new time and check that the year was successfully changed.
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let now = runtime::get_time().unwrap();
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info!("After setting time: {}", now);
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assert_eq!(now.year(),2020);
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}

‎uefi/CHANGELOG.md

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@@ -3,6 +3,8 @@
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##Added
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-`uefi::system` is a new module that provides freestanding functions for
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accessing fields of the global system table.
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-`uefi::runtime` is a new module that provides freestanding functions for
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runtime services using the global system table.
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- Add standard derives for`ConfigTableEntry`.
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-`PcrEvent`/`PcrEventInputs` impl`Align`,`Eq`, and`PartialEq`.
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- Added`PcrEvent::new_in_box` and`PcrEventInputs::new_in_box`.

‎uefi/src/lib.rs

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Original file line numberDiff line numberDiff line change
@@ -119,6 +119,7 @@ pub use uguid::guid;
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mod result;
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pubuse result::{Error,Result,ResultExt,Status,StatusExt};
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pubmod runtime;
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pubmod system;
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pubmod table;
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‎uefi/src/runtime.rs

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,57 @@
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//! UEFI runtime services.
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//!
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//! These services are available both before and after exiting boot
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//! services. Note that various restrictions apply when calling runtime services
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//! functions after exiting boot services; see the "Calling Convention" section
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//! of the UEFI specification for details.
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usecrate::table::{self};
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usecrate::{Result,StatusExt};
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use core::ptr::{self,NonNull};
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pubusecrate::table::runtime::{Daylight,Time,TimeCapabilities,TimeError,TimeParams};
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fnruntime_services_raw_panicking() ->NonNull<uefi_raw::table::runtime::RuntimeServices>{
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let st = table::system_table_raw_panicking();
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// SAFETY: valid per requirements of `set_system_table`.
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let st =unsafe{ st.as_ref()};
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NonNull::new(st.runtime_services).expect("runtime services are not active")
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}
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/// Query the current time and date information.
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pubfnget_time() ->Result<Time>{
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let rt =runtime_services_raw_panicking();
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let rt =unsafe{ rt.as_ref()};
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letmut time =Time::invalid();
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let time_ptr:*mutTime =&mut time;
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unsafe{(rt.get_time)(time_ptr.cast(), ptr::null_mut())}.to_result_with_val(|| time)
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}
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/// Query the current time and date information and the RTC capabilities.
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pubfnget_time_and_caps() ->Result<(Time,TimeCapabilities)>{
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let rt =runtime_services_raw_panicking();
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let rt =unsafe{ rt.as_ref()};
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letmut time =Time::invalid();
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let time_ptr:*mutTime =&mut time;
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letmut caps =TimeCapabilities::default();
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unsafe{(rt.get_time)(time_ptr.cast(),&mut caps)}.to_result_with_val(||(time, caps))
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}
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/// Sets the current local time and date information
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///
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/// During runtime, if a PC-AT CMOS device is present in the platform, the
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/// caller must synchronize access to the device before calling `set_time`.
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///
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/// # Safety
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///
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/// Undefined behavior could happen if multiple tasks try to
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/// use this function at the same time without synchronisation.
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pubunsafefnset_time(time:&Time) ->Result{
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let rt =runtime_services_raw_panicking();
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let rt =unsafe{ rt.as_ref()};
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let time:*constTime = time;
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(rt.set_time)(time.cast()).to_result()
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}

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