vasilito
b9874d0941
Add redbear-usb-storage-check in-guest binary that validates USB mass storage read and write I/O: discovers /scheme/disk/ devices, writes a test pattern to sector 2048, reads it back, verifies match, restores original content. Updates test-usb-storage-qemu.sh with write-proof verification step. Includes all accumulated Red Bear OS work: kernel patches, relibc patches, driver infrastructure, DRM/GPU, KDE recipes, firmware, validation tooling, build system hardening, and documentation.
64 lines
2.0 KiB
Diff
64 lines
2.0 KiB
Diff
diff --git a/src/header/signal/mod.rs b/src/header/signal/mod.rs
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index f049573..f3d665c 100644
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--- a/src/header/signal/mod.rs
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+++ b/src/header/signal/mod.rs
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@@ -2,7 +2,10 @@
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//!
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//! See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/signal.h.html>.
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-use core::{mem, ptr};
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+use core::{
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+ mem, ptr,
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+ sync::atomic::Ordering,
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+};
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use cbitset::BitSet;
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@@ -32,6 +35,9 @@ pub mod sys;
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#[path = "redox.rs"]
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pub mod sys;
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+mod signalfd;
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+pub use self::signalfd::*;
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+
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type SigSet = BitSet<[u64; 1]>;
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pub(crate) const SIG_DFL: usize = 0;
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@@ -154,10 +160,15 @@ pub extern "C" fn killpg(pgrp: pid_t, sig: c_int) -> c_int {
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/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/pthread_kill.html>.
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#[unsafe(no_mangle)]
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pub unsafe extern "C" fn pthread_kill(thread: pthread_t, sig: c_int) -> c_int {
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- let os_tid = {
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- let pthread = unsafe { &*(thread as *const crate::pthread::Pthread) };
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- unsafe { pthread.os_tid.get().read() }
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- };
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+ let pthread = unsafe { &*(thread as *const crate::pthread::Pthread) };
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+ let os_tid = unsafe { pthread.os_tid.get().read() };
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+ let flags = crate::pthread::PthreadFlags::from_bits_retain(
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+ pthread.flags.load(Ordering::Acquire),
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+ );
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+ if flags.contains(crate::pthread::PthreadFlags::FINISHED) {
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+ return errno::ESRCH;
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+ }
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+
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crate::header::pthread::e(unsafe { Sys::rlct_kill(os_tid, sig as usize) })
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}
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@@ -168,12 +179,10 @@ pub unsafe extern "C" fn pthread_sigmask(
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set: *const sigset_t,
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oldset: *mut sigset_t,
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) -> c_int {
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- // On Linux and Redox, pthread_sigmask and sigprocmask are equivalent
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- if unsafe { sigprocmask(how, set, oldset) } == 0 {
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- 0
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- } else {
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- //TODO: Fix race
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- platform::ERRNO.get()
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+ let filtered_set = unsafe { set.as_ref().map(|&block| block & !RLCT_SIGNAL_MASK) };
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+ match unsafe { Sys::sigprocmask(how, filtered_set.as_ref(), oldset.as_mut()) } {
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+ Ok(()) => 0,
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+ Err(errno) => errno.0,
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}
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}
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