vasilito
8acc73d774
Phase 1 (Runtime Substrate): 4 check binaries, --probe, POSIX tests Phase 2 (Wayland Compositor): bounded scaffold, zero warnings Phase 3 (KWin Session): preflight checker (KWin stub, gated on Qt6Quick) Phase 4 (KDE Plasma): 18 KF6 enabled, preflight checker Phase 5 (Hardware GPU): DRM/firmware/Mesa preflight checker Build: zero warnings, all scripts syntax-clean. Oracle-verified.
57 lines
1.7 KiB
Rust
57 lines
1.7 KiB
Rust
use std::{fs::File, io, os::unix::io::AsRawFd, slice};
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fn from_syscall_error(error: syscall::Error) -> io::Error {
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io::Error::from_raw_os_error(error.errno as i32)
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}
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fn main() -> Result<(), io::Error> {
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let file1 = File::open("shm:example")?;
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let file2 = File::open("shm:example")?;
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let one = unsafe {
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slice::from_raw_parts_mut(
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syscall::fmap(
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file1.as_raw_fd() as usize,
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&syscall::Map {
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offset: 0,
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size: 128,
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flags: syscall::PROT_READ | syscall::PROT_WRITE | syscall::MAP_SHARED,
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address: 0,
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},
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)
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.map_err(from_syscall_error)? as *mut u8,
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128,
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)
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};
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// FIXME: While the length can be unaligned, the offset cannot. This test is incorrectly
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// written.
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let two = unsafe {
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slice::from_raw_parts_mut(
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syscall::fmap(
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file2.as_raw_fd() as usize,
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&syscall::Map {
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offset: 64,
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size: 64,
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flags: syscall::PROT_READ | syscall::PROT_WRITE | syscall::MAP_SHARED,
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address: 0,
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},
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)
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.map_err(from_syscall_error)? as *mut u8,
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64,
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)
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};
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println!("Testing writing between");
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for i in 0..128 {
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one[i as usize] = i;
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}
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for i in 0..64 {
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assert_eq!(two[i as usize], 64 + i);
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}
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println!("Testing fpath");
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let mut buf = [0; 128];
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let len = syscall::fpath(file1.as_raw_fd() as usize, &mut buf).map_err(from_syscall_error)?;
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assert_eq!(&buf[..len], b"shm:example");
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Ok(())
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}
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