mirror of
https://github.com/vinc/moros.git
synced 2024-06-19 15:37:08 +00:00
d053f17124
* Reorder syscalls * Add DUP syscall * Add api::fs::reopen * Add shell redirections * Use regex to parse arrow * Add tests * Refactor install * Add eprint macro * Change exit code of empty command in shell * Update changelog
118 lines
2.8 KiB
Rust
118 lines
2.8 KiB
Rust
use crate::syscall;
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use crate::sys::syscall::number::*;
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use crate::sys::fs::FileStat;
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pub fn sleep(seconds: f64) {
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unsafe { syscall!(SLEEP, seconds.to_bits()) };
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}
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pub fn uptime() -> f64 {
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let res = unsafe { syscall!(UPTIME) };
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f64::from_bits(res as u64)
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}
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pub fn realtime() -> f64 {
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let res = unsafe { syscall!(REALTIME) };
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f64::from_bits(res as u64)
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}
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pub fn stat(path: &str) -> Option<FileStat> {
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let path_ptr = path.as_ptr() as usize;
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let path_len = path.len() as usize;
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let mut stat = FileStat::new();
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let stat_ptr = &mut stat as *mut FileStat as usize;
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let res = unsafe { syscall!(STAT, path_ptr, path_len, stat_ptr) } as isize;
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if res.is_negative() {
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None
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} else {
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Some(stat)
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}
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}
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pub fn open(path: &str, flags: usize) -> Option<usize> {
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let ptr = path.as_ptr() as usize;
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let len = path.len() as usize;
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let res = unsafe { syscall!(OPEN, ptr, len, flags) } as isize;
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if res.is_negative() {
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None
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} else {
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Some(res as usize)
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}
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}
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pub fn dup(old_handle: usize, new_handle: usize) -> Option<usize> {
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let res = unsafe { syscall!(DUP, old_handle, new_handle) } as isize;
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if res.is_negative() {
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None
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} else {
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Some(res as usize)
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}
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}
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pub fn read(handle: usize, buf: &mut [u8]) -> Option<usize> {
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let ptr = buf.as_ptr() as usize;
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let len = buf.len() as usize;
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let res = unsafe { syscall!(READ, handle, ptr, len) } as isize;
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if res.is_negative() {
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None
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} else {
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Some(res as usize)
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}
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}
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pub fn write(handle: usize, buf: &[u8]) -> Option<usize> {
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let ptr = buf.as_ptr() as usize;
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let len = buf.len() as usize;
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let res = unsafe { syscall!(WRITE, handle, ptr, len) } as isize;
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if res.is_negative() {
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None
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} else {
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Some(res as usize)
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}
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}
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pub fn close(handle: usize) {
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unsafe { syscall!(CLOSE, handle as usize) };
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}
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pub fn spawn(path: &str) {
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let ptr = path.as_ptr() as usize;
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let len = path.len() as usize;
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unsafe { syscall!(SPAWN, ptr, len) };
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}
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#[test_case]
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fn test_file() {
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use crate::sys::fs::{mount_mem, format_mem, dismount, OpenFlag};
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use alloc::vec;
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mount_mem();
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format_mem();
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let flags = 0;
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assert_eq!(open("/test", flags), None);
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// Write file
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let flags = OpenFlag::Create as usize;
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assert_eq!(open("/test", flags), Some(4));
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let input = "Hello, world!".as_bytes();
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assert_eq!(write(4, &input), Some(input.len()));
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// Read file
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let flags = 0;
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assert_eq!(open("/test", flags), Some(5));
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let mut output = vec![0; input.len()];
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assert_eq!(read(5, &mut output), Some(input.len()));
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assert_eq!(output, input);
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close(4);
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close(5);
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assert_eq!(open("/test", flags), Some(4));
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close(4);
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//assert!(write(1, b"Hello, World\n").is_some());
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dismount();
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}
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