mirror of https://github.com/vinc/moros.git
142 lines
3.4 KiB
Rust
142 lines
3.4 KiB
Rust
use crate::syscall;
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use crate::sys::syscall::number::*;
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use crate::sys::fs::FileInfo;
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pub fn exit(code: usize) -> usize {
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unsafe { syscall!(EXIT, code as u64) }
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}
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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 delete(path: &str) -> Result<(), ()> {
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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 res = unsafe { syscall!(DELETE, path_ptr, path_len) } as isize;
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if res.is_negative() {
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Err(())
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} else {
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Ok(())
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}
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}
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pub fn info(path: &str) -> Option<FileInfo> {
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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 info = FileInfo::new();
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let stat_ptr = &mut info as *mut FileInfo as usize;
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let res = unsafe { syscall!(INFO, 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(info)
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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, args: &[&str]) -> Result<(), ()> {
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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 args_ptr = args.as_ptr() as usize;
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let args_len = args.len() as usize;
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let res = unsafe { syscall!(SPAWN, path_ptr, path_len, args_ptr, args_len) } as isize;
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if res.is_negative() {
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Err(())
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} else {
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Ok(())
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}
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}
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pub fn stop(code: usize) {
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unsafe { syscall!(STOP, code) };
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}
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pub fn reboot() {
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stop(0xcafe);
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}
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pub fn halt() {
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stop(0xdead);
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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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