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//! ls — list directory contents via the exports table.
//!
//! Args: [path] — defaults to "." (root).
#![no_std]
#![no_main]
#[panic_handler]
fn panic(_info: &core::panic::PanicInfo) -> ! {
loop { core::hint::spin_loop(); }
}
fn put(exports: &rsapi::Exports, buf: &[u8]) {
(exports.put_line)(rsapi::Line { ptr: buf.as_ptr(), len: buf.len() });
}
#[unsafe(no_mangle)]
pub extern "C" fn efi_main(exports: &'static rsapi::Exports, argc: usize, argv: *const rsapi::Arg) -> i32 {
// C-style argv: argv[0] is the program name, user args start at 1.
let path_str = if argc > 1 {
let a = unsafe { &*argv.add(1) };
unsafe { core::str::from_utf8_unchecked(core::slice::from_raw_parts(a.ptr, a.len)) }
} else {
"/"
};
let h = (exports.fs_resolve)(rsapi::Line { ptr: path_str.as_ptr(), len: path_str.len() });
if h < 0 { return 1; }
let mut entry = rsapi::DirEntry {
name: rsapi::Line { ptr: core::ptr::null(), len: 0 },
is_dir: false,
_pad: 0,
size: 0,
};
while (exports.fs_dir_next)(h, &mut entry) {
let name = unsafe { core::str::from_utf8_unchecked(core::slice::from_raw_parts(entry.name.ptr, entry.name.len)) };
if entry.is_dir {
let mut buf = [0u8; 64];
let nb = name.as_bytes();
buf[..nb.len()].copy_from_slice(nb);
buf[nb.len()] = b'/';
put(exports, &buf[..nb.len() + 1]);
} else {
put(exports, name.as_bytes());
}
}
(exports.fs_close)(h);
0
}
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