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Commit ce533e7

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fs: add high-level file system abstraction
1 parent 4db6d17 commit ce533e7

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13 files changed

+899
-18
lines changed

13 files changed

+899
-18
lines changed

‎Cargo.lock

Lines changed: 35 additions & 0 deletions
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‎uefi-test-runner/src/fs/mod.rs

Lines changed: 54 additions & 0 deletions
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@@ -0,0 +1,54 @@
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//! Tests functionality from the `uefi::fs` module. See function [`test`].
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use alloc::string::{String, ToString};
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use alloc::vec::Vec;
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use uefi::fs::{FileSystem, FileSystemError};
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use uefi::proto::media::fs::SimpleFileSystem;
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use uefi::table::boot::ScopedProtocol;
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/// Tests functionality from the `uefi::fs` module. This test relies on a
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/// working File System Protocol, which is tested at a dedicated place.
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pub fn test(sfs: ScopedProtocol<SimpleFileSystem>) {
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let mut fs = FileSystem::new(sfs);
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fs.create_dir("test_file_system_abs").unwrap();
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// slash is transparently transformed to backslash
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fs.write("test_file_system_abs/foo", "hello").unwrap();
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// absolute or relative paths are supported; ./ is ignored
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fs.copy("\\test_file_system_abs/foo", "\\test_file_system_abs/./bar")
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.unwrap();
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let read = fs.read("\\test_file_system_abs\\bar").unwrap();
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let read = String::from_utf8(read).unwrap();
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assert_eq!(read, "hello");
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assert_eq!(
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fs.try_exists("test_file_system_abs\\barfoo"),
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Err(FileSystemError::OpenError(
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"\\test_file_system_abs\\barfoo".to_string()
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))
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);
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fs.rename("test_file_system_abs\\bar", "test_file_system_abs\\barfoo")
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.unwrap();
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assert!(fs.try_exists("test_file_system_abs\\barfoo").is_ok());
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let entries = fs
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.read_dir("test_file_system_abs")
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.unwrap()
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.map(|e| e.unwrap().file_name().to_string())
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.collect::<Vec<_>>();
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assert_eq!(&[".", "..", "foo", "barfoo"], entries.as_slice());
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/*fs.create_dir("/deeply_nested_test").unwrap();
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fs.create_dir("/deeply_nested_test/1").unwrap();
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fs.create_dir("/deeply_nested_test/1/2").unwrap();
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fs.create_dir("/deeply_nested_test/1/2/3").unwrap();
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fs.create_dir("/deeply_nested_test/1/2/3/4").unwrap();*/
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fs.create_dir_all("/deeply_nested_test/1/2/3/4/5/6/7")
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.unwrap();
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fs.try_exists("/deeply_nested_test/1/2/3/4/5/6/7").unwrap();
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//fs.remove_dir_all("/deeply_nested_test/1/2/3/4/5/6/7").unwrap();
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fs.remove_dir("/deeply_nested_test/1/2/3/4/5/6/7").unwrap();
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let x = fs.try_exists("/deeply_nested_test/1/2/3/4/5/6/7");
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assert!(x.is_err());
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}

‎uefi-test-runner/src/main.rs

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -13,6 +13,7 @@ use uefi::Result;
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use uefi_services::{print, println};
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mod boot;
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mod fs;
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mod proto;
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mod runtime;
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‎uefi-test-runner/src/proto/media.rs

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -433,8 +433,12 @@ pub fn test(bt: &BootServices) {
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test_partition_info(bt, handle);
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}
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// Close the `SimpleFileSystem` protocol so that the raw disk tests work.
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drop(sfs);
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// Invoke the fs test after the basic low-level file system protocol
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// tests succeeded.
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// This will also drop the `SimpleFileSystem` protocol so that the raw disk
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// tests work.
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crate::fs::test(sfs);
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test_raw_disk_io(handle, bt);
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test_raw_disk_io2(handle, bt);

‎uefi/Cargo.toml

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Original file line numberDiff line numberDiff line change
@@ -25,6 +25,7 @@ unstable = []
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[dependencies]
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bitflags = "1.3.1"
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derive_more = { version = "0.99.17", features = ["display"] }
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log = { version = "0.4.5", default-features = false }
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ptr_meta = { version = "0.2.0", default-features = false }
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ucs2 = "0.3.2"

‎uefi/src/fs/dir_entry_iter.rs

Lines changed: 31 additions & 0 deletions
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//! Module for directory iteration. See [`UefiDirectoryIter`].
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use super::*;
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use alloc::boxed::Box;
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use uefi::Result;
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/// Iterates over the entries of an UEFI directory. It returns boxed values of
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/// type [`UefiFileInfo`].
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#[derive(Debug)]
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pub struct UefiDirectoryIter(UefiDirectoryHandle);
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impl UefiDirectoryIter {
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/// Constructor.
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pub fn new(handle: UefiDirectoryHandle) -> Self {
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Self(handle)
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}
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}
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impl Iterator for UefiDirectoryIter {
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type Item = Result<Box<UefiFileInfo>, ()>;
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fn next(&mut self) -> Option<Self::Item> {
23+
let e = self.0.read_entry_boxed();
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match e {
25+
// no more entries
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Ok(None) => None,
27+
Ok(Some(e)) => Some(Ok(e)),
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Err(e) => Some(Err(e)),
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}
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}
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}

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