std: fs: uefi: Implement canonicalize

Ayush1325 · Ayush1325 · commit 526a6895f9fb · 2025-03-18T18:09:22.000+05:30
- Should be same as absolute in UEFI since there are no symlinks.
- Also each absolute path representation should be unique according to
  the UEFI specification.

Signed-off-by: Ayush Singh &lt;ayush@beagleboard.org&gt;
diff --git a/library/std/src/sys/fs/uefi.rs b/library/std/src/sys/fs/uefi.rs
@@ -315,8 +315,8 @@ pub fn lstat(_p: &Path) -> io::Result<FileAttr> {
     unsupported()
 }
 
-pub fn canonicalize(_p: &Path) -> io::Result<PathBuf> {
-    unsupported()
+pub fn canonicalize(p: &Path) -> io::Result<PathBuf> {
+    crate::path::absolute(p)
 }
 
 pub fn copy(_from: &Path, _to: &Path) -> io::Result<u64> {

Original file line number	Diff line number	Diff line change
`@@ -315,8 +315,8 @@ pub fn lstat(_p: &Path) -> io::Result<FileAttr> {`
`315`	`315`	`unsupported()`
`316`	`316`	`}`
`317`	`317`
`318`		`-pub fn canonicalize(_p: &Path) -> io::Result<PathBuf> {`
`319`		`- unsupported()`
	`318`	`+pub fn canonicalize(p: &Path) -> io::Result<PathBuf> {`
	`319`	`+ crate::path::absolute(p)`
`320`	`320`	`}`
`321`	`321`
`322`	`322`	`pub fn copy(_from: &Path, _to: &Path) -> io::Result<u64> {`