Move the implementation of `Path::exists` to `sys_common::fs` so platforms can specialize it

Windows implementation of `fs::try_exists`

5 files changed, 8 insertions, 3 deletions

diff --git a/library/std/src/sys/hermit/fs.rs b/library/std/src/sys/hermit/fs.rs
index 5b3f2fa4e82..76ea70d997f 100644
--- a/library/std/src/sys/hermit/fs.rs
+++ b/library/std/src/sys/hermit/fs.rs
@@ -12,7 +12,7 @@ use crate::sys::time::SystemTime;
 use crate::sys::unsupported;
 use crate::sys_common::os_str_bytes::OsStrExt;
 
-pub use crate::sys_common::fs::copy;
+pub use crate::sys_common::fs::{copy, try_exists};
 //pub use crate::sys_common::fs::remove_dir_all;
 
 fn cstr(path: &Path) -> io::Result<CString> {
diff --git a/library/std/src/sys/unix/fs.rs b/library/std/src/sys/unix/fs.rs
index 79617aa77b7..ef14865fbcd 100644
--- a/library/std/src/sys/unix/fs.rs
+++ b/library/std/src/sys/unix/fs.rs
@@ -48,7 +48,7 @@ use libc::{
     dirent64, fstat64, ftruncate64, lseek64, lstat64, off64_t, open64, readdir64_r, stat64,
 };
 
-pub use crate::sys_common::fs::remove_dir_all;
+pub use crate::sys_common::fs::{remove_dir_all, try_exists};
 
 pub struct File(FileDesc);
 
diff --git a/library/std/src/sys/unsupported/fs.rs b/library/std/src/sys/unsupported/fs.rs
index cd533761e37..6b45e29c145 100644
--- a/library/std/src/sys/unsupported/fs.rs
+++ b/library/std/src/sys/unsupported/fs.rs
@@ -275,6 +275,10 @@ pub fn remove_dir_all(_path: &Path) -> io::Result<()> {
     unsupported()
 }
 
+pub fn try_exists(_path: &Path) -> io::Result<bool> {
+    unsupported()
+}
+
 pub fn readlink(_p: &Path) -> io::Result<PathBuf> {
     unsupported()
 }
diff --git a/library/std/src/sys/wasi/fs.rs b/library/std/src/sys/wasi/fs.rs
index ed0f03e4b71..45e38f68b8c 100644
--- a/library/std/src/sys/wasi/fs.rs
+++ b/library/std/src/sys/wasi/fs.rs
@@ -14,7 +14,7 @@ use crate::sys::time::SystemTime;
 use crate::sys::unsupported;
 use crate::sys_common::FromInner;
 
-pub use crate::sys_common::fs::remove_dir_all;
+pub use crate::sys_common::fs::{remove_dir_all, try_exists};
 
 pub struct File {
     fd: WasiFd,
diff --git a/library/std/src/sys/windows/fs.rs b/library/std/src/sys/windows/fs.rs
index 8e6bd76f85f..36b395507b1 100644
--- a/library/std/src/sys/windows/fs.rs
+++ b/library/std/src/sys/windows/fs.rs
@@ -11,6 +11,7 @@ use crate::sync::Arc;
 use crate::sys::handle::Handle;
 use crate::sys::time::SystemTime;
 use crate::sys::{c, cvt};
+pub use crate::sys_common::fs::try_exists;
 use crate::sys_common::FromInner;
 
 use super::to_u16s;