Migration to Edition 2024

native/src/base/cxx_extern.rs

@@ -20,36 +20,42 @@ pub(crate) fn fd_path_for_cxx(fd: RawFd, buf: &mut [u8]) -> isize {
         .map_or(-1_isize, |_| buf.len() as isize)
 }
 
-#[no_mangle]
+#[unsafe(no_mangle)]
 unsafe extern "C" fn canonical_path(path: *const c_char, buf: *mut u8, bufsz: usize) -> isize {
-    match Utf8CStr::from_ptr(path) {
-        Ok(p) => {
-            let mut buf = cstr_buf::wrap_ptr(buf, bufsz);
-            FsPath::from(p)
-                .realpath(&mut buf)
-                .map_or(-1, |_| buf.len() as isize)
+    unsafe {
+        match Utf8CStr::from_ptr(path) {
+            Ok(p) => {
+                let mut buf = cstr_buf::wrap_ptr(buf, bufsz);
+                FsPath::from(p)
+                    .realpath(&mut buf)
+                    .map_or(-1, |_| buf.len() as isize)
+            }
+            Err(_) => -1,
         }
-        Err(_) => -1,
     }
 }
 
-#[export_name = "mkdirs"]
+#[unsafe(export_name = "mkdirs")]
 unsafe extern "C" fn mkdirs_for_cxx(path: *const c_char, mode: mode_t) -> i32 {
-    match Utf8CStr::from_ptr(path) {
-        Ok(p) => FsPath::from(p).mkdirs(mode).map_or(-1, |_| 0),
-        Err(_) => -1,
+    unsafe {
+        match Utf8CStr::from_ptr(path) {
+            Ok(p) => FsPath::from(p).mkdirs(mode).map_or(-1, |_| 0),
+            Err(_) => -1,
+        }
     }
 }
 
-#[export_name = "rm_rf"]
+#[unsafe(export_name = "rm_rf")]
 unsafe extern "C" fn rm_rf_for_cxx(path: *const c_char) -> bool {
-    match Utf8CStr::from_ptr(path) {
-        Ok(p) => FsPath::from(p).remove_all().is_ok(),
-        Err(_) => false,
+    unsafe {
+        match Utf8CStr::from_ptr(path) {
+            Ok(p) => FsPath::from(p).remove_all().is_ok(),
+            Err(_) => false,
+        }
     }
 }
 
-#[no_mangle]
+#[unsafe(no_mangle)]
 unsafe extern "C" fn frm_rf(fd: OwnedFd) -> bool {
     fn inner(fd: OwnedFd) -> io::Result<()> {
         Directory::try_from(fd)?.remove_all()
@@ -83,110 +89,122 @@ pub(crate) unsafe fn readlinkat_for_cxx(
     buf: *mut u8,
     bufsz: usize,
 ) -> isize {
-    // readlinkat() may fail on x86 platform, returning random value
-    // instead of number of bytes placed in buf (length of link)
-    cfg_if! {
-        if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
-            libc::memset(buf.cast(), 0, bufsz);
-            let mut r = libc::readlinkat(dirfd, path, buf.cast(), bufsz - 1);
-            if r > 0 {
-                r = libc::strlen(buf.cast()) as isize;
-            }
-        } else {
-            let r = libc::readlinkat(dirfd, path, buf.cast(), bufsz - 1);
-            if r >= 0 {
-                *buf.offset(r) = b'\0';
+    unsafe {
+        // readlinkat() may fail on x86 platform, returning random value
+        // instead of number of bytes placed in buf (length of link)
+        cfg_if! {
+            if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
+                libc::memset(buf.cast(), 0, bufsz);
+                let mut r = libc::readlinkat(dirfd, path, buf.cast(), bufsz - 1);
+                if r > 0 {
+                    r = libc::strlen(buf.cast()) as isize;
+                }
+            } else {
+                let r = libc::readlinkat(dirfd, path, buf.cast(), bufsz - 1);
+                if r >= 0 {
+                    *buf.offset(r) = b'\0';
+                }
             }
         }
+        r
     }
-    r
 }
 
-#[export_name = "cp_afc"]
+#[unsafe(export_name = "cp_afc")]
 unsafe extern "C" fn cp_afc_for_cxx(src: *const c_char, dest: *const c_char) -> bool {
-    if let Ok(src) = Utf8CStr::from_ptr(src) {
-        if let Ok(dest) = Utf8CStr::from_ptr(dest) {
-            let src = FsPath::from(src);
-            let dest = FsPath::from(dest);
-            return src
-                .copy_to(dest)
-                .log_cxx_with_msg(|w| {
-                    w.write_fmt(format_args!("cp_afc {} -> {} failed", src, dest))
-                })
-                .is_ok();
+    unsafe {
+        if let Ok(src) = Utf8CStr::from_ptr(src) {
+            if let Ok(dest) = Utf8CStr::from_ptr(dest) {
+                let src = FsPath::from(src);
+                let dest = FsPath::from(dest);
+                return src
+                    .copy_to(dest)
+                    .log_cxx_with_msg(|w| {
+                        w.write_fmt(format_args!("cp_afc {} -> {} failed", src, dest))
+                    })
+                    .is_ok();
+            }
         }
+        false
     }
-    false
 }
 
-#[export_name = "mv_path"]
+#[unsafe(export_name = "mv_path")]
 unsafe extern "C" fn mv_path_for_cxx(src: *const c_char, dest: *const c_char) -> bool {
-    if let Ok(src) = Utf8CStr::from_ptr(src) {
-        if let Ok(dest) = Utf8CStr::from_ptr(dest) {
-            let src = FsPath::from(src);
-            let dest = FsPath::from(dest);
-            return src
-                .move_to(dest)
-                .log_cxx_with_msg(|w| {
-                    w.write_fmt(format_args!("mv_path {} -> {} failed", src, dest))
-                })
-                .is_ok();
+    unsafe {
+        if let Ok(src) = Utf8CStr::from_ptr(src) {
+            if let Ok(dest) = Utf8CStr::from_ptr(dest) {
+                let src = FsPath::from(src);
+                let dest = FsPath::from(dest);
+                return src
+                    .move_to(dest)
+                    .log_cxx_with_msg(|w| {
+                        w.write_fmt(format_args!("mv_path {} -> {} failed", src, dest))
+                    })
+                    .is_ok();
+            }
         }
+        false
     }
-    false
 }
 
-#[export_name = "link_path"]
+#[unsafe(export_name = "link_path")]
 unsafe extern "C" fn link_path_for_cxx(src: *const c_char, dest: *const c_char) -> bool {
-    if let Ok(src) = Utf8CStr::from_ptr(src) {
-        if let Ok(dest) = Utf8CStr::from_ptr(dest) {
-            let src = FsPath::from(src);
-            let dest = FsPath::from(dest);
-            return src
-                .link_to(dest)
-                .log_cxx_with_msg(|w| {
-                    w.write_fmt(format_args!("link_path {} -> {} failed", src, dest))
-                })
-                .is_ok();
+    unsafe {
+        if let Ok(src) = Utf8CStr::from_ptr(src) {
+            if let Ok(dest) = Utf8CStr::from_ptr(dest) {
+                let src = FsPath::from(src);
+                let dest = FsPath::from(dest);
+                return src
+                    .link_to(dest)
+                    .log_cxx_with_msg(|w| {
+                        w.write_fmt(format_args!("link_path {} -> {} failed", src, dest))
+                    })
+                    .is_ok();
+            }
         }
+        false
     }
-    false
 }
 
-#[export_name = "clone_attr"]
+#[unsafe(export_name = "clone_attr")]
 unsafe extern "C" fn clone_attr_for_cxx(src: *const c_char, dest: *const c_char) -> bool {
-    if let Ok(src) = Utf8CStr::from_ptr(src) {
-        if let Ok(dest) = Utf8CStr::from_ptr(dest) {
-            let src = FsPath::from(src);
-            let dest = FsPath::from(dest);
-            return clone_attr(src, dest)
-                .log_cxx_with_msg(|w| {
-                    w.write_fmt(format_args!("clone_attr {} -> {} failed", src, dest))
-                })
-                .is_ok();
+    unsafe {
+        if let Ok(src) = Utf8CStr::from_ptr(src) {
+            if let Ok(dest) = Utf8CStr::from_ptr(dest) {
+                let src = FsPath::from(src);
+                let dest = FsPath::from(dest);
+                return clone_attr(src, dest)
+                    .log_cxx_with_msg(|w| {
+                        w.write_fmt(format_args!("clone_attr {} -> {} failed", src, dest))
+                    })
+                    .is_ok();
+            }
         }
+        false
     }
-    false
 }
 
-#[export_name = "fclone_attr"]
+#[unsafe(export_name = "fclone_attr")]
 unsafe extern "C" fn fclone_attr_for_cxx(a: RawFd, b: RawFd) -> bool {
     fclone_attr(a, b)
         .log_cxx_with_msg(|w| w.write_str("fclone_attr failed"))
         .is_ok()
 }
 
-#[export_name = "cxx$utf8str$new"]
+#[unsafe(export_name = "cxx$utf8str$new")]
 unsafe extern "C" fn str_new(this: &mut &Utf8CStr, s: *const u8, len: usize) {
-    *this = Utf8CStr::from_bytes(slice_from_ptr(s, len)).unwrap_or(cstr!(""));
+    unsafe {
+        *this = Utf8CStr::from_bytes(slice_from_ptr(s, len)).unwrap_or(cstr!(""));
+    }
 }
 
-#[export_name = "cxx$utf8str$ptr"]
+#[unsafe(export_name = "cxx$utf8str$ptr")]
 unsafe extern "C" fn str_ptr(this: &&Utf8CStr) -> *const u8 {
     this.as_ptr().cast()
 }
 
-#[export_name = "cxx$utf8str$len"]
+#[unsafe(export_name = "cxx$utf8str$len")]
 unsafe extern "C" fn str_len(this: &&Utf8CStr) -> usize {
     this.len()
 }