Move part of libbase to Rust

native/src/base/xwrap.rs

@@ -0,0 +1,57 @@
+use libc::{c_char, c_uint, mode_t};
+
+use crate::{perror, ptr_to_str};
+
+#[no_mangle]
+pub extern "C" fn xfopen(path: *const c_char, mode: *const c_char) -> *mut libc::FILE {
+    unsafe {
+        let fp = libc::fopen(path, mode);
+        if fp.is_null() {
+            perror!("fopen: {}", ptr_to_str(path));
+        }
+        return fp;
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn xfdopen(fd: i32, mode: *const c_char) -> *mut libc::FILE {
+    unsafe {
+        let fp = libc::fdopen(fd, mode);
+        if fp.is_null() {
+            perror!("fdopen");
+        }
+        return fp;
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn xopen(path: *const c_char, flags: i32, mode: mode_t) -> i32 {
+    unsafe {
+        let r = libc::open(path, flags, mode as c_uint);
+        if r < 0 {
+            perror!("open: {}", ptr_to_str(path));
+        }
+        return r;
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn xopenat(dirfd: i32, path: *const c_char, flags: i32, mode: mode_t) -> i32 {
+    unsafe {
+        let r = libc::openat(dirfd, path, flags, mode as c_uint);
+        if r < 0 {
+            perror!("openat: {}", ptr_to_str(path));
+        }
+        return r;
+    }
+}
+
+#[macro_export]
+macro_rules! xopen {
+    ($path:expr, $flags:expr) => {
+        xopen($path, $flags, 0)
+    };
+    ($path:expr, $flags:expr, $mode:expr) => {
+        xopen($path, $flags, $mode)
+    };
+}