Move all xwrap to Rust

native/src/base/misc.hpp

@@ -6,6 +6,8 @@
 #include <string_view>
 #include <bitset>
 
+#include <base-rs.hpp>
+
 #define DISALLOW_COPY_AND_MOVE(clazz) \
 clazz(const clazz &) = delete; \
 clazz(clazz &&) = delete;
@@ -118,6 +120,11 @@ struct StringCmp {
     bool operator()(std::string_view a, std::string_view b) const { return a < b; }
 };
 
+template<typename T>
+rust::Slice<uint8_t> byte_slice(T *buf, size_t sz) {
+    return rust::Slice(reinterpret_cast<uint8_t *>(buf), sz);
+}
+
 int parse_int(std::string_view s);
 
 using thread_entry = void *(*)(void *);
@@ -160,10 +167,14 @@ std::vector<std::string_view> split_ro(std::string_view, std::string_view delims
 int vssprintf(char *dest, size_t size, const char *fmt, va_list ap);
 // Similar to snprintf, but the return value is the written number of bytes
 int ssprintf(char *dest, size_t size, const char *fmt, ...);
+// This is not actually the strscpy from the Linux kernel.
+// Silently truncates, and returns the number of bytes written.
+extern "C" size_t strscpy(char *dest, const char *src, size_t size);
 
 // Ban usage of unsafe cstring functions
 #define vsnprintf  __use_vssprintf_instead__
 #define snprintf   __use_ssprintf_instead__
+#define strlcpy    __use_strscpy_instead__
 
 struct exec_t {
     bool err = false;