spkg: strlib: Add RtlStrEq() function

Signed-off-by: Chloe M. <chloe@yiffware.org>

service/spkg/head/string.h

@@ -29,4 +29,14 @@ USIZE RtlStrLen(const CHAR *String);
  */
 LONG RtlMemCmp(const VOID *Buffer1, const VOID *Buffer2, USIZE Length);
 
+/*
+ * Check if two strings are equal
+ *
+ * @String1: First string to compare
+ * @String2: Second string to compare
+ *
+ * Returns true if the two strings are equal
+ */
+BOOLEAN RtlStrEq(const CHAR *String1, const CHAR *String2);
+
 #endif  /* !_SPKG_STRING_H_ */

service/spkg/strlib/streq.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2026, Chloe M., et al
+ * Provided under the BSD-3 clause.
+ *
+ * Description:  Check if two strings are equal
+ * Author:       Chloe M.
+ */
+
+#include <ptdef.h>
+#include <string.h>
+
+BOOLEAN
+RtlStrEq(const CHAR *String1, const CHAR *String2)
+{
+    if (String1 == NULL || String2 == NULL) {
+        return false;
+    }
+
+    while (*String1 != '\0' && *String2 != '\0') {
+        if (*String1++ != *String2++) {
+            return false;
+        }
+    }
+
+    if (*String1 != *String2) {
+        return false;
+    }
+
+    return true;
+}