chore(sections): return Error as Err

src/error.rs

@@ -58,6 +58,8 @@ pub enum Error {
     ValueNotContained,
     /// The dynamic link information does not contain a pointer, but a value.
     PointerNotContained,
+    /// 32-bit binaries are not supported.
+    Binary32BitNotSupported,
 }
 
 impl fmt::Display for Error {
@@ -91,6 +93,7 @@ impl fmt::Display for Error {
                 Self::DecompressionError => "Failed to decompress the section.",
                 Self::ValueNotContained => "The dynamic link information does not contain a value, but a pointer.",
                 Self::PointerNotContained => "The dynamic link information does not contain a pointer, but a value.",
+                Self::Binary32BitNotSupported => "The 32-bit binaries are not supported.",
             }
         )
     }

src/sections.rs

@@ -151,13 +151,13 @@ impl<'a> SectionHeader<'a> {
             ShType::Note => {
                 let data = self.raw_data(elf_file);
                 match elf_file.header.pt1.class() {
-                    Class::ThirtyTwo => return Err("32-bit binaries not implemented"),
+                    Class::ThirtyTwo => return Err(Error::Binary32BitNotSupported),
                     Class::SixtyFour => {
                         let header: &'a NoteHeader = read(&data[0..12]);
                         let index = &data[12..];
                         SectionData::Note64(header, index)
                     }
-                    Class::None | Class::Other(_) => return Err("Unknown ELF class"),
+                    Class::None | Class::Other(_) => return Err(Error::InvalidClass),
                 }
             }
             ShType::Hash => {