Function read [src]

Prototype

pub fn read(r: *std.Io.Reader) ReadError!Header

Parameters

r: *std.Io.Reader

Possible Errors

EndOfStream Error

InvalidElfClass

InvalidElfEndian

InvalidElfMagic

InvalidElfVersion

ReadFailed Error

See the Reader implementation for detailed diagnostics.

Source

  pub fn read(r: *std.Io.Reader) ReadError!Header {
    const buf = try r.peek(@sizeOf(Elf64_Ehdr));

    if (!mem.eql(u8, buf[0..4], MAGIC)) return error.InvalidElfMagic;
    if (buf[EI_VERSION] != 1) return error.InvalidElfVersion;

    const endian: std.builtin.Endian = switch (buf[EI_DATA]) {
        ELFDATA2LSB => .little,
        ELFDATA2MSB => .big,
        else => return error.InvalidElfEndian,
    };

    return switch (buf[EI_CLASS]) {
        ELFCLASS32 => .init(try r.takeStruct(Elf32_Ehdr, endian), endian),
        ELFCLASS64 => .init(try r.takeStruct(Elf64_Ehdr, endian), endian),
        else => return error.InvalidElfClass,
    };
}  