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AK: Disallow returning of string literals for errors in kernel code

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This code should not be used in the kernel - we should always propagate
proper errno codes in case we need to return those to userland so it
could decode it in a reasonable way.
This commit is contained in:
Liav A 2023-02-04 14:18:36 +02:00 • committed by Linus Groh
parent 56b799c556
commit 048fb2c204
5 changed files with 51 additions and 20 deletions
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6
AK/Hex.cpp
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@ -15,18 +15,18 @@ namespace AK {
ErrorOr<ByteBuffer> decode_hex(StringView input)
{
if ((input.length() % 2) != 0)
return Error::from_string_literal("Hex string was not an even length");
return Error::from_string_view_or_print_error_and_return_errno("Hex string was not an even length"sv, EINVAL);
auto output = TRY(ByteBuffer::create_zeroed(input.length() / 2));
for (size_t i = 0; i < input.length() / 2; ++i) {
auto const c1 = decode_hex_digit(input[i * 2]);
if (c1 >= 16)
return Error::from_string_literal("Hex string contains invalid digit");
return Error::from_string_view_or_print_error_and_return_errno("Hex string contains invalid digit"sv, EINVAL);
auto const c2 = decode_hex_digit(input[i * 2 + 1]);
if (c2 >= 16)
return Error::from_string_literal("Hex string contains invalid digit");
return Error::from_string_view_or_print_error_and_return_errno("Hex string contains invalid digit"sv, EINVAL);
output[i] = (c1 << 4) + c2;
}