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Kernel: Change Inode::{read/write}_bytes interface to KResultOr<ssize_t>

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The error handling in all these cases was still using the old style
negative values to indicate errors. We have a nicer solution for this
now with KResultOr<T>. This change switches the interface and then all
implementers to use the new style.
This commit is contained in:
Brian Gianforcaro 2021-05-01 14:29:39 -07:00 • committed by Andreas Kling
parent de9b454f89
commit 234c6ae32d
18 changed files with 88 additions and 82 deletions
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7
Kernel/FileSystem/Inode.cpp
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@ -60,9 +60,10 @@ KResultOr<NonnullOwnPtr<KBuffer>> Inode::read_entire(FileDescription* descriptio
off_t offset = 0;
for (;;) {
auto buf = UserOrKernelBuffer::for_kernel_buffer(buffer);
nread = read_bytes(offset, sizeof(buffer), buf, description);
if (nread < 0)
return KResult((ErrnoCode)-nread);
auto result = read_bytes(offset, sizeof(buffer), buf, description);
if (result.is_error())
return result.error();
nread = result.value();
VERIFY(nread <= (ssize_t)sizeof(buffer));
if (nread <= 0)
break;