RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 04:48:14 +00:00
Code Issues Activity Actions

Kernel: Make UserOrKernelBuffer R/W helpers return KResultOr<size_t>

Browse source 
This makes error propagation less cumbersome (and also exposed some
places where we were not doing it.)
This commit is contained in:
Andreas Kling 2021-05-13 09:08:44 +02:00
parent 25a45e639a
commit e46343bf9a
15 changed files with 64 additions and 85 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Kernel/FileSystem/InodeWatcher.cpp
View file

@ -48,7 +48,7 @@ KResultOr<size_t> InodeWatcher::read(FileDescription&, u64, UserOrKernelBuffer&
if (buffer_size < bytes_to_write)
return EINVAL;
ssize_t nwritten = buffer.write_buffered<MAXIMUM_EVENT_SIZE>(bytes_to_write, [&](u8* data, size_t data_bytes) {
auto result = buffer.write_buffered<MAXIMUM_EVENT_SIZE>(bytes_to_write, [&](u8* data, size_t data_bytes) {
size_t offset = 0;
memcpy(data + offset, &event.wd, sizeof(InodeWatcherEvent::watch_descriptor));
@ -64,12 +64,10 @@ KResultOr<size_t> InodeWatcher::read(FileDescription&, u64, UserOrKernelBuffer&
memset(data + offset, 0, sizeof(InodeWatcherEvent::name_length));
}
return (ssize_t)data_bytes;
return data_bytes;
});
if (nwritten < 0)
return KResult((ErrnoCode)-nwritten);
evaluate_block_conditions();
return bytes_to_write;
return result;
}
KResult InodeWatcher::close()