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Kernel: Plumb KResult through FileDescription::read_entire_file() implementation.

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Allow file system implementation to return meaningful error codes to
callers of the FileDescription::read_entire_file(). This allows both
Process::sys$readlink() and Process::sys$module_load() to return more
detailed errors to the user.
This commit is contained in:
Brian Gianforcaro 2020-05-26 00:36:11 -07:00 • committed by Andreas Kling
parent c459e4ecb2
commit 6a74af8063
14 changed files with 54 additions and 36 deletions
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6
Kernel/FileSystem/TmpFS.cpp
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@ -166,19 +166,19 @@ InodeMetadata TmpFSInode::metadata() const
return m_metadata;
}
bool TmpFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)> callback) const
KResult TmpFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)> callback) const
{
LOCKER(m_lock, Lock::Mode::Shared);
if (!is_directory())
return false;
return KResult(-ENOTDIR);
callback({ ".", identifier(), 0 });
callback({ "..", m_parent, 0 });
for (auto& it : m_children)
callback(it.value.entry);
return true;
return KSuccess;
}
ssize_t TmpFSInode::read_bytes(off_t offset, ssize_t size, u8* buffer, FileDescription*) const