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Allow character devices to block write attempts until there is more space.

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This commit is contained in:
Andreas Kling 2019-01-15 09:17:22 +01:00
parent 49b63281a0
commit e452303c66
21 changed files with 39 additions and 7 deletions
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4
VirtualFileSystem/FileDescriptor.cpp
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@ -165,12 +165,14 @@ ssize_t FileDescriptor::write(const byte* data, size_t size)
return -1;
}
bool FileDescriptor::can_write()
bool FileDescriptor::can_write(Process& process)
{
if (is_fifo()) {
ASSERT(fifo_direction() == FIFO::Writer);
return m_fifo->can_write();
}
if (m_vnode->isCharacterDevice())
return m_vnode->characterDevice()->can_write(process);
return true;
}