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Kernel: Check can_write for blocking write

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This way the socket write buffer sizes are respected, and things that
exceed them get sent EAGAIN.
This commit is contained in:
Robin Burchell 2019-05-19 10:25:05 +02:00 • committed by Andreas Kling
parent 635eb20289
commit d8b74c8c86
1 changed files with 4 additions and 2 deletions
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6
Kernel/Process.cpp
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@ -853,8 +853,10 @@ ssize_t Process::sys$writev(int fd, const struct iovec* iov, int iov_count)
ssize_t Process::do_write(FileDescriptor& descriptor, const byte* data, int data_size)
{
ssize_t nwritten = 0;
if (!descriptor.is_blocking())
return descriptor.write(data, data_size);
if (!descriptor.is_blocking()) {
if (!descriptor.can_write())
return -EAGAIN;
}
while (nwritten < data_size) {
#ifdef IO_DEBUG