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Kernel: Hack non-blocking support for sockets 

This is not thread safe and can still block if two programs refering to
the same socket try to read data at the same time
This commit is contained in:
Bananymous 2024-08-22 14:15:15 +03:00
parent 72f3fe0b12
commit 63b616dc2e
1 changed files with 8 additions and 1 deletions
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9
kernel/kernel/Process.cpp
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@ -1154,7 +1154,6 @@ namespace Kernel
return 0;
}
dprintln("SYS_GETSOCKOPT {}, {}, {}, {}, {}", socket, level, option_name, option_value, option_len);
return BAN::Error::from_errno(ENOTSUP);
}
@ -1243,6 +1242,10 @@ namespace Kernel
if (!inode->mode().ifsock())
return BAN::Error::from_errno(ENOTSOCK);
auto flags = TRY(m_open_file_descriptors.flags_of(arguments->socket));
if ((flags & O_NONBLOCK) && !inode->can_write())
return BAN::Error::from_errno(EAGAIN);
BAN::ConstByteSpan message { reinterpret_cast<const uint8_t*>(arguments->message), arguments->length };
return TRY(inode->sendto(message, arguments->dest_addr, arguments->dest_len));
}
@ -1267,6 +1270,10 @@ namespace Kernel
if (!inode->mode().ifsock())
return BAN::Error::from_errno(ENOTSOCK);
auto flags = TRY(m_open_file_descriptors.flags_of(arguments->socket));
if ((flags & O_NONBLOCK) && !inode->can_read())
return BAN::Error::from_errno(EAGAIN);
BAN::ByteSpan buffer { reinterpret_cast<uint8_t*>(arguments->buffer), arguments->length };
return TRY(inode->recvfrom(buffer, arguments->address, arguments->address_len));
}