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Kernel: Make sys$recvfrom() with MSG_DONTWAIT not so racy

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Instead of temporary changing the open file description's "blocking"
flag while doing a non-waiting recvfrom, we instead plumb the currently
wanted blocking behavior all the way through to the underlying socket.
This commit is contained in:
Andreas Kling 2022-08-21 16:45:42 +02:00
parent 8997c6a4d1
commit 42435ce5e4
7 changed files with 17 additions and 22 deletions
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2
Kernel/Net/Socket.h
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@ -80,7 +80,7 @@ public:
virtual bool is_local() const { return false; }
virtual bool is_ipv4() const { return false; }
virtual ErrorOr<size_t> sendto(OpenFileDescription&, UserOrKernelBuffer const&, size_t, int flags, Userspace<sockaddr const*>, socklen_t) = 0;
virtual ErrorOr<size_t> recvfrom(OpenFileDescription&, UserOrKernelBuffer&, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>, Time&) = 0;
virtual ErrorOr<size_t> recvfrom(OpenFileDescription&, UserOrKernelBuffer&, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>, Time&, bool blocking) = 0;
virtual ErrorOr<void> setsockopt(int level, int option, Userspace<void const*>, socklen_t);
virtual ErrorOr<void> getsockopt(OpenFileDescription&, int level, int option, Userspace<void*>, Userspace<socklen_t*>);