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Kernel: Accept SHUT_RD and SHUT_WR as shutdown() how values

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The previous check for valid how values assumed this field was a bitmap
and that SHUT_RDWR was simply a bitwise or of SHUT_RD and SHUT_WR,
which is not the case.
This commit is contained in:
Idan Horowitz 2022-07-09 22:26:58 +03:00 committed by Andreas Kling
parent 693d34fe3d
commit a6f237a247
Notes: sideshowbarker 2024-07-17 18:49:10 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/a6f237a247
Pull-request: https://github.com/SerenityOS/serenity/pull/14533
Reviewed-by: https://github.com/linusg ✅
1 changed files with 1 additions and 1 deletions
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2
Kernel/Syscalls/socket.cpp
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@ -160,7 +160,7 @@ ErrorOr<FlatPtr> Process::sys$shutdown(int sockfd, int how)
{
VERIFY_NO_PROCESS_BIG_LOCK(this)
TRY(require_promise(Pledge::stdio));
if (how & ~SHUT_RDWR)
if (how != SHUT_RD && how != SHUT_WR && how != SHUT_RDWR)
return EINVAL;
auto description = TRY(open_file_description(sockfd));
if (!description->is_socket())