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LibIPC: Support sending file descriptors :^)

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It is now possible to use the special IPC::File type in message arguments. In
C++, the type is nothing more than a wrapper over a file descriptor. But when
serializing/deserializing IPC::File arguments, LibIPC will use the sendfd/recvfd
kernel APIs instead of sending the integer inline.

This makes it quite convenient to pass files over IPC, and will allow us to
significantly tighten sandboxes in the future :^)

Closes https://github.com/SerenityOS/serenity/issues/3643
This commit is contained in:
Sergey Bugaev 2020-11-21 21:59:12 +03:00 • committed by Andreas Kling
commit 23dc3ff0c2
Notes: sideshowbarker 2024-07-19 01:17:44 +09:00
9 changed files with 148 additions and 50 deletions
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1
Libraries/LibIPC/Encoder.h
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@ -61,6 +61,7 @@ public:
Encoder& operator<<(const ByteBuffer&);
Encoder& operator<<(const URL&);
Encoder& operator<<(const Dictionary&);
Encoder& operator<<(const File&);
template<typename K, typename V>
Encoder& operator<<(const HashMap<K, V>& hashmap)
{