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SharedBuffer: Split the creation and share steps

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This allows us to seal a buffer *before* anyone else has access to it
(well, ok, the creating process still does, but you can't win them all).

It also means that a SharedBuffer can be shared with multiple clients:
all you need is to have access to it to share it on again.
This commit is contained in:
Robin Burchell 2019-07-18 09:52:22 +02:00 • committed by Andreas Kling
commit b907608e46
Notes: sideshowbarker 2024-07-19 13:11:27 +09:00
12 changed files with 58 additions and 22 deletions
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3
Kernel/Process.h
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@ -197,7 +197,8 @@ public:
int sys$rename(const char* oldpath, const char* newpath);
int sys$systrace(pid_t);
int sys$mknod(const char* pathname, mode_t, dev_t);
int sys$create_shared_buffer(pid_t peer_pid, int, void** buffer);
int sys$create_shared_buffer(int, void** buffer);
int sys$share_buffer_with(int, pid_t peer_pid);
void* sys$get_shared_buffer(int shared_buffer_id);
int sys$release_shared_buffer(int shared_buffer_id);
int sys$seal_shared_buffer(int shared_buffer_id);