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Kernel: Closing a file descriptor should not always close the file

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When there is more than one file descriptor for a file closing
one of them should not close the underlying file.

Previously this relied on the file's ref_count() but at least
for sockets this didn't work reliably.
This commit is contained in:
Gunnar Beutner 2021-04-30 10:33:33 +02:00 • committed by Andreas Kling
commit 7a1d09ef1a
Notes: sideshowbarker 2024-07-18 18:52:44 +09:00
3 changed files with 17 additions and 3 deletions
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11
Kernel/FileSystem/File.cpp
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@ -43,4 +43,15 @@ KResultOr<Region*> File::mmap(Process&, FileDescription&, const Range&, u64, int
return ENODEV;
}
KResult File::attach(FileDescription&)
{
m_attach_count++;
return KSuccess;
}
void File::detach(FileDescription&)
{
m_attach_count--;
}
}