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Kernel/LibC: Implement basic epoll

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This implementation is on top of inodes instead of fds as linux does it.
If I start finding ports/software that relies on epoll allowing
duplicate inodes, I will do what linux does.

I'm probably missing multiple epoll_notify's which may cause hangs but
the system seems to work fine :dd:
This commit is contained in:
Bananymous
2025-05-13 10:10:35 +03:00
parent 143a00626b
commit 1bcd1edbf5
43 changed files with 627 additions and 119 deletions
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4
kernel/kernel/Terminal/TTY.cpp
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@@ -15,6 +15,7 @@
#include <string.h>
#include <stropts.h>
#include <sys/banan-os.h>
#include <sys/epoll.h>
#include <sys/sysmacros.h>
namespace Kernel
@@ -40,6 +41,7 @@ namespace Kernel
bool can_read_impl() const override { return false; }
bool can_write_impl() const override { return false; }
bool has_error_impl() const override { return false; }
bool has_hangup_impl() const override { return false; }
private:
DevTTY(mode_t mode, uid_t uid, gid_t gid)
@@ -238,6 +240,7 @@ namespace Kernel
if (ch == '\x04' && (m_termios.c_lflag & ICANON))
{
m_output.flush = true;
epoll_notify(EPOLLIN);
m_output.thread_blocker.unblock();
return;
}
@@ -280,6 +283,7 @@ namespace Kernel
if (ch == '\n' || !(m_termios.c_lflag & ICANON))
{
m_output.flush = true;
epoll_notify(EPOLLIN);
m_output.thread_blocker.unblock();
}
}