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LibC: Implement tcflush(3)

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This commit is contained in:
Peter Elliott 2020-07-10 22:19:08 -06:00 • committed by Andreas Kling
parent f4ddca0a73
commit 7a27fa3df8
3 changed files with 11 additions and 3 deletions
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8
Kernel/TTY/TTY.cpp
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@ -329,6 +329,14 @@ int TTY::ioctl(FileDescription&, unsigned request, FlatPtr arg)
if (request == TCSETSF)
flush_input();
return 0;
case TCFLSH:
// Serenity's TTY implementation does not use an output buffer, so ignore TCOFLUSH.
if (arg == TCIFLUSH || arg == TCIOFLUSH) {
flush_input();
} else if (arg != TCOFLUSH) {
return -EINVAL;
}
return 0;
case TIOCGWINSZ:
ws = reinterpret_cast<winsize*>(arg);
if (!current_process.validate_write(ws, sizeof(winsize)))