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TTY: MasterPTY should fail to ioctl() if slave is gone

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Just fail with EIO in that case.
This commit is contained in:
Andreas Kling 2019-10-24 21:03:49 +02:00
parent bced810880
commit 5c3647b8a3
1 changed files with 2 additions and 0 deletions
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2
Kernel/TTY/MasterPTY.cpp
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@ -98,6 +98,8 @@ void MasterPTY::close()
int MasterPTY::ioctl(FileDescription& description, unsigned request, unsigned arg) int MasterPTY::ioctl(FileDescription& description, unsigned request, unsigned arg)
{ {
if (!m_slave)
return -EIO;
if (request == TIOCSWINSZ || request == TIOCGPGRP) if (request == TIOCSWINSZ || request == TIOCGPGRP)
return m_slave->ioctl(description, request, arg); return m_slave->ioctl(description, request, arg);
return -EINVAL; return -EINVAL;