From 98e11f18b40af3c684db47613b0afdb15c6eabbc Mon Sep 17 00:00:00 2001
From: Miles Bader <miles@gnu.org>
Date: Wed, 2 Oct 1996 15:59:20 +0000
Subject: (S_tioctl_tiocsig, S_tioctl_tiocucntl, S_tioctl_tiocpkt): Hold
GLOBAL_LOCK while frobbing (especially around send_signal).
---
term/ptyio.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
(limited to 'term')
diff --git a/term/ptyio.c b/term/ptyio.c
index 22c46407..16f5d08b 100644
--- a/term/ptyio.c
+++ b/term/ptyio.c
@@ -464,12 +464,17 @@ S_tioctl_tiocsig (io_t port,
if (!cred)
return EOPNOTSUPP;
+ mutex_lock (&global_lock);
+
drop_output ();
clear_queue (inputq);
clear_queue (rawq);
ptyio_notice_input_flushed ();
send_signal (sig);
+
+ mutex_unlock (&global_lock);
ports_port_deref (cred);
+
return 0;
}
@@ -484,6 +489,8 @@ S_tioctl_tiocpkt (io_t port,
if (!cred)
return EOPNOTSUPP;
+ mutex_lock (&global_lock);
+
if (!!mode == !!packet_mode)
err = 0;
else if (mode && user_ioctl_mode)
@@ -494,7 +501,10 @@ S_tioctl_tiocpkt (io_t port,
control_byte = 0;
err = 0;
}
+
+ mutex_unlock (&global_lock);
ports_port_deref (cred);
+
return err;
}
@@ -509,6 +519,8 @@ S_tioctl_tiocucntl (io_t port,
if (!cred)
return EOPNOTSUPP;
+ mutex_lock (&global_lock);
+
if (!!mode == !!user_ioctl_mode)
err = 0;
else if (mode && packet_mode)
@@ -519,7 +531,10 @@ S_tioctl_tiocucntl (io_t port,
control_byte = 0;
err = 0;
}
+
+ mutex_unlock (&global_lock);
ports_port_deref (cred);
+
return err;
}
--
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