patch-2.1.2 linux/drivers/char/pty.c

• Lines: 19
• Date: Tue Oct 8 11:17:30 1996
• Orig file: v2.1.1/linux/drivers/char/pty.c
• Orig date: Sat Sep 28 22:58:22 1996

diff -u --recursive --new-file v2.1.1/linux/drivers/char/pty.c linux/drivers/char/pty.c
@@ -123,6 +123,10 @@
 		down(&tmp_buf_sem);
 		temp_buffer = tmp_buf +
 			((tty->driver.subtype-1) * PTY_BUF_SIZE);
+		if (exception()) {
+			up(&tmp_buf_sem);
+			return -EFAULT;
+		}
 		while (count > 0) {
 			n = MIN(count, PTY_BUF_SIZE);
 			memcpy_fromfs(temp_buffer, buf, n);
@@ -134,6 +138,7 @@
 			buf += n;  c+= n;
 			count -= n;
 		}
+		end_exception();
 		up(&tmp_buf_sem);
 	} else {
 		c = MIN(count, to->ldisc.receive_room(to));