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authorAlan Cox <alan@redhat.com>2008-10-13 10:42:19 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-13 09:51:42 -0700
commit8b0a88d5912ab549d5adac2c8498ecdaae5319a5 (patch)
tree8ed71420259881fd6d1dd5f5841ffe2f3c5d1fa2 /include/linux/tty_driver.h
parent7d7b93c1452f381350dbaf276a63357fa6559e6d (diff)
tty: More driver operations
We have the lookup operation abstracted which is nice for pty cleanup but we really want to abstract the add/remove entries as well so that we can pull the pty code out of the tty core and create a clear defined interface for the tty driver table. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/tty_driver.h')
-rw-r--r--include/linux/tty_driver.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index ba891dd23550..005d06ad46a6 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -15,6 +15,20 @@
*
* Optional method. Default behaviour is to use the ttys array
*
+ * int (*install)(struct tty_driver *self, struct tty_struct *tty)
+ *
+ * Install a new tty into the tty driver internal tables. Used in
+ * conjunction with lookup and remove methods.
+ *
+ * Optional method. Default behaviour is to use the ttys array
+ *
+ * void (*remove)(struct tty_driver *self, struct tty_struct *tty)
+ *
+ * Remove a closed tty from the tty driver internal tables. Used in
+ * conjunction with lookup and remove methods.
+ *
+ * Optional method. Default behaviour is to use the ttys array
+ *
* int (*open)(struct tty_struct * tty, struct file * filp);
*
* This routine is called when a particular tty device is opened.
@@ -212,6 +226,8 @@ struct tty_driver;
struct tty_operations {
struct tty_struct * (*lookup)(struct tty_driver *driver, int idx);
+ int (*install)(struct tty_driver *driver, struct tty_struct *tty);
+ void (*remove)(struct tty_driver *driver, struct tty_struct *tty);
int (*open)(struct tty_struct * tty, struct file * filp);
void (*close)(struct tty_struct * tty, struct file * filp);
void (*shutdown)(struct tty_struct *tty);