diff options
| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2008-10-14 05:02:09 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-10-22 11:00:25 +1100 |
| commit | febde3711992a64ea83a47a719f68a90c4b0927a (patch) | |
| tree | 27f975fe9b3bd3b99a1a7043c34cf32176b7067d /drivers/char/hvc_console.h | |
| parent | 3feebbb5492e9e463467cefb633e23a3dfcec132 (diff) | |
hvc_console: Add support for tty window resizing
The patch provides the hvc_resize() function to update the terminal
window dimensions (struct winsize) for a specified hvc console.
The function stores the new window size and schedules a function
that finally updates the tty winsize and signals the change to
user space (SIGWINCH).
Because the winsize update must acquire a mutex and might sleep,
the function is scheduled instead of being called from hvc_poll()
or khvcd.
This patch uses the tty_do_resize() routine from the tty layer.
A pending resize work is canceled in hvc_close() and hvc_hangup().
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/char/hvc_console.h')
| -rw-r--r-- | drivers/char/hvc_console.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/char/hvc_console.h b/drivers/char/hvc_console.h index ec0e9bb0e5e6..e3359f3c9b2a 100644 --- a/drivers/char/hvc_console.h +++ b/drivers/char/hvc_console.h @@ -27,6 +27,7 @@ #ifndef HVC_CONSOLE_H #define HVC_CONSOLE_H #include <linux/kref.h> +#include <linux/tty.h> /* * This is the max number of console adapters that can/will be found as @@ -56,6 +57,8 @@ struct hvc_struct { struct hv_ops *ops; int irq_requested; int data; + struct winsize ws; + struct work_struct tty_resize; struct list_head next; struct kref kref; /* ref count & hvc_struct lifetime */ }; @@ -84,6 +87,9 @@ extern int __devexit hvc_remove(struct hvc_struct *hp); int hvc_poll(struct hvc_struct *hp); void hvc_kick(void); +/* Resize hvc tty terminal window */ +extern void hvc_resize(struct hvc_struct *hp, struct winsize ws); + /* default notifier for irq based notification */ extern int notifier_add_irq(struct hvc_struct *hp, int data); extern void notifier_del_irq(struct hvc_struct *hp, int data); |