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Add an instance parameter devpts interfaces

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Pass-in 'inode' or 'tty' parameter to devpts interfaces.  With multiple
devpts instances, these parameters will be used in subsequent patches
to identify the instance of devpts mounted. The parameters also help
simplify devpts implementation.

Changelog[v3]:
	- minor changes due to merge with ttydev updates
	- rename parameters to emphasize they are ptmx or pts inodes
	- pass-in tty_struct * to devpts_pty_kill() (this will help
	  cleanup the get_node() call in a subsequent patch)

Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sukadev Bhattiprolu 2008-10-13 10:42:59 +01:00 • committed by Linus Torvalds
commit 15f1a6338d
5 changed files with 47 additions and 30 deletions
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3
include/linux/tty_driver.h
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@ -225,7 +225,8 @@ struct tty_struct;
struct tty_driver;
struct tty_operations {
struct tty_struct * (*lookup)(struct tty_driver *driver, int idx);
struct tty_struct * (*lookup)(struct tty_driver *driver,
struct inode *inode, 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);